CN109026873B - Valve damping ring structure for compensating hydraulic power in closing direction of outflow cartridge valve - Google Patents
Valve damping ring structure for compensating hydraulic power in closing direction of outflow cartridge valve Download PDFInfo
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- CN109026873B CN109026873B CN201810898485.9A CN201810898485A CN109026873B CN 109026873 B CN109026873 B CN 109026873B CN 201810898485 A CN201810898485 A CN 201810898485A CN 109026873 B CN109026873 B CN 109026873B
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- valve
- damping ring
- valve core
- closing direction
- ring
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- 238000013016 damping Methods 0.000 title claims abstract description 63
- 239000003921 oil Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sliding Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a valve damping ring structure for compensating hydraulic power in the closing direction of an outflow cartridge valve. The circumferential surface of the valve sleeve is provided with a through-flow window, and the valve core is inserted into a cylindrical hole in the valve sleeve; the outer circumference of the lower end of the valve core is provided with a damping ring, and the damping ring mainly comprises a damping ring base and an inner chamfer of the damping ring; the damping ring base station is of a flange structure, an annular groove is formed in the lower end step surface of the flange structure, and an inner chamfer of the damping ring is formed on the groove wall of the outer ring of the annular groove, so that the outer ring of the annular groove is transited to the outer edge of the lower end step surface of the flange structure through the inner chamfer of the damping ring; the inner ring of the annular groove extends to the outer circumferential surface of the valve core, so that the groove wall of the inner ring is coincided with the outer circumferential surface of the valve core. The invention can compensate the closing direction hydrodynamic force of the outflow type cone valve and adjust the compensation degree of the closing direction hydrodynamic force borne by the valve core.
Description
Technical Field
The invention relates to a hydraulic power optimization structure of a hydraulic valve, in particular to a valve damping ring structure for compensating hydraulic power in the closing direction of an outflow cartridge valve.
Background
The cartridge valve is widely applied to various hydraulic control systems due to simple structure, large flow capacity and high action speed, and particularly, the application of the cartridge valve is further popularized by combining the prior proportional technology with the cartridge valve, so the cartridge valve has an important position in modern high-pressure large-flow hydraulic systems.
The flat-bottom cone valve not only inherits the good sealing performance and sensitivity of the common full-cone valve, but also has larger through-flow capacity than the traditional full-cone valve, so that the main-stage valve core of the cartridge valve is the multi-purpose flat-bottom cone valve. However, in practical application, the spool of the cone valve is easily interfered by hydrodynamic force during operation, and the cartridge valve is used for high pressure and high flow, so that the interference of hydrodynamic force on the spool is more serious, and the proportional control of the position of the spool is greatly interfered.
Disclosure of Invention
In order to compensate for the hydraulic power of the plug valve core of the outward flow type cartridge valve in the closing direction, the invention provides a valve damping ring structure for compensating the hydraulic power of the outward flow type cartridge valve in the closing direction, which can compensate the hydraulic power of the outward flow type cartridge valve in the closing direction, simplify the control of the plug valve core of the cartridge valve and increase the stability allowance of the plug valve core, and has very important engineering significance for improving the control performance of the plug valve core of the cartridge valve.
The technical scheme adopted by the invention is as follows:
the invention comprises a valve body, a valve sleeve and a valve core, wherein the valve body is provided with an oil inlet and an oil return port, the peripheral surface of the middle part of the valve sleeve is provided with six through-flow windows which are uniformly arranged at intervals along the circumferential direction, and the valve core is inserted in a cylindrical hole in the valve sleeve; the outer circumferential surface of the lower end of the valve core is provided with a damping ring, and the damping ring mainly comprises a damping ring base station and a damping ring inner chamfer arranged on the damping base station; the damping ring base station is of a flange structure, an annular groove is formed in the lower end step surface of the flange structure, and an inner chamfer of the damping ring is formed on the groove wall of the outer ring of the annular groove, so that the outer ring of the annular groove is transited to the outer edge of the lower end step surface of the flange structure through the inner chamfer of the damping ring; the inner ring of the annular groove extends to the outer circumferential surface of the valve core, so that the groove wall of the inner ring is coincided with the outer circumferential surface of the valve core.
The inner end surface of the lower end part of the valve sleeve positioned below the through-flow window extends towards the inner edge to form a step, the edge of the bottom end surface of the valve core is provided with a chamfer, and the step and the chamfer of the bottom end surface of the valve core are matched to form a throttling port area.
The oil inlet set up in valve body bottom center, the oil return opening is seted up in the valve body lateral wall.
The through-flow window is correspondingly communicated with the oil return port.
The damping ring is integrally processed on the valve core.
The outflow cartridge valve is an outflow proportional cartridge valve.
The invention has the beneficial effects that:
the invention can compensate the hydraulic power in the closing direction of the plug-in valve, simplify the valve core control of the plug-in valve, increase the stability allowance of the valve core and adjust the compensation degree of the hydraulic power.
Drawings
Fig. 1 is a structural dimension diagram of an embodiment of the present invention.
FIG. 2 is a schematic diagram of the operation of an original in-flow cartridge valve.
Fig. 3 is a schematic diagram of the operation of an embodiment of the present invention.
FIG. 4 is a graph comparing data obtained by the example of the present invention.
Table 1 is a table comparing the results of examples of the present invention.
In the figure: 1. the valve comprises a valve body, 2, a valve sleeve, 3, a valve core, 4, a damping ring, 5, a through-flow window, 6, a throttling port area, 7, a damping ring base station, 8 and an inner chamfer of the damping ring.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
An original outward flow type cartridge valve is shown in fig. 2, and comprises a valve body 1, a valve sleeve 2 and a valve core 3, wherein the valve core 3 is sleeved in the valve body 1 through the valve sleeve 2, the valve sleeve 2 is installed in the valve body 1 in a cartridge manner, the valve body 1 is provided with an oil inlet P and an oil return port T, the oil inlet P is arranged in the center of the bottom end of the valve body 1, and the oil return port T is arranged on the side wall of the valve body 1.
As shown in fig. 3, the specific implementation of the present invention includes a valve body 1, a valve sleeve 2, a valve core 3, and a damping ring 4, wherein the valve core 3 is sleeved in the valve body 1 through the valve sleeve 2, the valve sleeve 2 is installed in the valve body 1 in an insertion manner, the valve body 1 is provided with an oil inlet P and an oil return port T, the oil inlet P is opened in the center of the bottom end of the valve body 1, and the oil return port T is opened in the side wall of the valve body 1. Six through-flow windows 5 which are uniformly arranged along the circumferential direction at intervals are formed on the circumferential surface of the middle part of the valve sleeve 2, and the through-flow windows 5 are correspondingly communicated with the oil return port T. The valve core 3 is inserted in a cylindrical hole in the valve sleeve 2; the outer circumference of the lower end of the valve core 3 is provided with a damping ring 4.
As shown in fig. 1, the damping ring mainly comprises a damping ring base 7 and a damping ring inner chamfer 8 arranged on the damping base; the damping ring base station 7 is of a flange structure, an annular groove is formed in the lower end step surface of the flange structure, and an inner chamfer 8 of the damping ring is formed on the groove wall of the outer ring of the annular groove, so that the outer ring of the annular groove is transited to the outer edge of the lower end step surface of the flange structure through the inner chamfer 8 of the damping ring; the inner ring of the annular groove extends to the outer circumferential surface of the valve core 3, so that the groove wall of the inner ring is superposed with the outer circumferential surface of the valve core 3.
The inner end surface of the lower end part of the valve sleeve 2 positioned below the through-flow window 5 extends towards the inner edge to form a step, the inner diameter of the step is smaller than the inner diameter of an oil inlet P of the valve body 1, the edge of the bottom end surface of the valve core 3 is provided with a chamfer, and the step and the chamfer of the bottom end surface of the valve core 3 are matched to form a line seal to form a throttling port area 6.
The damping ring 4 is integrally processed on the valve core 3, specifically, the damping ring is directly processed on the circumference of the valve core and is integrated with the valve core.
The working principle of the invention for compensating the hydraulic power of the valve core of the plug-in valve in the closing direction of the outflow type is as follows:
as shown in fig. 2, in the ordinary outward flow type cartridge valve without the damping ring 4, hydraulic oil accelerates at the throttling orifice of the valve core 3, so that high-speed liquid flow generates negative pressure in the throttling orifice area 6, thereby generating hydraulic force F in the closing direction on the valve core 3, increasing the control difficulty of the valve core 3, reducing the stability allowance of the valve core 3, and causing great interference to the working state of the valve core.
The working principle of the damping ring is shown in fig. 3, the damping ring 4 is added on the valve core, so that high-speed liquid flow sprayed out from the throttling port impacts on the damping ring 4, the stress in the opening direction of the valve core is increased, the valve core subjected to the hydrodynamic force F in the closing direction of the valve core is compensated, and the control of the working state of the valve core is facilitated.
The compensation effect of the hydrodynamic force F on the valve element in the closing direction of the valve element can be controlled by adjusting the width W of the damping base, the length L of the damping base, the height H of the damping base, the inner chamfer α and the inner chamfer height L a.
In the present example, simulation analysis was performed, and the outflow cartridge valve of the present example having the damping ring and the outflow cartridge valve having no damping ring were measured at different flow rates Q with the opening x being 3mm, and the results are shown in table 1 and fig. 4, in which the vertical axis in fig. 4 represents the hydrodynamic force F received by the valve element 3, and the horizontal axis represents the flow rate Q passing through the valve.
TABLE 1
As can be seen from the above table 1 and fig. 4, at the same flow rate, the hydrodynamic force F received by the valve core 3 of the outward flow cartridge valve with the damping ring is smaller than the hydrodynamic force F received by the valve core 3 of the outward flow cartridge valve without the damping ring; along with the increase of the flow, the reduction amplitude of the hydrodynamic force F applied to the valve core 3 of the outward flow type cartridge valve with the damping ring is also increased continuously.
The result shows that the valve core of the outward flow type cartridge valve with the damping ring along the closing direction of the valve core is greatly reduced in hydrodynamic force F, the stability of the control of the valve core is improved, and the invention has remarkable technical effect.
Claims (6)
1. The utility model provides a valve damping ring structure for compensating efflux cartridge valve closing direction hydrodynamic force, includes valve body (1), valve barrel (2) and case (3), and valve body (1) is opened there are oil inlet (P) and oil return opening (T), its characterized in that: six through-flow windows (5) which are uniformly arranged along the circumferential direction at intervals are formed in the circumferential surface of the middle part of the valve sleeve (2), and the valve core (3) is inserted into a cylindrical hole in the valve sleeve (2); the outer circumferential surface of the lower end of the valve core (3) is provided with a damping ring (4), and the damping ring consists of a damping ring base (7) and a damping ring inner chamfer (8) arranged on the damping ring base (7); the damping ring base station (7) is of a flange structure, an annular groove is formed in the lower end step surface of the flange structure, and an inner chamfer (8) of the damping ring is formed on the groove wall of the outer ring of the annular groove, so that the outer ring of the annular groove is transited to the outer edge of the lower end step surface of the flange structure through the inner chamfer (8) of the damping ring; the inner ring of the annular groove extends to the outer circumferential surface of the valve core (3), so that the wall of the inner ring groove is superposed with the outer circumferential surface of the valve core (3).
2. The valve damping ring structure for compensating for closing direction hydraulics of an outflow cartridge valve of claim 1, wherein: the inner end surface of the lower end part of the valve sleeve (2) positioned below the through-flow window (5) extends towards the inner edge to form a step, the edge of the bottom end surface of the valve core (3) is provided with a chamfer, and the step and the chamfer of the bottom end surface of the valve core (3) are matched to form a throttling port area (6).
3. The valve damping ring structure for compensating for closing direction hydraulics of an outflow cartridge valve of claim 1, wherein: the oil inlet (P) is arranged at the center of the bottom end of the valve body (1), and the oil return port (T) is arranged on the side wall of the valve body (1).
4. The valve damping ring structure for compensating for closing direction hydraulics of an outflow cartridge valve of claim 1, wherein: the through-flow window (5) is correspondingly communicated with the oil return port (T).
5. The valve damping ring structure for compensating for closing direction hydraulics of an outflow cartridge valve of claim 1, wherein: the damping ring (4) is integrally processed on the valve core (3).
6. The valve damping ring structure for compensating for closing direction hydraulics of an outflow cartridge valve of claim 1, wherein: the outflow cartridge valve is an outflow proportional cartridge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810898485.9A CN109026873B (en) | 2018-08-08 | 2018-08-08 | Valve damping ring structure for compensating hydraulic power in closing direction of outflow cartridge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810898485.9A CN109026873B (en) | 2018-08-08 | 2018-08-08 | Valve damping ring structure for compensating hydraulic power in closing direction of outflow cartridge valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026873A CN109026873A (en) | 2018-12-18 |
| CN109026873B true CN109026873B (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810898485.9A Active CN109026873B (en) | 2018-08-08 | 2018-08-08 | Valve damping ring structure for compensating hydraulic power in closing direction of outflow cartridge valve |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187595A (en) * | 1997-01-09 | 1998-07-15 | 艾姆哈特公司 | Cartridge valve with vacuum breaker |
| CN204922061U (en) * | 2015-09-01 | 2015-12-30 | 浙江大学 | Anti -current body self excitation hydrovalve |
| CN108167459A (en) * | 2017-12-11 | 2018-06-15 | 浙江大学 | A kind of voltage stabilizing pin structure for being used to compensate in-flow inserted valve closing direction hydraulic power |
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- 2018-08-08 CN CN201810898485.9A patent/CN109026873B/en active Active
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| CN109026873A (en) | 2018-12-18 |
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