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Fire foam tank foam proportioning device Capsule - A foam proportioning device, foam cans, automati by zyzy wang
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Fire foam tank foam proportioning device Capsule - A foam proportioning device, foam cans, automati by ZYZY WANG
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| Article Posted: 02/10/2011 |
| Article Views: 131 |
| Articles Written: 2301 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 790 |
| Article Votes: 0 |
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Fire foam tank foam proportioning device Capsule - A foam proportioning device, foam cans, automati |
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Business,Business News,Business Opportunities
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This paper introduces the pressurized membrane type foam proportioning device design, foam filling, the system application should pay attention to the problem, made a number of unique experiences and recommendations.
Keywords: foam proportioning device, capsule, foam liquid cans, split mix
Foam proportioning device is Foam System, a very important and critical components. Whether its design and application of appropriate, directly related to the foam fire extinguishing systems and fire extinguishing effect of the success or failure. Pressure membrane type foam proportioning device from the foam tank and foam proportioner solution of two parts, to achieve the bubble liquid storage and foam proportioning two functions into one. Because of its compact structure, convenient installation, easy maintenance, small footprint, foam can be used repeatedly for easy system commissioning and routine testing and so on, more and more by the design units and users of all ages, has gradually become fixed foam fire extinguishing system the product of choice.
Present, the domestic production of pressurized membrane type foam proportioning device manufacturers are many different manufacturers vary in product design; the same time, domestic pressure membrane type foam proportioning unit is also a lot of engineering applications, the actual installation process in the installation of all engineering design requirements are also different. Thus, in the design and engineering often use the process on some improper. The following will discuss some problems as follows:
A foam solution shall be in strict accordance with manufacturers to provide canned filling procedures.
Pressure membrane type foam proportioning unit bubble liquid filling most of the project installation site in general by the manufacturer or on-site professional person filling the guide, and to strictly follow procedures. This is because the storage of multi-bubble liquid capsule thickness is 1 ~ 2mm of rubber adhesion formation, one side under pressure and tension strength is poor. If the liquid in the filling process of foam improper operation can easily lead to damaged capsule tear. According to statistics project example, about 70% of the capsule is due to foam damage caused by improper filling. Seriously, once the capsule is damaged, it will directly lead to paralysis of the foam fire extinguishing systems, if not timely detection of serious consequences.
Foam filling should adhere to the principle that, in the filling process, the force should be avoided capsules side. Filling process will normally be broadly divided into four steps: injection Air irrigation fluid leak.
Refers to tanks and capsule filling sandwich is filled with water, their effects are mainly two: First, drain the air interlayer in order to avoid the pressure is high in the air by the compression of the capsule form of external pressure on the local gas drum and cracked; Second, the filling bubbles in the liquid capsule can be suspended in the water, inside and outside the capsule wall by the liquid pressure at the same time, avoid the bubble caused by such factors as the gravity liquid capsule at the top Flange Junction by pulling and tearing. Therefore, water is essential to the process of bubble liquid filling an important step.
Leak is through the water to exert the appropriate pressure laminated to check whether the capsules had been damaged. The main purpose is to ensure that the bubble in the liquid before filling capsule is intact, to avoid damage to the capsule has been filling the bubble liquid and waste. If it is not long to buy new equipment for the first time the bubble liquid filling, as capsules are generally just before leaving the factory leak test done, this step can be omitted as appropriate. However, if it is already used to fill the second device, or a longer time to purchase the equipment for the first time filling should be carried out strictly in accordance with the steps leak.
Inflation is the appropriate pressure point Capsule filling the appropriate volume of nitrogen or air. The main role of two; first use of gas will be softened capsule to prevent the capsule local bonding is beneficial to the bubble liquid filling the second is the formation of the capsule at the top of the volume of local air suspension so that the bubble liquid capsule filling process affordable enough buoyancy capsule flange to avoid excessive force. Air is also a very important step, in general, all should be procedures. When filling the scene inflatable difficult and no pre-conditions for leak detection step, inflation can be omitted as appropriate. I am an expert from China Chemicals Products, usually analyzes all kind of industries situation, such as canes with seats , folding walking canes.
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