CN215719901U - Flow distribution system resistant to flow saturation - Google Patents
Flow distribution system resistant to flow saturation Download PDFInfo
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- CN215719901U CN215719901U CN202122157541.3U CN202122157541U CN215719901U CN 215719901 U CN215719901 U CN 215719901U CN 202122157541 U CN202122157541 U CN 202122157541U CN 215719901 U CN215719901 U CN 215719901U
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Abstract
The utility model provides a flow distribution system for resisting flow saturation, which comprises a plurality of oil outlet pipelines, wherein the oil outlet pipelines are communicated with an oil outlet, distribution pipelines and an oil inlet pipeline, and meanwhile, the distribution pipelines are converged to control oil which is communicated with a variable pump. The flow distribution system for resisting flow saturation provided by the utility model is provided with the oil outlet pipeline and the distribution pipeline, so that the pressure difference on two sides of the throttling valve is kept stable, the back pressure valve can be still opened when the flow is small, the oil outlet stability of the throttling valve is kept, and the flow is not influenced by the load pressure.
Description
Technical Field
The utility model mainly relates to the technical field of hydraulic pressure, in particular to a flow distribution system for resisting flow saturation.
Background
In hydraulic machinery in various industries such as engineering, metallurgy, mines, water conservancy and the like, a flow saturation phenomenon occurs, most of used distribution systems are shown in fig. 1, and the existing distribution systems are influenced by flow, cannot distribute when the flow is insufficient, and cannot well resist flow saturation.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model provides a flow distribution system for resisting flow saturation, which is used for solving the technical problems that the existing distribution system in the background art is influenced by flow, cannot distribute when the flow is insufficient, and cannot resist the flow saturation well.
2. Technical content
In order to achieve the purpose, the utility model adopts the technical scheme that: a flow distribution system for resisting flow saturation comprises a plurality of oil outlet pipelines, wherein the oil outlet pipelines are communicated with an oil outlet, distribution pipelines and an oil inlet pipeline, meanwhile, the distribution pipelines are converged to control oil, the control oil is communicated with the control oil and communicated with a variable pump, and the variable pump is communicated with an oil inlet.
Furthermore, the oil outlet pipeline comprises a back pressure valve, a throttle valve is arranged at the oil inlet end of the back pressure valve, the oil inlet end of the throttle valve is connected with the oil inlet pipeline, and the oil outlet end of the back pressure valve is communicated with an oil outlet.
Furthermore, the distribution pipeline comprises a one-way valve, the oil inlet end of the one-way valve is communicated with the oil outlet, and the oil outlet end of the one-way valve is communicated with the control oil.
Furthermore, the system also comprises a safety pipeline which comprises a safety valve, and the safety valve is communicated with each distribution pipeline and the discharge port.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
the flow distribution system for resisting flow saturation provided by the utility model is provided with the oil outlet pipeline and the distribution pipeline, so that the pressure difference on two sides of the throttling valve is kept stable, the back pressure valve can still be opened when the flow is small, the pressure difference of the throttling valve is kept stable, and the flow is not influenced by the load pressure.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a schematic diagram of a prior art dispensing system;
fig. 2 is a schematic view of the dispensing system of the present invention.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the utility model, the detailed description should not be construed as limiting the utility model but as a more detailed description of certain aspects, features and embodiments of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
The first embodiment is as follows: referring to fig. 2, a flow distribution system for resisting flow saturation comprises two oil outlet pipelines a, wherein the oil outlet pipelines a are respectively communicated with oil outlets (a1 and a2), a distribution pipeline b and an oil inlet pipeline c, oil outlet ends of the two distribution pipelines b are converged to control oil Ls, the control oil Ls is communicated with a variable pump (not shown in the figure), the variable pump is connected with a compensation valve (not shown in the figure), and the compensation valve controls the output pressure of the variable pump and sends the output pressure to an oil inlet P; the oil outlet pipeline a comprises a back pressure valve 1, a throttle valve 2 is arranged at the oil inlet end of the back pressure valve 1, the oil inlet end of the throttle valve 2 is connected with an oil inlet pipeline c, and the oil outlet end of the back pressure valve 1 is communicated with oil outlets A1 and A2. The distribution pipeline b comprises a one-way valve 3, the oil inlet end of the one-way valve 3 is communicated with the oil outlet, and the oil outlet end of the one-way valve 3 is communicated with the control oil Ls. The system also comprises a safety pipeline d, the safety pipeline d comprises a safety valve 4, and the safety valve 4 is communicated with each distribution pipeline b and the discharge port T.
Specifically, as shown in fig. 2, the pressure high at the two oil outlets a1 and a2 flows out from the check valve 3 to the control oil Ls, and is transmitted to the variable displacement pump;
the formula for the flow is:
wherein Q is the flow required by hydraulic pressure, C is the flow coefficient, A is the opening area of the throttle valve, and delta P is the pressure difference;
specifically, the opening pressure of the back pressure valve 1 in the system is as follows:
P1controlling the flow passage pressure of the oil Ls and the spring pressure of the back pressure valve;
the pressure of the oil inlet P is as follows:
controlling the flow passage pressure of the oil Ls and the compensation pressure of the variable pump;
the pressure difference between the two sides of the throttle valve 2 is as follows:
Δp＝P-P1the compensation pressure of the variable pump-the spring pressure of the back pressure valve;
hydraulic oil enters the valve body from one side of the backpressure valve 1, and the pressure reaches the pressure of a control oil LS flow channel and the pressure formed by a spring, so that the backpressure valve 1 is opened; the control oil Ls is communicated to a compensation valve (not shown in the figure) of the variable displacement pump, the pressure formed by the compensation valve is the compensation pressure, and the output pressure of the variable displacement pump is the sum of the pressure of the control oil Ls and the pressure of the compensation valve (the pressure calculation mode of the oil inlet P given by the above formula).
From the above formula, when the pressure difference is stable, the flow rate required by the oil outlets a1 and a2 is determined according to the opening area of the throttle valve 2, that is, the flow rate is large when the opening of the throttle valve 2 is large; the system can maintain the pressure difference to be stable no matter the flow, thereby realizing the distribution of small flow and the anti-saturation.
Example two: the number of the oil outlet pipelines a and the number of the distribution pipelines b can be three or five, and the like, and the oil outlet pipelines a and the distribution pipelines b are connected in the manner described in the first embodiment, the oil outlet ends of the distribution pipelines b are communicated with the control oil Ls, the oil inlet end of the oil outlet pipeline a is communicated with the oil inlet pipeline, and the oil outlet end of the oil outlet pipeline a is communicated with the oil outlet and the oil inlet end of the one-way valve 3.
In summary, the flow distribution system for resisting flow saturation provided by the utility model is provided with the oil outlet pipeline and the distribution pipeline, so that the pressure difference on two sides of the throttle valve is kept stable, the back pressure valve can still be opened when the flow is small, the oil outlet stability of the throttle valve is kept, and the flow is not influenced by the load pressure.
The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.
Claims (4)
1. A flow distribution system resistant to flow saturation, characterized by: the oil outlet pipeline is communicated with the oil outlet, the distribution pipelines and the oil inlet pipeline, meanwhile, the distribution pipelines converge to control oil, the control oil is communicated with the variable pump, and the variable pump is communicated with the oil inlet.
2. The flow distribution system for resisting flow saturation according to claim 1, wherein the oil outlet pipeline comprises a back pressure valve, an oil inlet end of the back pressure valve is provided with a throttle valve, an oil inlet end of the throttle valve is connected with the oil inlet pipeline, and an oil outlet end of the back pressure valve is communicated with the oil outlet.
3. The flow distribution system resistant to flow saturation according to claim 2, wherein the distribution pipeline comprises a one-way valve, an oil inlet end of the one-way valve is communicated with an oil outlet, and an oil outlet end of the one-way valve is communicated with control oil.
4. The flow distribution system against flow saturation according to claim 1, further comprising a safety line including a safety valve, the safety valve communicating each distribution line and the bleed port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122157541.3U CN215719901U (en) | 2021-09-08 | 2021-09-08 | Flow distribution system resistant to flow saturation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122157541.3U CN215719901U (en) | 2021-09-08 | 2021-09-08 | Flow distribution system resistant to flow saturation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215719901U true CN215719901U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122157541.3U Active CN215719901U (en) | 2021-09-08 | 2021-09-08 | Flow distribution system resistant to flow saturation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215719901U (en) |
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2021
- 2021-09-08 CN CN202122157541.3U patent/CN215719901U/en active Active
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