What are the requirements for the installation of Single Sphere rubber expansion joint in building fire protection systems?


The single-sphere limit rubber soft joint is installed in the fire pump room. First, it can absorb shock, which is for the needs of thermal expansion and contraction, and the third is to facilitate the disassembly and assembly of valves and maintenance needs;

What are the requirements for installing a single ball limit rubber soft joint?

Pre-installation requirements:

1. The installation of special single-sphere limit rubber soft joints for fire protection, soft joints, size and pressure in kilograms, flange specifications and bolt positions should meet the design requirements. When installing the single ball limit rubber soft joint, the accessories should be complete, avoid contact with sharp metal instruments, so as not to puncture the rubber ball of the pipe fitting. Use elastic brackets when installing, and tighten the bolts diagonally. If the pressure of the pipeline passing through the single ball limit rubber soft joint is too high, use limit bolts to connect the flanges at both ends together, and the connection of the pump unit inlet should generally be installed on the top and parallel to prevent the gas in the pipeline from accumulating at the pump port;

2. It is forbidden to install at the limit of displacement, keep away from the heat source, and it is strictly forbidden to use the non-conforming product medium connector for installation. The steering of the power unit should be consistent with the steering of the fire pump. When the shaft power of the fire pump is greater than 17KW, it shall be implemented according to the design requirements when required by the technical documents, and shall not be clearly specified. The foundation should be installed with JGD-D type rubber shear vibration isolator. The fire pump room should be built separately. The rubber joints produced by the Single Sphere rubber expansion joint are made of natural and synthetic rubber, etc., and the rubber joints produced have a certain service life. It is also necessary to keep away from things containing strong acids and alkalis outside of cool and dry places, and regularly maintain the working environment of the fire pump room.

3. The normal suitable medium for rubber joints is ordinary water with a temperature of 0-60°C. For special media such as oil, acid and alkali, high temperature and other corrosive and hard textures, the corresponding special-resistant material rubber joints should be selected. Can be used blindly or universally. When the rubber soft joint is used at the inlet and outlet of the pump, it should be located on the side of the water spring, and a metal reducing joint should be installed between the water spring and the large diameter source of the reducing diameter.

Knowledge about building fire protection system: rubber joints are often used in various water supply systems, and the performance requirements of rubber joints themselves are relatively high. The material formula of rubber joints has strict requirements. Building fire protection systems mainly include indoor and outdoor fire hydrant systems and water spray The design of the sprinkler system is based on the construction regulations and height regulations, and the design specifications of the water-returning sprinkler system. According to the building nature, area, building height and building purpose, it stipulates the setting location and setting requirements. The system is mainly composed of fire pool, fire pump, fire hydrant, wet alarm valve group, sprinkler, water flow indicator, pressure switch, hydraulic alarm bell and corresponding automatic alarm system.