CN107435744A - Static seal driven type gate valve with inclined-plane alloy seal and scarfing cinder structure - Google Patents
Static seal driven type gate valve with inclined-plane alloy seal and scarfing cinder structure Download PDFInfo
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- CN107435744A CN107435744A CN201710841230.4A CN201710841230A CN107435744A CN 107435744 A CN107435744 A CN 107435744A CN 201710841230 A CN201710841230 A CN 201710841230A CN 107435744 A CN107435744 A CN 107435744A
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- static seal
- seal
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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
- 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
- F16K3/12—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 wedge-shaped arrangements of sealing faces
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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
- 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
- F16K3/0227—Packings
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Sliding Valves (AREA)
Abstract
A kind of static seal driven type gate valve with inclined-plane alloy seal and scarfing cinder structure is provided, including power drive unit, magnetic drive, valve body, valve element and hubbed flange, power drive unit is connected with magnetic drive, magnetic drive is connected with valve, valve body lower portion side is connected with hubbed flange, valve inner sets valve core channel, the medium channel to be intersected vertically with valve core channel axis is set inside valve body and hubbed flange, the scarfing cinder passage connected with medium channel is additionally provided with valve body, valve element is pyramidal structure, valve core channel bottom is the pyramidal structure being adapted to valve element, valve element is satisfied with valve core channel, inclined-plane movable sealing structure is set between valve element side and hubbed flange opposite face, valve element opposite side is provided with multigroup elastic parts.The present invention forms outer seal configuration in reliable, effectively prevents valve leakage out of steam system, solve the problems, such as that existing valve leak rate is high and service life is short, cost is high by static seal structure and the pyramidal structure and inclined-plane movable sealing structure of combination valve element and valve core channel.
Description
Technical field
The invention belongs to valve technology field, and in particular to a kind of static seal with inclined-plane alloy seal and scarfing cinder structure passes
Dynamic formula gate valve.
Background technology
Nuclear power, petrochemical industry, national standard are defeated in storage and pipeline for severe corrosive, hot and hypertoxicity medium
Inside and outside slip level requirement during sending is very strict.But in practical work, due to valve seal problem, it is particularly
Under high-temperature and high-pressure conditions, limited by conditions such as encapsulant, sealing structure, radioactivity, sealing force and manufacturing process,
The requirement of national standard is extremely difficult to using domestic valve.And imported valve is used, although as defined in being up to state standards
Levels of leakage, but imported valve due to sealing surface wear, scratch the problem of, service life is very short, and procurement price is high, significantly
Improve cost.It is therefore desirable to propose to improve.
The content of the invention
Present invention solves the technical problem that：A kind of static seal driven type with inclined-plane alloy seal and scarfing cinder structure is provided
Gate valve, the present invention by the inclined-plane movable sealing structure and the pyramidal structure of valve element and valve core channel between hubbed flange and valve element,
Valve sealing face fitting can be made even closer, and combine three static seal structures of valve, so that valve is formed reliably
Interior outer seal configuration, effectively prevents valve leakage out of steam system, solves existing domestic valve internal and outernal leakage rate level and does not reach Standard
And the problem of imported valve service life is short, cost is high.
The technical solution adopted by the present invention：Static seal driven type gate valve with inclined-plane alloy seal and scarfing cinder structure, bag
Include power drive unit, magnetic drive, valve body, valve element and hubbed flange, the power drive unit output end and Magnetic drive
The input connection of device upper end, the magnetic drive lower end are fixedly connected with valve body upper end static seal, the valve body lower portion one
Side seal is connected with hubbed flange, and the valve inner is axially arranged with valve core channel, is provided with inside the valve body and hubbed flange
Its axis intersects vertical medium channel with valve core channel axis, and the valve inner is additionally provided with the scarfing cinder connected with medium channel
Passage, the valve element are the pyramidal structure that diameter of section is gradually reduced from top to bottom, and the valve core channel top is cylindric knot
Structure and its underpart are the pyramidal structure being adapted to valve core outer surface, and the valve element is installed on inside the valve core channel of valve body, described
Magnetic drive output end is connected with valve element upper end by leading screw and drives it along valve core channel and moved up and down and when under valve element
Move on to the cut-out and conducting realized when being bonded with valve core channel lower taper physical fit to medium in medium channel, the valve element
The inclined-plane that formation rigid seal is secondary when valve element moves down into valve core channel lower limit is provided between side and hubbed flange opposite face to move
Sealing structure, the valve element opposite side are provided with multigroup rolled with valve core channel inner surface and touch and inclined-plane movable sealing structure is provided
The elastic parts of sealing force.
Wherein, the inclined-plane movable sealing structure includes static seal body and dynamic sealing body, on the valve element with hubbed flange pair
Side is answered to be formed with a cutting plane, the dynamic sealing body is embedded on cutting plane, and the dynamic sealing body is relative with hubbed flange
One side be with to valve element bottom extend and to the close inclined dynamic sealing inclined-plane of valve core axis, the hubbed flange and valve body
It is fixedly connected, is tightly connected between the hubbed flange and the phase veneer of valve body by sealing ring I, the static seal body is fixed on
Hubbed flange is put in valve body and on the end face relative with cutting plane, and the hubbed flange puts in spiral shell on one end in valve body
Line is combined with the clamp nut for compressing static seal body, and the static seal body and hubbed flange, which fit, passes through sealing ring between face
II sealing, the static seal body one side relative with the cutting plane of valve element are with moving when valve element moves down into valve core channel lower limit
The static seal inclined-plane that sealing inclined-plane adaptation is close to.
Further, the static seal body and dynamic sealing body are made of high rigidity tungsten Nitinol.
Further, the medium channel is included in valve body and its axis and the medium of valve core channel diameter parallel enter
Mouthful section passage and in valve body and media outlet section passage that its axis intersects vertically with valve core channel axis, and including setting
Inside the hubbed flange and dielectric channel hole that its axis is coaxial with media outlet section passage, the medium inlet section passage and Jie
Matter outlet block channel head and the tail are connected；The scarfing cinder passage end and medium inlet section passage vertical connection, the scarfing cinder passage are another
One end connects with valve core channel bottom.
Wherein, the elastic parts uses magnetic spring structure, and every group of elastic parts includes magnetic spring and ball, described
The side opposite with hubbed flange is provided with installing blind on valve element, and the magnetic spring is in installing blind, outside the magnetic spring
End is connected with rolls the ball touched with the valve core channel inner periphery in valve body.
Further, the magnetic spring is made up of two pieces of permanent magnets of adjacent surface polarity identical, two pieces of permanent magnets
It is made of samarium-cobalt permanent-magnetic material.
Further, the elastic parts installation group is several determines and is no less than according to medium character in gate valve and operating pressure
4 groups.
Wherein, the magnetic drive includes support, spacer, outer rotor and internal rotor, and the outer rotor and internal rotor are
Magnetic device, the outer rotor are placed on internal stent, and the internal rotor is placed on inside outer rotor and between outer rotor and internal rotor
Provided with spacer, the pedestal lower end is fixedly connected with valve body upper end, and the seam inside the pedestal lower end compresses spacer lower end
On valve body, sealed between the spacer and valve body phase veneer by sealing ring III, the internal rotor passes through internal thread and leading screw
The external screw thread connection driving leading screw of upper end is moved up and down, and the leading screw lower end is flexibly connected simultaneously with being formed on the T-slot of valve element upper end
Band movable valve plug moves up and down along valve core channel.
Further, the power drive unit includes motor, shaft coupling and motor support base, the motor support base upper end with
Electric machine casing is fixedly connected, and the motor support base lower end is fixedly connected with the pedestal upper end in magnetic drive, the shaft coupling
One end is fixedly connected with motor output shaft, the shaft coupling other end and the power input shaft of outer rotor upper end in magnetic drive
It is fixedly connected.
Further, the valve core channel top is fixed with limited block.
The present invention compared with prior art the advantages of：
1st, the power of motor is by the rotating excitation field non contact transmission between outer rotor and internal rotor, outside in this programme
Across spacer between rotor and internal rotor, it is achieved thereby that be instead of between spacer and valve body by the static seal of sealing ring III
Dynamic sealing between traditional power transmission shaft and valve body；Hubbed flange is fixedly connected with the valve body and between both phase veneers by close
Seal I forms static seal connection；Static seal body and hubbed flange fit the static seal knot formed by sealing ring II between face
Structure；Static seal structure that above three sealing ring is formed and combine inclined-plane movable sealing structure between hubbed flange and valve element and
The pyramidal structure of valve element and valve core channel, so as to form outer seal configuration in reliable, valve leakage out of steam system is effectively prevented, solved existing
There is the inside and outside slip level of domestic valve not reach the problem of Standard and imported valve service life are short, cost is high；
2nd, the pyramidal structure that diameter of section from top to bottom is gradually reduced is made in valve element in this programme, by valve core channel bottom
The pyramidal structure being adapted to valve core outer surface is made, the face bevel that dynamic sealing body and the sealing of static seal body are affixed, valve element
By the combination of pyramidal structure and ramp structure when moving down into valve core channel bottom, it can be bonded the face at two even closer,
Valve element is bonded also be bonded with the inclined-plane of static seal body for dynamic sealing body with the taper surface of valve core channel provides certain sealing
Power, and this structure can compensate for the abrasion of inclined-plane movable sealing structure caused by sealing the problem of declining, further improve
The sealing property of valve；
3rd, the static seal body in this programme in static and dynamic sealing structure and dynamic sealing body use high rigidity tungsten Nitinol,
In static seal body and dynamic sealing body relative movement, sealing surface is less prone to scuffing, greatly extends gate valve service life；
4th, this programme is provided with multigroup elastic parts in the valve element side opposite with hubbed flange, and elastic parts use is
The magnetic spring structure being made up of magnetic spring and ball, ball is in the presence of magnetic spring mutual expelling force, with valve core channel inner cylinder face
It is in rolling contact, reduces the frictional force that valve element moves in valve core channel；Meanwhile make static seal body and dynamic sealing when valve element moves down
When body phase is to gluing, sealing, the magnetic spring mutual expelling force for using high temperature resistant permanent-magnet material to manufacture provides for static seal body and dynamic sealing body
Enough sealing forces during low pressure needed for sealing, and combine the high rigidity of static seal body and dynamic sealing body material, wear-resisting, resistance to height
Temperature, high pressure, the performance of corrosion and Flouride-resistani acid phesphatase, realize valve plane contact rigid interior sealing well；
5th, this programme is provided with scarfing cinder passage, scarfing cinder passage end and medium inlet section passage vertical connection in valve inner,
The scarfing cinder passage other end is connected with valve core channel bottom, and valve is opened, and under media flow state, a part of medium is along medium
Passage flows, and another part medium flows into valve core channel bottom along scarfing cinder passage, and the dregs of valve core channel bottom precipitation are blown
Flowed up after rising along valve core channel, be finally imported into medium channel and blown out from outlet by the dregs of precipitation, by this clear
Slag mode, the dregs avoided in medium precipitate in valve body, prevent dregs accumulation from influenceing valve element and moving downward, and then influence valve
Door closure, the hard particles damage alloy seal face being also prevented from dregs.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structure enlargement diagram of valve element and valve body and inclined-plane movable sealing structure in the present invention；
Fig. 3 is Fig. 1 A-A to lateral partial structurtes sectional view.
Embodiment
1-3 describes embodiments of the invention below in conjunction with the accompanying drawings.
Static seal driven type gate valve with inclined-plane alloy seal and scarfing cinder structure, as shown in figure 1, being filled including power drive
Put 21, magnetic drive 22, valve body 16, valve element 17 and hubbed flange 1.
The output end of power drive unit 21 is connected with the upper end input of magnetic drive 22.Specifically, such as Fig. 1 institutes
Show, the power drive unit 21 includes motor 10, shaft coupling 11 and motor support base 12, and the motor support base 12 plays support motor
Effect, the upper end of motor support base 12 is fixedly connected by fastener with the housing of motor 10, the lower end of motor support base 12
It is fixedly connected by fastener with the upper end of magnetic drive 22, described one end of shaft coupling 11 passes through general flat key and the power of motor 10
Output shaft is fixedly connected, and the other end of shaft coupling 11 is fixed by power intake in fastener and magnetic drive 22 to be connected
Connect.
The lower end of magnetic drive 22 is sealedly and fixedly connected with the upper end of valve body 16.Specifically, the as shown in figure 1, magnetic
Transmission device 22 includes support 6, spacer 7, outer rotor 8 and internal rotor 9, wherein, support 6, which rises, compresses spacer 7 and support motor 10
Effect, the outer rotor 8 and internal rotor 9 are magnetic device.The upper end of support 6 passes through fastener and power drive unit 21
In motor support base 12 be fixedly connected, so as to playing a part of support to motor 10, the lower end of support 6 passes through fastener and valve
The upper end of body 16 is fixedly connected.The outer rotor 8 is placed on inside support 6, the power input shaft and shaft coupling on the top of outer rotor 8
11 lower ends are fixedly connected, so that motor 10 drives outer rotor 8 to rotate；The internal rotor 9 is placed on inside outer rotor 8, Er Qie
Spacer 7 is provided between outer rotor 8 and internal rotor 9, the lower end of support 6 is compressed the lower end of spacer 7 by its internal seam 601
On valve body 16, sealed between the spacer 7 and the phase veneer of valve body 16 by sealing ring III 15, spacer 7 and sealing ring III 15 1
Rise, gate valve inner chamber is separated with exterior space, instead of with this static seal structure dynamic between traditional power transmission shaft and valve body
Sealing, improve sealing property.
As shown in Fig. 2 the valve element 17 is the pyramidal structure that diameter of section is gradually reduced from top to bottom, in the valve body 16
Portion is axially arranged with valve core channel 1601, and the top of valve core channel 1601 is cylindrical-shaped structure and its underpart is and the appearance of valve element 17
The pyramidal structure of face adaptation, the valve element 17 are installed on inside the valve core channel 1601 of valve body 16.On the valve core channel 1601
Portion is fixed with limited block 14 by fastener, and the internal rotor 9 in the magnetic drive 22 passes through leading screw 13 and drives the edge of valve element 17
Valve core channel 1601 to move up and down and fit the pyramidal structure of both with the bottom of valve core channel 1601 when valve element 17 moves down into
The cut-out and conducting to medium in valve are realized during with fitting, wherein, the internal rotor 9 passes through internal thread and the upper end of leading screw 13
External screw thread is connected, and the lower end of leading screw 13 is flexibly connected through limited block 14 with being formed on the T-slot of the upper end of valve element 17.
The bottom side of valve body 16 is sealedly connected with hubbed flange 1, and the hubbed flange 1 passes through fastener and valve body 16
It is fixedly connected, is tightly connected between the hubbed flange 1 and the phase veneer of valve body 16 by sealing ring I 2, the hubbed flange 1
The end face connected with valve body 16 pierces into valve body 16 in corresponding hole and is placed in the corresponding edge of valve core channel 1601.
Intersect vertical medium with the axis of valve core channel 1601 provided with its axis and lead in the inside of valve body 16 and hubbed flange 1
Road 23, the medium channel 23 are cylindrical-shaped structure.Specifically, as shown in figure 1, the medium channel 23 includes being located at valve body 16
The medium inlet section passage 1602 of interior bottom and its axis with the diameter parallel of valve core channel 1601 and interior and its axle located at valve body 16
The media outlet section passage 1603 that line and the axis of valve core channel 1601 intersect vertically, and including located at the inside of hubbed flange 1 and
Its axis dielectric channel hole 101 coaxial with media outlet section passage 1603, the medium inlet section passage 1602 and medium go out
Mouth section passage 1603 is connected, and the media outlet section passage 1603 is connected with dielectric channel hole 101 by valve core channel 1601.
The scarfing cinder passage 1604 connected with medium channel 23 is additionally provided with inside the valve body 16, as shown in figure 1, the scarfing cinder
The axis of passage 1604 it is vertical with medium inlet 1602 axis of section passage and with the diameter parallel of media outlet section passage 1603, it is described clear
The one end of slag passage 1604 and the vertical connection of medium inlet section passage 1602, the other end of scarfing cinder passage 1604 and valve core channel
1601 bottoms connect.Valve open, under media flow state, a part of medium from valve inlet a flow into valve body 16 after along
Medium channel 23 flows, and another part medium flows into the bottom of valve core channel 1601 along scarfing cinder passage 1604, by valve core channel
The dregs of 1601 bottom precipitations flow up after blowing afloat along valve core channel 1601, be finally imported into medium channel 23 and from outlet b
The dregs of precipitation are blown out, by this scarfing cinder mode, the dregs avoided in medium precipitate in valve body 16, prevent dregs heap
Product influences valve element 17 and moved downward, and then influences valve closure, the hard particles damage alloy seal being also prevented from dregs
Face.
It is provided between the side of valve element 17 and the opposite face of hubbed flange 1 when valve element 17 moves down into the lower limit of valve core channel 1601
When form the secondary inclined-plane movable sealing structure 24 of rigid seal.Specifically, as shown in Fig. 2 the inclined-plane movable sealing structure 24 includes
Static seal body 4 and dynamic sealing body 18, a cutting plane 1701 is formed with 1 corresponding side of hubbed flange on the valve element 17, it is described
Dynamic sealing body 18 is embedded on cutting plane 1701, and the dynamic sealing body 18 one side relative with hubbed flange 1 is with to valve
The bottom of core 17 extends to the close inclined dynamic sealing inclined-plane 1801 of the axis of valve element 17, and the static seal body 4 is fixed on band cervical approach
Orchid 1 is put in valve body 16 and on the end face relative with cutting plane 1701, one end that the hubbed flange 1 is put in valve body 16
On be formed with screw thread, the threaded engagement of clamp nut 5 and the end of hubbed flange 1 simultaneously compresses static seal body 4, the static seal body 4
Fit with hubbed flange 1 and sealed by sealing ring II 3 between face, the cutting plane 1701 of the static seal body 4 and valve element 17
Relative one side is to be adapted to the static seal being close to dynamic sealing inclined-plane 1801 when valve element 17 moves down into 1601 lower limit of valve core channel
Inclined-plane 401.The present invention valve element 17 is made the pyramidal structure that diameter of section from top to bottom is gradually reduced, by under valve core channel 1601
The pyramidal structure being adapted to the outer surface of valve element 17 is made in portion, and dynamic sealing body 18 and static seal body 4 are sealed to the face being affixed and are made tiltedly
It by the combination on pyramidal structure and inclined-plane when face, valve element 17 move down into 1601 bottom of valve core channel, can be bonded the face at two
Even closer, it also can be being bonded for dynamic sealing body 18 and static seal body 4 that valve element 17 is bonded with the taper surface of valve core channel 1601
Certain sealing force is provided, and this pyramidal structure can compensate for inclined-plane movable sealing structure 24 and wear under caused sealing
The problem of drop, further improve the sealing property of valve.
Preferably, the static seal body 4 and dynamic sealing body 18 are made of high rigidity tungsten Nitinol, make static seal body
4 and the relative movement of dynamic sealing body 18 in, ensure that sealing surface is less prone to scuffing, greatly extend gate valve service life.
The opposite side of valve element 17 is provided with multigroup rolled with the inner surface of valve core channel 1601 and touched and to movable sealing structure 24
The elastic parts 25 of sealing force is provided.Wherein, the installation group of elastic parts 25 is several presses according to medium character in gate valve and work
Power determines and no less than 4 group.Specifically, as shown in figure 3, the elastic parts 25 uses magnetic spring structure, every group of elasticity
Component 25 includes magnetic spring 20 and ball 19, and the side opposite with hubbed flange 1 is provided with installing blind 1702 on the valve element 17,
In installing blind 1702, the outer end of magnetic spring 20 is connected with and the valve core channel 1601 in valve body 16 the magnetic spring 20
Inner periphery rolls the ball 19 touched.Preferably, the magnetic spring 20 is by two pieces of permanent magnets of adjacent surface polarity identical
Form, two pieces of permanent magnets are made of samarium-cobalt permanent-magnetic material.Ball 19 is in the presence of the mutual expelling force of magnetic spring 20, with valve element
The inner cylinder face of passage 1601 is in rolling contact, and reduces the frictional force of the motion in valve core channel 1601 of valve element 17；Meanwhile work as valve element
17 move down when making dynamic sealing body 18 and the static seal body 4 fit to form rigid seal pair, using the manufacture of high temperature resistant permanent-magnet material
Mutual expelling force caused by magnetic spring 20 is enough sealings needed for sealing when static seal body 4 and dynamic sealing body 18 provide low pressure
Power, with reference to the high rigidity of static seal body 4 and the material itself of dynamic sealing body 18, wear-resisting, high temperature resistant, high pressure, corrosion and Flouride-resistani acid phesphatase
Performance, realize valve plane contact rigid interior sealing well.
The present invention power transmission line be：Motor 10 drives outer rotor 8 in magnetic drive 22 to revolve by shaft coupling 11
Turn, outer rotor 8 drives internal rotor 9 to rotate by its rotating excitation field through spacer 7, and the rotation of internal rotor 9 passes through it and leading screw 13
Between screw thread coordinate driving leading screw 13 to be axially moved along valve core channel 1601, and then the valve core channel with movable valve plug 17 along valve body 16
1601 are axially moved.In this way, when realizing that motor 10 rotates, valve element 17 is axially moved along valve core channel 1601.Motor
10 when turning clockwise, and valve element 17 moves downward or upward；During motor rotate counterclockwise, valve element 17 is moved upwardly or downwardly.
The medium cut-out of the present invention and the implementation of conducting function and sealing function are：Driving of the valve element 17 in motor 10
Under move downward, when the conical surface adaptation of conical outer surface and the bottom of valve core channel 1601 of valve element 17 is close to, valve element 17
Stop motion, now the dynamic sealing inclined-plane 1801 on dynamic sealing body 18 and the static seal on the static seal body 4 in hubbed flange 1 are oblique
Face 401, which is completely superposed, to be affixed, and rigid seal pair is formed under the spring-force driven dual of magnetic spring 20, has completely cut through medium flow field
Dynamic, gate valve is closed, and realizes the medium cutting function of gate valve.Now, valve body 16, static seal body 4, dynamic sealing body 18, spacer 7,
Sealing ring 15 forms the pressure boundary under valve-closed state, and spacer 7, valve body 16 and sealing ring III 15 form anti-leakage sealing
Pair, static seal body 4 and dynamic sealing body 18 form leakage sealing pair in anti-.Wherein, static seal body 4 and dynamic sealing body 18 form rigidity
Sealing force during sealing pair is magnetic spring force, pressure medium and the valve element 17 and the taper-face contact of valve core channel 1601 of magnetic spring 20
The sealing force of formation.During high-pressure medium, sealing force is based on pressure medium；During low-pressure medium, based on magnetic spring force.
When motion upwards under driving of the valve element 17 in motor 10, the upper edge of valve element 17 touches the lower surface of limited block 14
When, valve element 17 reaches upper limit position, and stop motion, and now dynamic sealing body 18 and the static seal body 4 in hubbed flange 1 are wrong
Open, medium channel 23 is opened completely, and media flow conducting, gate valve is opened, and realizes the medium conducting function of gate valve.Now, valve
The pressure side that body 16, sealing ring I 2, static seal body 4, hubbed flange 1, spacer 7, sealing ring III 15 are formed under valve open mode
Boundary, spacer 7, valve body, sealing ring III 15 and static seal body 4, sealing ring I 2, hubbed flange 1 form anti-leakage sealing pair respectively.
The course of work of the present invention is：Start motor 10, motor 10 drives outer rotor 8 to rotate so that the synchronous rotation of internal rotor 9
Turn, leading screw 13 rises with movable valve plug 17, and the sealing pair that static seal body 4 and dynamic sealing body 18 are formed departs from, in the arrival of valve element 17
Powered off during stroke-limit, the medium channel on valve body 16 is connected with the dielectric channel hole 101 on hubbed flange 1, realizes that valve is opened
Open；When needing to close valve, motor 10 is inverted, leading screw 13 declines with movable valve plug 17, the conical outer surface and valve element of valve element 17
When the conical surface adaptation of the bottom of passage 1601 is close to, the inclined-plane of static seal body 4 and dynamic sealing body 18 completely attaches to, and in medium
In the presence of the taper-face contact sealing force of pressure, magnetic spring force and valve element 17 and valve core channel 1601, rigid seal pair is formed, is cut
Disconnected flow of media, realize that valve is closed.
Sealing structure in the present invention is as follows：The power of motor 10 is by the rotary magnetic between outer rotor 8 and internal rotor 9
Field non contact transmission, across spacer 7 between outer rotor 8 and internal rotor 9, it is achieved thereby that being led to between spacer 7 and valve body 16
The static seal for crossing sealing ring III 15 instead of dynamic sealing between traditional power transmission shaft and valve body；Hubbed flange 1 is solid with valve body 16
Static seal is formed between fixed connection and both phase veneers by sealing ring I 2 to connect；Static seal body 4 fits with hubbed flange 1
The static seal structure formed between face by sealing ring II 3.The static seal structure and junction belt that above three sealing ring is formed
The blue inclined-plane movable sealing structure and the taper integrated structure of valve element and valve core channel between valve element of cervical approach, it is reliable so as to be formed
Interior outer seal configuration, effectively prevents valve leakage out of steam system, solves the inside and outside slip level of existing domestic valve and does not reach Standard
And the problem of imported valve service life is short, cost is high.
Above-described embodiment, simply presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this
The equivalence changes that content described in invention claim is done, it all should be included within scope of the invention as claimed.
Claims (10)
1. the static seal driven type gate valve with inclined-plane alloy seal and scarfing cinder structure, including power drive unit (21), magnetic pass
Dynamic device (22), valve body (16), valve element (17) and hubbed flange (1), power drive unit (21) output end and Magnetic drive
The input connection of device (22) upper end, magnetic drive (22) lower end are fixedly connected with valve body (16) upper end static seal, institute
State valve body (16) bottom side and be sealedly connected with hubbed flange (1), it is characterised in that：It is axially arranged with valve inside the valve body (16)
Intersect inside core passage (1601), the valve body (16) and hubbed flange (1) provided with its axis with valve core channel (1601) axis
Vertical medium channel (23), the valve body (16) is internal to be additionally provided with the scarfing cinder passage (1604) connected with medium channel (23),
The valve element (17) is the pyramidal structure that diameter of section is gradually reduced from top to bottom, and valve core channel (1601) top is cylinder
Shape structure and its underpart are the pyramidal structure being adapted to valve element (17) outer surface, and the valve element (17) is installed on the valve of valve body (16)
Core passage (1601) is internal, and magnetic drive (22) output end is connected and driven with valve element (17) upper end by leading screw (13)
It moves up and down along valve core channel (1601) and fitted when valve element (17) moves down into valve core channel (1601) lower taper structure
The cut-out and conducting to medium in medium channel (23), valve element (17) side and hubbed flange (1) phase are realized during with fitting
It is provided between opposite and the secondary inclined-plane dynamic sealing knot of rigid seal is formed when valve element (17) moves down into valve core channel (1601) lower limit
Structure (24), valve element (17) opposite side are provided with multigroup rolled with valve core channel (1601) inner surface and touched and to inclined-plane dynamic sealing
Structure (24) provides the elastic parts (25) of sealing force.
2. the static seal driven type gate valve according to claim 1 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：The inclined-plane movable sealing structure (24) includes static seal body (4) and dynamic sealing body (18), on the valve element (17) with neck
The corresponding side of flange (1) is formed with a cutting plane (1701), and the dynamic sealing body (18) is embedded on cutting plane (1701), institute
State dynamic sealing body (18) and the relative one side of hubbed flange (1) be with its to valve element (17) bottom extend and to valve element (17) axis
Close to inclined dynamic sealing inclined-plane (1801), the hubbed flange (1) is fixedly connected with valve body (16), the hubbed flange (1)
It is tightly connected between the phase veneer of valve body (16) by sealing ring I (2), the static seal body (4) is fixed on hubbed flange (1)
Put in valve body (16) and on the end face relative with cutting plane (1701), the hubbed flange (1) is put in valve body (16)
One end on threaded engagement have the clamp nut (5) for compressing static seal body (4), the static seal body (4) and hubbed flange (1)
Fit and sealed by sealing ring II (3) between face, the static seal body (4) is relative with the cutting plane (1701) of valve element (17)
One side be when valve element (17) moves down into valve core channel (1601) lower limit with dynamic sealing inclined-plane (1801) be adapted to be close to it is quiet close
Seal inclined-plane (401).
3. the static seal driven type gate valve according to claim 2 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：The static seal body (4) and dynamic sealing body (18) are made of high rigidity tungsten Nitinol.
4. there is inclined-plane alloy seal and the static seal driven type gate valve of scarfing cinder structure according to claim 1,2 or 3, its
It is characterised by：The medium channel (23) includes in valve body (16) and its axis and valve core channel (1601) diameter parallel
Medium inlet section passage (1602) and Jie that interior and its axis intersects vertically with valve core channel (1601) axis located at valve body (16)
Matter outlet block channel (1603), and including internal and its axis and media outlet section passage (1603) located at hubbed flange (1)
Coaxial dielectric channel hole (101), the medium inlet section passage (1602) are connected with media outlet section passage (1603)；It is described
Scarfing cinder passage (1604) one end and medium inlet section passage (1602) vertical connection, scarfing cinder passage (1604) other end and valve
Core passage (1601) bottom connects.
5. the static seal driven type gate valve according to claim 1 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：The elastic parts (25) uses magnetic spring structure, and every group of elastic parts (25) includes magnetic spring (20) and ball
(19), side opposite with hubbed flange (1) on the valve element (17) is provided with installing blind (1702), and the magnetic spring (20) sets
In installing blind (1702), magnetic spring (20) outer end is connected with and valve core channel (1601) interior cylinder in valve body (16)
The ball (19) that surface scrolls touch.
6. the static seal driven type gate valve according to claim 5 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：The magnetic spring (20) is made up of two pieces of permanent magnets of adjacent surface polarity identical, and two pieces of permanent magnets use SmCo
Permanent-magnet material is made.
7. there is inclined-plane alloy seal and the static seal driven type gate valve of scarfing cinder structure according to claim 1,5 or 6, its
It is characterised by：Elastic parts (25) the installation group is several to be determined according to medium character in gate valve and operating pressure and no less than 4 groups.
8. the static seal driven type gate valve according to claim 1 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：The magnetic drive (22) includes support (6), spacer (7), outer rotor (8) and internal rotor (9), the outer rotor (8)
It is magnetic device with internal rotor (9), the outer rotor (8) is placed on support (6) inside, and the internal rotor (9) is placed on outer rotor (8)
It is internal and be provided with spacer (7) between outer rotor (8) and internal rotor (9), support (6) lower end and valve body (16) upper end fixation company
Connect, spacer (7) lower end is pressed on valve body (16) by the seam (601) inside support (6) lower end, the spacer (7) with
Sealed between valve body (16) phase veneer by sealing ring III (15), the internal rotor (9) passes through internal thread and leading screw (13) upper end
External screw thread connection driving leading screw (13) move up and down, leading screw (13) lower end and be formed on valve element (17) upper end T-slot live
It is dynamic to connect and moved up and down with movable valve plug (17) along valve core channel (1601).
9. the static seal driven type gate valve according to claim 8 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：The power drive unit (21) includes motor (10), shaft coupling (11) and motor support base (12), the motor support base
(12) upper end is fixedly connected with the housing of motor (10), motor support base (12) lower end and the support in magnetic drive (22)
(6) upper end is fixedly connected, and described shaft coupling (11) one end is fixedly connected with motor (10) output shaft, and the shaft coupling (11) is another
End is fixedly connected with the power input shaft of outer rotor (8) upper end in magnetic drive (22).
10. the static seal driven type gate valve according to claim 9 with inclined-plane alloy seal and scarfing cinder structure, its feature
It is：Valve core channel (1601) top is fixed with limited block (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841230.4A CN107435744B (en) | 2017-09-18 | 2017-09-18 | Static seal transmission type gate valve with inclined plane alloy seal and slag removal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841230.4A CN107435744B (en) | 2017-09-18 | 2017-09-18 | Static seal transmission type gate valve with inclined plane alloy seal and slag removal structure |
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| Publication Number | Publication Date |
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| CN107435744A true CN107435744A (en) | 2017-12-05 |
| CN107435744B CN107435744B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710841230.4A Active CN107435744B (en) | 2017-09-18 | 2017-09-18 | Static seal transmission type gate valve with inclined plane alloy seal and slag removal structure |
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| Country | Link |
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| CN (1) | CN107435744B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482052A (en) * | 2019-08-15 | 2019-11-22 | 江苏鑫华能环保工程股份有限公司 | The valve arrangement and storage bin of particulate matter and liquid mixture storage bin |
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| CN110482052A (en) * | 2019-08-15 | 2019-11-22 | 江苏鑫华能环保工程股份有限公司 | The valve arrangement and storage bin of particulate matter and liquid mixture storage bin |
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| Publication number | Publication date |
|---|---|
| CN107435744B (en) | 2023-03-14 |
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