Pushing device and sealing system

Abstract

The present invention relates to the field of mine geological exploration and geophysical detection technology, and discloses a pushing device and a sealing system. The pushing device includes a pushing guide rod; the pushing guide rod includes a guide rod body and a fastening structure. The guide rod body includes a first splicing unit and a second splicing unit. The fastening structure is connected to the first splicing unit and the second splicing unit, so that the first splicing unit and the second splicing unit are spliced ​​together to form a guide rod body with a hollow cavity inside. One end of the guide rod body is used to connect with a test instrument, and the hollow cavity is used to accommodate the cable of the test instrument, so that the cable extends out of the guide rod body along the axial direction of the hollow cavity. The present invention can push the test instrument to the target depth, realize cable sealing, improve the waterproof ability of the cable, avoid the influence of water on the test data, and improve the accuracy of the test results. It solves the problem in the prior art that the cables of test instruments such as sonic logging instruments affect the accuracy of the test results due to the reduction in waterproof ability.

Description

Technical Field

[0001] The present invention relates to the technical field of mine geological exploration and geophysical detection, and in particular to a pushing device and a sealing system. Background Art

[0002] In geophysical exploration, well logging instruments are commonly used in geological exploration. They detect the physical properties and chemical composition of subsurface materials and transmit the data to the surface for processing and analysis. They are used to study crustal structure, locate mineral resources and groundwater, and monitor environmental changes. Common well logging instruments include sonic logging, electrical logging, and radioactive logging. Each has different functions and applications, but all aim to provide a more accurate understanding of the subsurface.

[0003] Acoustic logging tools use the speed and time of sound wave propagation in a medium to acquire formation information. However, when acoustic signals propagate in air, they are easily affected by factors such as air density, temperature, and pressure, resulting in inaccurate measurement results. In contrast, in water, sound waves propagate relatively quickly and are less affected by environmental factors. Therefore, acoustic logging in water can yield more accurate formation information. Therefore, acoustic logging tools are typically used in a sealed water environment to ensure accurate propagation of the acoustic signal and reliable measurement results. Furthermore, a sealed water environment prevents interference from external environmental factors, such as water flow and air bubbles, during the measurement process.

[0004] In short, the sonic logging tool needs to be used in a sealed water environment to ensure the accuracy and reliability of the measurement results.

[0005] Testing instruments used in liquid environments, such as sonic logging tools, are often subject to complex application scenarios. Scratches and other issues inevitably occur with the signal and data transmission cables of these instruments during use, reducing their waterproofing capabilities and, in turn, affecting the accuracy of test results. Therefore, improving the waterproofing of cables is an urgent issue facing the industry. Summary of the Invention

[0006] The present invention provides a pushing device and a sealing system, which are used to solve the problem in the prior art that the accuracy of test results is affected by the reduced waterproof ability of cables of testing instruments such as sonic logging instruments.

[0007] The present invention provides a pushing device, comprising:

[0008] The guide rod body includes a first splicing unit and a second splicing unit;

[0009] a fastening structure connected to the first splicing unit and the second splicing unit, so that the first splicing unit and the second splicing unit are spliced ​​together to form the guide rod body having a hollow cavity therein;

[0010] One end of the guide rod body is used to be connected to a testing instrument, and the hollow cavity is used to accommodate a cable of the testing instrument, so that the cable extends out of the guide rod body along the axial direction of the hollow cavity.

[0011] According to the pushing device provided by the present invention, the fastening structure includes:

[0012] A limit clamping seat is connected to the first splicing unit; along the axial direction of the hollow cavity, the limit clamping seat is provided with a threading hole, the threading hole is located in the hollow cavity and is connected to the hollow cavity, and the threading hole has a wire passing opening on the side facing the second splicing unit;

[0013] A locking pressure plate is located in the threading hole, wherein the locking pressure plate and the threading hole are slidably matched along the axial direction of the hollow cavity and are limitedly matched along the radial direction of the hollow cavity;

[0014] A locking member, one end of which is connected to the locking pressure plate, and the other end of which is connected to the second splicing unit. The locking member is used to drive the locking pressure plate away from the first splicing unit along the radial direction of the hollow cavity to squeeze the limiting seat.

[0015] According to the pushing device provided by the present invention, the locking member includes a screw, and the locking pressure plate and the second splicing unit are fastened together by the screw.

[0016] According to the pushing device provided by the present invention, the fastening structure further includes:

[0017] A pad is located in the hollow cavity, and the second splicing unit, the pad and the locking plate are fastened together by the screws.

[0018] According to the pushing device provided by the present invention, the first splicing unit is provided with a first mounting hole, and the limiting clamping seat is provided in the first mounting hole and connected to the hole wall of the first mounting hole.

[0019] According to the pushing device provided by the present invention, the pushing guide rod includes a plurality of the fastening structures; the plurality of fastening structures are arranged at intervals along the axial direction of the hollow cavity.

[0020] According to the pushing device provided by the present invention, the pushing device further includes:

[0021] The first connecting joint is detachably connected to the end of the pushing guide rod and is used to connect the two pushing guide rods; the first connecting joint is provided with a connecting cavity along the axial direction, and the connecting cavity is communicated with the hollow cavity.

[0022] According to the pushing device provided by the present invention, the first connecting joint is plugged into and matched with the pushing guide rod, and a threaded hole is provided on the side of the first connecting joint along the radial direction of the hollow cavity, and a top screw is provided in the threaded hole, and the top screw is in contact with the side of the pushing guide rod at one end thereof.

[0023] According to the pushing device provided by the present invention, the first splicing unit includes a first guide rod body and two first guide rod heads; the two first guide rod heads are respectively connected to the two ends of the first guide rod body; the second splicing unit includes a second guide rod body and two second guide rod heads; the two second guide rod heads are respectively connected to the two ends of the second guide rod body; the fastening structure is connected to the first guide rod body and the second guide rod body, so that the first guide rod body and the second guide rod body are spliced, and the first guide rod head and the second guide rod head are spliced ​​to form the guide rod body.

[0024] The present invention also provides a sealing system, comprising a sealing device and a pushing device as described in any one of the above items; the sealing device is formed with an assembly cavity with two ends open along the axial direction, the pushing device is arranged in the assembly cavity, the pushing device and the assembly cavity are slidably matched along the axial direction, and are sealed with the inner wall of the assembly cavity.

[0025] The pushing device provided by the present invention is provided with a fastening structure connected to the first splicing unit and the second splicing unit. The fastening structure can connect the first splicing unit and the second splicing unit together, so that the first splicing unit and the second splicing unit are spliced ​​together to form a guide rod body with a hollow cavity inside. One end of the guide rod body can be connected to a test instrument to close the opening of one end of the hollow cavity. At this time, the cable of the test instrument can be accommodated in the hollow cavity, and the cable extends out of the guide rod body along the axial direction of the hollow cavity. In this way, the guide rod body can wrap the cable in the central control cavity, so that the cable is isolated from the water environment outside the guide rod body, thereby improving the waterproof ability of the cable, avoiding the influence of water on the test data, and improving the accuracy of the test results. It solves the problem in the prior art that the cable of test instruments such as sonic logging instruments affects the accuracy of the test results due to the reduction of waterproof ability.

[0026] The sealing system of the present invention includes the above-mentioned pushing device and thus has at least the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of the pushing device provided by the present invention.

[0029] Figure 2 yes Figure 1 Schematic diagram of the structure of the AA section.

[0030] Figure 3 It is a structural schematic diagram of the first splicing unit of the pushing device provided by the present invention.

[0031] Figure 4 It is a structural schematic diagram of the second splicing unit of the pushing device provided by the present invention.

[0032] Figure 5 It is a structural schematic diagram of the fastening structure of the pushing device provided by the present invention.

[0033] Figure 6 It is a structural schematic diagram of the guide rod joint of the pushing device provided by the present invention.

[0034] Figure 7 It is a schematic diagram of the assembly structure of the first connecting joint and the guide rod joint of the pushing device provided by the present invention.

[0035] Figure 8 yes Figure 7 Schematic diagram of the structure of the BB section.

[0036] Figure 9 It is a schematic diagram of the three-dimensional structure of the sealing device provided by the present invention.

[0037] Figure 10 It is a schematic cross-sectional view of the sealing device provided by the present invention.

[0038] Figure 11 yes Figure 10 Schematic diagram of the enlarged structure at point A in the middle.

[0039] Figure 12 yes Figure 10 Schematic diagram of the enlarged structure at point B in the middle.

[0040] Figure 13 It is a schematic diagram of the assembly structure of the elastic shell and the pipeline of the sealing device provided by the present invention.

[0041] Figure 14It is a schematic diagram of the three-dimensional structure of the pipeline of the sealing device provided by the present invention.

[0042] Figure 15 It is a schematic diagram of the cross-sectional structure of a pipeline of the sealing device provided by the present invention.

[0043] Figure 16 yes Figure 15 Schematic diagram of the enlarged structure at point C in the middle.

[0044] Figure 17 It is a schematic diagram of the three-dimensional structure of the sealing system provided by the present invention.

[0045] Figure 18 It is a schematic flow chart of the sealing method provided by the present invention. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0047] like Figures 1 to 8 As shown, a specific embodiment of the first aspect of the present invention provides a pushing device 20. The pushing device 20 includes a pushing guide rod 400; the pushing guide rod 400 includes a guide rod body 410 and a fastening structure 420.

[0048] The guide rod body 410 includes a first splicing unit 411 and a second splicing unit 412. A fastening structure 420 is connected to the first and second splicing units 411, 412, so that the first and second splicing units 411, 412 are spliced ​​together to form the guide rod body 410 having a hollow cavity 413 therein. One end of the guide rod body 410 is used to connect to a test instrument, and the hollow cavity 413 is used to accommodate the test instrument's cable, allowing the cable to extend out of the guide rod body 410 along the axial direction of the hollow cavity 413.

[0049] In this embodiment, a fastening structure 420 connected to the first splicing unit 411 and the second splicing unit 412 is provided. The fastening structure 420 can connect the first splicing unit 411 and the second splicing unit 412 together, so that the first splicing unit 411 and the second splicing unit 412 are spliced ​​together to form a guide rod body 410 having a hollow cavity 413 therein. One end of the guide rod body 410 can be connected to a test instrument to close one end opening of the hollow cavity 413. In this case, the cable of the test instrument can be accommodated in the hollow cavity 413, and the cable extends out of the guide rod body 410 along the axial direction of the hollow cavity 413. In this way, the guide rod body 410 can wrap the cable within the central control cavity, isolating the cable from the water environment outside the guide rod body 410, improving the cable's waterproof capability, preventing water from affecting the test data, and improving the accuracy of the test results. This solves the problem in the prior art that the cable of test instruments such as sonic logging instruments has a reduced waterproof capability, which affects the accuracy of the test results.

[0050] In addition, because the pushing device 20 of this embodiment is connected to the test instrument, the test instrument can also be pushed to the target test site through the pushing device 20, achieving the purpose of fixed-point delivery of the test instrument, further improving the accuracy of the test results.

[0051] It is understandable that the testing instrument includes but is not limited to an acoustic logging instrument. In this embodiment, the testing instrument can be used in a liquid environment, and the specific type of the testing instrument is not limited.

[0052] It is understood that the cable can be electrically connected to the computer after passing through the guide rod body 410. The cable transmits the data collected by the test instrument to the computer, and the computer can be used to store and / or process the received data.

[0053] It should be noted that the pushing device 20 of this embodiment can be used in the case where the end of the cable away from the test instrument is not connected to the computer, and can also be used in the case where the end of the cable away from the test instrument is already connected to the computer. In this case, there is no need to remove the cable from the computer to achieve cable routing and protection.

[0054] A usage process of the pushing device 20 of this embodiment includes: separating the first splicing unit 411 and the second splicing unit 412, placing the cable on the side of the first splicing unit 411 facing the second splicing unit 412, and then using the fastening structure 420 to connect the second splicing unit 412 and the first splicing unit 411 together to form a guide rod body 410 with a hollow cavity 413 inside; then, connecting the testing instrument to one end of the guide rod body 410 to close one end opening of the hollow cavity 413, and the other end of the guide rod body 410 can extend above the water surface, so that the hollow cavity 413 is completely closed, isolating the cable from water, improving the waterproof ability and environmental adaptability of the cable, and improving the accuracy of the test results.

[0055] At present, for testing instruments that need to work in a water environment, such as sonic logging instruments, one end of the cable is connected to the probe of the testing instrument, and the other end is connected to a data acquisition device such as a computer. Moreover, due to the different depths of the test rock formations, the length of the connected cable usually ranges from a few meters to tens of meters, or even hundreds of meters. If a pipe body with an integrated structure is used, it is necessary to manually insert the probe and the cable into one end of the pipe body and out from the other end. This operation method is relatively easy to operate for shorter cables, but it is less easy to operate for longer cables, inefficient, and consumes a lot of manpower and time. The guide rod body 410 formed by splicing the first splicing unit 411 and the second splicing unit 412 of the present embodiment can avoid the pipe threading operation. Whether it is for shorter cables or for longer cables, it is easy to operate and can greatly improve work efficiency.

[0056] like Figures 1 to 4As shown, in some embodiments, the first splicing unit 411 includes a first guide rod body 4111 and two first guide rod heads 4112; the two first guide rod heads 4112 are respectively connected to the two ends of the first guide rod body 4111; the second splicing unit 412 includes a second guide rod body 4121 and two second guide rod heads 4122; the two second guide rod heads 4122 are respectively connected to the two ends of the second guide rod body 4121; the fastening structure 420 is connected to the first guide rod body 4111 and the second guide rod body 4121, so that the first guide rod body 4111 and the second guide rod body 4121 are spliced, and the first guide rod head 4112 and the second guide rod head 4122 are spliced ​​to form the guide rod body 410. Specifically, the first guide rod body 4111 and the second guide rod body 4121 are spliced ​​together to form a guide rod body 414 having a hollow cavity 413 therein. The first guide rod head 4112 and the second guide rod head 4122 are spliced ​​together to form a guide rod joint 415 having a wire hole therein. The guide rod joint 415 is connected to the guide rod body 414, and the wire hole is connected to the hollow cavity 413. By providing the guide rod joint 415, the pushing guide rod 400 can be connected to the corresponding components. For example, two or more pushing guide rods 400 can be connected through the guide rod joint 415 to increase the length of the pushing device 20, thereby achieving the purpose of pushing the test instrument to the target test depth.

[0057] Furthermore, the wire hole and the hollow cavity 413 are coaxially arranged.

[0058] Furthermore, the guide rod body 414 is welded to the guide rod joint 415 . In other words, the first guide rod head 4112 is welded to the first guide rod body 4111 , and the second guide rod head 4122 is welded to the second guide rod body 4121 .

[0059] Specifically, the outer diameter of the guide rod joint 415 matches the inner diameter of the guide rod body 414 , and the guide rod joint 415 is inserted into the hollow cavity 413 of the guide rod body 414 and is welded to the guide rod body 414 .

[0060] Furthermore, the guide rod body 414 and the guide rod joint 415 can be made of different metal materials.

[0061] For example, the guide rod body 414 may be made of aluminum alloy to reduce the weight of the entire pushing device 20 ; and the guide rod joint 415 may be made of steel to ensure welding strength.

[0062] like Figure 3 and Figure 4As shown, the push guide rod 400 further includes a sealing strip (not shown in the figure), which is arranged between the first splicing surface 4113 of the first guide rod body 4111 and the second splicing surface 4123 of the second guide rod body 4121. When the fastening structure 420 connects the first splicing unit 411 and the second splicing unit 412 together, the first guide rod body 4111 and the second guide rod body 4121 squeeze the sealing strip, ensuring that the splicing portion of the guide rod body 410 has good sealing performance and preventing water from entering the hollow cavity 413 through the splicing portion.

[0063] Preferably, a mounting groove is provided in the first joint surface 4113 or the second joint surface 4123 along the axial direction, and the sealing strip is arranged in the mounting groove.

[0064] like Figure 6 As shown, further, a flange 4151 is formed on the side of the guide rod joint 415 in a radial direction; the flange 4151 divides the guide rod joint 415 into a first connecting section 4152 and a second connecting section 4153; the first connecting section 4152 is inserted into the hollow cavity 413 and is welded to the guide rod body 414; the second connecting section 4153 is used to be inserted into one end of the first connecting joint 500, and is detachably connected to the first connecting joint 500, and the other end of the first connecting joint 500 is used to be detachably connected to the first connecting section 4152 of the guide rod joint 415 of another pushing device 20.

[0065] Preferably, a first sealing ring 4154 is provided on the side of the flange 4151 facing the first connection joint 500, and the first sealing ring 4154 abuts against the first connection joint 500. In other words, when the second connection section 4153 is connected to the first connection joint 500, the first connection joint 500 squeezes the first sealing ring 4154 to improve the sealing performance.

[0066] Specifically, two first limiting bosses 4155 are formed on the side surface of one end of the second connecting section 4153 away from the first connecting section 4152, and the two first limiting bosses 4155 are symmetrically arranged; a joint limiting groove 4156 is formed between the first limiting boss 4155 and the flange 4151.

[0067] like Figure 1 、 Figure 2 、 Figure 7 and Figure 8As shown, in some embodiments, the pushing device 20 further includes a first connecting joint 500; the first connecting joint 500 is detachably connected to the end of the pushing guide rod 400 and is used to connect the two pushing guide rods 400; the first connecting joint 500 defines an axial connection cavity 510, which is in communication with the hollow cavity 413. By providing the first connecting joint 500, the number of pushing guide rods 400 can be increased or decreased according to the length of the cable, so that all cables located below the water surface are enclosed in the hollow cavity 413, while improving operability.

[0068] Furthermore, the connecting cavity 510 and the hollow cavity 413 are coaxially arranged.

[0069] like Figure 7 and Figure 8 As shown, the first connecting joint 500 is plugged into the push guide rod 400 for easy installation and removal. A threaded hole is provided on the side of the first connecting joint 500 along the radial direction of the hollow cavity 413. A top screw 530 is provided in the threaded hole. The top screw 530 is abutted against the side of the push guide rod 400 at one end thereof.

[0070] Specifically, the guide rod joint 415 is detachably connected to the first connecting joint 500, and the top screw 530 abuts against the side of the guide rod joint 415 at one end thereof to prevent the first connecting joint 500 and the pushing guide rod 400 from sliding against each other during use.

[0071] like Figure 6 As shown, specifically, the side of the guide rod joint 415 has a joint positioning hole 4157, the joint positioning hole 4157 is located in the joint limiting groove 4156, and the top screw 530 is located in the joint positioning hole 4157 and abuts against the side of the guide rod joint 415.

[0072] like Figure 7 and Figure 8 As shown, specifically, at least one second limiting boss 520 is formed at each end of the inner side wall of the first connecting joint 500, and a threaded hole is provided in the second limiting boss 520. After the guide rod joint 415 is inserted into the first connecting joint 500, the guide rod joint 415 or the first connecting joint 500 is rotated so that the second limiting boss 520 is locked in the joint limiting groove 4156 of the guide rod joint 415, thereby limiting the connection between the first connecting joint 500 and the guide rod joint 415. To prevent the two from sliding during use, a top screw 530 is provided. By adjusting the depth of the top screw 530 in the threaded hole, the guide rod joint 415 and the first connecting joint 500 are tightly connected.

[0073] Preferably, two second limiting bosses 520 are provided at one end of the first connecting joint 500. The two second limiting bosses 520 are symmetrically arranged to improve the stability of the limiting connection. After the guide rod joint 415 is inserted into the connecting cavity 510 of the first connecting joint 500, the first connecting joint 500 is rotated 90° so that the second limiting bosses 520 are retained in the joint limiting groove 4156.

[0074] In some embodiments, the pushing device 20 further includes a second connecting joint, one end of which is detachably connected to the guide rod joint 415 , and the other end of which is used for detachably connecting to the testing instrument.

[0075] It is understandable that the structures of the first connection joint 500 and the second connection joint may be the same or different.

[0076] Specifically, the structure of the portion where the second connecting joint is connected to the testing instrument is adapted to the testing instrument.

[0077] In some embodiments of the present invention, the fastening structure 420 may be, but is not limited to, a throat clamp, which is used to clamp the first splicing unit 411 and the second splicing unit 412 together to form the guide rod body 410 .

[0078] like Figures 3 to 5 As shown, in some other embodiments of the present invention, the fastening structure 420 includes a limiting seat 421 , a locking pressure plate 422 and a locking member 423 .

[0079] The limiting clamp 421 is connected to the first splicing unit 411. Axially, the limiting clamp 421 defines a threading hole 4211 located within the hollow cavity 413 and communicating with the hollow cavity 413. The threading hole 4211 has a wire opening on the side facing the second splicing unit 412. During use, a cable is inserted through the threading hole 4211 through the wire opening, and the cable extends out of the guide rod body 410 along the threading hole 4211. A locking plate 422 is located within the threading hole 4211. The locking plate 422 and the threading hole 4211 slide axially and engage radially. A locking member 423 is connected to the locking plate 422 at one end and to the second splicing unit 412 at the other end. The locking member 423 is used to drive the locking plate 422 radially away from the first splicing unit 411 to squeeze the limiting clamp 421. Specifically, the limiting clamping seat 421 is connected to the first guide rod body 4111, and the other end of the locking member 423 is connected to the second guide rod body 4121. When in use, the locking member 423 can be used to move the locking pressure plate 422 away from the first splicing unit 411. Because the locking pressure plate 422 is also radially limited by the limiting clamping seat 421, and the limiting clamping seat 421 is connected to the first guide rod body 4111, the locking pressure plate 422 drives the first guide rod body 4111 to move radially toward the second guide rod body 4121 through the limiting clamping seat 421, thereby increasing the fastening force between the first guide rod body 4111 and the second guide rod body 4121, so that the first splicing unit 411 and the second splicing unit 412 are spliced ​​to form the guide rod body 410.

[0080] Furthermore, the push guide rod 400 includes a plurality of fastening structures 420, which are spaced apart along the axial direction. By increasing the number of fastening structures 420, the fastening force can be further increased, the fastening force can be distributed as evenly as possible, and the sealing performance can be improved.

[0081] like Figure 2 and Figure 5 As shown, the locking member 423 includes a screw, and the locking pressure plate 422 is fastened to the second splicing unit 412 by the screw. Specifically, the locking pressure plate 422 is fastened to the second guide rod body 4121 by the screw. The structure is simple, cost-effective, and easy to operate.

[0082] like Figure 5 As shown, the fastening structure 420 also includes a spacer 424; the spacer 424 is located in the hollow cavity 413, and the second splicing unit 412, the spacer 424, and the locking plate 422 are fastened together by screws. Specifically, the second guide rod 4121, the spacer 424, and the locking plate 422 are fastened together by screws. The provision of the spacer 424 increases the stability and strength of the connection.

[0083] Preferably, the side of the pad 424 facing the second guide rod body 4121 is an arcuate surface. This arcuate surface acts as a position limiter, preventing the pad 424 from rotating, facilitating installation. Furthermore, the arcuate surface increases the contact area between the pad 424 and the second guide rod body 4121, reducing the contact pressure between the two, making the pad 424 less likely to deform, enhancing the strength of the contact structure, and increasing the service life of the rod body.

[0084] Furthermore, the first splicing unit 411 defines a first mounting hole (not shown), and a position-limiting bracket 421 is disposed within the first mounting hole and connected to the wall of the first mounting hole. Specifically, the first guide rod body 4111 defines a first mounting hole, and the position-limiting bracket 421 is disposed within the first mounting hole. By locating the position-limiting bracket 421 within the first mounting hole, the radial space occupied by the position-limiting bracket 421 within the hollow cavity 413 can be reduced, allowing more cables to be accommodated within the hollow cavity 413.

[0085] like Figure 5 As shown, further, the limiting holder 421 includes a bottom plate 4212 and two side plates 4213; the two side plates 4213 are radially arranged on both sides of the bottom plate 4212, and the two side plates 4213 are folded toward each other on the side away from the bottom plate 4212 to form a flange 4214, and the two flanges 4214, the two side plates 4213 and the bottom plate 4212 are surrounded to form a wire threading hole 4211 with a wire passing opening on one side.

[0086] Preferably, a side surface of the bottom plate 4212 away from the side plate 4213 is an arc-shaped surface, and the arc-shaped surface is flush with the outer side surface of the first guide rod body 4111 .

[0087] A method of using the pushing device 20 of this embodiment includes:

[0088] Use fasteners, such as screws, to connect the locking plate 422, the pad 424, and the second guide rod 4121 together;

[0089] Place the rear end cable of a testing instrument, such as an acoustic logging instrument, into the threading hole 4211 through the cable port;

[0090] Push the locking plate 422 into the threading hole 4211 from the end portion thereof away from the threading opening. The second splicing unit 412 then slides axially relative to the first splicing unit 411 until the second splicing surface 4123 of the second splicing unit 412 is aligned with the first splicing surface 4113 of the first splicing unit 411.

[0091] Tighten the screws to combine the first splicing unit 411 and the second splicing unit 412 to form the pushing guide rod 400;

[0092] One end of the pushing guide rod 400 is connected to another pushing guide rod 400 through the first connecting joint 500 to extend the length of the pushing device 20 until the length of the pushing device 20 reaches the required length.

[0093] like Figure 17 As shown, a specific embodiment of the second aspect of the present invention discloses a sealing system. The sealing system includes a sealing device 10 and a pushing device 20 according to any of the above embodiments. The sealing device 10 has an assembly cavity 101 formed axially with two open ends. The pushing device 20 is disposed in the assembly cavity 101. The pushing device 20 axially slides with the assembly cavity 101 and is sealed to the inner wall of the assembly cavity 101.

[0094] Because the sealing system of this embodiment includes the pushing device 20 of any of the above embodiments, it has at least the above advantages, which will not be described in detail here.

[0095] like Figure 17 As shown, in some embodiments, the sealing system further includes a sealing guide rod 30; the sealing guide rod 30 has a guide rod cavity therein, which is connected to the assembly cavity 101 of the pipe 100; one end of the sealing guide rod 30 is detachably connected to the proximal end of the sealing device 10, so as to push the sealing device 10 to the target depth in the borehole.

[0096] like Figures 9 to 16 As shown, in some embodiments, the sealing device 10 includes a pipe 100, an elastic shell 200 and a switch component 300;

[0097] Among them, an assembly cavity 101 with two ends open is formed inside the pipeline 100 along the axial direction of the pipeline 100; the pipe wall of the pipeline 100 is provided with a water inlet 104, a drain outlet 107, a pressure inlet 105 and a pressure discharge outlet 106; a first flow channel 102 and a second flow channel 103 are formed in the pipe wall; the first flow channel 102 and the second flow channel 103 are arranged at intervals along the axial direction of the pipeline 100; the water inlet 104 and the pressure inlet 105 are both connected to the first flow channel 102, and the drain outlet 107 and the pressure discharge outlet 106 are both connected to the second flow channel 103.

[0098] The elastic shell 200 is sleeved on the outside of the pipe 100, and the elastic shell 200 has an expanded state and a contracted state; in the expanded state, the elastic shell 200 and the pipe 100 form a water-filled gap, and at the same time, the elastic shell 200 is used to abut against the inner wall of the drilled hole to seal the drilled hole; the pressure inlet 105 connects the water-filled gap and the first flow channel 102, and the pressure discharge port 106 connects the water-filled gap and the second flow channel 103.

[0099] The switch component 300 is arranged at the drain outlet 107 and is used to open or block the drain outlet 107; when the water pressure in the water-filled gap is greater than the blocking force of the switch component 300 on the drain outlet 107, the switch component 300 opens the drain outlet 107, allowing the water in the second flow channel 103 to flow from the drain outlet 107 into the drilled hole.

[0100] In this embodiment, the sealing device 10 is provided with a pipe 100, an elastic housing 200, and a switch component 300. During use, the sealing device 10 is placed in a borehole. External water is injected through the water inlet 104. The water flows sequentially through the first flow channel 102 and the pressure inlet 105 into the water-filled gap between the elastic housing 200 and the pipe 100, causing the elastic housing 200 to transition from a contracted state to an expanded state. The expanded elastic housing 200 can then abut against the borehole wall, sealing the borehole. Simultaneously, the water flows through the pressure relief port 106 into the second flow channel 103, flowing into the drain port 107 to squeeze the switch component 300. When the water pressure within the water-filled gap, i.e., the squeezing force of the water on the switch assembly 310, exceeds the sealing force of the switch component 300 on the drain port 107, the switch component 300 is squeezed open, opening the drain port 107. Water then flows from the drain port 107 into the borehole, effectively filling the borehole with water.

[0101] When the injection of water into the water inlet 104 stops, the water in the sealing device 10 flows out from the water inlet 104 and the elastic shell 200 returns to the contracted state.

[0102] It should be noted that the drill hole in this embodiment is preferably a vertically upward drill hole, an inclined upward drill hole or a horizontal drill hole in a coal mine roadway or tunnel.

[0103] like Figure 10 and Figure 11 As shown, in this embodiment, the first flow channel 102 and the second flow channel 103 are arranged axially at intervals along the pipe 100, which means that the distal end of the first flow channel 102 and the proximal end of the second flow channel 103 are divided in the middle, that is, the distal end of the first flow channel 102 is closed and the proximal end of the second flow channel 103 is closed.

[0104] It should be noted that the distal end refers to the end of the sealing device 10 that is farther away from the operator when the borehole is sealed; the proximal end refers to the end of the sealing device 10 that is closer to the operator when the borehole is sealed.

[0105] like Figure 14 As shown, in some embodiments, a limiting groove 140 is formed on the outer side of the pipe 100 , and the elastic shell 200 is limited in the limiting groove 140 .

[0106] like Figure 14 、 Figure 15 and Figure 16As shown, in some embodiments, the pipeline 100 includes an inner tube 110 , a first outer tube 120 , and a second outer tube 130 .

[0107] The inner tube 110 has an axially open assembly cavity 101 formed within it. A first outer tube 120 is sleeved onto the outer side of the inner tube 110, forming a first flow channel 102 with the inner tube 110. A water inlet 104 and a pressure inlet 105 are formed in the wall of the first outer tube 120. A second outer tube 130 is sleeved onto the outer side of the inner tube 110, axially aligned with the first outer tube 120, forming a second flow channel 103 with the inner tube 110. A pressure outlet 106 and a water outlet 107 are formed in the wall of the second outer tube 130. The provision of the inner tube 110 allows testing instruments and the like to be inserted into the borehole. The provision of the first outer tube 120 and the second outer tube 130 facilitates the formation of the first flow channel 102 and the second flow channel 103. Compared to the integrated pipe 100, the split structure of this embodiment facilitates processing.

[0108] Specifically, the proximal end of the first outer tube 120 is welded to the inner tube 110, and the distal end of the first outer tube 120 is also welded to the inner tube 110, so that the first flow channel 102 is formed between the middle section of the first outer tube 120 and the inner tube 110. Preferably, the first flow channel 102 is an annular flow channel.

[0109] Specifically, the proximal end of the second outer tube 130 is welded to the inner tube 110, and the distal end of the second outer tube 130 is welded to the inner tube 110, so that the second flow channel 103 is formed between the middle section of the second outer tube 130 and the inner tube 110. Preferably, the second flow channel 103 is an annular flow channel.

[0110] In some embodiments, the inner tube 110 includes multiple sections of tubing that are detachably connected. When the distal end of the tubing is blocked and damaged, the proximal end of the tubing can be removed and the proximal section of the tubing can continue to be used, thereby avoiding material waste and reducing costs.

[0111] Specifically, the inner tube 110 includes a first tube body 111 and a second tube body 112. The distal end of the outer side of the first tube body 111 has an internal thread, and the proximal end of the outer side of the second tube body 112 has an external thread. The first tube body 111 and the second tube body 112 are threadedly connected through the external thread and the internal thread.

[0112] Furthermore, in order to improve the sealing effect, a first sealing ring is provided at the distal end of the external thread. When the first tube body 111 and the second tube body 112 are threadedly connected together, the first tube body 111 squeezes the first sealing ring.

[0113] Specifically, a first limiting groove 121 is formed at the proximal end of the outer side surface of the first outer tube 120 , and the first limiting groove 121 is sealedly connected to the proximal end of the elastic shell 200 .

[0114] Specifically, a limiting protrusion 131 is formed on the outer side surface of the second outer tube 130 near the pressure discharge port 106 .

[0115] Specifically, the inner sidewall of the second tube 112 is formed with a second retaining groove (not shown), which is used to accommodate a second sealing ring (not shown). When the pushing device 20 is sealed and assembled in the assembly cavity 101, the outer sidewall of the pushing device 20 squeezes the second sealing ring, improving the sealing effect.

[0116] In some embodiments, the proximal end of the elastic shell 200 is fixedly connected to the proximal end of the first outer tube 120, and the distal end of the elastic shell 200 is fixedly connected to the distal end of the second outer tube 130. Water enters the first flow channel 102 from the water inlet 104, and the water in the first flow channel 102 enters the water-filled gap between the elastic shell 200 and the pipeline 100 from the pressure inlet hole. The proximal end of the elastic shell 200 and the distal end of the elastic shell 200 are both fixed and unchanged, and the shell wall of the elastic shell 200 becomes thinner due to expansion.

[0117] In some other embodiments, the proximal end of the elastic shell 200 is fixedly connected to the proximal end of the first outer tube 120, and the distal end of the elastic shell 200 is axially slidably fitted with the distal end of the second outer tube 130. When water in the first flow channel 102 enters the water-filled gap between the elastic shell 200 and the pipeline 100 from the pressure inlet hole, the distal end of the elastic shell 200 moves toward the proximal end of the elastic shell 200, and at the same time, the elastic shell 200 expands, and the elastic shell 200 appears to be shortened and expanded.

[0118] like Figure 13 As shown, further, the elastic housing 200 includes an elastic sleeve assembly 210 and a sealing ring 220. The elastic sleeve assembly 210 is sleeved on the outside of the pipe 100, and the proximal end of the elastic sleeve assembly 210 near the water inlet 104 is connected to the pipe 100; the elastic sleeve assembly 210 has an expanded state and a contracted state. The sealing ring 220 is sleeved on the outside of the pipe 100; the distal end of the elastic sleeve assembly 210 away from the water inlet 104 is axially slidably fitted with the pipe 100 through the sealing ring 220. Specifically, the proximal end of the inner side wall of the elastic sleeve assembly 210 near the water inlet 104 is connected to the first outer tube 120, and the sealing ring 220 is sleeved on the distal end of the outer side surface of the second outer tube 130, and is axially slidably fitted with the second outer tube 130; the outer side surface of the sealing ring 220 is connected to the distal end of the inner side wall of the elastic sleeve assembly 210 away from the water inlet 104. The water in the first flow channel 102 enters the water-filled gap between the elastic sleeve assembly 210 and the pipeline 100 through the pressure inlet 105, and the elastic sleeve assembly 210 changes from a contracted state to an expanded state. At the same time, the elastic sleeve assembly 210 pulls the sealing ring 220, causing the sealing ring 220 to move toward the water inlet 104.

[0119] like Figure 11 and Figure 16 As shown, in some embodiments, a limiting protrusion 131 is formed on the outer side of the pipe 100. The limiting protrusion 131 is located between the pressure relief port 106 and the water outlet 107 and is close to the pressure relief port 106. The sealing ring 220 is limited by the limiting protrusion 131, which limits the maximum movement distance of the sealing ring 220 and prevents the sealing ring 220 from blocking the pressure relief port 106.

[0120] like Figure 13 As shown, further, the elastic sleeve assembly 210 includes an elastic sleeve 211 , a first fastener 212 and a second fastener 213 .

[0121] The elastic sleeve 211 is mounted on the exterior of the pipe 100 and has both expanded and contracted states. A first fastener 212 is provided at the proximal end of the elastic sleeve 211 to connect the elastic sleeve 211 to the pipe 100. A second fastener 213 is provided at the distal end of the elastic sleeve 211 to connect the elastic sleeve 211 to the sealing ring 220. The provision of the first fastener 212 and the second fastener 213 ensures that both the proximal and distal ends of the elastic sleeve 211 are sealed against the pipe 100.

[0122] Preferably, the first fastener 212 includes but is not limited to a clamp. Preferably, the second fastener 213 includes but is not limited to a clamp.

[0123] Furthermore, a third sealing ring 230 is provided between the sealing ring 220 and the pipe 100. The third sealing ring 230 not only improves the sealing performance between the sealing ring 220 and the pipe 100, but also reduces the contact area between the sealing ring 220 and the pipe 100, thereby lowering the sliding friction resistance. This allows the sealing ring 220 to more smoothly move the distal end of the elastic sleeve 211 toward the proximal end when the elastic sleeve 211 expands.

[0124] like Figure 10 and Figure 12 As shown, in some embodiments, the switch component 300 includes a switch assembly 310 and a pressure regulating assembly 320. The switch assembly 310 is disposed at the drain outlet 107 and is used to open or block the drain outlet 107. The pressure regulating assembly 320 is connected to the switch assembly 310 and has a blocking force, which is used to press the switch assembly 310 toward the drain outlet 107 to block the drain outlet 107. The pressure regulating assembly 320 can adjust the magnitude of the blocking force. The pressure regulating assembly 320 can not only press the switch assembly 310 toward the drain outlet 107 to block the drain outlet 107, but also adjust the maximum expansion degree of the elastic housing 200 by adjusting the blocking force, thereby adapting the elastic housing 200 to block drilled holes of different diameters.

[0125] Furthermore, the switch assembly 310 includes a sealing member 311 and a sealing gasket 312; the sealing gasket 312 is arranged around the drain outlet 107, and the sealing member 311 is connected to the pressure regulating assembly 320; when the sealing member 311 blocks the drain outlet 107, the sealing member 311 squeezes the sealing gasket 312 to improve the sealing effect and prevent water leakage from the drain outlet 107.

[0126] Furthermore, the pressure regulating assembly 320 includes an elastic member 321 and a push screw 322. The elastic member 321 is connected to the switch assembly 310. The push screw 322 is threadedly engaged with the pipe 100, and the push screw 322 presses the elastic member 321 to press the switch assembly 310 toward the drain outlet 107. By turning the push screw 322, the depth of the push screw 322 inserted into the pipe 100 is changed, thereby adjusting the elastic deformation of the elastic member 321 and, in turn, the sealing force of the pressure regulating assembly 320. This simple structure and low cost are achieved.

[0127] Optionally, the elastic member 321 includes but is not limited to a spring or a rubber block.

[0128] like Figure 18 As shown, a specific embodiment of the third aspect of the present invention provides a sealing method. The sealing method includes:

[0129] S100, placing the sealing device 10 in the drilled hole; sealingly assembling the pushing device 20 equipped with the testing instrument into the assembly cavity 101 of the sealing device 10, so that the testing instrument enters the target depth of the drilled hole.

[0130] Specifically, a drilling rig is used to drill a borehole of required diameter and depth in a tunnel or coal mine roadway in the rock mass to be tested. The borehole is usually a vertical upward borehole, an inclined upward borehole, or a horizontal borehole.

[0131] The water inlet 104 of the sealing device 10 is connected and fixed to the water pipe, and a pressure gauge is connected between the water inlet 104 and the water pipe to test the water pressure; then the sealing device 10 is placed in the drilled hole.

[0132] The testing instrument is installed on the pushing device 20 , and the pushing device 20 is sealed and assembled in the assembly cavity 101 of the sealing device 10 . The testing instrument is sent to the target depth of the drill hole through the pushing device 20 .

[0133] S200 , injecting water into the water inlet 104 to expand the elastic shell 200 until it contacts the inner wall of the borehole, and at the same time filling the borehole with water to ensure that the testing instrument is in a liquid environment.

[0134] Specifically, when the water source is turned on, water flows into the first flow channel 102 from the water inlet 104, and then enters the water-filled gap between the elastic shell 200 and the pipe 100 from the pressure inlet 105, causing the elastic shell 200 to expand while the distal end of the elastic shell 200 moves toward the proximal end until the elastic shell 200 abuts against the wall of the drilled hole to close the drilled hole.

[0135] When the water pressure in the water-filled gap is greater than the blocking force of the switch component 300, the switch component 300 opens, and the water in the second flow channel 103 enters the borehole from the drain port 107, thereby injecting water into the borehole and placing the test instrument in a sealed water environment.

[0136] The test instrument is started to collect geological rock mass information and send the geological rock mass information to the host computer; the host computer controls the memory to store the geological rock mass information.

[0137] In some embodiments, the sealing method further includes: after the test is completed, stopping the injection of water into the water inlet 104. The water in the sealing device 10 is drained, and the elastic housing 200 returns to its contracted state. The distal end of the elastic housing 200 moves toward the drain 107, causing the elastic housing 200 to extend. After the elastic housing 200 contracts and separates from the inner wall of the borehole, the sealing device 10 and the testing instrument are removed from the borehole, completing the test.

[0138] Furthermore, the testing instrument includes but is not limited to an acoustic logging instrument.

[0139] Furthermore, the sealing guide rod 30 is connected to the sealing device 10, and the sealing device 10 is pushed to the target depth of the drilling using the sealing guide rod 30; then the pushing device 20 equipped with the testing instrument is sealed and assembled in the assembly cavity 101 of the sealing device 10, so that the testing instrument enters the target depth of the drilling.

[0140] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pushing device, characterized in that: It comprises a pushing guide rod (400), wherein the pushing guide rod (400) comprises: The guide rod body (410) comprises a first splicing unit (411) and a second splicing unit (412); a fastening structure (420) connected to the first splicing unit (411) and the second splicing unit (412), so that the first splicing unit (411) and the second splicing unit (412) are spliced ​​together to form the guide rod body (410) having a hollow cavity (413) therein; One end of the guide rod body (410) is used to connect to a testing instrument, and the hollow cavity (413) is used to accommodate a cable of the testing instrument, so that the cable extends out of the guide rod body (410) along the axial direction of the hollow cavity (413); The fastening structure (420) comprises: A limiting clamp (421) is connected to the first splicing unit (411); along the axial direction of the hollow cavity (413), the limiting clamp (421) is provided with a threading hole (4211); the threading hole (4211) is located in the hollow cavity (413) and is in communication with the hollow cavity (413); the threading hole (4211) has a thread passing opening on the side facing the second splicing unit (412); A locking pressure plate (422) is located in the threading hole (4211), wherein the locking pressure plate (422) and the threading hole (4211) are slidably engaged along the axial direction of the hollow cavity (413) and are positionally engaged along the radial direction of the hollow cavity (413); A locking member (423) is connected at one end to the locking pressure plate (422) and at the other end to the second splicing unit (412), wherein the locking member (423) is used to drive the locking pressure plate (422) away from the first splicing unit (411) along the radial direction of the hollow cavity to squeeze the limiting seat (421).

2. The pushing device according to claim 1, characterized in that: The locking member (423) comprises a screw, and the locking pressure plate (422) and the second splicing unit (412) are fastened together via the screw.

3. The pushing device according to claim 2, characterized in that: The fastening structure (420) further includes: A cushion block (424) is located in the hollow cavity (413), and the second splicing unit (412), the cushion block (424) and the locking pressure plate (422) are fastened together by the screws.

4. The pushing device according to claim 1, characterized in that: The first splicing unit (411) is provided with a first mounting hole, and the position limiting holder (421) is arranged in the first mounting hole and connected to the hole wall of the first mounting hole.

5. The pushing device according to claim 1, characterized in that: The pushing guide rod (400) comprises a plurality of fastening structures (420); the plurality of fastening structures (420) are arranged at intervals along the axial direction of the hollow cavity (413).

6. The pushing device according to claim 1, characterized in that: The pushing device also includes: A first connecting joint (500) is detachably connected to the end of the pushing guide rod (400) and is used to connect the two pushing guide rods (400); the first connecting joint (500) is provided with a connecting cavity (510) along the axial direction, and the connecting cavity (510) is communicated with the hollow cavity (413).

7. The pushing device according to claim 6, characterized in that: The first connecting joint (500) is plugged into and matched with the pushing guide rod (400). A threaded hole is provided on the side of the first connecting joint (500) along the radial direction of the hollow cavity (413). A top screw (530) is provided in the threaded hole. One end of the top screw (530) faces the pushing guide rod (400) and abuts against the side of the pushing guide rod (400).

8. The pushing device according to any one of claims 1 to 7, characterized in that: The first splicing unit (411) comprises a first guide rod body (4111) and two first guide rod heads (4112); the two first guide rod heads (4112) are respectively connected to the two ends of the first guide rod body (4111); the second splicing unit (412) comprises a second guide rod body (4121) and two second guide rod heads (4122); the two second guide rod heads (4122) are respectively connected to the two ends of the second guide rod body (4121); the fastening structure (420) is connected to the first guide rod body (4111) and the second guide rod body (4121), so that the first guide rod body (4111) and the second guide rod body (4121) are spliced, and the first guide rod head (4112) and the second guide rod head (4122) are spliced, so as to form the guide rod body (410).

9. A sealing system, characterized in that: The invention comprises a sealing device (10) and a pushing device according to any one of claims 1 to 8; the sealing device (10) is formed with an assembly cavity (101) with two ends opened along the axial direction, the pushing device (20) is arranged in the assembly cavity (101), the pushing device (20) and the assembly cavity (101) are slidably matched along the axial direction of the assembly cavity (101), and are sealed and connected to the inner wall of the assembly cavity (101).

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