1、 阀门对驱动设备的需求：
1. Valve's demand for driving equipment:
为了使良工阀门和驱动设备和谐作业，形成一个完善的主体，有必要确保驱动设备的技能特性彻底满意阀门操作特性的需求。下面分别从阀门操作特性和运用条件等要素，剖析阀门对驱动设备提出的技能需求。
In order to ensure the harmonious operation of skilled valves and driving equipment, and to form a complete entity, it is necessary to ensure that the technical characteristics of the driving equipment fully meet the requirements of valve operation characteristics. The following analyzes the skill requirements of valves for driving equipment based on factors such as valve operating characteristics and application conditions.
(1) 应具有使阀门牢靠作业的输出转矩或力，驱动设备的输出转矩或力与配用阀门所需的转矩或力相习惯，才干确保阀门牢靠作业。阀门和驱动设备是两个不一样的主体，两者的加工、设备、设备等条件对其操作特性都有很大影响，阀门的作业介质、温度、环境高温多尘、操作时刻距离过长等，都会使阀门的操作转矩发生很大改变。因而，在选用阀门驱动设备时，阀门驱动设备的输出转矩必定要有必定的裕量，而又不能超过阀门零部件的答应强度极限，通常应以阀门实际需要负荷的 1.2~1.5倍为宜。
(1) To ensure the reliable operation of the valve, it is necessary to have an output torque or force that enables the valve to operate reliably, and the maximum output torque or force of the driving equipment should be consistent with the torque or force required for the matched valve. Valves and driving equipment are two different entities, and the processing, equipment, and equipment conditions of both have a significant impact on their operating characteristics. The operating medium, temperature, high temperature and dust in the environment, and long operating distance of the valve can all cause significant changes in the operating torque of the valve. Therefore, when selecting valve driving equipment, there must be a certain margin for the output torque of the valve driving equipment, and it cannot exceed the allowable strength limit of the valve components. It is usually advisable to use 1.2 to 1.5 times the actual maximum load required by the valve.
(2) 应能确保启闭阀门具有不一样的操作转矩，对大多数阀门来说，阀门封闭后再次开启时所需的转矩比封闭阀门时所需的转矩要大得多，这个数据通常是50% ，在某些状况下，这个操作转矩的数值可能会更大。
(2) It should be ensured that the opening and closing valves have different operating torques. For most valves, the torque required when the valve is closed and reopened is much greater than the torque required when the valve is closed. This data is usually 50%, and in some cases, the value of this operating torque may be even greater.
(3) 能供给封闭阀门所需的密封力，强行阀门密封所必需的力，发生必需密封比压是密封的首要条件。各种阀类如何核算下次有时机再谈。
(3) The ability to provide the sealing force required to seal the valve, the force necessary to forcefully seal the valve, and the occurrence of the necessary sealing pressure is the primary condition for sealing. How to calculate various types of valves will be discussed next time when there is a chance.
(4) 证启闭应能保阀门所需求的行程
(4) The opening and closing of the valve should be able to ensure the required stroke of the valve
(5) 证启闭应能保阀门所需求的重复精度
(5) The opening and closing of the valve should be able to ensure the required repetitive accuracy of the valve
(6) 应具有合适的操作速度
(6) Should have appropriate operating speed
(7) 应装备附设组织：手动操作、过载保护、开度指示、信号发送等。
(7) Additional organizations should be equipped: manual operation, overload protection, opening indication, signal transmission, etc.
2、 驱动设备对阀门的需求
2. The demand for valves in driving equipment
(1) 功能优越的阀门应该是体积小、重量轻、功能安稳、作业牢靠、功率高、能耗低。
(1) Valves with superior functions should be small in size, light in weight, stable in function, reliable in operation, high in power, and low in energy consumption.
(2) 阀门构造应习惯驱动设备操作，更典型的问题是热胀大影响，阀门封闭后，介质温度的改变使得阀体、阀杆、阀瓣发生胀大差，因为阀杆和阀杆螺母是自锁的，这个胀大差使得阀杆的轴向推力增大。轴向推力增大使得阀杆和阀杆螺母自锁的更紧，甚于呈现阀瓣咬死的状况。一旦呈现这种状况，驱动设备将无法翻开阀门。所以，阀门的构造必定要防止呈现这种状况。
(2) Valve construction should be accustomed to driving equipment operation, and the most typical problem is the influence of thermal expansion. After the valve is closed, the change in medium temperature causes a difference in expansion of the valve body, valve stem, and valve disc, because the valve stem and valve stem nut are self-locking, this difference in expansion increases the axial thrust of the valve stem. The increase in axial thrust makes the valve stem and valve stem nut self-locking tighter, even presenting a situation of valve disc seizure. Once this situation occurs, the driving device will not be able to open the valve. Therefore, the construction of the valve must prevent this situation from occurring.
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