CN114838157A - Side-mounted high-pressure ball valve - Google Patents
Side-mounted high-pressure ball valve Download PDFInfo
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- CN114838157A CN114838157A CN202210755505.3A CN202210755505A CN114838157A CN 114838157 A CN114838157 A CN 114838157A CN 202210755505 A CN202210755505 A CN 202210755505A CN 114838157 A CN114838157 A CN 114838157A
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- 238000000034 method Methods 0.000 claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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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
- F16K29/00—Arrangements for movement of valve members other than for opening and closing the valve, e.g. for grinding-in, for preventing sticking
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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
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—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
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention relates to a side-mounted high-pressure ball valve, wherein a filling body is arranged in a valve rod of the ball valve, a through guide groove is formed in the filling body, and a protruding body is arranged on a base. When the ball valve generates a lag angle in the using process, the driving rod is driven to axially move along the valve rod by controlling the power device, so that when the driving rod pushes the filling body to move downwards, the filling body deforms along the radial direction of the valve rod, the bearing section of the valve rod also deforms along the radial direction of the valve rod, and the bearing surface of the bearing section contacts with the bearing surface of the ball valve body again at the moment, so that the lag angle of the ball valve is eliminated.
Description
Technical Field
The invention belongs to the field of valves, and particularly relates to a side-mounted high-pressure ball valve.
Background
The side-mounted high-pressure ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical engineering and the like, is mainly used as a valve for cutting off, distributing and changing the flow direction of a medium in a pipeline, and is opened or closed by rotating a valve rod. In such a ball valve, when the valve stem is rotated, a driving force is generated at a contact surface between the valve stem and the ball valve body, and the ball valve body is rotated against a resistance force generated by a fluid pressure to open the valve. During rotation of the ball valve body, high stress concentrations occur at the opposite corners of the valve stem to ball valve body interface. In the frequent opening and closing process of the ball valve body, the relative angle of the contact surface of the valve rod and the ball valve body is easy to deform, so that a hysteresis angle is generated in the opening or closing process of the ball valve body, namely, the valve rod can rotate for a section of idle stroke and then drive the ball valve body to open or close, and the service performance of the ball valve is seriously influenced.
However, the high-pressure ball valve is mostly used in the field transportation environment with rare people, so that the ball valve cannot be detected and maintained in real time by a maintainer. Also, for some important ball valves in a transportation pipeline, long downtime is not allowed. Therefore, it is very important how to complete the correction of the hysteresis angle in a short time or without mounting and dismounting the ball valve.
Disclosure of Invention
To solve the problems in the prior art, an object of the present invention is to provide a side-mounted high-pressure ball valve, which can effectively reduce or eliminate the lag angle of the ball valve in a short time or without disassembling the ball valve, and improve the service performance of the ball valve.
In order to achieve the above purpose, the invention provides the following technical scheme:
a side-mounted high-pressure ball valve comprises a valve body; the two valve covers are arranged at the left end and the right end of the valve body; the top cover is arranged on the upper side of the valve body; the valve comprises a valve seat and a ball valve body which are arranged in the valve body, wherein one end of the valve seat is abutted against the valve cover, and the other end of the valve seat is abutted against the ball valve body; the valve rod is in transmission connection with the ball valve body, one end of the valve rod is inserted into the ball valve body, the other end of the valve rod penetrates out of the valve cover, and when the valve rod is driven to rotate, the valve rod drives the ball valve body to rotate around the valve seat; the valve rod is internally provided with an installation groove, and a first base, a filling body, a top block and a driving rod are sequentially arranged in the installation groove from bottom to top; one side of the filling body is abutted against the first base, and the other side of the filling body is contacted with the top block; the first base comprises a first base, a first protruding body is arranged on the first base, the width of two ends of the first protruding body is larger than that of the middle of the first protruding body, the filling body comprises a guide groove which is arranged in a penetrating mode, and the first protruding body is clamped in the guide groove; the power device drives the driving rod to move axially along the valve rod, and pushes the filling body through the ejector block, so that the filling body deforms along the radial direction of the valve rod, and further, the bearing section of the valve rod deforms along the radial direction of the valve rod, and therefore the lag angle between the valve rod and the ball valve body is eliminated.
Preferably, the top block comprises a butt plate and a first connecting body, the butt plate has a shape matched with the filling body, and the first connecting body is abutted with the driving rod; the first protrusion has a first contact surface, the guide groove has a second contact surface, and the first contact surface abuts against the second contact surface when the drive lever pushes the top block.
Preferably, the ball valve is further provided with a sensor for detecting the hysteresis angle produced by the ball valve in use, and the control means controls the power means to move in dependence on the received hysteresis angle detected by the sensor.
Preferably, the control device is specifically configured to perform the following control process: the control device controls the power device to drive the driving rod to move along the axial direction of the valve rod by a preset displacement amount according to the received lag angle detected by the sensor, and the control device receives the lag angle detected by the sensor in real time; after the driving rod moves for a preset displacement along the axial direction, if the lag angle still exists, the control device continues to drive the driving rod to move for the preset displacement along the axial direction of the valve rod, and the control device receives the lag angle detected by the sensor in real time; the above control process is repeated until the lag angle is eliminated.
A side-mounted high-pressure ball valve comprises a valve body; the two valve covers are arranged at the left end and the right end of the valve body; the top cover is arranged on the upper side of the valve body; the valve seat and the ball valve body are arranged in the valve body, one end of the valve seat is abutted against the valve cover, and the other end of the valve seat is abutted against the ball valve body; the valve rod is in transmission connection with the ball valve body, one end of the valve rod is inserted into the ball valve body, the other end of the valve rod penetrates out of the valve cover, and when the valve rod is driven to rotate, the valve rod drives the ball valve body to rotate around the valve seat; the valve rod is internally provided with an installation groove, and a filling body, a second base and a driving rod are sequentially arranged in the installation groove from bottom to top; the second base comprises a second base, one side of the second base, facing the filling body, is provided with a second convex body, the other side of the second base is provided with a second connecting body, and the second connecting body is abutted to the driving rod; the width of the two ends of the second bulge is larger than that of the middle of the second bulge, the filling body comprises a guide groove which is arranged in a penetrating way, and the second bulge is clamped in the guide groove; and the power device drives the driving rod to axially move along the valve rod and pushes the second base to axially move, so that the filling body is deformed along the radial direction of the valve rod, and the bearing section of the valve rod is further deformed along the radial direction of the valve rod, so that the lag angle between the valve rod and the ball valve body is eliminated.
Preferably, the second protrusion and the guide groove are provided with contact surfaces, and when the driving rod pushes the second base, the contact surfaces of the second protrusion and the guide groove are abutted; the ball valve body is provided with a boss, a groove for mounting the bearing section is axially arranged along the boss, the depth of the groove is greater than the height of the boss, and the ratio of the width of the mounting groove arranged in the valve rod to the width of the bearing section is 0.5-0.6.
Preferably, the second protrusion disposed on the second base has a curved surface shape, and a plane section connected to an end of the curved surface shape, and an equation of a cross-sectional curve of the curved surface shape is:
in the formula:Lis the length of the load bearing segment;hthe width of the guide groove in the filling body;θis the lag angle.
Preferably, the ball valve is further provided with a sensor for detecting the hysteresis angle produced by the ball valve in use, and the control means controls the power means to move in dependence on the received hysteresis angle detected by the sensor.
Preferably, the control device is specifically configured to perform the following control process: the control device controls the power device to drive the driving rod to move along the axial direction of the valve rod by a preset displacement amount according to the received lag angle detected by the sensor, and the control device receives the lag angle detected by the sensor in real time; after the driving rod moves for a preset displacement along the axial direction, if the lag angle still exists, the control device continues to drive the driving rod to move for the preset displacement along the axial direction of the valve rod, and the control device receives the lag angle detected by the sensor in real time; the above control process is repeated until the lag angle is eliminated.
Compared with the prior art, the side-mounted high-pressure ball valve provided by the invention has the following beneficial technical effects:
1. in the invention, the filling body is arranged in the valve rod, the penetrating guide groove is arranged on the filling body, and the bulge body is arranged on the base. When the ball valve generates a lag angle in the using process, the driving rod is driven to axially move along the valve rod by controlling the power device, so that the filling body expands and deforms along the radial direction of the valve rod, the bearing section of the valve rod also deforms along the radial direction of the valve rod, and the bearing surface of the bearing section is fully contacted with the ball valve body, so that the lag angle of the ball valve is eliminated. The embodiment provided by the invention can effectively reduce or eliminate the lag angle of the ball valve in a short time or under the condition of not dismounting the ball valve, not only solves the technical problem that the ball valve in the prior art cannot be detected and maintained in real time, improves the service performance of the ball valve, but also avoids the shutdown maintenance of important transportation pipelines.
2. In order to effectively eliminate the hysteresis angle in the case where the bearing section is mostly drum-shaped after the failure of the valve stem, in a preferred embodiment of the present invention, the outer shape of the convex body is designed, and the convex body is provided with a curved outer shape and a flat section connected to an end of the curved outer shape, so that the deformed portion of the bearing section can be more efficiently restored to a state where the hysteresis angle is eliminated. And the concave curved section can avoid extruding the part which is not deformed in the middle, thereby obviously improving the service performance of the ball valve.
3. In a preferred embodiment of the present invention, a sensor is further disposed on the ball valve, the sensor is used for detecting a lag angle generated during the use of the ball valve, and the control device controls the power device to drive the driving rod to move a predetermined displacement along the axial direction of the valve rod according to the lag angle detected by the received sensor, so as to eliminate the lag angle. Therefore, the ball valve can remotely and accurately eliminate the lag angle, the defect that the ball valve in the prior art cannot be detected and maintained in real time is overcome, unnecessary damage to the ball valve is avoided, and the durability of the ball valve is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a side-mounted high pressure ball valve;
FIG. 2 is a schematic view of a valve stem of a side-mounted high pressure ball valve under load;
FIG. 3 is a schematic structural view of a side-mounted high pressure ball valve of the present invention;
FIG. 4 is a schematic structural view of a side-mounted high pressure ball valve of the present invention;
FIG. 5 is a partial schematic view of a side-mounted high pressure ball valve of the present invention;
FIG. 6 is a schematic structural view of a side-mounted high pressure ball valve according to another embodiment of the present invention;
FIG. 7 is a partial schematic view of a side mounted high pressure ball valve according to another embodiment of the present invention;
FIG. 8 is a partial schematic view of a side mounted high pressure ball valve according to yet another embodiment of the present invention;
FIG. 9 is a schematic view of a second base according to yet another embodiment of the present invention.
Wherein, the meaning of the notation symbols in the figure is as follows:
1. a valve cover; 2. a valve seat; 3. a valve body; 4. a ball valve body; 5. a top cover; 6. a valve stem; 41. a boss; 61. a first base; 62. a filler; 63. a top block; 64. a drive rod; 65. a load-bearing section; 66. a second base; 611. a first base; 612. a first projection; 613. a first contact surface; 621. a guide groove; 622. a second contact surface; 631. a resisting plate; 632. a first connecting body; 661. a second base; 662. a second projection; 663. a second connector; 6621. the shape of a curved surface; 6622. a planar segment.
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 of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-5, the present invention provides a side-mounted high pressure ball valve, comprising: a valve body 3; two valve covers 1 arranged at the left end and the right end of the valve body 3; a top cover 5 disposed on the upper side of the valve body 3; the valve seat 2 and the ball valve body 4 are arranged in the valve body 3, one end of the valve seat 2 is abutted against the valve cover 1, and the other end of the valve seat 2 is abutted against the ball valve body 4; and with valve rod 6 that ball valve body 4 transmission is connected, 6 one end of valve rod is inserted in ball valve body 4, and the other end is followed valve gap 5 is worn out, and when the drive when valve rod 6 rotates, valve rod 6 drive ball valve body 4 winds valve seat 2 rotates, and F is the sign of valve rod atress direction.
Wherein, an installation groove is arranged in the valve rod 6, and a first base 61, a filling body 62, a top block 63 and a driving rod 64 are sequentially arranged in the installation groove from bottom to top; one side of the filling body 62 is abutted against the first base 61, and the other side of the filling body is contacted with the top block 63; the first base 61 comprises a first base 611, a first protrusion 612 is arranged on the first base 611, the width of each end of the first protrusion 612 is greater than that of the middle of the first protrusion, the filling body 62 comprises a guide groove 621 arranged in a penetrating manner, and the first protrusion 612 is clamped in the guide groove 621; a power device (not shown in the figures) drives the driving rod 64 to move axially along the valve rod 6, and pushes the filling body 62 through the top block 63, so that the filling body 62 expands and deforms along the radial direction of the valve rod 6, and further, the bearing section 65 of the valve rod 6 deforms along the radial direction of the valve rod 6, thereby eliminating the lag angle between the valve rod 6 and the ball valve body 4. Wherein, the lag angle is the idle stroke angle rotated before the valve rod drives the ball valve body to act.
Preferably, the top block 63 comprises a resisting plate 631 and a first connecting body 632, the resisting plate 631 has a shape adapted to the filling body 62, and the first connecting body 632 abuts against the driving rod 64; the first protrusion 612 has a first contact surface 613, and the guide groove 621 has a second contact surface 622, so that when the drive lever 64 pushes the top block 63, the first contact surface 613 abuts against the second contact surface 622.
In the invention, the filling body is arranged in the valve rod, the penetrating guide groove is arranged on the filling body, and the bulge body is arranged on the base, so that the width of two ends of the bulge body is larger than that of the middle part of the bulge body. When the ball valve generates a lag angle in the using process, the driving rod is driven to axially move along the valve rod by controlling the power device, so that when the driving rod pushes the filling body to move downwards, the filling body expands and deforms along the radial direction of the valve rod, the bearing section of the valve rod also deforms along the radial direction of the valve rod, the bearing surface of the bearing section is fully contacted with the ball valve body, the lag angle of the ball valve is eliminated, and the using performance of the ball valve is improved.
Preferably, as shown in fig. 6 to 7, in order to ensure the bearing characteristics of the valve rod 6 and further simplify the structure, a filling body 62, a second base 66 and a driving rod 64 are sequentially arranged in the mounting groove of the valve rod 6 from bottom to top; the second base 66 comprises a second base 661, one side of the second base 661 facing the filling body 62 is provided with a second projecting body 662, and the other side is provided with a second connecting body 663, and the second connecting body 663 abuts against the driving rod 64; the width of the two ends of the second protruding body 662 is greater than the width of the middle of the second protruding body, the filling body 62 comprises a guide groove 621 which is arranged in a penetrating manner, and the second protruding body 662 is clamped in the guide groove 621.
Similar to the previous embodiment, when the driving lever 64 pushes the second base 66, the second protrusion 662 abuts the guide slot 621. The ball valve body 4 is provided with a boss 41, a groove for mounting the bearing section 65 is axially formed along the boss 41, the depth of the groove is greater than the height of the boss 41, and the ratio of the width D of the mounting groove formed in the valve rod 6 to the width D of the bearing section is 0.5-0.6. With the preferred embodiment, the top block can be omitted, the structure of parts is simplified, and the bearing characteristic of the valve rod is further ensured.
As shown in fig. 8, after the inventor finds that after the valve rod fails through long-term engineering practice, the bearing section 65 is mostly drum-shaped, and the maximum deformation occurs at the four corners of the bearing section 65, and the gaps between the four corners and the boss 41 are the most main reasons for the lag angle. Therefore, in order to avoid squeezing the undeformed portion and more efficiently return the deformed portion to the state where the hysteresis angle is eliminated, in the following preferred embodiment, the ball valve is further improved.
As shown in fig. 7-9, wherein fig. 8 shows the loading segment 65 becoming a drum (the filling body is not shown) after failure of the valve stem 6, fig. 9 shows a preferred second seat 66 arrangement of the present invention. The second protruding body 662 disposed on the second base 66 has a curved surface profile 6621, and a section of a plane segment 6622 connected to an end of the curved surface profile 6621, and an equation of a cross-sectional curve of the curved surface profile 6621 is:
in the formula:Lis the length of the load bearing segment;hthe width of the guide groove in the filling body;θis the lag angle.
After the bearing section is changed into a drum shape in the long-term use process, the deformed part in the bearing section can be more efficiently restored to the state of eliminating the hysteresis angle according to the arrangement mode of the second bulge body provided by the invention. And the concave curved section can avoid extruding the part which is not deformed in the middle, thereby obviously improving the service performance of the ball valve.
Preferably, in order to effectively eliminate the lag angle, the ball valve is further provided with a sensor (not shown) for detecting the lag angle generated by the ball valve in use, and the control device (not shown) controls the power device to move according to the received lag angle detected by the sensor.
Preferably, the control device is specifically configured to perform the following control process: the control device controls the power device to drive the driving rod 64 to move along the axial direction of the valve rod 6 by a preset displacement amount according to the received lag angle detected by the sensor, and the control device receives the lag angle detected by the sensor in real time; after the driving rod 64 moves by a predetermined displacement amount along the axial direction, if the lag angle still exists, the control device continues to drive the driving rod 64 to move by the predetermined displacement amount along the axial direction of the valve rod 6, and the control device receives the lag angle detected by the sensor in real time; repeating the above control process until the lag angle is eliminated; wherein the predetermined displacement amount may be determined experimentally.
The above embodiments are only used for illustrating the invention and not for limiting the technical solutions described in the invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement of the present invention is made; all such modifications and variations are intended to be included herein within the scope of this disclosure and the appended claims.
Claims (9)
1. A side-mounted high-pressure ball valve comprises a valve body; the two valve covers are arranged at the left end and the right end of the valve body; the top cover is arranged on the upper side of the valve body; the valve seat and the ball valve body are arranged in the valve body, one end of the valve seat is abutted against the valve cover, and the other end of the valve seat is abutted against the ball valve body; the valve rod is in transmission connection with the ball valve body, one end of the valve rod is inserted into the ball valve body, the other end of the valve rod penetrates out of the valve cover, and when the valve rod is driven to rotate, the valve rod drives the ball valve body to rotate around the valve seat;
the method is characterized in that: the valve rod is internally provided with an installation groove, and a first base, a filling body, a top block and a driving rod are sequentially arranged in the installation groove from bottom to top; one side of the filling body is abutted against the first base, and the other side of the filling body is contacted with the top block; the first base comprises a first base, a first protruding body is arranged on the first base, the width of two ends of the first protruding body is larger than that of the middle of the first protruding body, the filling body comprises a guide groove which is arranged in a penetrating mode, and the first protruding body is clamped in the guide groove; the power device drives the driving rod to move axially along the valve rod, and pushes the filling body through the ejector block, so that the filling body deforms along the radial direction of the valve rod, and further, the bearing section of the valve rod deforms along the radial direction of the valve rod, and therefore the lag angle between the valve rod and the ball valve body is eliminated.
2. The ball valve of claim 1, wherein: the top block comprises a supporting plate and a first connecting body, the supporting plate is in a shape matched with the filling body, and the first connecting body is abutted to the driving rod; the first protrusion has a first contact surface, the guide groove has a second contact surface, and the first contact surface abuts against the second contact surface when the drive lever pushes the top block.
3. The ball valve of claim 2, wherein: the ball valve is also provided with a sensor for detecting the hysteresis angle produced by the ball valve in use, and the control device controls the power device to move according to the received hysteresis angle detected by the sensor.
4. The ball valve of claim 3, wherein: the control device is specifically used for completing the following control processes: the control device controls the power device to drive the driving rod to move along the axial direction of the valve rod by a preset displacement amount according to the received lag angle detected by the sensor, and the control device receives the lag angle detected by the sensor in real time; after the driving rod moves for a preset displacement along the axial direction, if the lag angle still exists, the control device continues to drive the driving rod to move for the preset displacement along the axial direction of the valve rod, and the control device receives the lag angle detected by the sensor in real time; the above control process is repeated until the lag angle is eliminated.
5. A side-mounted high-pressure ball valve comprises a valve body; the two valve covers are arranged at the left end and the right end of the valve body; the top cover is arranged on the upper side of the valve body; the valve seat and the ball valve body are arranged in the valve body, one end of the valve seat is abutted against the valve cover, and the other end of the valve seat is abutted against the ball valve body; the valve rod is in transmission connection with the ball valve body, one end of the valve rod is inserted into the ball valve body, the other end of the valve rod penetrates out of the valve cover, and when the valve rod is driven to rotate, the valve rod drives the ball valve body to rotate around the valve seat;
the method is characterized in that: the valve rod is internally provided with an installation groove, and a filling body, a second base and a driving rod are sequentially arranged in the installation groove from bottom to top; the second base comprises a second base, one side of the second base, facing the filling body, is provided with a second convex body, the other side of the second base is provided with a second connecting body, and the second connecting body is abutted to the driving rod; the width of the two ends of the second bulge is larger than that of the middle of the second bulge, the filling body comprises a guide groove which is arranged in a penetrating way, and the second bulge is clamped in the guide groove; and the power device drives the driving rod to axially move along the valve rod and pushes the second base to axially move, so that the filling body is deformed along the radial direction of the valve rod, and the bearing section of the valve rod is further deformed along the radial direction of the valve rod, so that the lag angle between the valve rod and the ball valve body is eliminated.
6. The ball valve of claim 5, wherein: the second protrusion body and the guide groove are both provided with contact surfaces, and when the driving rod pushes the second base, the contact surfaces of the second protrusion body and the guide groove are abutted; the ball valve body is provided with a boss, a groove for mounting the bearing section is axially arranged along the boss, the depth of the groove is greater than the height of the boss, and the ratio of the width of the mounting groove arranged in the valve rod to the width of the bearing section is 0.5-0.6.
7. The ball valve of claim 6, wherein: the second bulge that sets up on the second base possesses the curved surface appearance to and with the plane section of the end connection of curved surface appearance, the equation of the section curve of curved surface appearance is:
in the formula:Lis the length of the load bearing segment;hthe width of the guide groove in the filling body;θis the lag angle.
8. The ball valve of claim 7, wherein: the ball valve is also provided with a sensor for detecting the hysteresis angle produced by the ball valve in use, and the control device controls the power device to move according to the received hysteresis angle detected by the sensor.
9. The ball valve of claim 8, wherein: the control device is specifically used for completing the following control processes: the control device controls the power device to drive the driving rod to move along the axial direction of the valve rod by a preset displacement amount according to the received lag angle detected by the sensor, and the control device receives the lag angle detected by the sensor in real time; after the driving rod moves for a preset displacement along the axial direction, if the lag angle still exists, the control device continues to drive the driving rod to move for the preset displacement along the axial direction of the valve rod, and the control device receives the lag angle detected by the sensor in real time; the above control process is repeated until the lag angle is eliminated.
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Cited By (1)
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|---|---|---|---|---|
| CN117869619A (en) * | 2024-03-12 | 2024-04-12 | 成都成高阀门股份有限公司 | Ball valve with novel valve rod coupling mechanism |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114838157B (en) | 2022-09-09 |
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Address after: No. 67, Section 1, Xueshan Avenue, Dayi County, Chengdu City, Sichuan Province, 611330 Patentee after: Chengdu Chenggao Valve Co.,Ltd. Patentee after: CHENGDU CHENGFENG VALVE Co.,Ltd. Patentee after: Chengfeng FLOW-TECH Group Address before: 611330 No. 67, Gongye Avenue, Dayi County, Chengdu, Sichuan Patentee before: CHENGDU CHENG GAO VALVE Co.,Ltd. Patentee before: CHENGDU CHENGFENG VALVE Co.,Ltd. Patentee before: CHENGDU CHENGFENG FLOW-TECH GROUP Co.,Ltd. |