移動(dòng)式化工氣瓶室的設(shè)計(jì)與建設(shè)技術(shù)要求

　　Design and Construction Technical Requirements for Mobile Chemical Gas Cylinder Room

　　當(dāng)化工需求的氣體種類大于3種，或需儲(chǔ)存3瓶以上的氣體時(shí)，宜設(shè)立氣瓶室，采用集中供氣系統(tǒng)。什么時(shí)候設(shè)立鋼瓶室

　　When there are more than three types of gases required for chemical engineering, or when more than three bottles of gas need to be stored, it is advisable to set up a gas cylinder room and use a centralized gas supply system. When will the steel cylinder room be established

　　集中供氣系統(tǒng)的組成一般包括氣源系統(tǒng)、切換系統(tǒng)、管道系統(tǒng)、調(diào)壓系統(tǒng)、泄漏報(bào)警及緊急切斷系統(tǒng)。

　　The composition of a centralized gas supply system generally includes a gas source system, a switching system, a pipeline system, a pressure regulating system, a leakage alarm and emergency shutdown system.

　　1.氣源系統(tǒng)房屋結(jié)構(gòu)：氣瓶間具備防爆面和泄爆面，且泄爆比例大于22%，氣瓶間不吊頂，內(nèi)部屋頂為平頂；位置：氣瓶間單獨(dú)建設(shè)，遠(yuǎn)離辦公場(chǎng)區(qū)，應(yīng)該在地上一層合理位置，不設(shè)在地下室；形式：氣瓶間泄爆面為空曠無人的場(chǎng)地，或朝天泄爆，氣瓶間不得外小內(nèi)大；種類：易燃?xì)馄颗c助燃?xì)馄糠謩e放置，兩者中間為防爆墻體隔斷，氧化性和腐蝕性氣體不放在一起，毒氣或腐蝕性氣體采用自動(dòng)氣柜；配置：氣瓶間有通風(fēng)、電源插座、照明等電器，且滿足防爆要求。鋼瓶有接地并防滑固定，氣瓶間采用電化學(xué)或紅外式的精密探頭測(cè)試泄漏；空瓶和實(shí)瓶分開儲(chǔ)存，距離不少于2m，且懸掛空瓶/滿瓶標(biāo)識(shí)。

　　1. Structure of the gas source system building: The gas cylinder room has explosion-proof and explosion-proof surfaces, and the explosion-proof ratio is greater than 22%. The gas cylinder room does not have a suspended ceiling, and the internal roof is flat; Location: The gas cylinder room should be built separately, away from the office area, and should be located in a reasonable position on the ground floor, not in the basement; Form: The venting surface between gas cylinders shall be an open and uninhabited area, or vented upwards. The gas cylinder room shall not be small on the outside and large on the inside; Type: Flammable gas cylinders and combustion assisting gas cylinders are placed separately, with explosion-proof walls separating them. Oxidative and corrosive gases are not placed together, while toxic or corrosive gases are stored in automatic gas cabinets; Configuration: The gas cylinder room is equipped with ventilation, power sockets, lighting and other electrical appliances, and meets explosion-proof requirements. The steel cylinder is grounded and non slip fixed, and precise electrochemical or infrared probes are used to test leaks between the cylinders; Empty and full bottles should be stored separately, with a distance of no less than 2 meters, and hung with empty/full bottle labels.

　　2.自動(dòng)切換系統(tǒng)切換系統(tǒng)主要作用是保證后端氣路的持續(xù)氣體供給，當(dāng)在用氣源使用殆盡時(shí)，自動(dòng)切換到備用氣源，真正達(dá)到更換氣體鋼瓶時(shí)不會(huì)影響到后續(xù)的所有分析測(cè)試，同時(shí)保持高純氣體輸送系統(tǒng)內(nèi)的純度，壓力和流量恒定，起到氣體不間斷的作用；

　　2. Automatic switching system The main function of the switching system is to ensure continuous gas supply to the backend gas path. When the in use gas source is exhausted, it automatically switches to the backup gas source, ensuring that replacing the gas cylinder will not affect all subsequent analysis and testing. At the same time, it maintains the purity, pressure, and flow rate of the high-purity gas delivery system, playing a role in uninterrupted gas supply;

　　與報(bào)警系統(tǒng)連接，可以監(jiān)視氣瓶使用狀況，當(dāng)壓力下降到設(shè)定壓力值時(shí)，將發(fā)出報(bào)警信號(hào)，提示工作人員更換氣瓶，從而不耽誤化工的工作進(jìn)度。

　　Connected to the alarm system, it can monitor the usage status of gas cylinders. When the pressure drops to the set pressure value, an alarm signal will be issued to prompt the staff to replace the gas cylinder, so as not to delay the progress of chemical work.

　　3.管道系統(tǒng)主要由不同規(guī)格的304或316不銹鋼材質(zhì)制成的管線和配件組成，根據(jù)輸送的氣體種類和使用要求，再選擇相應(yīng)的材質(zhì)，常見的不銹鋼管根據(jù)表面拋光工藝的不同可分為EP電解拋光不銹鋼管、BA化學(xué)拋光不銹鋼管2種。

　　3. The pipeline system is mainly composed of pipelines and fittings made of 304 or 316 stainless steel materials of different specifications. According to the type of gas being transported and the requirements of use, the corresponding materials are selected. Common stainless steel pipes can be divided into EP electrolytic polished stainless steel pipes and BA chemical polished stainless steel pipes according to different surface polishing processes.

　　4.調(diào)壓系統(tǒng)主要由各種閥門組成，實(shí)現(xiàn)介質(zhì)的開啟關(guān)閉與調(diào)節(jié)作用。根據(jù)化工儀器配置和氣體使用要求，在樓層、房間、實(shí)驗(yàn)臺(tái)、儀器使用終端配置相應(yīng)的氣體減壓閥和截止閥，以滿足各種儀器設(shè)備對(duì)使用氣體的不同需求。常見的閥門有：減壓門、球閥、針閥、單向閥等。

　　4. The pressure regulating system is mainly composed of various valves to achieve the opening, closing, and regulating functions of the medium. According to the configuration of chemical instruments and gas usage requirements, corresponding gas pressure reducing valves and shut-off valves are installed on floors, rooms, experimental benches, and instrument usage terminals to meet the different gas needs of various instruments and equipment. Common valves include pressure reducing valves, ball valves, needle valves, check valves, etc.

　　5.泄漏報(bào)警和緊急切斷系統(tǒng)泄漏報(bào)警：主要是針對(duì)易燃易爆和有毒氣體。當(dāng)危險(xiǎn)氣體發(fā)生泄漏時(shí)，偵測(cè)器會(huì)發(fā)生聲光報(bào)警并且輸出一組開關(guān)量報(bào)警信號(hào)給PLC系統(tǒng)，PLC系統(tǒng)通過處理輸出幾組相對(duì)應(yīng)開關(guān)量報(bào)警信號(hào)，一組預(yù)留可給VAV控制器的風(fēng)機(jī)控制模塊或消防接口等，另外一組給緊急切斷閥切斷泄漏氣體的供氣；

　　5. Leakage alarm and emergency shutdown system leakage alarm: mainly targeting flammable, explosive, and toxic gases. When a dangerous gas leaks, the detector will sound and light an alarm and output a set of switch alarm signals to the PLC system. The PLC system processes and outputs several sets of corresponding switch alarm signals. One set is reserved for the fan control module or fire interface of the VAV controller, and the other set is used to cut off the gas supply of the leaked gas to the emergency cut-off valve;

　　緊急切斷：當(dāng)氣體泄漏時(shí)，偵測(cè)器會(huì)聲光報(bào)警同時(shí)會(huì)輸出一組開關(guān)量的報(bào)警信號(hào)給PLC系統(tǒng)，PLC系統(tǒng)通過處理同時(shí)輸出一組相對(duì)應(yīng)開關(guān)量報(bào)警信號(hào)給電磁閥，使電磁閥斷電從而使氣動(dòng)閥閉合，達(dá)到切斷氣源的目的，以保證供氣的安全。

　　Emergency shutdown: When gas leaks, the detector will sound and light an alarm and output a set of switch alarm signals to the PLC system. The PLC system will process and output a corresponding switch alarm signal to the solenoid valve, causing the solenoid valve to power off and the pneumatic valve to close, achieving the purpose of cutting off the gas source and ensuring the safety of gas supply.

　　氣瓶室其他要求

　　Other requirements for gas cylinder room

　　1、氣瓶室應(yīng)保持陰涼、干燥、嚴(yán)禁明火、遠(yuǎn)離熱源；2、氣瓶室應(yīng)有每小時(shí)不小于3次換氣的通風(fēng)措施；3、氣瓶室宜建在實(shí)驗(yàn)樓旁側(cè)，應(yīng)配備防爆燈、防爆開關(guān)和防氣體滲漏報(bào)警裝置，墻壁需專門設(shè)計(jì)、施工，具有一定防爆級(jí)別；4、對(duì)于一些易燃易爆的氣體，如氫氣、乙炔等，在設(shè)計(jì)之初和施工過程中會(huì)和其他惰性氣體不同，應(yīng)加入氣體回火防止器等安全裝置。

　　1. The gas cylinder room should be kept cool, dry, strictly prohibited from open flames, and away from heat sources; 2. The gas cylinder room should have ventilation measures with no less than 3 air changes per hour; 3. The gas cylinder room should be built next to the laboratory building and equipped with explosion-proof lights, explosion-proof switches, and gas leakage alarm devices. The walls should be specially designed and constructed with a certain explosion-proof level; 4. For some flammable and explosive gases, such as hydrogen, acetylene, etc., they may be different from other inert gases during the design and construction process, and safety devices such as gas flashback arresters should be added.

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