在噴淋清洗機(jī)的噴淋系統(tǒng)中,水錘效應(yīng)是一種常見的不良現(xiàn)象。當(dāng)管道內(nèi)水流突然改變流速或方向時,液體慣性會引發(fā)壓力急劇波動,形成類似 “錘擊” 的沖擊波。這不僅帶來振動和噪聲,還可能導(dǎo)致管道松動、磨損,甚至損壞水泵、閥門等部件,影響設(shè)備運(yùn)行與壽命。
Water hammer effect is a common adverse phenomenon in the spray system of a spray cleaning machine. When the flow velocity or direction of water in the pipeline suddenly changes, the inertia of the liquid will cause a sharp fluctuation in pressure, forming a shock wave similar to a "hammer strike". This not only brings vibration and noise, but may also cause pipeline loosening, wear, and even damage to components such as water pumps and valves, affecting equipment operation and lifespan.
水錘效應(yīng)的成因主要有三方面。一是閥門快速啟閉,自動化清洗中電磁閥突然動作,會瞬間截斷或釋放水流,在閥門附近形成高壓并轉(zhuǎn)化為壓力波擴(kuò)散。二是水泵啟停不當(dāng),啟動時水流從靜止驟加速,或停機(jī)時突然失力,都會因慣性引發(fā)壓力波動。三是管道設(shè)計問題,長管道延長壓力波傳播路徑,使其能量疊加;過多彎頭、變徑管導(dǎo)致局部紊流,易產(chǎn)生額外壓力峰值;管道材質(zhì)過剛、固定不當(dāng)也會降低緩沖能力。
There are three main causes of water hammer effect. One is the rapid opening and closing of valves. During automated cleaning, if the solenoid valve suddenly acts, it will instantly cut off or release the water flow, forming high pressure near the valve and converting it into pressure waves for diffusion. Secondly, improper start stop of the water pump can cause pressure fluctuations due to inertia, such as sudden acceleration of water flow from rest during start-up or sudden loss of force during shutdown. The third issue is pipeline design, where long pipelines extend the propagation path of pressure waves, causing their energy to accumulate; Excessive bends and variable diameter pipes can cause local turbulence, which can easily generate additional pressure peaks; Excessive rigidity and improper fixation of pipeline materials can also reduce buffering capacity.
抑制水錘效應(yīng)需多管齊下。閥門控制上,用緩閉式閥門替代快開快閉閥門,其通過特殊結(jié)構(gòu)延長啟閉時間,如緩閉式止回閥在水泵停機(jī)時緩慢關(guān)閉,避免壓力驟升;結(jié)合智能控制,依壓力反饋調(diào)節(jié)啟閉速度。
Suppressing the water hammer effect requires a multi pronged approach. In terms of valve control, slow closing valves are used instead of fast opening and closing valves, which extend the opening and closing time through a special structure. For example, slow closing check valves slowly close when the water pump is stopped to avoid sudden pressure increases; Combined with intelligent control, adjust the opening and closing speed based on pressure feedback.
水泵方面,采用軟啟動與軟停止技術(shù),啟動時逐步提升電壓使轉(zhuǎn)速平穩(wěn)增加,停機(jī)時逐步降功率讓水流緩慢減速;在水泵出口裝穩(wěn)壓罐,利用氣囊吸收或釋放能量以穩(wěn)定壓力。
In terms of water pumps, soft start and soft stop technologies are adopted. When starting, the voltage is gradually increased to steadily increase the speed, and when stopping, the power is gradually reduced to slow down the water flow slowly; Install a stabilizing tank at the outlet of the water pump and use airbags to absorb or release energy to stabilize the pressure.
管道設(shè)計上,縮短不必要長度,減少壓力波傳播距離;用大曲率半徑彎頭降低紊流;采用彈性支架或加減震墊吸收振動;在長管道中段、水泵出口等關(guān)鍵處裝水錘消除器,通過活塞或膜片吸納水流以緩沖高壓。
In pipeline design, unnecessary lengths should be shortened to reduce the propagation distance of pressure waves; Reduce turbulence with large curvature radius elbows; Adopting elastic brackets or adding shock-absorbing pads to absorb vibrations; Install water hammer eliminators at key locations such as the middle section of long pipelines and the outlet of water pumps, and absorb water flow through pistons or diaphragms to buffer high pressure.
通過針對性優(yōu)化,可有效抑制水錘效應(yīng),降低設(shè)備損耗,保障噴淋清洗機(jī)穩(wěn)定運(yùn)行,提升清洗效率與安全性。
Through targeted optimization, water hammer effects can be effectively suppressed, equipment losses can be reduced, stable operation of spray cleaning machines can be ensured, and cleaning efficiency and safety can be improved.
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