CN202194737U - Branch pressure balancing device for small-flow engine - Google Patents
Branch pressure balancing device for small-flow engine Download PDFInfo
- Publication number
- CN202194737U CN202194737U CN2011202613562U CN201120261356U CN202194737U CN 202194737 U CN202194737 U CN 202194737U CN 2011202613562 U CN2011202613562 U CN 2011202613562U CN 201120261356 U CN201120261356 U CN 201120261356U CN 202194737 U CN202194737 U CN 202194737U
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- valve
- current
- branch pressure
- limiting components
- small
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Abstract
The utility model relates to a branch pressure balancing device for a small-flow engine, which comprises a valve front flow limiting member arranged on a valve front guide pipe of an electromagnetic valve, and a valve back flow limiting member arranged between the electromagnetic valve and a thrust chamber. The utility mode provides a simple, effective and low-cost branch pressure balancing device for a small-flow engine, which not only increases the start response characteristic of the engine but also reduces the valve back water impact pressure, and increases the reliability of the valve in work.
Description
Technical field
The utility model relates to a kind of branch pressure equaliser, relates in particular to a kind of small flow motor branch pressure equaliser to the special construction engine control valve that cavity volume is bigger and anti-water attack ability is more weak behind the valve.
Background technique
The technology that current-limiting components is set traditional liquid rail control motor generally all adopts valve when carrying out branch's pressure balance before is regulated this branch flow, and then the regulating valve inlet pressure.But in certain type liquid rail control reseach of engine process, owing to adopt the special construction control valve, the discontented toe mark of engine start response characteristic requirement when causing adopting traditional branch's pressure balance technological is referring to Fig. 1.Through analyzing and verification experimental verification, discovery is that cavity volume causes more greatly behind the valve.When volume is excessive behind valve, receive that the current-limiting components throttling influences before the valve, the loading time significant prolongation, and then influence the starting response characteristic of motor.This influence is more obvious in the small flow system.In addition, this valve very easily breaks down when surge pressure is higher behind valve, causes remarkable action.
The model utility content
In order to solve the above-mentioned technical problem that exists in the background technique; The utility model provides a kind of small flow motor branch pressure equaliser simple, effective and with low cost; Both improve the engine start response characteristic, reduced surge pressure behind the valve simultaneously, improved the valve working reliability.
The technical solution of the utility model is: a kind of small flow motor branch pressure equaliser; Comprise current-limiting components before the valve on the valve dummy pipe that is arranged on solenoid valve, it is characterized in that: also comprise current-limiting components behind the valve that is arranged between solenoid valve and the thrust chamber.
Before the above-mentioned valve hole diameter of current-limiting components greater than valve after the hole diameter of current-limiting components.
The utility model and traditional small flow branch pressure balance compared with techniques have following advantage:
1, the utility model has effectively improved the engine start response characteristic, has reduced surge pressure behind the valve.The utility model is under the prerequisite that keeps the existing project organization of solenoid valve; Utilize behind the valve orifice restriction principle of current-limiting components to carry out branch's pressure balance; And the orifice restriction principle of utilizing current-limiting components before the valve suppresses the valve open filling flow of moment; And then surge pressure behind the reduction valve, make the valve can proper functioning.
2, the utility model has improved the valve working reliability, and is simultaneously with low cost, simple.The utility model is a surge pressure behind the reduction valve, improves the valve working reliability, and a current-limiting components that the aperture is relatively large is set before valve.It does not bear the effect of throttling step-down as far as possible under rated flow, regulate difficulty to reduce system pressure.But in valve open moment, can obviously suppress the filling flow, reduce surge pressure behind the valve, improve the valve working environment, improve the valve working reliability with this.
Description of drawings
Fig. 1 is an existing small flow motor branch pressure equaliser structural representation;
Fig. 2 is the utility model small flow motor branch pressure equaliser structural representation;
Wherein:
1-valve dummy pipe; Current-limiting components before the 2-valve; The 3-solenoid valve; Current-limiting components behind the 4-valve; The 5-thrust chamber.
Embodiment
Referring to Fig. 2; The small flow motor branch pressure equaliser that the utility model provided is big and water attack adaptability is more weak and a kind of small flow engine pressure Equilibrator of design to filling volume behind the valve of solenoid valve 3; Comprise current-limiting components 2 before the valve on the valve dummy pipe 1 that is arranged on solenoid valve 3 and be arranged on solenoid valve 3 and thrust chamber 5 between valve after current-limiting components 4, and before the valve hole diameter of current-limiting components 2 greater than valve after the hole diameter of current-limiting components 4.
The utility model principle: the utility model will be used to regulate flow, after the current-limiting components (in general the aperture is less) of balance branch pressure moves to valve, avoid its orifice restriction to filling valve after the influence of cavity volume, improve the engine response characteristic.For surge pressure behind the reduction valve, improve the valve working reliability simultaneously, a current-limiting components that the aperture is relatively large is set before valve, it does not bear the effect of throttling step-down as far as possible under rated flow, regulates difficulty to reduce system pressure.But in valve open moment, can obviously suppress the filling flow, reduce surge pressure behind the valve, improve the valve working environment, improve the valve working reliability with this.
Claims (2)
1. small flow motor branch pressure equaliser comprises current-limiting components before the valve on the valve dummy pipe that is arranged on solenoid valve, it is characterized in that: also comprise current-limiting components behind the valve that is arranged between solenoid valve and the thrust chamber.
2. small flow motor according to claim 1 branch pressure equaliser is characterized in that: before the said valve hole diameter of current-limiting components greater than valve after the hole diameter of current-limiting components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202613562U CN202194737U (en) | 2011-07-22 | 2011-07-22 | Branch pressure balancing device for small-flow engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202613562U CN202194737U (en) | 2011-07-22 | 2011-07-22 | Branch pressure balancing device for small-flow engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194737U true CN202194737U (en) | 2012-04-18 |
Family
ID=45949653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202613562U Expired - Lifetime CN202194737U (en) | 2011-07-22 | 2011-07-22 | Branch pressure balancing device for small-flow engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225726A (en) * | 2017-12-27 | 2018-06-29 | 西安航天动力研究所 | A kind of liquid fluid system acoustics closed end inlet experiment boundary condition simulation device |
| CN110382794A (en) * | 2018-02-13 | 2019-10-25 | 张惠明 | A kind of failure safe water-saving spray head device and method |
-
2011
- 2011-07-22 CN CN2011202613562U patent/CN202194737U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225726A (en) * | 2017-12-27 | 2018-06-29 | 西安航天动力研究所 | A kind of liquid fluid system acoustics closed end inlet experiment boundary condition simulation device |
| CN110382794A (en) * | 2018-02-13 | 2019-10-25 | 张惠明 | A kind of failure safe water-saving spray head device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
|
| CX01 | Expiry of patent term |