CN204472492U - Commercial refrigerator car LNG cold energy recovery system - Google Patents

Abstract

A commercial refrigerated vehicle LNG cold energy recovery system, comprising a refrigerated compartment (1), a vaporizer (4), an LNG liquid storage tank (5) and a coolant tank (7), and a circulation fan (3) is arranged in the refrigerated compartment (1) ), the LNG liquid storage tank (5) is connected with the inlet of the natural gas channel of the carburetor (4), the outlet of the natural gas channel of the carburetor (4) is connected with the engine, and the coolant tank (7) is connected with the carburetor (4) coolant through the electric water pump (6) The inlet is connected, the refrigerated compartment (1) is equipped with a radiator (2), the inlet of the radiator (2) is connected with the outlet of the coolant of the evaporator (4), and the outlet of the radiator (2) is connected with the coolant tank (7) , the position of the radiator (2) corresponds to that of the circulation fan (3). The structure is simple, which realizes the recovery of LNG cold energy of commercial refrigerated vehicles, and reduces the burden on refrigerated vehicles.

Description

A commercial refrigerated vehicle LNG cold energy recovery system

technical field

The utility model relates to an LNG cold energy recovery system, in particular to an LNG cold energy recovery system for a commercial refrigerated vehicle, which belongs to the technical field of commercial vehicle engine system design.

Background technique

At present, LNG (liquefied natural gas) has been widely used in commercial vehicles, and when LNG is used as a vehicle fuel, it needs to expand and gasify from a low-temperature liquid at -160°C to a normal temperature gas. Existing commercial refrigerated trucks rely on cooling methods similar to air conditioners; at the same time, the engines of commercial refrigerated trucks mostly use LNG as fuel, as shown in Figure 2. LNG enters the carburetor 4 from the LNG storage tank 5, and the coolant The coolant in the water tank 7 enters the carburetor 4 through the electric water pump 6 to heat the LNG so that the LNG is heated and vaporized by the carburetor 4, and the heated and vaporized LNG becomes gaseous natural gas that can be directly used by the engine and enters the engine; the cold energy of the LNG is cooled After the water is absorbed, it directly returns to the coolant water tank 7, and is finally brought into the atmosphere by the cooling system of the engine. Therefore, a considerable part of the cold energy of LNG is taken away by the engine or directly discharged into the air without being utilized; at the same time, the cold energy required by the refrigerated truck is provided by a separate refrigeration system, resulting in a large amount of waste of cold energy.

Contents of the invention

The purpose of the utility model is to provide a commercial refrigerated vehicle LNG cold energy recovery system for the problems that the LNG cold energy of a commercial refrigerated vehicle is not utilized, resulting in a large amount of waste of cold energy.

In order to achieve the above object, the technical solution of the present utility model is: a commercial refrigerated vehicle LNG cold energy recovery system, including a refrigerated compartment, a vaporizer, an LNG liquid storage tank and a coolant tank, and a circulating fan is arranged in the refrigerated compartment , the LNG liquid storage tank is connected with the inlet of the gas channel of the carburetor, the outlet of the natural gas channel of the carburetor is connected with the engine, the coolant water tank is connected with the coolant inlet of the carburetor through an electric water pump, and the inside of the refrigerated car is provided with Radiator, the inlet of the radiator is connected with the outlet of the coolant of the evaporator, the outlet of the radiator is connected with the water tank of the coolant, and the position of the radiator corresponds to the circulation fan.

Compared with the prior art, the beneficial effects of the utility model are:

The structure is simple, which realizes the recovery of LNG cold energy of commercial refrigerated vehicles, and reduces the burden on refrigerated vehicles. In the utility model, a radiator is arranged in the refrigerated compartment, the inlet of the radiator is connected with the outlet of the coolant of the carburetor, the outlet of the radiator is connected with the water tank of the coolant, and the position of the radiator corresponds to the circulation fan; the low-temperature coolant coming out of the carburetor Entering the radiator, the circulating fan blows the radiator, thereby keeping the cold energy of LNG in the refrigerated compartment, which solves the problem of wasting cold energy of LNG in commercial refrigerated vehicles, reduces the power consumption of refrigerated vehicles, and thus reduces fuel consumption.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the LNG vaporization structure of an existing commercial refrigerated vehicle.

In the figure, a refrigerated compartment 1, a radiator 2, a circulation fan 3, a carburetor 4, an LNG liquid storage tank 5, an electric water pump 6, and a coolant tank 7.

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, a commercial refrigerated vehicle LNG cold energy recovery system includes a refrigerated compartment 1, a vaporizer 4, an LNG liquid storage tank 5 and a coolant tank 7. The refrigerated compartment 1 is provided with a circulating fan 3, the LNG liquid storage tank 5 is connected to the inlet of the natural gas channel of the carburetor 4, the outlet of the natural gas channel of the carburetor 4 is connected to the engine, and the coolant tank 7 is connected to the engine through an electric water pump. 6 is connected with the coolant inlet of the carburetor 4. The refrigerated compartment 1 is provided with a radiator 2, the inlet of the radiator 2 is connected with the coolant outlet of the carburetor 4, and the outlet of the radiator 2 is connected with the coolant tank 7; the position of the radiator 2 is connected with the circulation fan 3 Correspondingly, it is used to absorb cold energy into the refrigerated compartment 1 .

Referring to Fig. 1, during operation, LNG enters the carburetor 4 from the LNG storage tank 5, and at the same time, the electric water pump 6 pumps the coolant from the coolant tank 7 into the carburetor 4 to heat the LNG so that the LNG is heated and vaporized by the carburetor 4, realizing Heat exchange between LNG and coolant; the heated and vaporized LNG becomes gaseous natural gas that can be directly used by the engine and enters the engine to participate in combustion and work. The cooling liquid turns into a low-temperature liquid after passing heat through the evaporator 4, and the low-temperature cooling liquid enters the radiator 2, and the circulating fan 3 blows the radiator 2 to realize the heat exchange between the air in the refrigerated compartment 1 and the radiator 2; LNG After the cold energy is absorbed, the coolant returns to the coolant tank 7, thereby leaving the LNG cold energy in the refrigerated compartment 1, realizing the recovery of the LNG cold energy, and then realizing the refrigeration of the refrigerated compartment 1. And because the radiator 2 is arranged inside the refrigerated compartment 1, it directly exchanges heat with the air in the refrigerated compartment 1, so that the cooling energy loss is small and the cooling effect is good. Through this cold energy recovery system, the power consumption of the refrigerated vehicle can be reduced by 3~5KW. Consumption, saving energy.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, some simple deduction or replacement can also be made without departing from the concept of the utility model, and the above structures should be regarded as belonging to the protection scope of the utility model.

Claims (1)

1. A commercial refrigerated vehicle LNG cold energy recovery system, including a refrigerated compartment (1), a vaporizer (4), an LNG liquid storage tank (5) and a coolant tank (7), and the refrigerated compartment (1) is provided with There is a circulating fan (3), the LNG storage tank (5) is connected to the inlet of the gas channel of the carburetor (4), the gas channel outlet of the carburetor (4) is connected to the engine, and the coolant tank (7) passes through The electric water pump (6) is connected with the coolant inlet of the carburetor (4), and it is characterized in that: a radiator (2) is arranged in the refrigerated compartment (1), and the inlet of the radiator (2) is connected to the carburetor (4) ) to the coolant outlet, the radiator (2) outlet is connected to the coolant tank (7), and the position of the radiator (2) corresponds to the circulation fan (3).