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[ Focus on Chemical Machinery and Equipment Network ] Affected by the cold wave, from 08:00 on November 4 to 08:00 on November 8, China will have a strong wind cooling weather process from northwest to southeast: the temperature in most areas will drop by 8-10 ℃ successively.
, Most of Inner Mongolia, North China, Huanghuai, Jianghuai, western Jianghuai, southern Northeast region and other places, the drop rate can reach 12-14℃, local local 16℃; accompanied by 4-6 northerly winds, gusts 7-8 ; On the morning of the 8th, the 0℃ line of the lowest temperature is located in central Shandong, central Henan and northern Sichuan.
The lowest temperature in northern South China will drop to about 10℃
.
Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment, Most of Inner Mongolia, North China, Huanghuai, Jianghuai, western Jianghuai, southern Northeast region and other places, the drop rate can reach 12-14℃, local local 16℃; accompanied by 4-6 northerly winds, gusts 7-8 ; On the morning of the 8th, the 0℃ line of the lowest temperature is located in central Shandong, central Henan and northern Sichuan.
The lowest temperature in northern South China will drop to about 10℃
.
In fact, when people are being attacked by the "magic" of cold or dampness, the instruments and meters that are outdoors or indoors are also "tortured" by the cold
.
Especially in the winter in the north, as the temperature drops, many instruments and meters often suffer greatly from their performance due to low temperatures
.
For example, some instruments and equipment for measuring flow and liquid level will cause inaccurate measurement due to low temperature, which will affect the production of enterprises
.
Instrumentation.
Especially in the winter in the north, as the temperature drops, many instruments and meters often suffer greatly from their performance due to low temperatures
.
For example, some instruments and equipment for measuring flow and liquid level will cause inaccurate measurement due to low temperature, which will affect the production of enterprises
.
The antifreeze work of water and gas meters should be done well
Natural gas contains saturated gaseous water or even liquid water.
Continuous low-temperature weather will cause natural gas hydrate to block valves and pipelines, and the user's gas meter may freeze, making residents unable to use gas normally
.
Natural gas pipelines are prone to explosion accidents after they fail to transport gas normally
.
Therefore, it is extremely urgent to do a good job in preventing ice blockage
.
Continuous low-temperature weather will cause natural gas hydrate to block valves and pipelines, and the user's gas meter may freeze, making residents unable to use gas normally
.
Natural gas pipelines are prone to explosion accidents after they fail to transport gas normally
.
Therefore, it is extremely urgent to do a good job in preventing ice blockage
.
We know that in winter, when the measured medium is transmitted to the transmitter through the measuring pipeline , freezing, solidification, precipitation and crystallization will often occur when the ambient temperature is too low.
The ambient temperature is too low and exceeds the normal value of the instrument used.
The working temperature range directly affects the accuracy of the meter's measurement display
.
For this reason, the meter and meter measuring pipeline must be anti-freeze treatment.
The objects that need heat tracing and insulation are mainly transmitters installed in the incubator of the meter, external float type liquid level transmitters or other forms of open-air installation liquid level.
Transmission unit, pressure, differential pressure, flow and other instrument detection pipelines and measurement pipelines
.
Avoid such accidents through selection or other means
.
Transmitter The ambient temperature is too low and exceeds the normal value of the instrument used.
The working temperature range directly affects the accuracy of the meter's measurement display
.
For this reason, the meter and meter measuring pipeline must be anti-freeze treatment.
The objects that need heat tracing and insulation are mainly transmitters installed in the incubator of the meter, external float type liquid level transmitters or other forms of open-air installation liquid level.
Transmission unit, pressure, differential pressure, flow and other instrument detection pipelines and measurement pipelines
.
Avoid such accidents through selection or other means
.
Frost prevention of tap water facilities is particularly important.
Tap water meters and water supply pipes are frozen, and there is no water to open the tap, which will bring great inconvenience to our lives
.
This requires real-time monitoring of water pressure in water plants and pumping stations to keep the water pressure within a reasonable range, which can ensure that tap water is delivered to residents’ homes and prevent water pipes from bursting due to excessive water pressure
.
Tap water meters and water supply pipes are frozen, and there is no water to open the tap, which will bring great inconvenience to our lives
.
This requires real-time monitoring of water pressure in water plants and pumping stations to keep the water pressure within a reasonable range, which can ensure that tap water is delivered to residents’ homes and prevent water pipes from bursting due to excessive water pressure
.
For frozen faucets, water meters, and pipes, it is advisable to wrap a hot towel on the faucet first, then pour warm water to defrost the faucet, then unscrew the faucet, and slowly pour warm water along the faucet onto the pipe to defrost the pipe
.
If it is poured to the water meter and there is still no water flowing out, it means that the water meter is also frozen.
At this time, wrap the water meter with a hot towel and pour it with warm water to defrost the water meter
.
As a precision water meter, the water meter has its own fragility.
Therefore, when the water meter is subject to freezing ice, the measures taken should be more careful to prevent the meter from being damaged
.
If the thawed water meter is in use, if there is an obvious error indication, the editor recommends that you take it to the water meter inspection office to re-inspect and repair it to ensure normal use
.
.
If it is poured to the water meter and there is still no water flowing out, it means that the water meter is also frozen.
At this time, wrap the water meter with a hot towel and pour it with warm water to defrost the water meter
.
As a precision water meter, the water meter has its own fragility.
Therefore, when the water meter is subject to freezing ice, the measures taken should be more careful to prevent the meter from being damaged
.
If the thawed water meter is in use, if there is an obvious error indication, the editor recommends that you take it to the water meter inspection office to re-inspect and repair it to ensure normal use
.
What are the cold and warm measures for instrumentation and equipment?
First of all, according to the category and installation location of the instrument and meter, choose the instrument and meter with thermal insulation device
.
Secondly, select suitable insulation materials according to the characteristics of the instrumentation equipment, wrap the parts of the instrumentation equipment that are easy to freeze or fear freezing, and check frequently to avoid damage to the insulation material
.
.
Secondly, select suitable insulation materials according to the characteristics of the instrumentation equipment, wrap the parts of the instrumentation equipment that are easy to freeze or fear freezing, and check frequently to avoid damage to the insulation material
.
Furthermore, use pipe steam heating for heat preservation, and check whether the heat preservation pipe is unblocked in time to prevent the pipe from being blocked
.
At the same time, adjust the heat preservation steam volume according to the weather and temperature changes to prevent the temperature from being too high or too low to affect the operation of the equipment
.
In addition, the instrumentation equipment should be installed or stored in a dry place without the influence of rain or snow
.
An alarm device can be installed according to the conditions, so that problems can be found and rectified
.
.
At the same time, adjust the heat preservation steam volume according to the weather and temperature changes to prevent the temperature from being too high or too low to affect the operation of the equipment
.
In addition, the instrumentation equipment should be installed or stored in a dry place without the influence of rain or snow
.
An alarm device can be installed according to the conditions, so that problems can be found and rectified
.
Finally, equipment maintenance personnel should regularly inspect the instrumentation equipment
.
Check whether the insulation pipeline valve is normal, whether the incubator is normal, whether the electric heat tracing power supply components are normal, etc.
, carry out key inspections on the easy-to-freeze instruments and meters and make relevant records
.
At the same time, dry, complete and clean maintenance of instruments and equipment and their insulation and anti-freezing measures are carried out to solve the problems that occur on the spot in time
.
.
Check whether the insulation pipeline valve is normal, whether the incubator is normal, whether the electric heat tracing power supply components are normal, etc.
, carry out key inspections on the easy-to-freeze instruments and meters and make relevant records
.
At the same time, dry, complete and clean maintenance of instruments and equipment and their insulation and anti-freezing measures are carried out to solve the problems that occur on the spot in time
.
Concluding remarks
Instrumentation in winter should enter the work of keeping the instrument warm in advance to avoid problems with instrumentation in winter, especially in heating equipment, and adequate preparations should be made
.
.
Original title: Instrumentation suffers from cold wave "torture", warm measures must be taken
