Schneider instrumentation winter insulation measures

The methods adopted usually are: selection, thermal insulation and heat tracing, protection (point inspection, sewage discharge) and so on.

Selection method

Choose the appearance of the type with insulation equipment. According to the category and use of the appearance and the geographical location of the proposed equipment, the insulation and antifreeze requirements of the appearance are proposed, and then submitted to the manufacturer for processing.

In the north, the temperature difference between day and night is too large, and it can be reached at night - more than 20 degrees, if it is dealt with from the selection, it is quite cost-effective. And pick

Schneider instrumentation winter insulation measures

Schneider instrumentation winter insulation measures

Insulation method

Heat preservation with insulation materials, that is, use insulation materials to wrap the parts that are easy to freeze or afraid of freezing on the outside. In winter, it is necessary to check and discharge sewage frequently to avoid damage to the insulation material of the packaging.

Heat tracing methods

1. Steam heating method

That is, use the pipe steam heating to keep warm. Before insulating steam in winter, check whether the steam insulation pipeline is unblocked or blocked. * Good steam is 24 hours a day, not too hot, sometimes according to the weather temperature change to adjust the amount of heat to keep warm, in order to avoid the temperature is too high to make the condensate in the transmitter impulse tube vaporize and affect the transmitter operation or because the temperature is too low to make the condensate in the transmitter impulse tube freeze and affect the smooth operation of the transmitter.

2. Thermal insulation protection box method

a, electric heating pipe heating incubator, by the box, heater, the appearance of the bracket and other three parts, its structure and the same as the protection box, the difference is that the box is equipped with electrical heating equipment, the structure is as shown in the figure, the electric heating equipment is composed of electric heating pipe, temperature controller, the box is equipped with a socket, when the power is connected, the box is heated to the required temperature, and then the temperature controller is connected to the power supply to continue to heat up. After repeated operations, the temperature in the box can be kept within a certain range. The main parameters of its thermostatic heater:

(1) Additional voltage 200V.50Hz

(2) Extra power 300-500W

(3) The control temperature can be set by the user

(4) The thermostatic heater can also be made into explosion-proof type

(5) There are three kinds of electric heating pipe materials: copper pipe, carbon steel pipe and stainless steel pipe.

b. Steam pipe heating incubator, the heat tracing pipe is made of metal pipe into an S-shaped structure. The upper and lower parts of the box are welded with welded plate joints and heat tracing pipes, and the heat tracing pipe equipment is discharged in the box for progress, and the heating intention is reached through the circulation of steam in the pipe cavity. Heat trace pipe materials are generally divided into two types, namely copper pipes and seamless steel pipes (carbon steel).

c. Add another layer of insulation cotton to the key surface box, and add glue and seal at the door of the incubator and the inlet and outlet of the pipeline, which can reach the surface system for better insulation and antifreeze effect.

3. Electric heating belt method

Electric heat tracing and heat preservation technology is a new type of heating technology that is directly converted from electrical energy to heat energy. Add insulated cables, wrap the heat trace around the surface, or glue it to the inside of the exterior cabinet (but pay attention to the length of the heat trace used, it should be economical and moderate).

It is suitable for heating, anti-freezing and heat preservation of pipelines, valves, pumps or single-phase constant power electric belt to maintain the process temperature of the surface pipeline, the calorific value per unit length is stable, the output power is not changed by the change of ambient temperature, the length of use is proportional to the power, and it can be spliced arbitrarily when the equipment is used, but a heating joint (that is, at least 2.5m) must be retained, and the outer braid layer has the effect of heat transfer and heat dissipation, which can be used as a safe grounding for anti-static. It is mainly used for anti-freezing and thermal insulation of various pipes and appearances, with a high holding temperature of 150 °C. Note: Heating and insulation of liquid lines with strict temperature control requirements (temperature controller required).

There is also a product on the market, which is the electric heat tracing protective sleeve of flexible packaging, which is specially used for the appearance of heat tracing and explosion-proof with a relatively narrow space, and the main equipment is at the impulse pipe section and valve on the surface.

Protection

1. Equipment method Reasonable selection of equipment address: dry, no rain and snow dripping locality.

2. Spot check method When conditions permit, a special person shall confirm and dispose of the skills of whether the insulation materials are damaged and whether the steam pipelines are blocked.

3. Alarm method Conditionally, it can be installed with sound and light alarm equipment in the state of steam leakage or power failure, so as to facilitate the discovery and timely rectification of the danger of thermal insulation and anti-freezing methods.

4. Inspection methods The person responsible for the protection of the appearance of the area shall inspect on time according to the predetermined inspection route. During the inspection, it is necessary to check whether the insulation pipeline valve is normal, whether the incubator is normal, whether the hydrophobic equipment is normal, whether the packaging of thermal insulation materials is complete, and whether the electric heating power supply components are normal. Focus on the appearance of the freezing-prone equipment and make inspection records, carry out dry, complete and clean protection and maintenance of the appearance and its thermal insulation and anti-freezing methods, and deal with the thermal insulation and heating problems generated on the site in a timely manner.

Schneider instrumentation winter insulation measures

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