RU2714970C1 - SET OF GAS-USING EQUIPMENT FOR BelAZ-7540a DUMP TRUCK - Google Patents

Abstract

FIELD: machine building; transport.

SUBSTANCE: invention relates to transport machine building and can be used for mounting on BelAZ-7540A dump truck for its operation on mixture of diesel and gas fuel at maintaining engine operation on standard diesel fuel. Set of gas-consuming equipment for BelAZ-7540A dumper comprises tank (1) for liquefied natural gas (LNG tank), subframe (2) of LNG tank, box (7) of control system for supply of gas fuel, cowl (3), battery protection box (4), air pipe (5), pipelines assembly (6), control panel (8), power supply unit (9), flexible pipelines (10, 11, 13, 14), rigid pipelines (16), and Also, brackets for attachment of exhaust pipe and brackets for protection of outlet pipe.

EFFECT: disclosed is set of gas-using equipment for BelAZ-7540a dump truck.

7 cl, 12 dwg

Description

The invention relates to a transport mechanical engineering and can be used for mounting on a BelAZ-7540A dump truck to operate it on a mixture of diesel and gas fuels while maintaining the possibility of the engine functioning on regular diesel fuel.

A car chassis with a gas engine is known, for KamAZ vehicles, containing a hinged cab, under which the engine is placed, a frame made of side members and cross members, an air intake and an air cleaner mounted on the cab at the rear, a battery box mounted on the frame to the left behind the front axle, receivers, two of which are fixed under the battery box, a muffler with an exhaust pipe, a transfer case installed in the middle of the frame, while a gas engine is located under the cab different fuels, a cassette with vertically arranged gas cylinders is installed in the rear of the cab over the frame spars, and cartridges with horizontally located gas cylinders are installed between the front and middle axles on the left and right, in addition, inside the frame on the rear overhang, to the right and left and in the middle zone on the left the spar is fixed one receiver at a time, and the muffler is installed horizontally in the middle part, to the right under the frame and its exhaust pipe extends to the right between the middle and rear axles (RU 103331 U1, 10/04/2011).

A disadvantage of the known equipment is the use of gas fuel in the form of compressed gas, which requires a large volume to accommodate gas cylinders.

A gas-fueled KamAZ gas-powered dump truck is known in which a liquefied natural gas cylinder is mounted on a lodgement for a standard fuel tank, components of the gas supply system to the engine are fixed to the frame behind the cab (see KAMAZ on liquid methane: all details. Page in Internet https://avtospravochnaya.com/avtomobili/7001, publ. 05.24.2017).

This solution assumes that the engine runs only on gas fuel and does not allow the engine to run on a mixture of diesel and gas fuels.

Closest to the proposed equipment is a set of gas-powered equipment of a truck, containing a liquefied gas tank, a liquid pipeline, a gas supply control unit and a gas pipeline, while the liquefied gas tank is installed on one side of the lower part of the vehicle frame, and the gas supply control unit is on the other side of the lower part of the car frame (CN 202528841 U, 11/14/2012).

The technical problem solved by the invention is to create a set of gas-using equipment (KGO), which makes it possible to install it on a BelAZ-7540A dump truck to operate the equipment on a mixture of diesel and gas fuels when using liquefied natural gas as gas fuel.

The technical problem is solved by a set of gas-using equipment for the BelAZ-7540A dump truck containing a tank for liquefied natural gas (LPG tank), an LNG tank subframe, a gas fuel supply control system box, a hood, a battery protection box, an air pipe, a piping assembly, a control panel, a unit power supplies, flexible pipes, rigid pipes, exhaust pipe mounting brackets and exhaust pipe protection brackets.

In a preferred embodiment, the subframe of the LNG tank is made in the form of a frame on which two consoles are fixed, means for fastening the LNG tank are installed on each console and in the middle part of the frame, and reciprocal openings are made on the casing of the LNG tank to accommodate elements of fastening means.

In addition, the LNG tank includes a housing in which the LNG vessel, valves, apparatuses and devices of the gas supply system are located, as well as quick-connect fittings for connecting gas line equipment to the pipelines, a filling nozzle and an electrical connector for the level indication circuit.

In addition, the hood and battery protection box are sized to allow the battery protection box to be placed on the deck of the truck.

In addition, the air pipe includes two curved nozzles made with the possibility of their connection by a regular connecting sleeve.

In addition, the pipeline assembly includes a housing in which the fittings for connecting the pipelines of the gas-using equipment system are located, as well as the pressure gauge in the natural gas delivery system, a relief valve and a connector for connecting the signal cable of the liquefied natural gas level in the LNG tank.

In addition, the box of the gas fuel supply control system includes a housing in which the gas supply control controller, gas pressure and temperature sensors, gas pressure regulator, gas meter with solenoid valves, gas filter, methane leakage sensor are located.

The invention is illustrated by drawings.

In FIG. Figure 1 shows the layout of the components of the CSF on the truck.

In FIG. 2 - subframe of the LNG tank and the LNG tank mounted on it.

In FIG. 3 - subframe of the LNG tank with the LNG tank attached to it.

In FIG. 4 - twistlock on the console of the subframe of the LNG tank.

In FIG. 5 - a fragment of the LNG tank with a response window.

In FIG. 6 - location of the hood and battery box.

In FIG. 7 - the location of the air pipe.

In FIG. 8 - piping assembly.

In FIG. 9 - KGO box.

In FIG. 10 - location on the frame of a rigid pipeline.

In FIG. 11 - location on the frame of the mounting brackets of the exhaust pipe.

In FIG. 12 - location on the frame of the brackets of protection of the exhaust pipe.

The diagram (Fig. 1) shows a tank 1 with liquefied natural gas (LNG tank), a subframe 2 of an LNG tank, a hood 3, a battery protection box 4 (battery box), an air pipe 5, a piping assembly 6, a box 7 for a gas supply control system fuel (KGO box), control panel 8, power supply unit 9, flexible pipelines 10 with quick disconnect connections (BRS), flexible pipe 11 for supplying gas fuel to the engine, harness 12 electric wires, flexible pipe 13 for supplying coolant, flexible pipe 14 for returning coolant, point 15 ground connections, hard 16 oprovod gas discharge.

Due to the fact that the serial dump truck does not have allocated places for placing KGO units, the dump truck must be prepared before installation.

To place the tank 1 LNG dismantle the regular battery box and box brackets. The subframe 2 of the LNG tank is mounted on the truck frame on the right side by means of the adapter plate 17 (Fig. 2, 11, 12). The subframe 2 of the LNG tank (Fig. 2) for fixing on the truck frame is made in the form of a bracket, which includes a frame 18, on which two consoles 19 are fixed (“legs”). On each console 19 and between them, in the middle part of the frame 18, means for fastening the LNG tank 1 are installed, preferably in the form of locking devices - twist blocks 20 (Fig. 4). On the casing of the LNG tank 1, mating holes 21 are made for accommodating the conical heads 22 of the twist blocks 20 in them (Fig. 5). When installing the LNG tank 1, the forklift forks are inserted into the guides in the lower part of the tank 1 body until they stop in the stops, raise the forks to the required height, bring the LNG tank 1 to the dump truck, lower the LNG tank 1 down to align the guides with the counterpart of the subframe 2. When lowering the LNG tank 1, the mating holes 21 of the LNG tank 1 body and the conical heads 22 of the twistlocks are combined 20. The screw clamps 23 of the twistlocks 20 are fixed. The subframe 2 is designed to quickly install the LNG tank 1 on the dump truck and quickly remove it. Performing multiple removal / installation operations of the LNG tank 1 on the truck frame in the case, for example, of scheduled maintenance in rooms (garages) not intended for the presence of equipment with gas fuel. If the LNG tank is removed, it can be stored at a special site.

LNG tank 1 includes a housing in which the LNG vessel, valves, apparatuses and devices of the gas supply system are located, as well as quick disconnect fittings (BRS) (not shown in the drawings) for connecting lines of the gas-using equipment system to flexible pipelines 10 (Fig. 1) : gas discharge lines, lines for issuing natural gas to the system, coolant supply and return lines, as well as an electrical connector for the tank fill level indication circuit and a fuel nozzle.

The hood 3 (Fig. 1, 6) is installed in place of the regular side hood of the dump truck above the engine. The space for placing the battery box 4 is freed up, since the dimensions of the modified hood 3 are smaller than the sizes of the regular hood. Battery box 4 (Fig. 6) is mounted on the deck to the right of the cabin. The design of the modified battery box 4 allows personnel to walk on, stepping on top of the closed box lid 4. In the box 4, a standard battery (four pieces), a standard charge socket and a standard mass breaker are installed.

Dismantle the standard air supply pipe to the left air filter 24 to free up space for the placement of the KGO box 7 (Fig. 7). Mount a modified air pipe 5, consisting of two curved nozzles 25 and 26, connected and connected by regular connecting sleeves. The curved shape of the air pipe allows you to place the box 7 KGO on the rear wall of the cabin 27.

The node 6 pipelines (Fig. 1, 8) includes fittings 28 for connecting the pipelines 10, 11, 13, 14 of the gas-using equipment system, as well as a pressure gauge 29 in the natural gas delivery system, a relief valve, and a level signal cable connector 30 LNG in the tank 1. For mounting the node 6 pipelines previously dismantled the standard lodgment fastening the air filter housing, right side. In place of two lodgements, a node of 6 pipelines is mounted. On the upper part of the body of the node 6 pipelines on lodges 31 mount a regular housing of the air filter 24 (Fig. 1).

On the rear wall of the cab 27, on the outside of the bracket 32, a KGO box 7 is mounted (Figs. 1, 7, 9). The side walls of the box 7 have a trapezoidal shape, so that it is narrowed at the top and widened at the bottom, which allows you to use the space between the cab 27 and the inclined wall of the body 33. In the box 7 KGO are the main components for controlling the supply of gas fuel to the engine: gas system control controller, gas pressure and temperature sensors, gas pressure regulator, gas meter with solenoid valves, gas filter, methane leak sensor.

A rigid gas discharge pipe 16 is mounted on the dump truck frame 34 (Fig. 10), which is connected to the piping assembly 6. Mount flexible pipes 10, 11, 13, 14 (Fig. 1). Mount the converters (sensors) on the engine: a frequency converter, exhaust gas temperature converters (four), a gas pedal position converter.

The standard outlet pipe mounting bracket 35 on the right side of the frame 34 is replaced by two modified exhaust pipe mounting brackets 36, 37 (Fig. 11).

After mounting the subframe 2 of the LNG tank, two brackets 38, 39 of the exhaust pipe protection 35 with protective shields, which are also part of the KGO, are mounted on the frame 34 of the dump truck (Fig. 12).

The KGO control panel 8 is installed in the upper part of the operator’s cabin 27 on the right wall. The power unit 9, designed to convert the onboard voltage of the truck to a voltage of 24 V, is installed in the upper part of the operator's cab 27 on the rear wall (Fig. 1). Connect them with each other and with a box of 7 KGO electric wires.

The nodes and elements of the natural gas supply system and the natural gas supply control system, known from the prior art, in particular from patent RU 154478 U1, are located in the LNG tank 1 and the KGO box 7.

Drawing Items

1 - LNG tank

2 - subframe of the LNG tank

3 - hood

4 - battery box

5 - air pipe

6 - piping assembly

7 - KGO box

8 - control panel

9 - power supply

10, 11, 13, 14 - flexible pipelines

12 - wiring harness

15 - ground connection point

16 - hard pipe

17 - adapter plate

18 - LNG tank subframe frame

19 - LNG tank subframe console

20 - fasteners - twistlocks

21 - mating holes on the LNG tank

22 - conical twistlock head

23 - twistlock screw clamp

24 - air filter

25, 26 - air pipe nozzles

27 - dump truck cab

28 - fittings node piping

29 - pressure gauge

30 - cable connection connector

31 - lodgment for the air filter

32 - KGO drawer mounting bracket

33 - dump truck body

34 - dump truck frame

35 - exhaust pipe of the truck

36, 37 - exhaust pipe mounting brackets

38, 39 - exhaust pipe protection brackets.

Claims (7)

1. A set of gas-using equipment for the BelAZ-7540A dump truck, containing a tank for liquefied natural gas (LNG tank), a subframe of the LNG tank, a box for a gas fuel supply control system, a hood, a battery protection box, an air pipe, a piping assembly, a control panel, a power supply , flexible piping, rigid piping, exhaust pipe mounting brackets and exhaust pipe protection brackets. 2. The kit according to claim 1, in which the subframe of the LNG tank is made in the form of a frame on which two consoles are fixed, means for fastening the LNG tank are installed on each console and in the middle part of the frame, and reciprocal openings are made on the body of the LNG tank for placement in them elements of fasteners. 3. The kit according to claim 1, in which the LNG tank includes a housing in which the LNG vessel, valves, apparatuses and devices of the gas supply system are located, as well as fittings for quick couplings for connection to the pipelines of the lines of the gas-using equipment system, a filling fitting and an electrical connector for the indication circuit level. 4. The kit according to claim 1, in which the hood and the battery protection box are dimensioned to allow placement of the battery protection box on the deck of the dump truck. 5. The kit according to claim 1, in which the air pipe includes two curved nozzles made with the possibility of their connection by a regular connecting sleeve. 6. The kit according to claim 1, in which the piping assembly includes a housing in which fittings for connecting pipelines of the gas-using equipment system are located, as well as a pressure gauge in the natural gas delivery system, a safety relief valve, and a liquefied natural gas level signal cable connection connector in the tank LNG 7. The kit according to claim 1, in which the box of the gas fuel supply control system includes a housing in which the gas supply control controller, gas pressure and temperature sensors, a gas pressure regulator, a gas meter with solenoid valves, a gas filter, a methane leak sensor are located.

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