Why does natural gas always smell when it s first turned on?

This is because natural gas was very strong at that time, which was the original taste of natural gas.

The smell of natural gas is because the gas company added the odor agent tetrahydrothiophenol in order to make it easier for users to detect when supplying gas, and as long as there is a small amount of natural gas leakage, people will smell a special odor.

Why does natural gas smell.

The reason why natural gas smells is because the gas company adds the odorant tetrahydrothiophenol to make it easier for users to detect when supplying gas, and as long as there is a small amount of natural gas leakage, people will smell a special odor. ”

Because when the natural gas is first opened, it does smell very much, and it is to judge whether there is enough gas in it, and if it does not smell much, it is difficult to judge the gas inside.

If you use natural gas at home, you may smell a smell similar to bad eggs or rotten cabbage in your kitchen, and once you smell it, you will realize that there is a natural gas leak. But the main component of pure natural gas is methane, which has no odor. So why does the user smell a foul smell?

It turns out that the natural gas has been treated before entering the house, and in order to make the natural gas leak easy for people to discover, the personnel will add mercaptan with an unpleasant smell to the natural gas, so that they will notice something strange when they smell it. Scientists say that this ability allows humans to survive in dangerous environments, and that these volatile sulfides can help us not only distinguish between good and bad food, but also how much oxygen is in the atmosphere.

Why do humans have a special sense of the smell of sulfide? Neurobiologists from the University of Albany in the United States conducted a study on this topic and published the results in the American Chemical Society. In our olfactory sensory cells, there are specialized olfactory receptors that detect the gas molecules around us.

Once the olfactory receptor senses a particular gas molecule, it transmits the information to the brain, so that the sensation of the gas is formed in consciousness.

Among them, the researchers found that a receptor called "OR2T11" is particularly sensitive to mercaptans, which may be why humans are able to smell sulfides. In addition to this, researchers have also discovered that our nasal mucus contains copper and silver. The presence of these two metallic elements is traceable, but it plays a large role in the enhancement of the sense of smell.

Without the presence of copper and silver, the ability of the OR2T11 receptor to sense gas molecules would be diminished.

Because metals tend to react with sulfides more easily, for example, if you boil an egg in a silver container, you will soon notice that the silver container turns black. Our sense of smell depends on the presence of metal elements to detect such unpleasant smells.

This is actually the taste of hydrogen sulfide added to natural gas, not the taste of natural gas itself, because methane is natural gas, itself has no taste, therefore, once the leakage of natural gas occurs, and because he has no taste, it is not easy to be noticed by others, and it is more likely to cause accidents, and hydrogen sulfide is added to natural gas, this gas will not have any interference with methane, and secondly, the gas has a pungent taste. It can be an effective warning that there is a danger of gas leakage.

In fact, this smell is not from the natural gas itself, but is added later, so that people can smell it when the natural gas leaks, find it in time, and prevent a greater disaster.

Specially added. Natural gas itself is colorless and odorless, so for safety, it adds odor to play a preventive role.

Natural gas is also known as biogas. It is fermented by some crops such as bellflower grass roots. Naturally, it will have some stinky smell. But if the smell is strong, then be careful, it may be a gas leak.

You can check whether your natural gas pipeline is leaking, if it is normal, there should be a leak nearby through the wind and drifting in through your window.

First of all, check the hose, whether it is due to the aging of the hose cracked or falling off caused by gas leakage, if so, only need to replace the hose hose or install it correctly from the new, if it is the gas stove head of the gas stove is not ignited to produce the gas smell, turn off the gas stove in time and open the window for ventilation.

If you always smell gas at home, you should check whether there is any gas leakage at the interface of the gas tank, check whether the gas pipe is aging and leaking, etc.;

Every time you turn on the gas stove, you can smell the gas smell, causes and solutions:

Cause: The gas pipeline at the bottom is loose or falling off, resulting in a gas leakage, or insufficient gas combustion, which is not a big problem.

Solution: Check the gas pipeline at home, it is best to choose a safe stainless steel bellows for the kitchen gas pipe, the gas hose needs to be replaced after more than two years, it is recommended to find a gas company for maintenance.

Inspection of gas pipes.

If soap bubbles keep coming out, it means that there is a leakage problem in the gas pipe at home, and it should be dealt with immediately. Of course, don't panic even if there is a gas leak, open the windows for ventilation first, and remember not to turn on any electrical appliances.

If there is no leakage problem in the gas pipe at home, then it is likely to be caused by insufficient gas combustion, and insufficient gas combustion will also produce carbon monoxide emitted in the air, but this problem is relatively simple to deal with, and you can adjust the damper.

There are two movable slides under the gas stove, which can be lit and then tossed until the flame turns blue. Note that in the process of adjustment, if the flame is straight up, it means that the damper is too large, and if the flame is erratic, it means that the damper is too small, so don't get confused.

Indoor gas pipelines can not hinder the later maintenance, that is, can not be placed in the cabinet, the solution now is to call the local gas customer service ** to notify the repair, door-to-door maintenance is not costly, to involve the replacement of pipe fittings is charged, according to their ** table to charge, you said that the gas company said that it is okay, you ask what the leakage test gas value is, if it exceeds the standard, he wants to say that it is okay, you will earn, feedback complaints I think the staff will deal with you immediately. If the water pressure at the outlet is normal, it depends on whether the fire is ignited. If you can't hear the sound of ignition, first see whether the battery is in poor contact or there is no electricity, and if there is no problem with the battery, most of them are poor contact with the main switch of water control.

Open the water heater shell, it is easy to see the water control power main switch installed in the lower part of the water heater, black plastic, and there is a small iron piece on the right side pressing a small contact, pressing is off, loosening is on. You can use your fingernails to break a small piece of iron to the right, artificially loosen the switch, and it will be ignited immediately if it is normal, if there is no ignition, most of the switches are broken, and the damage rate of this switch is very high. This switch is not expensive, just buy one and replace it.

If you hear the sound of a fire, it depends on whether it burns and goes out, or if there is no movement at all. If it is the former, it means that the solenoid valve is opened for a while, and then closed again, and a small "tuo" sound of the solenoid valve opening can generally be heard close to the water heater. If it is the latter, the solenoid valve is generally not opened at all, most of the lighters are broken, and you can replace one, and the solenoid valve will generally not be damaged, that is, the damage rate is low.

However, because the inferior water heater uses inferior materials to make the solenoid valve pull rod, it is easy to rust, and the pull rod movement is not smooth, resulting in the solenoid valve can not be opened, but it can be disassembled to scrape the rust and put the motorcycle oil, and the sliding and sliding can return to normal. Extinguishing once burned means that the lighter can work normally all at once. The occurrence of this phenomenon is related to the energy-saving design of the lighter.

Those who have studied electrical engineering will know that an electromagnet needs a large current when it is started, and only a small maintenance current is required after starting. There are two currents when the lighter controls the opening of the solenoid valve, and the solenoid valve also has two sets of working coils. When it is first started, there is generally a current flowing out of both channels, so that the solenoid valve can be opened smoothly, and after opening, there is no need for such a large current, so the one called the starting circuit is turned off.

The starting current is generally large, and the solenoid valve can be activated alone. At this point, everyone should understand that it will be extinguished after burning, and it should be a problem to maintain the current. The maintenance circuit is abnormal either because the battery voltage is too low, or there is a problem with the lighter, change it.

The smell of the gas stove is just used to burn the stove, and the second use is significantly reduced, which is normal. If you use it in the future, it still smells of rubber, which is a quality problem.

After the replacement of natural gas, there are many unpleasant odors when using natural gas, which may be the leakage caused by the lack of natural gas docking, or the residual smell of insufficient combustion of natural gas - check whether the natural gas docking is stable or not, whether the hose is aged and broken, confirm that the docking is stable and the hose is not abnormal (if the aging is serious, it must be replaced), and then adjust the stove damper to a suitable position to ensure that the mixture of natural gas and oxygen can be fully combusted.

That's usually the gas that comes out of the decompression felling at the moment of opening, and it's usually fine, but it's better to close the valve and check it for safety. After the gas tank leaks, check the cause of the gas leakage, open the main valve, pour some soapy water or wash semen water on the valve and the joints near the valve and other places that may leak to see if there is bubbling, bubbling is leakage. If it is caused by loose parts, it can be tightened; If the parts are damaged and cause air leakage, they should be repaired before they can be used again.

There are 3 places where the main valve may leak: one is the joint where the valve is connected to the gas cylinder, the second is the joint where the valve is connected to the gas stove, and the third is the valve handle, there is a nut under the valve handle, which is a gland, pressing the sealing ring, if the valve handle is leaking, use a wrench to tighten the nut, not too tight, otherwise the switch valve will be very difficult, tight to not leak. Note:

Don't see an open flame before repairing, don't light a fire and smoke, because your water heater will have some exhaust gas after use, that is, it can't be completely burned in the water heater.

After you turn it on, the gas arrives, and it is good to get full burning.

This is relatively normal, does not affect your use, and is not dangerous.

But you have to keep it ventilated.

Summary. After the replacement of natural gas, many users report that they will smell peculiar smell when using natural gas, which is mostly caused by insufficient combustion of natural gas and exhaust gas overflow.

After the replacement of natural gas, many users report that they will smell peculiar smell when using natural gas, which is mostly caused by insufficient combustion of natural gas and exhaust gas overflow.

After the replacement of natural gas, many users report that they will smell peculiar smell when using natural gas, which is mostly caused by insufficient combustion of natural gas and exhaust gas overflow.

In addition, if the smell is caused by a natural gas leak, natural gas users should pay attention to this and check whether the clamp at the connection between the hose and the stove and pipe is clamped well, whether it falls off or loosens, and whether the hose is aged or broken.

The odorant artificially added to natural gas is tetrahydrothiophene, also known as thiophenane or THT for short.

Tetrahydrothiophene is an organic substance with the chemical formula C4H8S. The substance is a sulfur-saturated heterocyclic compound obtained by catalytic hydrogenation of thiophene, and after thiophene is reduced to tetrahydrothiophene, it no longer has a conjugated system and aromaticity, so tetrahydrothiophene shows the properties of general thioether and is easily oxidized to sulfoxide and sulfone (sulfolane).

Tetrahydrothiophene is not corrosive to gas equipment, transportation pipeline gaskets and other materials, and will not produce habitual passivation to the human sense of smell, so it is used as a leakage warning agent for gaseous fuels such as city gas and natural gas, and is added to gaseous fuels in small quantities, banning the original use of odorants such as ethyl mercaptan.

No, but an unpleasant odor mercaptan is added to domestic natural gas to make people aware of the gas leak in time. Therefore, there is a smell of domestic natural gas. Natural gas is a gaseous fossil fuel composed mainly of methane.

It is mainly found in oil fields and natural gas fields, and a small amount is also found in coal seams. When non-fossil organic matter decays anaerobically, it produces a methane-rich gas called natural gas. It itself is a colorless and odorless gas.

How to judge whether domestic natural gas is leaking: 1. Before natural gas is delivered to the end user, in order to help leak detection, mercaptan, tetrahydrothiophene, etc. should be used to add odor to natural gas. So the first step can be judged by smelling the smell.

However, due to the complex taste of various foods in the kitchen, it is sometimes impossible to accurately judge by smelling the smell.

2. At the pipe interface, or emitted"Woooo"Apply dish soap or soapy water to the area where the sound sounds, and if there is a gas leak, bubbles will come out. Do not use an open flame to check for leaks.

3. When natural gas is not used, the pointer of the natural gas meter is moving.

4. If there is an alarm installed at home, once there is a natural gas leak, the alarm will alarm.