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 Posted: Sun 23:36, 09 Jan 2011 Post subject: stivali ugg Precise control with load sensing syst |
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Precise control with a speed of load sensing system
Together with the spring force composed of the load pressure. Pump stroke adjustment method of compensation with the pressure pump ... like. Load-sensing control presented here is similar to steady flow. The control spool spring offset to one end of the throttle valve at both ends of the pressure will lead to both ends, as the steady flow valves, pressure drop and spring settings are equal. The main difference is the control of the pump rather than the valve. Spool end of the pipeline pressure drop, including some of the losses, the loss through the valve and the throttle loss. Integrated platform concept. The presentation of the basic control valve and pump control system is the ideal situation of two principles. Pressure signal from the vicinity of the control orifice. There is a small tube in the signal path of the oil discharge outlet. Work, the exhaust port is not closed, the control system has some losses. Control system can choose the higher of the two-way valves control the pump pressure as the pressure signal. In this case, the pump over load pressure 200Psi to work under pressure. When the system does not flow, the pump will 200PSi pressure supply control system. System power losses in excess of actual load, this power loss significantly less than the other two common systems. Steady flow load-sensing pump, and indole can work in the same system, shown in Figure 5,[link widoczny dla zalogowanych], the steady flow valve attached to a dynamic signal. Steady flow characteristics of the valve indicated in Figure 3. Orifice and the pilot safety valve in the valve, the control and drain orifice in a separate component within the body such as steering control. Damping in the slide valve da mouth, instead of the main circuit of the external connector CF. Variable orifice d. And its connecting pipe shown in Figure 5, in the application without considering the loss of control of part of the pipeline. When you need very precise control,[link widoczny dla zalogowanych], or with a spring to set a proper flow in this way. It is called the secondary control system (load sensing control and pressure control). _ From the constant current circuit through the spring chamber Ken and load sensitive signal is called dynamic signal line. CF out of the mouth of the flow is constant, one by one through the orifice d to the spring chamber. Requirements and control of dynamic signal drain valve with an open drain. When the control orifice is closed, is open drain, and when the control orifice is open,[link widoczny dla zalogowanych], drain port is closed. Column in the transition process, there must be some positive amount of cover. Orifice d and d: the role of dynamic signal equivalent to the increase in spring force'm 24 mountains. ≮ h is set too technical Herald Zhang * 1996 * 1 ■ _ also follow precedent 5Lif the potato bin wax) plant insect point of the three friends lose mine r l a hundred Figure 5 with a steady flow of a load-sensitive valve production system, the system is In Figure 3, attached to the principle of a dynamic signal mining. The relationship expressed in the formula △ Pc. Spring constant S of the unit Psi, s multiplied by the ratio of the two orifice diameter of 4 power (or the square of the orifice area ratio). This is a very powerful amplifier and ten, the orifice size must be very precise. The need to provide a variety of set value or higher than the spring force, the dynamic signal is valid. Meanwhile, the dynamic signal Oh decentralization in the hot gas control valve to maintain the temperature, in the not: control the flow of the South just to make steady flow valve spool in a dynamic work in improving the system dynamic signal stability and to improve the sensitivity is ten 1jj side Og Park effective. Transition process in the valve, the control signal circuit may have the reverse flow, that is, reading from the moving core flow at both ends of the spring cavity. If there is no orifice d,, spring cavity will not call it a static information flow ~ a transition process one by one Park Mausoleum, the tear Ke riding in no traffic signal. For thermal discharge port, Chun Ling secretly set to t control. Dynamic signal right foot I Chuan: spring chamber,[link widoczny dla zalogowanych], effectively increasing her control of the spring I d 'shot setting. Side, Kwai similar to the pilot valve, in the spring chamber to open a drain to get the effect of anti-cover. Anquan Run pilot accused of flow pressure limit, the pressure chamber by the flow of decisions out of the spring, out of spring chamber orifice flow faster than d, then ld,[link widoczny dla zalogowanych], allowed to flow from the system shells like cavity flow. Replaced with variable exhaust orifice leading security delete (or in parallel with pilot safety valve) is also variable control can be achieved. The system shown in Figure 5 to apply to any kind of bite on the pump. Indeed Figure 5 shows the load-sensing pump, its main feature is the load-sensitive control of pump control line must be connected. There will be about 200Pi pump operating pressure, while the steady flow adjustment valve set about 5O a 1O0Psi operating pressure. Set the pump pressure must be higher than the valve set pressure, so that control flow systems to achieve profit in the traffic control. Steady flow control valve of the principles can be applied directly to a single pump control system. Steady flow valves that are the basic principles of multi-loop control. Hui Shao this basic principle of load-sensitive, well focuses on the possibility of a variety of conditions and the general method of application and a variety of Kontron. Zhao Yu Chen translated \A ¨, Nuo
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