Means of filling gas-filled cars. Lecture No 7. Part 2. Design features of mobile automobile gas filling stations with liquefied petroleum gas (AGZS)

Author(s):  
V.I. Erokhov

The characteristics and parameters of mobile means of transportation and refueling of LPG are given. The characteristics of a mobile automobile gas filling station of frame and frameless construction are analyzed. The basic technological scheme of the APCT-9611 gas tanker is given. The characteristics and operating principle of the shut-off and safety equipment of the transport tank are given. A design diagram of an electric pump for supplying LPG to a mobile gas tanker is presented. A schematic diagram of a reciprocating LPG flow volume Converter is presented. The features of the mechanical and electromagnetic LPG level indicator in a transport tank are described. A schematic diagram of a mobile universal (discharge/filling) gas process module UTMG-01 is shown. Keywords: liquefied petroleum gas; mobile frame and frameless construction of a tanker truck; characteristics and parameters of the station; gas equipment, pumping unit; gas meter; principle and operating modes of the LPG level indicator. [email protected]

A schematic diagram of an underground stationary automobile gas filling station with liquefied petroleum gas (LPG) is presented. The characteristics of a stationary underground storage and refueling tank for LPG vehicles are given. A set of equipment for a stationary ground station of the gas station is given. The features of the underground stationary gas station are described. The principle of operation of a centrifugal LPG supply pump is described. A design diagram of a vortex electric pump for LPG supply is presented. The diagram of the filling clamp with the hose of the filling column of the gas station is shown. The basic scheme of a ground-based stationary gas station is analyzed. The diagram of a self-priming pumping unit of a stationary gas station with underground tanks is shown. The device of a multi-stage compressor for LPG supply is described. The characteristics and principle of operation of the modern LPG filling gun are given. Keywords liquefied petroleum gas; underground and ground filling stations; characteristics of the station; gas equipment of the station; single-stage and multi-stage compressor; operational and technical characteristics; principle and operating modes


Author(s):  
V.I. Erokhov

The characteristics and master plan of a stationary automobile gas filling station (AGPS) of liquefied petroleum gas (LPG) with ground and underground reservoirs are presented. A schematic diagram of architectural and planning solutions of a stationary gas station is presented. The requirements for the maintenance of the territory, buildings and structures of the gas filling station are set out. The calculation of the required number of filling columns and filling stations is given. The calculation of the gas consumption of LPG AGZS is given. The feature of inspection and filling of LPG storage tanks is formulated. Keywords liquefied hydrocarbon gas; architectural solutions; underground and overground station; exploitation stations; the inspection of tanks; gas equipment; filling tanks; the calculation of fuel dispensers and gas stations


Author(s):  
V.I. Erokhov

Features of operation of the mobile automobile gas filling station (PAGZS) of the liquefied petroleum gas (LPG) are given. A schematic diagram of the planning solutions of the mobile gas station is given. The procedure for refueling vehicles is described. A feature of the operation of the refueling complex on the basis of a mobile gas station is given. The characteristic features of operation and malfunction of the technological equipment of the mobile gas station are given. The safety features of the technological processes of the gas filling station are summarized. The features of gas station maintenance are described. The features of the system of accounting and release of LPG are described. Keywords liquefied petroleum gas; planning solutions; mobile gas filling station; gas filling station operation; gas equipment; LPG refueling; malfunctions and maintenance; gas filling station safety


2012 ◽  
Vol 238 ◽  
pp. 684-688 ◽  
Author(s):  
Yong Jun Liu ◽  
Bo Ning ◽  
Yu Wang

Bridges are important parts of traffic systems and need to provide the necessary safety for the traveling public. Fire is one of the most severe hazards that bridges may subject to during their lifetime. In recent years, due to rapid development of transportation systems, as well as increasing transport of hazardous materials, bridge fires have become a concern. Bridge fires caused by crashing of vehicles and burning of gasoline are much more severe than building fires and are characterized by a fast heating rate and a higher peak temperature which could lead to bridge collapse. Bridge failures during a fire can result in the disruption of commerce and services, and most importantly the loss of human life. It has become necessary to consider the potential exposure of bridges to flames from oil or liquefied petroleum gas fires. In this paper, potential fire scenarios relevant for a cable-stayed bridge crossing the Yangtze River are analyzed firstly, then the temperature distribution in key elements and the global structural behavior of the bridge under tanker truck fires is calculated by using general purpose finite element analysis software ANSYS. Numerical simulation results demonstrate that cable-stayed bridge may collapse under some specific fire scenarios and it is necessary to consider fire safety in bridge design.


2020 ◽  
Vol 1 (3) ◽  
pp. 29-35
Author(s):  
V.I. Merkulov ◽  
◽  
I.V. Tishchenko ◽  
S.A. Abalakin ◽  
◽  
...  

Most modern aircrafts widely use air conditioning systems in order to ensure comfortable flight conditions for passengers and crew, as well as to cool the equipment of the aircraft. The aircraft in-dustry is developing every year and the requirements for such systems are growing. Preliminary calculations and analysis of such systems are of key importance in their development. Such calcula-tions will help to determine the entire further path of system development and prevent many errors. They also help to regularly improve the performance of systems, in particular, their energy charac-teristics. The main requirements for systems are reliability, energy efficiency, and weight-and-dimensional characteristicss. The paper is devoted to analysis of the efficiency of the system and its individual units. In addition, there is considered separately the influence of third-party factors on the efficiency of the system, in particular, the presence of moisture in the working air flow. This article discusses the results of thermodynamic calculation and analysis by the entropy-statistical method of the air conditioning system in various operating modes. The efficiency of the system as a whole is considered and the influence of imperfection of each of its units in particular is analyzed. The standard parameters of the operation of such systems on airplanes were taken as the initial parameters for calculating the systems. For the analysis, a system with a two-wheel turbo-cooling unit with moisture removal on the high-pressure path was selected. A schematic diagram of the system is given, formulas for calculating the minimum required work to compensate the production of entropy for the units of the system are presented. To ensure the calculations, the software complexes MathCAD, Coolprop and Matlab were used.


Author(s):  
V.I. Erokhov

The classification and standard8size range of modern automobile gas-filling compressor stations (CNG stations) are given. A fragment of the CNG filling station master plan is presented. A schematic diagram of the architectural and planning solutions of a stationary CNG station has been developed. The features of compressed natural gas (CNG) production are summarized. A block diagram of a typical automated system of technological processes of CNG filling stations is presented. The basic, functional and technological scheme of the CNG filling station is given. The design scheme and drive of the multi-stage compressor are developed. The general view and schematic diagram of the gas filling column and its functional components are presented. Keywords compressed natural gas, architectural and planning solutions, classification and characteristics of CNG filling stations, multi-stage compressor, electric drive of the compressor, technological and functional equipment, gas filling column


2015 ◽  
Vol 773-774 ◽  
pp. 415-419 ◽  
Author(s):  
Mohd Hafizil Mat Yasin ◽  
Perowansa Paruka ◽  
Rizalman Mamat ◽  
Mohd Hafiz Ali

In this paper, an experimental study evaluating the effect of exhaust gas recirculation (EGR) and liquefied petroleum gas (LPG) onboard systems attached to a single cylinder DI diesel engine running with diesel is presented. Tests were performed at the minimum (1400 rpm) and maximum engine speeds (4100 rpm). The engine were tested under four different operating modes mainly; (a) standard test condition, (b) engine with EGR system, (c) engine with LPG system and (d) the engine with EGR and LPG onboard systems. Parameters that been measured during the tests are percentage of oxygen (O2) content, carbon monoxide (CO) emissions, carbon dioxide (CO2) and unburned hydrocarbon (UHC) emissions. Results show for the exhaust emissions, the engine with LPG onboard system emits higher CO and UHC emissions for both engine speeds. According to the experimental results it can be concluded that the use of EGR system increased the exhaust gas temperature and CO2emissions. While the engine with EGR and LPG onboard systems have influenced much on the increase in CO and UHC emissions for both engine speeds.


Author(s):  
V.I. Erokhov

The features of the operation of the process equipment of the gas filling station are given. The procedure for refueling vehicles is described. The characteristic features of operation and malfunctions of technological equipment are summarized. The features of technological processes of maintenance of equipment of stationary gas filling stations are described. The characteristics of the current and major repairs are given. The analysis of safety of technological processes of stationary gas filling stations is carried out. The features of the system of accounting for the release of LPG are described. Keywords liquefied petroleum gas; technological equipment; underground and ground station; vehicle refueling; gas equipment; operational and technical characteristics of equipment; malfunctions and maintenance; safety; efficiency and environmental friendliness of


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