The method of transportation of gaseous material
(57) Abstract:Usage: the invention can be used in the petrochemical and gas industry, mechanical engineering, in the exhaust ducts of internal combustion engines. The inventive increase the gas flow rate due to a change in flux density in the cross section and the lower static pressure on the axis of the pipeline. The reduction of pressure on the pipeline axis is achieved by rotation of the peripheral layers of gas, resulting in a reduction in the power consumption from the periphery to the longitudinal axis of the pipeline. 2 Il. The invention relates to a technique of transportation, in particular for transporting gas through the exhaust pipe into the car.The expiration of the gaseous mixture through the pipeline is carried out in the presence of differential pressure at a certain length. The more the ratio of the total gas pressure to static pressure at the outlet (cut), the greater is flow flowing stream of gaseous material. The decrease in the total pressure of the gas causes the reduction of its consumption at the expiration of the pipeline with a constant density flow in cross section.The known method transporttasche and its movement with the density change of the flow cross-section on the section of highway (ed. St. USSR N 1634946, CL F 17 D 1/14, 1991).The constancy of the density of the material consumption is provided an automatic change in the cross-sectional area of the pipeline fluctuations in the values of total pressure, or fluctuations in static pressure at the outlet. Such conditions of transportation of the material created due to the flexibility (deformation) of the elements of the inner wall of the pipe (mounting tubes from strips of sheet material) with a longitudinal overlap between the self and the rigid connection of the external longitudinal edges covering the base (outer pipeline). There is a method of transportation requires the creation of hard (core) support one part of the pipeline and the other (internal) flexible in the transverse (radial) direction. This method requires expensive manufacturing process the manufacture of tubing, having a combination of hard (over) part of the pipeline and specially made flexible (internal) in the transverse direction integral part of the pipeline In the known solution is the transportation of the material in the form of a mixture. Transportation of materials in the form of a mixture by pipeline associated with the pulsation of the flow of impermanence odniesieniu short-term boost by increasing the operating pressure at the inlet. Such changes in pressure at the input cause radial deformation of the longitudinal plates of the inner flexible pipelines. Excessive back pressure at the inlet (increase of working pressure) causes and increase the flow of the pressurized working medium (gas, liquid) and in turn occur in a certain way increasing the density of the transported mixture of material in the pipe cross section. For such a working environment, such as gas, there is a tenfold margin changes its density in the cross section (Polytechnical dictionary, M. Soviet encyclopedia, 1980, S. 99). With respect to the exhaust gas of the vehicle there is also a mixture of the material, which is formed at the stage of submission to the working cylinders of the internal combustion engine (fuel injection air), and at the stage leakage from the cylinder after incomplete combustion of the combustible mixture. Transportation by pipeline (exhaust pipe) forced out of the cylinders of the engine materials in the form of a mixture associated with certain overcoming resistance to movement of the mixture, i.e. at the inlet of the exhaust pipe is formed working pressure with a corresponding movement of the piston in the cylinder. Useful work of the piston in the cylinder uzyskanie methods of transporting materials by pipeline with less operating energy for the process of discharge of the working environment is important. In a known solution (prototype) this task has not found its implementation as part of the work of the energy consumed by the deformation of the flexible longitudinal plates in the cross section of the transported material in the form of a mixture.In this invention a method of transporting gaseous materials is carried out with a number of technological features. The technical essence of the method consists in the following. Carry out the injection of gaseous material under pressure at the inlet pipe section, move it (the material) with a constant density flow in each cross section at intermediate pipe section and the output section of the pipeline change the density of the flow of material in the cross section of the pipeline. This reduces the density of the flow of gaseous material in the center of the pipe cross section and provide conditions for increasing the density of the flow at the peripheral part of the same cross-section. Such conditions created by the reduction in static pressure at the exit of gaseous material from the pipeline by bringing the rotation of the peripheral part of the flow. Given the rotation of the peripheral flow creates centrifugal Silene on the axis (center of the cross section) of the pipe increases flow of gaseous material at a constant pressure (or decrease in the total pressure of the gas at constant flow rate). Thus, changing the static pressure on the axis of the pipeline at the expiration of the atmosphere, it is possible to achieve cost reduction work on the compression of the gas at constant flow rate or increasing the gas flow rate at constant cost. The fundamental difference between the proposed method from that used at the present time, under the pressure difference expiring flow and pressure, which is the issue, is that the pressure on the cut pipe installed below the ambient pressure.In Fig. 1 shows a cross-section of the outlet part of the pipeline of Fig. 2 is a view along the axis of this part with the image elements for the peripheral turbulence of the gas stream.Diagram of the device for increasing the flow of gas at constant pressure (reduction of the total pressure at constant gas flow) contains intermediate part 1 and the end part 2 of the pipeline (Fig.1) and the blades 3 guide vanes for swirling the peripheral part of the gas flow (Fig.2).Substantiation of the design parameters of the device for increasing the flow of gas at constant pressure is provided in the following calculation dependencies.Gasodynamic the>1,
where Pandatmospheric pressure (pressure environment, which is the outflow of gas, PA, n/m2);
P01the total pressure of the gas at the entrance of the guide apparatus (PA, n/m2);
Statistical gas pressure on the axis of the feed device for the guide vanes to define dependencies
and gas-dynamic function on the same axis is characterized by the equality
(2)=P2/P01< / BR>and the ratio of the gas velocity on the axis to define dependencies
< / BR>where K is the adiabatic exponent.The expenditure of gas-dynamic function on this axis is characterized by the equation:
< / BR>The gas flow through the hole in the guiding device to define dependencies
< / BR>where m expenditure coefficient of gas (air m 0,04);
F2=d2/4 square holes in the guiding device;
d the diameter of the hole in the guiding device (M);
T01full gas temperature before guiding device (K);
The ratio of the gas velocity at the outlet of the guide vanes is calculated from the equation
< / BR>The expenditure of gas-dynamic function output (the cutoff line of the guide and is from
< / BR>where D is the diameter of the outer guide vane (M);
Evaluation of the increase of gas flow through the hardware device is carried out relations
< / BR>The developed method of transportation of gaseous materials is compared with an existing method with the following benefits:
the cost reduction work on gas compression;
increasing thermodynamic efficiency of the cycle;
reduction of fuel consumption in the automotive and gas turbine engines by reducing the required work on the organization of the exhaust or increases the useful power at constant fuel flow;
the exhaust gas from the engine is also significantly fewer impurities toxic gases due to improved conditions for the displacement of the burned mixture from the cylinder. The method of transportation of gaseous materials, which consists in forcing gas under pressure into the pipeline and the change in density of the flow of gaseous material through the cross-section of the pipeline at any stage, this creates a reduction in the power consumption from the periphery to the longitudinal axis of the pipe, characterized in that the transportation of gaseous materiau section to create the output pipe section, the pressure on the cut pipe installed below the ambient pressure.
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
FIELD: gas industry.
SUBSTANCE: method comprises separating the mixture into C1 methane fraction with subsequent supply to gas pipeline and C2+ hydrocarbon fraction that are preliminary stabilized by its liquefying by means of preliminary cooling down to a temperature at least 16°C and supplying to the gas pipeline. The pressure is maintained at a level no less than 3,2 MPa.
EFFECT: enhanced reliability of one-phase transporting.
FIELD: oil industry.
SUBSTANCE: supersonic tube comprises Laval nozzle, cyclonic separator with the blade, diffuser for discharging dried gas, and diffuser for discharging condensed liquid. The blade is made of deformed plate set in the screw groove made in the inner side of the cyclonic separator. The length of the plate is at least ½ of the pitch of the screw groove. The housing of the tube of the cyclonic separator receives locking members whose faces enters the screw groove. The distance between the adjacent locking members mounted in the screw groove is equal to the length of the plate.
EFFECT: enhanced efficiency.
FIELD: natural gas industry; other industries; production of the gas pipeline blowoff valves.
SUBSTANCE: the invention is pertaining to natural gas industry and is intended for blowing through of the gas pipelines. The technical result of the invention is the increased efficiency of usage of the gas pipeline blowoff valves at augmentation of the quantity of the delivered for utilization of the waste heavy hydrocarbon fractions of the natural gas for their additional condensation in the area of formation of the microswirlings between the exterior funnel-shaped and interior perforated conical walls. In the gas pipeline blowoff valve in the holes of the perforated conical wall there are the curvilinear grooves, which curvature is directed counterclockwise, and the curvature of the guiding vanes is made in the clockwise direction.
EFFECT: the invention ensures the increased efficiency of usage of the gas pipeline blowoff valves.
FIELD: gas conveyance means, particularly gas-main lines, gathering lines and manifolds of gas fields for condensate recovery.
SUBSTANCE: device to prevent condensate plug forming in pipeline comprises pipeline with inclined sections and connection elbows with enclosing channel. Discharge condensate pipe is formed in lower part of connection elbow. Condensate pipe is located in funnel-shaped enclosing channel and is connected to accumulation vessel located below ground freezing level. Condensate removal pipeline is installed in accumulation vessel so that the condensate removal pipeline is coaxially retained in vertical enclosing channel.
EFFECT: possibility to maintain thermal gas pipeline regime, which prevents condensate freezing, to remove accumulated condensate due to usage of steam condensation heat generated during condensation of steam present in conveying gas flow.