RU2374554C1 - Gas accumulating compressing system for vehicle balons filling up with compresed natural gas - Google Patents

Abstract

FIELD: oil-and-gas production.

SUBSTANCE: gas accumulation compressing system includes gas extraction from gas main pipeline device, compressing system, located in a process room, gas accumulating storage, execute as a flowing pipeline connected to compressing system and gas distribution column. Flowing pipeline operates with working pressure greater than 25 MPa, diametre 100 mm and volume, containing not less then compressing system half-daily output, also gas accumulation compressing system equipped with additional gas distribution columns, connected via flow pipeline and located near by process room as well as near by motorways and places of vehicles location.

EFFECT: investment costs cutting, operation costs cutting, construction acceleration and working personnel reduction.

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Description

The invention relates to the field of gas supply to vehicles using compressed natural gas as a motor fuel.

The closest technical solution to the claimed device is a gas-filling compressor station for refueling vehicles with compressed natural gas, including a gas sampling device from the main gas pipeline, a compressor installed in the production room, and a gas storage battery in communication with the compressor and the gas dispenser mounted under canopy, while the gas accumulator is made of a flow line in the form of a coil placed on the roof the main room and / or on the roof of the canopy, connected to the compressor and the dispensing column and equipped with shut-off devices at the initial and final sections, which prevent leakage of gas into the coil when the volume exceeds the total volume of gas cylinders of the most loaded vehicle and the length of the flow pipe more than an order of magnitude greater than the total length of the vehicle’s cylinders [RF Patent No. 2208200, priority 2002.09.10].

The coil coil made of the pipeline is not subject to re-examination, since it is essentially a flowing gas pipeline with an accumulating function, and not a battery product in the traditional sense. This gives reason to reduce the safety zone of the station and, therefore, reduce the size of the land allocated for the construction.

A disadvantage of the known device is its limited gas content. Essentially, such batteries act as compensators for the pulsating gas flow coming from the compressors, and are capable of independently supplying only a few cars with gas (when the compressors are stopped).

Another equally important drawback of such stations is the overstated, almost 2 times, productivity and power of their compressor units. This is explained by the different demand for gas by automobiles for day shifts and the insignificant amount of batteries that are unable to accommodate the gas supplied by the compressors if they work around the clock and there is no request from the automobiles.

These shortcomings lead to an increase in the installed capacity of compressors, the cost of stations, the timing of their construction and operating costs.

The technical problem posed in the present invention is to increase the gas capacity of the battery for storing gas, made in the form of a flow pipe, which allows for continuous operation of the compressors of the station.

The problem is solved by the fact that in the proposed gas-filling compressor system for filling vehicle cylinders with compressed natural gas, including a gas sampling device from the main gas pipeline, a compressor unit located in the production room, a gas storage battery in communication with the compressor unit and the gas dispenser and made in in the form of a flow pipe, according to the invention, the flow pipe is made at a working pressure of more than 25 MPa, diameter ohm no more than 100 mm and a volume accommodating at least half the daily capacity of the compressor installation, while the gas-filling compressor system is equipped with additional gas dispensers connected by a flow pipe and located both near the production room and outside it in close proximity to roads and transportation locations funds.

Based on the fact that traditional stations, when designed by cars, operate on a daily basis for no more than 12 hours due to the “torn mode”, the gas capacity of the battery at maximum gas pressure should be at least half of the round-the-clock capacity of compressor units.

Calculations show that such a high-pressure accumulator (more than 25 MPa) to ensure the necessary safety should be made in the form of a flow pipe of small diameter (up to 100 mm) and considerable length, that is, many kilometers long and, therefore, taken out of the station together with gas dispensers , which are practically advisable to place mainly along highways, especially intercity, and in close proximity to the locations of vehicles.

The drawing as one of the options shows a diagram of the proposed gas-filling compressor system of intercity type.

The gas-filling compressor system includes a gas supply pipe 1, compressor units 2 located in the production room 3, and a gas storage battery 4, made in the form of a flow pipe and in communication with the compressor units 2 and gas distribution columns 5.

If the flow pipe is made open, then it is equipped in the initial and final sections with cut-off devices 6 and 7, which prevent gas leakage. The flow line and gas dispensers 5 are located outside the territory of the production building in close proximity to the highway and the locations of vehicles. One or more gas dispensers can be located on or near the premises. Gas dispensers 5 are connected by power and communication lines (not shown conditionally) with an operator room (not shown conditionally) located on the premises of the production building 3.

The device according to the invention operates as follows.

Natural gas enters through the gas supply line 1 to the compressor units 2 located in the production room 3.

Compressed gas in compressor units 2 with a pressure of more than 25 MPa enters the gas storage battery 4, made in the form of a flow line and communicated with gas dispensers 5, and of these, into automobile cylinders. The process of refueling vehicles, maintaining records of the gas it has dispensed, and commercial settlements with gas consumers is controlled in the operator's room through power and communication lines.

For clarity, we give an example of the effectiveness of building the proposed system between cities distant from each other at a distance of 150 km, if necessary, providing daily refueling of 1000 powerful trailers and buses with a refueling volume of 170 km ^{3 of} gas and a step between gas dispensers of 10 km. Pre-design studies and calculations of such a system showed that in comparison with the construction of several individual stations of a traditional type, the cost is reduced by at least 3 times, construction time by 2 times, the number of maintenance personnel by 10 times, the size of land allocated for construction by 5 times, operating costs no less than 3 times.

The technology for the production and refueling of automobile and other vehicle cylinders with compressed natural gas at the proposed station from the use of a long connecting gas pipeline with gas capacity sufficient to refuel the design number of cars during the day has not changed and has remained virtually traditional.

Claims (1)

Gas-filling compressor system for filling cylinders of vehicles with compressed natural gas, including a gas sampling device from the main gas pipeline, a compressor unit located in the production room, a gas storage battery made in the form of a flow pipe connected to the compressor unit and a gas dispenser, characterized in that the flow line is made for a working pressure of more than 25 MPa, with a diameter of not more than 100 mm and a volume containing at least half guilt daily performance compressor unit, with the gas-filling compressor system features additional gazorazdatochnymi columns connected in flow conduits and arranged as close to the production area, and outside of it in close proximity to roads and places based vehicles.

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