The system combined use of liquefied, for example, gas in the refrigeration installation of the vehicle
(57) Abstract:The device is used in systems of the combined use of liquefied, for example, gas in the refrigeration installation of the vehicle. The system is equipped with a steam line (pipeline), including sequentially connected shut-off valve, the electromagnetic valve of the gas, the battery is cold, which is connected on one side with the fuel tank, on the other hand to the input of the receiver, and the evaporator outlet is piped to the input of the battery is cold. To control the solenoid of the gas valve system equipped with a pressure switch installed on the steam line between the check valves and solenoid gas. The battery is cold and the fuel tank placed in insulated box (chamber) of the vehicle. This increases the cooling capacity of the system. 2 C.p. f-crystals, 1 Il. The invention relates to gas networks, as well as refrigeration and can be used in systems of the combined use of liquid (such as oil, under pressure) hydrocarbon gas (propane, propane-butane mixture), which serves as fuel for dicosola of autorefrigerators, cab separate compartments of motor vehicles, vehicle air conditioning systems.Known refrigerating unit of the vehicle in which the cooling process is intensified through the use of the system battery is cold, in particular due to the vortex tahaliyani battery (1). However, in the known installation is not provided the combined use of liquefied gas fuel to an internal combustion engine and as a refrigerant for a refrigeration system.Known refrigeration vehicles, containing a container of fuel, liquefied under pressure hydrocarbon gas, is connected by a pipeline with a regenerative heat exchanger, regulator high pressure, the evaporator is placed in the insulated box and through the low pressure regulator - with motor vehicle (2, 3).Also known refrigerating unit vehicle operating open-loop liquefied hydrocarbon gas containing the fuel tank, connected in series by tubing with the filter-drier, heat exchanger, separator crystalline, pressure regulator (throttle/P> A disadvantage of known systems is relatively low cooling capacity, which leads to the use of the limited size of the insulated body or insufficient temperature level of the cooling medium therein.The proposed system combined use of liquid, such as oil, gas refrigeration installation of the vehicle can increase the cooling capacity of the installation and to increase the intensity of the cooling of the cooling medium in the insulated box.The technical result of the invention is to increase efficiency (increasing the cooling capacity and the intensity of cooling) of the refrigeration unit. This result is achieved by the joint use of thermodynamic processes of gas expansion in a closed volume (fuel tank of constant volume) and the gas expands at constant pressure.To do this, the system is equipped with a steam line (pipe) connected in series with a shut-off valve, solenoid gas valve, battery cold, connected on the one hand, with the fuel tank, on the other hand, to the input of the receiver, and the output of the vapor is rececca the body of the vehicle. In addition, the system is equipped with a pressure switch installed on the steam line between the shut-off valve and solenoid valve.The drawing shows a hydraulic diagram of the proposed system.The system contains serially connected liquid line (pipe) fuel tank (capacity) 1 with liquefied under pressure hydrocarbon gas (such as propane or propane-butane mixture), manual shutoff valve 2, the electromagnetic gas valve 3, the separator crystalline hydrocarbon 7, the filter-drier 4, the pressure regulator (throttle) 8, the evaporator (cooler) 9, the receiver 10, the vehicle engine 12 connected to a vacuum line 13 with the gas reducer 11.The system also includes a second (steam) line (line), including connected in series manual shut-off valve 14, the electromagnetic gas valve 15, a battery 16 cold, dip relay (PZ) low (LV) and high (Er) pressure 17, the receiver which is located between the check valves 14 and solenoid 15. The pipeline on the one hand is connected with the vapor phase of the fuel tank 1, and with the input of the battery cold 16 and exit lannou the power supply system of the motor vehicle (and, Vice versa) depending on the values of the temperature sensor 20 and a given cooling mode (t) of the cooling medium in the insulated box 18 (not shown). The main elements of the refrigeration unit, generating cold as the evaporator (cooler) 9, a battery of cold 16, fuel tank (capacity) 1 placed in insulated body 18 of the vehicle.The system works as follows.In the initial moment (when open shut-off valves 14, 2), when the gas pressure in the fuel tank 1 high (Pb), the pressure switch 17 outputs a signal to the opening and closing of the electromagnetic gas valves 3 and 14, respectively. Is the cycle expansion of the gas at constant volume. Vapor phase liquid petroleum gas from the fuel tank 1 flows through a steam pipe through a battery of cold 16, the receiver 10, the gear 11 in the engine of the vehicle 12 on the ignition. During operation of the refrigeration installation and sampling of gas from the fuel tank 1 (capacity constant volume) is its extension, accompanied by intense cooling of the liquefied gas in the fuel tank 1, the walls of the fuel tank 1, the vapor phase of liquefied petroleum gas supplied to the battery 18. In the process of expanding gas at constant volume and reducing its temperature to decrease the gas pressure in the fuel tank 1, achieving the ultimate low pressure (PH), which gives the boundary of the stable operation of the vehicle engine 12 and a reduction gear 11. The parameters of the state liquefied gas take values on the lower edge of the curve (corresponding to the beginning of the boiling liquid) with a large value of the latent heat of evaporation of the liquid in comparison with the initial moment of the start of the system, which ultimately allows you to increase the cooling capacity and the intensity of cooling of the cooling medium in the insulated box. When reaching the low pressure (PH) pressure switch 17 outputs a signal to the opening and closing of the electromagnetic valves 15 and 3, respectively. Steam railway is completed and a liquid. Is the cycle expansion of the gas at constant pressure. Liquefied petroleum gas from the fuel tank 1 sequentially passes through the electromagnetic gas valve 3, the separator of crystalline 7, the filter-drier 4, the pressure regulator 8, which expands at constant pressure, is cooled, enters the evaporator (cooler)E. gas in the vapour state is supplied to the battery 16 cold, where the final transfer of cold from the gas in a cooled environment isothermal body 18, the receiver 10 and the vehicle 12 through the gear 11. In the process, the above cycle is an increase in gas pressure in the fuel tank 1 due to the heat leakage from the cooling medium isothermal body. Upon reaching the high values of pressure (Pb) pressure switch 17 again outputs a signal to the opening and closing of the electromagnetic valves 3 and 15, respectively. The duty cycle of expansion of the gas at constant volume is repeated.Tests conducted on autorefrigerators equipped with this system combined use of liquefied gas, showed that increasing the cooling capacity can be no less than 25 - 30%, and the intensity of cooling in the first hour of operation of the refrigeration installation of the vehicle is increased by 15 - 20%.Sources of information:
1. RF patent 2082633, CL F 25 B 9/02, 1997.2. Auth. St. USSR N 726392, CL F 25 B 19/00, 1979.3. Martynov M. S. and other refrigerated transport. - M.: Postorgasmic, 1960, S. 140.4. RF patent N 2053434, CL F 17 D 1/02, 1995. 1. The system combined use of liquefied, for example Nephi hydrocarbon gas, shut-off valve, solenoid valve, connected in series and installed in front of the evaporator filter-drier, the separator crystalline hydrates of hydrocarbons, the pressure regulator and the outlet of the evaporator of fuel gas is connected to the internal combustion engine through a receiver, characterized in that it is equipped with a steam line (pipe) connected in series with a shut-off valve, solenoid gas valve, battery cold, connected on one side with the fuel tank, on the other hand to the input of the receiver, and the evaporator outlet is piped to the input of the battery is cold.2. The system under item 1, characterized in that the battery is cold and the fuel tank placed in insulated body of the vehicle.3. The system under item 1, characterized in that it is equipped with a pressure switch installed on the steam line between the shut-off valve and solenoid valve.
FIELD: pipeline transport.
SUBSTANCE: power plant is additionally provided with a turbine expander provided with an electric generator. Power generated by the steam plant is directed to the main gas pipeline, and a part of power is directed to the turbine expander with electric generator to produce electric power.
EFFECT: enhanced reliability and efficiency.
1 cl, 1 dwg
FIELD: pipeline transport.
SUBSTANCE: method comprises intensifying extraction of low-pressure gas in tanks of oil stabilization due to rarefying gas in the inlet gas collector that connects the tank with the inlet of liquid-gas jet compressors by mixing the pumping product with active agent and increasing initial pressure of the low-pressure gas up to the pressure required by a consumer with simultaneous condensation of C5+ fraction. The gas-liquid mixture is supplied to the air cooling apparatus. After the separation of gas from the active agent, purifying and drying the compressed gas is intensified by supplying the compressed gas into the vortex pipe and, then, to the consumer.
EFFECT: improved method.
FIELD: oil and gas industry.
SUBSTANCE: device comprises device for enhancing and reducing pressure, receiving gas line for supplying the plant with the gas, discharging gas line through which the gas after purification is supplied from the plant, two vortex pipes, ejector, and condensate collector. The inlet of the first vortex pipe is connected with the receiving gas line and outlet of the cold gas flow of the second vortex pipe through the device for enhancing or reducing pressure. The output of the hot flow of the first vortex pipe is connected with the inlet of the first separator through the ejector, and the condensate outlet of the separator is connected with the inlet of the second vortex pipe. The outlet of the cold flow of the second vortex pipe is connected with the receiving gas.
EFFECT: enhanced quality of purification.
1 cl, 1 dwg
FIELD: preparation and transportation of petroleum associated and natural gases.
SUBSTANCE: invention relates to preparation of gas for transportation along gas pipeline and separation of heavy fraction condensate from gas. Proposed plant for preparation of petroleum associated gas or natural gas for transportation along gas pipeline and obtaining of liquid hydrocarbons from gas intake line, device to increase and decrease pressure, gas flow line, liquid hydrocarbons extraction line, three-circuit heat exchanger, separator, expansion valve, two regulating valves and swirl pipe whose input is connected through pressure increasing and decreasing device from one side with inlet gas line through first regulating valve and through series-connected second regulating valve and first circuit of heat exchanger, and from other side, with output of expansion valve. Output of cold flow of swirl pipe is connected through second circuit of heat exchangers with gas flow line, output of hot flow of swirl pipe is connected through third circuit of heat exchanger with input of separator whose condensate output is connected with line to remove liquid hydrocarbons, and gas output, with input of expansion valve.
EFFECT: increased degree of separation of condensate of heavy fractions of hydrocarbons from petroleum associated gas or natural gas designed for transportation along gas pipeline.
FIELD: the invention refers to energy-conservation technologies of pipeline transportation of natural gas.
SUBSTANCE: it may be used for controlling the technological process of the main pipeline with simultaneous selection out of gas of valuable ethane, propane, butane components. The technical result of the invention is reduction of energy inputs for maintaining pressure in the main pipeline, provision of stabilization of pressure in the main pipeline. The mode of transportation of natural gas along the main pipeline includes its feeding into the main pipeline on the first and the following compressor stations and giving out natural gas from the main pipeline through gas reducing stations and divide it on two flows one of them is directed into the pipeline of high pressure, and the other into a consumer pipe-bend. At that the gas of consumer pipe-bend is preliminary cooled and cleared from condensed and hard fraction, and then further cooling is executed till the temperature below the point of condensation of methane and division of cryogenic liquid and directed to the user, and out of received cryogenic liquid methane is separated from liquid ethane-propane-butane fraction which is returned into the pipeline of high pressure and further into the main pipeline, and detailed methane is directed into the pipe-bend. At that the gas in the pipeline of high pressure is preliminary additionally cooled, compremirated and returned into the main pipeline.
EFFECT: reduces power inputs.
7 cl, 1 dwg
FIELD: storage or transporting of natural gas.
SUBSTANCE: method comprises cooling natural gas down to a temperature below the temperature of the ambient air and transporting the cooled natural gas.
EFFECT: enhanced efficiency of storage and transporting.
16 cl, 13 dwg