With the improvement of the living standard of decoration, the hotels where people need to eat can be cheap and have a good environment. If the exhaust pipe of the kitchen is not handled well, it will affect people's dining room. Day by day, people gradually find that the installation of the ventilation pipe some years ago has certain damage, or it doesn't work, and Shandong ventilation cabinet can't smoke out. What should we do to fight for it?

　　(1)設(shè)置在排煙系統(tǒng)排煙口的上方，設(shè)置在有隔墻分隔的機(jī)房?jī)?nèi)，隔墻的耐火極限不得小于2.5h。機(jī)房門(mén)為防火門(mén)，防火極限不小于0.6h。

　　(1) It shall be set above the highest smoke outlet of the smoke exhaust system and in the machine room separated by partition wall, and the fire resistance limit of the partition wall shall not be less than 2.5h. The door of the machine room is fire door, and the fire limit is not less than 0.6h.

　　(2)為方便維護(hù)，風(fēng)機(jī)機(jī)殼與墻壁或設(shè)備的距離不應(yīng)小于60cm。

　　(2) For the convenience of maintenance, the distance between fan shell and wall or equipment shall not be less than 60cm.

　　(3)排風(fēng)扇與排氣管的連接應(yīng)合理。實(shí)踐證明，排氣扇與排氣管道連接不當(dāng)，經(jīng)常導(dǎo)致風(fēng)機(jī)性能顯著下降。

　　(3) The connection between exhaust fan and exhaust pipe shall be reasonable. Practice has proved that the improper connection between exhaust fan and exhaust pipe often leads to a significant decline in fan performance.

　　(4)排氣扇與排氣口之間應(yīng)有聯(lián)動(dòng)裝置。當(dāng)任何一個(gè)排氣口被打開(kāi)時(shí)，排風(fēng)扇可以自動(dòng)啟動(dòng)。一旦報(bào)警,一頭牛火被證實(shí),煙出口應(yīng)打開(kāi)手動(dòng)或由消防控制室遠(yuǎn)程和排煙風(fēng)機(jī)應(yīng)立即投入使用,通風(fēng)和空調(diào)系統(tǒng)在火災(zāi)區(qū)域應(yīng)立即關(guān)閉。

　　(4) There shall be linkage between exhaust fan and exhaust port. When any exhaust port is opened, the exhaust fan can start automatically. Once the alarm is given, a cow fire is confirmed, the smoke outlet shall be opened manually or remotely by the fire control room and the smoke exhaust fan shall be put into use immediately, and the ventilation and air conditioning system shall be closed immediately in the fire area.

　　(5)排風(fēng)扇應(yīng)設(shè)置在混凝土或鋼材基礎(chǔ)上，但不得設(shè)置減振器，風(fēng)扇吸水管上不得設(shè)置調(diào)節(jié)裝置。

　　(5) Exhaust fan shall be set on concrete or steel foundation, but vibration damper shall not be set, and regulating device shall not be set on fan suction pipe.

　　1. 管下料

　　1. pipe blanking

　　(1)嚴(yán)格按照?qǐng)D紙執(zhí)行。切割前應(yīng)仔細(xì)檢查材料的尺寸是否正確。

　　(1) Strictly follow the drawings. Before cutting, carefully check whether the size of the material is correct.

　　(2)切割時(shí)應(yīng)避免材料浪費(fèi)。

　　(2) Material waste shall be avoided during cutting.

　　(3)管材特殊時(shí)，應(yīng)先出料后切料，以控制管材用量。

　　(3) When the pipe is special, the material shall be discharged first and then cut to control the pipe consumption.

　　(4)若采用不銹鋼管，則應(yīng)采用機(jī)械切割或等離子切割，其余可采用火焰切割。

　　(4) If stainless steel pipe is adopted, mechanical cutting or plasma cutting shall be adopted, and flame cutting can be adopted for the rest.

　　(5)切口端面傾斜偏差不超過(guò)2mm。

　　(5) The inclination deviation of the end face of the incision shall not exceed 2mm.

　　2. 坡口制備

　　2. Groove preparation

　　應(yīng)按照規(guī)范要求，連接方式主要是焊接。如果是中低壓管道坡口，則宜采用v型;對(duì)于高壓管道，使用YV槽。坡口加工應(yīng)平整，無(wú)任何缺陷。

　　According to the requirements of the specification, the connection mode is mainly welding. If it is the groove of medium and low pressure pipeline, V type shall be used; for high pressure pipeline, YV groove shall be used. Groove processing shall be flat and free from any defects.

　　3.焊接接頭組對(duì)

　　3. Welding joint assembly

　　這是針對(duì)管道組的，在此之前，我們必須清理管道接口。

　　This is for the pipeline group, before that, we have to clean up the pipeline interface.

　　4. 管道預(yù)制

　　4. Pipeline prefabrication

　　管道預(yù)制應(yīng)嚴(yán)格按照預(yù)制公差進(jìn)行，預(yù)制件應(yīng)按質(zhì)量控制要求編號(hào)。

　　Pipe prefabrication shall be carried out in strict accordance with prefabrication tolerance, and prefabricated parts shall be numbered according to quality control requirements.