Automatic stopping control device for drilling water injection

Abstract

The application relates to the technical field of control devices, in particular to a drilling water injection automatic stop control device, which comprises an outer shell body, an inner shell body movably connected in the inner part of the outer shell body, and a self-tapping nail arranged between the outer shell body and the inner shell body and used for fixation; a water injection valve assembly is arranged on the upper side of the inner part of the inner shell body; a valve connecting device is arranged on the right side of the inner shell body, the device has a small volume, is convenient to move and erect, and can be fixed at any suitable position by only prolonging the water injection pipe and the water return pipe in the drilling. A series of problems caused by the failure to stop water in time are solved, for example, when the drilling water injection operation is carried out in the air inlet lane and the air return lane in the recovery roadway, the drilling under water injection operation enters the goaf due to the failure to stop water in time along with the recovery of the working face, water stop is difficult, resource materials are wasted, the artificial labor is large, and the risk coefficient is high.

Description

Technical Field

[0001] This invention relates to the field of control device technology, and in particular to an automatic stop control device for drilling water injection. Background Technology

[0002] In recent years, with the increasing demand for energy and the continuous intensification of mining, shallow resources are becoming increasingly scarce, and mines both domestically and internationally have successively entered the stage of deep resource mining. As coal mining depth continues to extend, fully mechanized longwall mining, coal seam extraction, and tunneling technologies are also developing rapidly. The severity of natural disasters such as coal dust, gas, rock bursts, coal and gas outbursts, and ground temperature fluctuations is also constantly escalating, leading to increasingly serious accidents. Domestic and international research and practice have proven that coal seam water injection is an effective method for proactively reducing dust generation. Coal seam water injection is a fundamental and comprehensive solution to the aforementioned safety problems. It not only reduces dust from coal cutting but also reduces the large amounts of dust generated during coal release and the raising, lowering, and moving of self-moving supports, while simultaneously improving the efficiency of other dust prevention and control measures. Traditional methods of sealing coal seam water injection holes use packaging cloth, quick-setting cement, etc. Although this method is relatively simple, the development of coal seam water injection technology is constrained by the fact that various mines in my country have successively entered deep mining, and prominent problems such as high stress of raw coal and rock, low permeability of coal seams, high gas content and high pressure.

[0003] Coal mines have a large number of equipment underground, and different types of workers have their own responsibilities. In some drilling and water injection work, it is necessary to have a dedicated person to open and close the valves in a timely manner. The traditional manual water shut-off method is inefficient and cannot achieve timely automatic water shut-off underground, which means that special personnel are needed to observe when water is shut off.

[0004] Chinese patent CN204436361U discloses an intelligent pressure and flow rate adjustment device for hydraulic fracturing in coal mines, which can accurately and stably control the injection pressure and flow rate in real time during hydraulic fracturing operations in coal mines, thereby improving the hydraulic fracturing effect.

[0005] The device uses pipelines, valves, and sensor control chips as its main control method. However, in coal mine underground operations, the underground working environment is harsh and the air is humid. The device contains a large number of electronic components, which are easily damaged when used in such a harsh environment, making it impossible to achieve a stable and efficient water injection control effect.

[0006] Therefore, an automatic stop control device for drilling water injection is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide an automatic stop control device for water injection in boreholes, which realizes the function of automatically controlling the water stop safely and conveniently when injecting water in boreholes, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automatic stop control device for drilling water injection, comprising an outer shell, an inner shell being movably connected inside the outer shell, and the outer shell and the inner shell being disposed and fixed by a self-tapping screw;

[0009] A water injection valve assembly is provided on the upper inner side of the inner shell;

[0010] A valve connection device is provided on the right side of the inner shell;

[0011] A valve control structure is provided on the lower side of the inner shell;

[0012] The valve control structure is used to realize the start and stop status of the water injection valve assembly, and the valve connection device is used to realize the operation status of the control device.

[0013] The valve control structure is movably connected to the inner shell, the water injection valve assembly is fixedly connected to the inner shell, the valve connecting device is fixedly connected to the inner shell, and the inner shell and outer shell have holes on their inner walls that fit the water injection valve assembly and the valve connecting device.

[0014] Preferably, the water injection valve assembly includes a pressure reducing valve, the upper end of which extends through holes in the inner and outer shells, a connector is connected to the left end of the pressure reducing valve, a ceramic valve is connected to the right end of the pressure reducing valve, and a short sleeve is threaded to the right end of the ceramic valve.

[0015] Preferably, a pipe clamp is fitted onto the outside of the short sleeve, a pad is provided on the rear side of the pipe clamp, and a hexagonal bolt passes through both ends of the pipe clamp. The hexagonal bolt passes through the pad and is fixed to the inner shell. A nut is connected to the external thread of the hexagonal bolt.

[0016] Preferably, a rubber pad is glued to the inner wall of the pipe clamp and the adjacent contact surface of the short sleeve, and a connector is also fixed to the right end of the short sleeve, which is connected and fixed to the valve connection device through the connector at the right end of the short sleeve.

[0017] Preferably, the valve connection device includes a throttle valve, and a rectangular fixing frame is fixed inside the inner shell at a position corresponding to the short sleeve. The throttle valve is located inside the fixing frame, and an ear plate is fixed on the front side of the fixing frame. A hexagonal bolt is inserted through the ear plate, and a nut is threaded between the front end of the hexagonal bolt and the ear plate.

[0018] Preferably, the left end of the throttle valve is connected to the connector of the short sleeve connection end, and the right end of the throttle valve extends through the hole opened at the right end of the inner shell.

[0019] Preferably, the valve control structure includes a switch disc composed of two circular discs, and the switch disc has an internal mounting hole. The longitudinal cross-section of the switch disc is T-shaped. A self-tapping screw is fixed between the two switch discs. A rope is wound between the two discs. The switch disc is sleeved on the outside of the ceramic valve through the mounting hole in the center, and the mounting hole matches and is fixed to the switch end of the ceramic valve.

[0020] Preferably, an L-shaped guide plate is fixed inside the inner housing on the lower side of the switch panel. The guide plate has a movable groove inside, and a pulley is rotatably connected in the movable groove. One end of the rope extends to the lower side of the guide plate through the movable groove and the pulley.

[0021] Preferably, a tray is horizontally hinged to the lower side of the guide plate and the inner shell, a torsion spring is sleeved on the outside of the hinge shaft at the hinge point between the tray and the inner shell, and a plastic water bottle is placed on the upper side of the tray.

[0022] Preferably, the end of the tray away from the hinge is fixed to the rope, the plastic water bottle is connected to the throttle valve via a hose, the bottom of the plastic water bottle extends to the outside of the shell via a hose, and a valve is fixed to one end of the hose.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The device of this application has a simple structure, is easy to manufacture and install, and has a low manufacturing cost. When using it, you only need to connect the device to the water injection pipe and return pipe in the borehole and fix it in a position that is convenient for workers to operate.

[0025] (2) The device of this application is small in size and easy to move and set up. It can be fixed in any suitable operating position simply by extending the water injection pipe and return pipe in the borehole. It solves a series of problems caused by the inability to stop water in time. For example, when drilling and injecting water in the intake and return airways of the mining roadway, as the working face is pushed forward, the boreholes that are carrying out water injection operations may enter the goaf area due to the inability to stop water in time, resulting in difficulty in stopping water, waste of materials, high labor intensity and high risk.

[0026] (3) The device of this application is simple and easy to operate. The water pressure is controlled by the pressure reducing valve. After the borehole is filled with water, the switch valve of the device can be clearly seen to indicate that the device is closed, indicating that the water filling is over. The construction is simple and easy to operate, and no professional personnel are required to operate it.

[0027] (4) The raw material cost of the device in this application is low, the structure is simple, and it can be reused while being easy to maintain and replace. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the water injection valve assembly of the present invention;

[0031] Figure 3 This is a diagram of the valve control structure of the present invention;

[0032] Figure 4 This is a structural view of the inner shell and outer shell of the present invention;

[0033] Figure 5 This is a structural view of the valve connection device of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Outer shell; 2. Inner shell; 3. Connector; 4. Pressure reducing valve; 5. Ceramic valve; 6. Short sleeve; 7. Pipe clamp; 8. One hex bolt; 9. One nut; 10. Washer block; 11. Guide plate; 12. One self-tapping screw; 13. Two hex bolts; 14. Two nuts; 15. Throttling valve; 16. Plastic water bottle; 17. Tray; 18. Hinge shaft; 19. Rope; 20. Two self-tapping screws; 21. Switch panel. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1 to 5 The present invention provides a technical solution:

[0038] An automatic stop control device for drilling water injection includes an outer shell 1, an inner shell 2 movably connected inside the outer shell 1, and the outer shell 1 and the inner shell 2 are disposed and fixed by self-tapping screws 12.

[0039] A water injection valve assembly is provided on the upper side of the inner shell 2;

[0040] A valve connection device is provided on the right side of the inner shell 2;

[0041] A valve control structure is provided on the lower side of the inner shell 2;

[0042] The valve control structure is used to realize the start and stop status of the water injection valve assembly, and the valve connection device is used to realize the operation status of the control device.

[0043] The valve control structure is movably connected to the inner shell 2, the water injection valve assembly is fixedly connected to the inner shell 2, the valve connecting device is fixedly connected to the inner shell 2, and the inner shell 2 and the inner wall of the outer shell 1 have holes that fit with the water injection valve assembly and the valve connecting device.

[0044] By adopting the above technical solution, the device of this application has a simple structure, is easy to manufacture and install, and has a low manufacturing cost. When using it, it is only necessary to connect the device to the water injection pipe and return pipe in the borehole and fix it in a position that is convenient for workers to operate.

[0045] Specifically, such as Figure 1 and Figure 2 As shown, the water injection valve assembly includes a pressure reducing valve 4. The upper end of the pressure reducing valve 4 extends through holes in the inner shell 2 and the outer shell 1. A connector 3 is connected to the left end of the pressure reducing valve 4. A ceramic valve 5 is connected to the right end of the pressure reducing valve 4. A short sleeve 6 is threaded to the right end of the ceramic valve 5. A pipe clamp 7 is sleeved on the outside of the short sleeve 6. A pad 10 is provided on the rear side of the pipe clamp 7. Hexagonal bolts 8 pass through both ends of the pipe clamp 7 and pass through the pad 10 to fix it to the inner shell 2. Nuts 9 are threaded to the outside of the hexagonal bolts 8. A rubber pad is glued to the inner wall of the pipe clamp 7 and the adjacent contact surface of the short sleeve 6. A connector 3 is also fixed to the right end of the short sleeve 6. The connector 3 at the right end of the short sleeve 6 is connected and fixed to the valve connection device.

[0046] Specifically, such as Figure 1 and Figure 5 As shown, the valve connection device includes a throttle valve 15. A rectangular frame is fixed inside the inner housing 2 at a position corresponding to the short sleeve 6. The throttle valve 15 is located inside the frame, and an ear plate is fixed to the front side of the frame. A hexagonal bolt 13 is inserted through the ear plate. A nut 14 is threaded between the front end of the hexagonal bolt 13 and the ear plate. The left end of the throttle valve 15 is connected to the connector 3 at the connection end of the short sleeve 6, and the right end of the throttle valve 15 extends through a hole opened at the right end of the inner housing 2.

[0047] By adopting the above technical solution, a circular hole is provided on the top of the outer casing 1 for installing the adjustment knob of the throttle valve 15, and a circular hole on the front is used to observe the status of the switch. The position of the ceramic valve 5 is observed to determine whether the water injection has reached the preset position.

[0048] The circular hole on the right side of the inner shell 2 is used to connect the connector 3 of the throttle valve 15 to the return pipe in the borehole. There is a circular hole on each side of the inner shell 2 to connect the water inlet device pipeline, so that the water inlet pipe connector 3, the water inlet pipe in the borehole and the two ends of the water inlet device are connected.

[0049] Specifically, such as Figure 1 and Figure 3 and Figure 4 As shown, the valve control structure includes a switch disc 21 composed of two circular discs, with mounting holes inside the switch disc 21. The longitudinal cross-section of the switch disc 21 is T-shaped. A self-tapping screw 20 is fixed between the two switch discs 21. A rope 19 is wound between the two discs forming the switch disc 21. The switch disc 21 is sleeved onto the outside of the ceramic valve 5 through the mounting hole in the center, and the mounting hole matches and is fixed to the switch end of the ceramic valve 5. An L-shaped guide plate 11 is fixed inside the inner shell 2, located below the switch disc 21. The guide plate 11 has an inner... The part has a movable groove, in which a pulley is rotatably connected. One end of the rope 19 extends through the movable groove and the pulley to the lower side of the guide plate 11. The lower side of the guide plate 11 is horizontally hinged to the inner shell 2 with a tray 17. A torsion spring is sleeved on the outside of the hinge shaft 18 at the hinge point between the tray 17 and the inner shell 2. A plastic water bottle 16 is placed on the upper side of the tray 17. The end of the tray 17 away from the hinge is fixed to the rope 19. The plastic water bottle 16 is connected to the throttle valve 15 through a hose. The bottom of the plastic water bottle 16 extends to the outside of the shell through the hose, and a valve is fixed at one end of the hose.

[0050] By adopting the above technical solution, the switch plate 21 is connected to the ceramic valve 5, and the guide plate 11 is fixed on the inner shell 2. The rope 19 on the switch plate 21 is then passed through the guide plate 11 and the pulley. The rope 19 outside the switch plate 21 is connected to one end of the tray 17 on the lower side of the plastic water bottle 16. The plastic water bottle 16 is fixed to the inner shell 2 by the tray 17 through the hinge shaft 18 and the torsion spring. The throttle valve 15 is connected to the plastic water bottle 16 inside the device using a PE hose. When the borehole is filled with water, the return pipe in the borehole starts to return water. The water flows through the throttle valve 15 into the plastic water bottle 16. The plastic water bottle 16 uses the weight of the flowing water to press down on the tray 17. The tray 17 flips downward around the hinge shaft 18 and pulls the rope 19 connected to the tray 17, causing the plastic water bottle 16 and the tray 17 to move downward, thereby rotating the switch plate 21. The rotation of the switch plate 21 drives the screw to turn and close the ceramic valve 5, thereby shutting off the water inlet device. If you want to control the automatic water shut-off time, you can control the return water speed through the knob on the throttle valve 15.

[0051] Working principle:

[0052] The water outlet device of this apparatus mainly consists of a pressure reducing valve 4, a ceramic valve 5, and a short sleeve 6. When filling with water, the connector 3 of the water inlet pipe is connected to the connector 3 of model KJR-10, and the water inlet pipe in the borehole is connected to the other end.

[0053] The switch plate 21 is connected to the ceramic valve 5, and the guide plate 11 is fixed to the inner housing 2. The rope 19 on the switch plate 21 is passed through the guide plate 11 and the pulley. The rope 19 on the outside of the switch plate 21 is connected to one end of the tray 17 on the lower side of the plastic water bottle 16. The plastic water bottle 16 is fixed to the inner housing 2 by the tray 17 through the hinge shaft 18 and the torsion spring. The throttle valve 15 is connected to the plastic water bottle 16 inside the device using a PE hose. When the borehole is filled with water, the return pipe in the borehole starts to return water. The water flows through the throttle valve 15 into the plastic water bottle 16. The plastic water bottle 16 uses the weight of the flowing water to press down on the tray 17. The tray 17 flips downward around the hinge shaft 18 and pulls the rope 19 connected to the tray 17, causing the plastic water bottle 16 and the tray 17 to move downward, thereby rotating the switch plate 21. The rotation of the switch plate 21 drives the screw to turn and close the ceramic valve 5, thereby shutting off the water inlet device. If you want to control the automatic water shut-off time, you can control the return water speed through the knob on the throttle valve 15.

[0054] The top of the outer casing 1 has a circular hole for installing the adjustment knob of the throttle valve 15, and the front circular hole is used to observe the status of the switch. By observing the position of the ceramic valve 5, it can be determined whether the water injection has reached the preset position.

[0055] The circular hole on the right side of the inner shell 2 is used to connect the connector 3 of the throttle valve 15 to the return pipe in the borehole. There is a circular hole on each side of the inner shell 2 to connect the water inlet device pipeline, so that the water inlet pipe connector 3, the water inlet pipe in the borehole and the two ends of the water inlet device are connected.

[0056] The procedure for using this device is as follows:

[0057] (1) Connect the water inlet pipe and water return pipe reserved in the borehole to the corresponding pipes on the device.

[0058] (2) Check the status of ceramic valve 5 to ensure that the valve is in the open position and that the water inlet pipe is flowing normally. If ceramic valve 5 is in the closed position, it should be manually adjusted to the open position.

[0059] (3) Turn on the water source switch, fill the drill hole and flow through the return pipe to the plastic water bottle 16, then drive the ceramic valve 5 to close, and stop the water filling.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic stop control device for drilling water injection, comprising a housing (1), characterized in that: The outer shell (1) is internally connected to the inner shell (2), and the outer shell (1) and the inner shell (2) are disposed and fixed by a self-tapping screw (12); A water injection valve assembly is provided on the upper side of the inner shell (2); A valve connection device is provided on the right side of the inner shell (2); A valve control structure is provided on the lower side of the inner shell (2); The valve control structure is used to realize the start and stop status of the water injection valve assembly, and the valve connection device is used to realize the operation status of the control device. The valve control structure is movably connected to the inner shell (2), the water injection valve assembly is fixedly connected to the inner shell (2), the valve connection device is fixedly connected to the inner shell (2), and the inner shell (2) and the inner wall of the outer shell (1) have holes that fit with the water injection valve assembly and the valve connection device; The valve control structure includes a switch plate (21) composed of two circular discs, and the switch plate (21) has an installation hole inside. The longitudinal section of the switch plate (21) is designed in a T-shape. A self-tapping screw (20) is fixed between the two switch plates (21). A rope (19) is wound between the two switch plates (21). The switch plate (21) is sleeved on the outside of the ceramic valve (5) through the installation hole opened in the center, and the installation hole matches and is fixed to the switch end of the ceramic valve (5). The inner housing (2) is located on the lower side of the switch panel (21) and has an L-shaped guide plate (11) fixed inside. The guide plate (11) has a movable groove inside and a pulley is rotatably connected inside the movable groove. One end of the rope (19) extends to the lower side of the guide plate (11) through the movable groove and the pulley. The lower side of the guide plate (11) is horizontally hinged to the inner shell (2) with a tray (17). A torsion spring is sleeved on the outside of the hinge shaft (18) at the hinge point between the tray (17) and the inner shell (2). A plastic water bottle (16) is placed on the upper side of the tray (17). The tray (17) is fixed to the rope (19) at the end away from the hinge. The plastic water bottle (16) is connected to the throttle valve (15) by a hose. The bottom of the plastic water bottle (16) extends to the outside of the shell through the hose, and a valve is fixed at one end of the hose.

2. The automatic stop control device for drilling water injection according to claim 1, characterized in that: The water injection valve assembly includes a pressure reducing valve (4), the upper end of which extends through a hole opened in the inner shell (2) and the outer shell (1). A connector (3) is connected to the left end interface of the pressure reducing valve (4), and a ceramic valve (5) is connected to the right end of the pressure reducing valve (4). A short sleeve (6) is threaded to the right end of the ceramic valve (5).

3. The automatic stop control device for drilling water injection according to claim 2, characterized in that: The short sleeve (6) is fitted with a pipe clamp (7), and a pad (10) is provided on the rear side of the pipe clamp (7). Both ends of the pipe clamp (7) are connected by an internal hexagonal bolt (8), and the internal hexagonal bolt (8) passes through the pad (10) and is fixed to the inner shell (2). The external thread of the internal hexagonal bolt is connected to a nut (9).

4. The automatic stop control device for drilling water injection according to claim 3, characterized in that: The inner wall of the pipe clamp (7) is bonded with a rubber pad to the adjacent contact surface of the short sleeve (6). The right end of the short sleeve (6) is also fixed with a connector (3), which is connected and fixed to the valve connection device through the connector (3) at the right end of the short sleeve (6).

5. The automatic stop control device for drilling water injection according to claim 4, characterized in that: The valve connection device includes a throttle valve (15). A rectangular frame is fixed inside the inner shell (2) at a position corresponding to the short sleeve (6). The throttle valve (15) is located inside the frame, and an ear plate is fixed on the front side of the frame. A hexagonal bolt (13) is installed through the ear plate. A nut (14) is threaded between the front end of the hexagonal bolt (13) and the ear plate.

6. The automatic stop control device for drilling water injection according to claim 5, characterized in that: The left end of the throttle valve (15) is connected to the connector (3) at the connection end of the short sleeve (6), and the right end of the throttle valve (15) extends through the hole opened at the right end of the inner shell (2).

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