A layered water-stopping device for coalfield hydrogeological exploration

Abstract

The present invention relates to the technical field of water-stopping devices, and specifically to a stratified water-stopping device for hydrogeological exploration of coalfields, comprising a plurality of assemblies connected in series, the assemblies comprising a main body, an annular airbag being arranged on the periphery of the main body, a connecting pipe assembly being arranged through the upper and lower parts of the main body, the annular airbag and the connecting pipe assembly being connected through a hose, the connecting pipe assemblies of two upper and lower adjacent assemblies being connected at proximal ends through a detachable docking assembly, a water collecting assembly being arranged in the main body, and a water inlet of the water collecting assembly being arranged on the upper side of the main body; the required number of assemblies can be connected in series according to actual needs, and the inflation and deflation operations of the annular airbags at any position can be realized by cooperating with the rotating docking assembly and the rotating driving device, so as to meet different needs of experiments.

Description

Technical Field

[0001] The invention relates to the technical field of water-stopping devices, and in particular to a layered water-stopping device for coalfield hydrogeological exploration. Background Art

[0002] Hydrogeological drilling, referred to as hydrogeological drilling, includes percussion drilling, rotary drilling and percussion rotary drilling. Through the drilling method, pumping test is carried out to measure the permeability coefficient of the aquifer, water inflow and groundwater burial movement characteristics.

[0003] Most of the existing devices are integrated structures, which are difficult to install modularly according to specific circumstances. The distance between experimental intervals is not convenient to adjust, and it is often necessary to conduct multiple pumping experiments at different depths, which is time-consuming and cannot achieve efficient work. Summary of the invention

[0004] In order to solve the shortcomings of the prior art that most of them are integrated structures, difficult to carry out modular installation according to specific circumstances, and inconvenient to adjust the interval distance for experiments, the present invention provides a stratified water-stopping device for coalfield hydrogeological exploration.

[0005] The technical solution of the present invention is: The present invention provides a stratified water-stopping device for hydrogeological exploration of coalfields, comprising a plurality of assemblies connected in series, the assemblies comprising a main body, an annular air bag being arranged on the periphery of the main body, a connecting pipe assembly being arranged through the upper and lower parts of the main body, the annular air bag being connected to the connecting pipe assembly through a hose, the proximal ends of the connecting pipe assemblies of two upper and lower adjacent assemblies being connected through a detachable docking assembly, a water collecting assembly being arranged in the main body, and a water inlet of the water collecting assembly being arranged on the upper side of the main body.

[0006] In order to ensure the stability of the installation of the annular airbag, a positioning component is arranged on the periphery of the main body to position the annular airbag.

[0007] Preferably, the positioning component is a positioning ring provided on the outer periphery of the body to limit the annular airbag, the outer ring of the positioning ring is an inner groove, and the annular airbag is movably sleeved inside the inner groove.

[0008] In order to further improve the installation stability of the device, a plurality of telescopic fixing structures facing outwards are arranged on the outer periphery of the positioning ring.

[0009] In a preferred manner, the telescopic fixing structure comprises a first electric telescopic rod fixed to the outer periphery of a positioning ring, and the movable ends of the first electric telescopic rod are both provided with pointed ends.

[0010] Preferably, the docking assembly is a rotating docking assembly, and the connecting tube assembly is divided into an upper connecting tube and a lower connecting tube. The lower end of the upper connecting tube and the upper end of the lower connecting tube are rotationally connected and maintained in communication. The upper connecting tube is provided with a first channel and a second channel. The lower connecting tube can be driven to rotate so that its lower end can dock with the first channel or the second channel of the upper connecting tube below it through the rotating docking assembly. The upper end of the upper connecting tube on the upper side is connected to the lower end of the lifting tube through the rotating docking assembly, and the annular airbag is connected to the second channel through a hose.

[0011] Furthermore, the rotating docking assembly includes an upper docking block at the lower end of the lower connecting tube and a lower docking block at the upper end of the upper connecting tube, a first air duct is arranged in the upper docking block, an upper end of the first air duct is connected to the corresponding lower connecting tube, a lower end of the first air duct is an eccentric first air outlet, a second air duct and a third air duct are arranged in the lower docking block, upper ends of the second air duct and the third air duct are respectively eccentric first air inlet and second air inlet, the second air duct is connected to the first channel of the corresponding upper connecting tube, and the second air duct is connected to the second channel of the corresponding upper connecting tube.

[0012] Furthermore, the rotary docking assembly also includes a limiting clamp for maintaining the upper docking block and the lower docking block in docking, the limiting clamp includes a first half clamp and a second half clamp that form a complete limiting clamp, and a chamber for accommodating the rotary docking assembly is formed inside the limiting clamp.

[0013] In order to improve the installation stability of the rotary docking assembly, a number of annular threaded holes are opened at the bottom of the chamber, threaded rods are installed in the threaded holes, balls are installed on the upper ends of the threaded rods, and the balls roll with the corresponding bottom surfaces of the lower docking blocks; a blind hole is opened at the top of the threaded rod, balls are installed in the blind hole, a spring is arranged in the blind hole, the ball is arranged at the opening end of the blind hole and the inner side is against the outer end of the spring.

[0014] Furthermore, a docking ring is fixedly provided at the lower end of the first air channel, and the first air outlet is docked with the first air inlet or the second air inlet through the docking ring.

[0015] The beneficial effects achieved by the present invention are: When in use, according to actual conditions, a suitable number of assemblies are connected by rotating the docking assembly, the lower end of the lower connecting tube at the lowest side is blocked, and initially the lower connecting tube of the upper assembly is connected to the first channel of the upper connecting tube of the assembly adjacent to the lower side through the rotating docking assembly, and several assemblies connected in series are placed as a whole into the specified depth of the borehole through the lifting tube, and then the first electric telescopic rod is controlled to extend so that the tip is inserted into the side wall of the borehole, the device is positioned, and all the annular airbags are inflated from bottom to top in sequence, so that after all of them are inflated, the space between the two adjacent assemblies corresponds to the depth of the borehole. Water coming out of the side wall of the hole can be retained in this space, and water can be accumulated on the upper side of the main body of the lower assembly. At this time, the water collecting component 7 in the main body can be controlled to suck in the water on the upper side to complete the collection. By rotating the corresponding upper docking block, the second air inlet corresponding to the annular airbag at any position can be connected to the lower connecting pipe. At this time, the annular airbag can be deflated and shrunk. At this time, the distance between the two adjacent annular airbags that are in contact with the inner wall of the borehole becomes larger. Through this design, the layering distance can be adjusted without lifting the device out of the borehole, and the experiment of layered water stopping and sampling at different spacings can be completed.

[0016] The present invention can connect a required number of assemblies in series according to actual needs, and can also realize the inflation and deflation operations of the annular airbags at any position through the cooperation of the rotary docking assembly and the rotary driving device, so as to meet different needs of experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 A partial enlarged view of part I; Figure 3 is along Figure 1 A cross-sectional view of the AA line; Figure 4 It is a diagram of the internal structure of the threaded rod; Figure 5 is a cross-sectional view of the lower docking block and the upper connecting pipe; Figure 6 It is a schematic diagram of the positioning ring structure; Figure 7 yes Figure 1 A partial enlarged view of Part II. DETAILED DESCRIPTION

[0018] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0019] like Figures 1 to 7As shown, the present invention provides a stratified water-stopping device for coalfield hydrogeological exploration, including a plurality of assemblies connected in series, the assembly including a main body 1, the main body 1 is cylindrical, an annular air bag 2 is arranged on the periphery of the main body 1, the main body passes through a connecting pipe assembly 3 from top to bottom, the connecting pipe assemblies of two upper and lower adjacent assemblies are connected at proximal ends by a detachable rotating docking assembly 4, the connecting pipe assembly 3 is divided into an upper connecting pipe 301 and a lower connecting pipe 302, the lower end of the upper connecting pipe 301 and the upper end of the lower connecting pipe 302 are rotatably connected and maintained in communication, the upper connecting pipe is fixedly connected to the main body, and the lower connecting pipe is fixedly connected to the main body. The connecting tube is rotatably connected to the main body. A rotating drive device connected to the lower connecting tube is arranged in the main body 1. The lower connecting tube can be driven to rotate by the rotating drive device. A first channel 21 and a second channel 5 are arranged in the upper connecting tube. The first channel of the upper connecting tube is always connected to the lower connecting tube. The main body is provided with a hose 6 connecting the annular airbag with the second channel. When the lower connecting tube is driven to rotate, the lower end thereof can be connected to the first channel 21 or the second channel 5 of the upper connecting tube on its lower side by a rotating docking assembly 4. A water collecting assembly 7 is arranged in the main body, and a water inlet 8 of the water collecting assembly is arranged on the upper side of the main body.

[0020] The upper end of the upper connecting tube on the upper side is connected to the lower end of the pulling tube through a rotating docking assembly 4, and a detachable circuit connection module is also arranged between adjacent assemblies. This is the prior art and will not be described in detail here and is not shown in the figure.

[0021] In one embodiment, the rotary docking assembly 4 includes an upper docking block 401 at the lower end of the lower connecting tube and a lower docking block 402 at the upper end of the upper connecting tube, a first air duct 4011 is arranged in the upper docking block, the upper end of the first air duct 4011 is connected to the corresponding lower connecting tube, the lower end of the first air duct is an eccentric first air outlet, a second air duct 4021 and a third air duct 4022 are arranged in the lower docking block, the upper ends of the second air duct 4021 and the third air duct 4022 are respectively eccentric first air inlet 40211 and second air inlet 40221, the second air duct 4021 is connected to the first channel of the corresponding upper connecting tube, and the second air duct 4022 is connected to the second channel of the corresponding upper connecting tube.

[0022] The rotational docking assembly 4 also includes a limiting clamp 9 for maintaining the upper docking block and the lower docking block in docking. The limiting clamp includes a first half clamp 901 and a second half clamp 902 that form a complete limiting clamp. A chamber 10 for accommodating the rotational docking assembly 4 is formed inside the limiting clamp.

[0023] A docking ring 403 is fixedly provided at the lower end of the first air duct 4011. The docking ring is preferably made of an elastic material, such as rubber, and is fitted to the top surface of the lower docking block. When the upper docking block rotates, the first air outlet is docked with the first air inlet 40211 or the second air inlet 40221 through the docking ring 403, thereby ensuring the air tightness of the docking.

[0024] The bottom of the chamber is provided with a plurality of annular threaded holes 11, threaded rods 12 are installed in the threaded holes 11, and balls 13 are installed on the upper ends of the threaded rods 12, and the balls are rollingly matched with the bottom surfaces of the corresponding lower docking blocks.

[0025] A blind hole 14 is provided at the top of the threaded rod 12. A ball is installed in the blind hole 14. A spring 15 is arranged in the blind hole. The ball is arranged at the opening end of the blind hole and the inner side thereof abuts against the outer end of the spring.

[0026] A positioning ring 16 for limiting the annular airbag is arranged on the outer periphery of the main body 1, and the outer circle of the positioning ring 16 is an inner groove, and the annular airbag is movably sleeved inside the inner groove. The hose 6 passes through the positioning ring and is connected with the inflation head of the corresponding annular airbag. The upper and lower sides of the main body are fixedly connected to the positioning ring by a plurality of fixing plates 17 to improve the installation strength of the positioning ring. A plurality of first electric telescopic rods 18 facing outward are arranged on the outer periphery of the positioning ring, and the movable ends of the first electric telescopic rods 18 are all provided with tips 19. When in use, the first electric telescopic rod is controlled to extend so that the tip is inserted into the side wall of the borehole to fix the device. During use, the device is not easy to move, which is convenient for collecting water samples.

[0027] The water collecting assembly 7 includes a collecting tube 701, the upper end of which is connected to the water inlet 8, a piston 702 is arranged in the collecting tube, a second electric telescopic rod 703 is arranged at the lower side of the collecting tube, the movable rod of the second electric telescopic rod extends into the collecting tube and is connected with the piston 702, and a filter is arranged at the water inlet. When water accumulates on the upper side of the main body, the second electric telescopic rod is controlled to shorten and the piston is driven to move downward, so that the accumulated water on the upper side of the main body can be sucked in to complete the water collection.

[0028] One form of the rotary drive device includes a motor 20 in the body, and the output shaft of the motor is connected to the lower connecting pipe through a gear set.

[0029] like Figure 6 As shown, the positioning ring is divided into two parts, an upper part and an lower part. This design can facilitate the installation of the annular airbag.

[0030] Working principle: When in use, according to the actual situation, a suitable number of assemblies are connected through the rotating docking assembly, and the lower end of the lower connecting tube on the lowest side is blocked. Initially, the lower connecting tube of the upper assembly is connected to the first channel of the upper connecting tube of the assembly adjacent to the lower side through the rotating docking assembly. The several assemblies connected in series are placed as a whole into the specified depth of the borehole through the lifting tube, and then the first electric telescopic rod is controlled to extend so that the tip is inserted into the side wall of the borehole to position the device. Then, at this time, the rotation drive device of the second assembly from bottom to top is controlled to drive the corresponding lower connecting tube to rotate, so that the upper docking block at the lower end of the lower connecting tube rotates a certain angle, and the first air outlet of the upper docking block is docked with the second air inlet at the upper end of the third airway of the corresponding lower docking block, and the upper end of the lifting tube is connected to the air supply assembly, and the air supply assembly is pressurized to inject air into the annular airbag on the lowest side, so that the annular airbag expands to against the side wall of the borehole, and then the upper docking block is continued to be driven to rotate a certain angle. The first air outlet is aligned with the first air inlet again, that is to say, the second air inlet is closed at this time, and the annular airbag on the lowermost side is now inflated and no gas enters or exits. Similarly, the annular airbag of the third assembly from bottom to top is inflated, and so on, all the annular airbags can be inflated in sequence from bottom to top. After all of them are inflated, the water that comes out of the side wall of the borehole corresponding to the space between the two adjacent assemblies can be retained in this space, and the water can accumulate on the upper side of the main body of the lower assembly. At this time, the water collecting component 7 in this body can be controlled to suck in the water on the upper side to complete the collection, and the second air inlet corresponding to the annular airbag at any position can be connected to the lower connecting pipe by rotating the corresponding upper docking block. At this time, the annular airbag can be deflated and shrunk, and the distance between the two adjacent annular airbags that are in contact with the inner wall of the borehole becomes larger. Through this design, the layering distance can be adjusted without lifting the device out of the borehole, and the experiment of layered water stopping and sampling with different spacings can be completed.

[0031] The present invention can connect a required number of assemblies in series according to actual needs, and can also realize the inflation and deflation operations of the annular airbags at any position through the cooperation of the rotary docking assembly and the rotary driving device, so as to meet different needs of experiments.

[0032] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A layered water-stopping device for coalfield hydrogeological exploration, characterized in that: The invention comprises a plurality of assemblies connected in series, the assemblies comprising a main body, an annular airbag is arranged on the outer periphery of the main body, a connecting pipe assembly is arranged through the upper and lower parts of the main body, the annular airbag is connected to the connecting pipe assembly through a hose, the connecting pipe assemblies of two upper and lower adjacent assemblies are connected at proximal ends through a detachable docking assembly, a water collecting assembly is arranged in the main body, and a water inlet of the water collecting assembly is arranged on the upper side of the main body.

2. A layered water-stopping device for coalfield hydrogeological exploration according to claim 1, characterized in that: A positioning component having a positioning function for the annular airbag is arranged on the periphery of the body.

3. A layered water-stopping device for coalfield hydrogeological exploration according to claim 2, characterized in that: The positioning component is a positioning ring arranged on the outer periphery of the body to limit the annular airbag, the outer ring of the positioning ring is an inner groove, and the annular airbag is movably sleeved inside the inner groove.

4. A layered water-stopping device for coalfield hydrogeological exploration according to claim 3, characterized in that: A plurality of telescopic fixing structures facing outwards are arranged on the outer periphery of the positioning ring.

5. A layered water-stopping device for coalfield hydrogeological exploration according to claim 4, characterized in that: The telescopic fixing structure comprises a first electric telescopic rod fixed on the outer periphery of a positioning ring, and the movable ends of the first electric telescopic rod are both provided with pointed ends.

6. A layered water-stopping device for coalfield hydrogeological exploration according to claim 1, characterized in that: The docking assembly is a rotating docking assembly, and the connecting tube assembly is divided into an upper connecting tube and a lower connecting tube. The lower end of the upper connecting tube and the upper end of the lower connecting tube are rotationally connected and maintained in communication. The upper connecting tube is provided with a first channel and a second channel. The lower connecting tube can be driven to rotate so that its lower end can dock with the first channel or the second channel of the upper connecting tube below it through the rotating docking assembly. The upper end of the upper connecting tube on the upper side is connected to the lower end of the pulling tube through the rotating docking assembly, and the annular airbag is connected to the second channel through a hose.

7. A layered water-stopping device for coalfield hydrogeological exploration according to claim 6, characterized in that: The rotary docking assembly includes an upper docking block at the lower end of the lower connecting tube and a lower docking block at the upper end of the upper connecting tube, a first air duct is arranged in the upper docking block, an upper end of the first air duct is connected with the corresponding lower connecting tube, a lower end of the first air duct is an eccentric first air outlet, a second air duct and a third air duct are arranged in the lower docking block, upper ends of the second air duct and the third air duct are respectively eccentric first air inlet and second air inlet, the second air duct is connected with the first channel of the corresponding upper connecting tube, and the second air duct is connected with the second channel of the corresponding upper connecting tube.

8. A layered water-stopping device for coalfield hydrogeological exploration according to claim 7, characterized in that: The rotary docking assembly also includes a limiting clamp for keeping the upper docking block and the lower docking block docked. The limiting clamp includes a first half clamp and a second half clamp that form a complete limiting clamp. A chamber for accommodating the rotary docking assembly is formed inside the limiting clamp.

9. A layered water-stopping device for coalfield hydrogeological exploration according to claim 8, characterized in that: A plurality of annular threaded holes are provided at the bottom of the chamber, threaded rods are installed in the threaded holes, balls are installed at the upper ends of the threaded rods, and the balls roll with the bottom surfaces of the corresponding lower docking blocks; a blind hole is provided at the top of the threaded rod, balls are installed in the blind hole, a spring is provided in the blind hole, and the ball is provided at the opening end of the blind hole and the inner side thereof abuts against the outer end of the spring.

10. A layered water-stopping device for coalfield hydrogeological exploration according to claim 7, characterized in that: A docking ring is fixedly arranged at the lower end of the first air channel, and the first air outlet is docked with the first air inlet or the second air inlet through the docking ring.

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