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空分項(xiàng)目中拖動(dòng)空壓機(jī)的方式有2種，一種是電機(jī)拖動(dòng)，一種是汽輪機(jī)拖動(dòng)。選擇拖動(dòng)空壓機(jī)的原動(dòng)機(jī)，主要還是以經(jīng)濟(jì)和安全為原則。隨著我國(guó)經(jīng)濟(jì)的蓬勃發(fā)展，特別是近年來(lái)冶金、化工、石化等行業(yè)的飛速發(fā)展，要求空分設(shè)備向大型化發(fā)展，空壓機(jī)的功率也隨之越來(lái)越高；而且現(xiàn)在一般新型化工廠很少采用電機(jī)拖動(dòng)的形式。由此可見(jiàn)，采用汽輪機(jī)拖動(dòng)空壓機(jī)的需求是很大的。
將汽輪機(jī)和空壓機(jī)作為一個(gè)統(tǒng)一的被控對(duì)象，其優(yōu)勢(shì)主要體現(xiàn)在以下幾個(gè)方面：
人機(jī)界面統(tǒng)一：可以與空分系統(tǒng)畫(huà)面相互切換，畫(huà)面風(fēng)格統(tǒng)一。
數(shù)據(jù)共享：直接與空分系統(tǒng)共享數(shù)據(jù)。
組態(tài)方便：符合國(guó)際標(biāo)準(zhǔn)的組態(tài)語(yǔ)言和人性化的組態(tài)界面方便用戶對(duì)汽輪機(jī)進(jìn)行算法組態(tài)和畫(huà)面組態(tài)。
控制策略靈活：可以根據(jù)用戶的實(shí)際需求修改和豐富控制策略，空壓機(jī)的測(cè)點(diǎn)可以直接參與汽輪機(jī)的聯(lián)鎖與控制。There are two ways to drive the air compressor in the air separation project, one is motor drive and the other is steam turbine drive. The prime mover for dragging the air compressor is mainly based on the principles of economy and safety. With the vigorous development of China's economy, especially the rapid development of metallurgy, chemical industry, petrochemical and other industries in recent years, air separation equipment is required to develop to large-scale, and the power of air compressor is also higher and higher; And now the general new chemical plants rarely use the form of motor drive. It can be seen that there is a great demand for using steam turbine to drive air compressor.
Taking steam turbine and air compressor as a unified controlled object, its advantages are mainly reflected in the following aspects:
Unified man-machine interface: it can switch with the screen of air separation system, and the screen style is unified.
Data sharing: directly share data with air separation system.
Convenient configuration: the configuration language in line with international standards and humanized configuration interface facilitate the user to configure the algorithm and screen of the steam turbine.
Flexible control strategy: the control strategy can be modified and enriched according to the actual needs of users, and the measuring points of air compressor can directly participate in the interlocking and control of steam turbine.