查询词典 flutter valve

Through analysis on principle of safety valve and in combination with the function of safety valve in Hechuan Salt Mine,this paper elaborates the important role that safety valve plays in mining as well as the importance of daily maintenance for safety valve .

通过对安全阀的原理分析，结合合川盐矿安全阀起到的作用，说明了安全阀在矿山开采中的重要作用，并阐述了安全阀失效后的危害及安全阀的日常保养和维修的重要性。

For the self-sealing valve, in the valve closed, the gate of the sealing surface of valve seat sealing surface is just right, that is, the fully open position of valve.

对于自动密封闸阀，在阀关闭时，闸板的密封面恰好对正阀座密封面，即是闸阀的全开位置。

Years came sleeve valve, 70 years large-scale use at home and abroad, and 80 years the introduction of the sleeve valve petrochemical plant accounted for a larger proportion of that time, many people think that the sleeve valve can replace a single, two-seat valve , to become the second-generation product.

60年代问世的套筒阀，70年代在国内外大量使用，80年代引进的石化装置中套筒阀占的比率较大，那时，不少人认为，套筒阀可以取代单、双座阀，成为第二代产品。

The core (2) and a connecting tube (44), in an inner opening (11) of a thin-wall valve sleeve (6), and the valve jacket (5), on the outer periphery of the valve sleeve (6), are connected to the valve sleeve (6) in a fixed manner by pressing in/on.

所述芯(2)与一个连接管(44)通过压入固定地连接在一个薄壁的阀套筒(6)的一个孔(11)中，以及所述阀外壳(5)通过压制固定地连接在该阀套筒(6)的外圆周上。

This is because the sleeve valve is throttling the form of improved stability and maintenance of better than single-seat valve, but it's weight, aiming to halt and leakage targets with single-seat valve in line, how can it replace the single-seat valve it?

这是因为套筒阀只是改进了节流形式、稳定性和维护好于单座阀，但它重量、防堵和泄漏指标上与单、双座阀一致，它怎能取代单、双座阀呢？

Piston-type check valve: valve valve slide along the centerline of the valve body.

活塞式止回阀：阀瓣沿着阀体中心线滑动的阀门。

Pilot-type relief valve as shown in Figure 4-18, mainly from the main valve and pilot valve composed of two parts, the main feature is the use of the main valve, balance piston, the next two cavity fluid pressure difference and the spring force balance.

先导型溢流阀如图4-18所示，主要由主阀和先导阀两部分组成，其主要特点是利用主阀，平衡活塞上、下两腔油液压力差和弹簧力相平衡。

"Kv ·= constant" principle, a sense of freedom laminated springs and valve switching power systems Plug Valves constitute △ P / S =εL S-feeling film work area,ε-spring Hook coefficient, L-valve stroke From this position of valve travel decisions every size of △ P value, if the valve travel position of the Kv and inversely proportional to the G = Kv · a constant value.

"Kv·=常数"原理，自由弹簧和感压膜构成阀门开关动力系统△P/S=εL S—感膜工作面积，ε—弹簧的胡克系数，L—阀行程由此可知阀门的每一个行程位置决定△P值的大小，如果阀行程位的Kv与成反比，则G=Kv·是恒定值。

T present, Gaupu Corporation's main products include: thermostat for central air conditioning, thermostat for heat supply and heating, motorized valve for three-speed switch fan coil, electric control valve, electric butterfly valve, temperature sensor, humidity sensor, differential pressure controller, differential pressure switch, pressure transmitter, water flow switch, antifreezing switch, air valve performer, direct digital controller and integration software etc.

北京高标自控设备有限公司目前公司主要产品有：中央空调温控器、供热采暖温控器、三速开关风机盘管电动阀、电动调节阀、电动蝶阀、温度传感器、湿度传感器、压差控制器、压差开关、压力变送器、水流开关、防冻开关、风阀执行器、DDC直接数字控制器、上位集成软件等。

It is different with the manual exhaust Slurry pumps valve is not required to run the wind man, it must be installed on the location of gas pipeline set point, the so-called water gas gathering point is the top horizontal tube of the highest point, this horizontal pipe 3 ‰ gradient requirements, does not allow for local conditions such as depression and bending, when the air into the valve, the valve automatically opens, the air removed, the water level rose, it will automatically close the valve, hot water can not spill, from a virtually eliminating Manual exhaust is not timely, easy to form a "vapor lock" effect caused by hot water heating effects and huge loss of the state.

它与手动排气闸阀不同点是不需要人为跑风，它安装的位置一定要在管路集气点上，所谓集气点就是顶层供水横管的最高点处，对此横管有3‰倾斜度要求，不允许出现局部凹陷和弯曲等情况，当空气进入阀体后，阀门会自动开启，调节阀空气排除后水位上升，它会自动关阀，热水不能外溢，从根本上消除了手动排气不及时，易形成"气阻"影响供热效果和造成热水大量流失的弊端。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。