CN105508627B - A kind of manual balanced type valve of pressure duct - Google Patents
A kind of manual balanced type valve of pressure duct Download PDFInfo
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- CN105508627B CN105508627B CN201510992808.7A CN201510992808A CN105508627B CN 105508627 B CN105508627 B CN 105508627B CN 201510992808 A CN201510992808 A CN 201510992808A CN 105508627 B CN105508627 B CN 105508627B
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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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of manual balanced type valve of pressure duct, and it mainly includes valve body, bonnet, big valve rod, gland, flap, piston, small valve core, spring, piston snap ring and handwheel.The present invention carries out fluid pressure balance using the counter balance pocket of body top valve port and piston composition, reduce the driving force of valve regulated component, be advantageous to the opening and closing of valve, big stem structure is designed to more drainage slot structures, can effectively solve the problems, such as that fluid flows to counter balance pocket from higher-pressure region；Piston snap ring and cone valve pin are installed in the middle part of big valve rod, the cone valve pin for making to be installed on piston snap ring is in opening and closure state with the cone pin Bolt-hole fits on piston, played a part of as counter balance pocket pressure accumulation and pressure release.Valve body of the present invention employs balance type structure, reduces valve opening and the active force closed, and has the advantages that keying torque is small, sealing is reliable, stable work in work, adapts to multiple operating environments, simple to operate.
Description
Technical field
The invention belongs to stop valve field, more particularly, to a kind of manual balanced type valve of pressure duct.
Background technology
Valve suffers from extremely as control unit essential in fluid control systems in every profession and trade production development
It is widely applied.In oil exploitation, natural gas transport, the manufacture of waterpower management system, chemical industry, medicine production system；Water power,
In the power industry such as thermoelectricity and nuclear power；In the various transporting equipments such as vehicle, ship, aircraft, Valve controlling is all ubiquitous.It is special
Navigation, aviation and space flight not in national defence high and new technology field can all use various Special valves.
In industrial automation fluid control systems, stop valve is one of fluid control devices being used widely, its
For switching on or off medium.The species of stop valve is a lot, mainly has straight-through stop valve, right-angle type stop valve and single flow oblique
Stop valve.The valve of the present invention is used as one kind is extremely important to block class valve, and it is by being applied to valve rod that it, which opens and closes valve,
Add moment of torsion to switch on or off medium.
Existing stop valve is when operating pressure reaches more than 3.5MPa and latus rectum DN is more than 100mm, purely manual opening valve
Door is especially difficult, it is necessary to which additionally the increase arm of force could be opened smoothly, but these irregular operations will certainly cause one to valve
Fixed damage, substantially reduce the service life of valve.Therefore, a kind of manual balance type structure valve of high pressure big orifice is developed with urgent
The demand and application value cut.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the present invention proposes that one kind employs balance type structure, can drop
Low valve opening and the active force closed, have the advantages that keying torque is small, sealing is reliable, stable work in work, adapt to
Multiple operating environments, the manual balanced type valve of pressure duct simple to operate.
The manual balanced type valve of pressure duct provided by the invention, it is characterised in that including valve body, bonnet, big valve rod, filler
Gland, flap, piston, small valve core and handwheel, wherein：
The body base offers snout cavity, and its sidepiece offers outlet plenum, and its top offers top valve port；
The big valve rod includes bottom disc shape valve disc, and be connected a round bar shape valve handle in the middle part of valve disc；The valve handle is from bottom
Be engaged with the top of piston one section is upwardly into valve disc connecting place, circumferentially offers some drainage troughs；Opened above drainage trough
Provided with cylindrical notch；
The bonnet is fixed on the top valve port of valve body, for sealing valve chamber；The piston central circular through hole passes through
Valve handle in the middle part of big valve rod, piston base at the top of flap with being connected；The valve disc of the big stem bottom enters the top step of flap
Kong Zhong, shoulder hole bottom part aperture diameter are more than the valve disc external diameter, valve disc can in the cavity that piston base and flap are formed on move down
It is dynamic；
The small valve core, including drainage plate, spring and small valve-rod, drainage plate are located in the top step hole of flap, with institute
State shoulder hole and small valve-rod forms cavity；Conduction hole of the small valve-rod through flap bottom, is connected with drainage plate screw thread；Spring, which is embedded in, to be drawn
Between flowing plate and flap bottom, appropriate tension force is kept；Small valve-rod external diameter is less than the conduction hole internal diameter of flap bottom, has on small valve-rod
One bonnet, its external diameter are more than conduction hole internal diameter；The drainage plate is provided with drainage through hole；
During work, rotation hand wheel, big valve rod is moved down, and overcomes tension force of spring, and the small valve-rod on small valve core is pushed,
Bonnet on small valve-rod moves down, and opens the conduction hole of flap bottom；Continue rotation hand wheel, the piston being connected as a single entity, flap and small
Valve element moves down；Fluid media (medium) is from the conduction hole of flap bottom, through the drainage on the drainage through hole and big valve rod on drainage plate
Groove exports, and reduces porch fluid medium pressure.
Further, the manual balanced type valve of described pressure duct, it is characterised in that also including counter balance pocket；
The counter balance pocket includes body top valve port, piston snap ring, cone valve pin and piston, wherein：
The piston snap ring is using big valve rod as circle center, the cylindrical notch being fixed on big valve rod；On piston snap ring with
Circle Central Symmetry offers multiple through holes, and the upper piston area has the cone pin nail being engaged with the through hole, cone valve pin
It is fixed in the through hole on piston snap ring, plunger can pass in and out the cone pin nail of piston；The top land offers circular recessed
Groove, has a diameter larger than the external diameter of the piston snap ring, and piston snap ring can move up and down under the drive of big valve rod in it；Piston
The descending extreme position of snap ring is that upper limit by row is no more than in the middle part of cone valve pin at the cone pin nail tight fit of the conical surface and piston
Bonnet bottom, stroke is identical up and down with valve disc for total kilometres；
When needing to open valve, rotation hand wheel, big valve rod moves down, the cone valve pin being fixed on piston snap ring
Plunger moves downwardly toward the pin hole on the piston of cooperation, until the taper surface in the middle part of cone valve pin closely covers the cone of piston
Shape pin hole, realize the pressure accumulation of counter balance pocket；When needing to close valve, rotation hand wheel, big valve rod moves up, and is fixed on piston
The plunger of cone valve pin on snap ring moves up, until the taper surface in the middle part of cone valve pin completely disengages the tapered dowel of piston
Hole, realize the pressure release of counter balance pocket.
Further, in the manual balanced type valve of described pressure duct, the bonnet top is provided with circular groove, sets thereon
There is gland, the space between circular groove and gland, make its sealing provided with stuffing-box.
Further, in the manual balanced type valve of described pressure duct, the valve body, flap and bonnet use silizin material
Material.
Further, in the manual balanced type valve of described pressure duct, big valve rod and piston use aluminum-bronze material.
Further, in the manual balanced type valve of described pressure duct, gland uses manganese brass material.
Further, in the manual balanced type valve of described pressure duct, valve clack sealing surface and the valve body sealing surface composition conical surface
Hard sealing, valve clack sealing surface and piston seal face composition metallic gasket seal firmly, body top sealing valve port face and valve bonnet seal
Face composition metallic gasket seals firmly.
The present invention has following technical characterstic：
1st, the present invention carries out fluid pressure balance using the counter balance pocket of body top valve port and piston composition, reduces valve and adjusts
The driving force of component is saved, is advantageous to the opening and closing of valve.
2nd, big stem structure is designed to more drainage slot structures by the present invention, and rational deployment is in big stem lower portion circumference, phase
That answers can effectively solve the problems, such as that fluid flows to counter balance pocket from higher-pressure region.
3rd, present invention notch installation piston snap ring and cone valve pin in the middle part of big valve rod, when valve rod moves up and down with piston
Snap ring moves therewith, and the cone valve pin for making to be installed on piston snap ring is in opening and closed form with the taper hole on piston
State, play a part of as counter balance pocket pressure accumulation and pressure release.
4th, the present invention is mainly made up of in seal aspect four parts：1. the conical surface of valve clack sealing surface and valve body sealing surface composition
Hard sealing；2. the metallic gasket of valve clack sealing surface and piston seal face composition seals firmly；3. body top sealing valve port face and valve
The metallic gasket of lid sealing surface composition seals firmly；4. big valve rod and the packing box seal for having relative motion position.
5th, the present invention takes two-stage to seal firmly, overcomes needs while the problem of leakage be present when sealing；Work as Open valve
When, the piston being connected as a single entity, flap and small valve core are opened in top to big valve rod downwards, valve clack sealing surface is departed from valve body sealing surface, reach
To Open valve state, now valve plays medium in connecting pipeline.When closing valve, big valve rod, which pulls up, to be linked as
Piston, flap and the small valve core of one, reversely apply active force, make valve clack sealing surface closely sealed with valve body sealing surface, reach closing
Valve state, now valve play a part of cut off pipeline in medium.
In general, the contemplated above technical scheme of the present invention, mainly possesses following technological merit：
1. the valve regulated component of the present invention uses two-stage hard sealing structure, the difficulty sealed during valve opening and closing can effectively improve
Topic, and avoid while the problem of poorly sealed be present when sealing.
2. the top valve port of the invention by valve body and piston decomposition pressure counter balance pocket, making valve, two cavity pressures are approximate flat up and down
Weighing apparatus, the driving force of valve opening and closing is reduced, be advantageous to the energy-conservation of system.
3. the present invention is small to opening and closing torque needed for valve, multiple operating environments are adapted to, it is simple to operate.
Brief description of the drawings
Fig. 1 is the valve overall structure diagram of the present invention；
Fig. 2 is the valve regulated component structure diagram of the present invention；
Fig. 3 is valve flap, big valve rod, piston, the small valve-rod structural representation group figure of the present invention；
Fig. 4 is the valve completely closed state structural representation of the present invention；
Fig. 5 is the valve small valve-rod opening structural representation of the present invention；
Fig. 6 is the valve fully open state structural representation of the present invention；
In all of the figs, identical reference is used for representing identical element or structure, wherein：(1) valve body, (2)
Small valve-rod, (2-1) bonnet, (3) flap, (3-1) flap shoulder hole, (3-2) conduction hole, (4) drainage plate, (5) big valve rod, (5-
1) valve disc, (5-2) valve handle, (5-3) drainage trough, (5-4) cylindrical notch, (6) packing ring, (7) screw, (8) piston, (8-1) circle
Shape through hole, (8-2) cone pin nail, (9) cone valve pin, (10) piston snap ring, (11) nut, (12) bolt, (13) plain cushion,
(14) spring washer, (15) bonnet, (16) gland, (17) handwheel, (18) nut, (19) pin, (20) bearing pin, (21) opening
Pin, (22) stuffing-box, (23) metallic gasket, (24) spring.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing 4,5 and accompanying drawing 6,
The present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.In addition, technical characteristic involved in each embodiment of invention described below is only
Conflict can is not formed each other to be mutually combined.
A kind of manual balanced type valve of pressure duct of the present invention, its emphasis for inventing design have at following 2 points：First, design
Good valve body balances cavity configuration, and piston plays vital effect to balanced action as the pressure-resistant wall of balanced structure, by work
Plug counter balance pocket is integrally advantageous to process, reduces cost with valve design to be same；Second, valve regulated component is designed, can be effective
Solve valve seal integrity problem, smoothly realize the opening and closing of valve.
The specific assembly work process of valve of the present invention is as follows：
1st, the assembling of valve regulated component is (including flap 3, small valve-rod 2, spring 24, drainage plate 4, big valve rod 5, piston 8, living
Fork clip ring 10 and cone valve pin 9 etc.)
First spring 24 is placed between drainage plate 4 and the shoulder hole 3-1 of flap 3, small valve-rod 2 is then passed through into flap 3
Conduction hole 3-2 is connected with drainage plate 4；Piston snap ring 10 is fixed in the cylindrical notch 5-4 on big valve rod 5, then by cone valve
Pin 9 is installed on piston snap ring 10, and is coordinated with the cone pin nail 8-2 on piston 8, while big valve rod 5 passes through piston
Through hole 8-1, the top of flap 3 is then fixed on together.
2nd, valve body general assembly (including valve regulated component, valve body 1, bonnet 15, gland 16, handwheel 17 etc.)
First valve body 1 is fixed, then passed through valve regulated component from the bottom valve port of valve body 1 successively, then bonnet 15 is worn
Excessive valve rod 5 is simultaneously connected in the top of valve body 1, with top sealing valve port；Secondly, stuffing-box 22 is loaded stuffing-box cavity, passed through
Gland 16 seals；Finally, handwheel 17 is installed on the big top of valve rod 5, that is, completes valve body general assembly.
The specific open and close course of work of valve of the present invention is as follows：
1. valve opening process
1) state before valve opening：Valve is closed.The cone pin nail 8-2 sealing surfaces of cone valve pin 9 and piston 8
Separation, the cone pin nail 8-2 of piston 8 are in opening.The bottom of flap 3 is high-pressure fluid medium, the sealing surface of flap 3 and valve
Body 1 is fitted close, the small valve-rod 2 of the sealed bottom face of flap 3 and small valve core is fitted close.Now, valve is in and completely closes shape
State.
2) opening process：It is that big valve rod 5 provides power to rotate handwheel 17, and big valve rod 5 first overcomes the pressure of external fluid medium
Power, moved downward along the through hole 8-1 of piston 8, now driving force only needs to overcome the 2 times end valves of small valve-rod of fluid media (medium) to small valve core
Pressure caused by cap 2-1 cross-sectional areas.The motion makes the lower end sealing surface of small valve-rod 2 and the sealed bottom face of flap 3 of small valve core
Open, for fluid media (medium) successively along the drainage plate 4 of small valve core, the drainage trough 5-3 of big valve rod 5 enters the counter balance pocket of piston 8.Big valve
Moving down for bar 5 drives the cone valve pin 9 on the piston snap ring 10 connected firmly to move down, and sealing piston cone pin nail 8-2, prevents from introducing
To the external high pressure fluid medium pressure release of counter balance pocket.In opening process, fluid media (medium) acts on the upper surface of piston 8, produces downward
Power, balance most of external high pressure fluid medium to active force upward caused by flap 3.The continuous fortune downwards of big valve rod 5
It is dynamic, promote piston 8, flap 3 and small valve core downward, until valve is opened completely.As shown in Figure 5,6.
2. close valve process
1) state before valve is closed:Valve is in opening.The lower flow pressure medium of flap 3 is slightly above upper flow Jie
Matter pressure.The lower end bonnet 2-1 sealing surfaces of small valve-rod 2 of small valve core and the sealed bottom face of flap 3 are in opening, and cone valve pin
Nail 9 is closed with piston taper pin hole 8-2, now, approximately the same with external fluid medium pressure in counter balance pocket.
2) closing process：It is that big valve rod 5 provides power to rotate handwheel 17, and big valve rod 5 drives the flap 3 being connected as a single entity and lived
The motion upwards of plug 8, now, the lower end bonnet 2-1 sealing surfaces of small valve-rod 2 of small valve core and the sealed bottom face of flap 3 are likely to be at out
Open or closed mode, therefore, fluid media (medium) in counter balance pocket or flow out or pass through piston taper by the drainage trough 5-3 of big valve rod 5
Pin hole 8-2 flows out.After the sealing surface of flap 3 and the contact sealing of the sealing surface of valve body 1, big valve rod 5 is continued up until small
The lower end bonnet 2-1 sealing surfaces of small valve-rod 2 of valve element and the sealed bottom face of flap 3 are fully sealed.Now, cone valve pin 9 and piston
Cone pin nail 8-2 sealing surfaces separate, and piston taper pin hole 8-2 is in opening.Now, counter balance pocket and low-pressure area pipeline
Communicate, low-pressure fluid medium is acted on the outer surface of piston 8, and extraneous high-pressure fluid medium acts on the lower surface of flap 3, both
Produce effect larger upwards to make a concerted effort, so as to promote flap 3 and small valve-rod 2, the sealing surface at two is obtained better seal effect
Fruit.As shown in Figure 4.
The manual balanced type valve of pressure duct in the present embodiment, mainly include valve body 1, bonnet 15, big valve rod 5, filler pressure
Lid 16, flap 3, piston 8, small valve core and handwheel 17.The counter balance pocket formed using the top valve port of valve body 1 and piston 8 carries out fluid
Pressure balance, reduce the driving force of valve regulated component, be advantageous to the opening and closing of valve；By the structure design of big valve rod 5
Into more drainage trough 5-3 structures, and rational deployment can effectively solve fluid and flow to balance from higher-pressure region in the big lower circumference of valve rod 5
The problem of chamber；In the big middle part of valve rod 5 installation piston snap ring 10 and cone valve pin 9, make the cone valve pin being installed on piston snap ring 10
Nail 9 is in opening and closure state with the cone pin nail 8-2 on piston 8, can play as counter balance pocket pressure accumulation and pressure release
Effect.Valve body of the present invention employs balance type structure, reduces valve opening and the active force closed, and has keying torque small, close
The advantages that envelope property is reliable, stable work in work, adapts to multiple operating environments, simple to operate.
Selected as one kind, the valve body 1, flap 3 and bonnet 15 can use silizin material.Big valve rod 5 and piston 8 are adopted
Use aluminum-bronze material.Gland 16 uses manganese brass material.
Selected as one kind, the sealing surface of flap 3 and valve body 1 sealing surface the composition conical surface seals firmly.The sealing surface of flap 3 and
The sealing surface of piston 8 composition metallic gasket seals firmly.The top sealing valve port face of valve body 1 and the sealing surface of bonnet 15 composition metallic gasket are hard
Sealing.Take two-stage to seal firmly, needs can be overcome while the problem of leakage be present when sealing.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (9)
1. a kind of manual balanced type valve of pressure duct, it is characterised in that it includes valve body (1), bonnet (15), big valve rod (5), filled out
Expect gland (16), flap (3), piston (8), small valve core and handwheel (17), wherein：
Valve body (1) bottom offers snout cavity, and its sidepiece offers outlet plenum, and its top offers top valve port；
The big valve rod (5) includes bottom disc shape valve disc (5-1), and be connected a round bar shape valve handle (5-2) in the middle part of valve disc (5-1)；
The valve handle (5-2) is upwardly into one section be engaged with the top of piston (8) from bottom with valve disc (5-1) connecting place, circumferentially opens
Provided with some drainage troughs (5-3)；Cylindrical notch (5-4) is offered above drainage trough (5-3)；
The bonnet (15) is fixed on the top valve port of valve body (1), for sealing valve chamber；Piston (8) central circular leads to
Hole (8-1) is by valve handle (5-2) in the middle part of big valve rod (5), and piston (8) bottom at the top of flap (3) with being connected；The big valve rod (5)
The valve disc (5-1) of bottom enters in the top step hole (3-1) of flap (3), and shoulder hole (3-1) bottom part aperture diameter is more than the valve disc
(5-1) external diameter, valve disc (5-1) can move up and down in the cavity that piston (8) bottom and flap (3) are formed；
The small valve core, including drainage plate (4), spring (24) and small valve-rod (2), drainage plate (4) are located at the flap rank of flap (3)
In terraced hole (3-1), cavity is formed with flap shoulder hole (3-1) and small valve-rod (2)；Drainage of the small valve-rod (2) through flap (3) bottom
Hole (3-2), it is connected with drainage plate (4) screw thread；Spring (24) is embedded between drainage plate (4) and flap (3) bottom, is kept for appropriate
Power；Small valve-rod (2) external diameter is less than conduction hole (3-2) internal diameter, has a bonnet (2-1) on small valve-rod (2), its external diameter is more than conduction hole
(3-3) internal diameter；The drainage plate (4) is provided with drainage through hole；
During work, rotation hand wheel (17), big valve rod (5) moves down, and overcomes the tension force of spring (24), by the small valve on small valve core
Bar (2) pushes, and the bonnet (2-1) on small valve-rod (2) moves down, and opens the conduction hole (3-2) of flap (3) bottom；Continue to rotate hand
Take turns (17), the piston being connected as a single entity (8), flap (3) and small valve core move down；Drainage of the fluid media (medium) from flap (3) bottom
Hole (3-2), exported through the drainage trough (5-3) on the drainage through hole on drainage plate (4) and big valve rod (5), to reduce porch
Fluid medium pressure.
2. a kind of manual balanced type valve of pressure duct as claimed in claim 1, it is characterised in that also including counter balance pocket；
The counter balance pocket includes valve port, piston snap ring (10), cone valve pin (9) and the piston (8) at the top of valve body (1), wherein：
The piston snap ring (10) is to justify center, the cylindrical notch (5-4) being fixed on big valve rod (5) with big valve rod (5)；It is living
Multiple through holes are offered to justify Central Symmetry on fork clip ring (10), the piston (8) is provided with the cone being engaged with the through hole
Shape pin hole (8-2), cone valve pin (9) are fixed in the through hole on piston snap ring (10), and plunger can pass in and out the taper of piston (8)
Pin hole (8-2)；Circular groove is offered at the top of the piston (8), has a diameter larger than the external diameter of the piston snap ring (10), with
Valve port Compositional balance chamber at the top of valve body (1), piston snap ring (10) can move up and down under the drive of big valve rod (5) in it；It is living
Fork clip ring (10) descending extreme position is that the cone pin nail (8-2) of the conical surface and piston (8) in the middle part of cone valve pin (9) is fitted close
Place, upper limit by row are no more than bonnet (15) bottom, and stroke is identical up and down with valve disc (5-1) for total kilometres；
When needing to open valve, rotation hand wheel (17), big valve rod (5) moves down, the cone being fixed on piston snap ring (10)
The plunger of valve pin nail (9) is mobile downwardly toward the cone pin nail (8-2) on the piston (8) of cooperation, until in the middle part of cone valve pin (9)
Taper surface closely cover the cone pin nail (8-2) of piston (8), realize the pressure accumulation of counter balance pocket；When needing to close valve,
Rotation hand wheel (17), big valve rod (5) move up, and the plunger of the cone valve pin (9) being fixed on piston snap ring (10) is to moving up
It is dynamic, until the taper surface in the middle part of cone valve pin (9) completely disengages the cone pin nail (8-2) of piston (8), realize counter balance pocket
Pressure release.
3. a kind of manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that on the bonnet (15)
Portion is provided with circular groove, which is provided with gland (16), the space between circular groove and gland (16), provided with filler
Letter (22) makes its sealing.
4. a kind of manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that the valve body (1), valve
Valve (3) and bonnet (15) use silizin material.
5. a kind of manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that big valve rod (5) and piston
(8) aluminum-bronze material is used.
6. a kind of manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that gland (16) is adopted
With manganese brass material.
A kind of 7. manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that flap (3) sealing surface and
Valve body (1) sealing surface composition conical surface seals firmly.
A kind of 8. manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that flap (3) sealing surface and
Piston (8) sealing surface composition metallic gasket seals firmly.
A kind of 9. manual balanced type valve of pressure duct as claimed in claim 1 or 2, it is characterised in that valve port at the top of valve body (1)
Sealing surface and bonnet (15) sealing surface composition metallic gasket seal firmly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992808.7A CN105508627B (en) | 2015-12-24 | 2015-12-24 | A kind of manual balanced type valve of pressure duct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992808.7A CN105508627B (en) | 2015-12-24 | 2015-12-24 | A kind of manual balanced type valve of pressure duct |
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| CN105508627A CN105508627A (en) | 2016-04-20 |
| CN105508627B true CN105508627B (en) | 2017-11-14 |
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| CN201510992808.7A Active CN105508627B (en) | 2015-12-24 | 2015-12-24 | A kind of manual balanced type valve of pressure duct |
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| CN103899764A (en) * | 2014-03-19 | 2014-07-02 | 哈尔滨工程大学 | External pilot balance type kingston valve |
| CN103912687A (en) * | 2014-03-12 | 2014-07-09 | 哈尔滨工程大学 | Large submergence depth leak prevention double seal pilot-operated type sea suction valve |
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| DE7602237U1 (en) * | 1975-06-19 | 1984-08-02 | Turbodyne Corp., Wellsville, N.Y. | SAFETY RELEASE VALVE |
| CN201103698Y (en) * | 2007-09-17 | 2008-08-20 | 江西船用阀门厂 | Balancing type break valve |
| CN201284835Y (en) * | 2008-10-23 | 2009-08-05 | 南通市电站阀门有限公司 | Double-valve core balancing type large diameter supercritical parameter break valve |
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| CN103899764A (en) * | 2014-03-19 | 2014-07-02 | 哈尔滨工程大学 | External pilot balance type kingston valve |
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|---|---|
| CN105508627A (en) | 2016-04-20 |
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