基于光纤传感的带式输送机张力检测技术

针对目前带式输送机张力检测存在易损坏及准确性和可靠性差的问题,提出了一种基于光纤传感的带式输送机的张力检测方法。将法珀腔传感头置于带式输送机张紧装置的液压回路中,液压回路的压力使法珀腔传感头的硅膜片产生形变,引起法珀腔传感头反射光变化;光电解调器光路接收法珀腔传感头的反射光后,经光路解调后得到反射光谱,通过光电解调器电路的光电转换、处理、分析后,得到反射光光谱的自由光谱范围,再根据油缸内部面积计算出带式输送机张力,实现了带式输送机张力检测。根据双干涉效应原理设计了法珀腔传感头,采用Jetson Nano嵌入式系统开发板设计了光电解调器硬件,采用Python语言设计了光电解调器软件,并进行了实验研究。实验结果表明:该方法能够实现带式输送机张力检测,压力测量范围为0~25 MPa,灵敏度为0.148 nm/MPa,测量精度为0.1%,不易损坏,抗干扰性好,准确性和可靠性高。

掘进机一运张紧油缸工艺性改进设计

通过对张紧油缸改进前和改进后工艺性对比分析,说明产品结构设计与工艺性验证同等重要。

隔水套管张紧器油缸性能及制造技术

以国外某型张紧器油缸为研究对象,结合其实际工况参数及性能要求,运用目前易于实现的制造、检测技术,逐一解决张紧器油缸所需要达到的技术指标。对制造的张进器油缸进行性能试验,结果表明,该张进器油缸在相关性能指标上能满足实际应用要求。

隔水套管张紧器油缸性能及制造技术研究

隔水套管张紧器油缸通过卡瓦将力传递到隔水套管上,给隔水套管提供持续的顶部张力,对隔水套管起到支撑作用,是隔水套管张紧器系统的关键部件。隔水套管张紧器油缸的性能及制造质量好坏关乎隔水套管工作时的稳定性及安全性,深受国内外海上钻井厂家的重视。以国外某型张紧器油缸为研究对象,结合其实际工况参数及性能要求,运用目前易于实现的制造、检测技术,逐一解决张紧器油缸所需要达到的技术指标。对制造的张进器油缸进行性能试验,结果表明,该张进器油缸在相关性能指标上能满足实际应用要求。

一种新型矿用液压挖掘机履带张紧系统的设计

该文综述了一种新型矿用液压挖掘机履带张紧系统。履带张紧系统是履带式行走机构的一个重要组成部分,它的性能好坏对履带式液压挖掘机的行驶性能有很大影响。该文通过分析矿用液压挖掘机的行走工况和履带及张紧缸的受力情况,并对比了各种履带张紧系统的优缺点,设计了一种新型矿用液压挖掘机的履带张紧系统。通过仿真,该履带张紧系统能够在不同路面状况下对履带进行实时张紧,实时监测,使液压挖掘机安全可靠的行走。

掘进机履带行走机构张紧缓冲装置主要参数的确定

履带张紧缓冲装置是掘进机行走机构中的重要部件。介绍了履带张紧缓冲装置的结构和工作原理 ,并结合理论和实践经验 ,介绍了张紧油缸的初张力、工作压力。

刮板输送机链条动态张力控制系统及其应用

针对传统的刮板输送机链条人工张紧方式因张力恒定而导致断刮板、断链事故频发的问题,介绍了一种刮板输送机链条动态张力控制系统的组成、工作原理及操作方式。该系统根据载荷检测装置测量的链条张力值来控制张紧油缸的伸缩量,从而实现链条张力随负载变化的自动控制功能。实际应用表明,该系统降低了链轮、链条的磨损程度以及断刮板、断链事故的发生率,延长了刮板输送机的使用寿命。

热张减工艺对高频焊管API圆螺纹抗粘扣性能的影响

如何提高高频焊管API圆螺纹的抗粘扣性能一直是油套管生产厂家的重点研究课题,通过对采用热张减工艺生产的高频焊管作为管坯生产的油套管的API圆螺纹抗粘扣性能进行分析,从热张减工艺对焊管性能的影响、API圆螺纹粘扣失效机理、螺纹参数选配、接箍镀层选用、现场实际作业要求等方面进行了归纳分析,总结了热张减工艺对高频焊管API圆螺纹抗粘扣性能的影响,提出了一些在油套管生产中应注意的问题,具有一定的借鉴意义。

摆动式刮板输送机补偿张紧机构设计及结构改进

分析阐述了刮板输送机摆动时产生刮板链运行轨迹变化的原因及其危害,根据刮板输送机功能结构计算出了刮板链运行轨迹变化量。详细介绍了一种简单的连杆式补偿机构,通过理论分析及作图法提出了连杆结构尺寸的确定方法。针对补偿机构与张紧机构联合工作过程中出现的运动干涉问题,提出了一种切实可行的张紧油缸改进方法。

履带行走机构张紧缓冲装置主要参数的确定

在分析履带行走机构张紧缓冲装置工作原理的基础上。

路面冷铣刨机履带张紧缓冲装置设计参数分析

在分析了路面冷铣刨机履带行走机构张紧缓冲装置工作原理的基础上,系统地介绍了履带行走机构张紧缓冲装置主要设计参数的确定及计算方法,并给出了履带张紧缓冲装置的设计原则。

无极绳绞车张紧装置的改进研究

无极绳绞车具有运输距离长、载荷大等优点,但是无极绳绞车在巷道坡度大、运输距离长以及载重大等环境中运送时,会出现由于钢丝绳延伸量超过张紧装置最大张紧力而导致钢丝绳张紧力不足问题,给无极绳绞车正常使用带来不利影响。本文在分析矿井无极绳绞车采用的张紧装置结构基础上,在原有张紧装置中增加布置一组储能器及张紧油缸,增加装进装置伸缩量的同时张紧装置改进工程量较低,确保无极绳牵引钢丝绳张紧力。

长距离带式输送机液压张紧装置研究

针对传统带式输送机存在的张紧力调节能力有限等问题,对一种长距离带式输送机的张紧机构进行了研究,首先对该装置的组成结构进行了分析,然后分别从控制流程、液压系统控制原理、系统工作过程等方面对该装置的工作原理进行了研究,并提出该装置在调节行程、响应速度、降耗提效、远程监控等方面具有独特优势,具有较好推广应用价值。

掘进机中间运输机液压张紧装置设计

介绍了悬臂式掘进机运输机丝杠张紧装置与油缸张紧装置的结构,简要分析了2种张紧装置的优缺点,对运输机所需要的链条张紧力进行了分析计算,并以此为依据对油缸张紧装置的液压油缸进行了设计计算。

Study of Oil/Water Interfacial Tension of Vacuum Residual Fractions from Iranian Light Crude Oil

The vacuum residual from Iranian Light crude oil are separated into a series of 16 narrow fractions according to the molecular weight by the supercritical fluid extraction and fractional (SFEF) technology. The chemical element and the UV spectrum of each fraction are analyzed. The effects of several factors on the interfacial tension are investigated, which are the fraction concentration in oil phase, the ratio of oil component, the salts dissolved in the water phase and the pH value. The interfacial tension decreases rapidly as the concentration of the residual fraction in the oil increases, showing a higher interfacial activity of the fraction. The interfacial tension changes, as the amount of absorption or the state of the fractions in the interface changes resulting from different ratios of oil, different kinds or concentrations of salts in water, and different pH values. It is concluded that the interfacial tension changes regularly, corresponding to the regular molecular parameters of the vacuum residual fractions.

Combination of a crude oil-degrading bacterial consortium under the guidance of strain tolerance and a pilot-scale degradation test

Under the guidance of strain tolerance, a new combination method for crude oil-degrading bacterial consortium was studied. Firstly, more than 50 efficient crude oil-degrading and biosurfactant producing bacteria were isolated from petroleum-contaminated soil and water in Tianjin Binhai New Area Oil field, China. Twenty-four of them were selected for further study. These strains were identified as belonging Pseudornonas aeruginosa, Bacillus subtilis, Brevibacillus brevis, Achrornobacter sp., Acinetobacter venetianus, Lysinibacillus rnacroides, Klebsiella oxytoca, Stenotrophornonas rhizophila, Rhodococcus sp. and Bacillus thuringiensis. A shake-flask degradation test revealed that 12 of these strains could degrade over 50% of 1% crude oil concentration in 7 d. Of these, 8 strains were able to produce biosurfactants. Furthermore, environmental tolerance experiments indicated that the majority of the strains had the ability to adapt to extreme environments including high temperatures, alkaline en- vironments and high salinity environments. A mixed bacterial agent comprising the strains WB2, W2, W3 and HA was developed based on the environmental tolerance tests and subjected to the pilot-scale degradation test indicating that this bacterial agent could degrade 85.2% of 0.8% crude oil concentration in 60 d. Our results suggest that the application of this mixed agent could remediate crude oil polluted soils in saline and alkaline environments.

关于CM760D液压潜孔钻机推进链条系统的改进

通过对CM760D液压潜孔钻链条推进系统张紧油缸损坏率高的分析研究,进行优化改进。达到进口零件国产化替代,起到降低成本,减少机台故障,缩短维修工时的目的。

Study of the Chemical Flooding Effect in Gao-63 Reservoir

This article is aimed to discuss the impact of using two different kinds of surfactant in enhancing oil recovery in heterogeneous reservoirs. With the background of Jidong oilfield, Rui Feng surfactant which could reach ultra-low interracial tension and combination surfactant RZ-JD80 with strong emulsifying property are chosen to do oil displacement and profile control-oil displacement experiment in homogeneous core and heterogeneous core respectively. The experiment is aimed to study the effect of oil displacement by injecting surfactant individually and the effect after injecting different profile control agent slug before surfactant flooding in heterogeneous cores. The results suggest that injecting Rui Feng surfactant and RZ-JD80 individually could enhance the oil displacement efficiency about 15 percentage points for homogeneous core. For strongly heterogeneous core, it is low efficiency by using either of these two surfactants individually. However, if injected a very little profile control agent slug before surfactant flooding, both of these two kinds of surfactant could enhance the oil recovery by different degree, especially, polymer microsphere plugging^RZ-JD80 flooding composite technology is more adaptable to Gao-63 reservoir. This technology could increase the recovery by 18.52 percentage points aRer surfactant flooding.

Time-domain Analysis of FPSO-tanker Responses in Tandem Offloading Operation

Problems experienced during Floating Production, Storage and Offioading （FPSO） tandem offloading operations were investigated. The aim of this research was to improve the reliability of such systems, and it needed a means to assess them. Time-domain simulation and analysis of offioading systems was performed using the multi-body mooring software ARIANE 7.0. Hydrodynamic interaction between the vessels was considered. The responses of the offioading system in different loading cases, different parameters of offioading hawsers and the effects of challenging environmental conditions were calculated. There was a focus on the problems of relative motion between the two bodies and its effects on the intensity of hawser forces. Minimum relative distance, maximum relative headings and maximum tension in the hawsers of offloading systems were obtained by time-domain analysis. The time-domain analysis was effective and comparative study can be used to optimize parameters of the system and extend operating limits.