WO2022110342A1 - 一种高温快开球面密封切断阀 - Google Patents

一种高温快开球面密封切断阀 Download PDF

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Publication number
WO2022110342A1
WO2022110342A1 PCT/CN2020/136380 CN2020136380W WO2022110342A1 WO 2022110342 A1 WO2022110342 A1 WO 2022110342A1 CN 2020136380 W CN2020136380 W CN 2020136380W WO 2022110342 A1 WO2022110342 A1 WO 2022110342A1
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WO
WIPO (PCT)
Prior art keywords
valve
hole
valve stem
inlet
stem
Prior art date
Application number
PCT/CN2020/136380
Other languages
English (en)
French (fr)
Inventor
苏荆攀
张希恒
项光武
项永安
项光洪
项炜
赵佳
张孙力
杨承帅
谷辽勇
Original Assignee
浙江石化阀门有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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 US17/599,415 priority Critical patent/US11280416B1/en
Publication of WO2022110342A1 publication Critical patent/WO2022110342A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/36—Features relating to lubrication
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical 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
    • 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
    • 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

Definitions

  • the invention relates to the field of valves, in particular to a high-temperature quick-opening spherical sealing cut-off valve.
  • the existing high-temperature shut-off valve is used in the scene where the medium is high-temperature argon, the medium temperature is 730 °C, and the medium pressure is 3MPa. According to the valve pressure-temperature level comparison, it is equivalent to DN80, Class1500.
  • Existing pneumatic, hydraulic, electromagnetic, explosive and other types of shut-off valves cannot solve the problem of high pressure generated during shut-off, so that this problem has always affected the service life.
  • the present invention provides a high-temperature quick-opening spherical sealing shut-off valve with good pressure relief and diversion effect.
  • a high-temperature quick-opening spherical sealing shut-off valve which includes a valve body, a valve seat, a valve cover, a valve disc, a valve stem and a driving device for driving the valve stem to rotate, and the valve stem is installed on the valve stem.
  • a friction adjustment mechanism for adjusting the friction between the valve disc and the valve seat;
  • valve stem and the valve disc are coaxially arranged and fixedly connected, the valve body and the valve cover are provided with an exhaust passage for gas circulation, and the valve disc and the valve seat are located on the path of the exhaust passage, so
  • the valve seat is fixedly installed in the valve body and is provided with a first through hole passing through the exhaust passage, the valve flap is provided with a second through hole corresponding to the first through hole, and the exhaust gas is provided with a second through hole corresponding to the first through hole.
  • the channel has three states of being opened when the valve flap rotates and the first through hole and the second through hole are coincident, semi-open when partially coincident, and closed when not coincident.
  • the upper surface of the valve cover is provided with a first inlet for air to enter, a second inlet that communicates with the lower part of the first inlet is provided, and the valve cover is provided with a third inlet that is circumferentially symmetrical with the first inlet, so The third inlet is not communicated with the upper surface of the valve cover, and a first annular groove connecting the two is provided between the first inlet and the third inlet;
  • the lower surface of the valve body is provided with a first outlet for supplying airflow, a second outlet that communicates with the first outlet is arranged above the first outlet, the valve body is provided with a third outlet that is circumferentially symmetrical with the first outlet, and the The third outlet is not communicated with the lower surface of the valve body, and a second annular groove is provided between the first outlet and the third outlet;
  • the second through holes and the first through holes are distributed symmetrically around the circumference, and the first inlet, the first outlet, one of the second through holes and one of the first through holes correspond to and communicate with each other to form an exhaust channel
  • the second inlet, the second outlet, the other first through hole and the other second through hole correspond to each other and communicate with the first annular groove and the second annular groove to form a shunt channel for pressure relief and shunt flow.
  • Both the first through hole and the second through hole are waist-shaped arc holes, the included angle of the first through hole is 11.1°, and the included angle of the second through hole is 66.6°.
  • the valve rod includes an upper valve rod and a lower valve rod, and the two are fixedly installed on the upper and lower sides of the center of the valve flap.
  • the upper valve rod and the valve flap are both hollow and connected, and the upper valve rod is There is a valve stem core assembly inserted into it and coaxially arranged, the upper end of the valve stem core assembly is sealed with the upper end of the upper valve stem, the upper end of the valve stem core assembly is provided with a water inlet pipe and a water outlet pipe, and its There is a pipeline inside for cooling water to flow in and out of the upper valve stem and valve disc.
  • the pipeline includes a water inlet channel and a water outlet channel.
  • the water inlet channel is located at the axial position of the valve stem core assembly and its end is provided with a transverse tube extending into the valve disc.
  • the circumferential surface of the valve stem core assembly There is a distance between the valve stem and the inner wall of the valve stem, and the circumferential surface of the valve stem core assembly is provided with a water outlet hole that communicates with the water outlet channel.
  • valve body and the valve cover are sealed and installed with steel plates, and the steel plates are respectively spaced with the valve body and the valve cover.
  • the valve flap includes a flap body and a cover plate, the upper and lower sides of the flap body are respectively provided with installation grooves for the cover plate to be installed, and the flap body is provided with a central hole for accommodating the horizontal pipe; the cover plate and the installation recess are respectively provided. Spherical sealing is adopted between the grooves, and the surface contacting the valve disc and the valve seat is sprayed with a metal film layer;
  • a sealing ring is respectively provided between the valve flap, the valve cover and the valve seat, and the sealing ring includes an inner side and an outer side of the second through hole, respectively, and the valve cover and the valve seat are provided with oil injection connected to the sealing ring. hole.
  • An upper bracket is installed on the valve cover, a lower bracket is installed on the valve body, the upper valve rod is rotatably installed on the upper bracket, and the lower valve rod is rotatably installed on the lower bracket , the friction adjustment mechanism is installed between the lower bracket and the lower valve stem, the friction adjustment mechanism includes a number of adjustment seats and a stop nut, the adjustment seat is sleeved on the outer circumference of the lower valve stem and is connected with it For rotational fit, the outer circumference of the adjustment seat is threaded with the lower bracket, and an anti-rotation block corresponding to the adjustment seat is installed on the lower bracket.
  • the upper valve stem is provided with a connecting cap, the connecting cap wraps the valve stem core assembly, and thrust ball bearings are respectively provided between the adjusting seat and the lower valve stem and between the connecting cap and the valve stem core assembly ;
  • a deep groove ball bearing is arranged between the upper valve stem and the upper bracket.
  • a rotary shaft lip seal ring is provided between the lower valve stem and the valve body, between the valve stem core assembly and the upper valve stem, and between the upper valve stem and the valve cover, and is filled with lubricating and sealing grease.
  • the technical solution drives the valve stem to rotate through the driving device, and the valve stem then drives the valve disc to rotate in the cavity formed by the valve cover and the valve seat.
  • FIG. 1 is a schematic structural diagram of a high-temperature quick-opening spherical sealing shut-off valve according to an embodiment of the present invention.
  • Figure 2 is a top view of the valve cover.
  • FIG. 3 is a cross-sectional view at A-A in FIG. 2 .
  • FIG. 4 is a cross-sectional view at B-B in FIG. 3 .
  • Figure 5 is a top view of the valve seat.
  • FIG. 6 is a cross-sectional view at C-C in FIG. 5 .
  • Figure 7 is a top view of the valve flap.
  • FIG. 8 is a cross-sectional view at D-D in FIG. 7 .
  • valve body 9 is a cross-sectional view of the valve body.
  • FIG. 10 is a cross-sectional view at E-E in FIG. 9 .
  • Figure 11 is a schematic structural diagram of a valve stem, a valve disc and a valve stem core assembly.
  • Figure 12 is a square wave diagram of the switching time of the high temperature quick opening spherical seal shut-off valve.
  • FIG. 13 is a partial enlarged view of A in FIG. 1 .
  • a high-temperature quick-opening spherical seal shut-off valve includes a valve body 1, a valve seat 2, a valve cover 3, a valve disc 4, a valve stem 5 and a driving device 6 for driving the valve stem 5 to rotate.
  • a friction adjusting mechanism for adjusting the friction force between the valve disc 4 and the valve seat 2 is installed on the rod 5;
  • valve stem 5 and the valve flap 4 are coaxially arranged and fixedly connected, the valve body 1 and the valve cover 3 are provided with an exhaust passage for gas circulation, and the valve flap 4 and the valve seat 2 are located in the exhaust gas.
  • the valve seat 2 is fixedly installed in the valve body 1 and is provided with a first through hole 21 that communicates with the exhaust passage, and the valve flap 4 is provided with the first through hole. 21 corresponds to the second through hole 41, the exhaust passage has three states of opening when the valve flap 4 rotates and the first through hole 21 and the second through hole 41 are overlapped, half-open when partially overlapped, and closed when they are not overlapped.
  • this technical solution drives the valve stem to rotate through the driving device, and the valve stem drives the valve disc to rotate in the cavity formed by the valve cover and the valve seat.
  • the valve disc rotates, the second through hole will overlap with the exhaust passage, and some There are three states of coincidence and non-coincidence. These three states correspond to the opening, partial opening and closing of the shut-off valve of the present application, providing continuous interval injection for high-temperature argon passing through the exhaust channel, with good working stability and pressure relief. The advantage of good diversion effect.
  • the driving device adopts a motor and drives the valve stem and the valve disc to rotate.
  • the valve disc has two waist-shaped arc-shaped second through holes, and the valve seat has two first through holes and its outer arc and inner circle are The radius of the arc is the same as the radius of the second through hole of the valve disc.
  • the upper surface of the valve cover 3 is provided with a first inlet 31 for air to enter, a second inlet 32 communicated below the first inlet 31 is provided, and the valve cover 3 is provided with a circumferential symmetry with the first inlet 31
  • the third inlet 33, the third inlet 33 is not communicated with the upper surface of the valve cover 3, and the first annular groove 34 connecting the two is provided between the first inlet 31 and the third inlet 33;
  • the lower surface of the valve body 1 is provided with a first outlet 11 for supplying air to discharge, a second outlet 12 connected to the upper part of the first outlet 11 is provided, and the valve body 1 is provided with a circumferential symmetry with the first outlet 11
  • the third outlet 13, the third outlet 13 is not communicated with the lower surface of the valve body 1, the first outlet 11 and the third outlet 13 are provided with a second annular groove 14 connecting the two;
  • the second through holes 41 and the first through holes 21 are distributed symmetrically around the circumference, and the first inlet 31 , the first outlet 11 , one of the second through holes 41 and one of the first through holes 21 correspond to each other. and communicate with each other to form an exhaust channel, the second inlet 32 , the second outlet 12 , the other first through hole 21 and the other second through hole 41 correspond to the first annular groove 34 and the second annular groove 14 is connected to form a shunt channel for pressure relief and shunt; the shunt channels of the valve cover and the valve body are auxiliary channels.
  • the high-temperature airflow enters the first inlet of the valve cover from the upper pipe, and after the first inlet
  • There are two flow directions one flow direction is from the second inlet 32 directly downward into the upper plane of the valve disc, and the second flow direction is through the first annular groove into the third inlet, and then into the valve disc, wherein the first annular groove has two.
  • the airflow from the first inlet and the third inlet is communicated with the second through hole of the valve disc, the airflow can flow into the first through hole of the valve seat through the valve disc, and then flow into the first through hole of the valve body through the second annular groove of the valve body.
  • the outlet, and finally the discharge plays the role of pressure relief and diversion.
  • Both the first through hole 21 and the second through hole 41 are waist-shaped arc holes, the included angle of the first through hole 21 is 11.1°, and the included angle of the second through hole 41 is 66.6°;
  • the valve drive device selects three-phase asynchronous motor with electromagnetic speed regulation, and the speed regulation range is 125 rpm-1250 rpm; when the second through hole on the valve disc and the first through hole on the valve seat are completely coincident, the valve is fully opened , if it is partially overlapped, the valve is half-open or half-closed, and if it is not coincident at all, the valve is closed, and the two second through holes on the valve disc and the two first through holes on the valve seat are distributed symmetrically around the circumference, so as long as It is enough to calculate the coincidence of an approximate square hole.
  • the angle of the second through hole of the valve disc is 66.6°
  • the angle of the first through hole of the valve seat is 11.1°
  • the valve function in this embodiment The full opening time is required to be 20ms
  • the calculation of the motor speed is as follows: the diameter of the motor pulley and the valve stem pulley are the same, so the two are at the same speed.
  • the valve stem and valve disc are integrated and rotate synchronously.
  • the valve rod 5 includes an upper valve rod 52 and a lower valve rod 53, and the two are fixedly installed on the upper and lower sides of the center of the valve flap 4, and the upper valve rod 52 and the valve flap 4 are both
  • the upper valve stem 52 is provided with a valve stem core assembly 7 inserted into it and arranged coaxially, and the upper end of the valve stem core assembly 7 is sealed with the upper end of the upper valve stem 52, so
  • the upper end of the valve stem core assembly 7 is provided with a water inlet pipe 71 and a water outlet pipe 72, and a pipeline for cooling water to flow in and out of the upper valve stem and the valve flap is arranged inside, so as to cool the upper valve stem and the valve flap.
  • the pipeline includes a water inlet channel 73 and a water outlet channel 74.
  • the water inlet channel 73 is located at the axial position of the valve stem core assembly 7 and its end is provided with a transverse tube 75 extending into the valve flap 4.
  • the valve stem There is a space between the circumferential surface of the core assembly 7 and the inner wall of the valve stem 5.
  • the circumferential surface of the valve stem core assembly 7 is provided with a water outlet hole 76 that communicates with the water outlet channel 74, and the cooling water enters the water inlet from the water inlet pipe.
  • the outer circumferential positions of the valve body 1 and the valve cover 3 are sealed and installed with a steel plate 8, and the steel plate 8 is separated from the valve body 1 and the valve cover 3 respectively.
  • the pipe interface 81 the cooling water enters from one side and flows out from the other side, absorbs heat and cools down along the way, and has the effect of cooling the valve body and the valve cover.
  • a sealing ring 9 is respectively provided between the valve flap 4, the valve cover 3 and the valve seat 2, a sealing ring 9 is respectively provided.
  • the sealing surfaces of the valve seat and the valve cover are processed with an R-shaped oil storage tank on the sealing surface, which is not shown in the figure; glass oil cups should be placed outside the valve cover and valve seat. It should be placed at a level higher than the sealing surface, so that the lubricating oil enters the sealing surface by gravity.
  • the valve flap 4 includes a flap body 42 and a cover plate 43.
  • the upper and lower sides of the flap body 42 are respectively provided with mounting grooves 44 for the cover plate 43 to be mounted on.
  • a spherical surface is used between the cover plate 43 and the mounting groove 44.
  • Sealing, as shown in FIG. 13, the flap body 41 is provided with a central hole 45 for accommodating the transverse tube; the surfaces of the valve flap 4 in contact with the valve seat 2 and the valve cover 3 are sprayed with a metal film layer 46;
  • the film layer 46 is made of tungsten carbide.
  • An upper bracket 35 is installed on the valve cover 3
  • a lower bracket 15 is installed on the valve body 1
  • the upper valve rod 52 is rotatably installed on the upper bracket 35
  • the lower valve rod 53 is rotatable
  • Installed on the lower bracket 15 the friction adjustment mechanism is installed between the lower bracket 15 and the lower valve stem 53, the friction adjustment mechanism includes a plurality of adjustment seats 10 and a backstop nut 101, the adjustment seat 10 It is sleeved on the outer circumference of the lower valve rod 53 and rotates with it.
  • the outer circumference of the adjustment seat 10 is threaded with the lower bracket 15.
  • Rotary block 102 the rotation speed of the valve disc is very fast, about 370 rpm, the valve disc and the sealing surface of the valve seat will rub against each other during the valve opening and closing process, and the magnitude of the friction force is proportional to the positive pressure and the friction coefficient; In order to reduce the positive pressure, it is necessary to adjust the gap between the two sealing pairs. If the gap is large, the friction force will be small, and it is easy to leak, and the valve will not be able to seal; if the gap is small, or there is no gap, the friction force will increase.
  • the ideal state is that the gap is adjusted to be able to be sealed and the friction force is small; in this embodiment, the lower valve stem can be pulled up and down respectively through the adjustment seat; the sealing pair gap between the valve disc and the valve seat can be adjusted, To achieve the effect of adjusting the sealing friction of the valve disc.
  • the upper valve stem 52 is provided with a connecting cap 51, and the connecting cap 51 wraps the valve stem core assembly 7;
  • Thrust ball bearings 103 are respectively provided between the adjusting seat 10 and the lower valve stem 53 and between the connecting cap 51 and the valve stem core assembly 7;
  • a deep groove ball bearing 104 is provided between the upper valve stem 52 and the upper bracket 35 ; these ball bearings must be filled with grease during installation to provide lubrication.
  • the horizontal tube 75 adopts a hollow shaft, and the water inlet channel 73 communicates with the circumferential surface of the horizontal tube 75 .
  • the valve stem core assembly includes a hollow main pipe 78 and a hollow branch pipe 77.
  • the hollow branch pipe is inserted into the hollow main pipe 78 with a space therebetween.
  • the hollow branch pipe is used as a water inlet channel.
  • the spacing serves as the outlet channel.
  • An upper bracket 35 is installed on the valve cover 3, the upper valve stem 52 is rotatably installed on the upper bracket 35, and the valve stem core assembly 7 and the upper bracket 35 are provided with a connection between the two and a bend.
  • the anti-rotation plate 351 is folded; because the lip ring and the upper valve stem are rotated, friction is generated to form torque, and the upper end of the valve stem core assembly has a cooling water pipe joint and a connecting pipe, so the valve stem core assembly is not allowed to rotate, so An anti-rotation plate is arranged on the top of the upper bracket and the valve stem core.
  • the upper valve stem 52 is provided with a connecting cap 51, the connecting cap 51 wraps the valve stem core assembly 7, and a rotational fit is adopted between the two, the valve stem core assembly 7 is provided with a pointer 79, the The outer surface of the connecting cap 7 is provided with a color code for identification and corresponding to the pointer 79.
  • a pointer is installed on the upper part of the valve stem assembly, and red and blue are painted on the corresponding part of the outer circle of the connecting cap. mark.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • the specific meanings of the above terms in the present invention can be understood in specific situations.
  • “plurality” means two or more.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Lift Valve (AREA)

Abstract

一种高温快开球面密封切断阀，涉及阀门领域，其包括阀体（1）、阀座（2）、阀盖（3）、阀瓣（4）、阀杆（5）以及驱动阀杆（5）转动的驱动装置（6），阀杆（5）上安装有用于调节阀瓣（4）与阀座（2）之间摩擦力的摩擦调节机构；阀杆（5）与阀瓣（4）同轴设置且固定连接，阀体（1）和阀盖（3）上设有供气体流通的排气通道，阀瓣（4）和阀座（2）位于排气通道的路径上，阀座（2）固定安装在阀体（1）内且其设有与排气通道贯通的第一通孔（21），阀瓣（4）上设有与第一通孔（21）对应的第二通孔（41），排气通道具有在阀瓣（4）转动时第一通孔（21）与第二通孔（41）重合时开启，部分重合时半开启以及不重合时关闭的三种状态。该切断阀具有泄压分流效果好的优点。

Description

一种高温快开球面密封切断阀 技术领域
本发明涉及阀门领域，具体涉及一种高温快开球面密封切断阀。
 背景技术
现有的高温切断阀在用于介质为高温氩气的场景中，介质温度730℃，介质压力3MPa，按照阀门压力—温度等级对比，相当于DN80，Class1500。现有的气动、液动、电磁动、爆炸动等类型的切断阀都无法解决切断时产生的高压问题，使这个问题一直影响使用寿命。
 技术问题
为了克服背景技术的不足，本发明提供一种泄压分流效果好的高温快开球面密封切断阀。
 技术解决方案
本发明所采用的技术方案：一种高温快开球面密封切断阀，其包括阀体、阀座、阀盖、阀瓣、阀杆以及驱动阀杆转动的驱动装置，所述阀杆上安装有用于调节阀瓣与阀座之间摩擦力的摩擦调节机构；
所述阀杆与阀瓣同轴设置且固定连接，所述阀体和阀盖上设有供气体流通的排气通道，所述阀瓣和阀座位于所述排气通道的路径上，所述阀座固定安装在所述阀体内且其设有与排气通道贯通的第一通孔，所述阀瓣上设有与所述第一通孔对应的第二通孔，所述排气通道具有在阀瓣转动且第一通孔与第二通孔重合时开启，部分重合时半开启以及不重合时关闭的三种状态。
所述阀盖上表面设有供气流进入的第一进口，所述第一进口的下方设有连通的第二进口，所述阀盖内设有与第一进口圆周对称的第三进口，所述第三进口未与阀盖上表面连通，所述第一进口与第三进口之间设有连通二者的第一环形槽；
所述阀体下表面设有供气流排出的第一出口，所述第一出口的上方设有连通的第二出口，所述阀体内设有与第一出口圆周对称的第三出口，所述第三出口未与阀体下表面连通，所述第一出口与第三出口之间设有连通二者的第二环形槽；
所述第二通孔和第一通孔均为圆周对称分布，所述第一进口、第一出口、其中一个第二通孔以及其中一个第一通孔四者相对应且连通形成排气通道，所述第二进口、第二出口、另一个第一通孔以及另一个第二通孔四者相对应且与第一环形槽和第二环形槽连通形成用于泄压分流的分流通道。
所述第一通孔和第二通孔都采用腰型圆弧孔，所述第一通孔的夹角为11.1°，第二通孔的夹角为66.6°。
所述阀杆包括上阀杆和下阀杆且二者固定安装在所述阀瓣中心处的上下两侧，所述上阀杆和阀瓣都中空设置且二者连通，所述上阀杆内设有插入其中且同轴设置的阀杆芯组件，所述阀杆芯组件的上端与上阀杆上端之间密封配合，所述阀杆芯组件上端设有进水管和出水管，且其内部设有供冷却水流通进出上阀杆和阀瓣的管路。
所述管路包括进水通道和出水通道，所述进水通道位于阀杆芯组件的轴心位置且其末端设有伸入阀瓣内的横管，所述阀杆芯组件的周向面与阀杆内壁之间设有间距，所述阀杆芯组件的周向面设有连通所述出水通道的出水孔。
所述阀体和阀盖的外圆周位置都密封安装有钢板，钢板分别与阀体和阀盖之间设有间距，所述钢板上设有若干供冷却水进出的管接口。
所述阀瓣包括瓣体以及盖板，所述瓣体上下两侧面分别设有供盖板安装的安装凹槽，所述瓣体设有容纳横管的中心孔；所述盖板与安装凹槽之间采用球面密封，所述阀瓣与阀座接触的表面喷涂有金属膜层；
所述阀瓣与阀盖和阀座之间都分别设有密封圈，所述密封圈包括分别位于第二通孔的内侧与外侧，所述阀盖和阀座上设有连通密封圈的注油孔。
所述阀盖上安装有上支架，所述阀体上安装有下支架，所述上阀杆可转动的安装在所述上支架上，所述下阀杆可转动安装在所述下支架上，所述摩擦调节机构安装在所述下支架与下阀杆之间，所述摩擦调节机构包括若干调节座和止退螺母，所述调节座套装在所述下阀杆的外圆周上且与其转动配合，所述调节座的外圆周与所述下支架采用螺纹配合，所述下支架上安装有与调节座对应的防转块。
所述上阀杆上设有连接帽，所述连接帽包裹住所述阀杆芯组件，所述调节座与下阀杆之间以及连接帽与阀杆芯组件之间都分别设有推力球轴承；
所述上阀杆与上支架之间设有深沟球轴承。
所述下阀杆与阀体之间、阀杆芯组件与上阀杆之间以及上阀杆与阀盖之间设有旋转轴唇形密封圈，且其填满润滑密封脂。
 有益效果
本发明的有益效果是：本技术方案通过驱动装置带动阀杆转动，阀杆再带动阀瓣在阀盖和阀座形成的腔室中转动，当阀瓣转动时，第二通孔会与排气通道产生重合，部分重合以及不重合三种状态，这三种状态分别对应了本申请的切断阀开启，部分开启以及关闭，为经过排气通道的高温氩气提供连续的间隔喷射，具有工作稳定性好，泄压分流效果好的优点。
 附图说明
图1为本发明实施例高温快开球面密封切断阀的结构示意图。
图2为阀盖的俯视图。
图3为图2中A-A处的剖视图。
图4为图3中B-B处的剖视图。
图5为阀座的俯视图。
图6为图5中C-C处的剖视图。
图7为阀瓣的俯视图。
图8为图7中D-D处的剖视图。
图9为阀体的剖视图。
图10为图9中E-E处的剖视图。
图11为阀杆，阀瓣以及阀杆芯组件的结构示意图。
图12为高温快开球面密封切断阀开关时间的方波图。
图13为图1中A处的局部放大图。
 本发明的实施方式
下面结合附图对本发明实施例作进一步说明：
如图所示，一种高温快开球面密封切断阀，其包括阀体1、阀座2、阀盖3、阀瓣4、阀杆5以及驱动阀杆5转动的驱动装置6，所述阀杆5上安装有用于调节阀瓣4与阀座2之间摩擦力的摩擦调节机构；
所述阀杆5与阀瓣4同轴设置且固定连接，所述阀体1和阀盖3上设有供气体流通的排气通道，所述阀瓣4和阀座2位于所述排气通道的路径上，所述阀座2固定安装在所述阀体1内且其设有与排气通道贯通的第一通孔21，所述阀瓣4上设有与所述第一通孔21对应的第二通孔41，所述排气通道具有在阀瓣4转动且第一通孔21与第二通孔41重合时开启，部分重合时半开启以及不重合时关闭的三种状态，本技术方案通过驱动装置带动阀杆转动，阀杆再带动阀瓣在阀盖和阀座形成的腔室中转动，当阀瓣转动时，第二通孔会与排气通道产生重合，部分重合以及不重合三种状态，这三种状态分别对应了本申请的切断阀开启，部分开启以及关闭，为经过排气通道的高温氩气提供连续的间隔喷射，具有工作稳定性好，泄压分流效果好的优点。
驱动装置采用电机且带动阀杆、阀瓣作旋转运动，阀瓣上有两条腰形圆弧状的第二通孔，阀座上有两个第一通孔且其外圆弧和内圆弧的半径均分别与阀瓣第二通孔的半径相同，当阀瓣旋转时，阀座的第一通孔与阀瓣的第二通孔重合，则气流可通过，阀门则开启；部分重合，则称为半开或半关；完全不重合，则称为关闭；阀门的开启和关闭就是由阀座的第一通孔与阀瓣的第二通孔的重合与否来决定。
所述阀盖3上表面设有供气流进入的第一进口31，所述第一进口31的下方设有连通的第二进口32，所述阀盖3内设有与第一进口31圆周对称的第三进口33，所述第三进口33未与阀盖3上表面连通，所述第一进口31与第三进口33之间设有连通二者的第一环形槽34；
所述阀体1下表面设有供气流排出的第一出口11，所述第一出口11的上方设有连通的第二出口12，所述阀体1内设有与第一出口11圆周对称的第三出口13，所述第三出口13未与阀体1下表面连通，所述第一出口11与第三出口13之间设有连通二者的第二环形槽14；
所述第二通孔41和第一通孔21均为圆周对称分布，所述第一进口31、第一出口11、其中一个第二通孔41以及其中一个第一通孔21四者相对应且连通形成排气通道，所述第二进口32、第二出口12、另一个第一通孔21以及另一个第二通孔41四者相对应且与第一环形槽34和第二环形槽14连通形成用于泄压分流的分流通道；阀盖和阀体的分流通道都是辅助通道，作为分流和压力平衡的功能，高温气流从上管进入阀盖的第一进口，第一进口之后有两个流向，一条流向是从第二进口32是直接向下流入阀瓣上平面，第二条流向是经第一环形槽流入第三进口，然后流入阀瓣上，其中第一环形槽有两条。当第一进口和第三进口的气流和阀瓣的第二通孔相通时，气流可经阀瓣流入阀座的第一通孔，再经阀体的第二环形槽流入阀体的第一出口，最后排出，起到了泄压分流的作用。
所述第一通孔21和第二通孔41都采用腰型圆弧孔，所述第一通孔21的夹角为11.1°，第二通孔41的夹角为66.6°；
阀门驱动装置选择电磁调速三相异步电动机，调速范围125转/分-1250转/分；阀瓣上的第二通孔和阀座上的第一通孔完全重合时，则阀门全开，如部分重合，则阀门半开或半关，完全不重合，则阀门关闭，阀瓣上的两个第二通孔和阀座上的两个第一通孔均为圆周对称分布，所以只要计算一个近似方孔的重合度就可以了。阀瓣第二通孔的夹角为66.6°，阀座第一通孔的夹角为11.1°，全开的夹角应为66.6°-11.1°×2=44.4°；本实施例中阀门功能要求全开时间为20ms，每度旋转时间为20ms÷44.4°=0.45 ms/度，半开时间为0.45×11.1=4.995≈5ms,关闭时间为180°-66.6°×0.45=51.03≈51ms。
电机转速的计算如下：电机皮带轮和阀杆皮带轮直径相同，所以二者同速。阀杆和阀瓣为一整体，同步旋转。阀瓣旋转1圈的时间是：360÷44.4×0.02=0.162秒，每分钟的转数为：60÷0.162=370转/分，满足了客户要求阀门开启时间0.02秒，关闭时间小于0.05秒的高要求。如图12所示，所述阀杆5包括上阀杆52和下阀杆53且二者固定安装在所述阀瓣4中心处的上下两侧，所述上阀杆52和阀瓣4都中空设置且二者连通，所述上阀杆52内设有插入其中且同轴设置的阀杆芯组件7，所述阀杆芯组件7的上端与上阀杆52上端之间密封配合，所述阀杆芯组件7上端设有进水管71和出水管72，且其内部设有供冷却水流通进出上阀杆和阀瓣的管路，为上阀杆和阀瓣进行冷却。
所述管路包括进水通道73和出水通道74，所述进水通道73位于阀杆芯组件7的轴心位置且其末端设有伸入阀瓣4内的横管75，所述阀杆芯组件7的周向面与阀杆5内壁之间设有间距，所述阀杆芯组件7的周向面设有连通所述出水通道74的出水孔76，冷却水从进水管进入进水通道中，一直向下通过横管进入阀瓣内部，为阀瓣降温冷却，然后冷却水逐渐灌满阀瓣，进入上阀杆内壁与阀杆芯组件的间距中，然后从出水孔中进入出水通道，最后从出水管中排出。
所述阀体1和阀盖3的外圆周位置都密封安装有钢板8，钢板8分别与阀体1和阀盖3之间设有间距，所述钢板8上设有若干供冷却水进出的管接口81，冷却水从一侧进入，另一侧流出，沿途吸热降温，起到为阀体、阀盖冷却的效果。
所述阀瓣4与阀盖3和阀座2之间都分别设有密封圈9，所述密封圈9包括分别位于第二通孔41的内侧与外侧，所述阀盖3和阀座2上设有连通密封圈9的注油孔91；阀瓣在高速旋转时，其与阀盖和阀座的密封圈发生平面磨擦，为了减少磨擦系数，由干磨擦变为润滑磨擦，让润滑油流入阀座和阀盖的密封面，在密封面上加工有R形储油槽未图示；在阀盖和阀座的外面，均要放置玻璃油杯，无油了要即时补上；油杯一定要放置在高于密封面的水平位置，以便润滑油依靠重力进入密封面。
所述阀瓣4包括瓣体42以及盖板43，所述瓣体42上下两侧面分别设有供盖板43安装的安装凹槽44，所述盖板43与安装凹槽44之间采用球面密封，如图13所示，所述瓣体41设有容纳横管的中心孔45；所述阀瓣4分别与阀座2和阀盖3接触的表面喷涂有金属膜层46；所述金属膜层46采用碳化钨，由于阀瓣和阀座、阀盖密封副高速旋转，在密封面用超音速喷焊WC硬质材料，硬度达HRC60以上，具有硬度高耐磨的作用，本实施例中阀杆芯组件的横管放入中心孔中后，将盖板通过螺栓固定安装在安装凹槽上，然后阀杆与位于瓣体上表面的盖板通过焊接固定，使阀瓣和阀杆成为一体。
所述阀盖3上安装有上支架35，所述阀体1上安装有下支架15，所述上阀杆52可转动的安装在所述上支架35上，所述下阀杆53可转动安装在所述下支架15上，所述摩擦调节机构安装在所述下支架15与下阀杆53之间，所述摩擦调节机构包括若干调节座10和止退螺母101，所述调节座10套装在所述下阀杆53的外圆周上且与其转动配合，所述调节座10的外圆周与所述下支架15采用螺纹配合，所述下支架15上安装有与调节座10对应的防转块102；阀瓣的旋转速度很快，约为370转/分钟，阀瓣和阀座密封面在阀门启闭过程中会产生相互摩擦，摩擦力的大小与正压力和摩擦系数成正比；为了减少正压力，就要调整两个密封副之间的间隙，间隙大了，摩擦力会小，就容易泄漏，阀门就不能密封；间隙小了，或者没有间隙，摩擦力就会增大，理想的状态就是间隙调整到既能密封，摩擦力又很小；本实施例可以通过调节座分别将下阀杆向上、向下拉动；即可调节阀瓣和阀座之间的密封副间隙，达到调节阀瓣密封摩擦力的效果。
所述上阀杆52上设有连接帽51，所述连接帽51包裹住所述阀杆芯组件7；
所述调节座10与下阀杆53之间以及连接帽51与阀杆芯组件7之间都分别设有推力球轴承103；
所述上阀杆52与上支架35之间设有深沟球轴承104；这些球轴承在安装时都要填装润滑脂，起到润滑的作用。
所述下阀杆53与阀体1之间、阀杆芯组件7与上阀杆52之间以及上阀杆52与阀盖3之间设有唇形密封圈105，且其填满润滑密封脂，为了减少高速旋转密封副的摩擦力，对密封面增加机油润滑剂，减小摩擦系数，使转动轻松，延长使用寿命；快开阀由于上阀杆在阀盖内高速旋转，下阀杆在阀体内高速旋转，为防止高温高压气体的外漏，需安装一套机械密封圈，每套包括3件增强高温RPTFE带骨架的唇形密封圈，每个唇形密封圈的外面加一只氟橡胶材质的O形密封圈。并在唇形密封圈内填充二硫化钼高温润滑剂。
所述横管75采用空心轴，且所述进水通道73与所述横管75的周向面连通。
所述阀杆芯组件包括空心主管78以及空心支管77，所述空心支管插入空心主管78且二者之间留有间距，所述空心支管作为进水通道，所述空心支管与空心主管78的间距作为出水通道。
所述阀盖3上安装有上支架35，所述上阀杆52可转动的安装在所述上支架35上，所述阀杆芯组件7与上支架35之间设有连接二者且弯折设置的防转板351；由于唇形圈和上阀杆在转动时，产生摩擦，形成转矩，而阀杆芯组合件上端有冷却水管接头和接管，不允许阀杆芯组件转动，所以在上支架和阀杆芯顶端设置防转板。
所述上阀杆52上设有连接帽51，所述连接帽51包裹住所述阀杆芯组件7且二者之间采用转动配合，所述阀杆芯组件7上安装有指针79，所述连接帽7的外表面设有用于识别且对应指针79的色标，为了让阀门停在关闭位置，在阀杆芯组件上部安装指针，在连接帽的外圆对应部位涂上红、蓝不同色标。
在本发明的描述中，需要说明的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。此外，在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
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发明，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. 一种高温快开球面密封切断阀，其包括阀体（1）、阀座（2）、阀盖（3）、阀瓣（4）、阀杆（5）以及驱动阀杆（5）转动的驱动装置（6），其特征在于：所述阀杆（5）上安装有用于调节阀瓣（4）与阀座（2）之间摩擦力的摩擦调节机构；
    所述阀杆（5）与阀瓣（4）同轴设置且固定连接，所述阀体（1）和阀盖（3）上设有供气体流通的排气通道，所述阀瓣（4）和阀座（2）位于所述排气通道的路径上，所述阀座（2）固定安装在所述阀体（1）内且其设有与排气通道贯通的第一通孔（21），所述阀瓣（4）上设有与所述第一通孔（21）对应的第二通孔（41），所述排气通道具有在阀瓣（4）转动且第一通孔（21）与第二通孔（41）重合时开启，部分重合时半开启以及不重合时关闭的三种状态。
  2. 根据权利要求1所述的高温快开球面密封切断阀，其特征在于：所述阀盖（3）上表面设有供气流进入的第一进口（31），所述第一进口（31）的下方设有连通的第二进口（32），所述阀盖（3）内设有与第一进口（31）圆周对称的第三进口（33），所述第三进口（33）未与阀盖（3）上表面连通，所述第一进口（31）与第三进口（33）之间设有连通二者的第一环形槽（34）；
    所述阀体（1）下表面设有供气流排出的第一出口（11），所述第一出口（11）的上方设有连通的第二出口（12），所述阀体（1）内设有与第一出口（11）圆周对称的第三出口（13），所述第三出口（13）未与阀体（1）下表面连通，所述第一出口（11）与第三出口（13）之间设有连通二者的第二环形槽（14）；
    所述第二通孔（41）和第一通孔（21）均为圆周对称分布，所述第一进口（31）、第一出口（11）、其中一个第二通孔（41）以及其中一个第一通孔（21）四者相对应且连通形成排气通道，所述第二进口（32）、第二出口（12）、另一个第一通孔（21）以及另一个第二通孔（41）四者相对应且与第一环形槽（34）和第二环形槽（14）连通形成用于泄压分流的分流通道。
  3. 根据权利要求2所述的高温快开球面密封切断阀，其特征在于： 所述第一通孔（21）和第二通孔（41）都采用腰型圆弧孔，所述第一通孔（21）的夹角为11.1°，第二通孔（41）的夹角为66.6°。
  4. 根据权利要求1所述的高温快开球面密封切断阀，其特征在于：所述阀杆（5）包括上阀杆（52）和下阀杆（53）且二者固定安装在所述阀瓣（4）中心处的上下两侧，所述上阀杆（52）和阀瓣（4）都中空设置且二者连通，所述上阀杆（52）内设有插入其中且同轴设置的阀杆芯组件（7），所述阀杆芯组件（7）的上端与上阀杆（52）上端之间密封配合，所述阀杆芯组件（7）上端设有进水管（71）和出水管（72），且其内部设有供冷却水流通进出上阀杆和阀瓣的管路。
  5. 根据权利要求4所述的高温快开球面密封切断阀，其特征在于：所述管路包括进水通道（73）和出水通道（74），所述进水通道（73）位于阀杆芯组件（7）的轴心位置且其末端设有伸入阀瓣（4）内的横管（75），所述阀杆芯组件（7）的周向面与阀杆（5）内壁之间设有间距，所述阀杆芯组件（7）的周向面设有连通所述出水通道（74）的出水孔（76）。
  6. 根据权利要求4所述的高温快开球面密封切断阀，其特征在于：所述阀体（1）和阀盖（3）的外圆周位置都密封安装有钢板（8），钢板（8）分别与阀体（1）和阀盖（3）之间设有间距，所述钢板（8）上设有若干供冷却水进出的管接口（81）。
  7. 根据权利要求5所述的高温快开球面密封切断阀，其特征在于：所述阀瓣（4）包括瓣体（42）以及盖板（43），所述瓣体（42）上下两侧面分别设有供盖板（43）安装的安装凹槽（44），所述瓣体（41）设有容纳横管的中心孔（45）；所述盖板（43）与安装凹槽（44）之间采用球面密封，所述阀瓣（4）与阀座（2）接触的表面喷涂有金属膜层（46）；
    所述阀瓣（4）与阀盖（3）和阀座（2）之间都分别设有密封圈（9），所述密封圈（9）包括分别位于第二通孔（41）的内侧与外侧，所述阀盖（3）和阀座（2）上设有连通密封圈（9）的注油孔（91）。
  8. 根据权利要求7所述的高温快开球面密封切断阀，其特征在于：所述阀盖（3）上安装有上支架（35），所述阀体（1）上安装有下支架（15），所述上阀杆（52）可转动的安装在所述上支架（35）上，所述下阀杆（53）可转动安装在所述下支架（15）上，所述摩擦调节机构安装在所述下支架（15）与下阀杆（53）之间，所述摩擦调节机构包括若干调节座（10）和止退螺母（101），所述调节座（10）套装在所述下阀杆（53）的外圆周上且与其转动配合，所述调节座（10）的外圆周与所述下支架（15）采用螺纹配合，所述下支架（15）上安装有与调节座（10）对应的防转块（102）。
  9. 根据权利要求1所述的高温快开球面密封切断阀，其特征在于：所述上阀杆（52）上设有连接帽（51），所述连接帽（51）包裹住所述阀杆芯组件（7），
    所述调节座（10）与下阀杆（53）之间以及连接帽（51）与阀杆芯组件（7）之间都分别设有推力球轴承（103）；
    所述上阀杆（52）与上支架（35）之间设有深沟球轴承（104）。
  10. 根据权利要求1所述的高温快开球面密封切断阀，其特征在于：所述下阀杆（53）与阀体（1）之间、阀杆芯组件（7）与上阀杆（52）之间以及上阀杆（52）与阀盖（3）之间设有旋转轴唇形密封圈（105），且其填满润滑密封脂。
PCT/CN2020/136380 2020-11-25 2020-12-15 一种高温快开球面密封切断阀 WO2022110342A1 (zh)

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