A quality detection device for water-stopping casing used for water exploration and drainage in coal mines

Abstract

The present invention discloses a quality detection device for water-stopping sleeves for water exploration and drainage in coal mines, belonging to the field of water-stopping sleeve quality detection devices. The quality detection device for water-stopping sleeves for water exploration and drainage in coal mines of the present invention comprises a sleeve, one end of which is connected with a flange, a pressure-applying member is provided through the outer wall of the sleeve, a sealing member is provided between the inner wall of the flange and the outer surface of the sleeve, a reinforcement member is provided between the outer wall of the flange and the outer surface of the sleeve, a flange baffle is provided on one side of the flange, and a pressure detection member is provided on the end of the flange baffle away from the flange. The present invention effectively solves the hidden danger of water leakage caused by welding quality problems through internal and external double-layer welding, multi-layer sealing, multiple reinforcement structures and manual oil pump design, and ensures the safety and reliability of water exploration and drainage construction. The present invention has important practical application value and broad market prospects, and is suitable for coal mine water exploration and drainage engineering operations across the country.

Description

Technical Field

[0001] The invention belongs to the field of water-stop casing quality detection devices, and in particular relates to a water-stop casing quality detection device for coal mine water exploration and drainage. Background Art

[0002] The water-stopping casing for coal mine water exploration and drainage is a device used to control water inrush and prevent floods in coal mines. It is usually made of a steel pipe or polymer material with a large inner diameter and a long length, and is used to transport water or control water flow in coal mines. During coal mining, due to the influence of factors such as coal seam pressure and geological conditions, a large amount of water inrush will be generated, posing a threat to the coal mine working face and tunnels. By using a water-stopping casing, water flow can be effectively controlled and floods can be prevented.

[0003] According to the Coal Mine Safety Regulations, when drilling holes for water exploration and drainage in coal mines, if the water pressure in the borehole is expected to be greater than 0.1 MPa, a water-stop casing must be installed and grouting must be performed on the surrounding rock of the borehole to ensure the safety of the water exploration and drainage construction. The orifice pipes currently used are all welded and processed by themselves with flanges, and the project requires a pressure resistance of 5 MPa. Sometimes water leakage occurs due to welding quality problems, and there is a long-term risk of water leakage that cannot be handled underground. Summary of the invention

[0004] In view of the above problems existing in the prior art, the object of the present invention is to provide a quality detection device for water-stopping casing used for water exploration and drainage in coal mines.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is as follows: it includes a sleeve, a flange is connected to one end of the sleeve, a pressure-applying member is penetrated through the outer wall of the sleeve, a sealing member is arranged between the inner wall of the flange and the outer surface of the sleeve, a reinforcement member is arranged on the outer wall of the flange and the outer surface of the sleeve, a flange baffle is arranged on one side of the flange, and a pressure detection member is arranged on the end of the flange baffle away from the flange.

[0006] Furthermore, a quick connector 1 is fixedly connected to the outer wall of the sleeve, the quick connector 1 is communicated with the inner cavity of the sleeve, and one end of the quick connector 1 away from the sleeve is fixedly connected to the pressure-applying member.

[0007] Furthermore, the pressure-applying member is a manual oil pump, and an output end of the manual oil pump is fixedly connected to a quick connector.

[0008] Furthermore, the seal includes a middle peripheral portion, an outer peripheral portion is arranged at one end of the middle peripheral portion, the outer peripheral portion is continuously bent along the outer side of the middle peripheral portion and surrounds the middle peripheral portion, a receiving cavity is formed between the outer peripheral portion and the middle peripheral portion, and a plurality of flow-blocking inclined grooves are respectively provided at both ends of the outer peripheral portion.

[0009] Furthermore, an annular groove is formed on the inner wall of the flange, and the outer side of the outer peripheral portion is respectively fitted with the annular groove of the flange and the outer side wall of the sleeve.

[0010] Furthermore, the reinforcement includes a plurality of bending brackets and a plurality of annular brackets, the bending brackets are arranged in an annular array along the axis of the sleeve, the plurality of annular brackets are fixedly connected along the outer wall of the sleeve and the flange, and the plurality of annular brackets are staggered with the plurality of bending brackets, the inner wall of the flange is welded to the sleeve, and the outer wall of the flange is welded to the sleeve through a plurality of bending brackets and a plurality of annular brackets.

[0011] Furthermore, the pressure detection component includes a second quick connector, which is coaxial with and fixedly connected to the flange baffle, and a pressure gauge and an isolation ball valve are sequentially arranged at one end of the second quick connector away from the flange baffle.

[0012] Furthermore, adjacent ends of the flange and the flange baffle are provided with embedded grooves, and a sealing gasket is fitted between the two embedded grooves.

[0013] Furthermore, the flange and the side wall of the flange baffle are respectively provided with threaded holes for threaded connection.

[0014] Furthermore, the outer peripheral portion and the middle peripheral portion are made of rubber material.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a quality inspection device for water-stopping sleeves for coal mine water exploration and drainage, which has a simple structure, is easy to operate, and is safe and reliable. Through internal and external double-layer welding, multi-layer sealing, multiple reinforcement structures and a manual oil pump design, the device effectively solves the hidden danger of water leakage caused by welding quality problems and ensures the safety and reliability of water exploration and drainage construction. The present invention has important practical application value and broad market prospects, and is suitable for coal mine water exploration and drainage engineering operations across the country.

[0016] (2) The present invention has a simple structure, reasonable design and is easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An overall diagram of a quality inspection device for water-stopping casing used for water exploration and drainage in coal mines Figure 1 ; Figure 2 An overall diagram of a quality inspection device for water-stopping casing used for water exploration and drainage in coal mines Figure 2 ; Figure 3 It is a disassembled schematic diagram of a quality inspection device for water-stopping casing used for water exploration and drainage in coal mines; Figure 4 It is a cross-sectional schematic diagram of a quality detection device for a water-stopping casing used for water exploration and drainage in a coal mine; Figure 5 is an overall schematic diagram of the seal; Figure 6 A schematic cross-sectional view of a seal.

[0018] In the figure: 1. casing; 2. quick connector 1; 3. manual oil pump; 4. flange; 5. annular groove; 6. middle peripheral part; 7. receiving chamber; 8. outer peripheral part; 9. flow-blocking inclined groove; 10. bending bracket; 11. annular bracket; 12. flange baffle; 13. quick connector 2; 14. pressure gauge; 15. isolation ball valve. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments.

[0020] Example 1 like Figure 1-Figure 6 As shown, a quality inspection device for a water-stop casing 1 for water exploration and drainage in a coal mine comprises a casing 1, and a flange 4 is connected to one end of the casing 1, and is characterized in that a pressure-applying member is penetrated through the outer wall of the casing 1, a sealing member is arranged between the inner wall of the flange 4 and the outer surface of the casing 1, a reinforcing member is arranged between the outer wall of the flange 4 and the outer surface of the casing 1, a flange baffle 12 is arranged on one side of the flange 4, a plurality of positioning holes are arranged on the flange 4 and the flange baffle 12, and the flange 4 and the flange baffle 12 are fixed by passing a plurality of bolts through the positioning holes and tightening the nuts on the bolts, annular grooves are arranged at adjacent ends of the flange 4 and the flange baffle 12, and sealing gaskets are fitted in the two annular grooves to prevent the leakage of liquid from the flange 4 and the flange baffle 12, and a pressure detection member is arranged at the end of the flange baffle 12 away from the flange 4.

[0021] The outer wall of the casing 1 is fixedly connected with a quick connector 2, which is connected to the inner cavity of the casing 1. The end of the quick connector 2 away from the casing 1 is fixedly connected to a pressure-applying piece, which is a manual oil pump 3. The manual oil pump 3 is used to perform a pressure test on the inside of the casing 1, and the output end of the manual oil pump 3 is fixedly connected to the quick connector.

[0022] It should be noted that the flange baffle 12 is connected to the orifice pipe flange 4, the sealer is connected to the other end of the casing 1 for sealing, and a manual oil pump 3 is used to inject high-pressure liquid into the casing 1 through a quick connector 2 for a pressure test. After the pressure reaches the engineering design requirements, observe whether there is any leakage. If there is any leakage, mark it and perform repair welding, and test again until the pressure meets the standard. The seal ensures the sealing between the flange 4 and the casing 1 to prevent leakage during the pressure test. The reinforcement enhances the connection strength between the flange 4 and the casing 1 to ensure stability during the high-pressure test.

[0023] In this way, by adopting the above arrangement, stable high-pressure liquid is provided by the manual oil pump 3 to ensure the accuracy and consistency of the test pressure. The design of the seals and reinforcements effectively prevents leakage and loose connections, thereby improving the reliability of the test. The use of the manual oil pump 3 makes the pressure test easy to operate, does not require complex equipment, and is suitable for on-site operation. The design of the seals and reinforcements improves the durability and reliability of the entire device and extends its service life. Through regular inspection and maintenance, the long-term and stable operation of the device can be ensured.

[0024] Example 2 like Figure 4 , Figure 5 and Figure 6 As shown, the seal includes a middle circumference 6, an outer circumference 8 is provided at one end of the middle circumference 6, the outer circumference 8 is continuously bent along the outer side of the middle circumference 6 and surrounds the middle circumference 6, a receiving cavity 7 is formed between the outer circumference 8 and the middle circumference 6, a plurality of flow-blocking inclined grooves 9 are respectively provided at both ends of the outer circumference 8, an annular groove 5 is provided on the inner wall of the flange 4, the outer side of the outer circumference 8 is respectively fitted with the annular groove 5 of the flange 4 and the outer side wall of the sleeve 1, the outer circumference and the middle circumference are made of rubber material, and the rubber types include natural rubber, nitrile rubber, fluororubber and silicone rubber, which are widely used in the fields of automobiles, industry, military, etc., especially in occasions requiring oil resistance, chemical corrosion resistance and high temperature resistance.

[0025] It should be noted that by placing the seal in the annular groove 5 of the flange 4 and inserting the sleeve 1 from the inner wall of the flange 4, the sleeve 1 will squeeze the outer peripheral portion 8 during the insertion process, so that the outer peripheral portion 8 moves toward the middle peripheral portion 6 and the space of the accommodating cavity 7 is reduced. As the sleeve 1 is squeezed, the two ends of the outer peripheral portion 8 are respectively fitted with the annular groove 5 of the flange 4 and the outer side wall of the sleeve 1, and rely on its flexible shape to generate a reaction force tending to reset.

[0026] In this way, by adopting the above arrangement, the multi-layer sealing structure effectively prevents the leakage of high-pressure liquid and ensures the reliability of the test. The design of the receiving chamber 7 enables the seal to better adapt to deformation when under pressure, thereby increasing the service life of the seal. The design of the flow-blocking groove 9 reduces the resistance of the fluid when passing through the seal, thereby improving the fluidity of the fluid and the accuracy of the test.

[0027] Example 3 like Figure 2 and Figure 3As shown, the reinforcement includes a plurality of bending brackets 10 and a plurality of annular brackets 11. The bending brackets 10 are arranged in an annular array along the axis of the casing 1. The plurality of annular brackets 11 are fixedly connected along the casing 1 and the outer wall of the flange 4. The plurality of annular brackets 11 are staggered with the plurality of bending brackets 10. The inner wall of the flange 4 is welded to the casing 1. The outer wall of the flange 4 is welded to the casing 1 through the plurality of bending brackets 10 and the plurality of annular brackets 11.

[0028] The staggered arrangement of the bent bracket 10 and the annular bracket 11 forms a multiple reinforcement structure, which significantly enhances the connection strength between the flange 4 and the sleeve 1. The welding connection ensures the firmness and reliability of the connection and prevents the connection from loosening or breaking during high-voltage testing. In this way, by adopting the above arrangement, the multiple reinforcement structures of the bent bracket 10 and the annular bracket 11 significantly enhance the connection strength between the flange 4 and the sleeve 1, ensuring stability during high-voltage testing. The welded connection ensures the firmness and reliability of the connection, extending the service life of the device. The design of the bent bracket 10 and the annular bracket 11 disperses the welding stress, reduces stress concentration, and improves the overall structural strength of the device. The design of the reinforcement can adapt to flanges 4 and sleeves 1 of different sizes and shapes, thereby improving the versatility and flexibility of the device.

[0029] Example 4 like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the pressure detection component includes a quick connector 13, which is coaxial with the flange baffle 12 and fixedly connected. A pressure gauge 14 and an isolation ball valve 15 are sequentially arranged at one end of the quick connector 13 away from the flange baffle 12. The quick connector 13 is coaxial with the flange baffle 12 and fixedly connected, and is used to connect the pressure gauge 14 and the isolation ball valve 15. The pressure gauge 14 is installed at one end of the quick connector 13 away from the flange baffle 12, and is used to monitor the pressure in the system in real time. The isolation ball valve 15 is installed at the front end of the pressure gauge 14, and is used to control the connection and disconnection of the pressure gauge 14 with the system.

[0030] It should be noted that when pressure testing is required, the isolation ball valve 15 is opened to transmit the pressure in the system to the pressure gauge 14 through the quick connector 13. The pressure gauge 14 displays the pressure value in the system in real time. The operator can understand the pressure status of the system by observing the reading of the pressure gauge 14. When pressure testing or system maintenance is not required, the isolation ball valve 15 is closed to cut off the connection between the pressure gauge 14 and the system. This can prevent the pressure in the system from damaging the pressure gauge 14. At the same time, when the pressure gauge 14 needs to be calibrated or replaced, it can be conveniently separated from the system. If abnormally high or low pressure occurs in the system, the operator can quickly close the isolation ball valve 15 to protect the pressure gauge 14 from damage and ensure the safe operation of the system.

[0031] In this way, by adopting the above arrangement, the pressure gauge 14 can monitor the pressure in the system in real time, provide accurate pressure readings, and help operators to promptly discover and deal with abnormal conditions in the system. The use of the isolation ball valve 15 can effectively protect the pressure gauge 14, prevent it from being damaged by abnormal pressure in the system, and extend the service life of the pressure gauge 14. During system maintenance or calibration of the pressure gauge 14, the isolation ball valve 15 can easily separate the pressure gauge 14 from the system to ensure the safety and convenience of operation. In an emergency, the operator can quickly cut off the connection between the pressure gauge 14 and the system by closing the isolation ball valve 15 to prevent the high pressure in the system from damaging the pressure gauge 14, thereby ensuring the safe operation of the system, making the pressure detection device have important application value in the quality inspection of the water-stop casing 1 for coal mine exploration and drainage.

Claims

1. A quality inspection device for a water-stopping casing for water exploration and drainage in a coal mine, comprising a casing (1), one end of the casing (1) being connected to a flange (4), characterized in that: A pressure-applying member is provided through the outer wall of the sleeve (1), a sealing member is provided between the inner wall of the flange (4) and the outer surface of the sleeve (1), a reinforcing member is provided between the outer wall of the flange (4) and the outer surface of the sleeve (1), a flange baffle (12) is provided on one side of the flange (4), and a pressure detection member is provided at the end of the flange baffle (12) away from the flange (4).

2. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 1 is characterized in that: A quick connector 1 (2) is fixedly connected to the outer wall of the sleeve (1); the quick connector 1 (2) is communicated with the inner cavity of the sleeve (1); and one end of the quick connector 1 (2) away from the sleeve (1) is fixedly connected to a pressure-applying member.

3. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 2 is characterized in that: The pressure-applying member is a manual oil pump (3), and the output end of the manual oil pump (3) is fixedly connected to the first quick connector (2).

4. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 1 is characterized in that: The sealing member comprises a middle peripheral portion (6), an outer peripheral portion (8) being arranged at one end of the middle peripheral portion (6), the outer peripheral portion (8) being continuously bent along the outer side of the middle peripheral portion (6) and surrounding the middle peripheral portion (6), a receiving cavity (7) being formed between the outer peripheral portion (8) and the middle peripheral portion (6), and a plurality of flow-blocking inclined grooves (9) being respectively arranged at both ends of the outer peripheral portion (8).

5. The quality detection device for water-stopping casing for water exploration and drainage in coal mines according to claim 4 is characterized in that: An annular groove (5) is formed on the inner wall of the flange (4), and the outer side of the outer peripheral portion (8) is respectively fitted with the annular groove (5) of the flange (4) and the outer side wall of the sleeve (1).

6. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 1 is characterized in that: The reinforcement member comprises a plurality of bent brackets (10) and a plurality of annular brackets (11), wherein the bent brackets (10) are arranged in an annular array along the axis of the sleeve (1), the plurality of annular brackets (11) are fixedly connected along the sleeve (1) and the outer side wall of the flange (4), and the plurality of annular brackets (11) and the plurality of bent brackets (10) are arranged alternately, the inner side wall of the flange (4) is welded to the sleeve (1), and the outer side wall of the flange (4) is welded to the sleeve (1) via the plurality of bent brackets (10) and the plurality of annular brackets (11).

7. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 1 is characterized in that: The pressure detection component comprises a second quick connector (13), the second quick connector (13) being coaxial with and fixedly connected to the flange baffle (12), and a pressure gauge (14) and an isolation ball valve (15) being arranged in sequence at one end of the second quick connector (13) away from the flange baffle (12).

8. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 7 is characterized in that: Adjacent ends of the flange (4) and the flange baffle (12) are both provided with embedded grooves, and a sealing gasket is fitted between the two embedded grooves.

9. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 8, characterized in that: The flange (4) and the side wall of the flange baffle (12) are respectively provided with threaded holes for threaded connection.

10. The quality detection device for water-stopping casing for coal mine water exploration and drainage according to claim 5, characterized in that: The outer peripheral portion (8) and the middle peripheral portion (6) are made of rubber material.

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