Core Tip: The measures taken usually include: selection, heat retention, maintenance (point inspection, sewage). Let me give you a brief introduction!

First, the selection measures

Choose the type of insulation device. According to the type of use of the instrument and the geographical location to be installed, the insulation and antifreeze requirements of the instrument are proposed and submitted to the manufacturer for processing.

In some places in the north, the temperature difference between day and night is too large, and it can reach more than -20 degrees at night. If it is solved from the selection, the price/performance ratio is quite large.

Second, insulation measures

Keep warm with insulation material, that is, use insulation material to wrap the parts that are easy to freeze or freeze. In winter, it is necessary to inspect and regularly discharge the sewage to prevent damage to the insulation material of the package.

Third, heating measures

1, steam heating measures

That is to use tube steam heating insulation. Before the steam is supplied in winter, check whether the steam insulation pipe is unblocked or blocked. The best steam is 24 hours, not too hot, and sometimes adjust the steam supply according to the temperature change to prevent the temperature from being too high, so that the condensate vaporization in the pressure tube of the transmitter affects the operation of the transmitter or the temperature. Too low makes the transmitter condensate in the pressure tube of the transmitter to affect the smooth operation of the transmitter.

2, insulation protection box measures

a. The electric heating tube heat insulation box is composed of three parts: the box body, the heater and the instrument bracket. The structure is the same as that of the protection box. The difference is that the box is equipped with an electric heating device, and the structure is as shown in the figure. The electric heating device is composed of an electric heating tube and a temperature controller. The side of the box is equipped with a socket. When the power is turned on and the box is heated to the required temperature, the temperature controller is turned on to continue the heating. The temperature inside the tank can be kept within a certain range by repeated work. The main parameters of its constant temperature heater:

(1) Rated voltage 200V.50Hz

(2) rated power 300 ~ 500W

(3) Control temperature can be customized by the user

(4) The thermostat heater can also be made explosion-proof

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

b. Steam tube heat insulation box, the heat pipe is made of metal tube S-shaped structure. The upper and lower sides of the box are welded by welding-type joints and heat pipes. The heat pipes are installed in the box for upward and downward, and the steam is passed through. The circulation in the lumen is achieved for heating purposes. The heat tracing tube material is generally divided into two types, namely, a copper tube and a seamless steel tube (carbon steel).

c. Add a layer of thermal insulation cotton to the key instrument box, and add rubber seal at the door of the incubator and the inlet and outlet pipelines to achieve better insulation and antifreeze effect of the instrument system.

3, electric heating belt measures

Electric heat insulation technology is a new type of heating technology that directly converts electrical energy into heat. Install insulation cable, wrap the heating cable around the meter, or stick it inside the instrument cabinet (but pay attention to the length of the heating cable used, it should be economical).

Applicable to the heating, antifreeze and heat preservation of pipes, valves and pump bodies or the single-phase constant-power electric heating of the instrument pipeline process temperature. The heat per unit length is constant, the output power is not changed by the ambient temperature, and the length and power are used. In proportion, it can be arbitrarily spliced ​​during installation, but must have a heating section (ie at least 2.5m). The outer braid has heat transfer and heat dissipation, and can be used as a safety ground for anti-static. It is mainly used for anti-freezing and heat preservation of various pipes and instruments, and the maximum temperature is maintained at 150 °C. Note: Heat and heat retention of liquid lines with tight temperature control (with temperature controller).

There is also a product on the market, which is a soft heat-insulating protective sleeve for flexible packaging. It is specially used for instrumentation with small space and heat-expanding. It is mainly installed in the pressure pipe section and valve of the instrument.

Fourth, maintenance measures

1. Installation measures Reasonable choice of installation location: dry, no rain and snow dripping.

2. When the inspection measures are met, the special person shall daily confirm whether the insulation material is damaged or whether the steam pipeline is blocked or not.

3, the alarm measures can be added to the sound leakage alarm device in the state of steam leakage or power failure, in order to facilitate the discovery and timely remediation of hidden dangers of insulation and antifreeze measures.

4. The inspection measures shall be patrolled by the responsible person of the regional instrument maintenance according to the scheduled inspection route. During the inspection, it is necessary to check whether the insulation pipeline valve is normal, whether the insulation tank is normal, whether the hydrophobic device is normal, whether the insulation material packaging is intact, and whether the electric heating supply component is normal. Focus on the inspection of the easy-to-freeze instrument and make a good inspection record. Carry out the instrument, its heat preservation and antifreeze measures for dry, complete and clean maintenance, and timely solve the problem of heat preservation and heat generation happening on site.

Concerned about surprises

Label: How to do the instrument protection winter protection measures

Previous: How to choose the skill and use of Yuba Next: Introduction of X62W horizontal universal milling machine

Crystal Wax Plating

Guangdong Giant Fluorine Energy Saving Technology Co.,Ltd , https://www.tuwtech.com