pressure operation

Under the conditions of full-circumferential heating and half-circumferential heating, the heat transfer and pressure drop characteristics of internally ribbed tube with the diameter of φ 28 × 6 mm used in the furnace water wall of 600 MW supercritical sliding pressure operation once-through boiler was studied experimentally.

本文在全周加热和单侧加热的条件下，对600MW超临界变压运行直流锅炉水冷壁φ28×6mm内螺纹管进行了传热与阻力特性的试验研究。

Since the system have been operated, the unit can have a good adaptation in the sliding pressure operation mode, while still achieving the six coordinated control system implementation ( Manual 、 Basic Boiler 、 Turbine Follow 、 DEB 、 Turbine Base 、 ADS) bumpless switching between.

系统投入运行后，机组能够较好地适应滑压运行方式，同时还能实现协调控制系统的六种实现方式（手动、锅炉基本、汽机跟随、DEB、汽机基本、ADS）之间的无扰切换。

This paper analyzes the coal mixed match, boiler combustion and sliding pressure operating of steam turbines, building the fuzzy math model of coal mixed match, boiler combustion advanced control model based on parameter prediction and steam turbine advanced operating model based on sliding pressure operation.

本文通过对燃煤掺配、锅炉燃烧、汽轮机滑压运行进行系统分析，建立了混煤掺配的模糊数学技术模型、基于参数预测的锅炉燃烧优化控制模型和基于滑压运行的汽轮机优化运行模型。

Calculation Model of Sliding Pressure Operation Range

汽轮机滑压运行可行压力区间计算模型研究

In order to reduce the loss of turbine throttle valve regulator and guarantee a high unit efficiency, the sliding pressure operation mode is widely used when unit load is changing.

为了减小汽轮机调节阀的节流损失并保证较高的机组运行效率，火电机组变负荷时采用滑压运行方式。

At last, the main steam pressure during optimum sliding pressure operation of the unit at a given load is determined, and the theoretically calculated and the tested main steam pressures during optimum sliding pressure operation are basically the same.

最后，确定了机组在给定负荷下最佳滑压运行的主蒸汽压力，理论计算和试验结果表明，最佳滑压运行主蒸汽压力基本相同。

Thermal impedance of 4.982 × 10~ (-3) K · cm~ 2/ W can fit the need of high power semiconductor laser stacks under the actual drop of operation water pressure.

但在热沉实际工作的水压降条件下，热阻为4.982×10-3K·cm2/W，它能满足高功率激光器叠阵的需要。

Effective stopping bleeding during operation and controlling blood pressure after operation, as well as keeping effective sedation in 24 hours after operation were the important ways to prevent from intracranial hematoma. The haemorrhage often accrued in 48 hours post-operation.

术中彻底止血、术后控制血压、术后24h内有效的镇静方式是防止术后颅内血肿的重要步骤，术后48h为出血期，发生颅内血肿应尽早手术处理；

With a view to solving the above problem, the improvement of the UP boiler, especially the possibility of using variable pitch waterwall for sliding pressure operation based on the calculation of the effectiveness factor for furnace wall area, is explored in this article.

鉴于上述问题，本文就UP炉的改进问题，从炉膛水冷壁角系数的计算分析开始，探讨UP炉采用变节距水冷壁对于滑压运行的可能性。

USC unit has many features, such as high specs, sliding pressure operation, fast startup and shutdown, and high steam quality, etc.

超（超）临界机组具有高参数、滑压运行、快速启停和水汽品质要求高等特点，在机组启动试运期间需进行热力系统净化。

In this paper, benzoic acid refining distillation system with SNIA benzene liquid phase process was researched via simulation. The effect of theoretical tray numbers 、 operation pressure 、 reflux ratio 、 feeding position etc.

本文对SNIA甲苯液相法生产苯甲酸产品精馏系统进行了研究，考察了三个精馏塔的理论板数、操作压力、回流比、进料位置等条件对SNIA苯甲酸产品质量的影响。

But the sliding pressure operation curve is often obtained by people practical experience. So the control effect is difficult to guarantee.

但是目前电厂通常依靠实际经验来确定变负荷时的滑压运行曲线，这样得到的滑压曲线随机性较大，控制效果难以保证。

Respectively when supercritical unit is in constant pressure operation and sliding pressure operation, the simulation test of primary frequency regulation is carried out at different load, and the test results are compared and analyzed.

分别对超临界机组定压运行、滑压运行时，在不同负荷下进行一次调频仿真试验，并将试验结果进行对比分析。

Eventually, experiment optimization on turbine units were behaved as paradigm to provide further specification on practicality of sliding pressure operation.

最后，通过对典型汽轮机组进行的优化试验，进一步说明了滑压运行优化研究的实用性。

Sliding pressure operation of large turbine units has been termed effective operation mode of power grid peaking regulations. Thus, online optimization on practical power units is necessary for the economic implementations. In this study, an approach combining theoretical guideline with field experiments was proposed.

大型汽轮机组滑压运行是适应电网调峰的有效运行方式，为了最大程度的发挥其运行的经济性，必须对实际运行的机组进行在线寻优，本论文采用理论指导和实际试验相结合的方法。

Analysis of negative pressure operation of a biosafety level-3 laboratory

对某BSL-3级实验室负压运行相关问题的分析

The hydrodynamic characteristics are reliable not only in supercritical pressure but also in sliding pressure operation ( sliding pressure operation refers to 50-90% MCR and constant pressure operation to below 50% MCR and above 90% MCR).

无论是超临界压力或变压运行（系指在50～90%MCR负荷时变压运行），水动力特性是可靠的.超临界压力时没有传热恶化现象发生。

The low-pressure ion chromatography ( LPIC), which is made up with special packing material can use common peristaltic pump instead of high pressure pump, thus reduces the cost of the instrument and avoids of jam and leak under high pressure operation.

采用特殊柱填料的低压离子色谱柱可用常见蠕动泵取代高压泵，降低了仪器成本，且避免了高压操作下发生的堵塞，泄漏等现象。

Taken bovine muscle for example, the influence of operation conditions, such as surface temperature of the material being dried, chamber pressure and thickness of slab, was analyzed based on the drying dynamic model and the exergy loss model.

结合升华干燥动力学模型和损失分析模型，以牛肉为冷冻干燥过程的模型物料，计算了物料表面加热温度、干燥室压力和物料厚度等操作条件的变化对升华干燥过程损失的影响。

Theory and Practice of High Top-Gas Pressure Operation

高压操作的理论和实践

Safety and Economy Analysis of Sliding Pressure Operation of Large Units

大型亚临界汽轮机发电机组的滑压运行安全经济性对比研究

Meanwhile full-capacity HP bypass can replace the safety valve of superheater, and monitor the unit sliding pressure operation with its overflow function so as to improve the safety of turbine greatly.

全容量高压旁路能取代过热器安全门，并能进行滑压运行跟踪溢流，提高汽轮机的安全性；

Under several low load operation conditions, performance tests of fixed pressure and sliding pressure operation have been carried out for a125MW steam turbine.

在几种低负荷运行工况下对125MW汽轮机组进行了定压、滑压性能试验。

Through a monitoring of the change in steam turbine back pressure during the operation of an air cooled turbine unit, the degree of dust accumulation can be forecasted, thus providing a theoretical basis for cleaning air cooled condensers.

通过监测空冷机组运行过程中汽轮机背压的变化，可预报积灰的程度，为直接空冷凝汽器清洗提供一定的理论依据。

Optimization on Sliding Pressure Operation Mode of 600 MW Steam Turbines

600MW汽轮机组滑压运行方式的优化

The effects of corrosion rate, defect depth, thickness of pipe and operation pressure on pipeline reliability were investigated with this model.

利用这一模型，研究了腐蚀速率、缺陷深度、管道壁厚和工作压力等因素对管线可靠性的影响。

This paper introduces advantages and problems of sliding pressure operation of deaerator, states measurements to prevent boiloff of entrance of water-supplying pump.

本文介绍了除氧器滑压运行的优点和问题以及除氧器滑压运行防止给水泵入口汽化的措施。