A hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device
A technology of horizontal orientation and engineering geology, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve the problems of uneven driving force variation, test failure, easy entanglement, etc., and achieve the effect of meeting the requirements of engineering survey
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Embodiment 1
[0028] Please refer to figure 1 , 2 , 3 and 4, the embodiments of the present invention provide a hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device suitable for a single plug state, including an inner pipe 1 , an outer pipe 2 and a plug 3 .
[0029] Specifically, the inner pipe 1 is a hollow pipe body structure with a closed front end. Here, the front end of the inner pipe 1 is provided with a pressure relief valve 17 , and the front end of the inner pipe 1 is sealed by the pressure relief valve 17 . The function of the pressure valve 17 is to prevent the water pressure in the drill pipe and the inner pipe from being too large, which will cause damage to the device. The rear end of the inner pipe 1 is provided with an inner pipe water port 7 , and the inner pipe water port 7 penetrates the outer wall of the inner pipe 1 . The outer wall of the front end of the inner pipe 1 is provided with a high pressure closing...
Embodiment 2
[0056] Also, please refer to Figure 5 , the embodiment of the present invention provides a hydraulically driven horizontal directional drilling engineering geological survey pressurized water test device suitable for the double-plug state. On the basis of the device, the drill pipe 4 and the outer pipe 2 are also connected in series with a continuation outer pipe 22 with the same structure as the outer pipe 2 and a continuation inner pipe 21 with the same structure as the inner pipe 1 . , the surface of the continuous outer tube 22 is provided with a plug 3, and the connection between the front end of the continuous outer tube 22 and the rear end of the continuous inner tube 21 is the same as the connection between the front end of the outer tube 2 and the rear end of the inner tube 1 The connection method is the same;
[0057] The cone 19 includes an inner cone 24 and an outer cone 23 , the rope 20 is connected to the inner cone 24 , and the inner cone 24 is arranged inside...
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