RU2709163C1 - Movable gas-filling machine - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: movable gas tank comprises gas-cylinder plant in the form of three sections with different number of high-pressure cylinders, device for their filling with compressed natural gas pressure of 24.5 MPa, device for gas supply to consumers, which are combined with main and additional pipelines with shutoff-control, control and safety valves with the same throughput capacity for pressure of 24.5 MPa with gas discharge to the plug from safety valves. According to invention, gas tank is equipped with header for gas supply to consumers with control and measurement valves and valve shutoff, connected with pipeline piping sections of cylinders, as well as a collector for gas release to the plug, which is connected to pipelines of safety armature of sections of cylinders, as well as to piping with a shut-off valve from the collector of gas supply to consumers.

EFFECT: disclosed is movable gas tanker.

4 cl, 1 dwg

Description

The claimed invention relates to mobile gas tankers designed for refueling, storage, transportation and delivery of gas for products operating with variable consumption of gas volumes.

Mobile gas tankers are known that contain gas tanks of various capacities for a natural gas pressure of at least 24.5 MPa with filling and dispensing devices for consumers with a pressure of 19.6 MPa mounted on trailers, semi-trailers, trucks (see Semenishchev S.P., Glukhov V.P. Mobile means of supplying CNG. Transport on alternative fuel. International scientific and technical journal No. 4 (28) 2012. P. 66-69); Semenishchev S.P., Kilin P.G. Mobile gas tanker PAGZ 4300-24.5. Alternative fuel vehicles. International scientific and technical journal No. 6 (30) 2012. P. 30-31).

Also known: installation for transportation and storage of gas (RF patent No. 2237584); mobile gas storage module (RF patent No. 2155682); a mobile installation for transporting and storing gas (RF patent No. 2183571); mobile installation for the transportation and storage of gases (RF patent No. 2149776); a mobile gas tanker and a pressure vessel for it (RF patent No. 2177884); mobile gas filling unit (RF patent No. 2208198); mobile gas tanker (RF patent No. 2177884).

The main disadvantage of these mobile gas tankers is that they cannot be used for products operating with variable consumption of gas volumes.

The closest analogue is a mobile gas tank with a gas cylinder installation in the form of three sections of high-pressure cylinders of various capacities, containing a device for filling it with compressed natural gas with a pressure of 24.5 MPa, a device for dispensing gas to consumers, combined by main and additional pipelines with shut-off, control and safety valves with the same flow rate at a pressure of 24.5 MPa (RF patent No. 179903).

The main disadvantage of this mobile gas tanker is that it also cannot be used for products operating with variable consumption of gas volumes.

The technical problem solved by the invention is the expansion of the functionality of the gas tanker.

The solution to the technical problem is achieved by the fact that the mobile gas tanker is equipped with a collector for the delivery of gas to consumers, which is connected by piping to the sections of the cylinders. Taking into account the fact that along with shut-off valves (ball valves), valves with adjustable capacity (needle valves) are installed on the main piping pipelines, it becomes possible to dispense gas to consumers through the manifold from small to very large volumes.

The solution to the technical problem is also achieved by the fact that the mobile gas tanker is equipped with a gas discharge manifold onto a candle, to which piping piping of the safety fittings of the cylinder sections is connected, as well as piping piping with a shut-off valve from the gas supply manifold to consumers. At the same time, it becomes possible, if necessary, to discharge gas onto a candle from the gas supply manifold to consumers.

The presence of a gas distribution manifold for consumers of control and measuring valves and a stopcock (flange valve) for dispensing gas to consumers creates convenience when servicing a mobile gas tanker.

The presence of additional piping for only two sections with the largest number of cylinders, and not three, as in the closest analogue, simplifies the design of a mobile gas tanker.

To ensure a high gas flow rate, the connection of the gas supply manifold to the consumer with a shut-off valve (flange valve) is made with a pipe with a nominal diameter of at least 25 mm.

Exiting the gas discharge manifold onto a candle in the form of a pipe with a nominal diameter of at least 25 mm allows the discharge of large volumes of gas per unit time from the gas system of a mobile gas tanker.

Piping of sections of cylinders with pipes with a nominal diameter of not more than 12 mm facilitates the assembly of a mobile gas tanker while improving its reliability due to better sealing of pipe connections.

A schematic gas diagram of a mobile gas tanker is shown in FIG. 1.

In sections 1, 2, 3, high-pressure cylinders are installed, equipped with cylinder valves. In sections 1 and 2, the number of cylinders is the same and greatest. In section 3, the number of cylinders is two times less than in any of sections 1 and 2.

The cylinders of section 1 are connected by a main piping with a ball valve 4 and a needle valve 5 with a manifold 6, as well as an additional piping with a ball valve 7 with a collector for gas supply to consumers 6.

Cylinders of section 2 are connected by a main piping with a ball valve 8 and a needle valve 9 with a manifold 6, as well as an additional piping with a ball valve 10 with a collector for gas supply to consumers 6.

The cylinders of section 3 are connected by the main piping to a ball valve 11 and a needle valve 12 with a collector for the delivery of gas to consumers 6.

The collector for the delivery of gas to consumers 6 is equipped with control and measuring fittings in the form of a pressure gauge 13 and a pressure gauge valve 14, as well as a flange valve 15.

The gas discharge manifold to the candle 16 is connected to the safety valves 17, 18, 19 of the main piping, as well as a gas supply manifold to consumers with the placement of a ball valve 20 in the piping.

Refueling piping, including the filler neck 21, ball valve 22 and check valve 23, can be connected to any of the piping piping of any section of cylinders.

The piping piping sections of the cylinders 1, 2, 3 are equipped with pressure gauges 24, 25, 26 and gauge valves 27, 28, 29.

The work of a mobile gas tanker is as follows.

Gas filling of gas cylinders to a pressure of 24.5 MPa is performed at an automobile gas-filling compressor station (CNG filling station).

Before filling the cylinders with gas, ball valves 7, 4, 10, 8, 11 of sections 1, 2, 3, needle valves 5, 9, 12 must be open, and ball valves 20, 22, 15 closed.

When refueling, the CNG filling device is connected to the neck of the gas filling station 21, ball valves 22, 7, 4, 10, 8, 11 and needle valves 5, 9, 12 are opened. Pressure gauges 24, 25, 26 of sections 1, 2, 3 are connected, putting pressure gauge valves 27, 28, 29 to the OPEN position. Pressure gauge valves on cylinders should be open.

Fill the cylinders of sections 1, 2, 3 to a pressure of 24.5 MPa, controlling the pressure on manometers 24, 25, 26.

After filling the cylinders with gas to a pressure of 24.5 MPa, ball valves 22, 7, 4, 10, 8, 11 and needle valves 5, 9, 12 are closed.

Disconnect the CNG filling device from the neck of the filling 21.

Gas is dispensed from the gas tank through the gas manifold to consumers 6. Connect the customer’s filling hose to the flange valve 15. Working in a certain sequence with ball valves 7, 4, 10, 8, 11 and needle valves 5, 9, 12, they achieve the required gas flow for the consumer.

If necessary, to release gas from the gas manifold to consumers, close all taps and valves and open the ball valve 20.

The inventive mobile gas tanker is designed and manufactured at LLC NPP GazServisKompozit for one of the enterprises of the Russian Federation. At the enterprise, a mobile gas tanker is used to power a special installation with variable consumption of gas volumes.

Cylinders in a mobile gas tank are installed in a container in an upright position. The container is placed on the platform of a container semi-trailer.

Claims (4)

1. A mobile gas tanker containing a gas-cylinder installation in the form of three sections with a different number of high-pressure cylinders, a device for filling them with compressed natural gas with a pressure of 24.5 MPa, a device for dispensing gas to consumers, combined by main and additional piping with shut-off, control and safety valves with the same flow rate at a pressure of 24.5 MPa with gas discharge to the plug from the safety valves, characterized in that the gas tank is equipped with a collector for gas delivery to consumers with control and measuring fittings and a shut-off valve connected to the piping of the cylinder sections, as well as a manifold for discharge of gas onto the candle, connected to the piping of the safety valves of the cylinder sections, as well as a piping with a shut-off valve from the gas distribution manifold to consumers. 2. The mobile gas tanker according to claim 1, characterized in that the additional piping is made for two sections with the largest number of cylinders. 3. The mobile gas tanker according to claim 1, characterized in that on the main piping piping, in addition to stopcock taps, taps with adjustable capacity are installed. 4. The mobile gas tanker according to claim 1, characterized in that the connection of the gas supply manifold to consumers with a shut-off valve, as well as the outlet from the gas discharge manifold to the plug, are made with pipes with a nominal diameter of at least 25 mm, and piping is made of pipes with a nominal diameter passage no more than 12 mm.

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