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1 ,pressure pauge: the main part of the lateral pressure device: three skeleton cylindrical cavity, the outer elastic film. There are three cavities: upper, middle, and lower. The middle cavity is the test cavity; the upper and lower cavities are connected to each other but isolated from the middle cavity and are protected. There is a water pipe in the center, which is used to drain groundwater, so that the pressure bypass device can be placed at the test depth smoothly.
2 , the water tank: mainly used for injection before the test, the test pressure is not. In order to avoid cracking, a safety valve is installed.
3 , the deformation measuring system:
( 1 ) The function of the measuring tube is to display the volume change of the pressure side device. Two scales , S and V , are set beside the measuring tube .
S ruler-engraved with a standard length, the smallest scale is 1 mm, for reading the value of the liquid level drop ( cm ) of the measuring tube caused by the expansion of the pressure bypass device .
V --The volume increase ( cm 3 ) after expansion of the pressure regulator is determined by the position of the liquid level .
( 2 ) The pressure guiding tube is made of imported nylon -11 fiber (high-pressure resistant material) , which is a pipeline for transmitting pressure.
| parameter name | Model | |||||
| PY-3 | PY-4 | PY-5 | PY-5 | |||
| 1 | Pressure meter | Outer diameter of pressure meter | Φ 60mm | Φ 74mm | ||
| Total length of pressuremeter | 800mm | 850mm | ||||
| Test section length of pressuremeter | 250mm | 210mm | ||||
| 2 | Required test drill hole diameter | 2~8mm larger than the outer diameter of the selected pressuremeter | ||||
| 3 | Cross-sectional area of measuring tube water column | 13.58cm 2 | 13.58 cm 2 | 13.58 cm 2 | 20 cm 2 | |
| 4 | The original volume of the middle cavity of the pressure divider | 638 cm 3 | 808 cm 3 | |||
| 5 | Measuring tube volume | 580 cm 3 | 580cm 3 | 580 cm 3 | 860 cm 3 | |
| 6 | Maximum pressure of test work | 2.5Mpa | 4 Mpa | 5.5 Mpa | ||
| 7 | Minimum reading of pressure gauge | 0.01Mpa | ||||
| 8 | pressure source | High pressure nitrogen cylinder | ||||
| 9 | Host size | 83 0× 36 0× 220mm | ||||
| 10 | Host weight | 28Kg | ||||
Main products:
1.Drilling rig machine, Soil testing drilling rig core drilling rig, water well drilling rig
2. Mud pump
3 AW BW AQ BQ NQ HQ PQ drill rod
4.Double core barre, triple core barrel
5 Diamond bits , core bits, PDC bits, alloy bits, surface bits, reaming shell for all models
6.DTH drill pipe and DTH hammer ;
7.rock drill pipe;
8.drag bits;
9.tricone bits ;
10.rock drilling bits (button bits,cross bits,chiesel bits)
