High Temperature Boiler Sight Glass Level Indicator For Tank Level
Glass plate level gauge is divided into three kinds: Transparent type, reflection type and sight glass type. The level gauge is mainly composed by level gauge’s body, upper valve (gas valve), lower valve (liquid valve), drain valve, insurance steel ball and so on. When the glass plate have some cracks or be damaged, the insurance steel ball will automatically stop the side valve of gas and liquid to avoid or reduce flowing. So the worker can cut off the bottom valve to handle it. This series product is stable, sealed and reliable, simple installation, which is ideal instrument for detecting for liquid level in all kinds of containers with middle or low pressure.Connecting the upper and lower flanges of this level gauge with the upper and lower flanges of the container to form a permeator, then the height of liquid can be directly seen.
Structure
The glass plate type liquid level meter is designed based on the principle of the communicator. The liquid passage formed by the glass plate and the liquid level gauge body is connected to the measured container through a flange or a taper pipe thread to form a communicator, which is observed through the glass plate. The liquid level is the same as the liquid level in the container, that is, the liquid level.
Technical parameters
| Nominal length (center to center ): | 0~300-0~2000mm |
| Recommended length: | 550, 850, 1150, 1450, 1750mm |
| Material: | Carbon steel, 304, 316L |
| Nominal pressure (MPa): | Transparent type: 2.5, 6.3; Reflection-type: 4.0; Sight glass type: 0.1, 0.6 |
| Working temperature: | 0~250℃ |
| Connection flange: | DN20 (3/4”); A,B type---HG20592; C type---HG20615-09 |
| Heating steam cube connector: | RC1/4 internal thread |
| Heating steam pressure: | ≤1.0MPa |
| Steel ball closing pressure: | ≥0.3MPa |
The needle valve at both ends of the level gauge not only functions as a stop valve, but also has the function of a check valve in the internal steel ball. When the liquid level gauge accidentally breaks and leaks, the steel ball can automatically close the liquid passage under the action of the medium pressure. To prevent the large outflow of liquid for safety protection. The level gauge can change the material of the part or add some ancillary parts to achieve anti-corrosion, thermal insulation, anti-frost, lighting and other functions. Widely used in petroleum, chemical industry, electric power, metallurgy, medicine and other fields.
Workshop and Processing
Certificate
Tips for installation
1. During installation, in order to ensure the function of automatic sealing, the liquid in the container must have a certain pressure, at least more than 0.2MPa. When the upper and lower valves are opened, the valve stem quitting cannot be less than four turns. When the steel ball seals the door, it does not hit the top of the valve stem to avoid damage.
2. In the process of transportation and unpacking, we must be careful not to encounter something harder to avoid breaking the glass plate.
3. Also pay attention to the specifications and models, cannot install the wrong gauge level gauge, some media on the leveler is limited, such as some of the glass or steel plate corrosive media cannot be used.
4. Other maintenance clean, wash and install with the glass tube level gauge is similar
| 1. | Install according to the diagram, and keep the water and steam road unobstructed during use to prevent false water level; |
| 2. | When the boiler needs to remove the water level gauge for maintenance during operation, first close the water and steam valves, then remove the upper valve joint bolts as shown in the figure, and then loosen the lower valve nut to remove the water level gauge; |
| 3. | The gaskets, sealing bushes, sight glasses, etc. on the water level gauge will be worn, corroded and aging after long-term use, and should be changed at an appropriate time; |
| 4. | If the light source of the water level gauge is not bright, check whether the circuit, ballast, transformer and lamp tube are in poor contact or damaged. If it cannot be eliminated, remove the side cover and temporarily attach a light source for use. revert to original. |
