Double-bottle or multi-bottle LNG (Liquefied Natural Gas) heavy truck with gas use reminding function

Abstract

The utility model relates to the technical field of liquefied natural gas supply of heavy commercial vehicles, in particular to a double-cylinder or multi-cylinder LNG (liquefied natural gas) heavy truck with a gas use reminding function, which comprises a liquid level transmitter and at least two gas cylinders, gas cylinder liquid level meters are mounted in the gas cylinders, and the gas cylinder liquid level meters are connected with the same liquid level transmitter through data cables; according to the double-bottle or multi-bottle LNG heavy truck with the gas consumption reminding function, the liquid level transmitter transmits liquid level data monitored in real time to the combination instrument, a judgment program is set in the control unit in the combination instrument, when the liquid level value is abnormal, a warning buzzer on the truck gives out a warning for gas consumption reminding, and the gas consumption reminding function is achieved. The potential misoperation risk is avoided, the driving safety is improved, and the vehicle operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied natural gas supply for heavy commercial vehicles, in particular to a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function. Background Art

[0002] LNG heavy trucks are widely welcomed in the domestic heavy truck market due to their excellent driving range and lower operating costs. Since the temperature and pressure indicators of LNG supplied in the domestic market vary, and high-power gas engines have high requirements for the supply pressure and supply flow of the on-board supply system, the current domestic on-board LNG supply system generally adopts a self-pressurization solution. Due to the limitations of vehicle layout and the user's need for large volume and long duration, dual or multi-cylinder solutions are often used in some models. In order to simplify the structure and reduce costs, each cylinder usually shares a self-pressurization system, and the source of the pressurized liquid is only one of the cylinders.

[0003] In practice, it is found that the existing technology has the following shortcomings: when the user fails to operate according to the instructions and uses up the fuel in the gas cylinder where the pressurized liquid is discharged first, the LNG fuel in other gas cylinders will cause abnormal discharge because the pressurization system cannot work normally. At this time, because the total gas volume displayed on the instrument is not 0, the vehicle fails to issue a fuel shortage reminder in time, but at this time the LNG supply system can no longer continue to provide a stable fuel supply to the engine, and there is a great safety risk when driving at high speed. The vehicle stops halfway and cannot continue to drive, and professional rescue services must be requested, which affects the vehicle's operating efficiency.

[0004] For the above reasons, in order to solve the above technical problems, it is necessary to design a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function to overcome the problem of abnormal liquid discharge caused by the failure of the boosting system to work properly in the existing LNG supply system. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function, which can promptly remind the driver through the combined instrument assembly to avoid potential risks of misoperation.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function, including a liquid level transmitter and a gas cylinder, at least two of the gas cylinders are provided, and a gas cylinder liquid level gauge is installed in the gas cylinder, and the gas cylinder liquid level gauge is connected to the same liquid level transmitter through a data cable.

[0007] Preferably, the liquid level transmitter is connected to the instrument cluster assembly via a data cable.

[0008] Preferably, a control module of the instrument cluster assembly is provided with a gas cylinder remaining quantity determination and alarm unit, and the instrument cluster assembly collects a liquid level signal from a liquid level transmitter.

[0009] Preferably, a valve is installed on the gas pipeline of the gas cylinder, and the electric control switch of the valve is installed in the cab.

[0010] Preferably, when there are two or more gas cylinders, one gas cylinder is set as the main gas cylinder in the liquid level transmitter.

[0011] The utility model has the following beneficial effects:

[0012] The utility model is designed with a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function. The liquid level transmitter transmits the real-time monitored liquid level data to the combination instrument, and a determination program is set in the control unit in the combination instrument. When the liquid level value is abnormal, a gas usage reminder alarm is issued through the warning buzzer on the vehicle, thereby avoiding potential risks of misoperation, improving driving safety, and improving vehicle operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function.

[0014] In the figure: 1- instrument combination assembly; 2- level transmitter; 3- “No. Ⅰ” gas cylinder, 3.1- “No. Ⅰ” gas cylinder level gauge; 4- “No. Ⅱ” gas cylinder, 4.1- “No. Ⅱ” gas cylinder level gauge. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely further describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Embodiment 1.

[0017] like Figure 1 As shown, a double-bottle or multi-bottle LNG heavy truck with a gas usage reminder function includes a combination instrument assembly 1, a liquid level transmitter 2 and a gas cylinder. There are two gas cylinders, including a "No. I" gas cylinder 3 and a "No. II" gas cylinder 4. Gas cylinder liquid level gauges are installed in the gas cylinders. The "No. I" gas cylinder 3 is installed with the "No. I" gas cylinder liquid level gauge 3.1, and the "No. II" gas cylinder 4 is installed with the "No. II" gas cylinder liquid level gauge 4.1, which can measure the LNG remaining amount of the two gas cylinders respectively.

[0018] The gas cylinder level gauge is connected to the same level transmitter 2 through a data cable. A valve is installed on the gas pipeline of the gas cylinder, and the electric control switch of the valve is installed in the cab.

[0019] Gas cylinder No. Ⅰ 3 and gas cylinder No. Ⅱ 4 share a set of pressurizing device, and gas cylinder No. Ⅰ 3 is set as the main gas cylinder.

[0020] The liquid level transmitter 2 is connected to the instrument cluster assembly 1 via a data cable. The liquid level transmitter 2 can process the liquid level signal into a signal that can be recognized by the instrument cluster assembly 1 and transmit it.

[0021] The control module of the instrument cluster assembly 1 is set with a determination and alarm unit for the remaining amount of the gas cylinder, and the instrument cluster assembly 1 collects the liquid level signal of the liquid level transmitter 2. When the liquid level values ​​in the two gas cylinders change to a result that requires an alarm, the liquid level transmitter 2 transmits the alarm signal result to the instrument cluster assembly 1, and the instrument cluster assembly 1 issues an alarm to remind the driver to switch the gas supply valve of the LNG gas cylinder.

[0022] Embodiment 2: Specific implementation process using the structural form of embodiment 1.

[0023] The liquid level determination procedure added to the control module of the liquid level transmitter 2 or the instrument cluster assembly 1 is specifically as follows: when the liquid level height of the main gas cylinder is Lmin<L1≤L0, and the liquid level of other gas cylinders is L2>Lmin, an alarm prompt signal is issued. The alarm prompt signal is an audible and visual alarm of a buzzer plus an LED light. The instrument cluster assembly 1 in the cab issues a prompt sound to remind the driver to give priority to using gas cylinders other than the main gas cylinder.

[0024] Where L0 is the minimum liquid level height of the main bottle at which the booster device can discharge liquid normally, and Lmin is the minimum value that the gas cylinder level gauge can indicate.

[0025] The present utility model is not limited to the above-mentioned implementation modes, and anyone should be aware of the structural changes made under the inspiration of the present utility model. Any technical solutions that are the same or similar to the present utility model fall within the protection scope of the present utility model.

[0026] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A dual- or multi-bottle LNG heavy truck with a gas usage reminder function, characterized in that: The invention comprises a liquid level transmitter (2) and a gas cylinder, wherein at least two gas cylinders are provided, a gas cylinder liquid level gauge is installed in the gas cylinder, and the gas cylinder liquid level gauge is connected to the same liquid level transmitter (2) via a data cable. A gas cylinder remaining quantity determination and alarm unit is set in a control module of the combined instrument assembly (1), and the combined instrument assembly (1) collects the liquid level signal of the liquid level transmitter (2).

2. The double-bottle or multi-bottle LNG heavy truck with gas usage reminder function according to claim 1 is characterized in that: The liquid level transmitter (2) is connected to the instrument cluster assembly (1) via a data cable.

3. The double-bottle or multi-bottle LNG heavy truck with gas usage reminder function according to claim 1 is characterized in that: A valve is installed on the gas pipeline of the gas cylinder, and an electric control switch of the valve is installed in the cab.

4. The double-bottle or multi-bottle LNG heavy truck with gas usage reminder function according to claim 1 is characterized in that: When there are two or more gas cylinders, one gas cylinder is set as the main gas cylinder in the liquid level transmitter (2).

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