Device for motor vehicles with compressed natural gas

 

(57) Abstract:

Usage: in the engine, in particular automobile gas-filling compressor stations. The inventive device includes a pressure regulator gas cylinder pulsed gas made in the form of cutter, throttle washer, water line, three-way ball valves provide compressed natural gas from a source to gazobetona installation vehicles. The gas pressure regulator with pulsed gas cylinders and throttle washer provides cutting off the supply of compressed natural gas in gazobetona the installation of the car when the pressure therein to a specified value. The economic effect from the use of this device is provided for reducing the time of refueling vehicles with compressed natural gas to a specified pressure and as a consequence improve the capacity CNG stations. 2 Il.

The invention relates to techniques for fueling CNG vehicles with compressed natural gas as a motor fuel and can be used in automobile gas-filling compressor stations (AGFCS).

A device for napravlennuyu system. When it is used for refueling vehicles with compressed natural gas, increase gas pressure in the gas installation, car lock elements of the device gradually close the hole.

It is also known device for motor vehicles with compressed natural gas containing cylindrical body, in the cavity of which is placed a rod with through channels, and a hollow handle provided with a source of compressed gas in the cavity hosting the site cut-off compressed gas and spring system.

A disadvantage of the known devices is a great time of refueling vehicles with compressed natural gas to a specified pressure, as in the subcritical after the gas in the gas installation hire outlet gradually closes and the node cutoff does not provide a cut-off of gas supply to CNG installation car when reaching into her predetermined pressure, shut-off site works only if you try to discharge compressed gas from a compressed gas source into the atmosphere through the device.

The closest in technical essence and the achieved result is selected as a prototype device for motor vehicles with compressed PR is a Source of compressed gas consists of a gas, the inlet of which is connected to the gas network under the pressure of 0.6-1.2 MPa, and the output of the block liquefaction and gas cooling. The output unit condensing and cooling the gas connected to the inlet of drying gas, the output of which is connected to the block inlet gas storage (batteries, gas). The reduction unit and the distribution is connected with the first inputs of three-way ball valves, the second inputs of which are connected with a candle. The inputs of the three-way ball valves connected to the filling heads.

A disadvantage of the known device is a great time of refueling vehicles with compressed natural gas to a specified pressure, as in the subcritical after the gas in the gas installation hire locking elements pressure regulator gradually close the outlet and as a consequence increases the time of refueling, thus decreasing the throughput CNG.

The aim of the invention is to reduce the time of refueling CNG vehicles to a specified pressure compressed natural gas.

This objective is achieved in that in the known device for motor vehicles with compressed natural gas containing a source of compressed gas, a pressure regulator is on the candle, the source of compressed gas connected to the inlet of the pressure regulator, and the sleeve is connected to the output of the pressure regulator through a three-way with the gas pressure regulator is made in the form of a clipper comprising a housing, inside which a cylindrical channel placed the ball and two pistons connected together rigidly and dividing the inner space of the housing into three cavities, the first cavity is connected to the first input of back pressure through the pipe line with pulsed gas cylinder with a first relief valve, and the input of the third three-way ball valve, the first outlet of the second three-way ball valve, the entrance through which the pipeline is connected to a source of compressed gas, the second output of the second three-way ball valve connected with the second cavity of the pressure regulator through the main entrance, the controller output pressure is connected via piping to the first output of the third three-way ball valve and the inlet orifice plates, the second output of the third three-way ball valve connected to the spark plug, the outlet orifice plates connected to the second output of the first three-way ball valve, the first output of which is connected to the spark plug, the input perwakilan and filling the sleeve with a petrol head, the outputs of the first and second safety valves is connected through a pipe line with a candle.

Comparative analysis of the prototype shows that the proposed device for motor vehicles with compressed natural gas has a new pressure regulator gas cylinder pulse gas, throttle washer, second and third three-way ball valves and their connections with other elements of the device.

Thus, the device for motor vehicles with compressed natural gas meets the criteria of the invention of "novelty."

The applicant is unknown technical solution, where the distinguishing characteristics of the proposed device appeared in exactly as proposed. Therefore, the claimed technical solution meets the criterion of "substantial differences".

In Fig. 1 shows a process diagram of the device of Fig.2 possible directions of gas flow in a three-way ball valve.

The device includes a source of compressed gas connected with a pressure gauge 2 and the input of the second three-way ball valve 3 (Fig.2). The first output of the second three-way ball valve 3 is connected to the pulsed gas cylinder 4 provided with manomet the holding case 7 with the main entrance 8, the first sign of back 9, the second input pressure 10 and outlet 11. Inside the housing 7 in the cylindrical channel of the first piston 12, provided with a sealing ring 13 and the first thrust protrusion 14 and the second piston 15, provided with a sealing ring 16 and the second thrust ledge 17. The first and second pistons 12 and 15 are connected by axle 18, divide the cylindrical channel of the housing 7 on the first 19, the second 20 and third cavity 21. The second cavity 20 between the first limiting protrusion 22 and the second limiting protrusion 23 posted by the ball 24. The first cavity 19 through the first entrance backpressure 9 is connected to the first output of the second three-way ball valve 3, the pulsed gas cylinder 4, the input of the first safety valve 25 and the input of the third three-way ball valve 26. The output of the first safety valve 25 and the first output of the third three-way ball valve 26 is connected to the spark plug 27. The second output of the third three-way ball valve 26 is connected to the output 11 of the gas pressure regulator 6, the entrance orifice plates 28, the output of which is connected with the second output of the first three-way ball valve 29. The first output of the first three-way ball valve 29 and the output of the second safety to the enforcement of the valve 30, the second input pressure 10 gas pressure regulator 6, a pressure gauge 31, the filling sleeve 32 and through it with the filling head 33.

To ensure the free outflow of gas in the second cavity 20 and to the liberation of the outlet 11 from the bead 24 of the first limiting protrusion 22 pushed the ball 24 in the center, its height is chosen so that the distance between the first limiting protrusion 22 and the inner surface of the cylindrical channel was not less than 2 and not more than d/2-, where d, d1and d2accordingly, the diameters of the cylindrical channel of the housing 7, the ball 24 and exit 11. The height of the second restrictive projection 23 is chosen so that the distance between it and the inner surface of the cylindrical channel of the housing 7 was less than d1but not more than the height of the first limiting protrusion 22. The length of the first and second thrust lugs 14 and 17 and the location of the main entrance 8, the first and second input back pressures 9, 10 and outlet 11 is chosen so that when the pistons 12 and 15 in position, when the first thrust ledge 14 or the second thrust ledge 17 abuts against the end face of the cylindrical channel of the housing 7 of the second piston 15 is positioned between the main inlet 8 and the 1. The distance between the first limiting protrusion 22 and the second limiting protrusion 23 and the locations are chosen so that when the first and second piston 12 and 15 in position, when the second thrust ledge 17 abuts against the end face of the cylindrical channel of the housing 7, they were between the main inlet 8 and outlet 11, and when the first and second piston 12 and 15 in position, when the first thrust protrusion abuts against the end face of the cylindrical channel of the housing 7, the first thrust protrusion 22 is positioned between the first inlet pressure 9 and the outlet 11, the second restrictive projection 23 is positioned between the outlet 11 and the input 8 and the distance from the first and second restraining protrusions 22 and 23 to exit 11 were not less than d21-d22/2.

To ensure that the point touches the end face of the cylindrical channel of the housing 7 and the thrust lugs 14 and 17, the ends of the thrust lugs perform in a spherical form.

The device at refueling of vehicles with compressed natural gas to a pressure P1smaller gas pressure in the compressed gas source R2works as follows.

Natural gas from a compressed gas source 1 pressure P2comes in the second three-way ball is as long until the gas pressure therein becomes equal to R1. Because the pulsed gas cylinder 4 and the first cavity 19 of the gas pressure regulator are connected, the gas pressure in the first cavity 19 is equal to R1and the pistons 12 and 15 are in position, when the second thrust ledge 17 abuts against the end of the body, since the gas pressure in the third cavity 21 is equal to the atmospheric pressure. After the gas pressure in the cylinder pulse gas 4 becomes equal to R1compressed gas under pressure P2using the second three-way ball valve 3 serves the second cavity 20 of the gas pressure regulator 6. At this time, the third three-way ball valve 26 and the first three-way ball valve 29 must be in the closed (neutral) position. The device is ready for filling CNG vehicles with compressed natural gas, the gas pressure regulator (web clipper) 6 ready to cut off the supply of compressed gas in the gas installation of the vehicle when the gas pressure therein is equal to R1. Further to control the fueling of vehicles with compressed natural gas to a pressure P1only uses the first three-way ball valve 29. CNG car installation using the filling sleeve 32 with Spravochnoe car. Using the first three-way ball valve 29 compressed gas through the pressure regulator 6 and through the throttle washer 28 serves in the car. Originally throttle washer is chosen such that when the supercritical outflow of gas in the gas installation hire the pressure of gas in the pipeline after the orifice plates 28 was somewhat lower R1. Then in the third cavity 21 of the gas pressure regulator 6, the pressure will be lower when the supercritical gas outflow, and the first and second pistons 12 and 15 are in position, when the second thrust lug 17 will abut the end of the housing 7. The outflow of gas in the gas installation vehicles will be supercritical, until the gas pressure therein to rise to values

Pkr= P where k is the adiabatic exponent of filled gas (k 1,31 for methane). With further increase in gas pressure in the gas installation car outflow of gas from the supercritical goes on sub-critical flux and the gas pressure in the gas installation of the car and in the third cavity 21 of the gas pressure regulator 6 are aligned. Subsequent filling of CNG installation of car leads to the same increase of the pressure in the third cavity 21 of the regulator Yes is more R1then in the third cavity 21 of the pressure regulator 6, the gas pressure becomes greater than the P1and the first and second pistons 12 and 15 go toward the first sign of back 9, as it does not lead to a noticeable increase of gas pressure in the first cavity 19 of the gas pressure regulator 6 for the reason that the first cavity 19 is connected to the pulsed gas cylinder 4 and the total geometric volume of a cylinder pulse gas and the first cavity 19 with the departure of the piston toward the first sign of back 9 is reduced slightly. With the departure of the pistons 12 and 15 in the direction of the first input backpressure 9 increases the geometric volume of the third cavity 21 of the pressure regulator 6. This does not lead to a noticeable drop in gas pressure in the third cavity 21, as it is connected with the gas installation hire and the total geometric volume of the gas installation of the car and the third cavity 21 with the departure of the piston toward the first inlet of the back pressure increases slightly. With the departure of the pistons 12 and 15 toward the first sign of back 9 first the protruding lip 22 prevents the flow of gas took the ball and locked out 11 as the second restrictive projection 23 provides that the annual ball valve 29 is installed in a closed (neutral) position, close the gas valve installation of the car, using the first three-way ball valve 29 dumped the remaining compressed gas from the filling sleeve 32 and the third cavity 21 of the gas pressure regulator 6 to the ignition plug 27, disconnect the filling head 33 from the gas installation of the car. So how was the discharge of gas from the third cavity 21 of the gas pressure regulator 6 pistons 12 and 15 go in the direction of the second input pressure 10, releasing the first limiting protrusion 22 output 11 from the bulb 24. Device for motor vehicles with compressed natural gas ready for filling next to the pressure P1.

Preregulator device for motor vehicles with compressed natural gas to a pressure P3(R3P1using the second and third three-way ball valve 3 and 26. If R3< P1then from the pulsed gas cylinder 4 through the third three-way ball valve 26 and the gas discharge candle on 27 up until the gas pressure therein drops to P3. If P3> R1then using the second three-way ball valve 3 or the third three-way ball valve 26, the compressed gas is fed into the cylinder of a pulsed gas 4 up until tableservice LPG installation car to a pressure P3.

Reducing the time of refueling vehicles with compressed natural gas is achieved by the fact that at subcritical after the gas in the gas installation hire communicating sections of the device for motor vehicles with compressed natural gas do not change and remain the same as in the supercritical gas outflow.

Economic efficiency from the use of this device is provided for reducing the time of refueling vehicles with compressed natural gas to a specified pressure and as a consequence improve the capacity CNG stations.

DEVICE FOR motor VEHICLES with COMPRESSED NATURAL GAS containing a source of compressed gas, a gas pressure regulator with inlet and outlet, pipe line gas, gas hose, gas cylinder, piping discharge gas at a candle, three-way ball valve, and a compressed gas source in communication with the inlet of the pressure regulator, and the sleeve is in communication with the outlet of the pressure regulator through a three-way ball valve, characterized in that it is provided with a cylinder, throttle washer with the inlet and outlet, the first and second safety valves with the corresponding outputs of the second and dim channel, the first sign of pressure, the ball, the two pistons are rigidly interconnected, with the ball and two piston housed in a cylindrical passage in the housing with the formation of three cavities, the first cavity is communicated to the first input of the back pressure through the pipe line with the cylinder and with the first relief valve, and the input of the third three-way ball valve and the first outlet of the second three-way ball valve, the inlet of which through the pipe line in communication with the source of compressed gas, the second output of the second three-way ball valve communicated with the second cavity of the pressure regulator through the entrance, the controller output pressure through the pipe line in communication with the first output of the third three-way ball valve and the inlet orifice plates, the second output of the third three-way ball valve communicated with a candle, exit orifice plates communicated with the second output of the first three-way ball valve, the first output of which is communicated with a candle, input the first three-way ball valve is in communication with the third cavity of the pressure regulator, the second relief valve and filling hose with filling head, the outputs of the first and second safety valves reported

 

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