CN112361012B - Forced sealing valve operating device - Google Patents
Forced sealing valve operating device Download PDFInfo
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- CN112361012B CN112361012B CN202011319032.XA CN202011319032A CN112361012B CN 112361012 B CN112361012 B CN 112361012B CN 202011319032 A CN202011319032 A CN 202011319032A CN 112361012 B CN112361012 B CN 112361012B
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- operating device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/10—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)
- Sliding Valves (AREA)
Abstract
The invention relates to a forced sealing valve operating device, wherein a valve core is provided with a first driving shaft (26) and a second driving shaft (27), the first driving shaft is provided with a driving head (24), the first driving shaft is connected with a first valve clack driving piece (50), the first valve clack driving piece is provided with a locking body (60), and the valve core drives the first valve clack driving piece to rotate in the rotating stroke of the first valve clack driving piece; after the first valve clack driver rotates to the closed position, the valve core rotates relative to the first valve clack driver. The invention improves the operating device of the forced sealing valve, adopts the driving head provided with the locking shifting block and the locking groove, the valve body provided with the unlocking groove and the cylindrical locking body, so that the operating structure is simpler and more stable, the operating performance of the locking structure can be improved, the stress state and the wear resistance of the locking structure can be improved, and the service life of the operating device can be prolonged; the operating device is arranged at the position of the first valve clack driving piece, and the operating device and the valve rod are respectively arranged at two sides of the valve core flow channel, so that the on-line maintenance and repair of the forced sealing valve can be realized.
Description
Technical Field
The invention belongs to a forced sealing valve, and particularly relates to an operating device of the forced sealing valve.
Background
The forced sealing valve has outstanding excellent sealing performance, and the valve can realize sealing detection under the working condition of line pressure at the closing position, so that the reliability of closing the valve can be ensured.
The Chinese invention patent (application number CN 201910889922.5) discloses a DBB forced sealing valve and an operating device, which adopt a balanced type valve core design, simplify the structure of a valve rod and improve the sealing reliability of the valve rod. The second valve clack driving part and the first valve clack driving part are adopted, the movement and forced sealing of the valve clack are realized in a bidirectional inclined plane driving mode, and the structural size can be effectively reduced. The operating device disclosed in the patent is arranged on the side of the second valve clack driving part on the same side with the valve rod, the locking body is provided with a locking rocker arm on the second valve clack driving part, the top end of the locking rocker arm is in sliding contact with the rocker base surface of the upper bearing block, the top end of the rotating rocker arm of the locking rocker arm moves on the rocker guide surface of the valve core sphere, and because the contact surface between the top end of the locking rocker arm and the rocker base surface is very small, the contact surface between the top end of the rotating rocker arm and the rocker guide surface is also very small, and the top end of the rotating rocker arm is in line-surface contact, can generate stronger contact pressure and friction force, so that the stress state of the locking rocker arm is relatively severe and easy to generate abrasion, although high-quality materials and processing technologies can be adopted, the service life of the locking rocker arm can be influenced, and the manufacturing cost is increased. The chinese utility model patent (application number 2019216204168) discloses a forced seal valve rod operating means, has adopted the locking body of cylinder, makes the operating performance and the life-span of the locking body improve. The locking body driving groove is directly arranged on the valve rod, and the valve rod is required to have a larger diameter so as to obtain a good operation effect and prolong the service life; the structure of driving ring has been adopted among its technical scheme, and the driving ring is as the carrier of locking the body, locks valve clack driving piece and valve rod or valve body, and the driving ring is a floating part, goes up valve clack driving piece and need to make the driving ring have more complicated structure and stress state for driving ring axial displacement, according to the experiment, when being applied to high-pressure valve, can take place the not good condition of operating characteristic. In addition, among the two above-mentioned technical scheme, its valve clack driving piece sets up in valve rod one side, makes its maintenance and maintenance work comparatively difficult, if will change operating means, need dismantle valve rod and relevant structure, also can't realize online maintenance and maintenance. Another problem is that the DBB positive seal valve inevitably deposits some impurities at the bottom of the valve during long-term use, and the accumulation of impurities seriously affects the effective operation of the valve.
Disclosure of Invention
The invention aims to provide an operating device for a forced sealing valve, which improves the maintainability of the forced sealing valve and prolongs the service life of the forced sealing valve.
In order to realize the purpose, the technical scheme of the invention is as follows: a positive sealing valve operating device comprising a valve body (10), a valve cartridge (20) and a valve stem (30); the valve core is provided with a first driving shaft (26) and a second driving shaft (27), the first driving shaft is provided with a driving head (24), the first driving shaft is connected with a first valve clack driving piece (50), the first valve clack driving piece is provided with a locking body (60), the first valve clack driving piece rotates in a rotating stroke (R1) between an opening position and a closing position, in the rotating stroke of the first valve clack driving piece, the locking body locks the connection between the first valve clack driving piece and the driving head, and the valve core drives the first valve clack driving piece to rotate; after the first valve clack driving piece rotates to a closed position, the locking body unlocks the connection between the first valve clack driving piece and the driving head, and the valve core rotates relative to the first valve clack driving piece.
Furthermore, in order to realize the operation function, the first valve clack driving piece is provided with a locking shifting block (51), the locking shifting block is provided with a locking body guide hole (52), a locking body (60) is arranged in the locking body guide hole, the driving head is provided with a locking groove (22), and the locking body is embedded in the locking groove and locks the connection between the first valve clack driving piece and the driving head; the valve body is provided with an unlocking groove (11), the locking body moves into the unlocking groove and is separated from the locking groove, and the valve core rotates relative to the first valve clack driving piece.
Furthermore, in order to obtain good structural and operational performance, the valve body is provided with a locking guide (13) provided with a sector (15); the driving head is provided with a cylindrical surface (28), the locking groove (22) is arranged on the cylindrical surface of the driving head, and the locking groove is an arc-shaped groove corresponding to the locking body (60); the locking shifting block is a fan-shaped block protruding out of the end face (57) of the first valve clack driving piece, the locking shifting block (51) is arranged between the locking guide block (13) and the driving head (24), and the locking body guide hole (52) is a hole corresponding to the locking body; the sector (15) of the locking guide blocks restrains the locking body in the locking slot, locking the connection between the first flap actuator and the drive head; a cylindrical surface (28) of the actuation head constrains the latch in the unlatching slot, latching the connection between the first valve flap actuator and the valve body.
Furthermore, in order to improve the structure and performance of the opening operation, the driving head is provided with an opening shifting block (23), the opening shifting block protrudes out of the cylindrical surface of the driving head, and the opening shifting block shifts the locking shifting block towards the opening direction at the side edge (58) of the locking shifting block.
Furthermore, in order to obtain a good assembly structure and an online maintenance function, the valve body is provided with a first valve cover (12), the locking guide block (13) is arranged on the first valve cover, the locking body moves along the locking guide block in the rotation stroke (R1) of the first valve clack driving piece, the locking body moves out of the locking guide block after the first valve clack driving piece rotates to the closed position, and the moving-out end of the locking body of the locking guide block is provided with an arc-shaped groove (11) forming the unlocking groove.
Furthermore, in order to reduce the overall size of the valve and facilitate maintenance, the first valve flap driving member is provided with a shifting block mounting groove (55), and the locking shifting block (51) is fixed in the shifting block mounting groove.
Furthermore, the structural arrangement of the valve rod and the driving device is that the driving head (24) is fixedly arranged at the end head of the first driving shaft (26), the valve rod (30) is connected with the driving head, and the valve rod drives the driving head and the valve core to synchronously rotate.
Furthermore, in order to facilitate online maintenance of the valve, another structural arrangement of the valve rod and the driving device is that the valve rod (30) is connected with a second driving shaft (27) of the valve core, the driving head is fixedly arranged at the end head of the first driving shaft through a bolt (25), and the valve rod drives the valve core and the driving head to synchronously rotate.
Further, in order to facilitate the routine maintenance of the valve, the valve body is provided with a blowdown valve (70).
Further, the device for operating a positive seal valve is a device for operating a DBB positive seal valve, the valve body (20) is provided with a flow passage (21), the first drive shaft (26) and the second drive shaft (27) are respectively provided on both sides of the flow passage, when the valve body rotates relative to the first flap driving member, the first drive shaft and the second drive shaft drive the first flap driving member (50) and the second flap driving member (40) to move along the rotation axis of the valve body, and the first flap driving member and the second flap driving member drive the seal flap (80) to press against or separate from the valve seat (86).
The invention has the beneficial effects that: the operating device of the forced sealing valve is improved, the driving head provided with the locking shifting block and the locking groove, the valve body provided with the unlocking groove and the cylindrical locking body are adopted, and the driving head is fixedly arranged at the end head of the valve core, so that the operating structure is simpler and more stable, the operating performance of the locking structure can be improved, the stress state and the wear resistance of the locking structure are improved, and the service life of the operating device is prolonged; the operating device is arranged at the position of the first valve clack driving piece, the operating device and the valve rod are respectively arranged at two sides of the valve core flow channel, the on-line maintenance and the repair of the forced sealing valve can be realized, the dredging is convenient, and the whole structure size of the valve can be reduced by adopting the locking shifting block and the driving head which are in an assembly structure.
The invention is described in detail below with reference to the figures and examples.
Drawings
Fig. 1 is a structural view of the present invention on a DBB positive seal valve;
FIG. 2 is a view showing the construction of an operating device according to the present invention;
FIG. 3 is an exploded view of the operating device of the present invention;
FIG. 4 is a schematic representation of the operation of the present invention with the valve in the open position;
FIG. 5 is an operational schematic of the present invention with the valve spool, second valve flap drive, first valve flap drive and seal flap rotated from the open position to the closed position;
FIG. 6 is a schematic operational view of the present invention with the valve spool, second flap actuator, first flap actuator and sealing flap rotated from an open position to a closed position;
FIG. 7 is an operational schematic of the present invention with the valve spool, second valve flap drive, first valve flap drive and sealing valve flap rotated to the closed position and the locking body transposed;
FIG. 8 is an operational view of the present invention, wherein the valve core rotates relative to the first valve flap driving member to drive the second valve flap driving member and the first valve flap driving member to drive the two side sealing valve flaps to press against the valve seat;
FIG. 9 is an operational view of the present invention with the spool rotated in the opening direction and the lock groove 22 rotated to a position corresponding to the lock body;
fig. 10 is an operational view of the present invention, the locking body 60 enters the space of the locking groove and the locking body guide hole, and the locking body locks the connection relationship between the first valve flap driver and the spool.
FIG. 11 is a structural view of the operating device of the present invention, in which the driving head and the valve stem are respectively disposed at both sides of the valve core;
FIG. 12 is an exploded view of the operating device of the present invention, with the actuator head and the valve stem disposed on opposite sides of the valve cartridge;
FIG. 13 is an exploded view of the drive head structure of the first valve cover and valve cartridge of the present invention;
FIG. 14 is a view from the direction B of FIG. 13, which is an exploded view of the driving head of the valve core and the locking shifting block of the first valve clack driving member;
FIG. 15 is a block diagram of the present invention with a waste valve in a lower position;
fig. 16 is a block diagram of the present invention with a waste valve disposed on the first valve cover.
Detailed Description
As shown in fig. 1 to 3, a positive seal valve operating device includes a valve body (10), a valve core (20), and a valve stem (30); the valve core is provided with a first driving shaft (26) and a second driving shaft (27), the first driving shaft is provided with a driving head (24), the first driving shaft is connected with a first valve clack driving piece (50), the first valve clack driving piece is provided with a locking body (60), the first valve clack driving piece rotates in a rotating stroke (R1) between an opening position (shown in figure 4) and a closing position (shown in figure 6), in the rotating stroke of the first valve clack driving piece, the locking body locks the connection between the first valve clack driving piece and the driving head, and the valve core drives the first valve clack driving piece to rotate; after the first valve clack driving piece rotates to a closed position, the locking body unlocks the connection between the first valve clack driving piece and the driving head, and the valve core rotates relative to the first valve clack driving piece.
The first valve clack driving piece is provided with a locking shifting block (51), the locking shifting block is provided with a locking body guide hole (52), the locking body (60) is arranged in the locking body guide hole, the driving head is provided with a locking groove (22), and the locking body is embedded into the locking groove and locks the connection between the first valve clack driving piece and the driving head; the valve body is provided with an unlocking groove (11), the locking body moves into the unlocking groove and is separated from the locking groove, and the valve core rotates relative to the first valve clack driving piece.
The valve body is provided with a locking guide block (13) which is provided with a sector (15); the driving head is provided with a cylindrical surface (28), the locking groove (22) is arranged on the cylindrical surface of the driving head, and the locking groove is an arc-shaped groove corresponding to the locking body (60); the locking shifting block is a fan-shaped block protruding out of the end surface (57) of the first valve clack driving piece, the locking shifting block (51) is arranged between the locking guide block (13) and the driving head (24), and the locking body guide hole (52) is a rectangular hole corresponding to the locking body; the locking body is pressed in the locking groove by a sector surface (15) of the locking guide block, and the connection between the first valve clack driving piece and the driving head is locked; the cylindrical surface (28) of the driving head presses the locking body into the unlocking groove to lock the connection between the first valve clack driving piece and the valve body.
The driving head is provided with an opening shifting block (23), the opening shifting block protrudes out of the cylindrical surface of the driving head, and the opening shifting block shifts the locking shifting block towards an opening direction on the side edge (58) of the locking shifting block.
The valve body is equipped with first valve gap (12), locking guide block (13) set up on the first valve gap in the rotation stroke (R1) of first valve clack driving piece, the locking body is followed the locking guide block removes, after first valve clack driving piece rotates to the closed position, the locking body shifts out the locking guide block, the locking guide block is in the end of shifting out of the locking body is equipped with and constitutes arc wall (11) of unblock groove.
The first valve clack driving piece is provided with a shifting block mounting groove (55), and the locking shifting block (51) is fixed in the shifting block mounting groove.
A valve rod mounting structure is characterized in that a driving head (24) is fixedly mounted at the end head of a first driving shaft (26), a valve rod (30) is connected with the driving head, and the driving head and a valve core are driven by the valve rod to synchronously rotate.
Another valve rod mounting structure is that, as shown in fig. 11 to 16, the valve rod (30) is connected with a second driving shaft (27) of the valve core, the driving head is fixedly mounted at the end of the first driving shaft through a bolt (25), and the valve rod drives the valve core and the driving head to synchronously rotate.
The valve body is provided with a blow-down valve (70).
The device for operating the forced sealing valve is a device for operating the DBB forced sealing valve, the valve core (20) is provided with a flow passage (21), the first driving shaft (26) and the second driving shaft (27) are respectively arranged on two sides of the flow passage, when the valve core rotates relative to the first valve clack driving piece, the first driving shaft and the second driving shaft drive the first valve clack driving piece (50) and the second valve clack driving piece (40) to move along the rotation axis of the valve core, and the first valve clack driving piece and the second valve clack driving piece drive the sealing valve clack (80) to press or separate from a valve seat (86).
The first embodiment is as follows:
as shown in fig. 1 to 10, a positive sealing valve operating device includes a valve body 10, a valve core 20, and a valve stem 30. The positive sealing valve operating device of the present embodiment is an operating device of a DBB positive sealing valve.
A valve core 20 of the DBB forced sealing valve is provided with a flow channel 21, a first driving shaft 26 and a second driving shaft 27 are respectively arranged on two sides of the flow channel, the first driving shaft and the second driving shaft are provided with threads, the thread turning directions of the first driving shaft and the second driving shaft are opposite, the valve core is provided with a driving head 24, the driving head is fixedly arranged at the end head of the first driving shaft of the valve core, and the driving head is provided with a cylindrical surface 28, a locking groove 22 and an opening shifting block 23. Locking groove 22 sets up on drive head face of cylinder 28 (i.e. the concave cylindrical surface), opens the face of cylinder that shifting block 23 salient drive head, and the end of drive head is equipped with the pinhole 29 of being connected with the valve rod, and the valve rod is connected with the drive head through round pin post 31, and the valve rod drives the synchronous rotation of case through the drive head.
The first drive shaft 26 is connected to the first flap drive 50, the second drive shaft 27 is connected to the second flap drive 40, the first flap drive 50 is connected to the first drive shaft 26 of the valve spool via an internal thread 53, and the second flap drive 40 is connected to the second drive shaft 27 of the valve spool via an internal thread 41.
The first flap driving member 50 is provided at both sides thereof with first driving rails 54 for driving the sealing flaps 80, respectively, the first driving rails being inclined inwardly to the rotational axis of the spool at an end away from the flow passage 21. The second valve flap driving member 40 is provided at both sides thereof with second driving rails 42 for driving the sealing valve flaps, respectively, the second driving rails being inclined inwardly to the rotational axis of the valve body at an end away from the flow passage 21. The first drive track 54 and the second drive track 42 employ a dovetail configuration.
The two sides of the first valve clack driving piece and the second valve clack driving piece are respectively provided with a sealing valve clack 80, the sealing valve clack is provided with a first valve clack guide groove 82, the first valve clack guide groove is a dovetail groove matched with the first driving track 54, the sealing valve clack is provided with a second valve clack guide groove 81, and the second valve clack guide groove is a dovetail groove matched with the second driving track 42. The first valve flap driving member 50, the second valve flap driving member 40, and the both side seal valve flaps 80 rotate synchronously about the rotation axis of the valve body.
An upper bearing block 83 and a lower bearing block 84 are provided in the valve body. The upper bearing block and the lower bearing block are provided with limiting columns 85, and the limiting columns 85 limit the first valve clack driving piece and the second valve clack driving piece to rotate within a rotating stroke R1 between the opening position and the closing position.
The first valve flap actuator is provided with a locking finger 51 which is a sector protruding from the end face 57 of the first valve flap actuator and which is provided with a locking body guide hole 52 which is a through hole. The locking body guide hole 52 is provided therein with a locking body 60, which is a cylindrical body, and a rectangular hole corresponding to the locking body. The thickness of the locking shifting block is smaller than the diameter of the locking body, and the locking body can move in the locking body guide hole, so that the locking body protrudes out of the inner diameter of the locking shifting block or the outer diameter of the locking shifting block. The first valve flap drive is provided with a shifting block mounting slot 55 in which a locking shifting block 51 is fixed by a bolt 56.
The locking groove 22 of the driving head is an arc-shaped groove corresponding to the locking body.
The valve body is provided with a first valve cover 12, the first valve cover is provided with a locking guide block 13, the locking guide block 13 is a segment of a sector, the locking guide block is provided with a sector 15, and one end of the locking guide block 13 is provided with an arc-shaped unlocking groove 11. The locking dog 51 is arranged between the sector 15 of the locking guide and the driver head 24.
In the rotational path R1 of the first flap drive, the locking body is moved along the segment 15 of the locking guide. The locking body is constrained in the locking groove by the sector 15 of the locking guide block, locking the connection between the first flap actuator, which rotates synchronously with the valve stem, the valve core and the drive head, and the drive head. When the first valve flap driving member is rotated to the closing position, the position of the locking body corresponds to the unlocking groove 11, and the locking body can be moved into the unlocking groove, i.e., the locking body can be located in the space between the unlocking groove 11 and the locking body guide hole 52.
As shown in fig. 4 to 10, the valve core can drive the first valve flap driver to rotate in a rotation stroke R1 between an opening position (shown in fig. 4) and a closing position (shown in fig. 6), and the second valve flap driver and the two sealing valve flaps also rotate synchronously. In this process, the locking body is inserted into the locking groove 22, and the other side of the locking body moves along the inner wall of the locking guide 13, and the locking body locks the connection between the first flap driver and the spool, and the spool can drive the first flap driver.
The closing process of the valve is as follows: the valve spool rotates the first flap actuator from an open position (as shown in fig. 4) to a closed position, as shown in fig. 5.
When the first flap driver is rotated to the closing position, the first flap driver stops rotating in the closing direction due to the restriction of the stopper post 85, and the position of the locking body 60 corresponds to the unlocking groove 11, that is, the unlocking groove 11 is at the locking body removing end of the locking guide, as shown in fig. 6.
The valve core continues to rotate towards the closing direction, the arc-shaped locking groove 22 pushes the locking body to move into the unlocking groove 11 and disengage from the locking groove 22, the locking body unlocks the connection between the first valve clack driving piece and the valve core, the first valve clack driving piece does not rotate along with the valve core any more, and the valve core can independently rotate towards the closing direction relative to the first valve clack driving piece. At the same time, the locking body locks the connection between the first flap driver and the valve body (via the first bonnet 12 and the locking guide 13), i.e. the first flap driver is circumferentially constrained in the closed position against rotation relative to the valve body, while the unlocking slot 11 still allows the locking body to move along the axis of rotation of the spool along with the first flap driver, as shown in fig. 7.
The spool then continues to rotate in the closing direction, at which time the cylindrical surface (28) of the drive head restrains the lockout body, holding the lockout body in the lockout slot. The valve core drives the first valve clack driving element 50 to move upwards along the valve core rotation axis through the first driving shaft 26, the valve core drives the second valve clack driving element 40 to move downwards along the valve core rotation axis through the second driving shaft 27, and the first valve clack driving element 50 and the second valve clack driving element 40 drive the two side sealing valve clacks 80 to press the valve seats 86, so that forced sealing is realized, as shown in fig. 8.
The valve opening is the reverse process of the valve closing, the valve core rotates towards the opening direction, the valve core drives the first valve clack driving piece 50 to move upwards along the rotation axis of the valve core through the first driving shaft 26, the valve core drives the second valve clack driving piece 40 to move downwards along the rotation axis of the valve core through the second driving shaft 27, the second valve clack driving piece 40 and the first valve clack driving piece 50 drive the sealing valve clacks 80 at two sides to be separated from the valve seat, the forced sealing is released, a proper gap is formed between the sealing valve clack 80 and the valve seat, and the valve seat and the sealing valve clacks can rotate without friction, as shown in fig. 4. When the spool is rotated to a position where the locking groove 22 corresponds to the locking body 60, as shown in fig. 9, the opening block 23 moves the locking block 51 in the opening direction at the side edge 58 of the locking block, and the locking block pushes the locking body 60. The locking body 60 is pushed by the locking dial 51 and the arc-shaped surface of the unlocking groove 11 together into the space between the locking groove 22 and the locking body guide hole 52, and the locking body locks the connection between the first valve clack driving member and the valve core again, as shown in fig. 10. The valve core continues to rotate in the opening direction, and drives the first valve clack driving piece, the second valve clack driving piece and the sealing valve clack to rotate to the opening position, namely the position shown in fig. 4.
The invention improves the operating device of the forced sealing valve, adopts the locking shifting block, the driving head provided with the locking groove, the valve body provided with the unlocking groove and the cylindrical locking body, and the driving head is fixedly arranged at the end head of the valve core, so that the operating structure is simpler and more stable, the operating performance of the locking structure can be effectively improved, the stress state and the wear resistance of the locking structure are improved, and the service life of the operating device is prolonged.
The second embodiment:
as shown in fig. 11 to 14, a positive sealing valve operating device. This embodiment is an improvement of the first embodiment.
In this embodiment, the valve stem 30 is connected to the second drive shaft 27 of the valve cartridge, and the drive head 24, the first flap drive 50, and the first bonnet 12 are disposed on the first drive shaft 26 side of the valve cartridge. The driving head 24 is fixedly connected with the end of the first driving shaft of the valve core through a bolt 25, and the valve rod drives the valve core and the driving head to synchronously rotate.
The first bonnet is secured to the valve body by bolts 14 (see fig. 15).
This embodiment sets up valve rod and first valve clack driving piece respectively in the both sides of valve body, has avoided influencing each other with the valve rod structure, makes operating means have bigger effective space.
In this embodiment, the structure of the detachable first valve cover is adopted, and by using the excellent performance of the DBB forced seal of the valve, when the valve is closed, and the valve cavity pressure is firstly released through the blowoff valve 70 under the condition that the pressure of the valve on-line and the pipeline is kept, so that the first valve cover can be very safely detached, thereby realizing the on-line maintenance and repair of the DBB forced seal valve, such as the replacement of a worn locking body. And the valve cavity can be conveniently desilted, the reliability of the operating device is further improved, and the service life of the operating device is further prolonged. By adopting the assembly structure of the first valve clack driving piece and the locking shifting block and the assembly structure of the valve core and the driving head, the overall structure size of the valve can be reduced, and the replacement of the parts can be realized by the online pressure of the valve.
Example three:
fig. 15 and 16 show a positive seal valve operating device. This embodiment is an improvement of the second embodiment.
Because the first flap driving member and the valve stem are respectively disposed on two sides of the valve core, the valve is usually installed with the valve stem facing upward, the first flap driving member is usually located at the lower portion of the valve when the valve is installed, and during long-term use of the DBB forced sealing valve, deposition of some impurities is inevitably generated at the bottom of the valve, and effective operation of the operating device is also affected when the deposition is severe.
In this embodiment, the valve body is provided with a blow-off valve 70.
The waste valve 70 may be disposed at a position of the valve body corresponding to the first flap actuator, as shown in fig. 9.
A waste valve 70 may also be provided on the first valve cover. As shown in fig. 10.
The blowoff valve can realize the blowdown of regularity, and the impurity of discharge valve bottom keeps the inside cleanness of valve, makes the valve keep good operating condition.
Claims (9)
1. A positive sealing valve operating device comprising a valve body (10), a valve cartridge (20), and a valve stem (30); the valve core is provided with a first driving shaft (26) and a second driving shaft (27), and is characterized in that the first driving shaft is provided with a driving head (24), the first driving shaft is connected with a first valve clack driving piece (50), the first valve clack driving piece is provided with a locking shifting block (51), the locking shifting block is provided with a locking body guide hole (52), a locking body (60) is arranged in the locking body guide hole, the locking body is a cylinder, the driving head is provided with a locking groove (22), the first valve clack driving piece rotates in a rotation stroke between an opening position and a closing position, in the rotation stroke of the first valve clack driving piece, the locking body is embedded in the locking groove and locks the connection between the first valve clack driving piece and the driving head, and the valve core drives the first valve clack driving piece to rotate; the valve body is provided with an unlocking groove (11), after the first valve clack driving piece rotates to a closed position, the locking body moves into the unlocking groove and is separated from the locking groove, the locking body unlocks the connection between the first valve clack driving piece and the driving head, and the valve core rotates relative to the first valve clack driving piece.
2. A positive seal valve operating device according to claim 1, characterized in that the valve body is provided with locking guides (13) provided with sectors (15); the driving head is provided with a cylindrical surface (28), the locking groove (22) is arranged on the cylindrical surface of the driving head, and the locking groove is an arc-shaped groove corresponding to the locking body (60); the locking shifting block is a fan-shaped block protruding out of the end face (57) of the first valve clack driving piece, the locking shifting block (51) is arranged between the locking guide block (13) and the driving head (24), and the locking body guide hole (52) is a hole corresponding to the locking body; the locking guide segments (15) constrain the locking body in the locking slot, locking the connection between the first flap actuator and the drive head; a cylindrical surface (28) of the actuation head constrains the latch body in the unlatching slot, latching the connection between the first valve flap actuation member and the valve body.
3. A positive seal valve operating device according to claim 2, characterized in that the actuator head is provided with an opening dial (23) which protrudes from the cylindrical surface of the actuator head, the opening dial shifting the locking dial in an opening direction at the side (58) of the locking dial.
4. A positive seal valve operating device according to claim 2, characterized in that the valve body is provided with a first valve cover (12), the locking guide (13) being provided on the first valve cover, the locking body moving along the locking guide during the rotational stroke of the first flap actuator, the locking body moving out of the locking guide after the first flap actuator has been rotated to the closed position, the locking guide being provided with an arc-shaped groove constituting the unlocking groove (11) at the moving-out end of the locking body.
5. A positive sealing valve operating device according to claim 1, characterized in that the first valve flap actuating member is provided with a dial mounting groove (55), the locking dial (51) being fixed in the dial mounting groove.
6. A positive seal valve operating device according to claim 1, characterized in that the actuating head (24) is fixedly mounted on the end of the first actuating shaft (26), and the valve rod (30) is connected to the actuating head, which causes the actuating head and the valve element to rotate synchronously.
7. A positive sealing valve operating device according to claim 1, characterized in that the valve rod (30) is connected to the second drive shaft (27) of the valve element, the drive head is fixedly mounted on the end of the first drive shaft by means of a bolt (25), and the valve rod drives the valve element and the drive head to rotate synchronously.
8. A positive seal valve operating device according to claim 1, characterized in that the valve body is provided with a blow-off valve (70).
9. A positive sealing valve operating device according to claim 1, wherein the positive sealing valve operating device is an operating device of a DBB positive sealing valve, the valve element (20) is provided with a flow channel (21), the first actuating shaft (26) and the second actuating shaft (27) are respectively arranged at two sides of the flow channel, the second actuating shaft (27) is connected with a second flap actuating member (40), when the valve element rotates relative to the first flap actuating member, the first actuating shaft and the second actuating shaft drive the first flap actuating member (50) and the second flap actuating member (40) to move along the rotation axis of the valve element, and the first flap actuating member and the second flap actuating member drive the sealing flap (80) to press against or separate from the valve seat (86).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319032.XA CN112361012B (en) | 2020-11-23 | 2020-11-23 | Forced sealing valve operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319032.XA CN112361012B (en) | 2020-11-23 | 2020-11-23 | Forced sealing valve operating device |
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| CN112361012A CN112361012A (en) | 2021-02-12 |
| CN112361012B true CN112361012B (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011319032.XA Active CN112361012B (en) | 2020-11-23 | 2020-11-23 | Forced sealing valve operating device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1354260A (en) * | 1971-03-23 | 1974-06-05 | Effebi Sas | Valve and/or stopcock in fluid circuits |
| CN101067457A (en) * | 2007-03-28 | 2007-11-07 | 赵明 | Reduced bidirectional strength closed high temperature ball valve |
| CN102966754A (en) * | 2011-08-29 | 2013-03-13 | 王姝 | Valve of eccentric circle opening combined valve core |
| CN204164404U (en) * | 2014-09-02 | 2015-02-18 | 刘海亮 | The forced seal valve of eccentric two spherical angle stroke operation |
| CN105370909A (en) * | 2014-09-02 | 2016-03-02 | 刘海亮 | Forced seal valve capable of conducting eccentric double-spherical-angle stroke operation |
| CN111043344A (en) * | 2019-12-13 | 2020-04-21 | 淄博沃泰斯石化设备有限公司 | Lockpin operating device |
-
2020
- 2020-11-23 CN CN202011319032.XA patent/CN112361012B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1354260A (en) * | 1971-03-23 | 1974-06-05 | Effebi Sas | Valve and/or stopcock in fluid circuits |
| CN101067457A (en) * | 2007-03-28 | 2007-11-07 | 赵明 | Reduced bidirectional strength closed high temperature ball valve |
| CN102966754A (en) * | 2011-08-29 | 2013-03-13 | 王姝 | Valve of eccentric circle opening combined valve core |
| CN204164404U (en) * | 2014-09-02 | 2015-02-18 | 刘海亮 | The forced seal valve of eccentric two spherical angle stroke operation |
| CN105370909A (en) * | 2014-09-02 | 2016-03-02 | 刘海亮 | Forced seal valve capable of conducting eccentric double-spherical-angle stroke operation |
| CN111043344A (en) * | 2019-12-13 | 2020-04-21 | 淄博沃泰斯石化设备有限公司 | Lockpin operating device |
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|---|---|
| CN112361012A (en) | 2021-02-12 |
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