根据等焓过程建立了可调节流阀动态模型。
Based on isenthalpic process the dynamic model of adjustable J-T valve was build up.
按功能可分为针形可调节流阀、筒形可调节流阀。
Points function can divide into a needle shape can transfer throttle, Tube of shape can transfer throttle.
筒形可调节流阀主要用于节流压井管汇，控制井内流体套压用。
Tube of shape Can transfer throttle chief be used for Choke and Kill Maniflod , Control oil gas wellhead In fluid pressure use.
包括调节阀、节流阀、减压阀等。
节流阀的用途是对冷凝器输出的高压液态制冷剂进行节流降压和调节流量。
Throttle valve role is the export of high-pressure liquid coolant condensers to reduce and regulate the flow of relief.
过去多是采用调节档板或节流阀的方法控制流量，这种方法虽然简单，但损失了大量的电能。
In the past time, the method of adjusting gate plate or throttle was usually used to control flow quantity. The method is simple but causes much loss of power.
介绍了应用数控车床加工调节阀多级节流阀杆时程序的计算及编程中应注意的问题。
The paper analyses and introduces the calculation of programmers and its problems in the machining of control valve spindle with multiple throttling using numerically controlled lathe.
电动节流阀用于常压燃烧系统的火焰控制，应用于燃气和空气阀门同步电动调节或固定空气控制场合。
Motorized Throttling valves are used to control flames in atmospheric burner systems, in applications where both air and gas valves are motorized or in applications working 'air constant'.
单向节流阀是一种广泛用于调节气缸运行速度的阀，它是单向阀和节流阀并联而成的组合式控制阀。
One way flow controll valve is widely used for adjusting cylinder speed. It is an integual control valve formed up by a one way vale and a controll valve.
一种具有变温调节特性的二氧化碳制冷系统节流阀，属于制冷技术领域。
A throttle valve of a carbon dioxide refrigeration system which is characterized by variable temperature regulation belongs to the refrigeration technology field.
但井下情况复杂多变，尤其是压力传递需要时间，给调节节流阀控制立压带来不便。
Due to the complication and variety in the hole especially the time that is needed to transmit pressure it is very inconvenient to use choke valve to control standpipe pressure.
STUF型单节流阀允许对流量 进行单方向的调节，而在相反 方向上油液可自由通过阀体。
STUF ow control valves allow ow adjustment in one direction and free passage in the opposite one.
STUF型单节流阀允许对流量 进行单方向的调节，而在相反 方向上油液可自由通过阀体。
STUF ow control valves allow ow adjustment in one direction and free passage in the opposite one.
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