CN110466312A - A kind of LNG cold energy recycling air-conditioning cooling device - Google Patents

Abstract

The invention discloses an LNG cold energy recovery energy storage ice making device, an LNG cold energy recovery air-conditioning cooling device, including an LNG vaporization heat exchange system and an air conditioning cooling heat exchange system; the LNG vaporization heat exchange system includes LNG storage tanks, injectors, accumulators, superheaters and natural gas engines connected by LNG pipelines; the air-conditioning cooling heat exchange system includes accumulators, air-conditioning evaporators and brine circulation pumps connected through brine pipelines . The invention utilizes the vaporization process of LNG to recover cold energy, which is used for the air conditioning of armored and tank vehicle crew compartments and the cooling of electronic heating elements of vehicles. The various problems that tank vehicles cannot be installed with air conditioners have greatly improved the air conditioning cooling performance of armored and tank vehicles. At the same time, the stealth of vehicles has been enhanced, which has improved the combat performance of vehicles.

Description

A kind of LNG cold energy recovery air conditioning cooling device

technical field

The invention relates to the field of recovery and utilization of LNG cold energy, in particular to an air conditioner cooling device for recovery of LNG cold energy.

Background technique

Armored and tank vehicles are the main combat equipment of modern ground warfare. Generally, the cab space of these vehicles is small, and the engine and its electronic equipment inside the vehicle will release a lot of heat. Due to the structural design requirements of armor, tank vehicles, and combat stealth requirements, it cannot provide space for installing traditional air-conditioning systems. However, the temperature of the passenger compartment is suitable and the cooling of electronic components is good, which can better play the combat effectiveness of armored and tank vehicles on the battlefield. Therefore, it is particularly important for modern ground warfare to provide a small, simple, safe and stable armor, tank vehicle air-conditioning and cooling system. Traditional armored and tank vehicles are powered by diesel engines, but with the development of new energy and the strategic security of multi-energy system supply, it is an inevitable trend to use liquefied natural gas (LNG) engines as power. It is of great significance to be able to recycle the air-conditioning cooling unit.

The existing air-conditioning and cooling devices for armored and tank vehicles have the following problems: 1. The system of the air-conditioning and cooling device is complicated and the volume is too large to provide enough installation space; 2. There are many electronic components, which are easily detected by infrared and have poor stealth performance; 3. Construction cost High, complex installation, and difficult maintenance; 4. Due to the limitation of empty installation space, it cannot be installed in batches, and it is difficult to promote.

Therefore existing armor, tank vehicle air-conditioning cooling device remains to innovate and develop.

Contents of the invention

The purpose of the present invention is to provide a simple structure, relatively small volume, less electrical components, convenient maintenance, new environmental protection, LNG cold energy recovery air-conditioning cooling device suitable for armored vehicles and tank vehicles.

To achieve the above object, the technical solution adopted in the present invention is:

An air-conditioning cooling device for LNG cold energy recovery, including an LNG vaporization heat exchange system and an air-conditioning cooling heat exchange system;

The LNG vaporization heat exchange system includes an LNG storage tank, an injector, an accumulator, a superheater and a natural gas engine connected by an LNG pipeline; the LNG liquid in the LNG storage tank enters the accumulator through the injector to release cold energy After being fed to the accumulator, it enters the superheater, and enters the natural gas engine after further heating;

The air-conditioning cooling heat exchange system includes an accumulator, an air-conditioning evaporator and a brine circulation pump connected by a brine pipeline; Enter the air conditioner evaporator, release the cold energy to the outside air and then enter the brine circulation pump.

As an improvement of the present invention, the LNG storage tank is further provided with a booster carburetor and a booster valve, and the LNG storage tank, the booster carburetor and the booster valve are sequentially connected to form a circuit. When the inner cavity pressure of the LNG storage tank is lower than the set value, the booster valve is automatically opened, the liquid LNG enters the booster vaporizer, and the vaporized LNG gas is refilled into the LNG storage tank to keep the pressure of the LNG storage tank constant.

As an improvement of the present invention, the air-conditioning cooling heat exchange system further includes a cooler connected to the brine pipeline and connected in parallel with the air-conditioning evaporator. Coolers can be used to cool down armor, electronic components on tank vehicles to maintain their normal operating temperature.

As an improvement of the present invention, the air conditioner evaporator is also equipped with a fan for forced air circulation.

As an improvement of the present invention, the accumulator includes accumulator 1 and accumulator 2 arranged in parallel; accumulator 1 is connected to the injector through solenoid valve 1, and accumulator 2 is connected to the injector through solenoid valve 2. The injector is connected.

Compared with the prior art, the present invention has the beneficial effects of:

1. The structure of the device is simple, and the components are assembled as a whole, occupying a small space, small resistance, convenient maintenance and long service life.

2. The recovery of cold energy increases the functions of armor, air conditioning and cooling of tank vehicles, improves the comfort and safety performance of the tank, and also improves the stealth performance of the tank.

3. According to the gas consumption, the cooling recovery system can automatically adjust the recovery volume without affecting the gasification volume and gas supply volume of LNG.

4. The system has the function of energy storage, which can be independently and automatically adjusted according to the load.

Description of drawings

Fig. 1 is the structural representation of the LNG cold energy recovery air conditioning cooling device of the present invention;

Explanation of reference signs: 1-LNG storage tank; 2-boosted vaporizer; 3-LNG switch valve; 4-LNG pipeline; 5-injector; 6-solenoid valve one; 7-solenoid valve two; 8-accumulator 1; 9-Switching valve 1; 10-Switching valve 2; 11-Fan; 12-Air conditioner evaporator; 13-Cooler; -accumulator two; 18-boosting valve; 19-natural gas engine.

Detailed ways

In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

Example:

As shown in Fig. 1, an air conditioner cooling device for LNG cold energy recovery includes an LNG vaporization heat exchange system and an air conditioner cooling heat exchange system.

LNG vaporization heat exchange system includes LNG storage tank 1, booster carburetor 2, LNG switch valve 3, injector 5, solenoid valve 1 6, solenoid valve 2 7, accumulator 1 8, superheater 16, accumulator 2 17 , booster valve 18 and natural gas engine 19, each component is connected through LNG pipeline 4.

The LNG liquid in the LNG storage tank 1 enters the injector 5 through the LNG switching valve 3 and is divided into two paths, one path enters the accumulator 8 through the solenoid valve 6, the LNG releases cold energy to the accumulator, and the LNG liquid of the other path passes through Solenoid valve 2 7 enters accumulator 2 17, LNG releases the cold energy to accumulator 2 17, and the heat exchange state of accumulator 1 8 and accumulator 2 17 is switched between solenoid valve 1 6 and solenoid valve 2 7 , the LNG gas-liquid mixture from accumulator one 8 and accumulator two 17 all enters the superheater 16, is further heated through the heater 16, and finally enters the natural gas engine 19.

Both the booster carburetor 2 and the booster valve 18 are installed on the LNG storage tank 1, and are connected in sequence to form a circuit. When the pressure in the inner cavity of the LNG storage tank 1 is lower than the set value, the booster valve 18 is automatically opened, and the liquid LNG enters the booster. The vaporizer 2, the vaporized LNG gas is refilled into the LNG storage tank 1 to keep the pressure of the LNG storage tank 1 constant. The cold storage material in accumulator 1 8 and accumulator 2 17 can be the refrigerant of the cooling heat exchange system of the air conditioner, and other cold storage materials can also be used. The cold energy of LNG is first stored in the cold storage material. When refrigeration is required, Then transfer to the brine. The superheater 16 can be a conventional LNG air cooler or vaporizer, and its heat source can be electric energy, or can directly utilize the heat energy produced by the natural gas engine 19 .

The air conditioner cooling heat exchange system includes accumulator one 8, switch valve one 9, switch valve two 10, fan 11, air conditioner evaporator 12, cooler 13, brine circulation pump 15 and accumulator two 17, and each component passes through Brine pipeline 14 is connected.

In the cooling and heat exchange system of the air conditioner, the pipeline and the internal cavity of the components are filled with brine, and the brine circulation pump 15 is used as the power for the brine circulation, and the brine enters the accumulator-8 and Accumulator 2 17 is divided into two paths after heat exchange and cooling in the accumulator, one path enters cooler 13 through switching valve 1 9, and is used to cool down the electronic components that need to be refrigerated inside armor and tank vehicles, and the other path is switched Valve 2 10 enters the air conditioner evaporator 12, cools the air outside the pipe through the pipe wall, and then blows the cold air into the passenger compartment through the supporting fan 11, and the switching valve 1 9 and switching valve 2 10 automatically switch according to the temperature control requirements , the brine absorbs heat in the air conditioner evaporator 12 or cooler 13 and the temperature rises, and then returns to the brine circulation pump 15 to form a heat exchange cycle.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and its purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the essence of the present invention shall fall within the protection scope of the present invention.

Claims (5)

1. a kind of LNG cold energy recycles air-conditioning cooling device, it is characterised in that: changed including LNG vaporization heat-exchange system and air-conditioning cooling Hot systems；

The LNG vaporization heat-exchange system include the LNG storage tank connected by LNG pipeline, injector, accumulator, superheater and Natural gas engine；LNG liquid in LNG storage tank enters accumulator through injector, enters after cold energy is released to accumulator Hot device enters natural gas engine after further heating；

The air-conditioning cooling heat-exchanging system includes being followed by accumulator, A/C evaporator and refrigerating medium that coolant ducts connect Ring pump；The refrigerating medium that refrigerating medium circulating pump comes out enters accumulator, enters A/C evaporator after heat exchange cooling, cold energy is discharged To after outside air enter refrigerating medium circulating pump.

2. a kind of LNG cold energy according to claim 1 recycles air-conditioning cooling device, it is characterised in that: the LNG storage tank On be additionally provided with boosting vaporizer and pressure charging valve, LNG storage tank, boosting vaporizer and pressure charging valve, which are sequentially connected, constitutes circuit.

3. a kind of LNG cold energy according to claim 1 recycles air-conditioning cooling device, it is characterised in that: the air-conditioning cold But heat-exchange system further includes one being connected to cooler in coolant ducts and in parallel with A/C evaporator.

4. a kind of LNG cold energy according to claim 1 recycles air-conditioning cooling device, it is characterised in that: the air-conditioning steams Hair device is also configured with the blower for forced air circulation.

5. a kind of LNG cold energy according to claim 1 recycles air-conditioning cooling device, it is characterised in that: the accumulator Including the accumulator one and accumulator two being arranged in parallel；Accumulator one is connected by solenoid valve one with injector, accumulator two-way Solenoid valve two is crossed to be connected with injector.