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PPH儲(chǔ)罐在有很多方面性能優(yōu)于在同等應(yīng)用條件下用其他材質(zhì)制做的儲(chǔ)罐，在自然條件下的使用壽命更長(zhǎng)。有很多優(yōu)點(diǎn)，在應(yīng)用之前，請(qǐng)仔細(xì)檢查PPH儲(chǔ)罐。
第一，PPH儲(chǔ)罐在應(yīng)用前要做好外觀檢查，其表面應(yīng)無(wú)裂紋、縮孔、夾渣、折疊、重皮等缺陷。腐蝕深度和凹陷機(jī)械損傷深度不得超過(guò)相應(yīng)產(chǎn)品標(biāo)準(zhǔn)允許的負(fù)壁厚偏差。
第二，PPH罐閥的殼體試驗(yàn)壓力必須在公稱壓力的1.5倍以下，試驗(yàn)時(shí)間必須在5min以下，以沒(méi)有殼體填充劑泄漏為合格，密封試驗(yàn)以公稱壓力進(jìn)行，閥密封面沒(méi)有泄漏為合格。
第三，機(jī)械設(shè)備運(yùn)輸有毒液體、有害液體、易燃液體管道閘閥，分別設(shè)計(jì)方法論工作壓力太大于1MPa，設(shè)計(jì)方法論溫度小于-29C或大于186C不易燃液體，進(jìn)行了有毒液體管道閘閥殼體工作壓試驗(yàn)和密封試驗(yàn)。
第四，請(qǐng)通過(guò)觀察pph儲(chǔ)存罐外螺紋突面，再加精度和表面粗糙度應(yīng)合乎設(shè)計(jì)構(gòu)思規(guī)定或規(guī)范，并應(yīng)有商品分辨。
The service life of PPH storage tank is longer than that of other storage tanks under the same natural conditions. There are many advantages. Please carefully check the PPH tank before application.
First, the appearance of PPH storage tank shall be inspected before application, and its surface shall be free of cracks, shrinkage cavities, slag inclusion, folding, double skin and other defects. The corrosion depth and mechanical damage depth of depression shall not exceed the negative wall thickness deviation allowed by the corresponding product standards.
Second, the shell test pressure of PPH tank valve must be less than 1.5 times of the nominal pressure, and the test time must be less than 5min. It is qualified if there is no leakage of shell filler. The sealing test is conducted at the nominal pressure and there is no leakage on the valve sealing surface.
Third, for the mechanical equipment transporting toxic liquid, harmful liquid and flammable liquid pipeline gate valve, the working pressure of the design methodology is too greater than 1MPa, and the temperature of the design methodology is less than - 29c or greater than 186c. The working pressure test and sealing test of the shell of the toxic liquid pipeline gate valve are carried out.
Fourth, please observe the protruding surface of the external thread of the PPH storage tank. In addition, the accuracy and surface roughness should meet the design concept or specifications, and there should be commodity discrimination.
