ABB B3EA HENF315147R1數(shù)字I/O模塊潔凈通風(fēng)系統(tǒng)要達(dá)到潔凈室空氣潔凈度的標(biāo)準(zhǔn)規(guī)范。近期新建的新冠病毒核酸檢測實驗室，對空氣潔凈等級從過往的初效標(biāo)準(zhǔn)，提升到中效過濾標(biāo)準(zhǔn)。
在潔凈通風(fēng)系統(tǒng)中，PLC通過對排風(fēng)機(jī)頻率控制，維持室內(nèi)換氣、空氣稀釋并排除室內(nèi)有害氣體，保證醫(yī)患人員的安全和舒適性。
1.2 負(fù)壓控制與實現(xiàn)
負(fù)壓隔離區(qū)域包括產(chǎn)物分析、擴(kuò)增室、核酸提取、試劑配制、P2實驗室、細(xì)胞培養(yǎng)、P2+實驗室等7個實驗區(qū)域，共15間負(fù)壓隔離房，潔凈有效區(qū)域近400平米。
在負(fù)壓隔離區(qū)，空氣必須保證是單方向流動，讓外界新鮮空氣流向隔離區(qū)。單方向流動將避免給隔離區(qū)空氣造成二次污染，這一切都需要負(fù)壓控制來實現(xiàn)。
分布在各房間的差壓傳感器連接PLC，監(jiān)測每個房間室內(nèi)外壓差值，并與系統(tǒng)設(shè)計值進(jìn)行比較，通過PLC的PID運(yùn)算，調(diào)節(jié)房間排風(fēng)管路上的電動風(fēng)閥執(zhí)行器，保持室內(nèi)負(fù)壓值在要求范圍內(nèi)。
1.3 負(fù)壓梯度設(shè)定與實現(xiàn)
根據(jù)負(fù)壓值控制外界新鮮空氣的流入，負(fù)壓梯度保證空氣從低污染區(qū)向高污染區(qū)流動。7個不同類型的實驗室，受污染的程度不同，負(fù)壓依次設(shè)定為：-30Pa(產(chǎn)物分析)、-20Pa(擴(kuò)增室)、-20Pa(細(xì)胞培養(yǎng))、-20Pa(P2+實驗室)、-10Pa(P2實驗室)、-10Pa(試劑配制)、-10Pa(核酸提取)。負(fù)壓梯度的建立，可以降低空氣污染程度，抑制病毒的傳播，實現(xiàn)環(huán)境安全。
根據(jù)設(shè)定的負(fù)壓目標(biāo)值，通過PID控制，每個房間均可達(dá)到負(fù)壓梯度控制目標(biāo)。
PLC通過控制和運(yùn)算，實現(xiàn)對排風(fēng)機(jī)和送風(fēng)機(jī)的調(diào)控。排風(fēng)機(jī)與空調(diào)機(jī)組送風(fēng)機(jī)連鎖動作，送風(fēng)機(jī)和排風(fēng)機(jī)的啟、停動作同步。排風(fēng)機(jī)根據(jù)設(shè)于總風(fēng)管上的壓差傳感器，根據(jù)設(shè)定值與實測值的比較，通過PID運(yùn)算，控制排風(fēng)機(jī)運(yùn)行頻率。
1.4 監(jiān)測與報警
PLC將各項數(shù)據(jù)上傳到觸摸屏(HMI)，用于顯示負(fù)壓實驗室設(shè)備運(yùn)行狀態(tài)，各個實驗室內(nèi)當(dāng)前負(fù)壓、故障信息、實時曲線、歷史曲線等。對各個房間設(shè)置目標(biāo)負(fù)壓，設(shè)置負(fù)壓上下限報警值，并且將各個房間的情況進(jìn)行展示。The clean ventilation system shall meet the standard specifications for the air cleanliness of the clean room. The recently built COVID-19 nucleic acid testing laboratory has upgraded the air cleanliness level from the previous primary standard to the medium efficiency filtration standard.
In the clean ventilation system, PLC controls the frequency of the exhaust fan to maintain indoor ventilation, air dilution and eliminate indoor harmful gases, so as to ensure the safety and comfort of doctors and patients.
1.2 Negative pressure control and realization
The negative pressure isolation area includes 7 experimental areas, including product analysis, amplification room, nucleic acid extraction, reagent preparation, P2 laboratory, cell culture, P2+laboratory, and a total of 15 negative pressure isolation rooms, with a clean and effective area of nearly 400 square meters.
In the negative pressure isolation area, the air must be guaranteed to flow in one direction to allow the outside fresh air to flow to the isolation area. Unidirectional flow will avoid secondary pollution to the air in the isolation area, which requires negative pressure control.
The differential pressure sensor distributed in each room is connected to PLC to monitor the difference between indoor and outdoor pressure in each room and compare it with the design value of the system. Through the PID calculation of PLC, adjust the electric air valve actuator on the room exhaust pipe to keep the indoor negative pressure within the required range.
1.3 Setting and realization of negative pressure gradient
The inflow of fresh air from the outside is controlled according to the negative pressure value, and the negative pressure gradient ensures that the air flows from the low pollution area to the high pollution area. Seven laboratories of different types are polluted to different degrees. The negative pressure is set as follows: - 30Pa (product analysis), - 20Pa (amplification room), - 20Pa (cell culture), - 20Pa (P2+laboratory), - 10Pa (P2 laboratory), - 10Pa (reagent preparation), and - 10Pa (nucleic acid extraction). The establishment of negative pressure gradient can reduce the degree of air pollution, inhibit the spread of viruses and achieve environmental safety.
According to the set negative pressure target value, each room can achieve the negative pressure gradient control target through PID control.
Through control and calculation, PLC can control the exhaust fan and forced draft fan. The exhaust fan interlocks with the air supply fan of the air conditioning unit, and the start and stop of the air supply fan and the exhaust fan are synchronized. The exhaust fan controls the operating frequency of the exhaust fan through PID calculation according to the differential pressure sensor set on the main air duct and the comparison between the set value and the measured value.
1.4 Monitoring and alarm
PLC uploads various data to the touch screen (HMI), which is used to display the operating status of the negative pressure laboratory equipment, the current negative pressure, fault information, real-time curve, historical curve, etc. in each laboratory. Set the target negative pressure for each room, set the upper and lower limit alarm value of negative pressure, and display the situation of each room.
主營產(chǎn)品簡介
專注于DCS、PLC、機(jī)器人控制系統(tǒng)、大型伺服四大系統(tǒng)領(lǐng)域。

主營產(chǎn)品各種模塊/卡件，控制器，觸摸屏，伺服驅(qū)動器。

優(yōu)勢：供應(yīng)進(jìn)口原裝正品，專業(yè)停產(chǎn)配件，

發(fā)貨快，貨期精準(zhǔn)，

主營品牌包括 ABB貝利、GE/FUANC、FOXBORO、英維思TRICONEX 、本特利BENTLY、A-B羅克韋爾、艾默生EMERSON 、OVATION、MOTOROLA、XYVOM、霍尼韋爾HONEYWELL 、力士樂REXROTH、KUKA、NI、DEIF、橫河、伍德沃德WOODWARD、瑞恩、施耐德SCHNEIDER 、安川、 穆格MOOG、PROSOFT等品牌。

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●使用前:

在操作和維護(hù)，安裝設(shè)備之前，請閱讀并嚴(yán)格遵守安全相關(guān)的信息。

Read and strictly follow safety-related information before operatingmaintainingand installing equipment.

●使用者要求:

必須從事安裝，組裝或維護(hù)設(shè)備等相關(guān)工控電氣機(jī)械以及其他相關(guān)技術(shù)的人員。

Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.應(yīng)用范圍:

應(yīng)用于品牌本系列工業(yè)以及生產(chǎn)生活自動化設(shè)備產(chǎn)品。

Used in the brand of this series of industriaand production automation eauipment products

適用于場景:系統(tǒng)集成，非標(biāo)定制，產(chǎn)線升級改造，原設(shè)備電氣替換等等。

Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.

●操作人員:

應(yīng)該由本品牌專業(yè)培訓(xùn)操作員來安裝、操作和維修設(shè)備。專業(yè)人員具有技術(shù)能力強(qiáng)，熟悉安全信息和安全實施:

熟悉設(shè)備的安裝加工、操作和維護(hù):熟悉處理所有的潛在危險情況。

Equipment should be installed,operated and maintained by trained operators from the brand

●危險情況

警告

.請注意使用人員的人身安全。

●除了產(chǎn)品特性以及功能，還需了解產(chǎn)品的使用壽命環(huán)境。

●充分學(xué)習(xí)產(chǎn)品使用手冊，否則非專業(yè)人員可能會造成人身危險。

Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.

●服務(wù)行業(yè)

適用水泥，木業(yè)，石業(yè)，橡膠，石油，化工，發(fā)電，環(huán)保，水處理，制冷，交通，鋼鐵，食品，飲料，船舶，制冷等行業(yè)

Applicable to cementwood,stone,rubber,petroleumchemical, power generation