Stainless steel 304 square straight-through sight glass four-way flange sight glass water flow observation indicator DN100 can be used in chemical towers with high temperature, strong corrosiveness, easy poisoning, greater danger, and easy crystallization to ensure safe production.
Stainless steel 304 square straight-through sight glass is mainly composed of sight glass bottom plate, sight glass, valve components and so on. This type of valve should generally be installed horizontally in the pipeline.
In the process of urea production, in the medium and low pressure tower with sight glass, due to the high working temperature and strong corrosiveness of the liquid, it is easy to cause damage to the sight glass of the liquid level meter, deformation of the sight glass bottom plate, and the process of installing the sight glass. In, sometimes due to uneven force, it is easy to cause the sight glass to break. If it is not found in time, leakage will inevitably occur after driving, and then the entire system must be shut down for hot wash replacement. This not only brings difficulties to the long-term safe operation of the system, but also seriously affects the efficiency of urea production.
Stainless steel 304 square through sight glass
According to the characteristic of "liquid is easy to crystallize under the influence of temperature" in the urea production process, combined with the characteristics of various shut-off valves and heat preservation valves, after long-term observation, exploration and thinking, the design uses the bottom plate of the sight glass as the valve body. , Add a valve to the lower liquid inlet to control, install a sight glass level gauge on the bottom plate of the sight glass, and heat the surrounding steam to prevent the liquid from cooling and crystallizing to form a false liquid level. The bottom plate of the sight glass is welded to the tower container, and the heat of the tower body is used to increase the temperature of the bottom plate of the sight glass to further prevent liquid crystallization. If the sight glass leaks or the sight glass is damaged, the valve on the bottom plate can be closed first. This not only serves the purpose of replacing the sight glass without stopping the vehicle, but also ensures the normal production and the personal safety and working environment of the operators. Safety is also guaranteed. After the Feicheng Fertilizer Plant tested on the urea pre-distillation tower, it was successful once, and it was a blank in the field of controllable heat preservation sight glasses.
The stainless steel 304 square straight-through sight glass has the following structural characteristics:
⑴ It adopts J44W-220R DN15 high pressure stop valve form, conical surface seal, PTFE packing seal.
⑵ The valve cover and the valve body are connected by bolts, which is convenient for disassembly and assembly.
⑶ The valve clack and the valve stem are an integral structure, and the medium flow passage in the valve body is unobstructed to prevent false liquid level.
⑷ Integral valve body, double valve stem structure, reasonable appearance layout.
⑸ The valve body can pass through insulation steam, which is used as a medium for insulation to prevent liquid crystallization.
⑹ The valve body is welded to the tower container to increase the temperature of the valve body and prevent liquid crystallization for the second time.