Mica components B69H-16-W is a key component of boiler water level gauge in power plant. It is mainly composed of mica sheet, graphite pad, aluminosilicate glass, buffer pad, monel alloy pad and protective belt. Mica sheet is the core component, which has the characteristics of transparency, high temperature resistance and corrosion resistance, and can clearly display the water level change. Graphite pad and monel alloy pad ensure that the assembly maintains good sealing performance under high temperature and high-pressure environment to prevent steam or water leakage. Aluminosilicate glass provides additional protection and support, while buffer pad and protective belt further enhance the stability and durability of the assembly.

Working principle

Mica components B69H-16-W is connected to the steam side and water side of the boiler drum through steam and water valves to form a communicating vessel structure. According to the communicating vessel principle, the water level in the water level gauge is consistent with the water level in the boiler drum. Using the principle of optical refraction, through the red and green glass and cold light source, the operator can intuitively observe the clear red and green boundaries in the water level gauge, so as to accurately judge the boiler water level. This design not only improves the accuracy of water level monitoring, but also enhances the convenience of operation.

Technical parameters

- Nominal pressure: 16MPa

- Interface form: welding, flange connection

- Temperature: saturation temperature

- Center distance: 535mm-1270mm

- Visible length: 380mm-800mm

- Light source: light-emitting diode, halogen tungsten lamp, flat light lamp

- Power transformer: input 220V, output 35V, 40V, 45V, power 600W, 1200W

Product advantages

Mica components B69H-16-W has many advantages. Its meter body bolt drilling and wire cutting process, combined with plane fine grinding technology, ensures the high-precision fit between the meter body and the pressure plate plane, effectively preventing leakage. The design of two rows of compensation windows and offset windows eliminates the blind spot problem of traditional mica two-color water level gauges, making water level observation more continuous and accurate. Through the principle of optical refraction, the operator can clearly observe the accurate water level value at any time in front of the water level gauge. In addition, the cold light source used in the component has a long service life and reduces maintenance costs. The use of three waterproof lines on the meter body and special sealing materials further enhances the sealing performance, extends the product life, and reduces the work intensity of maintenance personnel.

Installation and maintenance precautions

When installing the Mica components B69H-16-W, pay attention to the following points. First, the boiler pipeline should be blown before installation to prevent impurities from entering the water level gauge and causing accidents. Secondly, when installing the mica sheet, ensure that it is placed correctly and tighten the screws in the pressure plate step by step in four times according to the specified torque to ensure uniform force and close fit. In addition, the graphite pad should be installed according to the large and small faces to ensure the sealing effect. During use, the sealing of the component and the cleanliness of the mica sheet should be checked regularly. If the mica sheet is found to be scaled, you can try to close the steam valve, open the water valve to raise the water level inside the meter to the top, and then open the drain valve to rinse it repeatedly 4-5 times. If the rinse is not clean, the mica component needs to be replaced.

Application Scope

Mica components B69H-16-W is widely used in the observation hole of the high-temperature and high-pressure steam boiler water level gauge in thermal power plants. Its transparency, high temperature resistance, and corrosion resistance enable it to maintain stable performance in harsh working environments. In addition, this component can also be used for water (liquid) level monitoring in industries such as refineries and chemical plants, providing protection for the safe operation of a variety of industrial equipment.

In short, the Mica components B69H-16-W has become an ideal choice in the field of boiler water level gauges in power plants with its excellent performance and reliable quality. By accurately monitoring the boiler water level, it provides strong support for the stable and safe operation of power production. In practical applications, the correct installation, use and maintenance of this component can ensure that it remains in the best condition in long-term operation, and escort the safety and efficiency of industrial production.

By the way, we have been supplying spare parts for power plants around the world for 20 years, and we have rich experience and hope to be of service to you. Looking forward to hearing from you. My contact information is as follows:

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