CN-121976769-A - Drilling and sealing device for water coupling acoustic wave detection

CN121976769ACN 121976769 ACN121976769 ACN 121976769ACN-121976769-A

Abstract

The invention relates to the technical field of acoustic wave detection auxiliary equipment, in particular to a drilling sealing device for water coupling acoustic wave detection, which comprises a sealing sleeve, a sealing sleeve and a sealing sleeve, wherein the sealing sleeve is used for sealing a drilling hole; the rubber tube axially penetrates through the sealing sleeve, and a central channel is formed in the rubber tube; the sealing assembly comprises an inserting sealing mechanism, a synchronous sealing mechanism and a hydraulic self-triggering auxiliary sealing mechanism, and when the hydraulic pressure in a drilling hole reaches a set threshold value, the hydraulic self-triggering auxiliary sealing mechanism can be started and further enhance the sealing effect at the central passage. The multi-stage sealing assembly is arranged, so that the pre-sealing of the cable insertion position, synchronous extrusion sealing in the expansion driving process and self-triggering auxiliary sealing under a high water pressure state are realized, and the problems that the sealing form of the traditional device is single and the cable is easy to leak are solved.

Inventors

Kong Chuiran
ZHANG HAO
LIU FENG
XING XUEYANG
DU YITENG
WANG PENGFEI
LI BO
JI XINJIAN

Assignees

山东航空学院
博兴县公路事业发展中心

Dates

Publication Date: 20260505
Application Date: 20260401

Claims (10)

1. A borehole sealing apparatus for water-coupled acoustic detection, comprising: The sealing sleeve is used for sealing the drilling hole; The rubber tube axially penetrates through the sealing sleeve, and is provided with a central channel which is used for accommodating and allowing a probe cable for sound wave detection and a water injection pipe to pass through; the expansion driving assembly comprises a driving mechanism and a transmission mechanism, wherein the driving mechanism is used for driving the transmission mechanism to move, and the transmission mechanism is used for driving the sealing sleeve to expand; The sealing assembly comprises an inserting sealing mechanism, a synchronous sealing mechanism and a hydraulic self-triggering auxiliary sealing mechanism, wherein the inserting sealing mechanism is used for sealing the inserting position of a cable when the cable is inserted into the rubber tube, the synchronous sealing mechanism is used for synchronously extruding the rubber tube to seal a central channel when the transmission mechanism moves, and the hydraulic self-triggering auxiliary sealing mechanism is used for enhancing the sealing effect of the central channel according to the water flow pressure.
2. The drilling and sealing device for detecting water-coupled sound waves is characterized in that the sealing sleeve comprises a rubber outer cylinder, a sealing cover and a back cover, the rubber outer cylinder is of a deformable structure, the middle section part of the rubber outer cylinder can expand outwards after being stressed, the diameters of the sealing cover and the back cover are the same as the diameter of the rubber outer cylinder, the sealing cover, the back cover and the rubber outer cylinder are enclosed to form a sealing structure, and the rubber pipe penetrates through the rubber outer cylinder.
3. A borehole sealing apparatus for water coupled acoustic detection as claimed in claim 1 wherein said expansion driving assembly is provided in three sets, said three sets being circumferentially disposed along a central axis of said rubber tube.
4. A borehole sealing apparatus for water coupled acoustic detection as claimed in claim 3 wherein said drive mechanism comprises a drive motor for driving said transmission mechanism in motion.
5. The device for detecting water-coupled sound waves, as set forth in claim 4, wherein the driving mechanism comprises a threaded rod, a diamond-shaped deformation frame and a pushing plate, the driving motor is connected to the threaded rod, the threaded rod is connected to the diamond-shaped deformation frame, when the driving motor drives the threaded rod to rotate, the diamond-shaped deformation frame deforms, the diamond-shaped deformation frame is connected with the pushing plate, and when the diamond-shaped deformation frame deforms, the pushing plate is driven to move.
6. A borehole sealing device for water coupled acoustic detection as claimed in claim 5 wherein said diamond-shaped deformation frame comprises four hinge supports and support rods, wherein adjacent support rods are connected with each other through the hinge supports, the hinge supports connected with said threaded rods are provided with threaded holes, said threaded rods and said threaded holes are matched with each other, when said threaded rods rotate, two hinge supports connected with said threaded rods are driven to approach or separate from each other, and one of said hinge supports and said push plate are connected with each other.
7. The device for detecting water-coupled sound waves, as set forth in claim 1, wherein the insertion sealing mechanism comprises a plurality of annular sealing films, the annular sealing films are disposed at the inlet of the rubber tube, and the plurality of annular sealing films are arranged along the axial direction of the rubber tube.
8. The borehole sealing apparatus for water-coupled acoustic detection as set forth in claim 6, wherein said synchronization sealing mechanism comprises a rubber stripper plate coupled to said hinge base for driving said rubber stripper plate and said pusher plate toward and away from each other when said threaded rod is rotated.
9. The drilling and sealing device for water-coupled acoustic wave detection is characterized in that the water pressure self-triggering auxiliary sealing mechanism comprises a rubber sleeve, an arc-shaped pressing plate, a movable rod, an adjusting cylinder and an air bag type extrusion ring, wherein the arc-shaped pressing plate is arranged on the back cover and used for protecting the arc-shaped pressing plate, the arc-shaped pressing plate is connected with the movable rod, one end of the movable rod is movably connected with the adjusting cylinder, the adjusting cylinder is connected with the air bag type extrusion ring through a pipeline, and the air bag type extrusion ring is arranged inside the rubber pipe.
10. The borehole sealing device for water-coupled acoustic detection as claimed in claim 9, wherein said balloon-type extrusion ring is composed of a plurality of arc-shaped balloons connected in series.

Description

Drilling and sealing device for water coupling acoustic wave detection Technical Field The invention relates to the technical field of acoustic wave detection auxiliary equipment, in particular to a drilling and sealing device for water coupling acoustic wave detection. Background The drilling sound wave detection technology is an important means for reasonably evaluating engineering quality in geotechnical engineering, and has wide application in the aspects of assisting lithology classification, determining rock mass weathering, loosening range and integrity, providing rock mass dynamic elastic parameters, surrounding rock classification, judging crack and leakage positions, evaluating grouting effect and the like. When drilling acoustic wave detection is carried out, a transmitting transducer and a receiving transducer need to extend into a drilling hole, in order to achieve good contact between the transducer and a hole wall, substances need to be used as couplants, and water is usually used as the couplants in a drilling method. When the drilling angle is horizontal or inclined upwards, proper water blocking measures are needed, and the common water blocking measures are to plug the drilling port with cotton yarn or cloth, but in field test, one person is needed to plug the drilling hole, one person extracts the probe and the water pipe, one person operates the instrument, the working strength is high, and the efficiency is low. Especially for deep and vertical drilling holes, the water head is large after water is filled, the hole opening pressure is high, the sealing is not compact, the problem of water flow ejection can occur, the cotton yarn or cloth filling mode is difficult to simultaneously realize instant sealing during cable insertion and high-pressure sealing after water injection, the situation of peripheral water seepage of cables is easy to occur, when the water pressure in the drilling holes fluctuates or rises, the existing passive sealing structure cannot adaptively enhance the sealing effect according to the water pressure change, the coupling pressure is difficult to maintain, and the stability and the signal to noise ratio of sound wave detection signals are seriously affected. Disclosure of Invention The invention aims to provide a drilling and sealing device for water coupling sound wave detection, so as to solve the problems in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: A borehole sealing apparatus for water-coupled acoustic detection, comprising: The sealing sleeve is used for sealing the drilling hole; The rubber tube axially penetrates through the sealing sleeve, and is provided with a central channel which is used for accommodating and allowing a probe cable for sound wave detection and a water injection pipe to pass through; the expansion driving assembly comprises a driving mechanism and a transmission mechanism, wherein the driving mechanism is used for driving the transmission mechanism to move, and the transmission mechanism is used for driving the sealing sleeve to expand; The sealing assembly comprises an inserting sealing mechanism, a synchronous sealing mechanism and a hydraulic self-triggering auxiliary sealing mechanism, wherein the inserting sealing mechanism is used for sealing the inserting position of a cable when the cable is inserted into the rubber tube, the synchronous sealing mechanism is used for synchronously extruding the rubber tube to seal a central channel when the transmission mechanism moves, and the hydraulic self-triggering auxiliary sealing mechanism is used for enhancing the sealing effect of the central channel according to the water flow pressure. Preferably, the sealing sleeve comprises a rubber outer cylinder, a sealing cover and a sealing bottom, the rubber outer cylinder is of a deformable structure, the middle section part of the rubber outer cylinder can expand outwards after being stressed, the diameters of the sealing cover and the sealing bottom are the same as those of the rubber outer cylinder, the sealing cover, the sealing bottom and the rubber outer cylinder enclose to form a sealing structure, and the rubber pipe penetrates through the rubber outer cylinder. Preferably, the expansion driving assembly is provided with three groups, and the three groups of expansion driving assemblies are circumferentially arranged along the central shaft of the rubber tube. Preferably, the driving mechanism comprises a driving motor, and the driving motor is used for driving the transmission mechanism to move. Preferably, the transmission mechanism comprises a threaded rod, a diamond deformation frame and a push plate, the driving motor is connected to the threaded rod, the threaded rod is connected to the diamond deformation frame, when the driving motor drives the threaded rod to rotate, the diamond deformation frame deforms, the diamond deformation frame is conne