CN2898479Y - Automatic hydraulically-controlled semispherical butterfly valve - Google Patents

Automatic hydraulically-controlled semispherical butterfly valve Download PDF

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Publication number
CN2898479Y
CN2898479Y CN 200520052979 CN200520052979U CN2898479Y CN 2898479 Y CN2898479 Y CN 2898479Y CN 200520052979 CN200520052979 CN 200520052979 CN 200520052979 U CN200520052979 U CN 200520052979U CN 2898479 Y CN2898479 Y CN 2898479Y
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CN
China
Prior art keywords
valve
valve plate
valve body
shaft
angle
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Expired - Fee Related
Application number
CN 200520052979
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Chinese (zh)
Inventor
廖灿长
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Chen Dianliang
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Chen Dianliang
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Priority to CN 200520052979 priority Critical patent/CN2898479Y/en
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Publication of CN2898479Y publication Critical patent/CN2898479Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

An automatic hydraulically-controlled semispherical butterfly valve, is characterized in that: a valve plate (2) fixed in a valve body (1) is connected with a valve shaft (3) through a taper blot and connected with a heavy hammer (4). The valve shaft (3) is connected with a servomotor (6) through a bond, and a hydraulic cylinder (10) located on the upper right side of the valve body (1) is connected with a bracket (8) fixed on the valve body (1)through a rotary shaft (9). The hydraulic cylinder (10) will rotate for a certain angle on a bracket, a rotary shaft lever (7) is connected with a force transfer device (5) through a shaft. The force transfer device (5) is rotated around the shaft of the valve body (1), with a shape of Y, multi-forks, or straight line, rotating around the valve shaft (3), restricting the opening degree of the valve plate when opening and the breadth of the flow discharging seam when the valve is closing. Restricting the opening and closing degree of the valve plate is realized by restraining the angular travel of the servomotor (6) through the force transfer device (5), with the angle from 45 degrees to 180 degrees. The utility model has the advantages of cutting off exhausting impurities, automatically in alignment with the center and compensating abrasion, minimal coefficient of fluid resistance, holding the physical status of fluid, adapting to the wide range of the pressure temperature level, and easy for operation and repair. The pump controlling valve is of saving energy and resources, extensive application, and leading performance in comprehensive technology.

Description

Full-automatic hydraulic control hemisphere butterfly valve
One, technical field
The utility model relates to a kind of valve that is installed on the liquid pump outlet, particularly a kind of full-automatic hydraulic control hemisphere butterfly valve.
Two, technical background
When centrifugal, mixed-flow liquid pump starts, in motor, produce huge inrush current, very easily burn motor.Past mainly adopts large-scale resistance heap, frequency conversion etc. to reduce the device of electric currents, and investment is big, the occupation of land space is big, energy loss is big.Centrifugal, mixed-flow and axial flow liquid pump are when termination of pumping, because backwater can produce the huge impact water hammer, the very rapid breaking-up pump housing, bottom valve cause whole system to lose efficacy.Therefore it is extremely necessary replacing the novel valve of reduced-voltage starting device, elimination water-hammer, safety check or bottom valve with a kind of valve.
The control valve for water pump of fluid-controlled cut-off valve type has light-load starting, eliminates the function of water bell, non-return, but through after a while use, exist resistance coefficient big, can not produce large bore valves and not be suitable for shortcoming such as axial-flow pump.
Three, summary of the invention
The purpose of this utility model be manufacture and design a kind ofly be used for centrifugal, mixed-flow and the outlet of axial flow liquid pump, have make the pump light-load starting, eliminate the backwater water hammer, non-return, producible inside nominal diameter is big, flow resistance coefficient is little, the full-automatic hydraulic control hemisphere butterfly valve of the high many-sided performance of pressure rating.The technological scheme of this valve is achieved in that main body is made up of valve body, valve plate etc.Valve plate is in the middle of the valve body, and by taper pin, connection valve shaft, valve shaft links to each other with servomotor by key.Oil hydraulic cylinder is positioned at the upper right side of valve body, and by rotating shaft chord frame, support is fixed on the valve body, and cylinder body can turn an angle on support.The oil hydraulic cylinder axostylus axostyle links to each other with force transmitters by axle, and force transmitters is around the rotatable several angle of valve shaft.When liquid pump starts, pressured fluid is divided into two-way after being entered by valve inlet, valve plate is backed down in main road attempt, but servomotor pushed down by force transmitters, and valve plate can not be opened, another road enters pilot line promotion hydraulic piston and moves downwards, drive force transmitters and slowly decontrol servomotor, valve plate is slowly opened, motor operating current is slowly strengthened, reach the purpose of light-load starting, time of opening and speed are regulated by the ball valve on the pilot line.When being used for axial-flow pump, pump one starts, and valve plate is opened at once, realizes light-load starting.This valve entered " quick closing valve-Slow Close " control program automatically when pump shut down, and screwed off at the valve plate of turtleback shape in a flash, closed 80%~98%.Block most of main backwater, another road of backwater with hydraulic cylinder piston jack-up slowly upwards, drives force transmitters by pilot line, servomotor rotates, and makes valve plate forward closed position to, by the long-time pressure release of little backwater, realizes eliminating the purpose of water hammer, non-return.The time of Slow Close and speed are regulated by the ball valve of pilot line.The sealing surface of valve body is high hard annular conical surface, sealing surface of valve plate is high hard sphere face, valve body, valve plate closely make contact to linear sealing, during sealing surface and valve body medial axis at angle, the advantage that adopts this ring awl-ball face sealing be can automatic centering the heart, automatically compensate the hollow abrasion of ball, cut off and arrange impurity.In the gravity of the eccentric gravity of the valve plate of turtleback shape, weight, reverse backwater effect power, can freely fall several angle under any power effect during valve closing and close 80%~98%.The inlet/outlet of hydraulic control cylinder has ball valve, filter and check valve in parallel by controlling the inlet/outlet direction that other pipe connects valve body respectively on the pilot line, the importer to the other pipe of control on the pressure control pilot valve is arranged.Regulate the water inlet flow rate of controlling in the other pipe by the ball valve of regulating on the other pipe of control,, reach the open and close speed and the time of control valve valve plate with the forward and reverse travelling speed of control hydraulic control cylinder inner carrier.By regulating the pressure of opening that pilot valve comes control valve.During the other water inlet tube of one control, the water outlet of the other pipe of another control, hydraulic control cylinder power source is to guarantee hydraulic control cylinder mass of medium from medium in the valve, on two other pipe pipelines filter is housed all.Therefore the purpose that has had both the other pipeline of back flush simultaneously.Force transmitters is one to have the Y type part of several angle, and around the valve shaft motion, an end links to each other with the oil hydraulic cylinder axle by axle, flow discharging seam width when valve plate open degree that the other end band is pitched when opening in order to limiter valve and valve closing.Restriction valve plate open and close degree is to realize that by the angle stroke of force transmitters restriction servomotor its angle is 45 °~180 °.The eccentric distance of the axis of valve plate center and valve body is 0~30%DN, and the eccentric distance of valve plate (2) center and sealing surface center line is (valve shaft radius+sealing surface of valve plate cross-sectional dimension+2~50)/2.
This valve has the following advantages:
1, operation power is taken from medium in the valve, does not need external power.2, during valve opening in the valve pressure medium need reach the pressure of adjusting in advance and just can open, and open by the time speed of adjusting in advance, realize the light-load starting of pump.3, turn-off 80%~98% current during valve closing rapidly, then by time of adjusting in advance and speed to 100% contract fully, to eliminate backwater water hammer and non-return.4, possesses other pipe backwashing function.5, fluid resistance is little, and the resistance coefficient of this valve is 0.5~0.8.6, valve plate is a streamline, if fluid is a laminar flow when advancing valve, still can make fluid keep laminar flow substantially when going out valve, thereby applicable to some very specific operating mode.7, valve body sealing surface is that conical surface, sealing surface of valve plate are sphere, and makes for high hard material, can cut off, pulverize, arrange that various thread, granular suspend, half suspended impurity; Can align the center automatically; Another characteristics of eccentric sphere are especially hollow shape wearing and tearing of ball of compensate for wear automatically.8, to overlap area very little in sealing, makes full use of that whole energy of medium promote the valve plates sealing in the valve, and the sealing energy is huge, thereby seal pressure is huge especially, makes zero by zero, very stiff and demanding sealing is able to smooth realization.9, the valve macrostructure is an eccentric-butterfly-valve, and the turtleback shape valve board structure can be high pressure resistant and that wall thickness is reduced to is minimum, thereby overcome the characteristics of the hard to bear high pressure of butterfly valve, extended its pressure range greatly; Sealing surface of valve plate shape and rotary motion trace such as semispherical valve, and form linear sealing, but it is big to have overcome the semispherical valve duty, the shortcoming that sealing surface is easy to wear; Detect valve plate sealing sphere from Way out and close more that area is more little, to open area more big more as wedge action valve, overcome the shortcoming that the gate valve duty is big, sealing surface wear is big equally; Interior valve plate of initial time overlaps the switch motion of valve axial-movement such as stop valve when last blink when closing and unlatching, but has overcome the shortcoming that the stop valve duty is big, switch moment is big; Therefore this valve combines whole advantages of three eccentric high hard seal butterfly valves, semispherical valve, wedge action valve, stop valve, and has abandoned its all defect.
Four, description of drawings
Fig. 1 is the schematic representation of the angular dependence of the off-centre relation in valve body 1 center line and valve plate 2 motion axle center and sealing surface;
Fig. 2 for pump when out of service in a flash valve plate 2 fall down automatically and close 80%~98%, stop the schematic representation of most of backwater;
Fig. 3 becomes the linear sealing schematic representation for the annular conical surface of valve body 1 and valve plate 2 sealing surfaces with sphere;
Fig. 4 is for limiting the schematic representation of the angle stroke of servomotors 6 for Y shape force transmitters 5;
Fig. 5 is a structural representation of the present utility model.
Embodiment
Shown in Fig. 1,2,3,4,5, valve plate 2 is in the middle of the valve body 1, connects valve shaft 3 by taper pin, valve shaft links to each other with servomotor 6 by key, and oil hydraulic cylinder 10 is positioned at the upper right side of valve body 1, links to each other with support 8 by rotating shaft 9, support 8 is fixed on the valve body, and cylinder body can turn an angle on support.Oil hydraulic cylinder axostylus axostyle 7 links to each other with force transmitters 5 by axle, and force transmitters 5 is around the rotatable several angle of valve shaft.When liquid pump starts, pressured fluid is divided into two-way after being entered by valve inlet, valve plate 2 is backed down in main road attempt, but servomotor 6 pushed down by force transmitters 5, and valve plate 2 can not be opened, another road enters pilot line 11 promotion hydraulic pistons and moves downwards, drive force transmitters 5 and slowly decontrol servomotor 6, valve plate is slowly opened, motor operating current is slowly strengthened, reach the purpose of light-load starting, time of opening and speed are regulated by the ball valve on the pilot line.This valve entered " quick closing valve one Slow Close " control program automatically when pump shut down, screw off at turtleback shape valve plate 2 in a flash, close 80%-98%, block most of main backwater, another road of backwater with hydraulic cylinder piston jack-up slowly upwards, drives force transmitters 5 by pilot line, servomotor 6 rotates, and makes valve plate forward closed position to, by the long-time pressure release of little backwater, realize eliminating the purpose of water hammer, non-return.Shown in Fig. 1,3, the sealing surface of valve body 1 is high hard annular conical surface, sealing surface of valve plate is high hard sphere face, valve body 1, valve plate 2 closely make contact to linear sealing, sealing surface and valve body medial axis can freely fall several angle during valve closing and close 80%-98% at angle under the effect of the gravity of valve plate 2 eccentric centers of gravity, weight 4, reverse backwater effect power; The import and export of oil hydraulic cylinder have ball valve by controlling the import and export direction that other pipe connects valve body respectively on the pilot line, filter and check valve in parallel, the importer to the other pipe of control on the pressure control pilot valve is arranged.Regulate the water inlet flow rate of controlling in the other pipe by the ball valve of regulating on the other pipe of control,, reach the open and close speed and the time of control valve with the forward and reverse travelling speed of control piston in hydraulic cylinder.By regulating the pressure of opening that pilot valve comes control valve.During the other water inlet tube of one control, the water outlet of the other pipe of another control.
This valve is loaded on delivery side of pump, when centrifugal pump, when mixed flow pump starts, pressured fluid enters in the valve body 1 from left, drive valve plate 2 is slowly opened (under the acting in conjunction of oil hydraulic cylinder 10-oil hydraulic cylinder axostylus axostyle 7-servomotor 6-force transmitters 5), the inrush current of pump is slowly increased, reach the purpose of light-load starting.When axial-flow pump started, valve was opened rapidly, reduced inrush current.
When pump is out of service, backwater oppositely rushes at valve rapidly in the pipe, valve plate 2 falls rapidly, block the backwater of 80%-98%, stay area sluicing backwater surge pressure after a period of time of 2%-20%, under the acting in conjunction of oil hydraulic cylinder 10-cylinder pressure axostylus axostyle 7-servomotor 6-force transmitters 5, final valve plate 2 Close Alls reach the purpose of non-return.

Claims (2)

1, a kind of full-automatic hydraulic control hemisphere butterfly valve, it is characterized in that: valve plate (2) is in the middle of the valve body (1), connect valve shaft (3) by taper pin, link to each other with weight (4), valve shaft (3) links to each other with servomotor (6) by key, oil hydraulic cylinder (10) is positioned at the upper right side of valve body (1), connect support (8) by rotating shaft (9), support (8) is fixed on the valve body (1), oil hydraulic cylinder (10) can turn an angle on support, oil hydraulic cylinder axostylus axostyle (7) links to each other with force transmitters (5) by axle, force transmitters (5) is rotated around the axle of valve body (1), force transmitters (5) is one to have Y type or the multi-branched type or the yi word pattern of several angle, around valve shaft (3) motion, flow discharging seam width when valve plate open degree when limiter valve is opened and valve closing, restriction valve plate switching degree is to realize that by the angle stroke of force transmitters (5) restriction servomotor (6) its angle is 45 ° ~ 180 °.
2, full-automatic hydraulic control hemisphere butterfly valve according to claim 1, it is characterized in that: the sealing surface of valve body (1) is high hard annular conical surface, valve plate (2) sealing surface is high hard sphere face, the vertical line of valve plate during sealing (2) and valve body (1) medial axis at an angle, this angle is 0 ° ~ 45 °, valve plate (2) is a turtleback shape, the eccentric distance of the axis of valve plate (2) center and valve body (1) is 0 ~ 30% inside nominal diameter, and the eccentric distance of valve plate (2) center and sealing surface center line is (valve shaft radius+sealing surface of valve plate cross-sectional dimension+2 ~ 50)/2.
CN 200520052979 2005-12-31 2005-12-31 Automatic hydraulically-controlled semispherical butterfly valve Expired - Fee Related CN2898479Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520052979 CN2898479Y (en) 2005-12-31 2005-12-31 Automatic hydraulically-controlled semispherical butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520052979 CN2898479Y (en) 2005-12-31 2005-12-31 Automatic hydraulically-controlled semispherical butterfly valve

Publications (1)

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CN2898479Y true CN2898479Y (en) 2007-05-09

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102840367A (en) * 2012-09-25 2012-12-26 于乃富 Booster automatic waterflow overspeed resistance increasing device
CN105705847A (en) * 2013-09-04 2016-06-22 Bs&B 创新有限公司 Rotatable valve assembly with plug seal
CN108533823A (en) * 2018-03-21 2018-09-14 武汉大禹阀门股份有限公司 A kind of hydraulic control ball valve system and control method
CN112855997A (en) * 2020-08-24 2021-05-28 郑州海世鸿阀门有限公司 External self-control check valve
CN114704650A (en) * 2022-04-01 2022-07-05 特技阀门集团有限公司 Hydraulic control non-return butterfly valve for eliminating water hammer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102840367A (en) * 2012-09-25 2012-12-26 于乃富 Booster automatic waterflow overspeed resistance increasing device
CN105705847A (en) * 2013-09-04 2016-06-22 Bs&B 创新有限公司 Rotatable valve assembly with plug seal
CN108533823A (en) * 2018-03-21 2018-09-14 武汉大禹阀门股份有限公司 A kind of hydraulic control ball valve system and control method
CN108533823B (en) * 2018-03-21 2023-12-05 武汉大禹阀门股份有限公司 Hydraulic control ball valve system and control method
CN112855997A (en) * 2020-08-24 2021-05-28 郑州海世鸿阀门有限公司 External self-control check valve
CN112855997B (en) * 2020-08-24 2022-06-10 郑州海世鸿阀门有限公司 External self-control check valve
CN114704650A (en) * 2022-04-01 2022-07-05 特技阀门集团有限公司 Hydraulic control non-return butterfly valve for eliminating water hammer
CN114704650B (en) * 2022-04-01 2023-12-22 特技阀门集团有限公司 Hydraulic control check butterfly valve for eliminating water hammer

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070509

Termination date: 20100201