新聞動態(tài)
News
|
實驗室通風柜排風及補風系統(tǒng)運行及控制方案1. 通風柜方案 1. ventilator scheme 1～12層的普通實驗室采用旁通型定風量通風柜（有特殊要求的除外），13～14層的理化實驗室采用旁通型定風量通風柜和變風量通風柜，具體配置詳見設計圖紙。通風柜應滿足國家相關(guān)規(guī)范及標準要求，且均應配置傳感器及控制器（根據(jù)監(jiān)測的面風速調(diào)節(jié)對應的變風量閥開度）。 The 1~12 level common laboratory adopts bypass type constant air volume ventilation cabinet (except for special requirements), and the 13~14 level physical and chemical laboratory adopts bypass type constant air volume ventilation cabinet and VAV ventilation hood, and the detailed design is detailed in the design drawings. The fume hood should meet the requirements of relevant national codes and standards, and sensors and controllers should be equipped. 2. 1～12層普通實驗室通風柜系統(tǒng)控制 Control of ventilator system in 2.1 to 12 layers general laboratory 平時關(guān)閉通風柜排風及補風系統(tǒng)上的電動密閉閥（EVD）。當使用通風柜時，通過通風柜上的手動開關(guān)聯(lián)鎖開啟排風及補風系統(tǒng)電動密閉閥，由定風量閥控制排風量恒定；當通風柜面窗不開啟時，排風從旁通口進入不應有噪聲。 The electric closed valve (EVD) on the ventilation and ventilation system of the ventilator is closed at ordinary times. When using the ventilation cabinet, manually switch interlock ventilation cabinet on open air exhaust and air supply system of electric valve, the air valve control exhaust air constant; when the ventilation window opens the counter when the exhaust air from the bypass port into undue noise. 3. 13～14層普通實驗室通風柜系統(tǒng)控制 Control of ventilator system in 3.13 to 14 layers general laboratory (1)單個通風柜實驗室：采用旁通型通風柜，送、排風系統(tǒng)中采用雙穩(wěn)態(tài)定風量調(diào)節(jié)方式來實現(xiàn)通風柜工作狀態(tài)和空閑狀態(tài)下兩個不同風量值間的切換。當實驗室有人且通風柜不使用時，密閉閥EVD開啟，雙穩(wěn)態(tài)定風量閥CVD2處于低檔狀態(tài)，滿足室內(nèi)換氣次數(shù)不小于6次/h的要求；當實驗室有人使用通風柜時，密閉閥EVD開啟狀態(tài)不變，雙穩(wěn)態(tài)定風量閥CVD2處于高檔狀態(tài)，滿足通風柜的排風量要求；當室內(nèi)無人時，手動關(guān)閉密閉閥EVD，節(jié)約能源。 (1) a single ventilator laboratory: a bypass ventilation hood is adopted, and the Bi steady state constant air volume regulation method is applied to the transfer and exhaust system to achieve the switch between two different air volume values under the working condition of the ventilator and the idle state. When someone and laboratory ventilation cabinet when not in use, the closed valve EVD opens, bistable air valve CVD2 is in the low state, meet the indoor ventilation rate not less than 6 /h; when people use the laboratory ventilation cabinet, closed valve EVD open state. The bistable fixed air flow valve in the high-grade CVD2 state. To meet the requirements of exhaust ventilation cabinet; when no indoor, closed manually closed valve EVD, energy saving. (2)多個通風柜實驗室：采用旁通型通風柜和變風量通風柜，送、排風系統(tǒng)中采用雙穩(wěn)態(tài)定風量調(diào)節(jié)方式和變風量調(diào)節(jié)方式來實現(xiàn)通風柜工作狀態(tài)和空閑狀態(tài)下風量值間的切換。當實驗室有人且通風柜不使用時，密閉閥EVD開啟，雙穩(wěn)態(tài)定風量閥CVD2處于低檔狀態(tài)，滿足室內(nèi)換氣次數(shù)不小于6次/h的要求。當實驗室有人使用通風柜時，密閉閥EVD開啟狀態(tài)不變，如使用旁通型通風柜，則雙穩(wěn)態(tài)定風量閥CVD2處于高檔狀態(tài)，滿足通風柜的排風量要求；如使用變風量通風柜，則其對應的變風量閥VVD根據(jù)面風速調(diào)節(jié)排風量及補風量，雙穩(wěn)態(tài)定風量閥CVD2處于低檔狀態(tài)不變。當室內(nèi)無人時，手動關(guān)閉密閉閥EVD，節(jié)約能源。 (2) a number of fume hood laboratories: bypass ventilation cabinet and VAV ventilation hood are adopted. The two way steady air volume regulation and variable air volume control mode are applied in the sending and exhausting system to achieve the switching between the ventilation volume and the air volume under idle state. When there is a laboratory and a ventilator is not used, the closed valve EVD is opened, and the bistable steady air volume valve CVD2 is at a low level, which satisfies the requirement that the indoor air change times is no less than 6 times /h. When people use the laboratory ventilation cabinet, closed valve EVD open state unchanged, such as the use of by-pass ventilation cabinet, double steady state constant air volume valve CVD2 in high-grade state, to meet the requirements of exhaust ventilation cabinet; such as the use of VAV ventilation cabinet, then the corresponding variable air valve VVD according to the surface wind speed and exhaust volume fill the air, bistable fixed air flow valve CVD2 in the low state. When the room is unmanned, the closed valve EVD is closed manually, so as to save energy. |
