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空分項目中拖動空壓機的方式有2種，一種是電機拖動，一種是汽輪機拖動。選擇拖動空壓機的原動機，主要還是以經(jīng)濟和安全為原則。隨著我國經(jīng)濟的蓬勃發(fā)展，特別是近年來冶金、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，空壓機的功率也隨之越來越高；而且現(xiàn)在一般新型化工廠很少采用電機拖動的形式。由此可見，采用汽輪機拖動空壓機的需求是很大的。
將汽輪機和空壓機作為一個統(tǒng)一的被控對象，其優(yōu)勢主要體現(xiàn)在以下幾個方面：
人機界面統(tǒng)一：可以與空分系統(tǒng)畫面相互切換，畫面風(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：符合國際標(biāo)準(zhǔn)的組態(tài)語言和人性化的組態(tài)界面方便用戶對汽輪機進行算法組態(tài)和畫面組態(tài)。
控制策略靈活：可以根據(jù)用戶的實際需求修改和豐富控制策略，空壓機的測點可以直接參與汽輪機的聯(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.