How to unload the LNG tanker with water

Water is solid ice at -162 degrees, if there is not much moisture, it should be frozen along the inner wall of the tank, not very thick chunk, except for the kind of pipe with a relatively small caliber, such as a pressurized tube, the ice that comes out with the liquid should not be much, and the water vapor after vaporization should not have much effect on the trialist.

You simply use up the LNG of this car, and then use a fan to enter from the liquid phase tube after venting the pressure, and drain the water inside the pipe to dry it (you can also use dry nitrogen to replace it slightly before, safe point), you can pour some hot water outside the booster pipe, and then replace it with dry nitrogen, and then replace it with dry natural gas, and then pre-cool it with cold natural gas, pre-cooling can use the LNG of the ground tank to use the cold natural gas after gasification with a supercharger to enter the car from the liquid phase port, and then return to the ground tank from the gas phase port, and wait for all the frost outside the hose. Even if it is pre-cooled, it can be used normally in the future.

First: What is the state of water in LNG (-162 degrees)? Is it sticky? Is it a large block of ice clinging to the bottom of the tanker, or is it a Xiaoice block that breaks into pieces in the liquid?

Second: Will the liquid coming out of the tanker contain ice cubes?

Thirdly, what is the effect of such a gas on the regulator?

Fourth: Can a natural gas filter filter filter the moisture in the gas?

Fifth: Will there be any effect on the customer's use of the sample?

The level gauge probe, the thin pipes must have been blocked because the water turned into ice.

So. Classify.

1. The water must be solid, ice-like, and it should be a Xiaoice lump made of water droplets.

2. The liquid that comes out should not contain ice cubes.

3. It has no effect on pressure.

4. Filtration, which can filter out water and impurities.

5. The impact of customer use is not large.

It is recommended that you replace the liquid with nitrogen after unloading. Then check if the meter is good.

Summary. Vacuum leakage of LNG tanker.

Leakage occurs when the low-temperature LNG tanker is unloaded.

Immediately stop the loading and unloading operation, open the emergency release valve at the rear of the car, close all valve switches on the car, and close the pipeline inlet valve;

Quick removal of the loading and unloading hose (emergency pull off if necessary);

Leakage of piston ring of the pump body when the cryogenic pump of the cryogenic LNG tanker is loaded and unloaded Immediately stop the loading and unloading operation, open the emergency release valve at the rear of the vehicle, close all valve switches on the vehicle, and close the pipeline inlet valve. Look for leaks.

Leakage of pipeline valve when the cryogenic pump of the cryogenic LNG tanker is loaded and unloaded Immediately stop the loading and unloading operation and open the emergency release valve at the rear of the vehicle.

What to do if the vacuum leakage of the LNG tanker.

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When the LNG tanker leaks when the LNG tanker is unloaded, the loading and unloading operation should be stopped immediately, the emergency release valve at the rear of the vehicle should be opened, all valve switches on the vehicle should be closed, and the pipeline inlet valve should be closed. Quickly dismantle the loading and unloading hose (if necessary, it can be pulled off urgently); 2.Leakage of piston ring of the pump body when the cryogenic pump of the cryogenic LNG tanker is loaded and unloaded Immediately stop the loading and unloading operation, open the emergency release valve at the rear of the vehicle, close all valve switches on the vehicle, and close the pipeline inlet valve. Look for leaks.

3.Leakage of pipeline valve when the cryogenic pump of the cryogenic LNG tanker is loaded and unloaded Immediately stop the loading and unloading operation and open the emergency release valve at the rear of the vehicle.

To screw the knob switch to the off position. If there is a leak during the unloading process, the emergency shut-off button should be pressed immediately, and corresponding emergency measures should be taken.

Introduction to gas combustion

The best state of gas combustion, the flame is blue, and the inner flame is clear. If you need to adjust the flame burning state, adjust the damper at the bottom of the cooktop.

Regularly replace the gas equipment section with the consumption system, and the gas facilities need to be replaced regularly for a period of time. The service life of natural gas cookers and water heaters is eight years, and there are potential safety hazards if the service life exceeds the life. In particular, the use of in-line gas water heaters has been clearly prohibited.

Flame-out protection, use a gas cooktop with flame-out protection. During the security check, it was found that some residents were still using stoves without flame-out protection. According to statistics, accidents caused by accidental flameout of gas cookers account for more than 30% of indoor gas accidents.

How can the liquid of the LNG tank truck be poured into the small gas cylinder? 1.To confirm the interface type of the small gas cylinder, you first need to confirm the interface type of the small gas cylinder, there are generally two kinds:

CGA 440 and CGA 677. Different adapters are required for different interfaces. You can check the instruction manual of the small gas cylinder or ask the seller.

2.Confirm the temperature and pressure of the liquidLiquefied natural gas (LNG) is a liquid at room temperature and pressure, and needs to be at a certain temperature and pressure to remain liquid. Therefore, it is necessary to confirm that the temperature and pressure of the liquid meet the requirements before pouring the liquid.

Generally, the temperature of the liquid should be around -162 and the pressure should be around it. 3.Connecting Adapters and Small Gas Cylinders: Depending on the type of connection for the small gas cylinder, select the appropriate adapter to connect to the liquid outlet.

Insert the adapter into the port of the small gas cylinder and secure the small cylinder to ensure that there is no leakage. 4.After confirming that the temperature and pressure of the liquid meet the requirements, the liquid output valve can be opened to allow the liquid to enter the adapter and small gas cylinder.

In the process of pouring liquid, it is necessary to pay attention to safety to avoid accidents such as leakage and **. 5.Close the liquid output valveWhen the liquid is poured, the liquid output valve needs to be closed to avoid further outflow.

Then remove the adapter on the small gas cylinder, wash and store. It is necessary to pay attention to safety during operation to avoid unexpected situations.