Vehicle CNG Dewar Cylinder

Introduction

Vehicle CNG Dewar Cylinder  usually adopt a double-layer structure, with a vacuum layer between the inner and outer walls to reduce heat transfer and keep the gas in the bottle at a low temperature and high pressure. The inner wall is in direct contact with natural gas and is generally made of special low-temperature resistant materials that can withstand the test of high pressure and low temperature; the outer wall plays a role of protection and support, and usually uses high-strength steel or composite materials to ensure the safety and stability of the container. CNG cylinders are used to replace traditional gasoline or diesel fuel tanks and are usually installed in the trunk, chassis or compartment of the vehicle.

 

Advantages

High pressure resistance:
Our CNG dewar flask for vehicles has undergone rigorous pressure testing and can usually withstand pressures up to 20MPa or even higher. In actual use, even under various complex road conditions and environmental conditions, the compressed natural gas in the bottle can be stably stored without safety hazards due to pressure changes.

 

Flexible installation:
The CNG dewar flask for vehicles can be installed according to the structure and space requirements of different vehicles, and can usually be installed in the trunk, chassis or compartment of the vehicle. The installation process is relatively simple and can generally be completed by professional installers in a short time. The installation time of ordinary car dewar flasks may be completed within a few hours.

 

Good thermal insulation performance:
The CNG dewar flask for vehicles adopts advanced thermal insulation technology, such as vacuum layer plus high-efficiency thermal insulation materials (such as nanoporous materials), and the heat transfer coefficient is extremely low. This allows the compressed natural gas in the bottle to remain at a low temperature for a long time, reducing the loss of natural gas gasification.

 

Strong material structure:
Our CNG dewar flask for vehicles is made of high-strength steel with excellent impact and corrosion resistance. The structure adopts a double-layer design, with a vacuum layer between the inner and outer walls, which can effectively reduce the impact of external impact on the bottle body.

 

Large-capacity storage:
We have different specifications of CNG dewar bottles for vehicles to meet the endurance requirements of different vehicles, and the general capacity ranges from tens of liters to hundreds of liters. Taking taxis as an example, a dewar bottle with a larger capacity can travel hundreds of kilometers, reduce the number of refueling times, and improve operational efficiency.

 

Easy to operate:
During use, the CNG dewar bottle for vehicles is similar to a traditional fuel tank, and refueling is performed at a gas station. Its refueling port is reasonably designed and easy and quick to connect. At the same time, the vehicle's dashboard usually has functions such as natural gas pressure display, which is convenient for the driver to understand the fuel status at any time.

 

Application

1. Buses and Taxis:

Vehicle CNG dewar cylinder plays an important role in the public transportation system. Buses and taxis are important components of urban transportation, and their exhaust emissions have a direct impact on environmental quality. Vehicles using CNG as fuel can achieve a low-carbon and environmentally friendly operation mode by being equipped with CNG dewar cylinders. When these vehicles are driving, the CNG dewar cylinder provides a stable energy supply, ensuring the normal operation of the vehicles and significantly reducing the emissions of harmful substances.

2. Vans and Trucks:

In freight and logistics, commercial vehicles consume large amounts of fuel and operate for long periods. Trucks and trucks that use CNG as fuel can significantly reduce fuel costs and improve economic benefits by installing vehicle CNG dewar cylinders. At the same time, these vehicles also reduce environmental pollution during operation, which is in line with the development trend of green logistics.

3. Military and national defense:

In the field of military and national defense, the energy supply of vehicles is directly related to combat capabilities and strategic deployment. As a storage device for clean energy, automotive CNG dewar cylinders have been widely used in military vehicles. By using CNG as fuel, these vehicles not only reduce dependence on fossil fuels but also improve the environmental protection and sustainability of operations.

 

FAQ

1. What are the safety devices of CNG dewar flask for vehicles?
Our CNG dewar flask for vehicles is equipped with multiple safety devices. Including safety valve, which will automatically open when the pressure inside the bottle exceeds the set value to release the pressure and prevent the bottle from exploding; pressure sensor, which monitors the pressure inside the bottle in real time and provides safety warnings for the driver; and explosion-proof disk and other devices, which further enhance safety.

 

2. How is the thermal insulation performance of the CNG Dewar flask for vehicles?
The CNG Dewar flask for vehicles has excellent thermal insulation performance. It adopts a double-layer structure with a vacuum layer in the middle and combined with high-efficiency thermal insulation materials, which can effectively reduce heat transfer and keep the natural gas in the bottle at a low temperature.

 

3. What is the quality of the body material of the CNG Dewar flask for vehicles?
The body is made of high-strength steel or composite materials, which have excellent corrosion resistance, strength and low temperature resistance. These materials are strictly screened and tested to ensure that they meet national and industry standards and can be used for a long time in various harsh environments.

 

4. What is the basic working principle of a vehicle CNG dewar cylinder?

Vehicle CNG dewar cylinder is a container for efficiently storing compressed natural gas, and its working principle is based on the physical principle of high pressure. Natural gas is compressed to high pressure (usually 20-25MPa) at room temperature and stored in a Dewar flask made of high-strength materials. The Dewar flask adopts a double-layer structure, with the inner layer made of stainless steel or aluminum alloy and the outer layer made of insulating material to reduce heat transfer and keep the temperature of the gas in the bottle stable. When the vehicle needs energy, CNG is decompressed by a decompression device and supplied to the engine.

 

5. How is the storage pressure of the vehicle CNG dewar cylinder determined?

The storage pressure of the vehicle CNG dewar cylinder is determined based on the physical properties of natural gas, the material strength of the Dewar flask, and safety standards. Generally speaking, the higher the storage pressure, the more natural gas can be stored per unit volume, but the pressure bearing capacity and safety of the vehicle CNG dewar cylinder also need to be considered. Therefore, the choice of storage pressure needs to maximize storage efficiency while ensuring safety.

 

6. What are the insulation materials for vehicle CNG dewar cylinder? What are their functions?
The insulation materials of vehicle CNG dewar cylinder usually include vacuum layers, multi-layer reflective films, foam plastics, etc. The main function of these materials is to reduce heat transfer, keep the gas temperature in the bottle stable, and prevent the increase of gas pressure and safety hazards caused by temperature rise. At the same time, the insulation material can also improve the energy efficiency of CNG dewar flasks and reduce energy loss.

 

7. How does the capacity of the vehicle CNG dewar cylinder affect the cruising range of the vehicle?

The capacity of the vehicle's CNG dewar cylinder directly affects the cruising range of the vehicle. Generally speaking, the larger the capacity of the dewar flask, the more natural gas can be stored, thus providing a longer cruising range. However, it should be noted that while increasing the capacity of the dewar flask, factors such as the vehicle's load capacity and space layout also need to be considered. Therefore, when choosing a vehicle CNG dewar cylinder, it is necessary to make a reasonable configuration based on the actual needs and conditions of the vehicle.

 

8. How to maintain vehicle CNG dewar cylinder?

First, it is essential to inspect and test the vehicle's CNG dewar cylinder regularly. In terms of appearance inspection, it is necessary to regularly check whether the outer surface of the vehicle CNG dewar cylinder is damaged, cracked, rusted, or corroded, and check whether the fixing device is firm and reliable to ensure that it does not shift or fall off during driving. Leak detection cannot be ignored. You can use professional tools or soapy water tests to detect the interface, valve, and pipeline. A comprehensive air leakage test should be carried out every month to ensure the sealing of the gas supply system.

In terms of cleaning and maintenance, clean the outer surface regularly with a mild detergent and a soft cloth, avoid strong acids, alkalis, or abrasive detergents, and wipe dry after cleaning to ensure dryness and prevent corrosion; internal maintenance can be achieved by using high-quality natural gas and regularly replacing filters to ensure internal cleanliness without impurities.

 

9. How to ensure the safety of CNG dewar flask during vehicle driving?
On the one hand, when installing the dewar flask, professional technicians need to operate according to strict standards and specifications to ensure that the flask is firmly and reliably fixed and maintains a safe distance and connection with other parts of the vehicle. On the other hand, vehicle users need to regularly inspect and maintain the dewar flask, including checking whether the appearance of the flask is damaged, whether the valves and pipes are leaking, and whether the safety devices are working properly.

 

10. What is the service life of the CNG dewar flask? How to deal with it after expiration?
Generally speaking, the service life of a CNG dewar flask for vehicles is about 15 to 20 years, but this also needs to be determined based on the specific use and maintenance of the flask.

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