CN209164700U - High-temperature stop valve - Google Patents
High-temperature stop valve Download PDFInfo
- Publication number
- CN209164700U CN209164700U CN201821402792.5U CN201821402792U CN209164700U CN 209164700 U CN209164700 U CN 209164700U CN 201821402792 U CN201821402792 U CN 201821402792U CN 209164700 U CN209164700 U CN 209164700U
- Authority
- CN
- China
- Prior art keywords
- guide sleeve
- valve
- closing element
- main
- opening
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 230000013011 mating Effects 0.000 claims abstract description 15
- 238000013016 damping Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 230000000873 masking effect Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 18
- 230000000694 effects Effects 0.000 description 9
- 239000003566 sealing material Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 210000004894 snout Anatomy 0.000 description 5
- 241001669679 Eleotris Species 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a high temperature stop valve is equipped with the valve body, the valve body includes the valve body main part and is used for sealing the open-top's of valve body valve gap adopts the pilot valve structure, it is vice to be equipped with main seal on the main medium passageway of valve body, main seal is vice to be formed by main valve seat and main opening and closing member, leave the clearance between the lateral surface of uide bushing and the uide bushing mating surface on the valve body, be equipped with between uide bushing and the valve gap the uide bushing position circle, be equipped with a plurality of spring mounting holes that are used for installing uide bushing pressure spring on the bottom surface of uide bushing position circle, uide bushing pressure spring's upper end is stretched into spring mounting hole is in certain precompression state, the cup bottom of main opening and closing member constitutes the auxiliary valve seat, is equipped with vice opening and closing member. The utility model discloses effectively because of the inside relative expansion of uide bushing is to the hindrance of main opening and closing member action under high temperature medium to be favorable to guaranteeing the sealed of valve gap and relevant flange structure.
Description
Technical field
The utility model relates to a kind of high temperature break valves.
Background technique
The existing shut-off valve for being adapted to high-temperature medium generallys use Electrical heads (electromagnetic actuator device) driving, Electrical heads transmission
The vertical output rod of mechanism can move up and down under the drive of Electrical heads, and then the valve rod of shut-off valve is driven to move up and down,
Under industrial application occasion, shut-off valve generallys use guide's valve arrangement, setting primary seal pair and secondary sealing pair in valve body, primary seal pair
Valve seat (main valve seat) be horizontally placed in the medium channel of valve body, center through hole constitute in main medium channel it is necessary it
Place, the opening and closing element (main valve clack) of primary seal pair are located above the main valve seat in valve chamber, and it is disposed thereon that main opening and closing element is equipped with connection
The epicoele of side and the damping hole of the lumen on the outside of it, keep the sealing surface of its sealing surface and main valve seat close when main opening and closing element moves down
After touch, the main medium channel for flowing through main valve seat is cut off, and primary seal pair enters closed state, when main opening and closing element moves up disengaging for sealing-in
After main valve seat, the center through hole of main valve seat is opened, and main medium channel conducting, primary seal pair enters open state, is equipped in valve chamber
Vertical guide sleeve, covers the track that moves up and down that main opening and closing element is thus limited in the outside of main opening and closing element, secondary medium channel (or
Claim guide's medium channel) one end connection be located at main opening and closing element above epicoele, the other end be connected to valve outlet plenum, the pair
The valve seat (auxiliary-seat) of sealing pair is located at the top of main opening and closing element, and center through hole constitutes the necessary place in secondary medium channel,
The opening and closing element (secondary flap) of secondary sealing pair is connected to the lower end of valve rod, positioned at the top of auxiliary-seat, when using Electrical heads driving,
Electrical heads obtain it is electric after, by the electromagnetic action between its internal electromagnetic activity part and fixing piece (dynamic iron core and static iron core), drive
Drive shaft and valve rod overcome the active force of reset spring to move up, and then secondary opening and closing element is driven to be detached from auxiliary-seat, make secondary medium
Channel conductive, upper intracavitary medium pass through secondary medium channel and flow into outlet plenum, reduce the pressure medium above winner's opening and closing element
To the pressure medium of lumen and snout cavity, by the pressure for the lumen pressure medium and epicoele pressure medium for acting on main opening and closing element
Difference drives main opening and closing element to move up, and main opening and closing element is detached from main valve seat and main medium channel is connected, and valve is in the open state,
After Electrical heads power-off, the electromagnetic force inside Electrical heads between electromagnetic activity part and fixing piece disappears, under the action of reset spring,
Drive shaft connection valve rod moves down together, causes secondary opening and closing element and auxiliary-seat in sealing contact, cuts off secondary medium channel, passes through resistance
The medium that Buddhist nun hole flows into epicoele can not be flowed out by secondary medium channel, and epicoele pressure medium gradually rises, when being increased to certain journey
After degree, under epicoele medium and the effect of flap lateral media pressure difference, main opening and closing element moves down, cutting master in sealing contact with main valve seat
Medium channel, valve are in close state, under lasting closed state, the medium of lumen constantly pass through damping hole enter it is upper
Chamber, until upper cavity pressure and snout cavity pressures maintain an equal level, the pressure medium thereby increased inside and outside main opening and closing element is poor, ensure that
Sealing effect.The defect of existing this shut-off valve is mainly manifested in: guide sleeve is fixedly installed in valve body, lateral surface and valve body
It is very close to each other between guide sleeve mating surface on inner wall, since guide sleeve is located in valve chamber, surrounded by medium, and the appearance of valve body
It is exposed, is contacted with ambient air, therefore when being used for high-temperature medium, the temperature rise of guide sleeve and degree of thermal expansion are obvious
Temperature rise and degree of thermal expansion greater than valve body, the lateral surface of guide sleeve because by the guide sleeve mating surface constraint on valve interior wall,
It will make gap shrinks between guide sleeve and flap even inward against expansion when guide sleeve needs a greater degree of expansion
The two is set to press together, the flexibility for thus seriously hampering flap movement even can be stuck by flap, and valve is caused to be closed
Failure;In addition, due to secondary medium channel be arranged in valve deck, affect the pressure-resistant performance of valve deck, also affect valve body with
Sealing performance between valve deck.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of high temperature break valve, avoid because of the inside phase of guide sleeve
Main opening and closing element movement is interfered to expansion, the sealing performance between valve body and valve deck is improved, improves major and minor sealing pair
Sealing performance.
The technical solution of the utility model is: a kind of high temperature break valve, valve body is equipped with, on the main medium channel of the valve body
Equipped with primary seal pair, the primary seal pair is made of main valve seat and main opening and closing element (or main valve clack), and the main valve seat level is set
It sets in the valve body, center through hole constitutes a necessary place of the main medium channel, and the main opening and closing element is located at institute
The top of main valve seat is stated, is equipped with vertical guide sleeve in the valve body, the main opening and closing element is located in the guide sleeve, outside
There are the gap that is slidably matched between face and the inner wall of the guide sleeve, the valve interior wall is equipped with for matching with the guide sleeve
The guide sleeve mating surface of conjunction, there are gaps between the lateral surface of the guide sleeve and the guide sleeve mating surface.
Preferably, the lateral surface of the guide sleeve is equipped with the guide sleeve flange to extend radially outwardly out, the guide sleeve method
Orchid is located at the middle and upper part of the guide sleeve, and the outer diameter of the guide sleeve flange is greater than the guide sleeve outer diameter being positioned above and is located at
Guide sleeve outer diameter below, the valve body is interior equipped with guide sleeve supporting structure matched with the guide sleeve flange, described to lead
It is supported on the upper surface of the guide sleeve supporting structure to the lower end surface of set flange, is set on the upper surface of the guide sleeve flange
There is the guide sleeve holddown spring for the guide sleeve to be pressed downward, the lower end of the guide sleeve holddown spring is pressed in the guiding
On the upper surface for covering flange, upper end connects the guide sleeve locating ring on the valve body.
Preferably, the guide sleeve holddown spring is the helical spring pre-tightened, and quantity is multiple.
Preferably, the valve body includes valve body and the open-topped valve deck for closing the valve body, institute
The top that valve deck is fixedly mounted on the valve body is stated, guide sleeve locating ring, the guide sleeve positioning are equipped in the valve body
Between the guide sleeve and valve deck, the bottom surface of the guide sleeve locating ring is equipped with for installing guide sleeve holddown spring circle
Spring mounting hole, the quantity of the spring mounting hole be it is multiple, positioned at the surface of the guide sleeve flange, the guide sleeve
The upper end of holddown spring protrudes into the spring mounting hole and in certain pre-compressed state.
Preferably, the bottom surface of the guide sleeve locating ring is equipped with guide sleeve inserting groove, and the guide sleeve inserting groove is located at
The inside of the spring mounting hole extends in the guide sleeve inserting groove at the top of the guide sleeve, lateral surface with it is described
There are gaps between the lateral wall of guide sleeve inserting groove, between the top of the guide sleeve and the slot bottom of the guide sleeve inserting groove
There are spacing.
Preferably, the valve body uses guide's valve arrangement, and the main opening and closing element is cup-shaped, the bottom of a cup structure of the main opening and closing element
At auxiliary-seat, the main opening and closing element bottom of a cup that the bottom of a cup center of the main opening and closing element is equipped with the center through hole for constituting the auxiliary-seat is logical
Hole, secondary opening and closing element (or secondary flap) is equipped in the inner hole of the main opening and closing element, and the pair opening and closing element and the auxiliary-seat are constituted
Secondary sealing is secondary (pilot valve sealing pair), between the lateral surface of the pair opening and closing element and the inner wall sliding surface of the main opening and closing element are equipped with
Gap cooperation.
Preferably, the inner hole bottom of the main opening and closing element is equipped with extension diameter section, and the internal diameter of the extension diameter section is greater than main opening and closing element
The internal diameter of inner hole other parts.
Preferably, the lower part or bottom of the main opening and closing element are equipped with the damping hole being connected to inside and outside it, the damping hole
Outer openings be located at the position that the main opening and closing element is not covered by the guide sleeve under primary seal pair closed state, the resistance
The inside opening in Buddhist nun hole is located at the position that the main opening and closing element is not covered by the secondary opening and closing element under secondary sealing pair closed state,
The main opening and closing element is equipped with the epicoele deflector hole of connection epicoele and secondary chamber.
Preferably, the lower end of the lower end connection of the valve rod secondary opening and closing element, upper end and pull rod connects, and the pull rod is
The output shaft of the transmission mechanism, the pair opening and closing element is cup-shaped, and the lower end of the valve rod is expansion-head, the expansion-head it is outer
Shape is smooth surface of revolution, and middle part protrusion is installed on the inner hole of the pair opening and closing element in the inner hole of the secondary opening and closing element
There is plug, the plug is equipped with vertical center through hole, and the center through hole aperture of the plug is greater than the stem body part
Diameter, less than the diameter in the middle part of the expansion-head, the main part of the valve rod passes through the center through hole of the plug, described swollen
Swollen head is located between the plug and the bottom of a cup of the secondary opening and closing element.
Preferably, the reducing diameter part for being used to form main valve seat is equipped in the valve body, the reducing diameter part radially extends internally
Annular, mesoporous constitutes the center through hole of the main valve seat, and the upper surface of the reducing diameter part is provided with the ring around its mesoporous
The sealing surface of shape protrusion, the main valve seat is arranged on the annular protrusion, and the bottom of a cup upper surface of the main opening and closing element, which is provided with, encloses
Around the annular protrusion of the main opening and closing element bottom of a cup through-hole, the sealing surface of the auxiliary-seat is arranged on the annular protrusion.
The beneficial effects of the utility model are: due to the guide sleeve mating surface on the lateral surface and valve interior wall of guide sleeve
Between there are gap, the size in the gap, when so that being used for high-temperature medium, guiding can be rationally set according to actual use occasion
The expanded by heating of set by the obstruction of the guide sleeve mating surface on valve interior wall, it is inside because being limited by valve body not avoid guide sleeve
Relative expansion, since usual main opening and closing element is identical or similar as guide sleeve (and valve body) material therefor, thermal expansion coefficient is identical
Or essentially identical (have differences but the difference is in practice without materially affect), main opening and closing element and guide sleeve under high-temperature medium
Synchronous expansion, remains enough gaps between the two, thus avoids under high-temperature medium because guide sleeve is inward against expansion
Obstruction to flap movement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is I partial enlarged view corresponding with Fig. 1.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As depicted in figs. 1 and 2, high temperature break valve provided by the utility model can usually use guide's valve arrangement, can also
To use any other suitable valve mechanism, it is equipped with valve body, the main medium channel of the valve body is equipped with primary seal pair, described
Primary seal pair is made of main valve seat and main opening and closing element 10, and the main valve seat is horizontally set in the valve body, center through hole structure
At a necessary place of the main medium channel, the main opening and closing element is located at the top of the main valve seat, sets in the valve body
There is vertical guide sleeve 13, the main opening and closing element is located in the guide sleeve, between lateral surface and the inner wall of the guide sleeve
There are the gaps that is slidably matched, and thus limit and guide the main opening and closing element can move up and down along the axial direction of the guide sleeve, institute
Valve interior wall is stated equipped with the guide sleeve mating surface for cooperating with the guide sleeve, the lateral surface of the guide sleeve is led with described
To, there are gap, the degree of thermal expansion caused by the guide sleeve is because of high-temperature medium is greater than the heat of the valve body between set mating surface
When degrees of expansion, thus the guide sleeve will not be protected due to the limitation or obstruction of the guide sleeve mating surface inward against expansion
The gap under high-temperature medium between the guide sleeve and the main opening and closing element has been demonstrate,proved, and then has been avoided because the guide sleeve is with described in
The degree of thermal expansion of valve body is different and leads to main opening and closing element limitation of movement or is stuck.
In general, the lateral surface of the main opening and closing element can be cylindrical, correspondingly, the inner hole of the guide sleeve is also in cylinder
Shape, or be circular hole.
In general, the lateral surface of the guide sleeve can be equipped with the guide sleeve flange 13.2 to extend radially outwardly out, it is described to lead
It is located between the upper surface and lower end surface of the guide sleeve to set flange, the spacing preferably between the upper surface of the guide sleeve
Less than the spacing between the lower end surface of the guide sleeve, it is possible thereby to which the referred to as described guide sleeve flange is located at the guide sleeve
Middle and upper part, the outer diameter of the guide sleeve flange are greater than outside the guide sleeve outer diameter being positioned above and the guide sleeve being disposed below
Diameter is made of three sections of waney cylindrical segments it is possible thereby to be considered as the appearance profile of the guide sleeve, is located in the middle circle
Cylindrical portion corresponds to the guide sleeve flange, and the diameter of cylindrical segment below and above is less than the cylinder positioned at middle part
The diameter of section can also set the appearance profile of the guide sleeve to the ladder shaft-like of more multistage, wherein outer diameter as needed
Maximum shaft part corresponds to the guide sleeve flange, is preferably provided with guide sleeve matched with the guide sleeve flange in the valve body
Supporting structure, the upper surface of the guide sleeve supporting structure generally can be the plane of annular, can also use and the guide sleeve
The matched other arbitrary shapes in the lower end surface of flange, the lower end surface of the guide sleeve flange are supported on the guide sleeve supporting structure
Upper surface on.The upper surface of the guide sleeve flange is equipped with the guide sleeve holddown spring for the guide sleeve to be pressed downward
16, the lower end of the guide sleeve holddown spring is pressed on the upper surface of the guide sleeve flange, and upper end connects on the valve body
Guide sleeve sealing ring, can be and be directly connected to, and can also be indirectly connected with by the part being fixedly connected with the valve body, thus be limited
The position of the upper end of guide sleeve holddown spring in vertical direction, by the elastic force of the guide sleeve holddown spring, so that guiding
The guide sleeve flange is fixedly clamped by set holddown spring together with the guide sleeve supporting structure from upper and lower both direction.
The guide sleeve holddown spring can for pre-tighten helical spring, quantity be it is multiple, uniformly or with other rule sides
Formula is distributed on the same circumference.
With the center through hole hole wall of the guide sleeve supporting structure of the lateral surface clearance fit of the guide sleeve flange with
And the equal structure of valve interior wall with the lateral surface clearance fit of the guide sleeve flange above the guide sleeve supporting structure
At the guide sleeve mating surface, there are gaps appropriate between the guide sleeve lateral surface of corresponding site, by the guide sleeve
Limiting wherein and is allowing guide sleeve radially and has certain change in location or volume change.
Due to the fixed form of the guide sleeve be by the elastic force of the guide sleeve holddown spring by the guide sleeve from
Upper and lower both direction clamps, therefore the guiding is allowed to be cased with certain radial deflection, can use main opening and closing element and main valve seat
Between automatic centering effect realize the automatic centering effect between main opening and closing element and main valve seat, the position of adjust automatically guide sleeve
It is adapted to corresponding centering requirement, thus advantageously reduces processing and assembly precision requirement, and improves the close of the primary seal pair
Seal effect.
The sealing surface of the main opening and closing element can use taper or spherical seal surface, to obtain or improve automatic centering energy
Power, can also be using other suitable shapes such as planes.
The valve body includes valve body 8 and the open-topped valve deck 18 for closing the valve body, the valve
Lid can be fastened by bolts the top for waiting suitable way to be fixedly mounted on the valve body, set between the valve body
There are sealing material 26, such as gasket, to guarantee the sealing between the valve deck and valve body.
Guide sleeve locating ring 17 is preferably provided in the valve body, the guide sleeve locating ring is located at the guide sleeve and valve deck
Between, preferably in a ring, bottom surface is equipped in the spring mounting hole of installation guide sleeve holddown spring the guide sleeve locating ring,
The quantity of the spring mounting hole is usually multiple, and helical spring can be used, positioned at the surface of the guide sleeve flange, preferentially
Equidistantly distributed or other regular distribution modes are used on the same circumference, the upper end of the guide sleeve holddown spring is protruded into described
Spring mounting hole is simultaneously in certain pre-compressed state, while the guide sleeve is thus compressed downwards, upwards described in compression
Guide sleeve locating ring is pressed in the upper surface of the guide sleeve locating ring on the bottom surface of the valve deck.
Guide sleeve inserting groove is also provided on the bottom surface of the guide sleeve locating ring, the guide sleeve inserting groove is located at institute
The inside of the first annular slot of locating ring is stated, the top 13.3 of the guide sleeve extends in the guide sleeve inserting groove, outside
There are gaps between face and the lateral wall of the guide sleeve inserting groove, to avoid being radially expanded for the guide sleeve is interfered.
Preferably there are gaps 13.4 between the top of the guide sleeve and the slot bottom of the guide sleeve inserting groove, in order to logical
It crosses bolt valve deck 18 is pressed on sealing element 26, guarantees the sealing between valve deck and valve body.
The lateral surface of the guide sleeve locating ring is kept off in the sealing material between the valve deck and valve body
(tongue and groove or convex-concave knot can be usually used for the structure of the sealing material to be arranged on side, with the valve deck and valve body
Structure) sealing material is surrounded together, prevent the sealing material radial under the squeezing action of the valve deck and valve body
It is inwardly projecting, it thus not only contributes to improve sealing effect, but also be conducive to extend the service life of sealing material.
The main opening and closing element is cup-shaped, and the cavity of cupuliform can be described as the inner hole of main opening and closing element, the main opening and closing element it is outer
Side is cylindroid, is cooperated with the inner wall glade plane space of the guide sleeve, under the guidance or restriction of guide sleeve
Lower movement.
Preferably, the bottom of a cup of the main opening and closing element is used as auxiliary-seat, the bottom of a cup center of the main opening and closing element is equipped with master and opens
Closing member bottom of a cup through-hole 4, thus the main opening and closing element bottom of a cup through-hole constitutes the center through hole of the auxiliary-seat.
For the valve body using guide's valve arrangement, it is preferably provided with secondary opening and closing element 14 in the inner hole of the main opening and closing element, it is described
Secondary opening and closing element and the auxiliary-seat constitute secondary sealing pair (pilot valve sealing pair), the lateral surface of the pair opening and closing element and the master
The inner wall sliding surface of opening and closing element is equipped with clearance fit, allow the secondary opening and closing element in the inner hole of the main opening and closing element on move down
Dynamic, the cupuliform side wall of the main opening and closing element plays the role of secondary opening and closing element mobile guide as a result, can be considered leading for secondary opening and closing element
To set.
The inner hole bottom of the main opening and closing element is equipped with extension diameter section 12, and internal diameter is greater than the internal diameter of other parts, and the pair opens
Space between the bottom of closing member and the inner wall of the main opening and closing element constitutes secondary chamber, passes through the setting and holding of the extension diameter section, shape
Still there is certain volume at the pair chamber described under secondary sealing pair closed state.
Equipped with the reducing diameter part for being used to form main valve seat in the valve body, the annular that the reducing diameter part radially extends internally,
Its mesoporous constitutes the center through hole of the main valve seat.
Preferably, the upper surface of the reducing diameter part is provided with the annular protrusion 9 around its mesoporous, institute by modes such as built-up welding
The sealing surface for stating main valve seat is arranged on the annular protrusion, can be processed on the annular protrusion of built-up welding by machining mode
Required sealing surface.When the primary seal pair is closed, the bottom of the main opening and closing element is pressed in the protrusion of the annular built-up welding, institute
The sealing surface for stating main opening and closing element is sealed against each other with the sealing surface of the main valve seat to be contacted, and the center through hole of main valve seat is passed through in cutting
Medium channel.
Actually region in sealing contact is preferably placed at the master and opens with the sealing surface of the main valve seat on the main opening and closing element
The inside of the bottom surface outer rim of closing member, so that the area that the bottom surface of the main opening and closing element is surrounded beyond the secondary practical sealing contact surface of primary seal
Domain, and then the pressure medium of surrounding acts on the bottom surface beyond part.
The bottom of a cup upper surface of the main opening and closing element is provided with by modes such as built-up welding around the main opening and closing element bottom of a cup through-hole
Annular protrusion 11, the sealing surface of the auxiliary-seat is arranged on the annular protrusion, can be by machining mode in built-up welding
Required sealing surface is processed on annular protrusion.When the secondary sealing pair is closed, the bottom of the pair opening and closing element is pressed in the ring
In the protrusion of shape built-up welding, the sealing surface of the pair opening and closing element is sealed against each other with the sealing surface of the auxiliary-seat to be contacted, and cutting is passed through
The medium channel of main valve seat bottom of a cup through-hole.
Actually region in sealing contact is preferably placed at the pair and opens with the sealing surface of the auxiliary-seat on the pair opening and closing element
The inside of the bottom surface outer rim of closing member, so that the area that the bottom surface of the pair opening and closing element is surrounded beyond the secondary practical sealing contact surface of secondary sealing
Domain, and then the pressure medium of surrounding acts on the bottom surface beyond part.
The lower part or bottom of the main opening and closing element are equipped with the damping hole 3 being connected to inside and outside it, the outside of the damping hole
Opening is located at the position that the main opening and closing element is not covered by the guide sleeve under primary seal pair closed state, is preferably placed at described
The bottom section of the lateral surface of main opening and closing element, the inside opening of the damping hole are located at the main opening and closing element and close in secondary sealing pair
The position that do not covered by the secondary opening and closing element under state, the side wall of the extension diameter section of the inner hole of the preferably described main opening and closing element.Exist as a result,
In the state that the primary seal pair and secondary sealing pair are turned off, the medium in the lumen of the guide sleeve can pass through damping
Hole enters secondary chamber, the pore size of the damping hole should be suitable for effective damping effect is capable of forming to the medium flowed through so that
The pressure medium for obtaining the epicoele after secondary sealing pair is opened can be substantially reduced, and then make main opening and closing element in lumen and epicoele medium
It being moved up under the action of pressure difference, should also be avoided and damp excessive and cause flow velocity excessively slow, influence reaches the stable time,
The damping hole data such as the aperture of optimization can be obtained by hydrodynamics method or experiment.
The main opening and closing element is equipped with the epicoele deflector hole 1 of connection epicoele 25 and secondary chamber 12, and the epicoele deflector hole is preferred
Vertical through holes on the side wall of the main opening and closing element are set, and the upper end is opened on the top of the main opening and closing element, lower ending opening
In the roof of the extension diameter section of the inner hole of the main opening and closing element, so that remaining basic non-resistance between epicoele and secondary chamber
The connection of (resistance for being significantly less than damping hole), the medium for flowing into secondary chamber through damping hole can swimmingly be flowed by epicoele deflector hole
Enter epicoele, is rapidly reached epicoele pressure medium and secondary chamber pressure medium unanimously, after secondary valve sealing pair is opened, upper intracavitary Jie
Matter can smoothly flow therein secondary chamber by epicoele deflector hole, and then flow into cavity of resorption and outlet plenum by the center through hole of auxiliary-seat.
The wall thickness of the main opening and closing element should ensure that in the expansion segment that epicoele deflector hole can be provided and inner hole is provided
Meanwhile there is required intensity.
The lower end connection secondary opening and closing element of the valve rod, upper end are used to connect the output of driving device, for example, can on
The pull rod 24 of lower movement, it is possible thereby to be moved up and down by pull rod band ovable valve stem.The driving device usually may include former dynamic
Machine and corresponding transmission mechanism, output shaft (output rod) of the pull rod as the transmission mechanism, pass through the biography of transmission mechanism
Movement is moved up and down with the output drive by described prime mover, and the pull rod drives the valve rod to move up and down, the valve rod band
It moves the secondary opening and closing element to move up and down, then realizes the opening and closing of the secondary valve sealing pair.
The valve deck is equipped with valve rod hole, for across the valve rod and/or the pull rod.
The valve rod and the pull rod can be using being fixedly and coaxially connected, thus during the work time can be by pull rod and valve
Bar is considered as a component, can be connected through a screw thread mode or any other suitable way realizes this connection, by the valve rod
Upper end be screwed onto the pull rod upper opening in the axial screw hole of pull rod, and connect anti-loosening fastening nut in screw hole outward turning, that is, realize
Described be fixedly connected, and be easy for installation and removal.
The pair opening and closing element is preferably cup-shaped, and the cavity of cupuliform can be described as the inner hole of secondary opening and closing element, under the valve rod
End is expansion-head, and the shape of the expansion-head is smooth surface of revolution, middle part protrusion, positioned at the inner hole of the secondary opening and closing element
In, installation (being typically screwed on) has plug on the inner hole of the pair opening and closing element, and the plug is equipped with vertical center through hole, institute
The center through hole aperture for stating plug is greater than the diameter of the stem body part, described less than the diameter in the middle part of the expansion-head
The main part of valve rod passes through the center through hole of the plug, and the expansion-head is located at the cup of the plug and the secondary opening and closing element
Between bottom, so that the expansion-head of valve rod cannot deviate from from the secondary opening and closing element, and then valve rod is made to be able to drive secondary opening and closing
Part moves up and down together.
The indent for matching with the expansion-head of the valve rod is equipped at the lower port of the center through hole of the plug to match
Conjunction face, the radius of curvature of the indent mating surface are preferably greater than the radius of curvature on the top of the expansion-head, pass through the expansion
Head cooperates with the corresponding surface of the indent mating surface, allow the valve rod relative to the secondary opening and closing element have it is certain not coaxially
Thus degree, inclination or radial deflection considerably reduce the associated drives and driving member of driving device, phase on valve rod and valve deck
The processing and assembly precision requirement for answering mounting structure can still guarantee valve rod and pair there are when certain deviation in movement
Normal transmission between opening and closing element.
The axial movement surplus of the expansion-head of valve rod axial direction of the expansion-head in the secondary opening and closing element in other words
Gap should be suitable for, in the case where allowing expansion-head to relatively rotate and deflection, excessive gap being avoided to cause in commutation process
The inner hole bottom of driving error, the pair opening and closing element can be equipped with resilient sleeper-bearing, after resilient sleeper-bearing is arranged, the expansion of the valve rod
Head is in contact with the resilient sleeper-bearing, can avoid valve rod stuck by plug in a big way using the elasticity of resilient sleeper-bearing,
It advantageously reduces assembly and corresponding requirement on machining accuracy and is easy to use.
The utility model can be driven by suitable driving device, the driving device usually may include prime mover and
Its transmission mechanism, the movement output mode of the output rod of transmission mechanism should be the upper end for moving up and down, and connecting valve rod, thus
Band ovable valve stem moves up and down, and described prime mover can use motor, fluid pressure drive device or electromagnetic actuator device (abbreviation electromagnetism
Head).Fig. 1 gives a kind of embodiment using Electrical heads 20, and the Electrical heads are equipped with the control cabinet 21 for controlling its work, described
The electricity output of control cabinet accesses the coil input end of the Electrical heads by modes such as cables 22, and the control cabinet can be independence
, it is also possible to and the Electrical heads one, the control cabinet, the control circuit of control cabinet and its electricity input and the electricity
Connection type between the coil of magnetic head etc. can use the prior art, and the output shaft (output rod) 19 of the Electrical heads passes through
The output (pull rod 24) of transmission mechanism 23 connects the valve rod 15 of the valve body, and thus band ovable valve stem moves up and down.
It is interconnected and is integrated if the utility model is divided into stem portion to the intracorporal cavity of valve for the convenience in statement
Each section between usually not stringent boundary, snout cavity 7 is the cavity positioned at valve body import side, and outlet plenum 5, which refers to, to be located at
The cavity of valve outlet side, cavity of resorption 6 refer to being directly communicated as one with the outlet plenum below the primary seal seat
Cavity, lumen 2 refer to that the cavity being communicated as one with the snout cavity positioned at the secondary top of the primary seal, epicoele 25 refer to position
Cavity above the flap, alleged pair chamber refer to the main opening and closing element inner chamber body being located at below secondary opening and closing element, the snout cavity,
Lumen, cavity of resorption and outlet plenum, which are interconnected, forms the main medium channel of valve, and the center through hole of main valve seat is located at lumen and cavity of resorption
Between, the only way which must be passed for entering cavity of resorption by lumen is constituted, after the closing of main valve seat center through hole, that is, main medium channel can be cut off,
The damping hole, secondary chamber constitute the secondary medium channel for being connected to lumen and main valve seat center through hole, institute with main opening and closing element bottom of a cup through-hole
It states epicoele and the secondary chamber is connected to by epicoele deflector hole, the center through hole of the auxiliary-seat, which is constituted, enters main valve seat center by secondary chamber
The only way which must be passed of through-hole, after the center through hole of auxiliary-seat is closed, i.e., cut-off secondary medium channel.
The utility model has following features:
1) it is equipped with gap between guide sleeve and valve body, guide sleeve can be guaranteed because of free extension of expanding with heat and contract with cold in valve body
Main opening and closing element moves freely in guide sleeve.
2) it is equipped with inside fic circle, does not influence the positioning accuracy of associated seal inner ring when guide sleeve is because expanding with heat and contract with cold, really
The positioning of secrecy sealing inner ring is reliable.And set up by inside fic circle, it effectively prevents particle and enters between guide sleeve and valve body
Come in gap, guarantees guide sleeve in valve body because of free extension of expanding with heat and contract with cold.
3) Direct Action Type on-off structure is used, makes shut-off valve that there is zero pressure difference open function, driving device can pass through valve rod handle
Opening and closing element, which mentions, to be opened, and valve can be opened under zero pressure difference.And the sealing performance and compressive resistance of valve deck and related flange are improved,
Deflector hole is located on main opening and closing element, does not have deflector hole in valve deck, to improve the sealing performance of valve deck and related flange and resistance to
Compressive Strength.
4) secondary opening and closing element and the special construction of related seals pair, secondary opening and closing element and corresponding sealing surface of seat are plane, are changed
Processing technology has been apt to it, it is ensured that the leakproofness of secondary sealing pair.And the outer circle of secondary opening and closing element and the inner hole of main opening and closing element can be realized
Precision-fit improves the positioning accuracy of secondary opening and closing element, ensure that secondary sealing secondary sealing.
5) special construction on valve rod head, the head of valve rod are arranged to expansion-head, can usually use spherical shape, guarantee
Cooperation flexibility between secondary opening and closing element and valve rod, it is ensured that secondary opening and closing element precisely moves in main opening and closing element, ensure that secondary close
Seal secondary leakproofness.
6) it is adapted to drive using Electrical heads, it is easy to control, the design of control cabinet can be carried out according to the prior art, improved
The function of driving head, such as power saving function, low-temperature-rise function, big suction function.
The utility model is alleged to refer to that internal diameter becomes smaller or internal diameter degrees of expansion is less than under free state and answers inward against expansion
There is the expansion fashion of degrees of expansion.
It is disclosed by the utility model it is each preferably with optional technological means, unless otherwise indicated and a preferred or optional skill
Art means are that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (10)
1. a kind of high temperature break valve, it is characterised in that be equipped with valve body, the main medium channel of the valve body is equipped with primary seal pair, institute
It states primary seal pair to be made of main valve seat and main opening and closing element, the main valve seat is horizontally set in the valve body, center through hole structure
At a necessary place of the main medium channel, the main opening and closing element is located at the top of the main valve seat, sets in the valve body
There is vertical guide sleeve, the main opening and closing element is located in the guide sleeve, stays between lateral surface and the inner wall of the guide sleeve
Be slidably matched gap, and the valve interior wall is equipped with the guide sleeve mating surface for cooperating with the guide sleeve, the guiding
There are gaps between the lateral surface of set and the guide sleeve mating surface.
2. shut-off valve as described in claim 1, it is characterised in that the lateral surface of the guide sleeve is equipped with and extends radially outwardly out
Guide sleeve flange, the guide sleeve flange is located at the middle and upper part of the guide sleeve, and the outer diameter of the guide sleeve flange is greater than position
Square guide sleeve outer diameter and the guide sleeve outer diameter being disposed below thereon, interior be equipped with of the valve body are matched with the guide sleeve flange
The guide sleeve supporting structure of set, the lower end surface of the guide sleeve flange are supported on the upper surface of the guide sleeve supporting structure,
The upper surface of the guide sleeve flange is equipped with the guide sleeve holddown spring for the guide sleeve to be pressed downward, the guide sleeve
The lower end of holddown spring is pressed on the upper surface of the guide sleeve flange, and upper end connects the guide sleeve locating ring on the valve body.
3. shut-off valve as claimed in claim 2, it is characterised in that the guide sleeve holddown spring is the helical spring pre-tightened, number
Amount is multiple.
4. shut-off valve as claimed in claim 3, it is characterised in that the valve body includes valve body and for closing the valve
The open-topped valve deck of phosphor bodies, the valve deck are fixedly mounted on the top of the valve body, are equipped with and lead in the valve body
To set locating ring, the guide sleeve locating ring is between the guide sleeve and valve deck, on the bottom surface of the guide sleeve locating ring
Equipped with the spring mounting hole for installing guide sleeve holddown spring, the quantity of the spring mounting hole be it is multiple, led positioned at described
To the surface of set flange, the upper end of the guide sleeve holddown spring protrudes into the spring mounting hole and in certain precommpression
State.
5. shut-off valve as claimed in claim 4, it is characterised in that the bottom surface of the guide sleeve locating ring is equipped with guiding inserting
Access slot, the guide sleeve inserting groove are located at the inside of the spring mounting hole, extend to the guiding at the top of the guide sleeve
Cover in inserting groove, there are gap between lateral surface and the lateral wall of the guide sleeve inserting groove, the top of the guide sleeve with
There are spacing between the slot bottom of the guide sleeve inserting groove.
6. shut-off valve a method as claimed in any one of claims 1 to 5, it is characterised in that the valve body uses guide's valve arrangement, and the master opens
Closing member is cup-shaped, and the bottom of a cup of the main opening and closing element constitutes auxiliary-seat, and the bottom of a cup center of the main opening and closing element, which is equipped with, constitutes the pair
The main opening and closing element bottom of a cup through-hole of the center through hole of valve seat is equipped with secondary opening and closing element, the secondary opening and closing in the inner hole of the main opening and closing element
Part and the auxiliary-seat constitute secondary sealing pair, and the inner wall sliding surface of the lateral surface and the main opening and closing element of the pair opening and closing element is set
There is clearance fit.
7. shut-off valve as claimed in claim 6, it is characterised in that the inner hole bottom of the main opening and closing element is equipped with extension diameter section, described
The internal diameter of extension diameter section is greater than the internal diameter of main opening and closing element inner hole other parts.
8. shut-off valve as claimed in claim 7, it is characterised in that the lower part or bottom of the main opening and closing element, which are equipped with, to be connected in it
The damping hole of outer two sides, the outer openings of the damping hole are located at the main opening and closing element under primary seal pair closed state not by institute
The position of guide sleeve masking is stated, the inside opening of the damping hole is located at the main opening and closing element under secondary sealing pair closed state not
The position covered by the secondary opening and closing element, the main opening and closing element are equipped with the epicoele deflector hole of connection epicoele and secondary chamber.
9. shut-off valve as claimed in claim 8, it is characterised in that the lower end connection of the valve rod secondary opening and closing element, upper end and pull rod
Lower end connection, the pull rod is the output shaft of transmission mechanism, and the pair opening and closing element is cup-shaped, and the lower end of the valve rod is expansion
Head, the shape of the expansion-head are smooth surface of revolution, and middle part is raised, in the inner hole of the secondary opening and closing element, the pair
Plug is installed, the plug is equipped with vertical center through hole, and the center through hole aperture of the plug is greater than on the inner hole of opening and closing element
The diameter of the stem body part, less than the diameter in the middle part of the expansion-head, the main part of the valve rod passes through described stifled
The center through hole of head, the expansion-head are located between the plug and the bottom of a cup of the secondary opening and closing element.
10. shut-off valve as claimed in claim 9, it is characterised in that be equipped with the undergauge for being used to form main valve seat in the valve body
Portion, the annular that the reducing diameter part radially extends internally, mesoporous constitute the center through hole of the main valve seat, the reducing diameter part
Upper surface is provided with the annular protrusion around its mesoporous, and the sealing surface of the main valve seat is arranged on the annular protrusion, the master
The bottom of a cup upper surface of opening and closing element is provided with the annular protrusion around the main opening and closing element bottom of a cup through-hole, the sealing surface of the auxiliary-seat
It is arranged on the annular protrusion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821402792.5U CN209164700U (en) | 2018-08-29 | 2018-08-29 | High-temperature stop valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821402792.5U CN209164700U (en) | 2018-08-29 | 2018-08-29 | High-temperature stop valve |
Publications (1)
Publication Number | Publication Date |
---|---|
CN209164700U true CN209164700U (en) | 2019-07-26 |
Family
ID=67330325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201821402792.5U Expired - Fee Related CN209164700U (en) | 2018-08-29 | 2018-08-29 | High-temperature stop valve |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN209164700U (en) |
-
2018
- 2018-08-29 CN CN201821402792.5U patent/CN209164700U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204961843U (en) | Wash solenoid valve and reverse osmosis water purification machine | |
KR101401086B1 (en) | Prefabricated high-pressure flow control valve | |
CN108980443B (en) | High-temperature electromagnetic drive stop valve | |
KR102516818B1 (en) | electronic expansion valve | |
CN204083445U (en) | Large discharge direct-acting type often drives solenoid valve used for air compressor | |
CN209164700U (en) | High-temperature stop valve | |
CN203431210U (en) | Bidirectional balancing type stop valve | |
CN203442214U (en) | Energy-saving gas inlet valve | |
CN104879541A (en) | Proportioning valve | |
CN210318742U (en) | Zero-pressure-difference normally open electromagnetic valve | |
CN210240589U (en) | Movable flange electric regulating valve | |
CN207584128U (en) | The low floating type regulating valve of slip | |
CN211423487U (en) | Precision pressure regulating valve | |
CN220646810U (en) | Sealing structure for flow control valve | |
CN218511825U (en) | Gas cutting device and gas meter | |
CN219432591U (en) | Adjusting valve rod for pneumatic adjusting valve | |
CN220185839U (en) | Pneumatic control valve | |
CN219975359U (en) | Opening limiting device and opening limiting diaphragm valve | |
KR102043223B1 (en) | Refrigerant-blocking valve assembled & disassembled by element | |
CN210153241U (en) | Control valve | |
CN217056528U (en) | Jet valve armature guide structure | |
CN210164898U (en) | Stop valve for high-pressure regulation by using bevel gear | |
CN210106638U (en) | Electric assembled water heating regulating valve | |
CN213929557U (en) | Valve seat for gas delivery | |
CN216590139U (en) | Novel internal feedback control valve rear pressure regulating valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 Termination date: 20200829 |
|
CF01 | Termination of patent right due to non-payment of annual fee |