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  水利鑄鐵閘門-鑄鐵閘門-水利新聞網(wǎng)在水利工程中,閘門是水工建筑物的重要組成部分之一，它可以根據(jù)需要來封閉建筑物的孔口，也可全部或局部開啟孔口，用于調(diào)節(jié)上下游水位和流量，從而獲得防洪、灌溉、供水、發(fā)電、通航、過木過筏等效益，還可用于排除漂浮物、泥沙、冰塊等，或者為相關(guān)建筑物和設(shè)備的檢修提供了必要件。鑄鐵閘門通常設(shè)置在取水輸水建筑物的進(jìn)、出水口等咽喉要道，通過閘門靈活可靠地啟閉來發(fā)揮它們的功能與效益及維護(hù)建筑物的安全。

閘門隨著孔口尺寸和水頭的增大，其總水壓力也增大，這就需要對它的支承部分的選擇仔細(xì)的考慮，因?yàn)榛瑒又С泻蜐L動支承在水壓力作用下所產(chǎn)生的摩擦阻力差別很大，對啟閉機(jī)的影響也是很大的。平面鑄鐵閘門也常用于深孔工作閘門。只是水力條件對它的影響較大，特別是在需要局部開啟以調(diào)節(jié)流量的情況下。因此，必須在門體的結(jié)構(gòu)、支承、止水以及門槽型式等布置方面予以充分的注意。較小尺寸的平面鑄鐵閘門，多采用螺桿啟閉機(jī)；而較大尺寸的，不需閉門力的平面鑄鐵閘門，則宜采用卷揚(yáng)式啟閉機(jī)。平面鑄鐵閘門的制造、安裝和管理、維護(hù)，一般是比較簡單的。但是，平面鑄鐵閘門的啟閉力，受門重和水頭等因素的影響是較大的。同時，平面鑄鐵閘門也需要較高的啟閉臺和較厚的閘墩等。 閘門 我們都知道閘門的作用就是，是裝于溢流壩、岸邊 溢洪道、 泄水孔、 水工隧洞和 水閘等建筑物的空口上，用以調(diào)節(jié)流量，控制上、下游水位、宣泄洪水、排除泥沙或漂浮物等，是水工建筑物的重要組成部分。在水閘工程中，閘門是主體部分，常占擋水面積的大部。閘門又分為平板閘門和弧形閘門. 那么閘門的日常運(yùn)用與養(yǎng)護(hù)應(yīng)該注意哪些問題呢？下面就以PGZ型鑄鐵閘門為例，為大家介紹一下閘門的日常運(yùn)用與養(yǎng)護(hù)。 1、在啟閉時應(yīng)留意閘板的上、下極限位置，以免損壞閘門或啟閉機(jī)。假如在啟閉機(jī)過程中如有異常狀況應(yīng)立刻中止運(yùn)用并及時檢查處置。

In hydraulic engineering, sluice gate is one of the important components of hydraulic structure. It can close the opening of the building according to the need, or open all or part of the opening to regulate the water level and flow of upstream and downstream, so as to obtain the benefits of flood control, irrigation, water supply, power generation, navigation, raft crossing, etc., and can also be used for exclusion. Floating matter, sediment, ice, etc. or provide necessary parts for the maintenance of relevant buildings and equipment. Cast iron gates are usually located in the main throat of intake and outlet of intake and conveyance structures. They can play their functions and benefits and maintain the safety of buildings by opening and closing the gates flexibly and reliably. With the increase of orifice size and head, the total water pressure of the gate also increases, which requires careful consideration of the selection of its supporting parts, because the friction resistance produced by sliding support and rolling support under the action of water pressure is very different, and the impact on the hoist is also great. Planar cast iron gates are also commonly used for deep-hole working gates. However, hydraulic conditions have a greater impact on it, especially when local opening is needed to regulate the flow. Therefore, full attention must be paid to the layout of the structure, support, water stop and groove type of the door body. The screw hoist is usually used for the smaller plane cast iron gates, while the hoist hoist is suitable for the larger plane cast iron gates which do not require the closing force. The manufacture, installation, management and maintenance of plane cast iron gates are generally relatively simple. However, the opening and closing force of plane cast iron gate is greatly influenced by gate weight and head. At the same time, the planar cast iron gate also needs higher hoisting platform and thicker pier. We all know that the function of gates is to install them on the openings of overflow dams, bank spillways, discharge holes, hydraulic tunnels and sluices to regulate flow, control the water level of upstream and downstream, discharge floods, remove sediment or floating objects, etc. They are important components of hydraulic structures. In sluice engineering, sluice is the main part, often occupying the majority of the water retaining area. The gate is divided into flat gate and arc gate. What problems should we pay attention to in the daily use and maintenance of the gate? Next, take the PGZ cast iron gate as an example, to introduce the daily use and maintenance of the gate. 1. When opening or closing, attention should be paid to the upper and lower limit positions of the gate, so as to avoid damaging the gate or the hoist. If there is any abnormal condition in the process of hoisting or shutting down, it should be stopped immediately and checked and disposed of in time.