CN108980443B - High-temperature electromagnetic drive stop valve - Google Patents
High-temperature electromagnetic drive stop valve Download PDFInfo
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- CN108980443B CN108980443B CN201810995357.6A CN201810995357A CN108980443B CN 108980443 B CN108980443 B CN 108980443B CN 201810995357 A CN201810995357 A CN 201810995357A CN 108980443 B CN108980443 B CN 108980443B
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- valve
- closing element
- main
- opening
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- 238000007789 sealing Methods 0.000 claims abstract description 62
- 238000013016 damping Methods 0.000 claims description 18
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- 230000005611 electricity Effects 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
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- 230000006835 compression Effects 0.000 abstract 3
- 238000007906 compression Methods 0.000 abstract 3
- 210000003128 head Anatomy 0.000 description 26
- 230000000694 effects Effects 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 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
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- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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Classifications
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a high-temperature electromagnetic drive stop valve, which comprises an electromagnetic head and a valve body, wherein the valve body comprises a valve body main body and a valve cover for sealing a top opening of the valve body main body, a pilot valve structure is adopted, a main sealing pair is arranged on a main medium channel of the valve body, the main sealing pair consists of a main valve seat and a main opening and closing part, a gap is reserved between the outer side surface of a guide sleeve and a guide sleeve matching surface on the valve body, a guide sleeve positioning ring is arranged between the guide sleeve and the valve cover, a plurality of spring mounting holes for mounting guide sleeve compression springs are arranged on the bottom surface of the guide sleeve positioning ring, the upper ends of the guide sleeve compression springs extend into the spring mounting holes and are in a certain pre-compression state, an auxiliary valve seat is formed at the bottom of the main opening and closing part, and an auxiliary opening and closing part is. The invention effectively hinders the action of the main opening and closing piece due to inward relative expansion of the guide sleeve under high-temperature medium, and is beneficial to ensuring the sealing of the valve cover and the related flange structure.
Description
Technical field
The present invention relates to a kind of high-temperature electromagnetics to drive shut-off valve.
Background technique
The existing electromagnetic drive shut-off valve for being adapted to high-temperature medium includes Electrical heads (electromagnetic actuator device) and valve body,
Electrical heads work under the control cabinet control for being equipped with control circuit, are broadly divided into coil and are powered or power off two states, to Mr. Yu
A little control circuits can also have a variety of different electricity output states, different voltage be exported, so that the energization shape of Electrical heads
There are many energized states under different voltages for state, for example, control circuit exports high voltage on startup, to overcome because of sound
Between iron core spacing greatly caused by electromagnetic attraction it is small, to obtain sufficiently large electromagnetic driving force, and/or when to overcome unlatching compared with
Big resistance and improve electromagnetic driving force, and sound iron core be mutually attracted after maintain stable state when, then export lesser voltage,
To avoid unnecessary power consumption and it is conducive to reduce coil temperature rise, the drive shaft of Electrical heads connects valve rod by driving mechanism,
Valve body generallys use guide's valve arrangement, setting primary seal pair and secondary sealing pair in valve body, the valve seat (main valve of primary seal pair
Seat) it is horizontally placed in the medium channel of valve body, center through hole constitutes the necessary place in main medium channel, primary seal pair
Opening and closing element (main valve clack) is located above the main valve seat in valve chamber, and main opening and closing element is equipped with the epicoele and be located at that connection is positioned above
The damping hole of lumen on the outside of it, when main opening and closing element move down make its sealing surface and main valve seat sealing surface it is in sealing contact after, flow through
The main medium channel of main valve seat is cut off, and primary seal pair enters closed state, after main opening and closing element, which moves up, is detached from main valve seat, main valve
The center through hole of seat is opened, and main medium channel conducting, primary seal pair enters open state, is equipped with vertical guide sleeve in valve chamber,
Cover 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 guide's medium is logical
Road) one end connection be located at main opening and closing element above epicoele, the other end be connected to valve outlet plenum, the valve seat of the secondary sealing pair
(auxiliary-seat) is located at the top of main opening and closing element, and center through hole constitutes the necessary place in secondary medium channel, and secondary sealing is secondary to be opened
Closing member (secondary flap) is connected to the lower end of valve rod, positioned at the top of auxiliary-seat, Electrical heads obtain it is electric after, by its internal electromagnetic activity
Electromagnetic action between part and fixing piece (dynamic iron core and static iron core) drives drive shaft and valve rod to overcome the active force of reset spring
It moves up, and then secondary opening and closing element is driven to be detached from auxiliary-seat, secondary medium channel is connected, it is logical that upper intracavitary medium passes through secondary medium
Road flows into outlet plenum, so that the pressure medium above winner's opening and closing element is reduced to the pressure medium of lumen and snout cavity, by effect
Main opening and closing element is driven to move up in the lumen pressure medium of main opening and closing element and the pressure difference of epicoele pressure medium, main opening and closing element is de-
Be connected main medium channel from main valve seat, valve is in the open state, after Electrical heads power-off, electromagnetic activity part inside Electrical heads
Electromagnetic force between fixing piece disappears, and under the action of reset spring, drive shaft connection valve rod moves down together, causes pair
Opening and closing element is in sealing contact with auxiliary-seat, cuts off secondary medium channel, can not pass through secondary medium by the medium that damping hole flows into epicoele
Channel outflow, epicoele pressure medium gradually rise, after increasing to a certain extent, in epicoele medium and flap lateral media pressure
Under difference effect, main opening and closing element moves down in sealing contact with main valve seat, cuts off main medium channel, and valve is in close state, and is continuing
Closed state under, the medium of lumen constantly passes through damping hole and enters epicoele, until upper cavity pressure and snout cavity pressures maintain an equal level, by
The pressure medium that this is increased inside and outside main opening and closing element is poor, ensure that sealing effect.The defect of existing this shut-off valve is main
Show: guide sleeve is fixedly installed in valve body, very close to each other between the guide sleeve mating surface on lateral surface and valve interior wall,
Since guide sleeve is located in valve chamber, surrounded by medium, and the appearance of valve body is exposed, and contacts with ambient air, therefore
When being used for high-temperature medium, the temperature rise of guide sleeve and degree of thermal expansion are significantly greater than temperature rise and the degree of thermal expansion of valve body, guiding
The lateral surface of set, will when guide sleeve needs a greater degree of expansion because being constrained by the guide sleeve mating surface on valve interior wall
Inward against expansion, makes the gap shrinks between guide sleeve and flap that the two even be made to press together, thus seriously hamper
The flexibility of flap movement even can be stuck by flap, and valve is caused to close failure；In addition, since secondary medium channel is arranged in valve
Gai Zhong affects the pressure-resistant performance of valve deck, also affects the sealing performance between valve body and valve deck.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of high-temperature electromagnetic drive shut-off valve, avoid because guide sleeve to
Interior relative expansion interferes main opening and closing element movement, improves the sealing performance between valve body and valve deck, improves major and minor sealing
Secondary sealing performance.
The technical scheme is that a kind of high-temperature electromagnetic drives shut-off valve, including Electrical heads and valve body, the electricity
Magnetic head is equipped with the control cabinet for controlling its work, and the electricity output of the control cabinet accesses the coil input end of the Electrical heads, described
The output shaft of Electrical heads connects the valve rod of the valve body by transmission mechanism, and the valve body is equipped with valve body, the valve
The main medium channel of body is equipped with primary seal pair, and the primary seal pair is made of main valve seat and main opening and closing element (or main valve clack),
The main valve seat is horizontally set in the valve body, and center through hole constitutes a necessary place of the main medium channel, institute
The top that main opening and closing element is located at the main valve seat is stated, is equipped with vertical guide sleeve in the valve body, the main opening and closing element is located at institute
It states in guide sleeve, there are the gap that is slidably matched between lateral surface and the inner wall of the guide sleeve, the valve interior wall is equipped with
Guide sleeve mating surface for cooperating with the guide sleeve is stayed between the lateral surface of the guide sleeve and the guide sleeve mating surface
There is gap.
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 present invention are: due between the guide sleeve mating surface on the lateral surface and valve interior wall of guide sleeve
There are gaps, and the size in the gap, when so that being used for high-temperature medium, guide sleeve can rationally be arranged according to actual use occasion
Expanded by heating not by the obstruction of the guide sleeve mating surface on valve interior wall, avoid guide sleeve due to being limited by valve body inward against
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 base
This identical (have differences but the difference is in practice without materially affect), main opening and closing element is synchronous with guide sleeve under high-temperature medium
Expansion, remain enough gaps between the two, thus avoid under high-temperature medium because guide sleeve inward against expansion to valve
The obstruction of valve movement.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is I partial enlarged view corresponding with Fig. 1.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As depicted in figs. 1 and 2, high-temperature electromagnetic driving shut-off valve provided by the invention includes Electrical heads (electromagnetic actuator device)
20 and valve body, the Electrical heads are equipped with the control cabinet 21 for controlling its work, and the electricity output of the control cabinet passes through cable 22
Etc. modes access the coil input ends of the Electrical heads, the control cabinet can be independent, be also possible to and the Electrical heads
One, the control cabinet, the control circuit of control cabinet and its electricity input the connection side between the coil of the Electrical heads
Formula etc. can use the prior art, and the output shaft (output rod) 19 of the Electrical heads connects the valve by transmission mechanism 23
The valve rod 15 of ontology, by the drive connection between the valve rod, band ovable valve stem is synchronized with it to be moved up and down, the valve sheet
Body can usually use guide's valve arrangement, can also use any other suitable valve mechanism.
The valve body is equipped with valve body, and the main medium channel of the valve body is equipped with primary seal pair, the primary seal pair
It is made of main valve seat and main opening and closing element 10, the main valve seat is horizontally set in the valve body, and center through hole constitutes the master
One necessary place of medium channel, the main opening and closing element are located at the top of the main valve seat, are equipped with vertically in the valve body
Guide sleeve 13, the main opening and closing element are located in the guide sleeve, and there are slidings between lateral surface and the inner wall of the guide sleeve
Thus fit clearance limits and guides the main opening and closing element can move up and down along the axial direction of the guide sleeve, in the valve body
Wall is equipped with the guide sleeve mating surface for cooperating with the guide sleeve, and the lateral surface of the guide sleeve and the guide sleeve cooperate
There are gap between face, the degree of thermal expansion caused by the guide sleeve is because of high-temperature medium is greater than the degree of thermal expansion of the valve body
When, the guide sleeve will not thereby ensure that high temperature due to the limitation or obstruction of the guide sleeve mating surface inward against expansion
Gap under medium between the guide sleeve and the main opening and closing element, and then avoid the heat because of the guide sleeve and the valve body
Degrees of expansion 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 locating 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 with the spring for installing guide sleeve holddown spring and installs the guide sleeve locating ring
The quantity in hole, the spring mounting hole is usually multiple, and helical spring can be used, positioned at the surface of the guide sleeve flange,
Preferential equidistantly distributed on the same circumference uses other regular distribution modes, and the upper end of the guide sleeve holddown spring is protruded into
The spring mounting hole is simultaneously in certain pre-compressed state, while the guide sleeve is thus compressed downwards, compresses upwards
The guide sleeve locating ring is pressed in the upper surface of the guide sleeve locating ring on the bottom surface of the valve deck.
The guide sleeve inserting groove of annular, the guide sleeve inserting groove are also provided on the bottom surface of the guide sleeve locating ring
Positioned at the inside of the spring mounting hole, the top 13.3 of the guide sleeve is extended 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 of the valve rod secondary opening and closing element, upper end is connect with the lower end of pull rod 24, it is possible thereby to pass through drawing
Bar band ovable valve stem moves up and down.Output shaft (output rod) of the pull rod as the transmission mechanism, passes through the biography of transmission mechanism
Movement is moved up and down with the output shaft drive by the Electrical heads, and the pull rod drives the valve rod to move up and down, the valve rod
It drives the secondary opening and closing element to move up and down, then realizes the opening and closing of the secondary valve sealing pair.
The Electrical heads and transmission mechanism can use the prior art of any suitable, and the valve deck is equipped with valve rod hole,
For passing through 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
Degree, inclination or radial deflection, thus considerably reduce corresponding mounting structure on Electrical heads, transmission mechanism, valve rod and valve deck
Processing and assembly precision requirement, there are when certain deviation, can still guarantee between valve rod and secondary opening and closing element in movement
Normal transmission.
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 transmission mechanism can use the prior art of any suitable, and output shaft (pull rod) should be with the dynamic iron of Electrical heads
Core moves up and down, and then moves up and down with ovable valve stem and secondary opening and closing element.
For the convenience in statement, if the present invention is divided into stem portion to the intracorporal cavity of valve, being interconnected, it is each to be integrated
Usually not stringent boundary between part, snout cavity 7 are the cavitys positioned at valve body import side, and outlet plenum 5 refers to positioned at valve body
The cavity of outlet side, cavity of resorption 6 refer to the cavity being directly communicated as one with the outlet plenum below the primary seal seat,
Lumen 2 refers 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 positioned at institute
State the cavity above flap, alleged pair chamber refers to the main opening and closing element inner chamber body being located at below secondary opening and closing element, the snout cavity, in
Chamber, cavity of resorption and outlet plenum, which are interconnected, forms the main medium channel of valve, the center through hole of main valve seat be located at lumen and cavity of resorption it
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, institute can be cut off
State damping hole, secondary chamber constitutes the secondary medium channel for being connected to lumen and main valve seat center through hole with main opening and closing element bottom of a cup through-hole, described
Epicoele is connected to the secondary chamber by epicoele deflector hole, and the center through hole composition of the auxiliary-seat enters main valve seat center by secondary chamber and leads to
The only way which must be passed in hole, after the center through hole of auxiliary-seat is closed, i.e., cut-off secondary medium channel.
The present invention 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) Electrical heads drive, easy to control, and the design of control cabinet can be carried out according to the prior art, improves driving head
Function, such as power saving function, low-temperature-rise function, big suction function.
Electrical heads and/or transmission mechanism of the invention can also can be such that its output rod (draws with equivalence replacement to be any other
Bar) transmission mechanism of driving device and driving device that moves up and down.
Refer to that internal diameter becomes smaller or internal diameter degrees of expansion is less than Ying Youkuo under free state inward against expansion alleged by of the invention
The expansion fashion of Zhang Chengdu.
It is disclosed by the invention it is each preferably with optional technological means, unless otherwise indicated and one preferably or can selecting technology hand
Section is that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (9)
1. a kind of high-temperature electromagnetic drives shut-off valve, including Electrical heads and valve body, the Electrical heads, which are equipped with, controls its work
Control cabinet, the electricity output of the control cabinet access the coil input end of the Electrical heads, and the output shaft of the Electrical heads passes through biography
Motivation structure connects the valve rod of the valve body, it is characterised in that the valve body is equipped with valve body, the main medium of the valve body
Channel is equipped with primary seal pair, and the primary seal pair is made of main valve seat and main opening and closing element, and the main valve seat is horizontally set on institute
It states in valve body, center through hole constitutes a necessary place of the main medium channel, and the main opening and closing element is located at the main valve
The top of seat, the valve body is interior to be equipped with vertical guide sleeve, and the main opening and closing element is located in the guide sleeve, lateral surface and institute
It states there are the gap that is slidably matched between the inner wall of guide sleeve, the valve interior wall is equipped with for leading with what the guide sleeve cooperated
To set mating surface, there are gap, the outsides of the guide sleeve between the lateral surface of the guide sleeve and the guide sleeve mating surface
Face is equipped with the guide sleeve flange to extend radially outwardly out, and the guide sleeve flange is located at the middle and upper part of the guide sleeve, described to lead
It is greater than the guide sleeve outer diameter being positioned above and the guide sleeve outer diameter being disposed below to the outer diameter of set flange, is set in the valve body
There is guide sleeve supporting structure matched with the guide sleeve flange, the lower end surface of the guide sleeve flange is supported on the guide sleeve
On the upper surface of supporting structure, the upper surface of the guide sleeve flange is equipped with the guide sleeve for the guide sleeve to be pressed downward
Holddown spring, the lower end of the guide sleeve holddown spring are pressed on the upper surface of the guide sleeve flange, and upper end connects the valve
Guide sleeve locating ring on body.
2. shut-off valve as described in claim 1, it is characterised in that the guide sleeve holddown spring is the helical spring pre-tightened, number
Amount is multiple.
3. shut-off valve as claimed in claim 2, 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.
4. shut-off valve as claimed in claim 3, 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.
5. the shut-off valve as described in claim 1-4 is any, 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.
6. shut-off valve as claimed in claim 5, 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.
7. shut-off valve as claimed in claim 6, 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.
8. shut-off valve as claimed in claim 7, it is characterised in that the lower end of the valve rod connection secondary opening and closing element, upper end with
The lower end of pull rod connects, and the pull rod is the output shaft of the transmission mechanism, and the pair opening and closing element is cup-shaped, 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, plug is installed on the inner hole of the pair opening and closing element, the plug is equipped with vertical center through hole, the center through hole of the plug
Aperture is greater than the diameter of the stem body part, and less than the diameter in the middle part of the expansion-head, the main part of the valve rod is worn
The center through hole of the plug is crossed, the expansion-head is located between the plug and the bottom of a cup of the secondary opening and closing element.
9. shut-off valve as claimed in claim 8, it is characterised in that the reducing diameter part for being used to form main valve seat is equipped in the valve body,
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 it is 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, and the master opens
The bottom of a cup upper surface of closing member is provided with the annular protrusion around the main opening and closing element bottom of a cup through-hole, and the sealing surface of the auxiliary-seat is set
It sets on the annular protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810995357.6A CN108980443B (en) | 2018-08-29 | 2018-08-29 | High-temperature electromagnetic drive stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810995357.6A CN108980443B (en) | 2018-08-29 | 2018-08-29 | High-temperature electromagnetic drive stop valve |
Publications (2)
| Publication Number | Publication Date |
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| CN108980443A CN108980443A (en) | 2018-12-11 |
| CN108980443B true CN108980443B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810995357.6A Active CN108980443B (en) | 2018-08-29 | 2018-08-29 | High-temperature electromagnetic drive stop valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111379894A (en) * | 2020-04-21 | 2020-07-07 | 浙江中孚流体机械有限公司 | High-temperature steam electromagnetic valve for waste incineration |
| CN114623250B (en) * | 2022-03-20 | 2023-04-25 | 东北石油大学 | Anti-blocking throttle valve convenient to clean |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201944292U (en) * | 2010-06-18 | 2011-08-24 | 陈国顺 | Electromagnetic driven two-directional sealing stop valve |
| CN202451895U (en) * | 2011-12-20 | 2012-09-26 | 季克寅 | Stop check valve |
| CN203670809U (en) * | 2014-01-13 | 2014-06-25 | 中国安全生产科学研究院 | Oil and gas pipeline stop valve capable of confirming turn-off state in remote mode |
| CN105650329A (en) * | 2016-03-08 | 2016-06-08 | 陈国顺 | Ultrahigh-pressure large-caliber electromagnetic valve |
| CN207470791U (en) * | 2017-10-19 | 2018-06-08 | 浙江菲比克阀门有限公司 | A kind of Double-clack stop valve |
-
2018
- 2018-08-29 CN CN201810995357.6A patent/CN108980443B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201944292U (en) * | 2010-06-18 | 2011-08-24 | 陈国顺 | Electromagnetic driven two-directional sealing stop valve |
| CN202451895U (en) * | 2011-12-20 | 2012-09-26 | 季克寅 | Stop check valve |
| CN203670809U (en) * | 2014-01-13 | 2014-06-25 | 中国安全生产科学研究院 | Oil and gas pipeline stop valve capable of confirming turn-off state in remote mode |
| CN105650329A (en) * | 2016-03-08 | 2016-06-08 | 陈国顺 | Ultrahigh-pressure large-caliber electromagnetic valve |
| CN207470791U (en) * | 2017-10-19 | 2018-06-08 | 浙江菲比克阀门有限公司 | A kind of Double-clack stop valve |
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| CN108980443A (en) | 2018-12-11 |
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