CN117167502A - Anti-scour wear-resistant valve body cam deflection valve - Google Patents
Anti-scour wear-resistant valve body cam deflection valve Download PDFInfo
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- CN117167502A CN117167502A CN202311228721.3A CN202311228721A CN117167502A CN 117167502 A CN117167502 A CN 117167502A CN 202311228721 A CN202311228721 A CN 202311228721A CN 117167502 A CN117167502 A CN 117167502A
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- wear
- scour
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- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 31
- 238000009991 scouring Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The application provides a cam deflection valve of a scouring-resistant and wear-resistant valve body, which comprises the following components: the valve body is provided with a first cavity which is communicated with the valve body, the first cavity is divided into a spherical section, a first pipe section and a second pipe section which are arranged on two sides of the spherical section, one side of the spherical section is provided with a through hole which is communicated with the first cavity, and the spherical section is internally provided with intermittently distributed bosses; a valve seat having a second cavity therethrough, the valve seat disposed within a first tube segment of the valve body; the pressing ring is arranged at the end part of the first pipe section of the valve body; a valve rod, a first end of which is arranged in the first cavity, and a second end of which is arranged outside the valve body; the valve core is connected with the first end of the valve rod, a butterfly plate is arranged along the axial direction of the valve rod, and the other end of the butterfly plate is connected with a sealing plate; also comprises a filler and a filler gland. The application reduces the scouring and abrasion of the fluid to the valve body and prolongs the service life of the valve body.
Description
Technical Field
The application relates to the technical field of process industrial automation, in particular to a cam deflection valve with a scouring-resistant and wear-resistant valve body.
Background
In the petrochemical and chemical fields, the process device is developing to the directions of large scale, high parameters (large capacity, high pressure and high temperature), high precision, high quality, high benefit and the like, and the process production process has higher requirements on the reliability, quality, cost, safety, environmental protection, service life of the device and the like. Control valves are key devices for fluid control and to meet the higher demands of users, it is necessary to provide control valves of different structural types.
In the working conditions that the fluid medium is multiphase flow (solid-liquid, gas-solid) and high pressure difference, the high-speed fluid containing solid particles passing through the control valve can seriously scour, abrade and other damages to the control valve parts at the throttle orifice, the valve cavity and the like, the service life of the valve element is shortened, even the valve element is invalid, and meanwhile, large noise, vibration, internal leakage, external leakage and the like are generated, so that the reliability, safety and environmental protection of the operation of the device are seriously affected.
The cam deflection valve is a special eccentric structure control valve, and the special eccentric structure design of the cam deflection valve ensures that the cam deflection valve has strong circulation capacity, small flow resistance and good wear resistance, and is particularly suitable for the working conditions. However, due to the eccentric structure of the cam deflection valve, the flow speed and the flow direction of fluid in the valve cavity are extremely unstable, the fluid is split after flowing through the valve core, and enters the valve cavity along two sides of the valve core, part of the fluid directly faces the belly region of the valve body, and the valve core is positioned on one side, so that the flow area of the side is greatly reduced to form a throttling port, the flow speed is greatly improved, and the belly region of the valve body is often flushed and worn until perforated under the action of particulate matters, so that serious leakage is caused, the normal operation of the device is seriously influenced, the problems of safety, environmental protection and the like are caused, and economic loss is also caused to a certain extent.
Therefore, the application provides the cam deflection valve with the anti-scouring and wear-resistant valve body, which adopts the design of a plurality of annular intermittent trapezoidal boss structures, effectively solves the problem that the valve body is eroded, and improves the quality and the reliability of the control valve.
Disclosure of Invention
In view of the shortcomings in the prior art, it is an object of the present application to provide a cam deflection valve that improves the flushing problem of the valve body.
The application provides a cam deflection valve of a scour-resistant and wear-resistant valve body, which comprises the following components:
the valve body is provided with a first cavity which is communicated, the first cavity is divided into a spherical section, a first pipe section and a second pipe section which are arranged on two sides of the spherical section, one side of the spherical section is provided with a through hole which is communicated with the first cavity, an annular bulge is arranged in the first pipe section, which is close to the spherical section, and a plurality of intermittently distributed bosses are arranged in the spherical section;
the valve seat is provided with a second cavity which is communicated, the valve seat is arranged in the first pipe section of the valve body, the circulation direction of the second cavity is consistent with that of the first cavity, and one end of the valve seat is contacted with the bulge;
the pressing ring is arranged at the end part of the first pipe section of the valve body and used for pressing the valve seat;
the valve rod penetrates through the penetrating hole, the first end of the valve rod is arranged in the first cavity, the second end of the valve rod is arranged outside the valve body, the valve rod is not intersected with the flow center of the second cavity, and the valve rod can rotate relative to the valve body;
the valve core is connected with the first end of the valve rod, a butterfly plate is arranged along the axial direction of the valve rod, the other end of the butterfly plate is connected with a sealing plate, and the sealing plate can seal the second cavity;
a packing provided in the through hole and contacting the valve stem and the valve body;
and the packing gland is sleeved on the valve rod and positioned at the outer side of the valve body, and is connected with the valve body.
Preferably, the second end of the valve rod is connected with an actuating mechanism, and the actuating mechanism is one of pneumatic, electric and manual.
Preferably, the valve core is sleeved on the circumference of the valve rod, and the valve core is connected with the valve rod through a flat key.
Preferably, the end of the second cavity of the valve seat, which is close to the protrusion, is a conical surface.
Further, the sealing plate is provided with a spherical crown surface, and the spherical crown surface of the sealing plate is matched with the conical surface of the valve seat.
Preferably, the boss is trapezoidal, and the top surface of the boss is an arc surface concentric with the spherical section of the valve body.
Further, an included angle between the first side surface of the boss facing the circulation direction and the top surface is an obtuse angle.
Preferably, the second side of the boss facing away from the flow direction is perpendicular to the axial direction of the first pipe section of the valve body.
Further, the bosses are annularly distributed on the valve body, the annular surfaces of the bosses are perpendicular to the axial direction of the first pipe section, at least two groups of annularly distributed bosses are arranged, and the bosses on adjacent rings are distributed at intervals.
Further, in the annular direction, the distance between two adjacent bosses is smaller than the width of the first side face of the boss.
Compared with the prior art, the application has the following beneficial effects:
1. according to the anti-scouring wear-resistant valve body cam deflection valve, the intermittent bosses are arranged on the inner spherical surface of the valve body, so that scouring and abrasion of fluid to the valve body are reduced, the service life of the valve body is prolonged, and the maintenance cost of the control valve is reduced.
2. The anti-scouring wear-resistant valve body cam deflection valve provided by the application effectively solves the problem of leakage of the control valve, improves the reliability of the valve, and is beneficial to safety and environmental protection.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic illustration of a structure of a cam deflection valve with a erosion resistant wear valve body in accordance with an embodiment of the present application;
FIG. 2 is a schematic illustration of a closed state of a cam deflection valve of a anti-scour and wear valve body according to an embodiment of the present application;
FIG. 3 is a schematic illustration of an open state of a cam deflection valve with a erosion resistant wear valve body in accordance with an embodiment of the present application;
FIG. 4 is an enlarged partial schematic view of a cam deflection valve with a erosion resistant wear valve body in accordance with an embodiment of the present application;
fig. 5 is a schematic diagram of a valve body of a butterfly force balanced spool cam flex valve in accordance with an embodiment of the application.
In the figure, 1-pressing ring, 2-valve seat, 3-valve body, 31-bulge, 4-valve core, 41-butterfly plate, 42-sealing plate, 5-valve rod, 6-flat key, 7-sealing ring, 8-boss, 9-packing and 10-packing gland.
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
The application provides a cam deflection valve with a scouring-resistant and wear-resistant valve body, wherein a plurality of annular intermittent trapezoidal bosses are arranged in the valve body, so that the problem that the valve body is scoured is effectively solved, and the quality and the reliability of a control valve are improved.
As shown in fig. 1, the anti-scour and wear-resistant valve body cam deflection valve of the present embodiment comprises a valve body 3, a valve seat 2, a pressing ring 1, a valve rod 5 and a valve core 4. The valve body 3 is a pressure-bearing member of the valve and is provided with a first cavity which is communicated, and the first cavity is divided into three sections, namely a spherical section in the middle and a first pipe section and a second pipe section at two sides of the spherical section; a through hole is formed in the side wall of the spherical section, and is communicated with the first cavity and used for installing the valve rod 5; the first pipe section is provided with a circumferential protrusion 31, and the protrusion 31 is close to one side of the spherical section. The valve seat 2 is provided with a second cavity which is communicated, the valve seat 2 is arranged in a first pipe section of the first cavity, and the flow direction of the second cavity is consistent with that of the first cavity; when the valve seat 2 is arranged in the first cavity, one end of the valve seat 2 is abutted against the protrusion 31, the other end of the valve seat 2 is flush with the end part of the first pipe section, and the periphery of the valve seat 2 is contacted with the inner wall of the valve body 3 as much as possible to form sealing fit. The pressing ring 1 is arranged at the end part of the first pipe section, and presses the valve seat 2 into the valve body 3. The valve rod 5 passes through the through hole of the valve body 3, the first end of the valve rod is arranged in the first cavity, and the second end of the valve rod is arranged outside the valve body 3; the second end of the valve rod 5 is used for connecting an actuating mechanism, and the valve rod 5 is driven to rotate through the actuating mechanism. The valve core 4 is arranged in the first cavity of the valve body 3 and is connected with the first end of the valve rod 5; the valve core 4 can seal the second cavity, and the valve core 4 is driven by the valve rod 5 to rotate, so that the circulation state of the valve is controlled; the valve core 4 is of an eccentric structure, namely, the axis of the valve rod 5 and the centers of the flow channels of the valve seat 2 and the valve body 3 have eccentric distances.
In this embodiment, the first and second pipe sections of the first cavity of the valve body 3 are generally straight pipe sections, and the fluid flows into the first pipe section, and the axial direction of the first pipe section to the second pipe section is generally the fluid flowing direction.
As shown in fig. 2 and 3, the inner side of the valve body 3 is provided with intermittently distributed bosses 8, and the bosses 8 are positioned at the spherical section of the valve body 3. The boss 8 protrudes from the inner spherical surface of the valve body 3 by a certain height so that when fluid flows in from the first pipe section, it can impinge on the boss 8, thereby changing the flow state and reducing the flushing of the valve body 3. The intermittent distribution of the bosses 8 can reduce the resistance to fluid flow.
As shown in fig. 4, the boss 8 of the present embodiment is generally trapezoidal in shape, and has a top surface b, a first side surface a, and a second side surface c, in addition to the connection surface with the valve body 3, the top surface b faces the direction of the center of sphere of the spherical segment, the first side surface a faces the direction of fluid flow, and the second side surface c faces away from the direction of fluid flow. The top surface b is an arc surface concentric with the sphere center of the spherical section, namely, the top surface b is always parallel to the circumferential tangential direction of the spherical body at the point, so that fluid passing through the top surface b smoothly passes through the top surface b without blocking. The first side surface a has a certain inclination angle, and the inclination angle is an obtuse angle with the direction of the fluid flowing in, namely an obtuse angle with the top surface b, so that when the first side surface a collides with the fluid, the fluid is reflected to the upper part of the valve cavity while kinetic energy is consumed, the flow speed can be reduced, the rapid outflow of the fluid can be facilitated, and excessive blocking flow is not generated. For the bosses 8 at different positions, the direction of the second side surface c is kept consistent, and the second side surface c is parallel to the center line of the spherical section, namely perpendicular to the axial direction of the first pipe section or the second pipe section, so that the U-shaped groove between the bosses 8 has larger volume, and the flow of fluid and the buffer speed reduction space are facilitated to be increased.
As shown in fig. 2 and 3, the bosses 8 are annularly distributed, and the annular surface is perpendicular to the axial direction of the first pipe section or the second pipe section. At least two groups of bosses 8 are provided, namely at least two rings, in this embodiment three rings, are formed by the bosses 8 on the valve body 3. The bosses 8 on each ring are equally and discontinuously distributed, and the concave surface between the two bosses 8 is the inner spherical surface of the sphere 3. Between two adjacent rings, the bosses 8 are distributed at intervals, namely, in the flowing direction of the fluid, the bosses 8 and the concave surfaces are alternately distributed; the two bosses 8 of the upstream ring and one boss 8 of the downstream ring enclose the aforementioned U-shaped groove. The width of the boss 8 in the circumferential direction, i.e. the width of the first side a in fig. 4, is greater than the width of the concave surface. As shown in fig. 5, by the arrangement, the fluid entering the first U-shaped groove can smoothly flow while the speed is reduced, and the particle impurities in the fluid can smoothly discharge the U-shaped groove without blocking; the width of the bulge 8 is larger than that of the concave surface, so that fluid flowing out of the concave surface can not directly enter the next concave surface, but can impact the next boss 8, thereby changing the flow direction to be divided into a left path and a right path, and the left path and the right path collide with the fluid again, consuming the kinetic energy of the fluid and reducing the flow velocity to the greatest extent.
The trapezoidal projections 8 have, in addition to the top surface b, the first side surface a and the second side surface c, two further flow passage surfaces, which are each parallel to the axial direction of the first pipe section or the second pipe section, and the flow passage surfaces between adjacent projections 8 form flow passages.
As shown in fig. 1, the valve core 4 is sleeved on the valve rod 5, the valve core 4 is matched with the valve rod 5 through the flat key 6, so that the valve core 4 can rotate along with the valve rod 5, and relative rotation between the valve core 4 and the valve rod 5 can not occur. The pressing ring 1 is embedded between the valve body 3 and the valve seat 2, so that the valve seat 2 is in pressing connection with the valve body 3. The actuator to which the valve stem 5 is attached may be a pneumatic, electric or manual actuator. Compared with the intermittently distributed bosses 8, the protrusions 31 are continuous in the circumferential direction.
The valve core 4 is provided with a butterfly plate 41 along the axial direction of the valve rod 5, the other end of the butterfly plate 41 is connected with a sealing plate 42, and the sealing plate 42 is matched with the second cavity to realize the blocking of the second cavity so as to intercept fluid. In this embodiment, the end surface of the valve seat 2 near the protrusion 31 is a conical surface, the sealing plate 42 has a spherical cap surface, and the spherical cap surface and the conical surface cooperate to form a sealing pair, so as to realize sealing. The valve core 4 is of an eccentric structure, so that the spherical crown surface of the valve core 4 is separated from the sealing surface of the valve seat 2 at the opening moment, the abrasion between sealing pairs is reduced, and the service life of the valve is prolonged; simultaneously, when the valve core 4 is closed, the moment can be continuously applied, the sealing specific pressure between the sealing pairs is increased, and the tight closing of the valve is realized.
A packing 9 is provided in the through hole between the valve rod 5 and the valve body 3, and the packing 9 is uniformly filled between the valve rod 5 and the valve body 3. A packing gland 10 is arranged on the outer side of the packing 9, and the packing gland 10 is sleeved on the valve rod 5 and is connected with the valve body 3 through a bolt; the packing gland 10 encapsulates the packing 9 within the valve body 3. A sealing ring 7 is further arranged between the valve rod 5 and the valve body 3, and the sealing ring 7 is close to the first cavity and is in direct contact with a fluid medium; by providing the sealing ring 7, leakage of the valve can be reduced.
As shown in fig. 3, in the open state of the valve, fluid flows through the valve chambers on both sides of the valve spool 4 and directly flushes the boss 8. By adopting the structure, the belly of the valve body 3 can be protected from being eroded and worn by high-speed particulate fluid to a great extent, and the service life of the valve body 3 is effectively prolonged.
The boss 8 of the present application is not limited to a trapezoid, but may be a hexahedron, an octahedron, or the like as long as the diversion of the fluid can be achieved.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. A scour and wear resistant valve body cam deflection valve comprising:
the valve body is provided with a first cavity which is communicated, the first cavity is divided into a spherical section, a first pipe section and a second pipe section which are arranged on two sides of the spherical section, one side of the spherical section is provided with a through hole which is communicated with the first cavity, an annular bulge is arranged in the first pipe section, which is close to the spherical section, and a plurality of intermittently distributed bosses are arranged in the spherical section;
the valve seat is provided with a second cavity which is communicated, the valve seat is arranged in the first pipe section of the valve body, the circulation direction of the second cavity is consistent with that of the first cavity, and one end of the valve seat is contacted with the bulge;
the pressing ring is arranged at the end part of the first pipe section of the valve body and used for pressing the valve seat;
the valve rod penetrates through the penetrating hole, the first end of the valve rod is arranged in the first cavity, the second end of the valve rod is arranged outside the valve body, the valve rod is not intersected with the flow center of the second cavity, and the valve rod can rotate relative to the valve body;
the valve core is connected with the first end of the valve rod, a butterfly plate is arranged along the axial direction of the valve rod, the other end of the butterfly plate is connected with a sealing plate, and the sealing plate can seal the second cavity;
a packing provided in the through hole and contacting the valve stem and the valve body;
and the packing gland is sleeved on the valve rod and positioned at the outer side of the valve body, and is connected with the valve body.
2. The anti-scour and wear-resistant valve body cam deflection valve of claim 1, wherein the second end of the valve stem is coupled to an actuator, the actuator being one of pneumatic, electric, and manual.
3. The anti-scour and wear-resistant valve body cam deflection valve according to claim 1, wherein the valve core is sleeved on the circumference of the valve rod, and the valve core is connected with the valve rod through a flat key.
4. The anti-scour, wear-resistant valve body cam deflection valve of claim 1, wherein the second cavity of the valve seat is tapered near the end of the boss.
5. The anti-scour wear valve body cam deflection valve of claim 4, wherein the seal plate has a spherical cap surface that mates with the conical surface of the valve seat.
6. The anti-scour and wear-resistant valve body cam deflection valve of claim 1 wherein the boss is trapezoidal and the top surface of the boss is a cambered surface concentric with the spherical segment of the valve body.
7. The anti-scour wear valve body cam deflection valve of claim 6, wherein the first side of the boss facing in the flow direction is at an obtuse angle with the top surface.
8. The anti-scour, wear valve body cam deflection valve of claim 7 wherein the second side of the boss facing away from the flow direction is perpendicular to the axial direction of the first tube section of the valve body.
9. The anti-scour and wear-resistant valve body cam deflection valve according to claim 8, wherein the bosses are annularly distributed on the valve body, the annular surfaces of the bosses are perpendicular to the axial direction of the first pipe section, at least two groups of annularly distributed bosses are arranged, and the bosses on adjacent rings are distributed at intervals.
10. The anti-scour wear valve body cam flex valve according to claim 9, characterized in that the spacing between two adjacent bosses in the annular direction is smaller than the width of the first side of said boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311228721.3A CN117167502A (en) | 2023-09-22 | 2023-09-22 | Anti-scour wear-resistant valve body cam deflection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311228721.3A CN117167502A (en) | 2023-09-22 | 2023-09-22 | Anti-scour wear-resistant valve body cam deflection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117167502A true CN117167502A (en) | 2023-12-05 |
Family
ID=88944933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311228721.3A Pending CN117167502A (en) | 2023-09-22 | 2023-09-22 | Anti-scour wear-resistant valve body cam deflection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117167502A (en) |
-
2023
- 2023-09-22 CN CN202311228721.3A patent/CN117167502A/en active Pending
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