scholarly journals Wireless Leak Detection System as a Way to Reduce Electricity Consumption in Ventilation Ducts

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3774
Author(s):  
Michał Szelka ◽  
Mariusz Woszczyński ◽  
Jerzy Jagoda ◽  
Paweł Kamiński
Keyword(s):  
Underground Mining ◽  
Detection System ◽  
Ventilation System ◽  
Pressure Sensors ◽  
Electricity Consumption ◽  
Diagnostic System ◽  
Barometric Pressure ◽  
Leak Detection ◽  
Ventilation Network ◽  
Work Related

This article presents a proposal for a wireless diagnostic system for checking the air tightness of the ventilation network. The solution is designed to increase crew safety in underground mining plants and increase the energy efficiency of the ventube ventilation system. The system is based on sensors measuring the pressure inside the ventilation duct in relation to the barometric pressure in the immediate vicinity of the duct. The flow of diagnostic data is based on a cascade transfer. The data from the first sensor are transferred successively to the last one. Based on the prior calibration of alarm thresholds in each device, the leakage or factor influencing the increase of air flow resistance is located. The article presents the genesis of the creation and discusses the principle and purpose of the system. In the following chapters, the progress of work related to testing the system in laboratory, industrial, and underground conditions at the Velenje Premogovnik mine (Slovenia) is presented. The authors analyze the test results and indicate the directions of possible further work on improving the system. The proposed leak detection system is based on a network of pressure sensors that communicate with each other to clearly pinpoint the leak location. The system has been designed for operation in underground mining plants with limited space.

Rapid Temperature Measurement of Meteorological Detection System Based on MEMS

2014 ◽  
Vol 609-610 ◽  
pp. 1185-1188 ◽  
Author(s):  
Yu Fei Lu ◽  
Wen Zhong Lou ◽  
Ming Ru Guo
Keyword(s):  
Simulation Analysis ◽  
Detection System ◽  
Pressure Sensors ◽  
Control Unit ◽  
Barometric Pressure ◽  
Gps Receiver ◽  
Volume Weight ◽  
Environment Temperature ◽  
Rapid Temperature ◽  
Micro Control Unit

This paper is based on a meteorological detection system, which contains MEMS barometric pressure sensors, MEMS temperature sensors, MEMS humidity sensors and GPS receiver. The micro control unit of this system is based on C8051F120 microcontroller. By Comparing SHTXX series of temperature and humidity sensor and PT100 thermal resistance, we obtain a measurement scheme that can measure environment temperature rapidly and relatively accurate when the volume, weight and power are limited. It can meet the harsh environments and high reliable needs. In addition, the simulation analysis and the experiment of temperature are carried out.

scholarly journals Influence of wind conditions and pressure the influence of atmospheric air on the reliability of mine ventilation and the human body

2021 ◽  
pp. 148-159
Author(s):  
И.Д. Алборов ◽  
В.Б. Заалишвили
Keyword(s):  
Human Body ◽  
Ventilation System ◽  
Barometric Pressure ◽  
Work Capacity ◽  
Ventilation Network ◽  
High Mountain ◽  
Atmospheric Air ◽  
Air Supply ◽  
The Stability ◽  
Different Levels

Статья посвящена обоснованию учета естественной тяги на эффективность и надежность проветривания рудников со сложной вентиляционной сетью при многоштольневом вскрытии месторождений полезных ископаемых. Цель работы. Показан уровень на легкие горнорабочих в условиях пониженного атмосферного давления. В статье приведены результаты исследований по влиянию метеорологических и геофизических факторов на надежность проветривания вентиляционных систем в условиях высокогорья. Показана динамика влияния ветровых потоков при штольневом вскрытии месторождений на устойчивость воздухоснабжения горных выработок и шахт в целом. Методы работы. Дается теоретические формулы по расчету естественной тяги при различных направлениях вектора скорости воздушных потоков на дневной поверхности. Приведен метод учета естественной тяги в различных уровнях барометрического давления. Результаты работы. Показан учет барометрического коэффициента при различных уровнях расположения горной выработки над уровнем моря. Показано, что без учета геофизических факторов метеоусловий местности обеспечение надежного проветривания рабочих мест рудника невозможно. Отмечено, что снижение парциального давления кислорода в альвеолах легких приводит к нарушению нормального ритма дыхательной функции организма человека. Это способствует к развитию дисфункции и ослаблению резистентности человека и к иным заболеваниям, что снижает потенциальную работоспособность и профессиональные качества трудящегося. Вводятся соответствующие корректирующие коэффициенты по нормируемой запыленности и по системе вентиляции для обеспечения надежной работы при всех отклонениях. Дается рекомендации по учету барометрического давления при нормировании вредных выделений в рудничную атмосферу. Предлагаемое решение учета давления атмосферного воздуха рекомендовано Госгортехнадзору и Государственным учреждениям санитарно-гигиенического нормирования внести в коррективы по нормированию вредных веществ в воздухе рабочей зоны с учетом барометрического коэффициента, что позволит снизит нагрузку на легкие работающих и уровень профзаболевания горняков. The paper is devoted to substantiation of consideration of natural draught on efficiency and reliability of ventilation of mines with complex ventilation network in multi-wall opening of mineral deposits. The level on lungs of miners in conditions of reduced atmospheric pressure is shown. Aim. The article presents the results of studies on the influence of meteorological and geophysical factors on the reliability of ventilation systems in high mountain conditions. It shows the dynamics of the influence of wind flows during adit opening of deposits on the stability of air supply of mine workings and mines as a whole. The theoretical formulas for calculating the natural draught at different directions of the velocity vector of air flows on the day surface are given. Methods. The method of taking into account the natural draught in different levels of barometric pressure is given. Consideration of the barometric coefficient at different levels of the location of the mine above sea level is shown. Results. It is shown that without taking into account geophysical factors of meteorological conditions of the area to ensure reliable ventilation of working places of the mine. It is noted that the decrease of the partial pressure of oxygen in the lung alveoli leads to disturbance of the normal rhythm of the respiratory function of the human body. This contributes to the development of dysfunction and weakening of human resistance and other diseases, which reduces the potential work capacity and professional qualities of the worker. Appropriate correction factors for normalized dustiness and ventilation system are introduced to ensure reliable operation under all deviations. Recommendations are given for taking into account barometric pressure when rationing harmful emissions into the mine atmosphere.The proposed solution for taking into account atmospheric air pressure is recommended to Gosgortechnadzor and State institutions of hygienic rationing to make adjustments for rationing harmful substances in working area air with regard to the barometric factor, which will reduce the burden on workers' lungs and the level of occupational diseases of miners

Pipeline Diagnostics With Ultrasonic Meters

2016 ◽  
Author(s):  
Nicole Gailey ◽  
Noman Rasool
Keyword(s):  
Real Time ◽  
Measurement Errors ◽  
Flow Measurement ◽  
Detection System ◽  
Leak Detection ◽  
The United States ◽  
Time Data ◽  
Critical System ◽  
Detection Systems ◽  
Transient Models

Canada and the United States have vast energy resources, supported by thousands of kilometers (miles) of pipeline infrastructure built and maintained each year. Whether the pipeline runs through remote territory or passing through local city centers, keeping commodities flowing safely is a critical part of day-to-day operation for any pipeline. Real-time leak detection systems have become a critical system that companies require in order to provide safe operations, protection of the environment and compliance with regulations. The function of a leak detection system is the ability to identify and confirm a leak event in a timely and precise manner. Flow measurement devices are a critical input into many leak detection systems and in order to ensure flow measurement accuracy, custody transfer grade liquid ultrasonic meters (as defined in API MPMS chapter 5.8) can be utilized to provide superior accuracy, performance and diagnostics. This paper presents a sample of real-time data collected from a field install base of over 245 custody transfer grade liquid ultrasonic meters currently being utilized in pipeline leak detection applications. The data helps to identify upstream instrumentation anomalies and illustrate the abilities of the utilization of diagnostics within the liquid ultrasonic meters to further improve current leak detection real time transient models (RTTM) and pipeline operational procedures. The paper discusses considerations addressed while evaluating data and understanding the importance of accuracy within the metering equipment utilized. It also elaborates on significant benefits associated with the utilization of the ultrasonic meter’s capabilities and the importance of diagnosing other pipeline issues and uncertainties outside of measurement errors.

scholarly journals Leak Detection Systems for Short Pipelines

2000 ◽  
Author(s):  
Renan Martins Baptista
Keyword(s):  
Detection System ◽  
Leak Detection ◽  
Low Complexity ◽  
Transient Model ◽  
Service Companies ◽  
Detection Systems ◽  
Volume Balance ◽  
Pipeline Networks ◽  
Phase Liquid ◽  
Flow Detection

This paper describes procedures developed by PETROBRAS Research & Development Center to assess a software-based leak detection system (LDS) for short pipelines. These so-called “Low Complexity Pipelines” are short pipeline segments with single-phase liquid flow. Detection solutions offered by service companies are frequently designed for large pipeline networks, with batches and multiple injections and deliveries. Such solutions are sometimes impractical for short pipelines, due to high cost, long tuning procedures, complex instrumentation and substantial computing requirements. The approach outlined here is a corporate approach that optimizes a LDS for shorter lines. The two most popular implemented techniques are the Compensated Volume Balance (CVB), and the Real Time Transient Model (RTTM). The first approach is less accurate, reliable and robust when compared to the second. However, it can be cheaper, simpler, faster to install and very effective, being marginally behind the second one, and very cost-efective. This paper describes a procedure to determine whether one can use a CVB in a short pipeline.

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