CN112361025A - Quick opening mechanism of quick opening high-temperature spherical sealing cut-off valve - Google Patents

Quick opening mechanism of quick opening high-temperature spherical sealing cut-off valve Download PDF

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Publication number
CN112361025A
CN112361025A CN202011336531.XA CN202011336531A CN112361025A CN 112361025 A CN112361025 A CN 112361025A CN 202011336531 A CN202011336531 A CN 202011336531A CN 112361025 A CN112361025 A CN 112361025A
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CN
China
Prior art keywords
valve
valve rod
quick opening
hole
outlet
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Granted
Application number
CN202011336531.XA
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Chinese (zh)
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CN112361025B (en
Inventor
金虎
王忠渊
项光洪
罗建康
王忠淼
刘贤德
黄家巧
章苗苗
储嵩
李华贵
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Zhejiang Petrochemical Valve Co ltd
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Zhejiang Petrochemical Valve Co ltd
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Application filed by Zhejiang Petrochemical Valve Co ltd filed Critical Zhejiang Petrochemical Valve Co ltd
Priority to CN202011336531.XA priority Critical patent/CN112361025B/en
Priority to PCT/CN2020/136379 priority patent/WO2022110341A1/en
Priority to KR1020217038477A priority patent/KR102422682B1/en
Publication of CN112361025A publication Critical patent/CN112361025A/en
Application granted granted Critical
Publication of CN112361025B publication Critical patent/CN112361025B/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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention discloses a quick opening mechanism of a quick opening high-temperature spherical sealing cut-off valve, which relates to the field of valves and comprises a valve body, a valve seat, a valve cover, a valve clack, a valve rod and a driving device for driving the valve rod to rotate, wherein the valve rod and the valve clack are coaxially arranged and fixedly connected, an exhaust passage for gas to flow is arranged on the valve body and the valve cover, the valve clack and the valve seat are positioned on the path of the exhaust passage, the valve seat is fixedly arranged in the valve body and is provided with a first through hole communicated with the exhaust passage, the valve clack is provided with a second through hole corresponding to the first through hole, and the exhaust passage has three states of opening when the first through hole and the second through hole are overlapped when the valve clack rotates, half opening when the valve clack. The invention has the advantage of good pressure relief and flow distribution effects.

Description

Quick opening mechanism of quick opening high-temperature spherical sealing cut-off valve
Technical Field
The invention relates to the field of valves, in particular to a quick opening mechanism of a quick opening high-temperature spherical sealing cut-off valve.
Background
The existing high-temperature cut-off valve is used in a scene that a medium is high-temperature argon, the medium temperature is 730 ℃, the medium pressure is 3MPa, and the comparison between the valve pressure and the temperature grade is equivalent to DN80 and Class 1500. The existing pneumatic, hydraulic, electromagnetic and explosive cut-off valves can not solve the problem of high pressure generated during cut-off, so that the service life of the existing cut-off valves is always influenced.
Disclosure of Invention
In order to overcome the defects of the background art, the invention provides the quick-opening mechanism of the quick-opening high-temperature spherical sealing cut-off valve with good pressure relief and flow distribution effects.
The technical scheme adopted by the invention is as follows: the utility model provides an open fast quick-witted of sealed trip valve of high temperature sphere, its includes valve body, disk seat, valve gap, valve clack, valve rod and drive valve rod pivoted drive arrangement, valve rod and the coaxial setting of valve clack and fixed connection, be equipped with the exhaust passage who supplies the gas circulation on valve body and the valve gap, valve clack and disk seat are located on exhaust passage's the route, disk seat fixed mounting be in the valve body and it is equipped with the first through-hole that link up with exhaust passage, be equipped with on the valve clack with the second through-hole that first through-hole corresponds, exhaust passage has and opens when valve clack rotation and first through-hole and second through-hole coincide, half open and three kinds of states of closing when not coinciding when partly coinciding.
A first inlet for air flow to enter is formed in the upper surface of the valve cover, a communicated second inlet is formed below the first inlet, a third inlet which is circumferentially symmetrical to the first inlet is formed in the valve cover, the third inlet is not communicated with the upper surface of the valve cover, and a first annular groove for communicating the first inlet and the third inlet is formed between the first inlet and the third inlet;
the lower surface of the valve body is provided with a first outlet for discharging air flow, a second outlet communicated with the first outlet is arranged above the first outlet, a third outlet which is circumferentially symmetrical to the first outlet is arranged in the valve body, the third outlet is not communicated with the lower surface of the valve body, and a second annular groove communicated with the first outlet and the third outlet is arranged between the first outlet and the third outlet;
the second through hole and the first through hole are symmetrically distributed in the circumferential direction, the first inlet, the first outlet, one of the second through holes and one of the first through holes correspond to each other and are communicated to form an exhaust channel, and the second inlet, the second outlet, the other of the first through holes and the other of the second through holes correspond to each other and are communicated with the first annular groove and the second annular groove to form a flow distribution channel for pressure relief and flow distribution.
First through-hole and second through-hole all adopt waist type circular arc hole, the contained angle of first through-hole is 11.1, and the contained angle of second through-hole is 66.6.
The valve clack includes the lamella body and apron, the both sides face is equipped with the mounting groove who supplies the apron installation respectively about the lamella body, the lamella body is equipped with the centre bore that holds violently the pipe, adopt spherical seal between apron and the mounting groove.
And the surfaces of the valve clack, which are respectively contacted with the valve seat and the valve cover, are sprayed with metal film layers.
The first annular groove and the second annular groove are respectively two and are circumferentially and symmetrically distributed.
The metal film layer is tungsten carbide.
The valve rod comprises an upper valve rod and a lower valve rod which are fixedly arranged at the upper side and the lower side of the center of the valve clack, the upper valve rod and the valve clack are arranged in a hollow mode and communicated with each other, and a valve rod core assembly which is inserted into the upper valve rod and coaxially arranged is arranged in the upper valve rod;
lip-shaped sealing rings are arranged between the lower valve rod and the valve body, between the valve rod core assembly and the upper valve rod and between the upper valve rod and the valve cover, and are filled with lubricating sealing grease.
The valve rod core assembly is characterized in that an upper support is installed on the valve cover, the upper valve rod is rotatably installed on the upper support, and an anti-rotation plate which is used for connecting the valve rod core assembly and the upper support and is bent is arranged between the valve rod core assembly and the upper support.
Go up to be equipped with on the valve stem and connect the cap, it lives to connect the cap parcel adopt normal running fit between valve stem core subassembly and the two, install the pointer on the valve stem core subassembly, the surface of connecting the cap is equipped with the color code that is used for discerning and corresponds the pointer.
The invention has the beneficial effects that: this technical scheme passes through drive arrangement and drives the valve rod rotation, and the valve rod drives the valve clack again and rotates in the cavity that valve gap and disk seat formed, and when the valve clack rotated, the second through-hole can produce the coincidence with exhaust passage, and three kinds of states of partial coincidence and non-coincidence have corresponded the trip valve of this application respectively and have opened, and the part is opened and is closed, and high temperature argon gas for passing through exhaust passage provides continuous interval injection, and it is good to have job stabilization nature, and the effectual advantage of pressure release reposition of redundant personnel.
Drawings
Fig. 1 is a schematic structural diagram of a quick opening mechanism of a quick opening high-temperature spherical sealing cut-off valve in the embodiment of the invention.
Fig. 2 is a top view of the valve cover.
Fig. 3 is a cross-sectional view taken at a-a in fig. 2.
Fig. 4 is a cross-sectional view at B-B in fig. 3.
Fig. 5 is a top view of the valve seat.
Fig. 6 is a cross-sectional view at C-C in fig. 5.
Fig. 7 is a top view of the valve flap.
Fig. 8 is a cross-sectional view taken at D-D in fig. 7.
Fig. 9 is a cross-sectional view of the valve body.
Fig. 10 is a cross-sectional view at E-E in fig. 9.
FIG. 11 is a schematic view of the valve stem, valve flap and valve stem assembly.
FIG. 12 is a square wave plot of the switching time of the high temperature quick opening spherical seal shutoff valve.
Fig. 13 is a partial enlarged view of a portion a in fig. 1.
Detailed Description
The embodiments of the invention will be further described with reference to the accompanying drawings in which:
as shown in the figure, a quick-open mechanism of quick-open high temperature spherical seal trip valve, it includes valve body 1, disk seat 2, valve gap 3, valve clack 4, valve rod 5 and drives 5 pivoted drive arrangement 6 of valve rod, its characterized in that: the valve rod 5 and the valve clack 4 are coaxially arranged and fixedly connected, an exhaust passage for gas to flow is arranged on the valve body 1 and the valve cover 3, the valve clack 4 and the valve seat 2 are positioned on the path of the exhaust passage, the valve seat 2 is fixedly arranged in the valve body 1 and is provided with a first through hole 21 communicated with the exhaust passage, a second through hole 41 corresponding to the first through hole 21 is arranged on the valve clack 4, and the exhaust passage has three states of being opened when the valve clack 4 rotates and the first through hole 21 and the second through hole 41 are overlapped, being half opened when partially overlapped and being closed when partially overlapped; this technical scheme passes through drive arrangement and drives the valve rod rotation, and the valve rod drives the valve clack again and rotates in the cavity that valve gap and disk seat formed, and when the valve clack rotated, the second through-hole can produce the coincidence with exhaust passage, and three kinds of states of partial coincidence and non-coincidence have corresponded the trip valve of this application respectively and have opened, and the part is opened and is closed, and high temperature argon gas for passing through exhaust passage provides continuous interval injection, and it is good to have job stabilization nature, and the effectual advantage of pressure release reposition of redundant personnel.
The technical scheme also discloses a high-temperature quick-opening spherical sealing cut-off valve which comprises a valve body 1, a valve seat 2, a valve cover 3, a valve clack 4, a valve rod 5 and a driving device 6 for driving the valve rod 5 to rotate, wherein a friction adjusting mechanism for adjusting the friction force between the valve clack 4 and the valve seat 2 is installed on the valve rod 5;
the valve rod 5 and the valve flap 4 are coaxially arranged and fixedly connected, an exhaust passage for gas to flow is arranged on the valve body 1 and the valve cover 3, the valve flap 4 and the valve seat 2 are positioned on the path of the exhaust passage, the valve seat 2 is fixedly arranged in the valve body 1 and is provided with a first through hole 21 communicated with the exhaust passage, the valve flap 4 is provided with a second through hole 41 corresponding to the first through hole 21, 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 opening when partially overlapped and closing when not overlapped, the technical scheme drives the valve rod to rotate through a driving device, the valve rod drives the valve rod to rotate in a cavity formed by the valve cover and the valve seat, when the valve flap rotates, the second through hole can be overlapped with the exhaust passage, and the three states of partial overlapping and not overlapping respectively correspond to the cut-off valve of the application, the part is opened and closed, continuous interval injection is provided for high-temperature argon passing through an exhaust passage, and the device has the advantages of good working stability and good pressure relief and flow distribution effects.
The driving device adopts a motor and drives the valve rod and the valve clack to do rotary motion, two waist-shaped circular arc-shaped second through holes are arranged on the valve clack, two first through holes are arranged on the valve seat, the radiuses of the outer circular arc and the inner circular arc of the valve seat are respectively the same as the radiuses of the second through holes of the valve clack, when the valve clack rotates, the first through holes of the valve seat are superposed with the second through holes of the valve clack, airflow can pass through, and the valve is opened; partially overlapped, it is called half-open or half-close; if the two are completely misaligned, the closing is called; the opening and closing of the valve is determined by whether the first through hole of the valve seat is overlapped with the second through hole of the valve clack.
A first inlet 31 for air to enter is formed in the upper surface of the valve cover 3, a second inlet 32 communicated with the first inlet 31 is formed below the first inlet 31, a third inlet 33 circumferentially symmetrical to the first inlet 31 is formed in the valve cover 3, the third inlet 33 is not communicated with the upper surface of the valve cover 3, and a first annular groove 34 communicated with the first inlet 31 and the third inlet 33 is formed between the first inlet 31 and the third inlet 33;
a first outlet 11 for discharging air flow is arranged on the lower surface of the valve body 1, a second outlet 12 communicated with the first outlet 11 is arranged above the first outlet 11, a third outlet 13 circumferentially symmetrical to the first outlet 11 is arranged in the valve body 1, the third outlet 13 is not communicated with the lower surface of the valve body 1, and a second annular groove 14 communicated with the first outlet 11 and the third outlet 13 is arranged between the first outlet 11 and the third outlet 13;
the second through holes 41 and the first through holes 21 are circumferentially and symmetrically distributed, 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 are communicated to form an exhaust channel, and the second inlet 32, the second outlet 12, the other of the first through holes 21 and the other of the second through holes 41 correspond to each other and are communicated with the first annular groove 34 and the second annular groove 14 to form a flow dividing channel for pressure relief and flow dividing; the valve cover and the valve body are auxiliary channels, and the valve cover and the valve body have the functions of flow division and pressure balance, high-temperature air flow enters a first inlet of the valve cover from an upper pipe, two flow directions are arranged behind the first inlet, one flow direction directly flows downwards from a second inlet 32 to the upper plane of the valve clack, the second flow direction flows into a third inlet through a first annular groove and then flows into the valve clack, and the number of the first annular grooves is two. When the air flows of the first inlet and the third inlet are communicated with the second through hole of the valve clack, the air flow can flow into the first through hole of the valve seat through the valve clack, then flow into the first outlet of the valve body through the second annular groove of the valve body, and finally is discharged, so that the pressure relief and flow distribution effects are achieved.
The first through hole 21 and the second through hole 41 are both waist-shaped circular arc holes, the included angle of the first through hole 21 is 11.1 degrees, and the included angle of the second through hole 41 is 66.6 degrees;
the valve driving device selects an electromagnetic speed regulation three-phase asynchronous motor, and the speed regulation range is 125-1250 rpm; when the second through hole on the valve clack and the first through hole on the valve seat are completely overlapped, the valve is completely opened, if the second through hole and the first through hole are partially overlapped, the valve is half-opened or half-closed, if the second through hole and the first through hole are not overlapped, the valve is closed, the two second through holes on the valve clack and the two first through holes on the valve seat are distributed in a circumferential symmetry mode, and therefore the overlap ratio of an approximate square hole can be calculated. The included angle of the second through hole of the valve clack is 66.6 degrees, the included angle of the first through hole of the valve seat is 11.1 degrees, and the included angle of full opening is 66.6-11.1 degrees multiplied by 2=44.4 degrees; the valve function in this embodiment requires a full open time of 20ms, a rotation time per degree of 20 ms/44.4 ° =0.45 ms/degree, a half open time of 0.45 × 11.1=4.995 ≈ 5ms, and a close time of 180 ° -66.6 ° × 0.45=51.03 ≈ 51 ms.
The motor speed is calculated as follows: the motor belt pulley and the valve rod belt pulley have the same diameter, so that the motor belt pulley and the valve rod belt pulley have the same speed. The valve rod and the valve clack are integrated and rotate synchronously. The time for the flap to rotate 1 turn is: 360 ÷ 44.4 × 0.02=0.162 seconds, revolutions per minute: 60 ÷ 0.162=370 rpm, which meets the high requirement that the customer requires the valve to have an opening time of 0.02 seconds and a closing time of less than 0.05 seconds. As shown in fig. 12
Valve rod 5 includes valve rod 52 and lower valve rod 53 and the two fixed mounting be in the upper and lower both sides of valve clack 4 center department, go up valve rod 52 and valve clack 4 all cavity setting and the two intercommunication, upward be equipped with in the valve rod 52 and insert wherein and the valve stem core subassembly 7 of coaxial setting, sealed cooperation between the upper end of valve stem core subassembly 7 and the last valve stem 52 upper end, valve stem core subassembly 7 upper end is equipped with inlet tube 71 and outlet pipe 72, and its inside is equipped with the pipeline that supplies cooling water circulation business turn over to go up valve rod and valve clack, cools off for last valve rod and valve clack.
The pipeline includes inhalant canal 73 and exhalant canal 74, inhalant canal 73 is located the axle center position of valve stem core subassembly 7 and its end is equipped with the violently pipe 75 that stretches into in the valve clack 4, be equipped with the interval between the circumference face of valve stem core subassembly 7 and the valve rod 5 inner wall, the circumference face of valve stem core subassembly 7 is equipped with the intercommunication exhalant canal 76 of exhalant canal 74, during the cooling water gets into inhalant canal from the inlet tube, and inside the valve clack was got into through violently managing all the way down, for the valve clack cooling, then the valve clack was filled gradually to the cooling water, and in getting into the interval of valve stem inner wall and valve stem core subassembly, then got into exhalant canal from the apopore, discharge.
The outer circumference position of valve body 1 and valve gap 3 all installs steel sheet 8 in a sealing manner, steel sheet 8 respectively with be equipped with the interval between valve body 1 and the valve gap 3, be equipped with a plurality of pipe connectors 81 that supply the cooling water business turn over on the steel sheet 8, cooling water gets into from one side, and the opposite side flows out, and the heat absorption cooling is gone on the way, plays for valve body, valve gap refrigerated effect.
Sealing rings 9 are respectively arranged between the valve clack 4 and the valve cover 3 and between the valve clack 4 and the valve seat 2, the sealing rings 9 respectively comprise inner sides and outer sides which are respectively positioned in the second through holes 41, and oil injection holes 91 which are communicated with the sealing rings 9 are arranged on the valve cover 3 and the valve seat 2; when the valve clack rotates at a high speed, the valve clack generates plane friction with the valve cover and the sealing ring of the valve seat, in order to reduce the friction coefficient, dry friction is changed into lubricating friction, lubricating oil flows into the sealing surfaces of the valve seat and the valve cover, and an R-shaped oil storage tank is processed on the sealing surfaces, not shown in the figure; glass oil cups are required to be placed outside the valve cover and the valve seat, and the glass oil cups are required to be supplemented immediately when no oil exists; the oil cup must be placed in a horizontal position above the sealing surface so that the oil will gravitate into the sealing surface.
The valve flap 4 comprises a flap body 42 and a cover plate 43, wherein the upper side surface and the lower side surface of the flap body 42 are respectively provided with an installation groove 44 for installing the cover plate 43, the cover plate 43 and the installation groove 44 are sealed by adopting a spherical surface, and as shown in fig. 13, the flap body 41 is provided with a central hole 45 for accommodating a transverse pipe; the surfaces of the valve clack 4, which are respectively contacted with the valve seat 2 and the valve cover 3, are sprayed with metal film layers 46; the metal film layer 46 is made of tungsten carbide, and as the valve clack, the valve seat and the valve cover sealing pair rotate at high speed, the sealing surface is made of a WC hard material by supersonic spray welding, the hardness reaches more than HRC60, and the valve clack and the valve cover sealing pair have the function of high hardness and high wear resistance.
The valve cap 3 is provided with an upper support 35, the valve body 1 is provided with a lower support 15, the upper valve rod 52 is rotatably arranged on the upper support 35, the lower valve rod 53 is rotatably arranged on the lower support 15, the friction adjusting mechanism is arranged between the lower support 15 and the lower valve rod 53, the friction adjusting mechanism comprises a plurality of adjusting seats 10 and retaining nuts 101, the adjusting seats 10 are sleeved on the outer circumference of the lower valve rod 53 and are in rotating fit with the lower valve rod 53, the outer circumference of the adjusting seats 10 is in threaded fit with the lower support 15, and the lower support 15 is provided with an anti-rotating block 102 corresponding to the adjusting seats 10; the rotating speed of the valve clack is fast, about 370 r/min, the valve clack and the valve seat sealing surface can generate mutual friction in the opening and closing process of the valve, and the friction force is in direct proportion to positive pressure and friction coefficient; in order to reduce the positive pressure, the gap between the two sealing pairs needs to be adjusted, the gap is large, the friction force is small, the leakage is easy, and the valve cannot be sealed; the clearance is small or no clearance exists, the friction force is increased, and the ideal state is that the clearance can be adjusted to be not only sealed, but also the friction force is small; the lower valve rod can be pulled upwards and downwards respectively through the adjusting seat; namely, the sealing pair gap between the valve clack and the valve seat can be adjusted, and the effect of adjusting the sealing friction force of the valve clack is achieved.
A connecting cap 51 is arranged on the upper valve rod 52, the valve rod core assembly 7 is wrapped by the connecting cap 51,
thrust ball bearings 103 are respectively arranged between the adjusting seat 10 and the lower valve rod 53 and between the connecting cap 51 and the valve rod core assembly 7;
a deep groove ball bearing 104 is arranged between the upper valve rod 52 and the upper bracket 35; the ball bearings are filled with lubricating grease during installation, so that the lubricating effect is achieved.
Lip-shaped sealing rings 105 are arranged between the lower valve rod 53 and the valve body 1, between the valve rod core assembly 7 and the upper valve rod 52 and between the upper valve rod 52 and the valve cover 3 and are filled with lubricating sealing grease, so that in order to reduce the friction force of a high-speed rotary sealing pair, engine oil lubricant is added to a sealing surface, the friction coefficient is reduced, the rotation is easy, and the service life is prolonged; in the quick-opening valve, the upper valve rod rotates in the valve cover at a high speed, the lower valve rod rotates in the valve body at a high speed, and in order to prevent high-temperature and high-pressure gas from leaking, a set of mechanical sealing rings needs to be installed, each set of mechanical sealing rings comprises 3 pieces of lip-shaped sealing rings with reinforced high-temperature RPTFE skeletons, and an O-shaped sealing ring made of fluororubber is added outside each lip-shaped sealing ring. And molybdenum disulfide high-temperature lubricant is filled in the lip-shaped sealing ring.
The horizontal pipe 75 is a hollow shaft, and the water inlet passage 73 is communicated with the circumferential surface of the horizontal pipe 75.
Valve rod core subassembly includes hollow main pipe 78 and hollow branch pipe 77, hollow branch pipe inserts hollow main pipe 78 and leaves the interval between the two, hollow branch pipe is as inhalant canal, hollow branch pipe and hollow main pipe 78's interval are as exhalant canal.
An upper bracket 35 is mounted on the valve cover 3, the upper valve rod 52 is rotatably mounted on the upper bracket 35, and an anti-rotation plate 351 which is connected with the valve rod core assembly 7 and the upper bracket 35 and is arranged in a bending manner is arranged between the valve rod core assembly 7 and the upper bracket 35; because lip circle and last valve rod produce the friction when rotating, form the torque, and there are condenser tube head and takeover on the valve rod core subassembly, do not allow valve rod core subassembly to rotate, so set up the jam plate on upper bracket and valve rod core top.
Go up to be equipped with on the valve rod 52 and connect cap 51, it lives to connect cap 51 parcel valve rod core subassembly 7 and adopt normal running fit between the two, install pointer 79 on the valve rod core subassembly 7, the surface of connecting cap 7 is equipped with and is used for discerning and corresponds the color mark of pointer 79, stops at the closed position for letting the valve, at valve rod core subassembly upper portion installation pointer, corresponds the position at the excircle of connecting the cap and scribbles red, blue different color marks.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.

Claims (10)

1. The utility model provides a quick-opening mechanism of quick-opening high temperature spherical seal trip valve, its includes valve body (1), disk seat (2), valve gap (3), valve clack (4), valve rod (5) and drive valve rod (5) pivoted drive arrangement (6), its characterized in that: valve rod (5) and valve clack (4) coaxial setting and fixed connection, be equipped with the exhaust passage who supplies the circulation of gas on valve body (1) and valve gap (3), valve clack (4) and disk seat (2) are located on exhaust passage's the route, disk seat (2) fixed mounting be in valve body (1) and its be equipped with first through-hole (21) that link up with exhaust passage, be equipped with on valve clack (4) with second through-hole (41) that first through-hole (21) correspond, exhaust passage has and opens when valve clack (4) rotate and first through-hole (21) and second through-hole (41) coincide, half open and three kinds of states of closing when not coinciding when partly coinciding.
2. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 1, characterized in that: a first inlet (31) for air to enter is formed in the upper surface of the valve cover (3), a communicated second inlet (32) is arranged below the first inlet (31), a third inlet (33) which is circumferentially symmetrical to the first inlet (31) is formed in the valve cover (3), the third inlet (33) is not communicated with the upper surface of the valve cover (3), and a first annular groove (34) for communicating the first inlet (31) and the third inlet (33) is formed between the first inlet (31) and the third inlet (33);
a first outlet (11) for discharging air flow is formed in the lower surface of the valve body (1), a second outlet (12) communicated with the first outlet (11) is formed in the upper portion of the first outlet (11), a third outlet (13) which is circumferentially symmetrical to the first outlet (11) is formed in the valve body (1), the third outlet (13) is not communicated with the lower surface of the valve body (1), and a second annular groove (14) communicated with the first outlet (11) and the third outlet (13) is formed between the first outlet (11) and the third outlet (13);
the second through holes (41) and the first through holes (21) are circumferentially and symmetrically distributed, 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 are communicated to form an exhaust channel, and the second inlet (32), the second outlet (12), the other of the first through holes (21) and the other of the second through holes (41) correspond to each other and are communicated with the first annular groove (34) and the second annular groove (14) to form a flow dividing channel for pressure relief and flow dividing.
3. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 2, characterized in that: first through-hole (21) and second through-hole (41) all adopt waist type circular arc hole, the contained angle of first through-hole (21) is 11.1, and the contained angle of second through-hole (41) is 66.6.
4. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 1, characterized in that: valve clack (4) are including the lamella body (42) and apron (43), the both sides face is equipped with mounting groove (44) that supply apron (43) installation respectively about the lamella body (42), the lamella body (41) are equipped with holds centre bore (45) of violently managing, adopt spherical seal between apron (43) and mounting groove (44).
5. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 4, characterized in that: and a metal film layer (46) is sprayed on the surfaces of the valve clack (4) which are respectively contacted with the valve seat (2) and the valve cover (3).
6. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 2, characterized in that: the first annular groove (34) and the second annular groove (14) are respectively two and are circumferentially and symmetrically distributed.
7. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 4, characterized in that: the metal film layer (46) is tungsten carbide.
8. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 1, characterized in that: the valve rod (5) comprises an upper valve rod (52) and a lower valve rod (53), the upper valve rod (52) and the lower valve rod (53) are fixedly installed on the upper side and the lower side of the center of the valve clack (4), the upper valve rod (52) and the valve clack (4) are arranged in a hollow mode and communicated with each other, and a valve rod core assembly (7) which is inserted into the upper valve rod (52) and coaxially arranged is arranged in the upper valve rod (52);
lip-shaped sealing rings (105) are arranged between the lower valve rod (53) and the valve body (1), between the valve rod core assembly (7) and the upper valve rod (52) and between the upper valve rod (52) and the valve cover (3), and are filled with lubricating sealing grease.
9. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 8, characterized in that: install upper bracket (35) on valve gap (3), upward rotatable the installing of valve rod (52) on upper bracket (35), be equipped with between valve rod core subassembly (7) and upper bracket (35) and connect the two and buckle the anti-rotating plate (351) that sets up.
10. The quick opening mechanism of the quick opening high-temperature spherical sealing cut-off valve according to claim 8, characterized in that: go up to be equipped with on valve rod (52) and connect cap (51), it lives to connect cap (51) parcel valve rod core subassembly (7) and adopt normal running fit between the two, install pointer (79) on valve rod core subassembly (7), the surface of connecting cap (7) is equipped with the color code that is used for discerning and corresponds the pointer.
CN202011336531.XA 2020-11-25 2020-11-25 Quick opening mechanism of quick opening high-temperature spherical sealing cut-off valve Active CN112361025B (en)

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CN202011336531.XA CN112361025B (en) 2020-11-25 2020-11-25 Quick opening mechanism of quick opening high-temperature spherical sealing cut-off valve
PCT/CN2020/136379 WO2022110341A1 (en) 2020-11-25 2020-12-15 Quick opening mechanism for quick-opening high-temperature spherical sealing shut-off valve
KR1020217038477A KR102422682B1 (en) 2020-11-25 2020-12-15 Quick opening mechanism of quick opening high temperature spherical sealing shutoff valve

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US11280416B1 (en) 2020-11-25 2022-03-22 Zhejiang Petrochemical Valve Co., Ltd. High-temperature quick-opening spherical sealing shut-off valve
WO2022110342A1 (en) * 2020-11-25 2022-06-02 浙江石化阀门有限公司 High-temperature quick-opening spherical sealing shut-off valve

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WO2022110342A1 (en) * 2020-11-25 2022-06-02 浙江石化阀门有限公司 High-temperature quick-opening spherical sealing shut-off valve

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