Underground multifunctional seismic wave sensing coupler

Abstract

The invention relates to the technical field of coal mine safety sensing, and particularly provides an underground multifunctional seismic wave sensing coupler which is simple in structure, convenient to install and good in sealing performance. Comprising a coupling body, fixing screws, a sealing ring and a sealing cover. The coupling body comprises a front end and a rear end, a rod insertion hole is formed in the front end of the coupling body, and threads are evenly distributed on the outer surface of the front end and used for installing and fixing screws. The rear end of the coupling main body is of a tetrahedral structure, each surface can be provided with mounting holes, and the mounting holes comprise a single-component sensor mounting deep hole, a three-component sensor mounting screw hole and a single-component cone sensor mounting threaded hole; the sealing cover is provided with a thread structure matched with the sensor groove, and the sealing ring is arranged on the sensor in a sleeving mode and matched with the sealing cover in a pressing mode, so that the coupling body and the sensor form a sealed coupling state.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine safety sensing, and in particular to an underground multifunctional seismic wave sensing coupler. Background Art

[0002] In coal mines and similar underground mining operations, seismic wave monitoring technology is an important means of geological exploration and disaster warning. It can analyze geological structures, predict rock stability, and monitor underground stress changes by monitoring the propagation characteristics of seismic waves in underground rock formations, providing key data support for mine safety production. However, the underground environment is complex and changeable, with harsh conditions such as high humidity, high dust, and strong vibration, which poses severe challenges to the installation, fixation, and performance stability of seismic wave sensors.

[0003] Traditional installation methods for seismic wave sensors mostly use direct fixation on the underground rock wall or anchor rod, but this method has many shortcomings. First, the direct fixation method generally makes it difficult to ensure that the sensor fits tightly with the installation base, resulting in reduced signal transmission efficiency and affecting the accuracy of monitoring data. Secondly, the underground environment is harsh, and the sensor and its connecting cables are easily corroded by moisture, dust, etc., which affects the service life and stability of the sensor. In addition, the traditional installation method is cumbersome when replacing or repairing sensors, and requires carrying a large number of professional tools, which increases the difficulty and cost of the operation.

[0004] In order to overcome the above technical difficulties and improve the accuracy and reliability of seismic wave monitoring, researchers have begun to explore more efficient and convenient ways to install underground seismic wave sensors in recent years. Among them, the research and development of multifunctional sensor couplers has become a hot topic. By designing sensor couplers with multiple functional modules, effective fixation, sealing protection, and rapid installation and disassembly of sensors can be achieved, thereby meeting the monitoring needs in complex underground environments.

[0005] However, existing downhole seismic wave sensor couplers still have deficiencies in terms of functional integration, installation convenience, sealing performance, etc. For example, although some couplers have fixing and sealing functions, they have complex structures and cumbersome installation operations; although some couplers are easy to install, they have poor sealing performance and are difficult to effectively resist the erosion of the harsh downhole environment. Summary of the invention

[0006] The purpose of the present invention is to provide a downhole multifunctional seismic wave sensor coupler with simple structure, convenient installation and good sealing performance.

[0007] To achieve the above-mentioned purpose, the embodiment of the present disclosure provides a downhole multifunctional seismic wave sensor coupler, including a coupling body, a fixing screw, a sealing ring and a sealing cover; the coupling body includes a front end and a rear end, the front end of the coupling body is internally provided with a rod insertion hole, and the outer surface of the front end is provided with evenly distributed threads for installing the fixing screws; the rear end of the coupling body is a tetrahedral structure, and each side can be provided with a mounting hole, and the mounting holes include a single-component sensor mounting deep hole, a three-component sensor mounting screw hole and a single-component conical sensor mounting threaded hole; the sealing cover is provided with a threaded structure matching the sealing ring, and the sealing ring is mounted on the sensor and pressed together with the sealing cover to form a sealed coupling state between the coupling body and the sensor.

[0008] Beneficial effects of the basic solution: This coupler supports the installation of a variety of different sensors, deep holes support the installation of single-component sensors, screw holes support the installation of three-component sensors, and threaded holes support single-component cone sensors, so that the coupler can adapt to a variety of seismic wave detection needs and improve the versatility and flexibility of the equipment. At the same time, the tetrahedral structure enhances its structural strength and stability, enabling it to better adapt to the complex and changeable working environment underground, and can flexibly and conveniently select the installation location and number of sensors according to actual needs, further optimizing the detection effect.

[0009] The sealing cover and the sealing ring are pressed together to ensure a sealed coupling state between the coupling body and the sensor. This design effectively prevents the sensor from being corroded by impurities such as moisture and dust in the complex underground environment, protects the sensitive components of the sensor, prolongs the service life of the sensor, and also ensures the accuracy and stability of seismic wave signal transmission.

[0010] The outer surface of the front end of the coupling body is provided with evenly distributed threads, which is convenient for installation through fixing screws, improving installation efficiency. In addition, it also ensures the stability of the coupler when working underground, reduces loosening or falling off due to factors such as vibration, and ensures the continuity and reliability of detection work.

[0011] As an implementable preferred solution, an anchor rod positioning end hole is provided in the anchor rod insertion hole of the coupling body.

[0012] As an implementable preferred solution, a direction mark and a horizontal bubble device are provided on the bottom surface of the rear end of the coupling body, and the horizontal bubble device is used to adjust the horizontal degree of the coupling body.

[0013] As an implementable preferred solution, the head of the fixing screw is a flat butterfly-shaped structure.

[0014] As an implementable preferred solution, a central wire hole is provided on the sealing cover for passing a connecting cable of the sensor.

[0015] As an implementable preferred solution, after the connecting cable passes through the central wire hole, the hole opening is sealed with a sealing material.

[0016] As an implementable preferred solution, the exterior of the sealing cover is designed to be in the shape of a hexagonal nut, which is convenient for tightening using tools.

[0017] As an implementable preferred solution, the inner diameter and outer diameter of the sealing ring are matched with the installation position of the sensor and the sealing cover respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first structural schematic diagram of the coupling body.

[0019] Figure 2 It is a second structural schematic diagram of the coupling body.

[0020] Figure 3 It is a first cross-sectional view of the coupling body.

[0021] Figure 4 is a second cross-sectional view of the coupling body.

[0022] Figure 5 Schematic diagram of the three-dimensional installation for fixed use of a single-component sensor.

[0023] Figure 6 Cross-sectional view of the installation plane for fixed use of a single-component sensor.

[0024] Figure 7 Schematic diagram of the 3D setup for three single-component sensors.

[0025] Figure 8 Cutaway view of the installation plan for three single-component sensors.

[0026] Fig. 9 3D schematic diagram for the installation of a three-component sensor.

[0027] Fig.10 Installation plan view of the three-component sensor.

[0028] Fig.11 A schematic diagram of the structure of the fixing screw.

[0029] Fig.12 Schematic diagram of the sealing ring structure.

[0030] Fig.13 Schematic diagram of the sealing cover structure. DETAILED DESCRIPTION

[0031] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only partial embodiments of the present invention, which are only used to explain the present application, rather than to limit the present application. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be considered isolated, and they can be combined with each other to achieve better technical effects. The same reference numerals appearing in the drawings of the following embodiments represent the same features or components, which can be applied to different embodiments.

[0032] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present invention should have the common meanings understood by those skilled in the art in the art to which the present invention belongs.

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings: Reference numerals: front end 1, rear end 2, anchor rod insertion hole 3, anchor rod positioning end hole 4, direction mark 5, horizontal bubble device 6.

[0034] Reference Figure 1 The front end of the coupling body is cylindrical, preferably made of high-strength aluminum alloy, and its diameter and length are determined according to the actual installation requirements of the coal mine to ensure the matching with the anchor rod. The outer surface of the cylinder is provided with evenly distributed threads for installing fixing screws, and the coupling body is firmly fixed on the anchor rod through the compression of the fixing screws.

[0035] An anchor rod insertion hole 3 is also provided in the cylinder, and an anchor rod positioning end hole 4 is provided in the hole. The anchor rod positioning end hole 4 can effectively prevent the anchor rod from tilting during installation, and ensure the verticality and stability of the coupling body and the anchor rod.

[0036] Reference Figure 3 and Figure 4 The rear end 2 of the coupling body is a tetrahedron structure to meet the installation requirements of different sensors. Each side can be provided with a mounting hole, including a single-component sensor mounting deep hole, a three-component sensor mounting screw hole, and a single-component cone sensor mounting threaded hole. In one embodiment, one side is a deep hole, the size of the deep hole matches the fixed use of the single-component sensor, through threaded connection or other fastening methods, refer to Figure 5 and Figure 6 , the fixed single-component sensor is firmly installed on the coupling body; the other three sides are respectively provided with threaded holes for installing the single-component cone sensor, refer to Figure 6 and Figure 7 By screwing in the corresponding mounting parts, the cone sensor can be quickly installed and removed. Figure 7 and Figure 8The bottom surface of the rear end 2 is also provided with a three-component sensor mounting threaded hole for adapting and installing the three-component sensor. Reference Figure 2 On the bottom surface of the rear end 2 of the coupling body, there are also direction marks 5 and horizontal bubble devices 6. The direction marks 5 are used to indicate the installation direction of the coupling body to ensure that the sensor can be arranged in a predetermined direction during installation. The horizontal bubble device 6 is used to adjust the horizontality of the coupling body. By adjusting the relative position between the coupling body and the anchor rod, the horizontal bubble is centered, thereby ensuring that the sensor is in a horizontal state after installation, thereby improving the accuracy and reliability of seismic wave monitoring.

[0037] Reference Fig.10 The head of the fixing screw is a flat butterfly-shaped structure, preferably made of high-strength aluminum alloy, which is convenient for workers to tighten with their hands or simple tools without carrying special tightening tools. It is preferably made of stainless steel. At the same time, the threaded part of the screw matches the thread at the front end of the coupling body. By rotating the fixing screw, the coupling body and the anchor rod can be fastened.

[0038] Reference Fig.11 The sealing ring is made of rubber material and is in a circular ring structure. Its inner diameter and outer diameter match the installation position of the sensor and the sealing cover respectively. During the installation process, the sealing ring is put on the sensor, and as the sealing cover is tightened, it forms a tight sealing structure with the coupling body, thereby effectively preventing the erosion and damage of the electronic components inside the sensor by the harsh environment such as humidity and dust underground, ensuring the long-term stable operation of the sensor.

[0039] Reference Fig.12 The sealing cover is provided with a threaded structure matching the sealing ring, and a tight connection with the coupling body can be achieved by rotating the sealing cover. The outer design of the sealing cover is a hexagonal nut shape, which is convenient for tightening with a wrench or other tools. At the same time, the sealing cover is also provided with a central wire hole for passing the connecting cable of the sensor. After the connecting cable passes through the central wire hole, the hole is sealed with a special adhesive sealing material to prevent moisture and dust from entering the coupler.

[0040] A method for installing a multifunctional underground seismic wave sensor coupler is as follows: Step S100, check whether the components of the coupler are intact, and confirm that the anchor rod has been driven into the underground rock formation according to the predetermined position.

[0041] Step S200, insert the front end of the coupling body into the anchor rod insertion hole 3, and ensure that the anchor rod positioning end hole 4 is aligned with the anchor rod. Then, use the fixing screws to tighten two turns of the thread respectively to firmly fix the coupling body on the anchor rod.

[0042] Step S300, select a suitable sensor (a fixed single-component sensor, a single-component vertebral sensor or a three-component sensor) according to actual needs. For a fixed single-component sensor, directly install it in the deep hole of the rear end 2 of the coupling body and tighten it; for a single-component vertebral sensor and a three-component sensor, screw them into the corresponding threaded holes and tighten them.

[0043] Step S400, the sealing ring is sleeved on the sensor, and then the sealing cover is screwed on the coupling body. During the screwing process, pay attention to the state of the horizontal bubble device 6 to ensure that the coupling body is in a horizontal state.

[0044] Step S500: Pass the connecting cable of the sensor through the central wire hole of the sealing cover, and seal the hole with a special sealing material. Finally, connect the connecting cable to the corresponding interface of the downhole monitoring system.

[0045] The above contents are only embodiments of the present invention. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A multifunctional downhole seismic wave sensor coupler, characterized in that: It includes a coupling body, a fixing screw, a sealing ring and a sealing cover; the coupling body includes a front end and a rear end, the front end of the coupling body is internally provided with a rod insertion hole, and the outer surface of the front end is provided with evenly distributed threads for installing the fixing screws; the rear end of the coupling body is a tetrahedron structure, and each side can be provided with a mounting hole, and the mounting holes include a single-component sensor mounting deep hole, a three-component sensor mounting screw hole and a single-component cone sensor mounting threaded hole; the sealing cover is provided with a threaded structure matching the sealing ring, and the sealing ring is mounted on the sensor and pressed together with the sealing cover to form a sealed coupling state between the coupling body and the sensor.

2. The multifunctional downhole seismic wave sensor coupler according to claim 1, characterized in that: An anchor rod positioning end hole is arranged in the anchor rod insertion hole of the coupling body.

3. The multifunctional downhole seismic wave sensor coupler according to claim 1, characterized in that: A direction mark and a horizontal bubble device are arranged on the bottom surface of the rear end of the coupling body, and the horizontal bubble device is used to adjust the horizontal degree of the coupling body.

4. The multifunctional downhole seismic wave sensor coupler according to claim 1, characterized in that: The head of the fixing screw is a flat butterfly-shaped structure.

5. The multifunctional downhole seismic wave sensor coupler according to claim 1, characterized in that: The sealing cover is provided with a central wire hole for passing the connecting cable of the sensor.

6. The multifunctional downhole seismic wave sensor coupler according to claim 5, characterized in that: After the connecting cable passes through the central wire hole, the hole is sealed with sealing material.

7. The multifunctional downhole seismic wave sensor coupler according to claim 1, characterized in that: The outer portion of the sealing cover is designed to be in the shape of a hexagonal nut, which is convenient for tightening using tools.

8. A multifunctional downhole seismic wave sensor coupler according to claim 1 or 7, characterized in that: The inner diameter and outer diameter of the sealing ring are matched with the installation position of the sensor and the sealing cover respectively.

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