scholarly journals The Study of Law of Distribution by Pipe Length and Transparency on Transportation of Cotton with Pneumatic Transport

2021 ◽  
Vol 58 (2) ◽  
pp. 291-295
Author(s):  
Sidikov Akbarhon Khojiakhmadkhonovich Et al.
Keyword(s):  
Transport System ◽  
Practical Experience ◽  
Pneumatic Transport ◽  
Pipe Length ◽  
Technological Processes ◽  
Internal Volume ◽  
Transport Device

The article examines pneumatic transport, one of the main functions of equipment in the sequence of technological processes in ginneries, and gives the main performance of equipment in the pneumatic transport system. Also, the efficiency of the process of transporting cotton in a pneumatic transport device, time of transportation, the share of raw cotton in the internal volume of the air pipeline during transportation and processes in the pneumatic transport system were analyzed on the basis of theoretical and practical experience.

scholarly journals Pneumatic transport of bulk materials in construction of composite floating docks

2021 ◽  
pp. 1-14
Author(s):  
A.S. Rashkovskyi ◽  
A.V. Shchedrolosiev ◽  
V.M. Neiman ◽  
O.Y. Kanash
Keyword(s):  
Wear Resistance ◽  
Transport System ◽  
Flow Rate ◽  
Pneumatic Transport ◽  
Pipe Diameter ◽  
Bulk Materials ◽  
Useful Life ◽  
Materials Used ◽  
Theoretical Results

Investigations of pneumatic transport of bulk materials used in shipbuilding have carried out. Their abrasiveness, wear of straight and curved sections of pipelines were investigated. Theoretically, the dependences of the amount of wear on various factors were defined: abrasiveness and concentration of transported particles, flow rate, pipe diameter and wear resistance of its material, structural and operational features of the transport system, etc. Formulas for determining the maximum useful life of straight and curved sections of pipelines are obtained. Theoretical results confirmed experimentally.

scholarly journals Research of the dependence of pneumatic conveyor compressors power on project parameters of transport machines

2018 ◽  
Vol 230 ◽  
pp. 01009 ◽  
Author(s):  
Sergij Raksha ◽  
Vladimir Bohomaz ◽  
Igor Shcheka ◽  
Volodymyr Stefanov ◽  
Alex Nesterenko
Keyword(s):  
Transport System ◽  
High Vacuum ◽  
Graphical Analysis ◽  
Pneumatic Transport ◽  
Analytical Dependence ◽  
Transport Systems ◽  
Concentration Coefficient ◽  
Drive Power ◽  
Design Data ◽  
Mixture Concentration

The paper considers the algorithm for calculating the pneumatic transport systems of the main constructions: with high vacuum and with different pressures. The analysis of the dependence of all calculation elements on the design data of the transport system of the considered structures was carried out. In order to accelerate the calculation of such systems, the analytical dependence of the power of the compressor drive on the type of cargo, the coefficient of concentration of the transported mixture, the design productivity, and the geometric parameters of the route, the number and types of auxiliary devices (ells and shutters) are constructed. A graphical analysis of the dependence of compressor drive power of the pneumatic transport systems with high vacuum and with different pressures on the design data: the mixture concentration coefficient, the length of transportation, the design productivity for the transportation of cement with a given route configuration. The directions for further research have been determined.

scholarly journals Leucocytosis‐induced plasma hyperkalaemia in samples conveyed by a pneumatic transport system: tips and tricks

2019 ◽  
Vol 186 (4) ◽  
Author(s):  
Guillaume Grzych ◽  
Jean‐David Pekar ◽  
Patrice Maboudou ◽  
Giuseppe Lippi
Keyword(s):  
Transport System ◽  
Pneumatic Transport ◽  
Tips And Tricks

scholarly journals Innovation in the Transport of Cytotoxic Drugs by a Pneumatic Transport System

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Constance Baillie ◽  
Marion Desplanques ◽  
Stéphanie Delbey ◽  
Ilyes Sakji ◽  
Frédéric Feutry
Keyword(s):  
Service Delivery ◽  
Transport System ◽  
Delivery System ◽  
Storage Temperature ◽  
Care Service ◽  
Pneumatic Transport ◽  
Robotic Arm ◽  
Buffer Storage ◽  
Product Delivery ◽  
Storage Area

AbstractMany chemotherapeutic compounding units are confronted with the problem of product delivery to different care wards. We think that transport by a pharmacy agent does not permit appropriate traceability (wrong care service delivery), control of storage temperature and management of urgency. We have developed a delivery system based on the association of a pneumatic transport system (PTS) and monitored buffer storage area. Thus, after pharmaceutical inspection, chemotherapies are placed in specific and hermetic carriers in the PTS but not directly delivered to care units. In the monitored buffer storage, a robotic arm organizes chemotherapies and waits for the nurse call just before administration. This system permits a real traceability for each stage of the chemotherapy circuit and so, we are now able to certify that chemotherapeutics have been maintained at the correct temperature through continual monitoring. It’s an important prerequisite in standardization and reassignment. Finally, an important issue linked to the use of PTS is the risk of damaging the chemotherapeutics. Data obtained from literature and manufacturers for antibodies highlight the low risk to use a PTS.

Causes of damage to the raw cotton in the pneumatic transport system and ways to reduce it

2021 ◽  
Vol 11 (5) ◽  
pp. 1097-1102
Author(s):  
Boltabaev Bekzod Egamberdiyevich ◽  
Maxkamov Anvar Muhamatxonovich ◽  
Turaboyev Gulomjon Odiljonovich ◽  
Axmadjonov Dilshodbek Marufjon Ogli
Keyword(s):  
Transport System ◽  
Pneumatic Transport

Calculation of pressure losses during pneumatic transport

2020 ◽  
pp. 51-55
Author(s):  
S. F. Shishkin ◽  
A. S. Shishkin ◽  
V. B. Ponomarev
Keyword(s):  
Pressure Loss ◽  
Air Flow ◽  
Integral Form ◽  
Operating Mode ◽  
Pneumatic Transport ◽  
Isothermal Model ◽  
Pipe Length ◽  
Pressure Losses ◽  
Gauss Method ◽  
High Concentrations

A method for calculating pressure losses during pneumatic transport is considered with the aim of choosing the most favorable operating mode, which allows to reduce the consumption of compressed air. It has been established that the generally accepted formulas for calculating pressure losses along the path, calculated as the sum of the pressure losses for pure gas and material, do not explain the fact of the initial decrease in pressure losses with increasing air flow rate, and then their growth. The importance of accounting for changes in air density and air flow velocity along the length of the pipe, as well as the need to take into account the overlap of part of the pipeline section with material in the case of high concentrations, is shown. It is proposed to determine the pressure loss using the Bernoulli equation in integral form, for example, the Gauss method using eight nodes. The applicability of the method for calculating both straight and inclined sections of pipelines is established. The experimental results of studying and analyzing the proposed isothermal model in a vacuum pneumatic transport laboratory installation are presented. An example of calculating the pressure loss for an industrial pneumatic conveying system with a pipe length of 450 m and an inner diameter of 147 mm at various flow rates of the material is shown. Ill. 4. Ref. 21. Tab. 1.

Adjusting a pneumatic transport system

Metallurgist ◽  
1982 ◽  
Vol 26 (11) ◽  
pp. 408-409
Author(s):  
D. P. Filimontsev ◽  
M. A. Lizogubov ◽  
A. G. Shevdov ◽  
Yu. V. Kolesnichenko ◽  
M. L. Rubal'skii
Keyword(s):  
Transport System ◽  
Pneumatic Transport

A Pseudo-Outbreak due toAcinetobacterSpecies (GIM-1) Contamination of the Pneumatic Transport System of a Large University Hospital

2014 ◽  
Vol 35 (11) ◽  
pp. 1364-1372 ◽  
Author(s):  
Mathias Herrmann ◽  
Sven Jungmann ◽  
Alexander Halfmann ◽  
Alik Dawson ◽  
Martin Kaase ◽  
...  
Keyword(s):  
Transport System ◽  
Tertiary Care ◽  
Multidrug Resistant ◽  
Pneumatic Transport ◽  
Positive Patient ◽  
University Hospital ◽  
Potential Hazard ◽  
Outbreak Management ◽  
Carbapenem Resistant ◽  
Management Procedures

Objective.To establish the source and contamination routes resulting in positive clinical and surveillance microbiological cultures with carbapenem-resistant, GIM-1 metallo-β-lactamase–positiveAcinetobacter pitiiandAcinetobacter radioresistensfrom 21 patients in 8 departmentsDesign.Retrospective, descriptive study.Setting.A 1,300-bed tertiary care academic medical facility consisting of 90 buildings linked by a pneumatic transport system (PTS).Methods.Microbiological workup of the cluster strains included matrix-assisted laser desorption/ionization time-of-flight species identification, phenotypic carbapenemase tests, polymerase chain reaction–based genotyping of carbapenemase, and pulsed-field gel electrophoresis. Outbreak management procedures were employed according to institutional regulations.Results.The rarity of GIM-1Acinetobacterspecies in the hospital and region, the lack of epidemiological links between patients, and the fact that in some patients the apparent colonization was clearly nonnosocomial prompted the suspicion of a pseudo-outbreak. Numerous environmental cultures were positive for GIM-1-positiveAcinetobacter(including archived sample requisition forms, PTS capsules, cultures from line-diverter and dispenser stations, and sterilized transport capsules following PTS delivery). Moreover, it was observed that condensation fluid from subterranean PTS tubing resulted in water entry in PTS capsules, possibly conferring specimen contamination. After extensive system disinfection, environmental surveys of the PTS were negative, and no further positive patient specimens were encountered.Conclusions.This is the first report of a PTS-associated pseudo-outbreak. The large number of falsely positive patient-related specimens in conjunction with the potential hazard of airborne and contact spread of multidrug-resistant microorganisms (in this case, GIM-1 carbapenem-resistantAcinetobacterspecies) underscores the need for implementation of infection control–based monitoring and operating procedures in a hospital PTS.

Premises of using triboelectric charge for identification of the granular product flowing in a pneumatic transport system

2015 ◽  
Author(s):  
Imene Nassima Mahi ◽  
Khouira Senouci ◽  
Amar Tilmatine ◽  
Radjaa Messafeur ◽  
Farid Miloua ◽  
...  
Keyword(s):  
Transport System ◽  
Pneumatic Transport
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