Biogas Tanks
Biogas flare
Dehydration tank
Dehydration tank
Desulfurization tank
Geerui Membrane Structures Construction Engineering
All of Geerui membrane materials are imported anti-corrosion environmental protection special composite materials, mainly composed of high-strength tensile fiber, airtight anti-corrosion coating, surface coating, with anti-corrosion, anti-aging, anti microbial, ultraviolet and other functions, and the fire rating reaches European standards, at the same time, it has self-cleaning function. It can be widely used in various industries with high requirements, and has various properties such as low cost, low construction cost, fast installation, convenient maintenance, easy transportation, and no need for various maintenance.
Double membrane gas storage tank
Double membrane gas storage cabinet is a type of gas storage cabinet, which is further divided into integrated gas cabinets and independent gas cabinets. It mainly consists of accessories such as bottom film (floor film matching), inner film, outer film, sealing system, blown film fan, pressure protector, intelligent control cabinet, etc. Integrated double membrane gas storage tanks are mostly hemispherical, connected to enamel assembled tanks, Lip tanks, and fiberglass tanks, making them easy to install, construct, and maintain.
The outer membrane forms a spherical shape, providing protection. Even in strong winds or thunderstorms, the outer membrane can continue to bear pressure and maintain rigidity; The inner membrane surrounds the bottom membrane to form an inner cavity for storing biogas. The blown film fan automatically adjusts the inflow and outflow of gas to maintain stable air pressure inside the gas cabinet and protect the outer film under adverse weather conditions; The bottom membrane is laid flat on the foundation of the civil engineering, so that the biogas is completely sealed between the inner membrane and the bottom membrane.
Membrane gas holders, as the "new favorite" in the field of energy conservation and emission reduction, use biogas as fuel and lighting, and have become an important measure in building a green new countryside. Its unique and innovative appearance has also become the most beautiful scenery in environmental engineering.
Characteristics of Double Membrane Gas Storage Tank
High utilization rate of biogas: The gas utilization rate in ordinary solid gas tanks is generally only half, and it is generally not possible to extract all the gas. The double membrane biogas storage cabinet is made of flexible and foldable materials, which can completely press out the gas inside the tank, with a utilization rate of 100%.
Less investment: occupies less land area. As a dry gas storage system, it can be directly built on the ground and has a beautiful appearance. Long corrosion resistance and lifespan. The main components are corrosion-resistant flexible films, which do not require anti-corrosion treatment and do not require winter antifreeze. Using specialized materials, the lifespan can reach 5-20 years, and if conditions permit, PTFE material can be used with a lifespan of up to 50 years.
Automatic constant pressure outlet: The double membrane biological gas storage tank is equipped with an automatic control system, which adjusts the pressure and stabilizes its building structure by inflating or deflating the biogas membrane in the pressure regulating chamber.
High safety: The inner membrane is always in pressure equilibrium and will not leak any stored gas. Even if a small amount of gas leaks from the outer membrane, the leaked gas is only air and poses no safety threat. Equipped with both electronic and physical safety valves and overpressure alarms, there will never be any overpressure leakage issues. Equipped with various alarm systems and gas leak inspection systems.
Recyclable: Any product has a certain lifespan, and biogas engineering is no exception. In the past, biogas projects were either directly destroyed on site after being scrapped, resulting in a large amount of solid waste; Either bury it directly, occupy land resources, deteriorate the soil environment, or even cause safety accidents. Starting from the principles of industrial ecology and adhering to the principles of circular economy development, this product is designed with detachable and reinstalled devices that are easy to recycle, reduce waste, and achieve resource recycling. Lightweight, low infrastructure requirements, and low construction costs; Short installation period and low construction cost; As the top cover of the fermentation tank, it is easy to disassemble and repair; Manufacturing in the factory with quality assurance. This product is lightweight, foldable and easy to transport; The export biogas pressure is constant, the inlet/outlet biogas flow rate is large, and it has a wide range of applications.
Why do we use horizontal welding
Safety design of gas cabinet air duct
Gerui air duct design
Gree adopts an integrated air duct with the gas holder, and multiple air vents of different heights are opened inside the air duct. Creating a circulating air inside the gas cabinet reduces the accumulation of moisture at the bottom of the cabinet, ensuring that the bottom of the cabinet does not change color and is more aesthetically pleasing, while greatly improving the service life of the cabinet.
Characteristics of customized film materials for Gree
Anti corrosion, flame retardant, anti purple, anti penetration
The membrane materials used by Gree can achieve a high degree of anti-corrosion, flame retardant, anti purple, and anti-seepage effects. All gas cabinets are ensured to be in a safe state to the greatest extent possible in any harsh working environment when exposed to gas.
The ordinary welding method can easily lead to the infiltration of biogas after the welding seam of the gas holder is pressurized, and the welding equipment may have false welding during long-term operation. Therefore, we have upgraded and strengthened the traditional welding method. The first step in welding the Gerui film is to use an overlap of no less than 7cm, and after the overlap is completed, a 7cm backing weld is added to the original overlap seam. This welding process mainly plays a dual safety role in welding, effectively solving the problem of gas permeability and strengthening the overall tensile strength of the gas holder. Greatly improves the service life and effectiveness of the gas holder.
Introduction to Welding Technology
Traditional welding seams often suffer from problems such as seam opening, air leakage, and severe shrinkage. The main reasons for the above problems are due to insufficient equipment power (resulting in inability to weld firmly and prolonged welding time), poor welding cooling, difficulty in mastering the welding degree, and poor welding process and quality control.
Gree welding technology is formed through 3 processes and 2 welding steps, with strong fusion and high air tightness. The welding technology has been experimentally tested and found that the strength of the weld seam far exceeds the strength of the base material itself.
Why do we use horizontal welding
Horizontal welding seams can be said to be time-consuming and labor-intensive, with a welding volume more than twice that of traditional methods, and also have some impact on aesthetics. So why does Gree still insist on using this method? Some people say it's to save materials, but this statement is not a big mistake. It can save some materials, but the saved materials and extra processes can basically offset each other. Why bother doing this?
Firstly, a spherical gas holder is composed of many membrane sheets. After being divided, it is a leaf shaped membrane with one big and the other small. The membrane material we use has a layer of high-strength polyester fibers woven from warp and weft in the middle to achieve better physical properties.
In order to save materials, the membrane is often placed on the membrane material in a complementary manner with large and small heads. This leads to the problem that the polyester fibers of the cut film are not symmetrical with respect to the warp and weft directions of the film. After welding, there will be a difference in the angle of the fibers on the left and right sides of the welding seam, which will cause a significant difference in the expansion rate. That is to say, the left side of the weld seam has a lower expansion rate, while the right side of the weld seam has a higher expansion rate. The phenomenon of uneven force is formed, which can cause deformation of the sphere in mild cases and open the weld seam in severe cases.
