CN203189408U - Rotating type differential action proportion pressure regulating mechanism - Google Patents
Rotating type differential action proportion pressure regulating mechanism Download PDFInfo
- Publication number
- CN203189408U CN203189408U CN 201320117188 CN201320117188U CN203189408U CN 203189408 U CN203189408 U CN 203189408U CN 201320117188 CN201320117188 CN 201320117188 CN 201320117188 U CN201320117188 U CN 201320117188U CN 203189408 U CN203189408 U CN 203189408U
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- China
- Prior art keywords
- pressure
- oil outlet
- spool
- pressure point
- filler opening
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- 230000001105 regulatory effect Effects 0.000 title abstract 6
- 230000009699 differential effect Effects 0.000 title abstract 3
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 239000000945 filler Substances 0.000 claims description 28
- DCSRPHQBFSYJNN-UHFFFAOYSA-L disodium 4-[(2-arsonophenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonate Chemical compound [Na+].[Na+].Oc1c(N=Nc2ccccc2[As](O)(O)=O)c2ccc(cc2cc1S([O-])(=O)=O)S([O-])(=O)=O DCSRPHQBFSYJNN-UHFFFAOYSA-L 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
A rotating type differential action proportion pressure regulating mechanism comprises a fluid layer flow achieving mechanism, a first pressure measuring point, a second pressure measuring point and a pressure measuring point position regulating mechanism. The fluid layer flow achieving mechanism comprises a valve core and a valve sleeve. A gap between the valve core and the valve sleeve is communicated with an oil inlet and an oil outlet. Fluid flows in the gap in a layer flow state. The pressure between the oil inlet and the oil outlet is distributed in a stable linear mode. The first pressure measuring point and the second pressure measuring point are both pressure measuring holes which penetrate through the valve sleeve. The pressure measuring holes are communicated with the gap. The first pressure measuring point and the second pressure measuring point are arranged on a pressure regulating layer flow layer outside the oil inlet and the oil outlet. The pressure measuring point position regulating mechanism comprises the valve core and a pushing part which pushes the valve core to rotate in the valve sleeve. The rotating type differential action proportion pressure regulating mechanism has the advantages that a fluid layer flow channel is arranged in a ring shape, control sensitivity is high, pressure is stable, and proportion control is easy to achieve.
Description
Technical field
The utility model relates to a kind of rotary differential ratio pressure-regulating device, is applied to hydrodynamic pressure control field.
Background technique
Proportional pressure control valve often is used as pilot valve to form two-stage or three step valves.Be exactly to be formed by electromagnetic force motor, proportional pressure-reducing valve and hydraulicchange-over valve as electro-hydraulic proportion reversing valve, proportional pressure-reducing valve is here as pilot stage, balance each other with the outlet pressure of its control and the spring force of commutation main valve one end, thus the displacement opening amount of control commutation main valve.Need control commutation main valve two cavity pressures for two-way electro-hydraulic proportion reversing valve.And existing proportional pressure control valve control sensitivity is not high, pressure control difficulty is big, the problem of pressure instability.
Summary of the invention
Problems such as existing pressure-regulating device control sensitivity is not high, pressure control difficulty is big in order to overcome, pressure instability, the utility model provide a kind of rotary differential ratio pressure-regulating device of controlling highly sensitive, pressure stability and being easy to realize proportional control.
The laminar flow that the rotary differential ratio pressure-regulating device that the utility model proposes adopts fluid to flow is controlled pressure along stroke pressure loss principle, adopts to rotate and realizes differential proportional control.Be example with fluid the mobile of laminar flow in pipe, as length and the diameter ratio l/d of pipe〉4 the time, be called elongated hole, flowing of the elongated hole of flowing through generally presents Laminar Flow, according to fluid laminar flow flow formula in ducted stressed and pipe is:
Wherein, Q is the flow by aperture; D is the pipe diameter; μ is the oil viscosity coefficient; P
sPressure for filler opening; P
oPressure for oil outlet; L is pipe length.
Rotary differential ratio pressure-regulating device described in the utility model is characterized in that: comprise fluid laminar flow realization mechanism, first pressure point, second pressure point and pressure point position adjusting mechanism;
The fluid laminar flow realizes that mechanism comprises spool and valve pocket, and the gap of described spool and valve pocket is communicated with filler opening and oil outlet, and fluid flows and presents laminar flow state in described gap, and the pressure distribution between filler opening and oil outlet presents stable linear distribution; Arrange on each end face of described spool on the sidewall of an end face perforate, described spool two side-wall holes are set, and end face perforate correspondingly is communicated with a side-wall hole, forms two separate passages; Described filler opening, described oil outlet and described side-wall hole all are positioned on the same circular section with the valve pocket axis normal;
The first pressure point and the second pressure point all are the pressure-taking holes that run through valve pocket, described pressure-taking hole is communicated with described gap, the described first pressure point and described second pressure point are arranged on the pressure regulation laminar flow layer outside described filler opening and the oil outlet, and the pressure at the first pressure point and second pressure point place satisfies following formula:
Wherein, P
aPressure for pressure point place; P
bBe the pressure at second pressure point place; P
sPressure for filler opening; P
oPressure for oil outlet; L
1Be first pressure point with the corresponding spool of angle between the oil outlet on arc length; L
2Be second pressure point with the corresponding spool of angle between the oil outlet on arc length; L be filler opening with the corresponding spool of angle between the oil outlet on arc length; And L
1And L
2Span be 0～L; P
aSpan be P
o～P
s
Pressure point position adjusting mechanism comprises described spool and promotes the push mechanism that spool rotates that in described valve pocket the rotation of spool makes L
1And L
2Between 0-L, change.
Described gap can be slit or elongated hole and make the mobile any runner that is rendered as laminar flow state of fluid.
Described spool rotates in valve pocket, and described gap is annular direction and distributes, and described filler opening and oil outlet are arranged within the two ends of described spool; The described first pressure point and described second pressure point are arranged on outside the two ends of described spool.
Angle between described filler opening and the described oil outlet is 180 degree.
Working principle of the present utility model is: when the axis of spool along valve pocket turns in the oil outlet process, the gap length that spool and valve pocket form is constant, but the arc length between first pressure point and the oil outlet reduces, arc length between second pressure point and the oil outlet increases simultaneously, the pressure at the pressure point place that wins is increased, simultaneously the pressure at second pressure point place reduces, and according to the calculation of pressure formula at the first pressure point and second pressure point place as can be known: the pressure at first pressure point place is followed pressure point and L
1Pressure linear, second pressure point place is followed pressure point and L
2Linear; Otherwise, when the axis of spool along valve pocket turns in the filler opening process, the gap length that spool and valve pocket form is constant, but the arc length between first pressure point and the oil outlet reduces, the arc length between second pressure point and the oil outlet increases, the pressure at the pressure point place that wins is reduced, the pressure at second pressure point place increases, thereby realize the steady voltage regulation function of rotary differential ratio pressure-regulating device.
The beneficial effects of the utility model are: the laminar flow runner of fluid is highly sensitive for being circular layout, controlling, pressure stability and be easy to realize proportional control.
Description of drawings
Fig. 1 is that (wherein, P is the pressure at pressure tappings place to fluid layer flowing pressure distribution schematic diagram; l
0Be the distance between pressure tappings and the oil outlet).
Fig. 2 is sectional view of the present utility model.
Fig. 3 is cross-sectional figure of the present utility model.
Fig. 4 is the partial enlarged drawing (arrow represents the flow direction of fluid) of Fig. 3.
Fig. 5 is longitudinal section of the present utility model (filler opening and side-wall hole be coincidence status not).
Fig. 6 is motion state diagram of the present utility model.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing
With reference to accompanying drawing:
Embodiment's 1 rotary differential ratio pressure-regulating device described in the utility model comprises fluid laminar flow realization mechanism 1, the first pressure point 2, the second pressure point 3 and pressure point position adjusting mechanism 4;
The fluid laminar flow realizes that mechanism 1 comprises spool 11 and valve pocket 12, the gap 13 of described spool 11 and valve pocket 12 is communicated with filler opening 121 and oil outlet 122, fluid flows and presents laminar flow state in described gap 13, and the pressure distribution that filler opening 121 and oil outlet are 122 presents stable linear distribution; Arrange on each end face of described spool 11 on the sidewall of an end face perforate 111, described spool 11 two side-wall holes 112 are set, and end face perforate 111 correspondingly is communicated with a side-wall hole 112, forms two separate passages; Described filler opening 121, described oil outlet 122 and described side-wall hole 112 all are positioned on the same circular section with valve pocket 12 axis normal;
The first pressure point 2 and the second pressure point 3 all are the pressure-taking holes that run through valve pocket, described pressure-taking hole is communicated with described gap, on the described first pressure point 2 and 3 pressure regulation laminar flow layers that are arranged on outside described filler opening 121 and the oil outlet 122 of described second pressure, the pressure that 3 places are put in the first pressure point 2 and second pressure satisfies following formula:
Wherein, P
aPressure for pressure point place; P
bBe the pressure at second pressure point place; P
sPressure for filler opening; P
oPressure for oil outlet; L
1Be first pressure point with the corresponding spool of angle between the oil outlet on arc length; L
2Be second pressure point with the corresponding spool of angle between the oil outlet on arc length; L be filler opening with the corresponding spool of angle between the oil outlet on arc length; And L
1And L
2Span be 0～L; P
aSpan be P
o～P
s
Pressure point position adjusting mechanism 4 comprises described spool 11 and promotes the push mechanism that spool 11 rotates that in described valve pocket 12 rotation of spool 11 makes L
1And L
2Between 0-L, change.
Described gap 13 can be slit or elongated hole and make the mobile any runner that is rendered as laminar flow state of fluid.
Described spool 11 rotates in valve pocket 12, and described gap 13 is annular direction and distributes, and described filler opening 121 and oil outlet 122 are arranged within the two ends of described spool 11; The described first pressure point 2 and the described second pressure point 3 are arranged on outside the two ends of described spool 11.
Angle between described filler opening 121 and the described oil outlet 122 is 180 degree.
Working principle of the present utility model is: when the axis of spool 11 along valve pocket 12 turns in oil outlet 122 processes, spool 11 is constant with the gap length that valve pocket 12 forms, but the arc length between the first pressure point 2 and the oil outlet 122 reduces, arc length between the second pressure point 3 and the oil outlet 122 increases simultaneously, the pressure that makes the pressure of winning put 2 places increases, the pressure that 3 places are put in second pressure simultaneously reduces, the calculation of pressure formula of putting 3 places according to the first pressure point 2 and second pressure as can be known: first pressure is put the pressure at 2 places and is followed pressure point and L
1Linear, second pressure is put the pressure at 3 places with pressure point and L
2Linear; Otherwise, when the axis of spool 11 along valve pocket 12 turns in filler opening 121 processes, spool 11 is constant with the gap length that valve pocket 12 forms, but the arc length between the first pressure point 2 and the oil outlet 122 reduces, the arc length between the second pressure point 3 and the oil outlet 122 increases, the pressure that the pressure that makes the pressure of winning put 2 places reduces, 3 places are put in second pressure increases, thereby realizes the steady voltage regulation function of rotary differential ratio pressure-regulating device.
The described content of this specification embodiment only is enumerating the way of realization of model utility design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (4)
1. rotary differential ratio pressure-regulating device is characterized in that: comprise fluid laminar flow realization mechanism, first pressure point, second pressure point and pressure point position adjusting mechanism;
The fluid laminar flow realizes that mechanism comprises spool and valve pocket, and the gap of described spool and valve pocket is communicated with filler opening and oil outlet, and fluid flows and presents laminar flow state in described gap, and the pressure distribution between filler opening and oil outlet presents stable linear distribution; Arrange on each end face of described spool on the sidewall of an end face perforate, described spool two side-wall holes are set, and end face perforate correspondingly is communicated with a side-wall hole, forms two separate passages; Described filler opening, described oil outlet and described side-wall hole all are positioned on the same circular section with the valve pocket axis normal;
The first pressure point and the second pressure point all are the pressure-taking holes that run through valve pocket, described pressure-taking hole is communicated with described gap, the described first pressure point and described second pressure point are arranged on the pressure regulation laminar flow layer outside described filler opening and the oil outlet, and the pressure at the first pressure point and second pressure point place satisfies following formula:
Wherein, P
aPressure for pressure point place; P
bBe the pressure at second pressure point place; P
sPressure for filler opening; P
oPressure for oil outlet; L
1Be first pressure point with the corresponding spool of angle between the oil outlet on arc length; L
2Be second pressure point with the corresponding spool of angle between the oil outlet on arc length; L be filler opening with the corresponding spool of angle between the oil outlet on arc length; And L
1And L
2Span be 0～L; P
aSpan be P
o～P
s
Pressure point position adjusting mechanism comprises described spool and promotes the push mechanism that spool rotates that in described valve pocket the rotation of spool makes L
1And L
2Between 0-L, change.
2. rotary differential ratio pressure-regulating device as claimed in claim 1 is characterized in that: described gap can be slit or elongated hole and fluid be flowed be rendered as any runner of laminar flow state.
3. rotary differential ratio pressure-regulating device as claimed in claim 2, it is characterized in that: described spool rotates in valve pocket, and described gap is annular direction and distributes, and described filler opening and oil outlet are arranged within the two ends of described spool; The described first pressure point and described second pressure point are arranged on outside the two ends of described spool.
4. rotary differential ratio pressure-regulating device as claimed in claim 3 is characterized in that: the angle between described filler opening and the described oil outlet is 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320117188 CN203189408U (en) | 2013-03-14 | 2013-03-14 | Rotating type differential action proportion pressure regulating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320117188 CN203189408U (en) | 2013-03-14 | 2013-03-14 | Rotating type differential action proportion pressure regulating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189408U true CN203189408U (en) | 2013-09-11 |
Family
ID=49106270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320117188 Expired - Fee Related CN203189408U (en) | 2013-03-14 | 2013-03-14 | Rotating type differential action proportion pressure regulating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161786A (en) * | 2013-03-14 | 2013-06-19 | 浙江工业大学 | Rotary type differential motion proportional pressure regulating mechanism |
| CN109099153A (en) * | 2018-08-27 | 2018-12-28 | 湘潭大学 | A kind of adjustable automatic speed transmission electrohydraulic module control device in gap and control method |
-
2013
- 2013-03-14 CN CN 201320117188 patent/CN203189408U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161786A (en) * | 2013-03-14 | 2013-06-19 | 浙江工业大学 | Rotary type differential motion proportional pressure regulating mechanism |
| CN109099153A (en) * | 2018-08-27 | 2018-12-28 | 湘潭大学 | A kind of adjustable automatic speed transmission electrohydraulic module control device in gap and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20170314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |