[Double King Knowledge Base - Overview and Advantages of Clamp Connections]
- Clicks: 973 Release time: 2010/10/20
Clamp connection is a new type of steel pipe connection, also called groove connection, which has many advantages. The design specification of automatic sprinkler system proposes that the connection of the system piping should be connected by grooved joints or threaded and flanged joints; for pipes with a diameter equal to or greater than 100mm in the system, flanges or grooved joints should be used in sections. connection.
First, a general introduction to the clamp connection:
　　 1 , overview
Clamp connection technology, also known as clamp connection technology, has become the first technology for the connection of liquid and gas pipelines. Although this technology is developed in China later than abroad, due to its advanced technology, it is quickly adopted by the domestic market. Received. From the development in 1998 to the present, after a few years of development and application, it has gradually replaced the two traditional pipe connections of flange and welding. Not only is the technology more mature, the market is generally recognized, and it has been actively guided by national laws and regulations.
The application of the clamp connection technology makes the complicated pipe connection process simple, fast and convenient. Make pipe connection technology a big step forward.
　　 2 , introduction of clamp connection pipe fittings
The clamp connecting pipe fittings comprise two major types of products: 1 pipe joint with sealing function, rigid joint, flexible joint, mechanical tee and grooved flange; 2 pipe joint with transition function, elbow, tee, Four-way, reducer, blind plate, etc.
The groove connecting pipe joint for sealing is mainly composed of three parts: a sealing rubber ring, a clamp and a locking bolt. The rubber sealing ring located on the inner layer is placed on the outer side of the pipe to be connected, and is matched with the pre-rolled groove, and then the clamp is fastened on the outside of the rubber ring, and then fastened by two bolts. Due to the unique sealable structural design of the rubber seal ring and the clamp, the groove joint has good sealing property, and the sealing property is correspondingly enhanced as the fluid pressure in the pipe is increased.
　　 3 , the advantages of the clamp connection
　　 3.1 simple operation
The clamp connection operation is very simple, no special professional skills are required, and ordinary workers can be operated with simple training. This is because the product has a large number of fine technical parts dissolved into the finished product in a factory manner. It takes only a few minutes for a pipe connection to be connected. Zui greatly simplifies the technical difficulty of on-site operation and saves man-hours, thus stabilizing the quality of the project and improving work efficiency. This is also the overall direction of the development of installation technology.
The traditional welding and flanged pipe connection methods not only require welding workers with corresponding skills, but also time-consuming, the operation of the workers is difficult, and there is pollution of welding fume. Due to the difference in operating space and welding skills, it is difficult to achieve satisfactory results in terms of welding quality and appearance, thus affecting the overall quality of the project.
In addition, since the grooved pipe fitting is a finished product, the required operation space on the spot is small, and the installation can be truly achieved by the wall angle, and the operation difficulty is greatly reduced, thereby saving the floor space and beautifying the effect of the pipe installation.
　　 3.2 The original characteristics of the pipeline are not affected
The clamp is connected, and only one groove is extruded by the groover on the outer surface of the pipe to be connected without breaking the inner wall structure of the pipe, which is a technical advantage unique to the grooved pipe connection. If a conventional welding operation is used, many of the pipes whose inner walls have been treated with corrosion protection will be destroyed. Therefore, the specification stipulates that galvanized pipes, plastic-lined steel pipes, steel-plastic composite pipes, etc. shall not be welded or flanged, otherwise secondary treatment is required.
　　 3.3 is conducive to construction safety
With the clamp connection technology, only the cutting machine, the rolling groove machine and the button bolts are required for the loading, and the construction organization is convenient. The use of welding and flange connection requires complex power cables, cutting tools, welding machines, and oxygen and acetylene cylinders, which brings complexity to the construction organization, and there are also potential hazards of leakage and fire. . At the same time, the welding slag generated by welding and gas cutting will inevitably fall into the inside of the pipeline. It is easy to produce pipeline valve parts or even equipment blockage during use, and also pollute the water quality inside the pipeline.
In addition, welding and flange connection inevitably require long-term high-intensity aerial work, and production safety accidents are also prone to occur.
　　 3.4 system stability, easy maintenance
The clamp connection has a unique flexibility, which makes the pipeline resistant to vibration, shrinkage and expansion. Compared with welding and flange connection, the stability of the piping system is increased, which is more suitable for temperature changes, thus protecting Pipeline valve components also reduce the damage to the structural components caused by pipe stress.
Since the clamp connection operation is simple, the required operation space becomes small, which brings many convenient conditions for future maintenance. When the pipeline needs to be repaired and replaced, just loosen the two clamps to replace, rotate, and modify a section of the pipeline. No need to damage the surrounding walls, reducing maintenance time and maintenance costs.
　　 3.5 Economic Analysis
Because the clamp connection operation is simple, labor saving and time saving, it has good economic benefits. Many articles have done economic analysis, saying that "the use of clamp connection, although the price of a single accessory of the clamp is higher, but the overall efficiency of the installation of the entire pipe network is higher than the flange connection."
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