Balance container

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Balance container is a kind of structure is clever, the steam drum water level measurement device ca…

Products overview:

ZW - EP seriesBalance containerUnder normal conditions, the boiler steam drum water level cannot be directly measured, so much the out pipe measurement method is adopted.But the disease is out pipe and drum temperature difference is big, so the difference in the density of water and steam drum, resulting in certain error of measurement.With double chamber container because it was in the process of work, saturated steam condensation heat in the room, for positive pressure compensation heat pipe and pressure compensation, enough protective layer and outer layer.Reduce the heat loss, make the temperature inside the container temperature close to the drum.

Second, the working principle:

ZW - EP series balance container is by the positive pressure expansion pipe, water cup, funnel, etc. Parts are welded together.Because working process, the saturated steam condensation and the heat release and the positive pressure compensation pipe and negative pressure pipe heating, and the outer layer of insulation to reduce heat loss, so that the positive pressure compensation tube water severely under any conditions are approximately equal to the steam drum (or pressured container) in the inland waters severely;And as the right to choose the height of the pipe pressure compensation, regardless of container of pressure change, positive pressure compensation pipe pressure and negative pressure of pressure change values are equal, so double chamber output differential pressure is constant, the lower the water level is constant water level indicator.Once the water level change, the output of differential pressure changes, so the low water level indicator can be real-time display container of water.

Applicable occasions:

ZW - EP series balance container with water level indicator or differential pressure transmitter, can be in normal operation of boiler and, in the process of the furnace and circumstances, to monitor the drum water level, and external changes the output level of differential pressure (AP) signal, and ensure the safe operation of the boiler.

Four, the main features:

Advantages:

1 small measurement deviation;

2 signal stability, followed in a timely manner, timely feedback of real water level in steam drum;

3 long service life.

Disadvantages:

1 are greatly influenced by the environment, than the water temperature is not uniform, not real-time quantitative calibration;

2 in winter and summer, light during the day, had a greater influence on the environment such as wind;

3 only guarantee than the water temperature constant, can achieve the measurement result.

Five, the product model and use scope:

Six, debugging steps:

1. The system doesn't work (boiler drum level is zero) : on the premise of ensure the pressure chamber full of condensed water, close the balance valve and open the valve of plus or minus, open the valve of liquid double room at the same time. The output should be to 20 ma, and full scale. The output will be dispatched to 4 ma, and the negative transfer of zero to 100% range.

2. The system is working (steam boiler liquid level) : on the premise of ensure the pressure chamber full of condensed water, close the balance valve and open the valve of plus or minus, close valve of liquid double room at the same time.

3. Measurement system normal work, three sets of valve status: balancing valve closed;The positive and negative phase valve opens. Double room open valve of liquid.

Seven, note:

1, the boiler steam drum center distance of steam pipe should be the same;

2, and the stress level of boiler drum should be the same;

3, connected to the boiler steam drum flange dimensions or welding interface specification should;

Before 4, note: this installation must be conducted for boiler pipe blowing, prevent debris from getting into, and serious accidents.

5, the soda interface respectively with lateral welding drum isolation valve, to ensure its vertical installation.Due to the double room is heavier, so need at the bottom of the channel steel support, and the bearing surface should be smooth.In order to prevent the equipment due to thermal expansion displacement and damage.

6, double chamber drain pipe should be separate to steam drum water cycle zui fast drop tube (near hydrophobic ShuiGuanChu add globe valves), the vertical length should be greater than 10 m, in order to make sure no water without time.Take time to occur such as turning down the globe valve opening.The line do not heat preservation.

7, double chamber pressure take pressure pipeline should be in a horizontal direction after lead to 1 m laying down, to ensure the water temperature is equal to the ambient temperature of selecting pressure tube.

8, once installed, the soda sampling sampling pipe, valve, pipe, cylinder should be tested for insulation treatment, cylinder at the top do not do heat preservation.

9, led to the differential pressure transmitter of two should be parallel to the pipeline laying, common heat preservation, need to add heating antifreeze and according to the scene.Add steam with heat pipe should be pressure tube and isolation.In case of guide water vaporization pressure tube affect measuring result.

Eight, when placing order, please provide the following parameters:

1, model specifications;ZW - EP;

2, the name of the measured medium, medium density: if you don't know the density, can tell us the name of the medium.

3, instrument measuring range: can also be referred to as the nominal length, namely the center distance of two flanges;

4, work stress: zui high pressure;

5, working temperature: high and low temperature measuring liquid;

6, material requirements: the liquid material.

After-sales service commitment:

Level 1, I companies sell products within twelve months appear quality problem, is responsible for free maintenance.

2, the warranty period, any quality problems such as the products of our company, my company is responsible for free repair or replacement.

3, the warranty period, such as user improper use, damaged products, my company is responsible for the maintenance, charge damage parts cost.

4, after the warranty period appear quality problem, my company is responsible for the maintenance, charge damage parts cost.

5, such as user need to my company site services, to users in the province I company service personnel to reach the site within 12 hours, fujian association of foreign languages and user reach the site within 48 hours.