闸阀

According to the structural feature of parallel single disk gate valve,the strength and rigidity of body will be calculated with finite element method,and with cylindroid shell theory .

根据主闸阀结构特点，分别用有限元法和椭圆柱板壳理论公式计算了阀体的强度与刚度，并进行了分析对比，同时对闸板的刚度进行了校核。

It may be loosely thought of as the sliding gate on a gate valve.

因此也可以粗略地认为全封闭防喷器闸板是闸阀上的一个闸门。

Thus, self-sealing valve fully closed position is based on the location of gate to determined.

由此可见，自动密封的闸阀全关位置是按闸板的位置来确定的。

Valve closed, the sealing surface can only rely on media pressure to seal, that is, to rely on media pressure to ram pressure to the other side of the sealing surface of the seat to ensure the sealing surface of the seal, which is self-sealing.

闸阀关闭时，密封面可以只依靠介质压力来密封，即依靠介质压力将闸板的密封面压向另一侧的阀座来保证密封面的密封，这就是自密封。

Valve closed, sealing surface can only rely on Rising Stem Resilient Seated Gate Valve media pressure to seal, in which the medium pressure to ram pressure to the other side of the sealing surface of the valve seat to ensure the sealing surface of the seal, which is a self-sealing.

闸阀关闭时，密封面可以只依靠介质压力来密封，即依靠介质压力将闸板的密封面压向另一侧的阀座来保证密封面的密封，这就是自密封。

Gate of shortcomings:(1) easy to damage the sealing when the damper open and close the valve seat in contact with the two relative friction between the seal and easy to damage, which affects seals with the life and maintenance more difficult.

闸阀的缺点：(1)密封面易损伤启闭时闸板与阀座相接触的两密封而之间有相对摩擦，易损伤，影响密封件能与使用寿命，维修比较困难。

Gate of shortcomings:(1) easy to damage the sealing surface when the damper open and close the valve seat in contact with the two relative friction between the seal and easy to damage, which affects seals with the life and maintenance more difficult.

闸阀的缺点：(1)密封面易损伤启闭时闸板与阀座相接触的两密封而之间有相对摩擦，易损伤，影响密封件能与使用寿命，维修比较困难。

Open and close a long time and a high degree of large gate valves open and close as to be fully on or off, Cast Steel Gate Valve Series damper large, open space use to a certain, high dimensions, large space required for installation.

启闭时间长，高度大由于闸阀启闭时须全开或全关，闸板行程大，开启用要一定的空间，外形尺寸高，安装所需空间较大。

When the cold weather, long-closed In-line pumps stop valve, the valve should rule out stagnant water.

天气寒冷时，闸阀水阀长期闭停，应将阀后积水排除。

Velan is the world's largest manufacturer of steel gate, globe and check valves.

Velan是世界上最大的钢闸阀，截止阀和止回阀制造商。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。