CN116972192A - Butterfly valve door in double-drive ball - Google Patents

Butterfly valve door in double-drive ball Download PDF

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Publication number
CN116972192A
CN116972192A CN202311187922.3A CN202311187922A CN116972192A CN 116972192 A CN116972192 A CN 116972192A CN 202311187922 A CN202311187922 A CN 202311187922A CN 116972192 A CN116972192 A CN 116972192A
Authority
CN
China
Prior art keywords
valve
valve body
butterfly
drive
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202311187922.3A
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Chinese (zh)
Other versions
CN116972192B (en
Inventor
冯涛
强红宾
陈双河
张伟恒
郭晓平
刘凯磊
王铁洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Chenggong Valve Technology Co ltd
Original Assignee
Jiangsu Chenggong Valve Technology Co ltd
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Publication date
Application filed by Jiangsu Chenggong Valve Technology Co ltd filed Critical Jiangsu Chenggong Valve Technology Co ltd
Priority to CN202311187922.3A priority Critical patent/CN116972192B/en
Publication of CN116972192A publication Critical patent/CN116972192A/en
Application granted granted Critical
Publication of CN116972192B publication Critical patent/CN116972192B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2007—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member specially adapted operating means therefor
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2014—Shaping of the valve member
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2021—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member with a plurality of 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2042—Special features or arrangements of the sealing
    • F16K1/205—Special features or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • 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
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • 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
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
    • 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
    • F16K5/0647—Spindles or actuating means
    • 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
    • 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
    • F16K5/10—Means for additional adjustment of the rate of flow

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

The application relates to a butterfly valve in a double-drive ball, which belongs to the technical field of valves and comprises a middle valve body and side valve bodies arranged at two ends of the middle valve body, wherein a sealing ring is arranged at one end, close to the middle valve body, in the side valve body, a valve core is arranged in the middle valve body, a control channel for medium circulation is arranged on the valve core, a spherical sealing surface is also arranged on the valve core, the spherical sealing surface is positioned at two circumferential sides of the control channel, the spherical sealing surface is abutted against the corresponding sealing ring, a valve rod is arranged on the valve core, an external driving mechanism for driving the valve rod to rotate is arranged on the middle valve body, flow dividing holes are arranged at two circumferential sides of the valve core, one end of each flow dividing hole is communicated with the control channel, the other end of each flow dividing hole is communicated with the corresponding spherical sealing surface, a butterfly plate is arranged in each flow dividing hole, and an internal driving mechanism for driving the butterfly plate to turn is arranged on the valve core. The application can reduce the cutting stress on the valve rod when the valve is opened, and is beneficial to reducing the fluid pressure on the valve core when the valve is closed, thereby improving the convenience of opening and closing the valve.

Description

Butterfly valve door in double-drive ball
Technical Field
The application relates to the field of valves, in particular to a butterfly valve in a double-drive ball.
Background
The energy requirements of China such as petroleum, natural gas and the like are very large, and the requirements are increasing in the years. The transportation mode of the current energy source is mainly pipeline transportation, and the valve plays an important role in long-distance pipeline transportation of oil, gas, coal and other resources. In the opening and closing process of the valve, the opening and closing speed of the valve is slow due to the pressure of gas and liquid, and even the leakage problem caused by the loose sealing can be caused. Ball valves are widely used in various fields such as energy transportation by virtue of the advantages of wear resistance, good sealing performance, light switch, long service life and the like.
The ball valve is characterized in that a valve core of the ball valve is generally made of a metal sphere, a through hole for medium circulation is formed in the valve core, the axial direction of the through hole is changed by controlling the valve core to rotate, and when the axial direction of the through hole is consistent with the length direction of the ball valve, the valve is completely opened; when the axial direction of the through hole is perpendicular to the length direction of the ball valve, the valve is completely closed; of course, the flow rate may also be regulated by rotating the valve spool.
However, existing ball valves have the following problems in use: the valve rod receives great shear stress when the initial position of valve opening, and then produces great frictional force, causes the problem of being difficult to open the valve.
Disclosure of Invention
In order to reduce the shear stress on a valve rod when the valve is opened and improve the convenience of opening the valve, the application provides a butterfly valve in a double-driving ball.
The application provides a butterfly valve in a double-drive ball, which adopts the following technical scheme:
the utility model provides a butterfly valve door in two drive balls, includes middle valve body and locates the side valve body at middle valve body both ends, the one end that is close to middle valve body in the side valve body is equipped with the sealing washer, be equipped with the case in the middle valve body, be equipped with the control channel that supplies the medium to circulate on the case, still be equipped with spherical sealing face on the case, just spherical sealing face is located the circumference both sides of control channel, spherical sealing face and the sealing washer butt that corresponds, be equipped with the valve rod on the case, be equipped with the rotatory outer mechanism that drives of drive valve rod on the middle valve body, the circumference both sides of case are equipped with the branch flow hole, the one end and the control channel intercommunication of branch flow hole, the other end and the spherical sealing face intercommunication that corresponds are equipped with the butterfly plate in the branch flow hole, be equipped with the internal drive mechanism that drives the butterfly plate upset on the case.
Through adopting above-mentioned technical scheme, when the valve was opened, at first interior driving mechanism starts, drives the butterfly plate upset, and outer driving mechanism starts afterwards, drives the valve rod and rotates 90 degrees, accomplishes the valve operation of opening. The butterfly plate is turned over to open the flow dividing hole, so that a bypass branch is provided for the middle valve body with high pressure and large drift diameter to release pressure, the tangential stress of the valve rod when the valve is at the initial opening position is reduced, and the convenience of valve opening is further reduced. In addition, when the valve is closed, the external driving mechanism is started at first, the valve rod is driven to reversely rotate for 90 degrees, after the spherical sealing surface is abutted with the sealing ring, the internal driving mechanism is started again, the butterfly plate is reversely turned and reset, and the valve closing operation is completed. The valve core is in an open state in the closing process, so that the pressure of the last position of the valve when the valve is closed can be reduced, the convenience of closing the valve is improved, and finally, the acting force of a medium born by the butterfly plate when the butterfly plate is turned over in the final stage of closing the valve is also smaller, the valve core is turned over more conveniently, and the effect of quick sealing can be achieved.
Optionally, the case includes the connecting seat and articulates in the ball lamella at connecting seat both ends, the lower extreme of connecting seat is equipped with the dwang, the dwang rotates to be connected on middle valve body, the lower extreme of valve rod is equipped with the basic block, the both ends of basic block are equipped with the connecting rod, the one end and the basic block of connecting rod are articulated, and the other end is articulated with the one end that the connecting block was kept away from to adjacent ball lamella, spherical sealing surface is located one side that two ball lamella kept away from each other, outer driving mechanism still can be used to drive the valve rod and vertically go up and down.
By adopting the technical scheme, when the valve rod is driven by the external driving mechanism to move upwards, the valve rod drives the base block to ascend, and the base block can enable the two spherical petals to be close and contracted through the connecting rod; when the valve rod is driven by the external driving mechanism to move downwards, the valve rod drives the base block to descend, and the base block can enable the two ball petals to be outwards spread through the connecting rod; when the external driving mechanism drives the valve rod to rotate, the valve rod drives the base block to rotate, and the base block can drive the two spherical petals to rotate through the connecting rod. When the valve is opened, the valve rod can be driven to ascend firstly and then rotate or rotate while ascending through the external driving mechanism, so that the two spherical petals are driven to sequentially act in a shrinkage and then rotation mode or rotate while shrinking; when the valve is closed, the valve rod can be driven to rotate and then descend through the external driving mechanism or rotate while descending, so that the two ball petals are driven to rotate and then prop open sequentially or prop open gradually while rotating; in the opening and closing process of the valve, when the ball valve rotates, the ball valve and the sealing ring are separated from each other or have a tendency of mutual separation, so that the possibility of contact between the spherical sealing surface and the sealing ring in the opening and closing process is reduced, the abrasion of the spherical sealing surface and the sealing ring in the opening and closing process of the valve is reduced, and the service life of the valve is prolonged.
Optionally, the internal driving mechanism includes the lower bevel gear of rotating along vertical direction and connecting on the connecting seat, it is connected with two horizontal transmission shafts to rotate along self length direction on the connecting seat, two horizontal transmission shafts symmetry sets up in the both sides of lower bevel gear, two the one end that horizontal transmission shafts are close to each other is equipped with the bevel gear, lower bevel gear meshes with two bevel gears simultaneously, the one end that horizontal transmission shafts kept away from corresponding upper bevel gear is connected with oblique transmission shaft through universal hinge respectively, vertical being provided with the pivot on the butterfly plate, the lower extreme of pivot is kept away from the one end of horizontal transmission shaft through universal hinge with adjacent corresponding oblique transmission shaft and is connected, be equipped with on the ball valve and be used for dodging oblique transmission shaft dodging groove, be equipped with the first drive assembly of drive lower bevel gear pivoted on the intermediate valve body.
Through adopting above-mentioned technical scheme, when first drive assembly starts, drive down bevel gear and rotate, lower bevel gear rotates and drives two upper bevel gears and rotate, and upper bevel gear rotates and drives corresponding horizontal transmission shaft and rotate, and horizontal transmission shaft rotates and drives corresponding oblique transmission shaft and rotate, and oblique transmission shaft rotates and drives corresponding tilting shaft and rotate, and tilting shaft rotates and drives the butterfly plate and rotate, realizes the purpose of drive butterfly plate upset. According to the concrete composition structure of the valve core, the whole structure of the internal driving mechanism is arranged in the valve core through a series of transmission mechanisms, so that the movement of the valve core is not blocked while the internal driving mechanism moves, the extra space occupied by the internal driving structure in the middle valve body is reduced, and the smoothness of medium circulation during valve opening is improved. In addition, through the rotatory effect of lower bevel gear and last bevel gear meshing and universal hinge, realize driven effect to can realize carrying out synchronous control's purpose to two butterfly plates, help reducing the loaded down with trivial details degree of control, improve the control efficiency of butterfly plate upset.
Optionally, be equipped with the mounting bracket on the middle valve body, first drive assembly including locate the first motor on the mounting bracket and with the coaxial fixed first driving gear of output of first motor, lower bevel gear's lower extreme coaxial fixed with lower transmission shaft, the dwang is hollow pole, dwang and middle valve body are worn out to the lower extreme of lower transmission shaft just the lower extreme coaxial fixed with first driven gear of lower transmission shaft, first driven gear and first driving gear meshing.
Through adopting above-mentioned technical scheme, when first motor rotates, drive first driving gear and rotate, first driving gear rotates and drives first driven gear and rotate, and first driven gear rotates and drives the lower transmission shaft and rotate, and then realizes the pivoted purpose of bevel gear under the drive. The first motor is used as a driving source, so that synchronous overturning control of the two butterfly plates is realized, and the number of the driving sources is reduced.
Optionally, one side edge of butterfly plate is equipped with annular mounting groove, be equipped with the seal lip in the annular mounting groove, the seal lip is elastic component, can dismantle on the butterfly plate and be connected with spacing retaining ring, one side and the annular mounting groove diapire butt of seal lip, opposite side and spacing retaining ring butt, the global lateral wall of seal lip and the pore wall butt of branch flow hole, be provided with a plurality of dividing grooves along the thickness direction interval of seal lip on the global lateral wall of seal lip.
By adopting the technical scheme, when the turnover shaft rotates, the sealing lip is forced to elastically deform, so that the butterfly plate can be turned in the flow distribution hole conveniently; when the butterfly plate is in a closed state, the sealing lip is reset and is abutted with the hole wall of the flow dividing hole, so that the possibility that the medium overflows from a gap between the butterfly plate and the flow dividing hole is reduced. Through the setting of dividing groove for big and thick sealing lip changes a plurality of closely arranged little and thin sealing member, when guaranteeing that sealing lip has good sealed effect, can reduce the required moment of torsion when overturning the butterfly plate by a wide margin, reduces the opening and closing degree of difficulty of butterfly plate.
Optionally, the outer valve body of driving the mechanism including locating middle valve body upper end, it is connected with the rotation nut to go up the valve body internal rotation, the global lateral wall upper end of valve rod is equipped with the screw thread section, the rotation nut cover is located on the screw thread section and with screw thread section threaded connection, be equipped with the guide way on the lateral wall of last valve body, the guide way is the trend change that rises gradually or descend gradually just the angular displacement variable of guide way start and end position is not less than 90, be equipped with the guide arm with the guide way looks adaptation on the valve rod, in the guide way was located to the guide arm, be equipped with the drive on the upper valve body and rotate nut pivoted second drive assembly.
Through adopting above-mentioned technical scheme, when the second drive assembly drive rotates the nut and rotates, through the setting of screw thread section, can make the valve rod up-and-down motion, and the guide arm on the valve rod can make the valve rod carry out 90 degrees rotations in the restriction of guide way under the lift to make two spherical petals carry out 90 degrees rotatory actions in shrink gradually or open, improve the control efficiency to the spherical petal motion, thereby improve the switching efficiency that the valve opened and close.
Optionally, the second driving assembly includes a second motor disposed on the upper valve body and a second driving gear disposed on an output end of the second motor, a second driven gear is coaxially fixed on an outer side of the rotating nut, and the second driven gear is meshed with the second driving gear.
Through adopting above-mentioned technical scheme, when the second motor rotates, drive second driving gear and rotate, second driving gear rotates and drives the second driven gear and rotate, and the second driven gear rotates and drives the rotation nut and rotate. Through the positive and negative rotation switching of the second motor, the positive and negative rotation switching of the rotating nut is realized, so that the switching of the up-and-down motion of the driving valve rod is realized, the switching of the opening and closing of the valve is realized, the degree of automation of the opening and closing of the valve is improved, and the manual labor is reduced.
Optionally, the intelligent control device further comprises a controller, a first contactor and a second contactor, wherein the first contactor and the second contactor are connected with the controller, the first contactor is connected with a first motor, the second contactor is connected with a second motor, the first motor is connected with a first encoder, the second motor is connected with a second encoder, and the first encoder and the second encoder are respectively and electrically connected with the controller.
By adopting the technical scheme, when an opening instruction is input to the controller, the first contactor is closed, the second contactor is opened, the first motor rotates after receiving an electric signal, the first encoder detects the rotation angle of the butterfly plate in real time and feeds the rotation angle back to the controller in the rotation process of the first motor, and when the controller receives a signal of 90 degrees of turnover of the butterfly plate, the first motor stops rotating, and the opening action of the butterfly plate is completed; and then the first contactor is opened, the second contactor is closed, the second motor rotates after receiving the electric signal, the second encoder detects the rotation angle of the ball valve in real time in the rotation process of the second motor and feeds back the rotation angle to the controller, and when the controller receives the rotation of the ball valve by 90 degrees, the second motor stops rotating, and the whole opening action of the valve is completed. When a closing instruction is input to the controller, the first contactor is opened, the second contactor is closed, the second motor receives an electric signal to rotate anticlockwise, the second encoder detects the position of the ball valve in real time and feeds the position back to the controller in the rotation process of the second motor, and when the controller receives the signal that the ball valve rotates to the closing position of the valve, the second motor stops rotating, and the closing action of the ball valve is completed; then the first contactor is closed, the second contactor is opened, the first motor rotates after receiving the electric signal, the first encoder detects the butterfly plate position in real time and feeds back to the controller in the rotation process of the first motor, when the controller receives the signal that the butterfly plate rotates to the closing position, the first motor stops rotating, the butterfly plate closing action is completed, and then the whole closing action of the valve is completed. The rotary position of the valve can be detected in real time through the first encoder and the second encoder, so that accurate position feedback information is provided, and the controller can realize accurate position control.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the setting of case both sides butterfly plate, when the valve was opened, first interior driving mechanism started, drive the butterfly plate upset, and outer driving mechanism starts afterwards, drives the valve rod and rotates 90 degrees, accomplishes the valve operation of opening. The butterfly plate is turned over to open the flow dividing hole, so that a bypass branch is provided for the middle valve body with high pressure and large drift diameter to release pressure, the tangential stress of the valve rod when the valve is at the initial opening position is reduced, and the convenience of valve opening is further reduced. In addition, when the valve is closed, the external driving mechanism is started at first, the valve rod is driven to reversely rotate for 90 degrees, after the spherical sealing surface is abutted with the sealing ring, the internal driving mechanism is started again, the butterfly plate is reversely turned and reset, and the valve closing operation is completed. The valve core is in an open state in the closing process, so that the pressure of the last position of the valve when the valve is closed can be reduced, the convenience of closing the valve is improved, and finally, the acting force of a medium born by the butterfly plate in the turning process of the final stage of closing the valve is smaller due to the smaller area of the butterfly plate, the valve core is more convenient to turn over, and the effect of quick sealing can be achieved;
2. through the setting of interior mechanism and first drive assembly, when first drive assembly starts, drive down bevel gear and rotate, lower bevel gear rotates and drives two upper bevel gears and rotate, and upper bevel gear rotates and drives corresponding horizontal transmission shaft and rotate, and horizontal transmission shaft rotates and drives corresponding oblique transmission shaft and rotate, and oblique transmission shaft rotates and drives corresponding tilting shaft and rotate, and tilting shaft rotates and drives the butterfly plate and rotate, realizes the purpose of drive butterfly plate upset. According to the concrete composition structure of the valve core, the whole structure of the internal driving mechanism is arranged in the valve core through a series of transmission mechanisms, so that the movement of the valve core is not blocked while the internal driving mechanism moves, the extra space occupied by the internal driving structure in the middle valve body is reduced, and the smoothness of medium circulation during valve opening is improved. In addition, through the rotatory effect of lower bevel gear and last bevel gear meshing and universal hinge, realize driven effect to can realize carrying out synchronous control's purpose to two butterfly plates, help reducing the loaded down with trivial details degree of control, improve the control efficiency of butterfly plate upset.
3. Through the setting of the division groove on the sealing lip, the large and thick sealing lip is converted into a plurality of small and thin sealing components which are closely distributed, so that the required torque when the butterfly plate is turned over can be greatly reduced while the good sealing effect of the sealing lip is ensured, and the opening and closing difficulty of the butterfly plate is reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a butterfly valve in a dual-drive ball according to an embodiment of the application.
Fig. 2 is a sectional view showing the internal construction of the side valve body, the middle valve body and the upper valve body in the embodiment of the present application.
Fig. 3 is a schematic structural view showing a specific construction of a valve cartridge in the embodiment of the present application.
Figure 4 is a cut-away view of an upper support and a lower support embodying an embodiment of the present application.
Fig. 5 is a cut-away view of an external drive mechanism and a second drive assembly embodying an embodiment of the present application.
Fig. 6 is a schematic view of a guide groove in an embodiment of the present application.
Fig. 7 is a schematic structural view of an inner driving mechanism in an embodiment of the present application.
Fig. 8 is a schematic structural view of a first driving assembly according to an embodiment of the present application.
FIG. 9 is a cut-away view of a particular configuration of butterfly plate and sealing lip embodying an embodiment of the application.
Figure 10 is a flow chart of the operation of the valve opening and closing in an embodiment embodying the present application.
Reference numerals illustrate: 1. an intermediate valve body; 11. a lumen channel; 12. a lower support; 121. a first annular groove; 122. a mounting frame; 13. an upper support; 131. a through hole; 1311. a second annular groove; 14. a first drive assembly; 141. a first motor; 142. a first drive gear; 143. a lower transmission shaft; 1431. a first driven gear; 2. a side valve body; 21. a seal ring; 3. a valve core; 31. a control channel; 32. a spherical sealing surface; 33. a valve stem; 331. a threaded section; 332. a guide rod; 34. a connecting seat; 341. a rotating lever; 35. ball valve; 351. a diversion aperture; 352. an avoidance groove; 36. a base block; 37. a connecting rod; 4. an external drive mechanism; 41. an upper valve body; 411. a guide groove; 412. a mounting plate; 42. rotating the nut; 421. a second driven gear; 43. a second drive assembly; 431. a second motor; 432. a second drive gear; 5. a butterfly plate; 51. an annular mounting groove; 52. a sealing lip; 521. a dividing groove; 53. a limit retainer ring; 6. an internal driving mechanism; 61. a lower bevel gear; 62. a horizontal drive shaft; 63. an upper bevel gear; 64. an inclined transmission shaft; 65. a turnover shaft; 7. a controller; 71. a first contactor; 72. a second contactor; 73. a first encoder; 74. a second encoder.
Detailed Description
The present application will be described in further detail with reference to fig. 1 to 10.
The embodiment of the application discloses a butterfly valve in a double-drive ball. Referring to fig. 1 and 2, a butterfly valve door in dual-drive ball comprises a middle valve body 1 and side valve bodies 2, wherein the side valve bodies 2 are arranged on two sides of the middle valve body 1 in a fastening mode of bolts and nuts, and an inner cavity channel 11 for medium circulation and a valve core 3 for on-off control of medium circulation are arranged in the middle valve body 1.
Referring to fig. 2, a sealing ring 21 is installed at one end of the side valve body 2 near the middle valve body 1, a control channel 31 for medium circulation is provided on the valve core 3, a spherical sealing surface 32 is further provided on the valve core 3, the spherical sealing surfaces 32 are located at two circumferential sides of the control channel 31, the spherical sealing surfaces 32 are abutted with the corresponding sealing rings 21, and at this time, the valve core 3 is in a closed state. The valve core 3 is provided with a valve rod 33, the valve rod 33 is arranged along the vertical direction, and the intermediate valve body 1 is provided with an external driving mechanism 4 for driving the valve rod 33 to rotate. When the valve stem 33 is rotated 90 degrees from the position where the valve element 3 is in the closed state by the external drive mechanism 4, the control passage 31 coincides with the direction of the inner chamber passage 11, and at this time, the valve element 3 is in the open state.
Referring to fig. 2, 3 and 4, the valve core 3 includes a connection seat 34 and ball flaps 35 hinged at two ends of the connection seat 34, a rotating rod 341 is fixedly connected at the center of the lower end of the connection seat 34, a lower support 12 is mounted at the lower end of the inner wall of the middle valve body 1, the lower end of the lower support 12 penetrates out of the middle valve body 1 and is fixed with the lower end of the middle valve body 1 through bolts and nuts, two layers of first annular grooves 121 are formed in the peripheral side wall of the lower support 12, O-shaped rings are placed in the first annular grooves 121, and medium can be prevented from overflowing through gaps between the lower support 12 and the middle valve body 1. The rotating rod 341 is rotatably connected to the lower support 12 in the vertical direction, the lower end of the valve rod 33 is fixedly connected with a base block 36, two ends of the base block 36 are connected with connecting rods 37, one end of each connecting rod 37 is hinged with the base block 36, and the other end of each connecting rod 37 is hinged with one end, far away from the connecting block, of the adjacent ball valve 35. The spherical sealing surface 32 is located at one side of the two spherical petals 35 away from each other, the control channel 31 is a channel formed by the inner side of the structure surrounded by the connecting seat 34, the spherical petals 35, the base block 36 and the connecting rod 37, and the external driving mechanism 4 can also be used for driving the valve rod 33 to vertically lift.
When the valve rod 33 is driven to move upwards by the external driving mechanism 4, the valve rod 33 drives the base block 36 to ascend, and the base block 36 can enable the two spherical petals 35 to be close and contracted through the connecting rod 37; when the valve rod 33 is driven to move downwards by the external driving mechanism 4, the valve rod 33 drives the base block 36 to descend, and the base block 36 can enable the two spherical petals 35 to be spread outwards through the connecting rod 37; when the external driving mechanism 4 drives the valve rod 33 to rotate, the valve rod 33 drives the base block 36 to rotate, and the base block 36 can drive the two ball petals 35 to rotate through the connecting rod 37. Thus, when the valve is opened, the valve rod 33 can be driven to ascend firstly and then rotate or rotate while ascending through the external driving mechanism 4, so that the two ball petals 35 are driven to sequentially act of contracting firstly and then rotating or rotate while contracting; when the valve is closed, the valve rod 33 can be driven to rotate and then descend through the external driving mechanism 4 or rotate while descending, so that the two ball petals 35 are driven to rotate and then prop up sequentially or prop up gradually while rotating; in the opening and closing process of the valve, when the ball valve 35 rotates, the ball valve 35 and the sealing ring 21 are separated from each other or have a tendency of being separated from each other, so that the possibility that the spherical sealing surface 32 contacts with the sealing ring 21 in the opening and closing process is reduced, the abrasion of the spherical sealing surface 32 and the sealing ring 21 in the opening and closing process of the valve is reduced, and the service life of the valve is prolonged.
Referring to fig. 4, an upper support 13 is installed at the upper end of the middle valve body 1, a through hole 131 through which the valve rod 33 passes is formed in the upper support 13, two layers of second annular grooves 1311 are formed in the inner side walls of the through hole 131, and an O-ring is placed in the second annular grooves 1311, so that medium can be prevented from overflowing through a gap between the upper support 13 and the valve rod 33.
Referring to fig. 5 and 6, the external driving mechanism 4 includes an upper valve body 41 mounted on the upper end of the upper support 13 by fastening means of bolts and nuts, a valve rod 33 penetrates through an inner cavity of the upper valve body 41, a rotating nut 42 is rotationally connected to the upper valve body 41, a threaded section 331 is provided on the upper end of the peripheral side wall of the valve rod 33, and the rotating nut 42 is sleeved on the threaded section 331 and is in threaded connection with the threaded section 331. The side wall of the upper valve body 41 is provided with a guide slot 411, the guide slot 411 gradually rises or gradually falls, and the angular displacement variation of the starting position and the final position of the guide slot 411 is not less than 90 degrees. The side wall of the valve rod 33 is provided with a guide rod 332 which is matched with the guide slot 411, the guide rod 332 is positioned in the guide slot 411, and the upper valve body 41 is provided with a second driving component 43 which drives the rotating nut 42 to rotate.
When the second driving assembly 43 drives the rotation nut 42 to rotate, the valve rod 33 can move up and down through the arrangement of the thread segments 331, and the guide rod 332 on the valve rod 33 can enable the valve rod 33 to rotate by 90 degrees while lifting under the constraint of the guide slot 411, so that the two spherical petals 35 gradually shrink or expand and simultaneously rotate by 90 degrees, the control efficiency of the movement of the spherical petals 35 is improved, and the switching efficiency of opening and closing of the valve is improved.
Referring to fig. 5 and 6, a mounting plate 412 is fixed to the upper valve body 41, and the second driving assembly 43 includes a second motor 431 mounted to the mounting plate 412 and a second driving gear 432 coaxially fixed to an output end of the second motor 431, and a second driven gear 421 is coaxially fixed to an outer side of the rotation nut 42, the second driven gear 421 being engaged with the second driving gear 432. When the second motor 431 rotates, the second driving gear 432 is driven to rotate, the second driving gear 432 rotates to drive the second driven gear 421 to rotate, and the second driven gear 421 rotates to drive the rotation nut 42 to rotate. The forward and reverse rotation switching of the rotating nut 42 is realized through the forward and reverse rotation switching of the second motor 431, so that the switching of the up-and-down movement of the driving valve rod 33 is realized, the switching of the opening and closing of the valve is realized, the degree of automation of the opening and closing of the valve is improved, and the manual labor is reduced.
Referring to fig. 2 and 3, both sides of the valve core 3 in the circumferential direction are provided with a diversion hole 351, the diversion hole 351 is provided at one end of the two ball flaps 35 which are far away from each other, the wall of the diversion hole 351 is coaxially provided with the inner cavity wall of the side valve body 2, one end of the diversion hole 351 is communicated with the control channel 31, and the other end is communicated with the corresponding spherical sealing surface 32. The diversion hole 351 is rotationally connected with a butterfly plate 5, and the valve core 3 is provided with an inner driving mechanism 6 for driving the butterfly plate 5 to turn over.
When the valve is opened, the inner driving mechanism 6 is started firstly to drive the butterfly plate 5 to turn over, then the outer driving mechanism 4 is started to drive the valve rod 33 to rotate for 90 degrees, and the valve opening operation is completed. The diversion hole 351 is opened by turning the butterfly plate 5, and a bypass branch is provided for the middle valve body 1 with high pressure and large drift diameter to release pressure, so that the shear stress on the valve rod 33 when the valve is at the initial position is reduced, and the convenience of valve opening is further reduced and improved. In addition, when the valve is closed, the external driving mechanism 4 is started first, the driving valve rod 33 reversely rotates by 90 degrees, after the spherical sealing surface 32 is abutted with the sealing ring 21, the internal driving mechanism 6 is started again, the butterfly plate 5 reversely overturns and resets, and the valve closing operation is completed. Because the valve core 3 is in the open state in the closing process, the pressure of the last position when the valve is closed can be reduced, the convenience of closing the valve is improved, and finally, the acting force of the medium born by the butterfly plate 5 when the butterfly plate is turned over in the final stage of closing the valve is also smaller, the valve is turned over more conveniently, and the effect of quick sealing can be achieved.
Referring to fig. 2, 3 and 7, the inner drive mechanism 6 includes a lower bevel gear 61 rotatably connected to the connection base 34 in a vertical direction, two horizontal transmission shafts 62 rotatably connected to the connection base 34 in a longitudinal direction thereof, the two horizontal transmission shafts 62 are symmetrically disposed on both sides of the lower bevel gear 61, an upper bevel gear 63 is coaxially fixed to one end of the two horizontal transmission shafts 62 close to each other, and the lower bevel gear 61 is simultaneously engaged with the two upper bevel gears 63. The end that horizontal transmission shaft 62 kept away from corresponding upper bevel gear 63 is connected with oblique transmission shaft 64 through universal hinge respectively, and one side that two butterfly plates 5 are close to each other is fixed with tilting shaft 65, and tilting shaft 65 rotates along vertical direction and sets up in ball valve 35, and tilting shaft 65's lower extreme and adjacent corresponding oblique transmission shaft 64 keep away from the one end of horizontal transmission shaft 62 through universal hinge connection, offer on the ball valve 35 and be used for dodging the groove 352 of dodging of oblique transmission shaft 64, be equipped with the first drive assembly 14 of the pivoted of bevel gear 61 under the drive on the intermediate valve body 1.
When the first driving assembly 14 is started to drive the lower bevel gears 61 to rotate, the lower bevel gears 61 rotate to drive the two upper bevel gears 63 to rotate, the upper bevel gears 63 rotate to drive the corresponding horizontal transmission shafts 62 to rotate, the horizontal transmission shafts 62 rotate to drive the corresponding inclined transmission shafts 64 to rotate, the inclined transmission shafts 64 rotate to drive the corresponding overturning shafts 65 to rotate, and the overturning shafts 65 rotate to drive the butterfly plates 5 to rotate, so that the purpose of driving the butterfly plates 5 to overturn is achieved. According to the concrete composition structure of the valve core 3, the whole structure of the internal driving mechanism 6 is arranged in the valve core 3 through a series of transmission mechanisms, so that the movement of the valve core 3 is not blocked while the internal driving mechanism moves, the extra space occupied by the internal driving mechanism in the middle valve body 1 is reduced, and the smoothness of medium circulation during valve opening is improved. In addition, through the rotation effect of the meshing of the lower bevel gear 61 and the upper bevel gear 63 and the universal hinge, the transmission effect is realized, so that the aim of synchronously controlling the two butterfly plates 5 can be fulfilled, the complicated degree of control is reduced, and the control efficiency of overturning the butterfly plates 5 is improved.
Referring to fig. 2, 4 and 8, the mounting bracket 122 is mounted at the lower end of the lower support 12, the first driving assembly 14 includes a first motor 141 fixed to the bottom end of the mounting bracket 122 and a first driving gear 142 coaxially fixed to the output end of the first motor 141, a lower driving shaft 143 is coaxially fixed to the lower end of the lower bevel gear 61, the rotating shaft 341 is a hollow shaft, the lower driving shaft 143 is coaxially disposed with the rotating shaft 341 and the lower end of the lower driving shaft 143 penetrates out of the rotating shaft 341 and the lower support 12, a first driven gear 1431 is coaxially fixed to the lower end of the lower driving shaft 143, and the first driven gear 1431 is engaged with the first driving gear 142. When the first motor 141 rotates, the first driving gear 142 is driven to rotate, the first driving gear 142 rotates to drive the first driven gear 1431 to rotate, and the first driven gear 1431 rotates to drive the lower transmission shaft 143 to rotate, so as to drive the lower bevel gear 61 to rotate. By using one first motor 141 as a driving source, synchronous turning control of the two butterfly plates 5 is realized, and the number of the driving sources is reduced.
Referring to fig. 2 and 9, an annular mounting groove 51 is formed in the edge of one side, far away from the turning shaft 65, of the butterfly plate 5, a sealing lip 52 is mounted in the annular mounting groove 51, the sealing lip 52 is an elastic member, a limiting retainer ring 53 is detachably connected to the butterfly plate 5 through a bolt, one side of the sealing lip 52 is abutted against the bottom wall of the annular mounting groove 51, and the other side of the sealing lip 52 is abutted against the limiting retainer ring 53. The peripheral side wall of the seal lip 52 abuts against the hole wall of the diversion hole 351, and a plurality of division grooves 521 are provided on the peripheral side wall of the seal lip 52 at regular intervals in the thickness direction of the seal lip 52. In this embodiment Zhou Minghua, the sealing lip 52 is a highly wear resistant rubber.
When the overturning shaft 65 rotates, the sealing lip 52 is forced to elastically deform, so that the butterfly plate 5 can overturn in the diversion hole 351; when the butterfly plate 5 is in the closed state, the sealing lip 52 is reset and is abutted against the hole wall of the diversion hole 351, so that the possibility that the medium overflows from the gap between the butterfly plate 5 and the diversion hole 351 is reduced. Through the arrangement of the dividing grooves 521, the large and thick sealing lips 52 are converted into a plurality of small and thin sealing members which are closely distributed, so that the required torque when the butterfly plate 5 is turned over can be greatly reduced while the good sealing effect of the sealing lips 52 is ensured, and the opening and closing difficulty of the butterfly plate 5 is reduced.
Referring to fig. 10, the dual-drive ball butterfly valve further includes a controller 7, and a first contactor 71 and a second contactor 72 connected to the controller 7, the first contactor 71 being connected to a first motor 141, and the second contactor 72 being connected to a second motor 431. The first motor 141 is connected with a first encoder 73, the second motor 431 is connected with a second encoder 74, and the first encoder 73 and the second encoder 74 are respectively electrically connected with the controller 7. In order to avoid the problems of misoperation and power short circuit caused by simultaneous suction of the first contactor 71 and the second contactor 72, the first contactor 71 and the second contactor 72 are interlocked.
When an opening instruction is input to the controller 7, the first contactor 71 is closed, the second contactor 72 is opened, the first motor 141 rotates after receiving an electric signal, the first encoder 73 detects the rotation angle of the butterfly plate 5 in real time and feeds back the rotation angle to the controller 7 in the rotation process of the first motor 141, and when the controller 7 receives a signal that the butterfly plate 5 turns over 90 degrees, the first motor 141 stops rotating, and the opening action of the butterfly plate 5 is completed; then the first contactor 71 is opened, the second contactor 72 is closed, the second motor 431 rotates after receiving the electric signal, the second encoder 74 detects the rotation angle of the ball valve 35 in real time and feeds back to the controller 7 in the rotation process of the second motor 431, and when the controller 7 receives that the ball valve 35 rotates 90 degrees, the second motor 431 stops rotating, and the whole opening action of the valve is completed. When a closing instruction is input to the controller 7, the first contactor 71 is opened, the second contactor 72 is closed, the second motor 431 receives an electric signal to rotate anticlockwise, the second encoder 74 detects the position of the ball valve 35 in real time and feeds back the position to the controller 7 in the rotating process of the second motor 431, and when the controller 7 receives a signal that the ball valve 35 rotates to the valve closing position, the second motor 431 stops rotating, and the closing action of the ball valve 35 is completed; then the first contactor 71 is closed, the second contactor 72 is opened, the first motor 141 rotates after receiving the electric signal, the first encoder 73 detects the position of the butterfly plate 5 in real time and feeds back to the controller 7 in the rotating process of the first motor 141, when the controller 7 receives the signal that the butterfly plate 5 rotates to the closing position, the first motor 141 stops rotating, the closing action of the butterfly plate 5 is completed, and then the whole closing action of the valve is completed. The position of the valve rotation can be detected in real time by the first encoder 73 and the second encoder 74, so that accurate position feedback information is provided, and the controller 7 realizes accurate position control.
The implementation principle of the butterfly valve in the double-driving ball provided by the embodiment of the application is as follows: the whole opening and closing process of the valve is as follows:
the valve opening process comprises the following steps:
opening the first stage: the first motor 141 drives butterfly valves formed by the butterfly plates 5 on both sides to open. The specific implementation mode is as follows: the first motor 141 is started to drive the first driving gear 142 to rotate, the first driving gear 142 rotates to drive the first driven gear 1431 to rotate, and the first driven gear 1431 rotates to drive the lower transmission shaft 143 to rotate, so that the purpose of driving the lower bevel gear 61 to rotate is achieved. The rotation of the lower bevel gears 61 drives the two upper bevel gears 63 to rotate, the rotation of the upper bevel gears 63 drives the corresponding horizontal transmission shafts 62 to rotate, the rotation of the horizontal transmission shafts 62 drives the corresponding inclined transmission shafts 64 to rotate, the rotation of the inclined transmission shafts 64 drives the corresponding overturning shafts 65 to rotate, the overturning shafts 65 drive the butterfly plates 5 to rotate, the purpose of driving the butterfly plates 5 to overturn is achieved, and the opening process of the butterfly plates 5 at two sides can be completed;
opening the second stage: the second motor 431 drives the valve core 3 to integrally form a ball valve to shrink and rotate. The specific implementation mode is as follows: when the second motor 431 is started, the second driving gear 432 is driven to rotate, the second driving gear 432 rotates to drive the second driven gear 421 to rotate, and the second driven gear 421 rotates to drive the rotating nut 42 to rotate. Through the arrangement of the thread segments 331, the valve rod 33 can move up and down by rotating the rotating nut 42, and the guide rod 332 on the valve rod 33 can enable the valve rod 33 to rotate by 90 degrees while lifting under the constraint of the guide slot 411, so that the two ball petals 35 can rotate by 90 degrees while gradually contracting or expanding, and the opening process of the valve core 3 can be completed.
The first stage and the second stage are sequentially completed, and the final valve is in a fully opened position, so that the purpose of fully opening the valve is achieved, and smooth flow of fluid is facilitated.
Similarly, the valve closing process includes a closing first phase and a closing second phase. The first closing stage is that the second motor 431 drives the ball valve integrally formed by the valve core 3 to rotate and open when the valve is in a fully opened state, and the spherical contact surface is abutted against the corresponding sealing ring 21; the second stage is that the first motor 141 drives butterfly valves formed by the butterfly plates 5 at two sides to close. The first and second closing stages are completed sequentially, and the final valve is in a fully closed position, so that the purpose of fully closing the valve is achieved, and the flow of fluid is closed.
In the embodiment of the application, the valve core 3 integrally forms a ball valve with changeable form, butterfly plates 5 at two sides in the middle valve body 1 form two butterfly valves, and the external driving mechanism 4 is used for controlling the rotation, contraction and expansion of the valve core 3; the valve core 3 is integrally arranged in the middle valve body 1, and the valve core 3 is opened and closed to realize the circulation and closing of fluid in the inner cavity channel 11; the butterfly valve is arranged inside two sides of the ball valve, and the butterfly valve is opened and closed to realize the functions of pressure relief and pressure maintaining for the valve.
In the embodiment of the application, the design of the butterfly valve in the ball is significant for the high-pressure large-diameter ball valve. Before the valve core 3 is opened, the butterfly valve is opened first, so that bypass branch release pressure is provided for the high-pressure large-diameter ball valve, friction force and shearing force of the valve rod 33 are reduced, and the valve core 3 is opened conveniently; when the valve core 3 is closed, the butterfly valve is in an open state, so that the impact force of fluid pressure on the sealing ring 21 is reduced, and the sealing ring 21 is prevented from being washed away; after the valve core 3 is closed, the butterfly valve is forcedly sealed, so that the problem that the valve is difficult to close tightly due to too high pressure at the end position of closing the valve and even leakage caused by loose sealing is solved.
In addition, the embodiment of the application adopts a double-driving structure, the external driving mechanism 4 and the internal driving mechanism 6 respectively control the opening and closing of the ball valve and the butterfly valve, and the sequential opening and closing of the ball valve and the butterfly valve can be realized only by switching on a power supply, so that the automation degree is high, and the operation is convenient.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. The utility model provides a butterfly valve door in two drive balls which characterized in that: including intermediate valve body (1) and locate side valve body (2) at intermediate valve body (1) both ends, be equipped with sealing washer (21) in the one end that is close to intermediate valve body (1) in side valve body (2), be equipped with case (3) in intermediate valve body (1), be equipped with control channel (31) that supplies the medium to circulate on case (3), still be equipped with spherical sealed face (32) on case (3), just spherical sealed face (32) are located the circumference both sides of control channel (31), spherical sealed face (32) and the butt of sealing washer (21) that corresponds, be equipped with valve rod (33) on case (3), be equipped with outer driving mechanism (4) of drive valve rod (33) rotation on intermediate valve body (1), the circumference both sides of case (3) are equipped with branch flow hole (351), the one end and the control channel (31) intercommunication of branch flow hole (351), the other end and the spherical sealed face (32) intercommunication that corresponds are equipped with butterfly plate (5), be equipped with the interior driving mechanism (6) that drive butterfly plate (5) upset on case (3).
2. The dual drive ball butterfly valve of claim 1, wherein: the valve core (3) comprises a connecting seat (34) and ball petals (35) hinged to two ends of the connecting seat (34), a rotating rod (341) is arranged at the lower end of the connecting seat (34), the rotating rod (341) is rotationally connected to the middle valve body (1), a base block (36) is arranged at the lower end of the valve rod (33), connecting rods (37) are arranged at two ends of the base block (36), one end of each connecting rod (37) is hinged to the base block (36), the other end of each connecting rod is hinged to one end of an adjacent ball petal (35) away from the connecting block, the spherical sealing surface (32) is located on one side, away from each other, of the two ball petals (35), and the external driving mechanism (4) can be used for driving the valve rod (33) to vertically lift.
3. A dual drive ball butterfly valve according to claim 2, wherein: the utility model provides an internal drive mechanism (6) is including rotating lower bevel gear (61) of being connected on connecting seat (34) along vertical direction, it is connected with two horizontal transmission shafts (62) to rotate along self length direction on connecting seat (34), two horizontal transmission shafts (62) symmetry sets up in the both sides of lower bevel gear (61), two horizontal transmission shafts (62) one end that is close to each other is equipped with bevel gear (63), lower bevel gear (61) meshes with two bevel gears (63) simultaneously, the one end that corresponds upper bevel gear (63) is kept away from to horizontal transmission shafts (62) is connected with oblique transmission shaft (64) through universal hinge respectively, vertically on butterfly plate (5) be provided with tilting shaft (65), the lower extreme of tilting shaft (65) is kept away from the one end of horizontal transmission shaft (62) with adjacent corresponding oblique transmission shaft (64) and is passed through universal hinge connection, be equipped with on ball valve (35) and be used for dodging groove (352) of dodging oblique transmission shaft (64), be equipped with on middle bevel gear (1) pivoted first drive assembly (14).
4. A dual drive ball butterfly valve according to claim 3, wherein: be equipped with mounting bracket (122) on intermediate valve body (1), first drive assembly (14) including locating first motor (141) on mounting bracket (122) and with the coaxial fixed first driving gear (142) of output of first motor (141), the lower extreme coaxial fixed with lower transmission shaft (143) of lower bevel gear (61), dwang (341) are hollow pole, dwang (341) and intermediate valve body (1) are worn out to the lower extreme of lower transmission shaft (143) just the lower extreme coaxial fixed with first driven gear (1431) of lower transmission shaft (143), first driven gear (1431) and first driving gear (142) meshing.
5. The dual drive ball butterfly valve of claim 1, wherein: one side edge of butterfly plate (5) is equipped with annular mounting groove (51), be equipped with seal lip (52) in annular mounting groove (51), seal lip (52) are elastic component, be connected with spacing retaining ring (53) on butterfly plate (5) can be dismantled, one side and annular mounting groove (51) diapire butt of seal lip (52), opposite side and spacing retaining ring (53) butt, the global lateral wall of seal lip (52) and the pore wall butt of reposition of redundant personnel hole (351), be provided with a plurality of division grooves (521) along the thickness direction interval of seal lip (52) on the global lateral wall of seal lip (52).
6. The dual drive ball butterfly valve of claim 4, wherein: the utility model provides an external drive mechanism (4) is including locating last valve body (41) of middle valve body (1) upper end, go up valve body (41) internal rotation and be connected with rotation nut (42), the global lateral wall upper end of valve rod (33) is equipped with screw thread section (331), rotation nut (42) cover is located on screw thread section (331) and with screw thread section (331) threaded connection, be equipped with guide slot (411) on the lateral wall of going up valve body (41), guide slot (411) are the trend change that rises gradually or descend gradually just the angular displacement variation of guide slot (411) start and end position is not less than 90, be equipped with on valve rod (33) with guide slot (411) looks adaptation guide arm (332), in guide slot (411) are located to guide arm (332), upward be equipped with on valve body (41) drive rotation nut (42) pivoted second drive assembly (43).
7. The dual drive ball butterfly valve of claim 6, wherein: the second driving assembly (43) comprises a second motor (431) arranged on the upper valve body (41) and a second driving gear (432) arranged on the output end of the second motor (431), a second driven gear (421) is coaxially fixed on the outer side of the rotating nut (42), and the second driven gear (421) is meshed with the second driving gear (432).
8. The dual drive ball butterfly valve of claim 7, wherein: the intelligent control device is characterized by further comprising a controller (7), a first contactor (71) and a second contactor (72), wherein the first contactor (71) is connected with the controller (7), the first contactor (71) is connected with a first motor (141), the second contactor (72) is connected with a second motor (431), the first motor (141) is connected with a first encoder (73), the second motor (431) is connected with a second encoder (74), and the first encoder (73) and the second encoder (74) are respectively electrically connected with the controller (7).
CN202311187922.3A 2023-09-15 2023-09-15 Butterfly valve door in double-drive ball Active CN116972192B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1498325A (en) * 1966-04-29 1967-10-20 Adjustable flow ball valve
US4736771A (en) * 1985-06-07 1988-04-12 Forsac Valves Limited Valve assembly for pipeline
US4928725A (en) * 1989-08-07 1990-05-29 Graves John G Combination plug and two-way check valve
CN2630589Y (en) * 2003-05-23 2004-08-04 厦门三高维多利阀门有限公司 Ball valve with long service life
KR20170084932A (en) * 2016-01-13 2017-07-21 동아대학교 산학협력단 Hybrid valve for micro flow control
CN111795172A (en) * 2020-07-03 2020-10-20 武芳 Novel ball valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1498325A (en) * 1966-04-29 1967-10-20 Adjustable flow ball valve
US4736771A (en) * 1985-06-07 1988-04-12 Forsac Valves Limited Valve assembly for pipeline
US4928725A (en) * 1989-08-07 1990-05-29 Graves John G Combination plug and two-way check valve
CN2630589Y (en) * 2003-05-23 2004-08-04 厦门三高维多利阀门有限公司 Ball valve with long service life
KR20170084932A (en) * 2016-01-13 2017-07-21 동아대학교 산학협력단 Hybrid valve for micro flow control
CN111795172A (en) * 2020-07-03 2020-10-20 武芳 Novel ball valve

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