CN117628215A - Double-degree-of-freedom control combined valve core, sleeve control valve and method thereof - Google Patents
Double-degree-of-freedom control combined valve core, sleeve control valve and method thereof Download PDFInfo
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- CN117628215A CN117628215A CN202311590510.4A CN202311590510A CN117628215A CN 117628215 A CN117628215 A CN 117628215A CN 202311590510 A CN202311590510 A CN 202311590510A CN 117628215 A CN117628215 A CN 117628215A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 24
- 238000012856 packing Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a double-degree-of-freedom control combined valve core, a sleeve control valve and a method thereof, and relates to the field of control valves. The valve core assembly consists of a valve plug with a window and a sleeve. The sleeve control valve consists of a valve body, a valve seat, a valve cover, a valve rod, a threaded driver, an actuating mechanism and an actuating mechanism bracket. When the valve is used, the screw driver is screwed with external threads on the valve rod and is arranged at the center of the valve cover, and when the screw driver is arranged, the axial displacement of the actuating mechanism is converted into spiral motion by the screw driver, so that the circumferential angle position of the valve plug is changed; after the screw driver is detached, the actuating mechanism adjusts the axial movement position of the valve plug. Eventually, the valve plug is moved to a predetermined position. By moving the valve plug position, a two degree of freedom control of the fluid is achieved. The invention can improve the accuracy and the maximum adjustable ratio of the valve control under the condition of not changing the minimum stepping of the actuating mechanism.
Description
Technical Field
The invention relates to the field of control valves, in particular to a double-degree-of-freedom control combined valve core assembly with a threaded driver, a sleeve control valve and a method thereof.
Background
The control valve is a component which controls the opening of the valve core through an actuating mechanism to keep the process parameters such as fluid pressure, temperature, speed, flow and the like in a proper operation range. The valve is widely applied to national important equipment such as third-generation nuclear power units, large hydraulic platforms and the like, so the valve is also called as a throat of an industrial system. As a key matching component, localization of the high-performance key valve has important significance for equipment manufacturing industry in China. At present, the valve in China has large regulating precision and small adjustable ratio, and is difficult to meet the performance requirements of some extreme working conditions, such as high temperature and high pressure, supercritical, high pressure difference and large flow. Therefore, the hot problem and key problem of the current valve research are to develop the related research work of large valve adjustment ratio and high adjustment precision, provide a new thought for the design of the valve under extreme working conditions, and solve the problems and simultaneously are powerful measures for improving the international competitiveness of valve products.
Therefore, it is needed to provide a control valve capable of meeting the requirements of complex extreme working conditions and realizing large adjustable ratio and high-precision adjustment and a use method thereof.
Disclosure of Invention
The invention aims to provide a double-degree-of-freedom control combined valve core, a sleeve control valve and a method thereof based on the existing sleeve control valve structure. The invention modifies the structure of the traditional sleeve control valve, adjusts the structural shape of the valve plug, introduces the screw driver to increase the control freedom degree, realizes the double-freedom degree control of the axial linear motion and the circumferential rotary motion of the valve plug by the driving of the external actuating mechanism, further changes the flow characteristic of the valve, and realizes the high-adjustable high-precision adjustment of fluid.
The specific technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a dual-degree-of-freedom control combined valve core assembly, which comprises a valve plug and a sleeve, wherein the valve plug and the sleeve are sleeved in sequence from inside to outside, and the valve plug can move in the sleeve in an axial and circumferential sealing manner;
the valve plug is of a cylindrical structure with a hollow inside and an open bottom, a plurality of first throttling windows are uniformly formed in the side wall along the circumferential direction, a plurality of axial through holes for balancing axial pressure are formed in the top of the valve plug, and the top of the valve plug is used for being fixedly connected with a valve rod; the sleeve is of a cylindrical structure with two open ends, and a plurality of second throttling windows are uniformly formed in the side wall along the circumferential direction; the second orifice is of a size, shape and number consistent with the first orifice, and the first orifice and the second orifice can be fully coincident or fully staggered when the valve plug moves circumferentially and/or axially within the sleeve.
Preferably, the top and bottom of the valve plug are chamfered.
Preferably, a clearance fit is used between the valve plug and the sleeve.
In a second aspect, the present invention provides a sleeve control valve having any one of the two-degree-of-freedom control combination valve cartridge assemblies of the first aspect, further comprising a valve body, a valve seat, a valve cap, a valve stem, a threaded driver, an actuator, and an actuator bracket;
the top of the valve body is provided with a valve cover in a sealing way, and the sleeve is fixed in the valve body through the valve cover; the valve cover is detachably provided with a threaded driver, and the top of the valve cover is fixed with an executing mechanism through an executing mechanism bracket; one end of the valve rod is connected with the acting end of the executing mechanism, the valve rod can axially move under the pushing of the executing mechanism, and the other end of the valve rod passes through the threaded driver and is fixedly connected with the valve plug; the valve rod is in threaded screwing connection with the threaded driver, and the threaded driver is used for converting axial displacement of the actuating mechanism on the valve rod into spiral motion so as to drive the valve plug to rotate circumferentially; the valve plug and telescopic bottom are equipped with the disk seat of fixing on the valve body, and the disk seat is used for carrying out axial spacing to valve plug and telescopic, and when the valve plug removes to the minimum, the minimum of first throttle window and second throttle window is located same horizontal plane.
Preferably, annular sealing filler is adopted between the valve rod and the valve cover for sealing; the bottom of the sealing filler is provided with a filler gasket, and a thread driver is arranged above the sealing filler.
Preferably, the areas of the first throttling window and the second throttling window are smaller than the sectional area of the fluid inlet of the valve body.
Preferably, the sleeve is in clearance fit with the valve seat, the sleeve and the valve cover.
Preferably, the valve plug and the valve stem are bolted.
Preferably, the length of the external thread arranged on the outer side of the valve rod is larger than the axial stroke of the valve plug.
In a third aspect, the present invention provides a method for using the sleeve control valve according to any one of the second aspects, specifically as follows:
according to the actual application scene requirement of the sleeve control valve, firstly installing a screw driver, changing axial displacement generated by an actuating mechanism into a rotation angle by using the screw driver, and obtaining the actual rotation angle alpha=ωt of the valve rod by measuring the running time t of the actuating mechanism, wherein ω is the angle of the valve rod rotated in unit time under the action of the actuating mechanism when the screw driver is installed; because the valve rod and the valve plug rotate synchronously, alpha is the rotation angle of the valve plug, and the circumferential superposition area of the first throttling window and the second throttling window is adjusted; when the valve plug rotation angle is adjusted to a preset position, the threaded driver is detached, and the executing mechanism is used for generating axial displacement, so that the valve plug moves to the preset axial position, and the axial superposition area of the first throttling window and the second throttling window is adjusted;
when fluid enters from the inlet of the valve body, the fluid flows out from the outlet of the valve body through the valve seat from the bottom of the valve plug after passing through the superposition part of the first throttling window and the second throttling window; in the process, the axial position and the rotation angle of the valve plug are adjusted through the actuating mechanism, so that the opening degree of the valve is adjusted, and the control of the fluid flow is realized.
Compared with the prior art, the invention has the following beneficial effects:
the invention improves the traditional sleeve valve, so that the original single-degree-of-freedom control is changed into the double-degree-of-freedom control, the minimum unit of the area change of the throttle window of the valve is reduced under the condition that the minimum step of the actuating mechanism is not changed, and the effects of improving the adjustable ratio and the adjusting precision of the valve are realized. Compared with the existing double-freedom-degree sleeve valve, the invention reduces the number of the sleeves, simplifies the structure under the condition of not changing the adjusting principle, and is more convenient to manufacture, design and install.
Drawings
FIG. 1 is a schematic illustration of a two degree of freedom sleeve control valve configuration with a threaded driver.
FIG. 2 is a schematic illustration of a valve plug configuration; wherein, fig. (a) is a sectional view, fig. (b) is a front view, and fig. (c) is a plan view.
FIG. 3 is a schematic view of a sleeve construction; wherein, fig. (a) is a sectional view, fig. (b) is a front view, and fig. (c) is a plan view.
FIG. 4 is a schematic illustration of a valve stem construction; wherein, the figure (a) is a sectional view, and the figure (b) is a plan view.
FIG. 5 is a schematic view of a threaded driver configuration; wherein, fig. (a) is a sectional view, fig. (b) is a front view, and fig. (c) is a plan view.
FIG. 6 is a schematic diagram of a dual degree of freedom control combination valve cartridge assembly.
In the figure: valve body 1, valve seat 2, valve rod 3, valve plug 4, sleeve 5, valve gap 6, screw driver 7, actuating mechanism 8, actuating mechanism support 9, sealing packing 10, packing washer 11.
Detailed Description
The invention is further illustrated and described below with reference to the drawings and detailed description. The technical features of the embodiments of the invention can be combined correspondingly on the premise of no mutual conflict.
As shown in fig. 1, a schematic diagram of a dual-degree-of-freedom sleeve control valve according to the present invention is provided, wherein a dual-degree-of-freedom control combined valve core assembly with a threaded driver is included, and the combined valve core assembly mainly comprises a valve plug 4 and a sleeve 5. Wherein the outer wall of the valve plug 4 and the inner wall of the sleeve 5 adopt clearance fit, so that the valve plug 4 can axially and circumferentially move under the constraint of the inner wall of the sleeve 5, the axial movement of the valve plug 4 is provided by the actuating mechanism 8, and the circumferential rotation of the valve plug 4 is provided by converting the axial displacement of the actuating mechanism into screw movement by the screw driver 7.
The structure and connection of the components are described in detail below.
As shown in fig. 6, in the valve cartridge assembly of the present invention. As shown in fig. 2, the valve plug 4 has a cylindrical structure with a hollow interior and an open bottom, the side wall is uniformly provided with a plurality of first throttle windows along the circumferential direction, and the top is provided with a plurality of axial through holes, and the axial through holes are used for reducing the axial force when the actuating mechanism 8 pushes the valve rod 3 to drive the valve plug 4 to axially displace. The top of the valve plug 4 is fixedly connected with the valve rod 3, so that the valve plug 4 can move axially and circumferentially along with the valve rod 3. As shown in fig. 3, the sleeve 5 has a cylindrical structure with both ends of the top and bottom open, and the side wall is uniformly provided with a plurality of second throttle windows along the circumferential direction.
The second throttle windows are identical in size, shape and number to the first throttle windows, and the arrangement of the first throttle windows and the second throttle windows must ensure that the windows (i.e., the overlapping areas of the first throttle windows and the second throttle windows) can be fully opened (at which time the first throttle windows and the second throttle windows overlap) and fully closed (at which time the first throttle windows and the second throttle windows overlap) when the valve plug 4 performs circumferential rotation, and the windows (i.e., the overlapping areas of the first throttle windows and the second throttle windows) can be fully opened (at which time the first throttle windows and the second throttle windows overlap) and fully closed (at which time the first throttle windows and the second throttle windows overlap) when the valve plug 4 performs axial linear movement. That is, the layout of the first throttle window and the second throttle window should satisfy: when the valve plug 4 moves to the axially highest position, the highest position of the second throttle window should be lower than the lowest position of the first throttle window; there is an angular interval such that all throttle windows are completely covered when the valve plug 4 is axially rotated into this angular interval. In actual use, fluid enters from the inlet of the valve body 1, passes through the superposition part of the first throttling window and the second throttling window, and then flows out from the bottom of the valve plug 4 through the valve seat 2 and then flows out from the outlet of the valve body 1; in this process, the axial position and the rotation angle of the valve plug 4 are adjusted by the actuating mechanism 8, so that the opening degree of the sleeve valve can be adjusted, and the control of the fluid flow is realized.
As a preferred embodiment of the present invention, both the top and bottom of the valve plug 4 are chamfered for ease of installation. The valve plug 4 and the sleeve 5 are in clearance fit, and when the valve plug 4 moves axially and circumferentially, the outer wall of the valve plug should be closely attached to the inner wall of the sleeve 5.
Based on the above dual degree of freedom control combined valve core assembly, the invention also provides a sleeve control valve, as shown in fig. 1. The sleeve control valve mainly comprises a valve body 1, a valve seat 2, a valve cover 6, a valve rod 3, a threaded driver 7, an actuating mechanism 8 and an actuating mechanism bracket 9 besides the double-freedom-degree control combined valve core assembly.
The structure and connection of the components are described in detail below.
In the invention, a valve cover 6 is arranged on the top of a valve body 1 in a sealing way, an outward protruding lug part is arranged on the upper part of a sleeve 5 along the circumferential direction, and the lug part of the sleeve 5 is fixed in the valve body 1 through the valve cover 6. The valve cover 6 is detachably provided with a threaded driver 7, the top is fixed with an actuator bracket 9, and an actuator 8 is arranged on the actuator bracket 9. One end of the valve rod 3 extends out of the valve body 1 and is connected with the acting end of the actuating mechanism 8, and the valve rod 3 can move up and down axially under the pushing of the actuating mechanism 8. The other end of the valve rod 3 passes through the screw driver 7 and is fixedly connected with the top of the valve plug 4 positioned in the valve body 1. The valve rod 3 is connected with the screw driver 7 in a screwed mode, the screw driver 7 is used for converting axial displacement of the actuating mechanism 8 on the valve rod 3 into spiral motion, and accordingly the valve plug 4 is driven to rotate circumferentially, and the corner position is adjusted. That is, as shown in fig. 4, the valve rod 3 has a rod-shaped cylindrical structure, the top of which is connected to the actuator 8, the movement of which is controlled by the actuator 8, and the middle specific section of which is provided with external threads for screwing with the screw driver 7.
When the valve is specifically used, the actuating mechanism 8 is input through a computer signal, the actuating mechanism 8 generates thrust to push the valve rod 3, the valve plug 4 is driven to do threaded motion under the constraint of the threaded driver 7, the angle of the valve plug 4 is read in real time by the Hall effect angle sensor, after the angle reaches the preset position, the threaded driver 7 is taken down, and the axial position of the valve plug 4 is adjusted by utilizing the actuating mechanism 8, so that the control effect on the fluid flow is achieved.
In actual use, in order to ensure that the valve rod can drive the valve rod to rotate circumferentially regardless of the axial position of the valve plug, the length of the external thread arranged on the outer side of the valve rod 3 should be longer than the axial stroke of the valve plug 4. That is, the threaded length of the valve stem 3 must be greater than the maximum axial lengths of the first and second throttle windows to ensure that the valve plug 3 can be rotationally adjusted in any axial position.
As a preferred embodiment of the present invention, as shown in fig. 5, the screw driver 7 has a stepped cylindrical structure, a threaded through hole is formed at the center thereof, and a plurality of through holes are uniformly formed around the threaded through hole for fixing it to the valve cap 6 by screwing with the external thread of the valve stem 3. The nominal diameter, the direction of rotation, the number of threads, the pitch, the teeth, etc. of the threads of the valve stem 3 and the thread driver 7 should be identical. The width and the height of the steps of the screw driver 7 are matched with the central through hole of the valve cover 6 to realize the fixation with the valve cover 6.
As a preferred embodiment of the invention, the valve rod 3 and the valve cover 6 are sealed by adopting annular sealing packing 10, the bottom of the sealing packing 10 is provided with a packing gasket 11, and the threaded driver 7 is arranged above the sealing packing. The method comprises the following steps: the outer wall of the sleeve 5 is provided with an annular slot for installing an O-shaped sealing ring, and the sleeve 5, the valve body 1, the sleeve 5 and the valve cover 6 are provided with sealing. The outer wall of the valve plug 4 is provided with an annular groove for installing an O-shaped sealing ring, and sealing is provided for the valve plug 4 and the sleeve 5. In the central through hole of the valve cap 6, a packing 10 is mounted between the valve cap 6 and the valve stem 3 to provide a seal for the valve stem 3 and the valve cap 6. The bottom of the valve seat 2 is provided with an annular ladder structure for installing an O-shaped sealing ring to provide sealing for the valve seat 2 and the valve body 1.
The annular sealing packing and the O-shaped ring in the invention are products which can be easily purchased in the market, and the connection mode can be checked by a person skilled in the art, and the technical teaching can be obtained through limited tests.
The areas of the first throttle window and the second throttle window are smaller than the sectional area of the fluid inlet of the valve body 1. The valve plug 4 and the valve rod 3 are connected by bolts. In order to allow the valve stem 3 to rotate the valve plug 4 under the action of the screw driver 7, the valve stem 3 should be rotatable about the active end of the actuator 8.
In the invention, the bottoms of the valve plug 4 and the sleeve 5 are provided with a valve seat 2 fixed on the valve body 1, the valve seat 2 is used for axially limiting the valve plug 4 and the sleeve 5, and when the valve plug 4 moves to the lowest point, the lowest positions of the first throttling window and the second throttling window are positioned on the same horizontal plane. That is, the valve seat 2 is mounted at the bottom of the valve body 1, the valve seat 2 is in a circular-ring-shaped ladder structure, the ladder is used for being matched with the valve plug 4 and the sleeve 5, the height of the ladder is used for ensuring that the lowest positions of the first throttling window and the second throttling window are consistent when the valve plug 4 moves to the lowest point, and the width of the ladder is used for determining the position of the sleeve 5.
As a preferred embodiment of the invention, a clearance fit is used between the sleeve 5 and the valve seat 2, and between the sleeve 5 and the valve cover 6.
Based on the sleeve control valve, the invention also provides a use method, which comprises the following steps:
the valve body 1, the valve seat 2, the valve rod 3, the valve plug 4, the sleeve 5, the valve cover 6, the threaded driver 7, the actuating mechanism 8, the actuating mechanism bracket 9, the sealing packing 10, the packing gasket 11 and other parts are firstly installed, and then the control valve is connected with an inlet pipeline and an outlet pipeline.
When the valve plug 4 is specifically used, the position of the valve plug 4 needs to be adjusted according to the actual application scene requirement of the sleeve control valve, the threaded driver 7 is firstly installed, the axial displacement generated by the actuating mechanism 8 is converted into spiral motion by the threaded driver 7, the valve plug 4 generates the rotation angle, the actual rotation angle alpha=ωt of the valve rod 3 can be measured by measuring the running time t of the actuating mechanism 8, wherein ω is the angle through which the valve rod 3 rotates in unit time under the action of the actuating mechanism 8 when the threaded driver 7 is installed. Because valve rod 3 and valve plug 4 fixed connection, consequently valve plug 4 and valve rod 3 synchronous rotation, alpha is valve plug 4 rotation angle, and then adjusts the circumference coincidence area of first throttle window and second throttle window. When the rotation angle of the valve plug 4 is adjusted to a preset position, the threaded driver 7 is detached, and the actuator 8 is used for generating axial displacement, so that the valve plug 4 moves to the preset axial position, and the axial superposition area of the first throttle window and the second throttle window is adjusted.
When fluid enters from the inlet of the valve body 1, the fluid passes through the superposition part of the first throttling window and the second throttling window and then flows out from the bottom of the valve plug 4 through the valve seat 2 and then flows out from the outlet of the valve body 1. In the process, the axial position and the rotation angle of the valve plug 4 are adjusted through the actuating mechanism 8 so as to realize the adjustment of the opening degree of the valve, thereby realizing the control of the fluid flow.
That is, the invention realizes that the maximum area of the throttle window is unchanged and the minimum surface is actively reduced by additionally arranging a window on the valve plug of the traditional sleeve valve under the condition of not changing the minimum stepping of the actuating mechanism, thereby realizing the control of double degrees of freedom and simultaneously improving the adjusting precision and the adjustable ratio of the valve.
The above embodiment is only a preferred embodiment of the present invention, but it is not intended to limit the present invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the equivalent substitution or equivalent transformation are within the protection scope of the invention.
Claims (10)
1. The double-degree-of-freedom control combined valve core assembly is characterized by comprising a valve plug (4) and a sleeve (5) which are sleeved in sequence from inside to outside, wherein the valve plug (4) can move in the sleeve (5) in an axial and circumferential sealing manner;
the valve plug (4) is of a cylindrical structure with a hollow inside and an open bottom, a plurality of first throttling windows are uniformly formed in the side wall along the circumferential direction, a plurality of axial through holes for balancing axial pressure are formed in the top of the valve plug (4), and the top of the valve plug (4) is fixedly connected with the valve rod (3); the sleeve (5) is of a cylindrical structure with two open ends, and a plurality of second throttling windows are uniformly formed in the side wall along the circumferential direction; the second throttle windows are identical in size, shape and number with the first throttle windows, and can be completely overlapped or completely staggered when the valve plug (4) moves circumferentially and/or axially in the sleeve (5).
2. A dual degree of freedom control combination valve cartridge assembly of claim 1 wherein the top and bottom of the valve plug (4) are chamfered.
3. A two degree of freedom control combination valve cartridge assembly according to claim 1 wherein a clearance fit is employed between the valve plug (4) and the sleeve (5).
4. A sleeve control valve with the double-freedom-degree control combined valve core assembly according to any one of claims 1 to 3, which is characterized by further comprising a valve body (1), a valve seat (2), a valve cover (6), a valve rod (3), a screw driver (7), an actuating mechanism (8) and an actuating mechanism bracket (9);
a valve cover (6) is arranged at the top of the valve body (1) in a sealing way, and the sleeve (5) is fixed in the valve body (1) through the valve cover (6); a thread driver (7) is detachably arranged on the valve cover (6), and an actuating mechanism (8) is fixed at the top through an actuating mechanism bracket (9); one end of the valve rod (3) is connected with the acting end of the actuating mechanism (8), the valve rod (3) can axially move under the pushing of the actuating mechanism (8), and the other end of the valve rod passes through the threaded driver (7) and is fixedly connected with the valve plug (4); the valve rod (3) is in threaded screwing connection with the threaded driver (7), and the threaded driver (7) is used for converting axial displacement of the actuating mechanism (8) on the valve rod (3) into spiral movement so as to drive the valve plug (4) to rotate circumferentially; the bottom of valve plug (4) and sleeve (5) is equipped with disk seat (2) of fixing on valve body (1), and disk seat (2) are used for carrying out axial spacing to valve plug (4) and sleeve (5), and when valve plug (4) remove to the minimum, and the minimum of first throttle window and second throttle window is located same horizontal plane.
5. Sleeve control valve according to claim 4, characterized in that the valve stem (3) and the valve cap (6) are sealed with an annular sealing packing (10); the bottom of the sealing filler (10) is provided with a filler gasket (11), and a thread driver (7) is arranged above the sealing filler.
6. The sleeve control valve according to claim 4, characterized in that the area of the first and second throttle windows is smaller than the cross-sectional area of the valve body (1) at the fluid inlet.
7. Sleeve control valve according to claim 4, characterized in that a clearance fit is used between the sleeve (5) and the valve seat (2), sleeve (5) and valve cover (6).
8. Sleeve control valve according to claim 4, characterized in that the valve plug (4) and the valve stem (3) are bolted.
9. Sleeve control valve according to claim 4, characterized in that the length of the external thread provided outside the valve stem (3) is greater than the axial travel of the valve plug (4).
10. A method of using the sleeve control valve of any one of claims 4 to 9, comprising the steps of:
according to the actual application scene requirement of the sleeve control valve, firstly installing a screw driver (7), changing axial displacement generated by an actuating mechanism (8) into a rotation angle by using the screw driver (7), and obtaining the actual rotation angle alpha=ωt of the valve rod (3) by measuring the running time t of the actuating mechanism (8), wherein ω is the angle of the valve rod (3) rotated in unit time under the action of the actuating mechanism (8) when the screw driver (7) is installed; because the valve rod (3) and the valve plug (4) synchronously rotate, alpha is the rotation angle of the valve plug (4), so that the circumferential superposition area of the first throttling window and the second throttling window is adjusted; when the rotation angle of the valve plug (4) is adjusted to a preset position, the threaded driver (7) is detached, and the actuating mechanism (8) is used for generating axial displacement, so that the valve plug (4) moves to the preset axial position, and the axial superposition area of the first throttling window and the second throttling window is adjusted;
when fluid enters from the inlet of the valve body (1), the fluid flows out from the outlet of the valve body (1) through the valve seat (2) from the bottom of the valve plug (4) after passing through the superposition part of the first throttling window and the second throttling window; in the process, the axial position and the rotation angle of the valve plug (4) are adjusted through the actuating mechanism (8) so as to realize the adjustment of the opening degree of the valve, thereby realizing the control of the fluid flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311590510.4A CN117628215A (en) | 2023-11-27 | 2023-11-27 | Double-degree-of-freedom control combined valve core, sleeve control valve and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311590510.4A CN117628215A (en) | 2023-11-27 | 2023-11-27 | Double-degree-of-freedom control combined valve core, sleeve control valve and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117628215A true CN117628215A (en) | 2024-03-01 |
Family
ID=90028069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311590510.4A Pending CN117628215A (en) | 2023-11-27 | 2023-11-27 | Double-degree-of-freedom control combined valve core, sleeve control valve and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117628215A (en) |
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2023
- 2023-11-27 CN CN202311590510.4A patent/CN117628215A/en active Pending
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