Coalfield exploration layered water stop device

Abstract

The utility model relates to water stop device technical field discloses coalfield exploration layered water stop device for the plugging water stop of downhole water layer in the process of coalfield exploration, include: main cylinder, its top end and bottom end have first threaded male head end and first threaded groove end respectively, two lifting cavities and first rotation cavity have in the main cylinder, are provided with the plugging water stop subassembly in two lifting cavities, be provided with screw rod subassembly in the first rotation cavity, the screw rod subassembly is set up as when its rotates, can drive the plugging water stop subassembly radial expansion and closely fit in the coalfield downhole water layer, realize the plugging water stop, the utility model discloses, the top end or top end assembly of main cylinder is equipped with several extension cylinders, realize the interval between two main cylinders adjacent to each other up and down is adjusted, the distribution interval between the annular airbag on the main cylinder adjacent to each other up and down can be adjusted according to the depth of different water layer of coalfield downhole, and it is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of water-stopping devices, and in particular to a layered water-stopping device for coalfield exploration. Background Technology

[0002] Layered water-stopping devices for coalfield hydrogeological exploration refer to technical solutions for controlling and isolating water at different strata by taking specific measures and devices in coalfield hydrogeological exploration and mining to effectively prevent water surge under hydrogeological conditions.

[0003] Common mechanical compression-type layered water-stopping devices use mechanical structures (such as lead screws, cams, wedge blocks, etc.) to compress annular airbags, causing them to expand radially and fit tightly against the well wall, thus achieving layered water-stopping isolation. As shown in a layered water-stopping device for coalfield hydrogeological exploration (its authorization announcement number is: CN222879662U), this type of annular sealing rubber strips are arranged at equal intervals. However, in reality, because the depths of different water layers in coalfields are not equidistantly layered, this type of layered water-stopping device cannot achieve sealing and water-stopping at different water layer depths, making it inconvenient to use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a layered water-stopping device for coalfield exploration, which solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A layered water-stopping device for coalfield exploration, used to seal and stop water in underground water layers during coalfield exploration, including: The main cylinder has a first threaded protrusion end and a first threaded groove end at its top and bottom ends, respectively. The main cylinder has two lifting chambers and a first rotating chamber. The two lifting chambers are equipped with sealing and water-stopping components. The first rotating chamber is equipped with a screw assembly. The screw assembly is configured to drive the sealing and water-stopping components to expand radially and fit tightly against the coalfield underground water layer when it rotates, thereby achieving sealing and water-stopping. Several extension cylinders have a second threaded protrusion end and a second threaded groove end at their top and bottom ends, respectively. The first threaded protrusion end at the top of the main cylinder is threaded into the second threaded groove end at the bottom of the extension cylinder above it, thereby extending the length of the main cylinder. Several extension cylinders can be installed according to the depth of the underground water layer. A transmission component is provided inside the extension cylinder. The transmission component is configured to drive the screw assembly to rotate when it is inserted into the screw assembly.

[0006] Preferably, the second threaded protrusion at the top of the extension cylinder below the main cylinder is threaded into the first threaded groove at the bottom of the main cylinder.

[0007] Preferably, the lifting cavity is composed of a cylindrical cavity and four rectangular side openings.

[0008] Preferably, the sealing and water-stopping component includes: Two lifting plates, each consisting of a circular plate and four rectangular side blocks, are movably installed in two lifting cavities. The lifting plates are adapted to the lifting cavities. The circular plate on the lifting plate is movably installed in the cylindrical cavity of the lifting cavity, and the four rectangular side blocks on the lifting plate are movably installed in the four rectangular side openings of the lifting cavity. Two extrusion rings are fixedly installed on the outer side walls of four rectangular side blocks on two lifting plates, and both are movably sleeved on the main cylinder. The two extrusion rings have a bevel on the side that is close to each other. An annular airbag is fixedly mounted on an inclined surface on one side of two compression rings, with the outer side of the annular airbag protruding beyond the two compression rings.

[0009] Preferably, the screw assembly includes: A positioning ring is rotatably mounted within the first rotating cavity; A two-way lead screw is fixedly installed on a positioning ring. The threads at both ends of the screw have opposite directions and the threads at both ends pass through the two lifting discs respectively. The top and bottom ends of the screw have a first insertion end and a first insertion block end respectively.

[0010] Preferably, the transmission assembly includes: A fixing ring is fixedly installed on the inner wall of the extension tube, and has a second rotating cavity inside, the cross section of which is arranged in a cross shape. The transmission rod has a protruding ring on its body, which is rotatably installed in the second rotating cavity. Its top and bottom ends have a second insertion end and a second insertion block end, respectively.

[0011] Preferably, the second insert end located at the bottom of the transmission rod inside the extension cylinder above the main cylinder is inserted into the first insert end at the top of the lower bidirectional screw; the second insert end located at the top of the transmission rod inside the extension cylinder below the main cylinder is inserted into the first insert end at the bottom of the upper bidirectional screw.

[0012] The installer of this application assembles several extension cylinders at the top or top of the main cylinder to adjust the spacing between two adjacent main cylinders. This allows the distribution spacing between the annular airbags on the adjacent main cylinders to be adjusted according to the depth of different water layers in the coalfield. When performing layered water sealing, a wrench with a rectangular block head is inserted into the second insertion end at the top of the uppermost transmission rod, and the transmission rod is rotated to adjust the rotation of several bidirectional screws in the layered water sealing device. This allows several annular airbags to expand radially and fit tightly against the water layer in the coalfield, achieving water sealing. This application can seal water at different depths of water layers in the coalfield and is relatively convenient to use. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention in cross-section of the first plane; Figure 3 This is a schematic diagram of the structure of the present invention in cross-section of the second plane; Figure 4 This is a partial cross-sectional view of the structure of the extension tube after installation. Figure 5 This is a side sectional view of the structure of this utility model; Figure 6 This is a partial cross-sectional view of the structure of this utility model from an exploded perspective.

[0014] In the diagram: 100, main cylinder; 101, lifting chamber; 102, first rotating chamber; 110, first threaded protrusion end; 120, first threaded groove end; 200, sealing and water-stopping assembly; 210, lifting plate; 220, extrusion ring; 2201, inclined plane; 230, annular airbag; 300, screw assembly; 310, positioning ring; 320, bidirectional lead screw; 3201, first insertion end; 3202, first insertion block end; 400, extension cylinder; 410, second threaded protrusion end; 420, second threaded groove end; 500, transmission assembly; 510, fixing ring; 5101, second rotating chamber; 520, transmission rod; 5201, second insertion end; 5202, second insertion block end. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Common mechanical extrusion-type layered water-stopping devices feature multiple annular sealing rubber strips arranged at equal intervals. However, in reality, because different water layers in coalfields are not equidistantly spaced, this type of layered water-stopping device cannot effectively seal water at different depths, making it inconvenient to use. To solve this problem, this embodiment discloses a layered water-stopping device for coalfield exploration, used to seal and stop water in underground water layers during coalfield exploration, including: Figure 1 The main cylinder 100 and several extension cylinders 400 are shown. The height of the main cylinder 100 can be 1 meter, and the height of the extension cylinders 400 can be 0.5 meters.

[0017] like Figure 3 As shown, the top and bottom ends of the main cylinder 100 are respectively provided with a first threaded protrusion end 110 and a first threaded groove end 120. Several extension cylinders 400 are provided with a second threaded protrusion end 410 and a second threaded groove end 420 at their top and bottom ends, respectively. The first threaded protrusion end 110 at the top of the main cylinder 100 is threadedly installed in the second threaded groove end 420 at the bottom of the extension cylinder 400 above it, thereby extending the length of the main cylinder 100. Several extension cylinders 400 can be installed at both ends of the main cylinder 100 according to the depth of the underground water layer. The second threaded protrusion end 410 at the top of the extension cylinder 400 below the main cylinder 100 is threadedly installed in the first threaded groove end 120 at the bottom of the main cylinder 100.

[0018] like Figure 6 As shown, the main cylinder 100 has two lifting chambers 101. Each lifting chamber 101 is composed of a cylindrical cavity and four rectangular side openings. A sealing and water-stopping assembly 200 is installed in each of the two lifting chambers 101. The sealing and water-stopping assembly 200 includes: two lifting plates 210, two compression rings 220, and an annular airbag 230. Each lifting plate 210 is composed of a circular plate and four rectangular side blocks. The two lifting plates 210 are movably installed within two lifting chambers 101, and the lifting plates 210 are adapted to the lifting chambers 101. The circular plate on the lifting plate 210 is movably installed within the cylindrical cavity of the lifting chamber 101, and the four rectangular side blocks on the lifting plate 210 are movably installed within the four rectangular side openings of the lifting chamber 101. The two compression rings 220 are fixedly installed on the outer walls of the four rectangular side blocks on the two lifting plates 210, and are movably sleeved on the main cylinder 100. The sides of the two compression rings 220 that are close to each other each have a slope 2201. The annular airbag 230 is fixedly installed on the slope 2201 on the sides of the two compression rings 220 that are close to each other, and the outer surface of the annular airbag 230 protrudes beyond the two compression rings 220.

[0019] Continue as Figure 6As shown, the main cylinder 100 has a first rotating cavity 102, and a screw assembly 300 is provided in the first rotating cavity 102. The screw assembly 300 is configured to drive the sealing and water-stopping assembly 200 to expand radially and fit tightly against the coalfield underground water layer when it rotates, so as to achieve sealing and water-stopping. The screw assembly 300 includes: a positioning ring 310 and a bidirectional lead screw 320; the positioning ring 310 is rotatably installed in the first rotating cavity 102; the bidirectional lead screw 320 is fixedly installed on the positioning ring 310, the threads at both ends of the screw are opposite and the threads at both ends respectively pass through the outside of the two lifting discs 210, and the top and bottom ends of the screw have a first insertion end 3201 and a first insertion block end 3202 respectively.

[0020] When the adjusting double-acting screw 320 rotates, it can synchronously drive the two lifting discs 210 to slide and approach each other in the two lifting chambers 101 of the main cylinder 100, thereby driving the two extrusion rings 220 to approach each other and extrude the annular airbag 230, so that the annular airbag 230 expands radially and fits tightly against the water leakage point of the well wall in the coalfield, thereby achieving sealing and water isolation.

[0021] Continue as Figure 6 As shown, a transmission assembly 500 is provided inside the extension cylinder 400. The transmission assembly 500 is configured to drive the screw assembly 300 to rotate when it is inserted into the screw assembly 300. The transmission assembly 500 includes: a fixed ring 510 and a transmission rod 520; the fixed ring 510 is fixedly installed on the inner wall of the extension cylinder 400, and has a second rotating cavity 5101 inside, the cross section of the second rotating cavity 5101 being arranged in a cross shape; the transmission rod 520 has a protruding ring on its rod body, the protruding ring on its rod body being rotatably installed in the second rotating cavity 5101, and its top and bottom ends respectively having a second insertion end 5201 and a second insertion block end 5202; When the second threaded groove end 420 at the bottom of the extension cylinder 400 is screwed downwards onto the first threaded protrusion end 110 at the top of the main cylinder 100, the second insert end 5202 at the bottom of the transmission rod 520 inside the extension cylinder 400 is aligned with the first insertion end 3201 at the top of the bidirectional lead screw 320 inserted into the lower main cylinder 100. This prevents the transmission rod 520 from rotating during the screwing process of the extension cylinder 400, thereby preventing the bidirectional lead screw 320 inside the main cylinder 100 from rotating during the threaded connection of the extension cylinder 400 to the main cylinder 100.

[0022] Continue as Figure 6As shown, the second insert end 5202 at the bottom of the transmission rod 520 inside the extension cylinder 400 above the main cylinder 100 is inserted into the first insert end 3201 at the top of the lower bidirectional lead screw 320; the second insert end 5201 at the top of the transmission rod 520 inside the extension cylinder 400 below the main cylinder 100 is inserted into the first insert end 3202 at the bottom of the upper bidirectional lead screw 320.

[0023] The specific implementation method is as follows: After measuring the depth of different water layers in the coalfield, the installer assembles several extension cylinders 400 at the top or top of the main cylinder 100 according to the depth of different water layers. This allows for adjustment of the distance between two adjacent main cylinders 100, so that the distribution distance between the annular airbags 230 on the adjacent main cylinders 100 can be adjusted according to the depth of different water layers in the coalfield. When performing layered water sealing, the wrench head with a rectangular block head is inserted into the second insertion end 5201 at the top of the uppermost transmission rod 520, and the transmission rod 520 is rotated and adjusted. This allows for the rotation adjustment of several bidirectional screws 320 in the layered water sealing device, which simultaneously causes several annular airbags 230 to expand radially and fit tightly against the water layer in the coalfield, achieving water sealing. This application can seal and stop water at different depths of water layers in the coalfield, and is relatively convenient to use.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A layered water-stopping device for coalfield exploration, used to seal and stop water in underground water layers during coalfield exploration, characterized in that, include: The main cylinder (100) has a first threaded protrusion end (110) and a first threaded groove end (120) at its top and bottom ends, respectively. The main cylinder (100) has two lifting chambers (101) and a first rotating chamber (102). The two lifting chambers (101) are equipped with a sealing and water-stopping assembly (200), and the first rotating chamber (102) is equipped with a screw assembly (300). The screw assembly (300) is configured to drive the sealing and water-stopping assembly (200) to expand radially and fit tightly against the coalfield underground water layer when it rotates, so as to achieve sealing and water-stopping. Several extension cylinders (400) have a second threaded protrusion end (410) and a second threaded groove end (420) at their top and bottom ends, respectively. The first threaded protrusion end (110) at the top of the main cylinder (100) is threaded into the second threaded groove end (420) at the bottom of the extension cylinder (400) above it, thereby extending the length of the main cylinder (100). Several extension cylinders (400) can be installed according to the depth of the underground water layer. A transmission assembly (500) is provided inside the extension cylinder (400). The transmission assembly (500) is configured to drive the screw assembly (300) to rotate when it is inserted into the screw assembly (300).

2. The coalfield exploration layered water-stopping device according to claim 1, characterized in that, The second threaded protrusion end (410) located at the top of the extension cylinder (400) below the main cylinder (100) is threaded into the first threaded groove end (120) at the bottom of the main cylinder (100).

3. The coalfield exploration layered water-stopping device according to claim 1, characterized in that, The lifting cavity (101) consists of a cylindrical cavity and four rectangular side openings.

4. The coalfield exploration layered water-stopping device according to claim 3, characterized in that, The sealing and water-stopping component (200) includes: Two lifting plates (210) are provided. Each lifting plate (210) is composed of a circular plate and four rectangular side blocks. The two lifting plates (210) are movably installed in two lifting cavities (101) respectively. The lifting plates (210) are adapted to the lifting cavities (101). The circular plate on the lifting plate (210) is movably installed in the cylindrical cavity of the lifting cavity (101). The four rectangular side blocks on the lifting plate (210) are movably installed in the four rectangular side openings of the lifting cavity (101) respectively. Two extrusion rings (220) are fixedly installed on the outer side walls of four rectangular side blocks on two lifting plates (210), and both are movably sleeved on the main cylinder (100). The two extrusion rings (220) have inclined surfaces (2201) on the side that is close to each other. An annular airbag (230) is fixedly mounted on a slope (2201) on one side of two compression rings (220) that are close to each other, and the outer side of the annular airbag (230) protrudes out of the two compression rings (220).

5. The coalfield exploration layered water-stopping device according to claim 4, characterized in that, The screw assembly (300) includes: A positioning ring (310) is rotatably mounted in the first rotating cavity (102); A two-way lead screw (320) is fixedly installed on a positioning ring (310). The threads at both ends of the screw are opposite and the threads at both ends pass through the outside of two lifting discs (210). The top and bottom ends of the screw have a first insertion end (3201) and a first insertion block end (3202), respectively.

6. The coalfield exploration layered water-stopping device according to claim 1, characterized in that, The transmission assembly (500) includes: A fixing ring (510) is fixedly installed on the inner wall of the extension tube (400), and has a second rotating cavity (5101) inside. The cross section of the second rotating cavity (5101) is arranged in a cross shape. The transmission rod (520) has a protruding ring on its body, which is rotatably installed in the second rotating cavity (5101). Its top and bottom ends have a second insertion end (5201) and a second insertion block end (5202), respectively.

7. The coalfield exploration layered water-stopping device according to claim 6, characterized in that, The second insert end (5202) of the transmission rod (520) located at the bottom of the extension cylinder (400) above the main cylinder (100) is inserted into the first insert end (3201) at the top of the double-acting screw (320) below; The second insertion end (5201) of the transmission rod (520) located at the top of the extension cylinder (400) below the main cylinder (100) is inserted into the first insertion block end (3202) at the bottom of the upper bidirectional lead screw (320).

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