The Development Of Frp Pipe Hydrostatic Testing Machine

Glass fiber reinforced plastic pipeline is called the FRP pipeline in English. It is widely used in many fields such as petroleum, electric power, chemical industry, city water supply, waste water processing, and so on. In order to ensure the reliability of the work of the FRP,the static water pressure test must be made.Therefore, the development of hydrostatic pressure test equipment is of great significance.The hydrostatic pressure test equipment designed of this topic is composed of the FRP sealing head, machine body, oil, water, gas path and control system.The device is sealed the advance of the first transfer mode. The pipe test diameter is from 249.9mm to 400mm, the pipe length is from 8.8m to 2m, the pressure is from 0MPa to 14MPa, the time of holding pressure time is from 0s to 1800s. They have two operating modes:manual, semi-automation。The main function of Hydrostatic equipment waterway system is to solve the glass pipe sealing and pressure; The oil system is charged to move for dynamic sealing head, the FRP location; the pneumatic system is responsible for the FRP in and out of pressure test equipment, and control valve opened or closed.The key of this issue is the sealing of the FRP both ends., The FRP sealing head of the system used such as a radial seal program: O-ring seals installed in the seal head tank, there is a certain amount of tension, when the sealing stuck his head through the FRP inside, O-ring and the FRP e diameter extrusion; pressure when under the pressure, O-ring along the radial deformation of the glass tube sealed at both ends within the compulsory round, except when the water pressure solution, O-ring automatically flexibility restitution.The control system uses a programmable logic controller (PLC) for the next-bit machine, computer control of host computer, enabling a manual, semi-automatic operation, fault alarm, automatic on the launching device. Through the installation, commissioning and actual test results shows that the entire hydraulic test equipment for the scheduled performance test data to meet design requirements.The FRP pipe hydrostatic testing machine set designed of the machines is collected with mechanism,electricity, liquid and gas. The whole structure is ompact, simple and reasonable, safe in the actual use , reliable, easy to operate, low operating cost, convenient operation, reached the domestic advanced level。...