CN210454392U

CN210454392U - LNG cold energy recovery air conditioner cooling device

Info

Publication number: CN210454392U
Application number: CN201921184382.2U
Authority: CN
Inventors: 何世辉; 冯自平; 张建军
Original assignee: Guangzhou Institute of Energy Conversion of CAS
Current assignee: Guangzhou Institute of Energy Conversion of CAS
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-05-05
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses an LNG cold energy recovery energy storage ice making device, an LNG cold energy recovery air conditioner cooling device, which comprises an LNG vaporization heat exchange system and an air conditioner cooling heat exchange system; the LNG vaporization heat exchange system comprises an LNG storage tank, an ejector, an energy storage device, a superheater and a natural gas engine which are connected through an LNG pipeline; the air-conditioning cooling heat exchange system comprises an energy accumulator, an air-conditioning evaporator and a secondary refrigerant circulating pump which are connected through a secondary refrigerant pipeline. The utility model discloses utilize LNG's vaporization process to retrieve cold energy for the air conditioner in armor, tank vehicle passenger cabin and vehicle electron heating element's cooling, its simple structure, electron heating element is few, and complete machine volume occupation space is little, can solve the various difficult problems of the unable installation air conditioner of present armor, tank vehicle, has improved the air conditioner cooling performance of armor, tank vehicle greatly, and vehicle stealth obtains the reinforcing simultaneously, has improved the combat performance of vehicle.

Description

LNG cold energy recovery air conditioner cooling device

Technical Field

The utility model relates to a LNG cold energy recycle field, concretely relates to LNG cold energy retrieves air conditioner cooling device.

Background

Armored and tank vehicles are the main battle equipment in modern ground wars, the cab space of the vehicles is narrow, and the engines and the electronic equipment in the vehicles release a large amount of heat. Due to the structural design requirements of armors and tanks and the stealth requirement of battle, the space for installing the traditional air conditioning system cannot be provided. But the proper temperature of the passenger compartment and the good cooling of the electronic elements can better exert the fighting efficiency of armors and tank vehicles on the battlefield. Therefore, the air-conditioning cooling system of the armored and tank vehicle, which has small volume, simple system, safety and stability, can be provided, and is particularly important for the modern ground wars. Traditional armoured, tank vehicle all adopt diesel engine as power, nevertheless along with the development of new forms of energy and the strategic security of many energy system supplies to it is inevitable trend as power to Liquefied Natural Gas (LNG) engine, and utility model an LNG cold energy retrieves air conditioner cooling device just has important meaning like this.

The existing air-conditioning cooling device for the armored tank has the following problems: 1. the air conditioner cooling device system is complex and large in size and cannot provide enough installation space; 2. the electronic elements are multiple, and are easy to be detected by infrared, and the stealth performance is poor; 3. the construction cost is high, the installation is complex and the maintenance is difficult; 4. limited by empty space, cannot be installed in batches and is difficult to popularize.

Therefore, the existing air-conditioning cooling device for the armored tank and the tank vehicle needs to be innovated and developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, small relatively, electric elements are few, maintain convenient, novel environmental protection, be applicable to armoured, tank vehicle's LNG cold energy recovery air conditioner cooling device.

In order to achieve the above object, the utility model adopts the following technical scheme:

an LNG cold energy recovery air conditioner cooling device comprises an LNG vaporization heat exchange system and an air conditioner cooling heat exchange system;

the LNG vaporization heat exchange system comprises an LNG storage tank, an ejector, an energy storage device, a superheater and a natural gas engine which are connected through an LNG pipeline; LNG liquid in the LNG storage tank enters the energy accumulator through the ejector, releases cold energy to the energy accumulator, then enters the superheater, and enters the natural gas engine after being further heated;

the air-conditioning cooling heat exchange system comprises an energy accumulator, an air-conditioning evaporator and a secondary refrigerant circulating pump which are connected through a secondary refrigerant pipeline; the secondary refrigerant from the secondary refrigerant circulating pump enters the energy storage device, enters the air-conditioning evaporator after heat exchange and temperature reduction, releases cold energy to outside air and then enters the secondary refrigerant circulating pump.

As an improvement of the utility model, the LNG storage tank on still be provided with pressure boost vaporizer and pressure boost valve, LNG storage tank, pressure boost vaporizer and pressure boost valve connect gradually and constitute the return circuit. When the pressure of the inner cavity of the LNG storage tank is lower than a set value, the booster valve is automatically opened, liquid LNG enters the booster vaporizer, vaporized LNG gas is refilled into the LNG storage tank, and the pressure of the LNG storage tank is kept constant.

As an improvement of the utility model, the air-conditioning cooling heat exchange system further comprises a cooler connected on the secondary refrigerant pipeline and connected with the air-conditioning evaporator in parallel. The cooler may be used to cool electronics on an armor, tank, or the like to maintain their normal operating temperature.

As an improvement of the utility model, the air conditioner evaporator is also matched with a fan for forced air circulation.

As an improvement of the utility model, the energy accumulator comprises a first energy accumulator and a second energy accumulator which are arranged in parallel; the first energy accumulator is connected with the ejector through a first electromagnetic valve, and the second energy accumulator is connected with the ejector through a second electromagnetic valve.

Compared with the prior art, the utility model, its beneficial effect lies in:

1. the device has the advantages of simple structure, centralized integral assembly of all parts, small occupied volume and space, small resistance, convenient maintenance and long service life.

2. The functions of armor, tank vehicle air conditioner and cooling are increased by recovering cold energy, the comfort and the safety performance of the chariot are improved, and the stealth performance of the chariot is also improved.

3. The cold energy recovery system can automatically adjust the recovery amount according to the gas consumption, and does not influence the gasification amount and the gas supply amount of the LNG.

4. The system has an energy storage function and is independently and automatically adjusted according to the load.

Drawings

Fig. 1 is a schematic structural diagram of an LNG cold energy recovery air conditioner cooling device of the present invention;

description of reference numerals: 1-an LNG storage tank; 2-a pressurized vaporizer; 3-an LNG switching valve; 4-an LNG pipeline; 5-an ejector; 6, a first electromagnetic valve; 7-a second electromagnetic valve; 8, a first energy storage device; 9-switching valve I; 10-switching valve II; 11-a fan; 12-air conditioning evaporator; 13-a cooler; 14-a coolant conduit; 15-coolant circulation pump; 16-a superheater; 17-a second energy storage device; 18-a pressure increasing valve; 19-natural gas engine.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and examples. The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example (b):

as shown in fig. 1, an LNG cold energy recovery air-conditioning cooling device includes an LNG vaporization heat exchange system and an air-conditioning cooling heat exchange system.

The LNG vaporization heat exchange system comprises an LNG storage tank 1, a pressure boost vaporizer 2, an LNG switch valve 3, an ejector 5, a first electromagnetic valve 6, a second electromagnetic valve 7, a first energy accumulator 8, a superheater 16, a second energy accumulator 17, a pressure boost valve 18 and a natural gas engine 19, and all the components are connected through an LNG pipeline 4.

LNG liquid in the LNG storage tank 1 enters the ejector 5 through the LNG switch valve 3 and is divided into two paths, one path enters the first energy storage device 8 through the first electromagnetic valve 6, the LNG releases cold energy to the energy storage device, LNG liquid in the other path enters the second energy storage device 17 through the second electromagnetic valve 7, the LNG releases the cold energy to the second energy storage device 17, the heat exchange states of the first energy storage device 8 and the second energy storage device 17 are switched by the first electromagnetic valve 6 and the second electromagnetic valve 7 in a clearance mode, LNG vapor-liquid mixtures coming out of the first energy storage device 8 and the second energy storage device 17 enter the superheater 16, are further heated through the superheater 16, and finally enter the natural gas engine 19.

The pressurization vaporizer 2 and the pressurization valve 18 are both arranged on the LNG storage tank 1 and are sequentially connected to form a loop, when the pressure in the inner cavity of the LNG storage tank 1 is lower than a set value, the pressurization valve 18 is automatically opened, liquid LNG enters the pressurization vaporizer 2, vaporized LNG gas is refilled into the LNG storage tank 1, and the pressure of the LNG storage tank 1 is kept constant. The cold storage materials in the first energy storage device 8 and the second energy storage device 17 can be secondary refrigerants of an air conditioner cooling heat exchange system, and other cold storage materials can also be adopted, so that the cold energy of LNG is stored in the cold storage materials firstly, and is transferred to the secondary refrigerants when refrigeration is needed. The superheater 16 may be a conventional LNG air cooler or a conventional LNG gasifier, and the heat source thereof may be electric energy, or heat energy generated by the operation of the natural gas engine 19 may be directly utilized.

The air-conditioning cooling heat exchange system comprises a first energy storage device 8, a first switching valve 9, a second switching valve 10, a fan 11, an air-conditioning evaporator 12, a cooler 13, a secondary refrigerant circulating pump 15 and a second energy storage device 17, and all the components are connected through a secondary refrigerant pipeline 14.

The secondary refrigerant is filled into inner cavities of pipelines and components in the air-conditioning cooling heat exchange system, a secondary refrigerant circulating pump 15 is used as secondary refrigerant circulating power, the secondary refrigerant enters a first energy storage device 8 and a second energy storage device 17 from an outlet of the secondary refrigerant circulating pump 15 as required, the secondary refrigerant is divided into two paths after heat exchange and temperature reduction in the energy storage devices, one path of the secondary refrigerant enters a cooler 13 through a first switching valve 9 and is used for cooling electronic elements required to be refrigerated inside armored and tank vehicles, the other path of the secondary refrigerant enters an air-conditioning evaporator 12 through a second switching valve 10, air outside the tubes is cooled through tube walls, then cold air is blown into a passenger cabin through a matched fan 11, the first switching valve 9 and the second switching valve 10 are automatically switched according to temperature control requirements, the secondary refrigerant absorbs heat in the air-conditioning evaporator 12 or the cooler 13, the temperature rises, and then returns to.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a LNG cold energy retrieves air conditioner cooling device which characterized in that: the LNG vaporization heat exchange system and the air conditioner cooling heat exchange system are included;

2. An LNG cold energy recovery air conditioner cooling device of claim 1, characterized in that: the LNG storage tank is also provided with a pressurization vaporizer and a pressurization valve, and the LNG storage tank, the pressurization vaporizer and the pressurization valve are sequentially connected to form a loop.

3. An LNG cold energy recovery air conditioner cooling device of claim 1, characterized in that: the air-conditioning cooling heat exchange system also comprises a cooler which is connected on the secondary refrigerant pipeline and is connected with the air-conditioning evaporator in parallel.

4. An LNG cold energy recovery air conditioner cooling device of claim 1, characterized in that: the air conditioner evaporator is also matched with a fan for forced air circulation.

5. An LNG cold energy recovery air conditioner cooling device of claim 1, characterized in that: the energy storage device comprises a first energy storage device and a second energy storage device which are arranged in parallel; the first energy accumulator is connected with the ejector through a first electromagnetic valve, and the second energy accumulator is connected with the ejector through a second electromagnetic valve.