CN109519548B - Hydraulic control butterfly valve - Google Patents
Hydraulic control butterfly valve Download PDFInfo
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- CN109519548B CN109519548B CN201710854639.XA CN201710854639A CN109519548B CN 109519548 B CN109519548 B CN 109519548B CN 201710854639 A CN201710854639 A CN 201710854639A CN 109519548 B CN109519548 B CN 109519548B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/22—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 crossing the valve member, e.g. butterfly 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a hydraulic control butterfly valve, which comprises a rotating disk, a butterfly valve bracket matched with the rotating disk, and a stroke feedback device arranged on the butterfly valve bracket, wherein the stroke feedback device also comprises: the circumferential groove is positioned at the circumferential position outside the rotating disc, the notch of the circumferential groove is opened towards the front, and the radial size of the groove bottom is larger than that of the notch; the radial size of one end of the connecting piece, which is positioned in the groove bottom, is larger than the size of the notch along the direction, so that the touch module is fixedly connected to the circumferential groove and can be adjusted in a sliding manner along the circumferential groove. The stroke feedback device of the structure can be flexibly adjusted according to the use environment and the use condition, the adjustment mode is simple and easy to realize, and the structure of the butterfly valve can not be damaged.
Description
Technical Field
The invention belongs to the field of fluid control, and particularly relates to a hydraulic control butterfly valve.
Background
The prior art liquid control butterfly valve, as shown in fig. 1, includes a rotating disc 1 ', a butterfly valve bracket 3' engaged with the rotating disc 1 ', and a stroke feedback device, where the stroke feedback device includes a stroke switch 22' and a touch module 21 'engaged therewith, and a cross-sectional structure of the rotating disc 1' is shown in fig. 2. When a user adjusts the position of the hydraulic control butterfly valve, the rotating disc 1 rotates and drives the touch module 21 'thereon to rotate, the touch module 21' is matched with the travel switch 22 ', and the travel switch 22' feeds back a signal to the control system to coordinate the operation of the controller. The correctness and the reliability of the action feedback signal of the hydraulic control butterfly valve have important significance on the safety and the stability of the operation of the whole unit. The touch module and the travel switch are fixed in the punched screw hole through screws. When the butterfly valve acts, the rotating disc rotates, the touch module on the rotating disc also rotates, and when the touch module reaches a specified position, the corresponding travel switch is touched, so that a feedback signal is output. The feedback signal should correspond to the actual switch position of the butterfly valve accurately. However, when the maintenance personnel position deviation or the butterfly valve is repaired, the actual position changes and other reasons, the feedback device signal and the actual switch position of the butterfly valve often cannot correspond to each other. At this time, the position of the butterfly valve stroke feedback device must be adjusted. Because the existing touch module and the travel switch are fixed in the punched screw hole through screws. Therefore, the screw hole needs to be re-opened during adjustment, and the corresponding old screw hole is discarded. Sometimes, the adjustment of the position cannot be done accurately at one time, and there may be multiple openings. This greatly affects the efficiency of the maintenance personnel. Meanwhile, the accuracy and the reliability of the action feedback signal of the hydraulic control butterfly valve are greatly reduced. Therefore, there is a need for an improved pilot operated butterfly valve feedback device system. Particularly in the working environment of a power plant with high requirements on the performance of a hydraulic control butterfly valve, a required circulating water system sends cooling seawater to a high-low pressure condenser to cool the exhaust steam of a low-pressure cylinder of a steam turbine so as to maintain the vacuum of the high-low pressure condenser and enable the steam-water circulation to be continued. In addition, the circulating water pump also provides cooling water source for oil cooler, air cooler, boiler ash flushing water and other equipment. The hydraulic control butterfly valve at the outlet of the circulating water pump is closely connected with the circulating water pump, so that the safety of the hydraulic control butterfly valve at the outlet of the circulating water pump is particularly important for a circulating water system. The correctness and the reliability of the action feedback signal of the hydraulic control butterfly valve have important significance on the safety and the stability of the operation of the whole unit.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a hydraulic control butterfly valve, which comprises a rotating disk, a butterfly valve bracket matched with the rotating disk, and a stroke feedback device arranged on the butterfly valve bracket, wherein the stroke feedback device comprises: the circumferential groove is positioned on the disc surface of the rotating disc close to the outer side, and the radial size of the groove bottom is larger than that of the groove opening; the travel switch is positioned on the butterfly valve bracket and used for controlling the transmission of a feedback signal; the touch module is positioned on the rotating disk, rotates along with the rotating disk and is used for touching the travel switch; and the connecting piece is used for realizing the fixed connection between the touch module and the circumferential groove, and the touch module can be adjusted in a sliding manner along the circumferential groove. The stroke feedback device of the structure can be flexibly adjusted according to the use environment and the use condition, the adjustment mode is simple and easy to realize, and the structure of the butterfly valve can not be damaged.
In order to solve the technical problems, the invention adopts the technical scheme that: a hydraulic control butterfly valve comprises a rotating disk, a butterfly valve bracket matched with the rotating disk, and a stroke feedback device arranged on the butterfly valve bracket, wherein the stroke feedback device comprises: the circumferential groove is positioned on the disc surface of the rotating disc close to the outer side, and the radial size of the groove bottom is larger than that of the groove opening; the travel switch is positioned on the butterfly valve bracket and used for controlling the transmission of a feedback signal; the touch module is positioned on the rotating disk, rotates along with the rotating disk and is used for touching the travel switch; and the connecting piece is used for realizing the fixed connection between the touch module and the circumferential groove, and the touch module can be adjusted in a sliding manner along the circumferential groove.
Through the design, the stroke feedback device of the hydraulic control butterfly valve can be properly adjusted according to the use condition and the use condition, and the adjustment cannot damage the structure of the hydraulic control butterfly valve.
The invention is further configured to: the stroke feedback device also comprises an auxiliary piece, wherein the auxiliary piece is used for assisting the movement and the positioning of the touch module, is positioned in the notch, is provided with a through hole and can be connected with the touch module into a whole through the connecting piece.
Through the design, the auxiliary piece is arranged on the rear side of the touch module and is positioned in the notch, so that the touch module is more stably connected with the circumferential groove, and unnecessary relative displacement between the touch module and the circumferential groove due to factors such as vibration is prevented.
The invention is further configured to: the rear part of the rotating disc is provided with a mounting hole corresponding to the circumferential groove, and the radial size of the mounting hole is larger than the size of one end, located at the bottom of the groove, of the connecting piece along the direction, so that one end, located at the bottom of the groove, of the connecting piece can be placed in the bottom of the circumferential groove from the mounting hole.
Through the design, the components of the hydraulic control butterfly valve are more convenient to assemble and easier to realize.
The hydraulic control butterfly valve can also be provided with a plug matched with the mounting hole according to actual conditions, and after the hydraulic control butterfly valve is assembled, the plug is plugged into the mounting hole to realize detachable sealing connection between the hydraulic control butterfly valve and the mounting hole.
The invention is further configured to: the connecting piece comprises two parts which are matched with each other; preferably, the connecting member is a screw and a nut which are matched with each other, the screw is inserted into a corresponding hole on the touch module from the front and penetrates through the notch, and the nut is placed into the bottom of the circumferential groove from the mounting hole and is screwed with the screw.
Through the design, reasonable installation among the components is realized, and the installation structure is simple, convenient and reasonable and is easy to control.
The invention is further configured to: the cross section of one end of the connecting piece, which is positioned in the groove bottom, is a polygonal column body, the cross section of the end of the connecting piece, which is positioned in the groove bottom, can be accommodated in the circumferential groove bottom, the radial dimension of the circumferential groove bottom is larger than the dimension of the polygonal column body along the direction, and the maximum radial dimension of the polygonal column body is larger than the radial dimension of the circumferential groove bottom, so that the polygonal column body can move along the circumferential direction of the circumferential groove, but cannot rotate around the polygonal column.
Through the design, relative rotation cannot occur between the connecting piece and the circumferential groove in the using process, and the stroke feedback device is favorably kept in installation accuracy.
The invention is further configured to: the auxiliary piece and the touch module are arranged into a whole.
Through the design, the structure of the hydraulic control butterfly valve is simpler and more convenient to install, and the matching problem caused by too many accessories is avoided.
The invention also provides a hydraulic control butterfly valve, which comprises a rotating disk, a butterfly valve bracket matched with the rotating disk and a stroke feedback device arranged on the butterfly valve bracket, wherein the stroke feedback device comprises: the circumferential groove is positioned on the disc surface of the butterfly valve bracket close to the inner side, and the radial size of the groove bottom is larger than that of the groove opening; the travel switch is positioned on the butterfly valve bracket and used for controlling the transmission of a feedback signal; the touch module is positioned on the rotating disk, rotates along with the rotating disk and is used for touching the travel switch; and the connecting piece is used for realizing the fixed connection between the travel switch and the circumferential groove, and the travel switch can be adjusted in a sliding manner along the circumferential groove.
Through the design, another feasible mode of the moving part of the stroke feedback device is realized, and the moving part can be adjusted according to the use condition.
The invention is further configured to: the travel feedback device also comprises an auxiliary part, the auxiliary part is used for assisting the movement and the positioning of the travel switch, the auxiliary part is positioned in the notch, and the auxiliary part is provided with a through hole and can be connected with the travel switch into a whole through the connecting piece;
preferably, a mounting hole is formed in the rear portion of the butterfly valve support corresponding to the circumferential groove, and the radial size of the mounting hole is larger than that of one end, located at the bottom of the groove, of the connecting piece, so that one end, located at the bottom of the groove, of the connecting piece can be placed in the bottom of the circumferential groove from the inside of the mounting hole.
Through the design, the auxiliary part is arranged on the rear side of the travel switch and positioned in the notch, so that the travel switch is more stably connected with the circumferential groove, and unnecessary relative displacement between the touch module and the circumferential groove due to factors such as vibration is prevented.
The invention is further configured to: the connecting piece, the touch module, the auxiliary piece and the auxiliary part are made of stainless steel.
Through the design, the connecting piece, the touch module, the auxiliary piece and the auxiliary part have the performances of rust prevention, high strength and the like, and the hydraulic control butterfly valve can be suitable for various liquid, oil and gas environments.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
1. The hydraulic control butterfly valve has a more reasonable stroke feedback device design, and the stroke feedback device has a simple structure, is flexible to use and easy to realize, and is suitable for the use environment of various hydraulic control butterfly valves;
2. the feedback device of the hydraulic control butterfly valve can realize any angle adjustment, and the adjustment method is simple and convenient and is more suitable for the use condition with strict requirements on stroke feedback precision;
3. the implementation of the adjustment operation of the feedback device of the hydraulic control butterfly valve completely does not affect the structural integrity and the service performance of the hydraulic control butterfly valve, is beneficial to maintaining the realization of the function of the hydraulic control butterfly valve, and does not affect the service life of the hydraulic control butterfly valve.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a hydraulic control butterfly valve in the prior art;
FIG. 2 is a schematic diagram of a hydraulic control butterfly valve in the prior art;
FIG. 3 is a schematic diagram of a hydraulic control butterfly valve according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a hydraulic control butterfly valve according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a hydraulic control butterfly valve according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a hydraulic control butterfly valve according to an embodiment of the invention;
FIG. 7 is a schematic diagram of a hydraulic control butterfly valve according to an embodiment of the invention;
FIG. 8 is a schematic diagram of a hydraulic control butterfly valve according to an embodiment of the invention;
fig. 9 is a schematic structural diagram of a hydraulic control butterfly valve in one embodiment of the invention.
In the figure: 1. rotating the disc; 21. a touch module; 22. a travel switch; 3. a butterfly valve support; 4. a circumferential groove; 41. a notch; 42. the bottom of the tank; 5. an auxiliary member; 61. a screw; 62. a nut; 7. mounting holes; A. represents the front; B. the radial direction is indicated.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 3 and 4, the pilot-controlled butterfly valve in the present embodiment includes a rotary disk 1, a butterfly valve holder 3 engaged with the rotary disk 1, and a stroke feedback device mounted thereon. This stroke feedback device includes: the circumferential groove 4 is positioned on the circumferential position of the outer side of the rotating disk 1, the notch 41 of the circumferential groove is opened towards the front, and the radial size of the groove bottom 42 is larger than that of the notch 41, so that the section of the circumferential groove is in an inverted T shape; and a travel switch 22 on the butterfly valve support 3 for controlling the transmission of the feedback signal; the touch module 21 is positioned on the rotating disk 1, rotates along with the rotating disk 1 and is used for touching the travel switch 22; and the two ends of the connecting piece are respectively connected with the touch module 21 and the groove bottom 42 of the circumferential groove 4, the radial dimension of one end of the connecting piece positioned in the groove bottom 42 is smaller than the dimension of the groove bottom 42 along the direction, and the radial dimension of one end of the connecting piece positioned in the groove bottom 42 is larger than the dimension of the notch 41 along the direction, so that the touch module 21 is fixed on the circumferential groove 4 in a sliding mode and can move along the circumferential groove 4. When the stroke feedback device is adjusted, the hydraulic control butterfly valve with the structure only needs to loosen the connecting piece, so that the touch module 21 can slide along the circumferential groove 4, when the touch module slides to a proper position, the connecting piece is fixed, the touch module 21 is firmly fixed on a certain position of the rotating disc 1, and then the hydraulic control butterfly valve can be normally used. When the use condition requires further adjustment of the stroke feedback device, the above operation is repeated. Therefore, the stroke feedback device of the hydraulic control butterfly valve in the embodiment has the advantages of simple structure, flexible use and easy realization, and is suitable for the use environments of various hydraulic control butterfly valves; and the method can realize arbitrary angle adjustment, is simple and convenient, and is more suitable for the use condition with strict requirements on stroke feedback precision.
Example two
As shown in fig. 5 and 6, the present embodiment is different from the above embodiments in that: the position of the rear part of the rotating disk 1 corresponding to the circumferential groove 4 is provided with a mounting hole 7, and the radial dimension of the mounting hole 7 is larger than the dimension of one end of the connecting piece at the groove bottom along the direction, so that the end of the connecting piece at the groove bottom can be placed in the circumferential groove bottom 42 from the mounting hole 7. And the connecting piece in this embodiment is a screw 61 and a nut 62 which are matched with each other, the screw 61 is inserted into a corresponding hole on the touch module 21 from the front and penetrates through the notch 41, and the nut 62 is placed into the groove bottom 42 of the circumferential groove 4 from the mounting hole 7 and is screwed with the screw 61.
The number of the mounting holes 7 in this embodiment may be one or more. In the case of only one mounting hole, all the connectors need to be mounted therefrom, moving to the preset position. When the number of the mounting holes is more than one, the mounting operation is more convenient and quick. The number and the arrangement mode of the specific mounting holes can be flexibly set according to the size and the use environment of the hydraulic control butterfly valve. Or, the number of the mounting holes can be properly increased in the use process of the hydraulic control butterfly valve, and at the moment, only the preset position needs to be properly punched. Technical scheme in this embodiment still be equipped with mounting hole complex stopper, the equipment is accomplished the back, fills in the mounting hole with the stopper, realizes dismantling sealing connection between the two.
EXAMPLE III
As shown in fig. 7 and 8, the present embodiment is different from the above embodiments in that: the stroke feedback device further comprises an auxiliary piece 5, wherein the auxiliary piece 5 is used for assisting the movement and positioning of the touch module 21, is arranged on the rear side of the touch module 21, is positioned in the notch 41, has a size slightly smaller than or equal to the size of the notch 41 in the radial direction along the rotating disk 1, is provided with a through hole, and can be connected with the touch module 21 into a whole through a connecting piece. The auxiliary member can prevent the screw 61 from inclining and shaking relative to the axial direction in the groove, thereby avoiding influencing the sensitivity of the stroke feedback device. Moreover, when the stroke feedback device is adjusted, the auxiliary part can reduce or even avoid the friction between other parts and the notch, and the dimensional precision and the structural precision of the parts can be kept more favorably. Especially under the use environment that the control accuracy demand is higher, the addition of auxiliary member is very necessary.
Example four
As shown in fig. 9, the present embodiment is different from the above-described embodiments in that: the auxiliary member 5 in this embodiment is provided with a through hole and has an inverted T-shaped cross section, so that the end of the auxiliary member 5 with a smaller radial dimension can be inserted into the slot, and the end with a larger radial dimension is clamped in the slot bottom. The design purpose of this structure is further to avoid the contact between functional part such as nut and the circumference groove, is favorable to the structure of circumference groove to keep on the one hand, avoids making the structure size of circumference groove change because of the adjustment to stroke feedback device, and on the other hand also can further strengthen the fixed at the axial to screw 61, makes it only atress in the fore-and-aft direction of liquid accuse butterfly valve, when guaranteeing its dimensional accuracy, has also ensured stroke feedback device's installation accuracy. The auxiliary member 5 under the structure can be inserted from the rear side of the rotating disk by the mounting hole.
EXAMPLE five
The present embodiment differs from the above embodiments in that: the auxiliary member and the touch module in this embodiment are integrally provided. Although the touch module structure of the structure is slightly more complicated than the touch module in the prior art, the matching between the touch module structure and the rotating disk has the beneficial effect of higher practicability. On the one hand, the structural integrity of the device is increased, and on the other hand, the device is convenient to disassemble and assemble.
In addition, the connecting pieces in this embodiment are screws and nuts, the section of the nut in the groove bottom is a polygonal column which can be accommodated in the groove bottom of the circumferential groove, the radial dimension of the groove bottom of the circumferential groove is larger than the dimension of the polygonal column along the direction, and the maximum radial dimension of the polygonal column is larger than the radial dimension of the groove bottom of the circumferential groove, so that the polygonal column can move circumferentially along the circumferential groove but cannot rotate around the polygonal column. Here, the radial dimension of the circumscribed circle of the polygonal cylinder is the maximum radial dimension of the polygonal cylinder itself, and is different from the radial direction marked in the drawing. This structure makes, no matter how the nut is adjusted, also keeps certain angle for the circumference groove all the time, avoids the nut to rotate around the axial of self in the circumference inslot, and then produces unnecessary friction, stress, and the nut is not hard up even, causes the hidden danger that reduces the installation accuracy.
EXAMPLE six
The present embodiment differs from the above embodiments in that: liquid accuse butterfly valve, including the rotary disk, with rotary disk complex butterfly valve support to and install the stroke feedback device on it, the stroke feedback device includes:
the circumferential groove is positioned on the circumferential position of the inner side of the butterfly valve bracket, the notch of the circumferential groove is opened to the front, and the radial size of the groove bottom is larger than that of the notch, so that the section of the circumferential groove is in an inverted T shape; the travel switch is positioned on the butterfly valve bracket and used for controlling the transmission of a feedback signal; the touch module is positioned on the rotating disk, rotates along with the rotating disk and is used for touching the travel switch; and the two ends of the connecting piece are respectively connected with the travel switch and the groove bottom of the circumferential groove, the radial size of one end of the connecting piece, which is positioned in the groove bottom, is smaller than the size of the groove bottom along the direction, and the radial size of one end of the connecting piece, which is positioned in the groove bottom, is larger than the size of the groove opening along the direction, so that the travel switch is fixedly connected on the circumferential groove in a sliding manner and can be adjusted in a sliding manner along the circumferential groove. It can be seen that the parts of the stroke feedback device in this embodiment are arranged in the opposite positions with respect to the installation positions in the above-mentioned several embodiments. The design mainly considers the structural conditions of the hydraulic control butterfly valve, under certain conditions, the size of the rotating disk is small, a circumferential groove is not easy to be arranged on the rotating disk, the part with a slightly complex structure is arranged on the butterfly valve support, and the butterfly valve support is large in size and relatively stable in structure, and implementation of the technical scheme is facilitated.
The materials of the connecting piece, the touch module, the auxiliary piece and the auxiliary part in the above embodiments are preferably stainless steel.
The hydraulic control butterfly valve introduced by the invention comprises a rotating disk, a butterfly valve bracket matched with the rotating disk, and a stroke feedback device arranged on the butterfly valve bracket, wherein the stroke feedback device also comprises: the circumferential groove is positioned at the circumferential position outside the rotating disc, the notch of the circumferential groove is opened towards the front, and the radial size of the groove bottom is larger than that of the notch, so that the section of the circumferential groove is in an inverted T shape; the radial size of one end of the connecting piece, which is positioned in the groove bottom, is larger than the size of the notch along the direction, so that the touch module is fixedly connected to the circumferential groove and can be adjusted in a sliding manner along the circumferential groove. The stroke feedback device with the structure can be flexibly adjusted according to the use environment and the use condition, the adjustment mode is simple and easy to realize, and the structure of the butterfly valve can not be damaged; the adjusting method is simple and convenient, and is more suitable for the use condition with strict requirements on the stroke feedback precision; the implementation of the adjustment operation of the feedback device of the hydraulic control butterfly valve completely does not affect the structural integrity and the service performance of the hydraulic control butterfly valve, is beneficial to maintaining the realization of the function of the hydraulic control butterfly valve, and does not affect the service life of the hydraulic control butterfly valve.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a liquid accuse butterfly valve, includes the rotary disk, with rotary disk complex butterfly valve support to and set up the stroke feedback device on it, its characterized in that, the stroke feedback device includes:
the circumferential groove is positioned on the disc surface of the rotating disc close to the outer side, and the radial size of the groove bottom is larger than that of the groove opening;
the travel switch is positioned on the butterfly valve bracket and used for controlling the transmission of a feedback signal;
the touch module is positioned on the rotating disk, rotates along with the rotating disk and is used for touching the travel switch;
the connecting piece is used for realizing the fixed connection between the touch module and the circumferential groove, and the touch module can be adjusted in a sliding way along the circumferential groove;
the stroke feedback device also comprises an auxiliary piece, the auxiliary piece is used for assisting the movement and the positioning of the touch module, the auxiliary piece is positioned in the notch, and a through hole is formed in the auxiliary piece and can be connected with the touch module into a whole through the connecting piece; the section of the auxiliary part is of an inverted T-shaped structure;
the connecting piece comprises two parts which are matched with each other;
the connecting piece is a screw and a nut which are matched with each other, the screw is inserted into a corresponding hole on the touch module from the front and penetrates through the notch, and the nut is arranged in the bottom of the circumferential groove and is screwed with the screw.
2. The pilot-controlled butterfly valve of claim 1, wherein the auxiliary piece is provided integrally with the activation module.
3. The pilot-controlled butterfly valve of claim 1, wherein a mounting hole is formed behind the rotary disk at a position corresponding to the circumferential groove, and the radial dimension of the mounting hole is larger than the dimension of the connecting piece at one end of the groove bottom along the direction, so that the connecting piece at one end of the groove bottom can be placed in the groove bottom of the circumferential groove from the mounting hole.
4. The pilot-controlled butterfly valve of claim 1, wherein the end of the connector located in the groove bottom has a polygonal cross-section that can be received in the groove bottom, and the radial dimension of the groove bottom is greater than the dimension of the polygonal column along the direction, and the maximum radial dimension of the polygonal column is greater than the radial dimension of the groove bottom, so that the polygonal column can move circumferentially along the groove but cannot move rotationally around the polygonal column.
5. A hydraulic control butterfly valve comprises a rotating disk, a butterfly valve bracket matched with the rotating disk and a stroke feedback device arranged on the butterfly valve bracket, and is characterized in that the stroke feedback device comprises:
the circumferential groove is positioned on the disc surface of the butterfly valve bracket close to the inner side, and the radial size of the groove bottom is larger than that of the groove opening;
the travel switch is positioned on the butterfly valve bracket and used for controlling the transmission of a feedback signal;
the touch module is positioned on the rotating disk, rotates along with the rotating disk and is used for touching the travel switch;
the connecting piece is used for realizing the fixed connection between the travel switch and the circumferential groove, and the travel switch can be adjusted in a sliding manner along the circumferential groove;
the travel feedback device further comprises an auxiliary piece, the auxiliary piece is used for assisting the travel switch in moving and positioning, the auxiliary piece is located in the notch, and a through hole is formed in the auxiliary piece and can be connected with the travel switch into a whole through the connecting piece; the section of the auxiliary part is of an inverted T-shaped structure;
the connecting piece comprises two parts which are matched with each other;
the connecting piece is a screw and a nut which are matched with each other, the screw is inserted into a corresponding hole on the touch module from the front and penetrates through the notch, and the nut is arranged in the bottom of the circumferential groove and is screwed with the screw.
6. The pilot-controlled butterfly valve of claim 5, wherein a mounting hole is formed behind the butterfly valve support at a position corresponding to the circumferential groove, and the mounting hole has a radial dimension larger than a radial dimension of the connector at the bottom end of the groove, so that the connector at the bottom end of the groove can be placed in the bottom of the circumferential groove from the mounting hole.
7. The pilot-controlled butterfly valve of any one of claims 1 to 6, wherein the connector, the trip module, and the auxiliary member are made of stainless steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854639.XA CN109519548B (en) | 2017-09-20 | 2017-09-20 | Hydraulic control butterfly valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854639.XA CN109519548B (en) | 2017-09-20 | 2017-09-20 | Hydraulic control butterfly valve |
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| CN109519548A CN109519548A (en) | 2019-03-26 |
| CN109519548B true CN109519548B (en) | 2021-04-23 |
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| CN201710854639.XA Active CN109519548B (en) | 2017-09-20 | 2017-09-20 | Hydraulic control butterfly valve |
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| CN100494968C (en) * | 2007-03-14 | 2009-06-03 | 西南交通大学 | Small load impact wear testing machine |
| CN203670970U (en) * | 2014-01-09 | 2014-06-25 | 中国神华能源股份有限公司 | Butterfly valve travel switch device and hydraulic control butterfly valve |
| CN205927922U (en) * | 2016-07-01 | 2017-02-08 | 天津众达精密机械有限公司 | Adjustable quick hold -down device |
| CN206114304U (en) * | 2016-09-29 | 2017-04-19 | 东风汽车有限公司 | Universal jig for fixing torsional rigidity experiment vehicle body |
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2017
- 2017-09-20 CN CN201710854639.XA patent/CN109519548B/en active Active
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