板式換熱器液壓試驗(yàn)
板式換熱器換熱功能板片的功能，在水—水換熱、逆流運(yùn)轉(zhuǎn)、熱側(cè)定性溫差為40℃、兩邊流速為0.5m/s條件下的總傳熱系數(shù)，對(duì)水平平直波板片，應(yīng)大于2210W/(m2.K)；關(guān)于人字形波紋板片，應(yīng)大于2908W/(m2.K)。
液壓實(shí)驗(yàn)
以水為實(shí)驗(yàn)液體，兩邊應(yīng)別離進(jìn)行單側(cè)壓力實(shí)驗(yàn)，實(shí)驗(yàn)壓力為1.25倍規(guī)劃壓力。試壓后應(yīng)掃除積水，吹干或曬干，然后再夾緊。
墊片質(zhì)量
a.運(yùn)用溫度和物理功能應(yīng)契合相關(guān)規(guī)定。
b.外表不允許有面積大于3mm2、深度大于1.5mm的氣泡、凹坑及其它影響密封功能的缺點(diǎn)。
Heat transfer functionBoard piece of functionality, in water - water heat exchanger, countercurrent operation, on both sides of the hot side qualitative difference in temperature of 40 ℃, the velocity of 0.5 m/s under the condition of total heat transfer coefficient, the horizontal flat wave plate, should be greater than 2210 w/(m2. K);About herringbone corrugated plate, should be greater than 2908 w/(m2. K).The hydraulic experimentExperimental liquid in water, both sides should be one sided pressure separation experiment, the experimental pressure of 1.25 times planning.After pressure testing should be clear water, dry or dry, then the clamping.The quality of gasketA. use temperature and physical function should agree with related regulations.B. there is no bigger than 3 was appearance, depth is greater than 1.5 mm of bubbles, pits and other faults affect the sealing function.
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