A deep hole sealing pressure measuring device

Abstract

The present application provides a deep hole sealing pressure measuring device, comprising a tube body, a pressure measuring assembly and a mucus adding component, the tube body is used to be accommodated in the deep hole; the pressure measuring assembly is connected to the tube body; the pressure measuring assembly comprises a pressure measuring end, a first branch pipe and a bursting valve; the first branch pipe is in the tube body; one end of the first branch pipe is connected to the pressure measuring end, and the other end is connected to the bursting valve; the bursting valve is at the end of the tube body, and the bursting valve is in an open state when it reaches a preset pressure. The pressure measuring end is used to detect the air pressure of the deep hole. At this time, the pressure measuring end detects the air pressure of the deep hole only when the bursting valve is in an open state, and the pressure measuring end detects the internal air pressure of the first branch pipe when the bursting valve is in a closed state, so as to detect the sealing of the first branch pipe during the connection process. In addition, the mucus adding component is arranged on one side of the pressure measuring assembly; the mucus tank is connected to the tube body and outputs mucus to the tube body, and the mucus fills the internal space of the tube body.

Description

Technical Field

[0001] The present application belongs to the technical field of sealing pressure measuring devices, and in particular relates to a deep hole sealing pressure measuring device. Background Art

[0002] As coal mining depths continue to increase, coal seam gas content continues to rise. Building on the development and application of domestic underground directional drilling technology, the in-depth development of "hole-in-place-lane" regional gas control technology has led to the in-depth development of this technology. This technology uses kilometer-long drilling rigs to construct directional ultra-deep boreholes in the top and bottom rock layers, replacing through-layer drilling for high and bottom extraction lanes. This, combined with regional gas extraction evaluation technology that uses ultra-deep borehole sealing and gas pressure measurement, can save significant time and money in gas control and prediction, generating significant economic benefits. The introduction of this "hole-in-place-lane" regional gas control technology has effectively addressed this engineering challenge, not only resolving the issues of large gas control workload and high costs for sudden outburst elimination, but also significantly shortening the gas control cycle and improving coal mining efficiency.

[0003] Coalbed gas pressure, the gas pressure of gas in a coal seam, is formed by free gas. It is the most fundamental parameter for coalbed gas flow and outburst, an indicator of coalbed gas content, and one of the driving forces behind gas outbursts. It is a fundamental parameter that determines coalbed gas content and its dynamic characteristics. Accurately measuring coalbed gas pressure is a key basis for evaluating gas reserves, outburst volume, and flow rate. It is crucial for formulating appropriate gas prevention and control measures in mines and predicting the risk of coal and gas outbursts. To support the "hole-replacing-tunnel" regional gas control technology, measuring gas content at the bottom of ultra-deep boreholes requires a sealing device that can effectively seal the bottom of ultra-deep boreholes. Existing sealing pressure measuring devices maintain a permanent open first branch pipe, with the pressure measuring end connected to the first branch pipe to measure gas pressure. However, the long length of the first branch pipe in the deep borehole affects the pressure measurement at the pressure measuring end. Therefore, existing sealing pressure measuring devices cannot fully verify the sealing of the first branch pipe during the connection process. Summary of the Invention

[0004] The embodiment of the present application provides a deep hole sealing pressure measuring device to solve the technical problem that the existing sealing pressure measuring device cannot simultaneously detect the sealing performance of the first branch pipe during the connection process.

[0005] In a first aspect, an embodiment of the present application provides a deep hole sealing pressure measuring device, comprising:

[0006] The tube body is used to be accommodated in the deep hole; the tube body includes a plurality of tube sections, and the plurality of tube sections are connected along the axial direction;

[0007] A pressure measuring assembly is connected to the pipe body; the pressure measuring assembly includes a pressure measuring end, a first branch pipe, and a bursting valve; the first branch pipe is located within the pipe body; one end of the first branch pipe is connected to the pressure measuring end, and the other end is connected to the bursting valve; the bursting valve is located at the end of the pipe body, and is in an open state when it reaches a preset pressure. The pressure measuring end is used to detect the air pressure in the enclosed space of the deep hole;

[0008] A mucus adding component is arranged on one side of the pressure measuring assembly; the mucus adding component includes a mucus tank, a first expansion capsule module, and a second expansion capsule module; the mucus tank is connected to the tube body and outputs mucus to the tube body, the mucus fills the internal space of the tube body and penetrates into the first expansion capsule module and the second expansion capsule module, so that the first expansion capsule module and the second expansion capsule module are both in an expanded state and seal the outer wall of the tube body and the inner wall of the deep hole.

[0009] Optionally, the first branch pipe has multiple sections, and each section of the first branch pipe is connected to the corresponding section pipe, and is connected to each other along with the connection between the section pipes.

[0010] Optionally, a plurality of first branch pipes connected to each other are provided between the pressure measuring end and the bursting valve;

[0011] When the multiple sections of the first branch pipe are in a connected state, the burst valve is in a closed state, and the pressure measuring end is used to detect the air pressure value between the multiple sections of the first branch pipe.

[0012] Optionally, the tube body is provided with an inner cavity, the first branch tube is passed through the tube body and is located in the inner cavity, a first mucus space is formed between the outer wall of the first branch tube and the inner wall of the inner cavity, and the mucus output through the mucus tank flows into the first mucus space.

[0013] Optionally, a cover plate is provided in the tube body, the cover plate is close to the end of the tube body and blocks the first mucus space; the cover plate is provided with an air hole and a float, and the float is pushed by the mucus to block the air hole.

[0014] Optionally, the first expansion capsule module is arranged on the rear side of the second expansion capsule module; the first expansion capsule module and the second expansion capsule module are both connected to the tube body;

[0015] The tube body is provided with two first drainage holes, which are respectively connected to the first expansion capsule module and the second expansion capsule module. The mucus enters the first expansion capsule module and the second expansion capsule module through the first drainage holes.

[0016] Optionally, both the first expansion capsule module and the second expansion capsule module include:

[0017] a capsule fixed end, fixed to the outer side wall of the tube body;

[0018] a fixing block fixed to the outer side wall of the tube body and located in front of the fixed end of the capsule;

[0019] A capsule sliding end is provided between the capsule fixed end and the fixed block; the capsule sliding end is slidably mounted on the outer side wall of the tube body;

[0020] The capsule is arranged between the fixed end of the capsule and the sliding end of the capsule, and connects the fixed end of the capsule and the sliding end of the capsule; the mucus enters the capsule through the first drainage hole, pushes the sliding end of the capsule and expands the capsule, and the capsule in the expanded state is sealed and connected to the outer wall of the tube body and the inner wall of the deep hole.

[0021] Optionally, a second mucus space is provided between the first expansion capsule module and the second expansion capsule module, and the second mucus space is used to accommodate mucus.

[0022] Optionally, the tube body is connected to a one-way valve, which is located between the first expansion capsule module and the second expansion capsule module and is in an open state under a set pressure of the mucus, and the mucus enters the second mucus space through the one-way valve.

[0023] Optionally, the mucus fills the second mucus space and blocks the gas entering through the first expansion capsule module or the second expansion capsule module.

[0024] The embodiment of the present application provides a deep hole sealing pressure measuring device, wherein the tube body is used to be accommodated in the deep hole; the tube body includes a plurality of section tubes, and the plurality of section tubes are connected along the axial direction; the pressure measuring assembly is connected to the tube body; the pressure measuring assembly includes a pressure measuring end, a first branch pipe and a bursting valve; the first branch pipe is in the tube body; one end of the first branch pipe is connected to the pressure measuring end, and the other end is connected to the bursting valve; the bursting valve is at the end of the tube body, and the bursting valve is in an open state when it reaches a preset pressure, and the pressure measuring end is used to detect the air pressure of the deep hole. At this time, the pressure measuring end detects the air pressure of the deep hole only when the bursting valve is in an open state, and the pressure measuring end detects the internal air pressure of the first branch pipe when the bursting valve is in a closed state, so as to detect whether the first branch pipe is in the connection process In addition, the mucus adding component is arranged on one side of the pressure measuring assembly; the mucus adding component includes a mucus tank, a first expansion capsule module, and a second expansion capsule module; the mucus tank is connected to the tube body and outputs mucus to the tube body, the mucus fills the internal space of the tube body, and penetrates into the first expansion capsule module, the second expansion capsule module and the space between the first expansion capsule module and the second expansion capsule module, so that the first expansion capsule module and the second expansion capsule module are both in an expanded state, and seal the outer wall of the tube body and the inner wall of the deep hole, and the outer wall of the tube body and the inner wall of the deep hole are fixed by the first expansion capsule module and the second expansion capsule module to maintain the position of the tube body relative to the deep hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0026] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0027] Figure 1 Schematic diagram of the deep hole sealing pressure measuring device provided in an embodiment of the present application.

[0028] Figure 2 A partial schematic diagram of the first branch pipe of the deep hole sealing pressure measuring device provided in an embodiment of the present application.

[0029] Figure 3 Schematic diagram of the first expansion capsule module of the deep hole sealing pressure measuring device provided in an embodiment of the present application.

[0030] Figure 4 Schematic diagram of the second expansion capsule module of the deep hole sealing pressure measuring device provided in an embodiment of the present application.

[0031] Figure 5 Schematic diagram of the deep hole sealing pressure measuring device provided in an embodiment of the present application for venting and detecting the sealing performance of the first branch pipe.

[0032] Figure 6 Schematic diagram of the usage status of the deep hole sealing pressure measuring device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0034] The embodiment of the present application provides a deep hole sealing pressure measuring device 100 to solve the technical problem that the existing sealing pressure measuring device cannot simultaneously detect the sealing performance of the first branch pipe during the connection process.

[0035] Please refer to the attached Figures 1 to 6 An embodiment of the present application provides a deep hole sealing pressure measuring device 100, which is used to perform air pressure detection on a deep hole 200. The deep hole sealing pressure measuring device 100 includes a tube body 10, a pressure measuring component 20 and a mucus adding component 30. The pressure measuring component 20 and the mucus adding component 30 are both connected to the tube body 10 and arranged adjacent to each other.

[0036] The tube body 10 serves as a supporting component of the deep hole sealing pressure measuring device 100 . The tube body 10 is used to be accommodated in the deep hole 200 . There is a gap between the outer wall of the tube body 10 and the inner wall of the deep hole 200 . The tube body 10 passes through the deep hole 200 .

[0037] The tube body 10 includes a plurality of tube sections 11 , which are connected along the axial direction. At this time, the plurality of tube sections 11 can be designed to have the entire length of the tube body 10 , and two adjacent tube sections 11 are sealed and connected.

[0038] The pressure measuring assembly 20 is connected to the pipe body 10; the pressure measuring assembly 20 includes a pressure measuring end 21, a first branch pipe 22 and a bursting valve 23; the first branch pipe 22 and the bursting valve 23 are inside the pipe body 10, and the pressure measuring end 21 is outside the pipe body 10. The pressure measuring end 21 is connected to the first branch pipe 22 through a pipeline. At this time, one end of the first branch pipe 22 is connected to the pressure measuring end 21, and the other end is connected to the bursting valve 23; the bursting valve 23 is at the end of the pipe body 10, and the bursting valve 23 is in an open state when it reaches a preset pressure. The pressure measuring end 21 is used to detect the air pressure in the enclosed space of the deep hole 200.

[0039] The first branch pipe 22 has multiple sections, each section of the first branch pipe 22 is connected to a corresponding section pipe 11, and is connected to each other as the sections 11 are connected. At this time, when the multiple sections of the first branch pipe 22 are connected, the bursting valve 23 is in a closed state, and the pressure measuring end detects the internal air pressure of the first branch pipe 22 when the bursting valve 23 is in a closed state, so as to determine the sealing performance of each section pipe 11 during the connection process, and to detect the air pressure of the first branch pipe 22 in real time, so that the deep hole sealing pressure measuring device 100 can also detect the sealing performance of the first branch pipe 22 during the connection process. In addition, the pressure measuring end 21 detects the air pressure in the enclosed space of the deep hole 200 only when the bursting valve 23 is in an open state, and the pressure measuring end 21 detects the internal air pressure of the first branch pipe 22 when the bursting valve 23 is in a closed state, so as to detect the sealing performance of the first branch pipe 22 during the connection process.

[0040] Specifically, a multi-section first branch pipe 22 is connected between the pressure measuring end 21 and the bursting valve 23. When the multi-section first branch pipe 22 is in a connected state, the bursting valve 23 is in a closed state. The pressure measuring end 21 is used to detect the air pressure value between the multi-section first branch pipe 22.

[0041] The mucus adding component 30 is arranged on one side of the pressure measuring assembly 20; the mucus adding component 30 includes a mucus tank 31, a first expansion capsule module 32, and a second expansion capsule module 33; the first expansion capsule module 32 and the second expansion capsule module 33 are located in the deep hole 200 and are connected to the outer wall of the tube body 10, and the mucus tank 31 is outside the tube body 10 and is arranged on one side of the pressure measuring end 21. Optionally, the mucus tank 31 is connected to a liquid pump, and the mucus in the mucus tank 31 flows into the tube body 10 under the drive of the liquid pump.

[0042] The mucus tank 31 is connected to the tube body 10 and outputs mucus to the tube body 10. The mucus fills the internal space of the tube body 10 and penetrates into the first expansion capsule module 32 and the second expansion capsule module 33, so that the first expansion capsule module 32 and the second expansion capsule module 33 are both in an expanded state and seal the outer wall of the tube body 10 and the inner wall of the deep hole 200.

[0043] At this time, the mucus fills the internal space of the tube body 10 and penetrates into the first expansion capsule module 32 and the second expansion capsule module 33, so that the first expansion capsule module 32 and the second expansion capsule module 33 are both in an expanded state, and seal the outer wall of the tube body 10 and the inner wall of the deep hole 200, and fix the outer wall of the tube body 10 and the inner wall of the deep hole 200 through the first expansion capsule module 32 and the second expansion capsule module 33 to maintain the position of the tube body 10 relative to the deep hole 200.

[0044] Among them, the tube body 10 is provided with an inner cavity, the first branch tube 22 is passed through the tube body 10 and is located in the inner cavity, and a first mucus space 10a is formed between the outer wall of the first branch tube 22 and the inner wall of the inner cavity. The mucus output through the mucus tank 31 flows into the first mucus space 10a, the mucus fills the first mucus space 10a, and flows toward the end of the tube body 10.

[0045] Among them, the first expansion capsule module 32 is arranged on the rear side of the second expansion capsule module 33; the first expansion capsule module 32 and the second expansion capsule module 33 are both connected to the tube body 10; the tube body 10 is provided with two first drainage holes 12, and the two first drainage holes 12 are respectively connected to the first expansion capsule module 32 and the second expansion capsule module 33, and the mucus enters the first expansion capsule module 32 and the second expansion capsule module 33 through the first drainage holes 12.

[0046] At this time, the mucus enters the first expansion capsule module 32 and the second expansion capsule module 33 , and the first expansion capsule module 32 and the second expansion capsule module 33 are adjusted from a natural state to an expanded state.

[0047] The first expansion capsule module 32 and the second expansion capsule module 33 each include a capsule fixing end 321 , a fixing block 322 , a capsule sliding end 333 and a capsule 334 .

[0048] The capsule fixing end 321 is fixed to the outer wall of the tube body 10 and sleeved on the outer wall of the tube body 10 . At this time, the capsule fixing end 321 is located between the outer wall of the tube body 10 and the inner wall of the deep hole 200 .

[0049] The fixed block 322 is fixed to the outer wall of the tube body 10 and is located in front of the capsule fixed end 321. At this time, the fixed block 322 acts as a limiting block to limit the sliding range of the capsule sliding end 333. At this time, the space between the fixed block 322 and the capsule fixed end 321 is the sliding space of the capsule sliding end 333.

[0050] The capsule sliding end 333 is arranged between the capsule fixed end 321 and the fixed block 322; the capsule sliding end 333 is slidably mounted on the outer wall of the tube body 10. At this time, the capsule sliding end 333 slides along the axial direction of the tube body 10 and slides toward the fixed block 322.

[0051] The capsule 334 is arranged between the capsule fixed end 321 and the capsule sliding end 333, and connects the capsule fixed end 321 and the capsule sliding end 333; the mucus enters the capsule 334 through the first drainage hole 12, and pushes the capsule sliding end 333 and the expanded capsule 334. The capsule 334 in the expanded state seals and connects the outer wall of the tube body 10 and the inner wall of the deep hole 200, so as to fix the outer wall of the tube body 10 and the inner wall of the deep hole 200, thereby facilitating the maintenance of the position of the tube body 10 relative to the deep hole 200.

[0052] In addition, a second mucus space 30a is provided between the first expansion capsule module 32 and the second expansion capsule module 33. The second mucus space 30a is used to accommodate mucus. At this time, the tube body 10 is connected to a one-way valve 16. The one-way valve 16 is located between the first expansion capsule module 32 and the second expansion capsule module 33, and is in an open state when the mucus reaches a set pressure. The mucus enters the second mucus space 30a through the one-way valve 16 and forms a further seal outside the first expansion capsule module 32 and the second expansion capsule module 33. The mucus fills the second mucus space 30a and blocks the gas entering through the first expansion capsule module 32 or the second expansion capsule module 33, so that it can be applied to scenarios where there are cracks on the inner wall of the deep hole 200.

[0053] Optionally, a cover plate 13 is provided in the tube body 10, which is close to the end of the tube body 10 and blocks the first mucus space 10a; the cover plate 13 is provided with an air hole 14 and a float 15, and the float 15 is pushed by the mucus to block the air hole 14. When the mucus flows to the float 15, the mucus pushes the float 15 to move to the front end, cooperating with the spherical groove on the end face to block the exhaust hole 14, so that the mucus cannot flow into the drill hole.

[0054] The embodiment of the present application provides a deep hole sealing pressure measuring device 100, in which a tube body 10 is used to be accommodated in a deep hole 200; the tube body 10 includes a plurality of section tubes 11, and the plurality of section tubes 11 are connected along the axial direction; a pressure measuring assembly 20 is connected to the tube body 10; the pressure measuring assembly 20 includes a pressure measuring end 21, a first branch pipe 22 and a bursting valve 23; the first branch pipe 22 is in the tube body 10; one end of the first branch pipe 22 is connected to the pressure measuring end 21, and the other end is connected to the bursting valve 23; the bursting valve 23 is at the end of the tube body 10, and the bursting valve 23 is in an open state when it reaches a preset pressure, and the pressure measuring end 21 is used to detect the air pressure in the enclosed space of the deep hole 200. At this time, the pressure measuring end 21 detects the air pressure of the deep hole 200 only when the bursting valve 23 is in an open state, and the pressure measuring end 21 detects the pressure of the first branch pipe 22 when the bursting valve 23 is in a closed state. The internal air pressure is increased to facilitate testing the sealing of the first branch pipe 22 during the connection process. In addition, a mucus adding component 30 is arranged on one side of the pressure measuring assembly 20; the mucus adding component 30 includes a mucus tank 31, a first expansion capsule module 32, and a second expansion capsule module 33; the mucus tank 31 is connected to the tube body 10 and outputs mucus to the tube body 10. The mucus fills the internal space of the tube body 10 and penetrates into the first expansion capsule module 32 and the second expansion capsule module 33, so that the first expansion capsule module 32 and the second expansion capsule module 33 are both in an expanded state and seal the outer wall of the tube body 10 and the inner wall of the deep hole 200. The outer wall of the tube body 10 and the inner wall of the deep hole 200 are fixed by the first expansion capsule module 32 and the second expansion capsule module 33 to maintain the position of the tube body 10 relative to the deep hole 200.

[0055] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0056] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0057] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for technical personnel in this field, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on this application.

Claims

1. A deep hole sealing pressure measuring device, characterized in that: include: The tube body is used to be accommodated in the deep hole; the tube body includes a plurality of tube sections, and the plurality of tube sections are connected along the axial direction; A pressure measuring assembly is connected to the pipe body; the pressure measuring assembly comprises a pressure measuring end, a first branch pipe and a bursting valve; the first branch pipe is in the pipe body; one end of the first branch pipe is connected to the pressure measuring end, and the other end is connected to the bursting valve; the bursting valve is at the end of the pipe body, and the bursting valve is in an open state when it reaches a preset pressure, and the pressure measuring end is used to detect the air pressure in the enclosed space of the deep hole; a mucus adding component, arranged at one side of the pressure measuring assembly; the mucus adding component comprises a mucus tank, a first expansion capsule module, and a second expansion capsule module; the mucus tank is connected to the tube body and outputs mucus to the tube body, the mucus fills the inner space of the tube body and penetrates into the first expansion capsule module and the second expansion capsule module, so that the first expansion capsule module and the second expansion capsule module are both in an expanded state, and seal the outer wall of the tube body and the inner wall of the deep hole; The tube body is provided with an inner cavity, the first branch tube is passed through the tube body and is located in the inner cavity, a first mucus space is formed between the outer wall of the first branch tube and the inner wall of the inner cavity, and the mucus output from the mucus tank flows into the first mucus space; A cover plate is provided in the tube body, the cover plate is close to the end of the tube body and blocks the first mucus space; the cover plate is provided with an air hole and a float, and the float is pushed by the mucus to block the air hole; A second mucus space is provided between the first expansion capsule module and the second expansion capsule module, and the second mucus space is used to contain mucus; The tube body is connected with a one-way valve, which is located between the first expansion capsule module and the second expansion capsule module and is in an open state under a set pressure of the mucus. The mucus enters the second mucus space through the one-way valve.

2. A deep hole sealing pressure measuring device according to claim 1, characterized in that: The first branch pipe has multiple sections, each section of the first branch pipe is connected to the corresponding section pipe, and is connected to each other along with the connection between the section pipes.

3. A deep hole sealing pressure measuring device according to claim 2, characterized in that: A plurality of first branch pipes are connected between the pressure measuring end and the bursting valve; When the multiple sections of the first branch pipe are in a connected state, the bursting valve is in a closed state, and the pressure measuring end is used to detect the air pressure value between the multiple sections of the first branch pipe.

4. A deep hole sealing pressure measuring device according to claim 1, characterized in that: The first expansion capsule module is arranged at the rear side of the second expansion capsule module; the first expansion capsule module and the second expansion capsule module are both connected to the tube body; The tube body is provided with two first drainage holes, which are respectively connected to the first expansion capsule module and the second expansion capsule module, and the mucus enters the first expansion capsule module and the second expansion capsule module through the first drainage holes.

5. A deep hole sealing pressure measuring device according to claim 4, characterized in that: The first expansion capsule module and the second expansion capsule module both include: A capsule fixed end, fixed to the outer side wall of the tube body; A fixing block, fixed to the outer side wall of the tube body and located in front of the fixed end of the capsule; A capsule sliding end is disposed between the capsule fixed end and the fixed block; the capsule sliding end is slidably mounted on the outer side wall of the tube body; The capsule is arranged between the fixed end of the capsule and the sliding end of the capsule, and connects the fixed end of the capsule and the sliding end of the capsule; the mucus enters the capsule through the first drainage hole, pushes the sliding end of the capsule and expands the capsule, and the capsule in the expanded state is sealed and connected to the outer wall of the tube body and the inner wall of the deep hole.

6. A deep hole sealing pressure measuring device according to claim 1, characterized in that: The mucus fills the second mucus space and blocks the gas entering through the first expansion capsule module or the second expansion capsule module.

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