Technical details of hydrostatic test machine on concrete pipes
1. Test pressure: from 0 up to 1.4 bar maximum.
2. Minimum pipe ID: 600 mm; Maximum pipe ID: 3700 mm
3. Maximum water filled pipe weight: 32046.84kgf
4. Length of pipe: ID 600-3100 mm, the length of pipe is 3013 mm; ID 3200-3700 mm, the length of the pipe is 2513 mm
5. Distance between the two testing plates: 1250-3650mm
6. Maximum pipe OD: 4440mm
7. Quantity of rubber plates: 2 pcs
8. Tested pipe pieces: two halves pipes only at the same time
9. Capacity of hydraulic cylinder for deflection test: 12 tons
10. Computer controlled
11. Power supply: 415 V; 50 Hz
Computer controlled operation sequences of hydrostatic test machine
The operating sequences are as follows:
1. Switch on computer controlled system; put the following technical parameters into the computer: a) diameter of testing concrete pipe; b) testing pressure; c) testing time etc.
2. When the pipe is lifted onto the supporting table, the pushing oil cylinder will go up or down through oil cylinder for lifting manually in order to be at the center of the pipe. Then computer will start the second working procedure (the solenoid valve of pushing oil cylinder will be switched on), the testing plate will be pushed forward to seal off the two ends of the concrete pipe.
3. The computer will start the third working procedure; switch on the solenoid valve of water filling, start water filling pump to fill water inside the concrete pipe. When air evacuation valve has effluent water, the pipe has been filled water fully. Then, water filling pump, solenoid valves for both water filling and air evacuation will be switched off automatically.
4. The computer will start the fourth working procedure; switch on solenoid valve of pressure testing, start the pressure pump to increase pressure; when the pressure has been raised to the testing pressure rating, pressure pump and solenoid valve of pressure testing is to be switched off automatically. After keeping concrete pipe under the pressure for some minutes and if there is zero pressure leakage occurred, the test is passed; then green light will be illuminated; and if the test is failed, the red light will be illuminated. Then a test report will be printed automatically.
5. The computer will start the fifth working procedure; the water will be drained to the tank automatically; then the testing plate will be moved backward automatically, then the supports of supporting table will move to right direction to let the pipe off the fixed testing plate; after that, the supporting table will move out of the test machine to complete this hydrostatic test.
