Application scope of Wanbo membrane gas storage tank system;
Store various neutral gases, such as biogas, air, carbon dioxide and oxygen.
The structure of Wanbo membrane gas storage tank system consists of double-membrane biological gas storage tanks, mainly consisting of basement membrane (except integrated gas storage tank), inner membrane, outer membrane, constant pressure control cabinet, safety protector, some control equipment and auxiliary materials. Equipment composition (see figure for details). Basement membrane: it is mainly used for foundation sealing to achieve anti-corrosion and impermeability that traditional infrastructure cannot achieve.
Intima: isolate the stored gas from the outer membrane pressure regulating gas.
Outer membrane: form a surge chamber to make the inner membrane suitable for constant pressure gas output and protect the inner membrane. The outer membrane connects the edge of the inner membrane with the bottom membrane or the mouth of the fermentor. As the shell of the gas holder, it protects the inner membrane and keeps the pressure in the cabinet constant. Principle: The bottom membrane and the outer membrane together form a closed gas storage space. When the stored gas increases, the control device releases the conditioned air to vacate a certain capacity. When the gas stored in the inner membrane decreases, the control equipment injects pressure-regulating air to balance the pressure in the cabinet and stabilize the stiffness of the outer membrane. In order not to mix the gases, the stored gases are separated from the conditioned air through the inner membrane.
Manufacturing technology of Wanbo thin film gas storage tank system
The basement membrane, inner membrane and outer membrane are designed by special laminating software according to various shapes and specifications, and then processed by large-scale heat sealing machine in dust-proof workshop. Large-scale equipment thermally synthesizes the separated diaphragms into a whole, which ensures the high requirement of air tightness of heat-sealed joints, and at the same time makes the life of heat-sealed joints the same as that of materials, thus ensuring durability.
We should pay special attention to the fact that the function of the inner membrane is to isolate the pressure regulating gas and the stored gas, so in order to ensure the sealing performance of the inner membrane, our inner membrane can be sealed more effectively by welding with a unique patented technology (five processes).
Establishment of Wanbo Film Gas Storage Tank System
The foundation is generally reinforced concrete, and its mechanical properties should meet the design index. According to the design, pipes and connecting flanges are embedded under the foundation. The edge is embedded with a steel connecting ring, as shown in the figure.
The safe life gas holder material of Wanbo membrane gas holder system has the functions of methane corrosion resistance, ultraviolet resistance and anti-microorganism. The normal service life is more than 10-25 years, and there is no need for anti-corrosion treatment during this period; All metal joints are made of stainless steel, which is enough to resist the corrosive environment of the gas holder. The air tightness of the anti-leakage safety material of Wanbo membrane gas storage tank system conforms to our company's standards and European standards; The inner membrane adopts five processes (patented technology) to treat the weld, and the air tightness, physical characteristics and service life of the weld are not lower than that of the main material; There are three kinds of pressure protection methods for the outer membrane, namely, conventional electronic control and standby physical pressure relief in case of failure to ensure that the pressure is controlled within a safe range. The design pressure of environmental protection and safety gas holder in Wanbo film gas holder system is 2KP, which is much higher than the maximum wind pressure in general areas (the wind pressure of 10 wind is about 0.5kp). Lightning protection requires another lightning protection device. Explosion-proof safety of electrical appliances used in Wanbo film gas storage tank system According to GB50058- 1992, Class D explosion-proof electrical equipment is adopted in Zone 2. The special leak detector is used to check the safety of the gas holder in Wanbo film gas storage tank system. The gas holder of Wanbo membrane gas storage tank system shall conform to the standard Q/57463500-5.01-2011.
Installation of Wanbo membrane gas storage tank system: (Note: all joints are sealed by hard sealing principle).
1. First, check the position and surface flatness of foundation embedded parts. If it is uneven, it needs to be leveled. Check whether various connection points are qualified.
2. Place the upper platen according to the position.
3. Spread the basement membrane on the foundation. There are several flange connection points on the basement membrane. Align each point with the foundation embedded flange, and fix it on the flange after punching (when installing the membrane, the installer shall not wear sharp objects, and must take off his shoes or wear rubber-soled shoes to enter).
4. Place the intima on the installed basement membrane and the adventitia on the placed intima, and be careful not to scratch or damage the intima. Spread the boundary between intima and adventitia evenly on the embedded parts (manual alignment is required), check the dimensional deviation and make some adjustments.
5. Spread the rubber sealing strip on the embedded parts of the base, and stick the sealing strip interface firmly with flexible special adhesive.
6. After the positions are aligned, punch the basement membrane, inner membrane and outer membrane together. When drilling, first drill both ends of the pressure plate, fix the diaphragm, then drill, and then fix the bolt.
7. Install a constant pressure gas pipeline. The distance between the constant pressure control cabinet and the tank body should be greater than10m, otherwise an explosion-proof air pump should be used. Connect the voltage stabilizing system and the detection system (this section will be installed by professionals, without specific introduction).
8. Install the safety valve. If it is a water seal, add antifreeze at the marked position.
9. Start the system.
10. Check whether the inner and outer membranes are filled with air. Apply leak detection liquid evenly on the joint to check whether there is air leakage. If there is air leakage, check and deal with it.
Working principle of pressure control of Wanbo thin film gas storage tank system
When the biogas pressure in the tank is low, the pressure sensor provides a signal to the system. After analyzing the capacity, the system controls the air pump to inject air into the surge chamber. Under pressure, the inner membrane moves downward to squeeze biogas, so that the pressure of biogas increases, and gas injection is stopped when the set pressure is reached.
When the pressure in the tank exceeds the set value, the pressure sensor provides a signal to the system. After analyzing the volume, the system controls the electromagnetic pressure relief valve to start and exhaust the air in the buffer room to stretch the inner membrane and balance the biogas pressure. If the contents of the tank are saturated, the alarm will be selected and the excess biogas will be discharged from the safety valve.