CN104295762B - Low-torque enforced sealing type fixing ball valve - Google Patents
Low-torque enforced sealing type fixing ball valve Download PDFInfo
- Publication number
- CN104295762B CN104295762B CN201410226370.7A CN201410226370A CN104295762B CN 104295762 B CN104295762 B CN 104295762B CN 201410226370 A CN201410226370 A CN 201410226370A CN 104295762 B CN104295762 B CN 104295762B
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- Prior art keywords
- valve
- valve seat
- valve body
- spheroid
- floating
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a low-torque forced-seal type fixed ball valve. The low-torque forced-seal type fixed ball valve comprises a valve body, an auxiliary valve body, a ball body and a floating valve seat driving device. The floating valve seat driving device is provided with axial U-shaped grooves on platform shoulders of a floating valve seat, and the U-shaped grooves are connected with annular grooves in a dowel bar correspondingly; the dowel bar is coaxially provided with a fine round rod part which penetrates through the side wall of the auxiliary valve body from inside to outside in a movable sealing mode; the dowel bar is further coaxially provided with a screw part fixedly connected with a force transferring plate installed on a fluid pipeline of the auxiliary valve body; a plurality of telescopic hydraulic cylinders are further installed on the outer side of the force transferring plate in a balanced mode; cylinder bodies are fixedly connected with the force transferring plate; piston rods are fixedly connected with the auxiliary valve body; the force transferring plate, the dowel bar and the floating valve seat can be simultaneously subjected to simultaneous displacement under driving of telescopic displacement of the telescopic hydraulic cylinders, so that the ball valve does 90-degree opening and closing rotating movement under the action of low torque, and forced seal between the floating valve seat and the ball body can be achieved; and related actions of the ball valve can be completed through an automatic control device. The low-torque forced-seal type fixed ball valve is simple in structure, easy to manufacture and long in service life.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of low moment of torsion forced seal formula and fix spherical ball valve.
Background technology
Ball valve is a kind of spheroid valve as closure member with runner, and it is little that it has flow resistance, does not destroy fluid
Shape, the advantages such as switch is convenient, but between spheroid and valve seat, when switch, produced pressure rotates abrasion is also current
A great problem, people have often been used for traditional ball valve the automobile of pine not braking, have rotated often make under high frictional resistance
Becoming the wear out failure of single sealing parts to have impact on the service life of ball valve complete machine, the research worker of valve industry is this
Have also been made substantial amounts of work, such as Chinese invention patent ZL201010295018.0, this invention can be outer to valve pocket at ball valve body
Seal pressure between interior spheroid and valve seat and valve seat and valve seat filler effectively regulates, and can prevent jam and
Improve security performance, but reduce during ball valve switch and do not have especially in the pressure rotation abrasion between spheroid and valve seat
Progressive, disclosed in Chinese utility model patent ZL201320456935.1 one " low moment of torsion is without abrasion fixing ball valve "
It is in particular in that rotation when ball valve opens and closes be spheroid relative to valve seat is complete rotation in 90 ° when less than pressure
Action, so operation moment of torsion is low, wear and tear between spheroid and valve seat the least, but it must be the sealing of spheroid rear valve base
Can be only achieved above effect, wherein weak point mainly shows themselves in that the difficult sealing between valve seat insert and spheroid and valve seat
Spend the biggest and uncertain, practice proving, in pipeline, fluid pressure more high sealing difficulty is the biggest.
Summary of the invention
Present invention aim to overcome that prior art is not enough, it is provided that a kind of low moment of torsion forced seal formula fixes spherical ball valve.
In order to achieve the above object, the technical solution used in the present invention is such that a kind of low moment of torsion forced seal admittedly
Determining spherical ball valve, it includes: valve body, auxiliary valve body, valve gap, upper fixing axle, lower fixing axle, valve rod, spheroid, float trap
Seat, valve seat filler, also include the floating valve seat that is made up of floating valve seat, dowel steel, force transmitting board, telescopic hydraulic pump
Driving means, valve rod driving device 20 and control device 22, it is characterised in that；Described floating valve seat driving means is it
There is on floating valve seat the shoulder of a major diameter, the same circumference of the edge of its shoulder is machined with several in uniformly
The axial U-lag of arrangement, is connected with dowel steel in its U-lag respectively, distinguishes from inside to outside on described dowel steel is coaxial
There is interior big footpath round bar part, annular groove portion, outer big footpath round bar part, thin round bar part and screw portion, its annular
Groove inserts among the U-lag on valve seat shoulder, and cannelure and interior big footpath round bar part and outer big footpath round bar are formed in part with a left side
Right radially inner ring shape side, around two radially inner ring shape sides and two radial outer side phases of valve seat shoulder U-lag
Coupling, dowel steel filling tube and dowel steel that the thin round bar part of described dowel steel and static seal are installed on auxiliary valve body are filled out
The dowel steel filler put in barrel, dowel steel screw thread gland nut screw connection, and compressed by dowel steel screw thread gland nut and pass
Power bar filler, makes dowel steel possess movable sealing performance, and the screw portion of described dowel steel is fixed with force transmitting board outside ball valve body
Connecting, the endoporus of described force transmitting board and the cylindrical of auxiliary valve body fluid line are matched in clearance, same outside described force transmitting board
The most uniformly being provided with several telescoping hydraulic cylinders on circumference, the cylinder body of its telescoping hydraulic cylinder is fixing connection with force transmitting board,
Piston rod in telescoping hydraulic cylinder is fixing connection with auxiliary valve body, the hydraulic fluid conduit of telescoping hydraulic cylinder and hydraulic pump
Be connected, outer shifting positioning screw is installed between described force transmitting board and auxiliary valve body, outer shifting positioning screw pull bodyside plan and
Guide thimble side plane is affixed, and described auxiliary valve body is installed with interior shifting positioning screw, and the installation of described ball valve flows to can
Before thinking ball, valve seat is close can also seal for ball rear valve base.
In said structure, by the phase between floating valve seat, dowel steel, force transmitting board, telescoping hydraulic cylinder, auxiliary valve body
The composition that connects one floating valve seat driving means, can drive floating valve seat as axis when dowel steel stretches under external force
Making axial displacement, the distance of its axial stretching displacement can be regulated and controled by outer shifting positioning screw and interior shifting positioning screw, due to
Have employed floating valve seat driving means and outer shifting positioning screw and interior shifting positioning screw, it is possible to external at fixing ball valve
Seal pressure between floating valve seat in valve pocket and spheroid is control effectively, makes fixing spherical ball valve 90 ° rotate dynamic
As low torque operation, its seal form has the forced seal of stop valve character.
As the further setting of the present invention, between the cylindrical of the described endoporus at force transmitting board and auxiliary valve body fluid line
It is filled with thermal insulation inserts.
In said structure, its thermal insulation inserts effect is the high and low to telescoping hydraulic cylinder of reduction pipeline medium temperature
In liquid and the impact of potted component.
As the further setting of the present invention, the outside of described telescoping hydraulic cylinder cylinder body has the temperature control sealing installation
Chuck.
In said structure, its temperature control chuck can effectively ensure that telescoping hydraulic cylinder is in harsh pipeline medium temperature
Safe operation at a temperature of degree or harsh environment.
As the further setting of the present invention, described floating valve seat shoulder also has the R of Shuo Zhi center and U-lag
The same circumference in the center of circle and in uniform intervals the through hole of arrangement, there is the spiral thrust bar of movable sealing function and may pass through its through hole and squeeze
Pressure gland with compress valve seat filler, dowel steel filling tube and spiral thrust bar filling tube on the same circumference of auxiliary valve body in
Interval is installed.
In said structure, ball valve its valve seat filler when closed in valve seat stuffing-box by spiral thrust bar thrust and
The dual-pressure effect of fluid medium pressure is issued to seal reliably.
As the further setting of the present invention, the upper end of described valve body is installed with fixing axle, and it stretches into valve pocket
The cylindrical of interior axle head matches with the endoporus on spheroid top.
In said structure, it can be that major diameter is joined that the cylindrical of its fixing shaft end and the endoporus on spheroid top match
Close, improve the cooperation intensity between spheroid and fixing axle and resist the thrust of high-pressure fluid, and effectively protecting valve rod, making
Valve rod is not affected by pressure medium.
As the further setting of the present invention, the endoporus of fixed axle is provided with valve rod, its valve rod coaxially go up by
In the outwards side's of having tenon, big round bar, small round bar the most successively, the shoulder between large and small round bar and on fix the endoporus of axle
Being provided with bearing between step end face, the square tenon of its valve stem end and the square tongue-and-groove of spheroid upper end match.
In said structure, can prevent valve rod from blowing out, the endoporus step end of valve rod and upper fixing axle can also be reduced simultaneously
Frictional force between face.
As the further setting of the present invention, the lower end of described valve body is installed with lower fixing axle, and it stretches into valve pocket
The cylindrical of interior shaft end matches with the inner circle of spheroid lower blind bore, and the end of lower fixing axle is inner with the blind hole of spheroid bottom
Bearing is installed between face.
In said structure, lower fixing axle can be not only that major diameter coordinates with the inner circle of spheroid lower blind bore, lower fixing
Axle also can the deadweight of support spheroid, make to coordinate to produce between spheroid and sealing surface of seat to lay particular stress on, the most also utilize bearing
Reduce the frictional force between spheroid and lower fixing axle.
Position, gap tool as the further setting of the present invention, between valve body inner bore and the spheroid of described lower fixing axle
Having radial direction through hole, its radial direction through hole constitutes again a drain outlet with mesopore, and its drain outlet also communicates with sewage draining valve,
In said structure, the dirt in its valve pocket can be by the drain outlet of lower fixing axle and through sewage draining valve dump valve
Outside Men.
As the further setting of the present invention, described valve gap being provided with auxiliary-seat, its auxiliary-seat is in backside springs power
Effect under be close to spheroid,
In said structure, its auxiliary-seat is close to spheroid under the effect of backside springs power, and it not only can strike off spheroid
Surface attaches thing, also is able to make ball valve keep unnotched overall runner simultaneously.
As the further setting of the present invention, described control device is made up of Automated condtrol components and parts such as PLC.
In said structure, the operation program that is mutually related between floating valve seat driving means and valve rod driving device can be by
Control device to complete.
The invention has the beneficial effects as follows:
1. a kind of low moment of torsion forced seal formula of the present invention fixes spherical ball valve, have employed floating valve seat driving means, it
Outside ball valve body, the floating valve seat in valve pocket can be carried out effective axial tension control, ball valve is made during open and close
Being rotating against under low frictional resistance between spheroid and valve seat during 90 ° of spinning movements, ball valve closes seal form
It is similar to the forced seal form of stop valve, the action being associated between its floating valve seat driving means and valve rod driving device
Can be completed by automation control system, open and close torque of the present invention is the lowest, it is little to wear and tear, and is effectively improved the safety of ball valve
Energy, technical parameter, automation mechanized operation performance and used life.
2. a kind of low moment of torsion forced seal formula of the present invention fixes spherical ball valve, owing to have employed floating valve seat driving means,
Valve rod driving device power configuration can be reduced, the bypath system of ball valve can also be reduced simultaneously, seal the passivenesses such as greasing leak stopping
Measure, it is possible to save the energy to a great extent and save resource.
3. a kind of low moment of torsion forced seal formula of the present invention fixes spherical ball valve simple in construction, easily manufactured, and parts can
According in pipe-line system fluid media (medium) parameter select suitable material manufacture, it is possible to be applicable to high temperature, low temperature, high pressure,
The harsh fluid line such as strong corruption, Heisui River, mortar, the flow channel shape of the present invention can be identical with fluid line, without deformation bend,
Non-notch, does not destroy flow profile, absence of vortices district, noise is low, it is little to vibrate, its fluid resistance less than all of gate valve,
The block valve such as stop valve, butterfly valve, so energy-saving effect is especially pronounced.
Accompanying drawing explanation
Fig. 1 is the structural representation of the opening of the present invention.
Fig. 2 is the structural representation of the closed mode of the present invention.
Fig. 3 is the left view of the present invention.
Fig. 4 is floating valve seat and the attachment structure schematic diagram of dowel steel in the present invention.
Fig. 5 is floating valve seat schematic diagram in the present invention.
Figure is labeled as: 1. valve body, 2. auxiliary valve body, 201. auxiliary valve body fluid line, 3. spheroid, 4. floating valve seats,
401.U shape groove, 402. through holes, 5. valve gap, 6. dowel steel, 61. dowel steel filling tubes, 62. dowel steel fillers, 63.
Dowel steel screw thread filler pressing sleeve, big footpath round bar in 601., 602. cannelures, 603. outer big footpath round bars, 604. thin round bars,
605. screw rods, 7. force transmitting board, 8. telescoping hydraulic cylinder, 801. cylinder bodies, 802. piston rods, 803. temperature control chucks, 9.
Valve seat filler, 901. valve seat gland, 10. spiral thrust bars, 101. spiral thrust bar filling tubes, 102. spirals push away
Power bar filler, 103. screw thread filler pressing sleeves, fix axle on 11., on 1100., fix axle bearing, 12. valve rods, 13. times are solid
Dead axle, 1300. times fixing axle bearings, 1301. radial direction through hole, 1302. mesopores, 14. blowoff valves, 15. auxiliary-seats, 151.
Spring, moves positioning screw, 161. guide thimbles, 162. screws, moves positioning screw in 17. outside 16., 18. thermal insulations are filled
Material, 19. hydraulic pumps, 20. valve rod driving device, 21. valve stem packings, 22. automatic control devices.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings:
Being that a kind of low moment of torsion forced seal formula fixes spherical ball valve as Figure 1-5, it includes the both sides of valve body 1 respectively
Being installed with auxiliary valve body 2 and valve gap 5, the upper end of valve body 1 is provided with fixing axle 11 and the spheroid 3 being placed in valve pocket
The circular hole of upper end matches, and the lower end of valve body 1 is provided with the circular hole of lower fixing axle 13 and spheroid 3 lower end and matches, valve
Bar 12, through among upper fixing axle 11, is equipped with valve stem packing 21, its valve between upper fixing axle 13 and valve rod 12
The square tenon of bar 12 the inner and the square mortise of spheroid 3 match, and floating valve seat 4 is placed in the outside of spheroid 3, its sealing surface
Be affixed with spheroid 3, between floating valve seat 4 and valve body 1, be equipped with valve seat filler 9, it also include by floating valve seat 4,
Floating valve seat driving means that dowel steel 6, force transmitting board 7, telescopic hydraulic pump 8 are constituted, valve rod driving device 20
With control device 22, described floating valve seat driving means is to have the shoulder of a major diameter on its floating valve seat 4, at Qi Tai
Shoulder edge same circumference on be machined with several in evenly distributed axial U-lag 401, in its U-lag 401
Be separately installed with dowel steel 6, described dowel steel 6 coaxial on be respectively provided with from inside to outside interior big footpath round bar part 601,
Annular groove portion 602, outer big footpath round bar part 603, thin round bar part 604 and screw portion 605, its cannelure 602
Insert among the U-lag 401 on floating valve seat shoulder, two ring-type radially inner side faces of cannelure 602 and floating valve seat
The lateral surface of shoulder U-lag 401 matches, and the thin round bar part 604 of described dowel steel 6 and static seal are installed on secondary valve
Dowel steel filling tube 61 on body 2 and the dowel steel filler 62 wherein put, dowel steel screw thread gland nut 63 phase
Coordinate, and compressed dowel steel filler 62 by dowel steel screw thread gland nut 63, make dowel steel 6 possess movable sealing performance,
The screw portion 605 of described dowel steel 6 is outer at ball valve body and force transmitting board 7 is fixing connects, the endoporus of described force transmitting board 7 with
The cylindrical of auxiliary valve body fluid line 201 is matched in clearance, and the same circumference outside described force transmitting board 7 is the most uniformly provided with
Several telescoping hydraulic cylinders 8, the cylinder body 801 of its telescoping hydraulic cylinder 8 is connected in fixing with force transmitting board 7, telescopic liquid
Piston rod 802 in cylinder pressure 8 is connected in fixing with auxiliary valve body 2, the hydraulic fluid conduit of telescoping hydraulic cylinder 8 and hydraulic pressure
Pump 19 is connected, and is provided with outside valve seat shifting positioning screw 16 between described force transmitting board 7 and auxiliary valve body 2, and outer shifting positions spiral shell
The side plane pulling bodyside plan and a guide thimble 161 of bar 16 is affixed, and its guide thimble 161 is by screw 162 in addition
Fixing, move positioning screw 17 in described auxiliary valve body 2 is provided with valve seat, before the installation of described ball valve flows to be ball
Valve base sealing can also seal for ball rear valve base.
In said structure, by floating valve seat 4, dowel steel 6, force transmitting board 7, telescoping hydraulic cylinder 8, auxiliary valve body 2
Between be interconnected to constitute a floating valve seat driving means, stretch when telescoping hydraulic cylinder 8 produces under the effect of hydraulic coupling
Condense shifting time linkage force transmitting board 7 and dowel steel 6 floating valve seat 4 can be driven to make axial displacement, its axial stretching displacement
Distance can be regulated and controled by outer shifting positioning screw 16 and interior shifting positioning screw 17, due to have employed floating valve seat drive dress
Put and outer shifting positioning screw 16 and interior shifting positioning screw 17, it is possible to external to the floating in valve pocket at fixing ball valve
Seal pressure between valve seat 4 and spheroid 3 control effectively, and making fixing 90 ° of spinning movements of spherical ball valve is low moment of torsion
Operation, its seal form has the forced seal of stop valve character.
It is filled with thermal insulation inserts 18 between the endoporus and the cylindrical of auxiliary valve body fluid line 201 of force transmitting board 7,
The effect of its thermal insulation inserts 18 is the high and low to the liquid in telescoping hydraulic cylinder 8 and sealing of reduction pipeline medium temperature
The impact of element, the outside of telescoping hydraulic cylinder 8 cylinder body 801 has the temperature control chuck 803 sealing installation, and its temperature control presss from both sides
Possessing of set 803 can ensure that telescoping hydraulic cylinder 8 is in harsh pipeline medium temperature or harsh environment temperature effectively
Lower safe operation.
Also there is the R center of circle of Shuo Zhi center and U-lag 401 at same circumference and in uniformly on floating valve seat 4 shoulder
Spaced through hole 402, has the spiral thrust bar 10 of movable sealing function and may pass through its through hole 402 and extrude valve seat and fill out
Material gland 901 compresses valve seat filler 9, dowel steel filling tube 61 and spiral thrust bar filling tube 101 at auxiliary valve body 2
On same circumference in interval install, ball valve its valve seat filler 9 when closed in valve seat stuffing-box by spiral thrust bar 10
Thrust and the dual-pressure effect of fluid medium pressure be issued to seal reliably.
The upper end of valve body 1 is installed with fixing axle 11, its stretch in valve pocket the cylindrical of axle head with on spheroid 3
The endoporus in portion matches, and the endoporus on the cylindrical of upper fixing axle 11 end and spheroid 3 top to match can be major diameter
Coordinate, improve the cooperation intensity between spheroid 3 and upper fixing axle 11 and resist the intensity of high-pressure fluid, and effectively protecting
Protecting valve rod 12, make valve rod 12 not affected by pressure medium, the endoporus of upper fixing axle 11 is provided with valve rod 12, its valve
The side's of having tenon, big round bar, small round bar the most successively on bar 12 is coaxial, the shoulder between large and small round bar and on
Between the step end face of the endoporus of fixing axle 11, bearing 1100 is installed, had both prevented valve rod from blowing out, can also reduce simultaneously
Frictional force between the endoporus step end face of valve rod 12 and upper fixing axle 11, on the square tenon of its valve rod 12 end and spheroid 3
The square tongue-and-groove of end matches, and the lower end of valve body 1 is installed with lower fixing axle 13, and it stretches in valve pocket outside shaft end
Circle matches with the inner circle of spheroid 3 lower blind bore, the end of lower fixing axle 13 and the blind hole inner face of spheroid 3 bottom it
Between bearing 1300 is installed, lower fixing axle 13 not only can with the inner circle of spheroid 3 lower blind bore be major diameter coordinate, under
Fixing axle 13 also can the deadweight of support spheroid 3, make to coordinate between spheroid 3 and floating valve seat 4 sealing surface will not produce partially
Weight, the most also utilize bearing 1300 to reduce the frictional force between spheroid 3 and lower fixing axle 13, at lower fixing axle 13
Valve body 1 endoporus and spheroid 3 between position, gap there is radial direction through hole 1301, its radial direction through hole 1301 is again and mesopore
1302 constitute a drain outlet, and its drain outlet also communicates with sewage draining valve 14, and the dirt in its valve pocket can be by lower solid
The drain outlet of dead axle 13 outside sewage draining valve 14 discharges ball valve.
As it is shown in figure 1, be provided with auxiliary-seat 15 on valve gap 5, its auxiliary-seat 15 is in backside springs 151 power
Being close to spheroid under effect, it not only can strike off spheroid 3 surface and attach thing, also is able to make ball valve keep unnotched simultaneously
Overall runner.
As shown in Figure 1-2, the course of action when operation principle of the present invention and switch is: ball valve is by on/off, certainly
Dynamicization controls device 22 and starts hydraulic pump 19, makes the hydraulic pump 19 B room supercharging to telescoping hydraulic cylinder 8, now cylinder
Body 801 axially outwardly displacement also drives force transmitting board 7 and dowel steel 6 and floating valve seat 4 to synchronize axially outwardly displacement, makes to float
Dynamic valve seat 4 deviates from spheroid 3, and automatic control device 22 starts valve rod driving device 20 subsequently, drives valve rod 12 to link
Spheroid 3 half-twist, makes the runner hole of spheroid 3 connect with the runner hole of floating valve seat 4, Automated condtrol subsequently
Device 22 starts hydraulic pump 19, instructs the hydraulic pump 19 A room supercharging to telescoping hydraulic cylinder 8, makes the stream of spheroid 3
Hole, road reclines without meeting with the runner hole of floating valve seat 4.
As shown in Figure 1-2, ball valve is started hydraulic pump 19 by on-off, automatic control device 22, is made hydraulic pump
The B room supercharging of 19 pairs of telescoping hydraulic cylinders 8, now cylinder body 801 axially outwardly displacement also drives force transmitting board 7 and power transmission
Bar 6 and floating valve seat 4 synchronize axially outwardly displacement, make floating valve seat 4 deviate from spheroid 3, subsequently automatic control device
22 start valve rod driving device 20, drive valve rod 12 to link spheroid 3 half-twist, make sphere and the floating of spheroid 3
The runner hole of valve seat 4 is relative, and automatic control device 22 starts hydraulic pump 19 subsequently, and instruction hydraulic pump 19 is to flexible
The A room supercharging of formula hydraulic cylinder 8, makes to produce seal pressure between floating valve seat 4 and spheroid 3 and reaches effectively to seal.
Described control device 22 is made up of Automated condtrol components and parts such as PLC, floating valve seat driving means and valve
The operation program that is mutually related between rod driving device 20 can be completed by automatic control device 22.
Claims (9)
1. low moment of torsion forced seal formula fixes a spherical ball valve, and including valve body (1), described valve body (1) side is solid
Dingan County is equipped with auxiliary valve body (2), and opposite side is installed with valve gap (5), and the upper end of valve body (1) is provided with solid
Dead axle (11) and the circular hole of spheroid (3) upper end being placed in valve pocket match, and the lower end of valve body (1) is provided with down
The circular hole of fixing axle (13) and spheroid (3) lower end matches, valve rod (12) through among upper fixing axle (11),
Being equipped with valve stem packing (21) between upper fixing axle (11) and valve rod (12), floating valve seat (4) is placed in spheroid (3)
Outside, its sealing surface and spheroid (3) are affixed, and be equipped with valve seat and fill out between floating valve seat (4) and valve body (1)
Material (9), it also includes by floating valve seat (4), dowel steel (6), force transmitting board (7), telescoping hydraulic cylinder (8) institute
Floating valve seat driving means, valve rod driving device (20) and control device (22) constituted, it is characterised in that:
There is the shoulder of a major diameter, on described floating valve seat (4) on the same circumference of the edge of its shoulder
It is machined with several, in evenly distributed axial U-lag (401), its U-lag, (401) is separately installed with biography
Power bar (6), described dowel steel (6) coaxial on be respectively provided with from inside to outside interior big footpath round bar part (601),
Cannelure (602), outer big footpath round bar part (603), thin round bar part (604) and screw portion (605), its
Cannelure (602) inserts among floating valve seat shoulder U-lag (401), two ring-type footpaths of cannelure (602)
Two lateral surface to medial surface and floating valve seat shoulder U-lag (401) match, described dowel steel (6)
The dowel steel filling tube (61) that is installed on static seal respectively on auxiliary valve body (2) of thin round bar part (604) with
And dowel steel filler (62), dowel steel screw thread gland nut (63) mesopore wherein put matches, and by passing
Power bar screw thread gland nut (63) compresses dowel steel filler (62), makes dowel steel (6) and dowel steel filler (62)
Possessing movable sealing performance, the screw portion (605) of described dowel steel (6) is outer at ball valve body and force transmitting board (7) is solid
Fixed connection, the endoporus of described force transmitting board (7) and the cylindrical of auxiliary valve body fluid line (201) are matched in clearance, institute
Stating and be the most uniformly provided with several telescoping hydraulic cylinders (8) on the same circumference in force transmitting board (7) outside, it is telescopic
The cylinder body (801) of hydraulic cylinder (8) is connected in fixing with force transmitting board (7), the piston rod in telescoping hydraulic cylinder (8)
(802) it is connected in fixing with auxiliary valve body (2), the hydraulic fluid conduit of telescoping hydraulic cylinder (8) and hydraulic pump (19)
It is connected, is provided with outside valve seat between described force transmitting board (7) and auxiliary valve body (2) and moves positioning screw (16), outer shifting
The side plane pulling bodyside plan and a guide thimble (161) of positioning screw (16) is affixed, its guide thimble
(161) fixed by screw (162), in described auxiliary valve body (2) is provided with valve seat, moved positioning screw (17).
One the most according to claim 1 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: also there is the center of circle of several the centers of circle and U-lag (401) at same circumference also on floating valve seat (4) shoulder
The through hole (402) of arrangement in uniform intervals, spiral thrust bar (10) may pass through its through hole (402) and valve seat filler
Gland (901) connects.
One the most according to claim 2 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: dowel steel filling tube (61) and spiral thrust bar filling tube (101) on the same circumference of auxiliary valve body (2) in
Interval is installed.
One the most according to claim 1 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: the upper end of valve body (1) is installed with upper fixing axle (11), its cylindrical stretching into axle head in valve pocket and ball
The endoporus on body (3) top matches, and the cylindrical of upper fixing axle (11) end and the endoporus phase on spheroid (3) top
Coordinate.
One the most according to claim 4 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: the endoporus above fixing axle (11) is provided with valve rod (12), has the most successively on its valve rod (12) is coaxial
The side's of having tenon, big round bar, small round bar, the shoulder between big round bar and small round bar relative on fix axle (11)
Endoporus step end face between bearing (1100) is installed, the square tenon of its valve rod (12) end and spheroid (3)
The square tongue-and-groove of upper end matches.
One the most according to claim 1 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: the lower end of valve body (1) is installed with lower fixing axle (13), its stretch in valve pocket the cylindrical of shaft end with
The inner circle of spheroid (3) lower blind bore matches, in the end of lower fixing axle (13) and the blind hole of spheroid (3) bottom
Bearing (1300) is installed, between end face between valve body (1) endoporus and spheroid (3) of lower fixing axle (13)
Position, gap has radial direction through hole (1301), and its radial direction through hole (1301) constitutes a blowdown with mesopore (1302) again
Passage, its drain outlet also communicates with sewage draining valve (14).
One the most according to claim 1 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: it is filled with thermal insulation inserts between at the endoporus and the cylindrical of auxiliary valve body fluid line (201) of force transmitting board (7)
(18), cylinder body (801) outside of telescoping hydraulic cylinder (8) is provided with temperature control chuck (803).
One the most according to claim 1 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
In: described control device (22) is made up of PLC Automated condtrol components and parts, floating valve seat driving means
With the operation program that is mutually related between valve rod driving device (20) is completed by controlling device (22).
One the most according to claim 1 low moment of torsion forced seal formula fixes spherical ball valve, and its feature exists
Before the installation of: described ball valve flows to as ball, valve base sealing or ball rear valve base seal.
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| CN201410226370.7A CN104295762B (en) | 2014-05-20 | 2014-05-20 | Low-torque enforced sealing type fixing ball valve |
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| CN201410226370.7A CN104295762B (en) | 2014-05-20 | 2014-05-20 | Low-torque enforced sealing type fixing ball valve |
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| CN104295762B true CN104295762B (en) | 2017-01-11 |
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| CN106678410B (en) * | 2017-01-17 | 2024-01-30 | 科林蓝泰环境科技(长春)有限公司 | Self-cleaning fluid flow direction control valve |
| CN106996467A (en) * | 2017-04-24 | 2017-08-01 | 浙江理工大学 | T-shaped tee ball valve with blowdown |
| CN110173575A (en) * | 2019-04-23 | 2019-08-27 | 亚登阀门管件有限公司 | A kind of valve seat can float the ball valve of adjustment |
| CN113236851B (en) * | 2021-05-11 | 2023-01-10 | 华英阀业有限公司 | Flange connection soft sealing ball valve with pressure detection and liquid leakage prevention functions |
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| CN104295762A (en) | 2015-01-21 |
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