Underground coal mine drilling flushing fluid leakage observation device

Abstract

The utility model discloses an underground coal mine drilling flushing fluid leakage observation device, and relates to the technical field of geological drilling. The floating rod is slidably connected to the identification frame, and the bottom of the floating rod is a buoy; the observation frame is arranged on the bottom plate on the identification rack and is arranged on the observation frame; the main rod is vertically arranged and rotationally connected to the bottom plate; the auxiliary rod is vertically arranged and rotationally connected to the bottom plate, and a clamping groove is formed in the side wall of the auxiliary rod; the observation paper tube sleeves the main rod, and one end of the observation paper tube is clamped in the clamping groove; the top plate is mounted at the top end of the main rod and rotationally connected with a second insertion rod fixed relative to the auxiliary rod, and a driven gear is fixedly arranged at the top end of the second insertion rod; the driving motor is installed on the observation frame, a rotating shaft is fixedly provided with a driving gear, and the driving gear is meshed with the driven gear; and the identification pointer is rotationally connected to the top end of the floating mark rod and is provided with a torsional spring, so that the identification pointer is propped against the observation paper tube. The method has the effect of improving the accuracy of observing the leakage amount of the washing liquid and judging the water flowing fractured zone.

Description

Technical Field

[0001] The present application relates to the technical field of geological drilling, and in particular to a device for observing the leakage of drilling flushing fluid in underground coal mines. Background Art

[0002] During the drilling process in coal mines, flushing fluid is needed to flush the borehole and cool the drill bit.

[0003] Before drilling, a sedimentation tank and water source tank are pre-installed around the borehole. A circulation trough connects the sedimentation tank, water source tank, and borehole. Flushing fluid circulates between the borehole, sedimentation tank, and water source tank. If a positive circulation system is used, the flushing fluid is pumped to the bottom of the hole by a mud pump through a high-pressure hose and the inner bore of the drill string. It then returns to the surface through the bottom of the drill bit and the annular gap between the drill string and the hole wall.

[0004] During the positive circulation of the flushing fluid, a float indicator is installed in the water source tank to monitor the water level within the tank and, in turn, the amount of drilling fluid loss. Drilling fluid will penetrate the water-conducting fractures within the borehole, causing leakage. By observing the amount of drilling fluid loss, the height of the water-conducting fracture zone can be determined. Generally, the water level in the source tank is measured while the flushing fluid is circulating, and the current time and drilling depth are recorded. Measurements are taken again every 0.5 m of drilling progress, and a graph is plotted to determine the location of the water-conducting fracture zone.

[0005] During the actual observation process, recorders are required to observe and record in real time. Although the recorded values ​​can be recorded and plotted, a dynamic change curve cannot be obtained. The leakage rate can only be estimated and compared by average value, which leads to large observation errors. Utility Model Content

[0006] The purpose of the utility model proposed in this application is to improve the problem that the existing drilling flushing fluid leakage observation cannot obtain the leakage dynamic curve, which leads to large errors in the observation and judgment of the water-conducting fracture zone. This application provides a coal mine underground drilling flushing fluid leakage observation device.

[0007] The present application provides a device for observing the loss of drilling fluid in underground coal mines, which adopts the following technical solutions:

[0008] A device for observing the loss of drilling fluid in underground coal mines, comprising

[0009] A sign frame is provided on the top cover of the water source tank;

[0010] The buoy rod is slidably connected to the identification frame, with a float at the bottom. The float floats on the flushing liquid in the water source tank, and the buoy rod cannot rotate;

[0011] Observation frame, mounted on identification frame

[0012] Base plate, mounted on the observation frame;

[0013] The main rod is vertically arranged and rotatably connected to the base plate;

[0014] The auxiliary rod is vertically arranged and rotatably connected to the bottom plate. It is located on one side of the main rod and has a slot on its side wall.

[0015] The observation paper tube is mounted on the main rod and is wound with observation paper. One end of the observation paper is stuck in the card slot and the observation paper is engraved with scale lines.

[0016] The top plate has a first plug rod fixed at the bottom, the first plug rod is inserted into the top of the main rod, the bottom of the top plate is also rotatably connected to the second plug rod, the second plug rod is inserted into the top of the auxiliary rod and fixed relative to the auxiliary rod, the top end of the second plug rod is on the top plate and fixed with a driven gear;

[0017] The driving motor is mounted on the observation frame, and the rotating shaft is fixed with a driving gear, which is engaged with the driven gear;

[0018] The marking pointer is rotatably connected to the top of the buoy rod and is equipped with a torsion spring so that the marking pointer is pressed against the observation paper tube. The part where the marking pointer contacts the observation paper tube is a ballpoint ink pen that can leave lines on the observation paper tube.

[0019] Optionally, the bottom plate is slidably connected to the observation frame, the observation frame is provided with a tension spring, and the other end of the tension spring is fixedly connected to the bottom plate, so that the driven gear is engaged with the driving gear.

[0020] Optionally, a reinforcement plate is fixed on the upper surface of the bottom plate at a position between the main rod and the auxiliary rod. The reinforcement plate is also slidably connected to the observation frame, and the top plate can be clamped to the top of the reinforcement plate.

[0021] Optionally, the observation frame is vertically slidably connected to the identification frame, a sleeve is fixed at the bottom of the observation frame, the sleeve is slidably connected to the identification frame, a plurality of openings are provided at the bottom of the sleeve, a fastening sleeve is threadedly connected to the sleeve, and the fastening sleeve can be rotated upward to make the sleeve and the identification frame press tightly together. The identification frame is also provided with scale lines on one side of the observation frame.

[0022] Optionally, a plug-in plate is fixedly provided on the top plate, and a plug-in slot is provided on the observation frame. When the bottom plate and the observation frame are pressed against each other, the plug-in plate is located in the plug-in slot.

[0023] Optionally, the roller ball ink pen includes a rolling ball and an ink cartridge, the ink cartridge is installed on the side wall of the marking pointer, the interior of the ink cartridge is an ink chamber filled with ink, the rolling ball is rotatably connected to the running-in side wall and is connected to the bottom of the ink chamber, and the ink chamber is set at an angle.

[0024] Optionally, a nozzle communicating with the top of the ink chamber is provided on the top of the ink cartridge, and the nozzle is closed by a rubber plug.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When continuous observation of flushing fluid leakage is required, mark a scale corresponding to the observation paper tube on the identification frame and turn on the drive motor. The drive motor drives the auxiliary rod to rotate, and then drives the observation paper tube to rotate. During the rotation of the observation paper tube, the ballpoint ink pen contacts the observation paper tube and leaves an ink mark. As the float moves, a curve of the liquid level change over time is left on the observation paper tube. After the observation paper tube is removed, the leakage change curve can be observed intuitively, and the location of the water-conducting fracture zone and the leakage rate can be more accurately determined.

[0027] 2. After completing a fixed-point observation, the observation frame can be pulled out, the top plate can be opened, and the observation paper roll can be replaced. After the top plate is buckled, the plug-in plate can effectively improve the stability of the top plate after buckling, thereby improving the stability of the observation paper roll during rotation, so as to facilitate multiple experimental observations;

[0028] 3. The rotation of the ball causes the ink to be drawn onto the observation paper roll, thereby improving the uniformity of the ink on the observation paper roll and reducing the probability of large-area diffusion of the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of an embodiment of the present application;

[0030] Figure 2 It is a partial exploded view showing the socket;

[0031] Figure 3 It is a partial exploded view showing the fastening sleeve;

[0032] Figure 4 It is a partial cross-sectional view showing a rollerball ink pen.

[0033] In the figure, 1. identification frame; 2. buoy rod; 21. identification pointer; 22. ballpoint pen; 221. ink cartridge; 2211. nozzle; 2212. rubber plug; 222. ball; 3. observation frame; 31. bottom plate; 311. main rod; 312. auxiliary rod; 313. tension spring; 314. reinforcement plate; 32. observation paper tube; 33. top plate; 331. first plug rod; 332. second plug rod; 3321. driven gear; 333. plug-in plate; 34. drive motor; 341. driving gear; 35. sleeve; 351. fastening sleeve; 36. plug-in slot. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4This application is described in further detail.

[0035] The embodiment of the present application discloses a device for observing the loss of drilling flushing fluid in an underground coal mine.

[0036] refer to Figure 1 and Figure 2 The device for observing the loss of flushing fluid from boreholes in coal mines includes an indicator frame 1, a buoy rod 2, and an observation frame 3. The indicator frame 1 is mounted vertically on the top cover of a water source tank. The buoy rod 2 is slidably connected to the indicator frame 1 and has a float at its bottom that floats on the flushing fluid in the water source tank. The buoy rod 2 cannot rotate.

[0037] refer to Figure 2 and Figure 3 The observation frame 3 is vertically slidably connected to the identification frame 1, and the bottom of the observation frame 3 is horizontally slidably connected to the base plate 31. The main rod 311 and the auxiliary rod 312 are rotatably connected to the base plate 31. The main rod 311 and the auxiliary rod 312 are both vertically arranged. A slot is provided on the side wall of the auxiliary rod 312, and the top of the slot is open. An observation paper tube 32 is sleeved on the main rod 311. The observation paper tube 32 is wound with observation paper. One end of the paper roll of the observation paper tube 32 is stuck in the slot, and the observation paper is engraved with scale lines. A vertically arranged reinforcement plate 314 is fixed in the middle of the upper surface of the base plate 31, and the reinforcement plate 314 is also slidably connected to the observation frame 3. A top plate 33 is fastened to the top of the reinforcement plate 314, and a first insertion rod 331 is fixed on the lower surface of the top plate 33. The first insertion rod 331 is inserted into the top of the main rod 311. The top plate 33 is rotatably connected to a second plug rod 332, which is inserted into the top of the auxiliary rod 312 and fixed relative to the auxiliary rod 312. A driven gear 3321 is fixed to the part of the second plug rod 332 above the top plate 33. A plug-in plate 333 is fixed to the top plate 33, and a plug-in slot 36 is provided to the observation frame 3. When the bottom plate 31 and the observation frame 3 are pressed against each other, the plug-in plate 333 is located in the plug-in slot 36. The observation frame 3 is fixed with a drive motor 34, and the rotating shaft of the drive motor 34 is fixed with a driving gear 341. The observation frame 3 is fixed with a tension spring 313, and the other end of the tension spring 313 is fixedly connected to the bottom plate 31, so that the driving gear 341 is tightly engaged with the driven gear 3321. Scale lines are also vertically distributed on the identification frame 1.

[0038] The observation frame 3 is equipped with a fixing assembly that secures it to the marking frame 1. A marking pointer 21 is rotatably connected to the top of the buoy rod 2. This pointer 21 is equipped with a torsion spring, which ensures that the pointer 21 abuts against the observation paper tube 32. The contact between the pointer 21 and the observation paper tube 32 is achieved by a rollerball ink pen 22, which can leave a line on the observation paper tube 32.

[0039] After the observation paper tube 32 is installed, when the drilling rig reaches a certain depth and needs to observe the loss of flushing fluid, the drive motor 34 is turned on. The drive motor 34 drives the driving gear 341 to rotate, and then drives the auxiliary rod 312 to rotate through the meshing relationship of the driven gear 3321, so that the auxiliary rod 312 wraps around the observation paper, driving the main rod 311 to rotate, and then the ballpoint pen 22 can leave an ink mark on the observation paper, thereby forming a dynamic curve chart of time and flushing fluid water level. Before observing, it is necessary to record the relationship between the scale on the observation paper tube 32 and the scale line of the identification frame 1. In this way, not only can the water level in the water source tank be observed in real time, but also a curve chart of the change in flushing fluid loss can be directly obtained by removing the observation paper tube 32.

[0040] When the observation paper tube 32 needs to be replaced, the bottom plate 31 and the top plate 33 are pulled out to remove the observation paper tube 32. A new observation paper tube 32 is placed on the main rod 311 and the auxiliary rod 312 and then the top plate 33 is buckled. Then the tension spring 313 causes the driven gear 3321 to engage and tighten with the driving gear 341, thereby completing the replacement of the observation paper tube 32.

[0041] refer to Figure 3 The fixing assembly includes a sleeve 35 and a fastening sleeve 351. The sleeve 35 is fixed to the bottom of the observation frame 3 and has multiple openings. The fastening sleeve 351 is threaded onto the sleeve 35. Rotating the fastening sleeve 351 upward secures the sleeve 35 against the identification frame 1. This secures the observation frame 3 to the identification frame 1, allowing the observation frame to be adjusted in height to accommodate different positions of the identification pointer 21 and increase the observation range.

[0042] refer to Figure 4 The rollerball pen 22 includes an ink cartridge 221 and a rollerball 222. The ink cartridge 221 is mounted on the side wall of the marking pointer 21. The interior of the ink cartridge 221 contains an ink chamber filled with ink. The rollerball 222 is rotatably connected to the side wall and communicates with the bottom of the ink chamber. The ink chamber is tilted. A nozzle 2211 is located at the top of the ink cartridge 221 and communicates with the top of the ink chamber. The nozzle 2211 is sealed by a rubber plug 2212.

[0043] Ink can be poured into the ink chamber by opening rubber plug 2212 and then closed by replacing it. The ink in the ink chamber soaks the ink beads, which adhere to the observation paper as they roll against it. This reduces ink diffusion when the paper is stationary, improving its protection. Rotating the paper leaves a clear ink mark, facilitating observation.

[0044] The implementation principle of a device for observing the loss of flushing fluid in underground coal mine boreholes according to an embodiment of the present application is as follows: after drilling stops at the current depth and the flushing fluid circulates, the scale value on the observation paper tube 32 where the marking pointer 21 is located is recorded, and the time is recorded. The drive motor 34 begins to rotate the driving gear 341, which in turn rotates the auxiliary rod 312 via the driven gear 3321. The auxiliary rod 312 drives the observation paper to wrap around it and rotate the main rod 311, causing the ballpoint pen 22 to mark the location of the marking pointer 21 on the observation paper. After the observation is completed, the observation paper tube 32 is removed, and a dynamic curve diagram of the relationship between time and water level can be obtained on the observation paper, thereby improving the accuracy of the observation and judgment of the water-conducting fracture zone.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for observing the loss of drilling fluid in underground coal mines, characterized by: include A sign frame (1) is arranged on the top cover of the water source tank; The buoy rod (2) is slidably connected to the identification frame (1), and has a float at the bottom. The float floats on the flushing liquid in the water source tank, and the buoy rod (2) cannot rotate; Observation frame (3), mounted on the identification frame (1) A base plate (31) is mounted on the observation frame (3); A main rod (311) is vertically arranged and rotatably connected to the bottom plate (31); The auxiliary rod (312) is vertically arranged and rotatably connected to the bottom plate (31), and is located on one side of the main rod (311), with a slot provided on the side wall; An observation paper tube (32) is sleeved on the main rod (311) and is formed by winding observation paper, one end of which is clamped in the clamping groove and the observation paper is engraved with scale lines; The top plate (33) has a first plug rod (331) fixedly provided at the bottom thereof, the first plug rod (331) being inserted into the top of the main rod (311), the bottom of the top plate (33) being rotatably connected to a second plug rod (332), the second plug rod (332) being inserted into the top of the auxiliary rod (312) and being fixed relative to the auxiliary rod (312), the top end of the second plug rod (332) being on the top plate (33) and being fixedly provided with a driven gear (3321); A driving motor (34) is mounted on the observation frame (3), and a driving gear (341) is fixed to the rotating shaft, and the driving gear (341) is meshed with a driven gear (3321); The marking pointer (21) is rotatably connected to the top of the buoy rod (2) and is equipped with a torsion spring so that the marking pointer (21) and the observation paper tube (32) are tightly pressed against each other. The part where the marking pointer (21) and the observation paper tube (32) are in contact is a ballpoint ink pen (22) that can leave a line on the observation paper tube (32).

2. The device for observing the loss of drilling fluid in underground coal mines according to claim 1, characterized in that: The bottom plate (31) is slidably connected to the observation frame (3); the observation frame (3) is provided with a tension spring (313); the other end of the tension spring (313) is fixedly connected to the bottom plate (31), so that the driven gear (3321) is meshed with the driving gear (341).

3. The device for observing the loss of drilling fluid in underground coal mines according to claim 2, characterized in that: A reinforcing plate (314) is fixedly provided on the upper surface of the bottom plate (31) at a position between the main rod (311) and the auxiliary rod (312). The reinforcing plate (314) is also slidably connected to the observation frame (3), and the top plate (33) can be clamped with the top of the reinforcing plate (314).

4. The device for observing the loss of drilling fluid in underground coal mines according to claim 1, characterized in that: The observation frame (3) is vertically slidably connected to the identification frame (1); a sleeve (35) is fixedly provided at the bottom of the observation frame (3); the sleeve (35) is slidably connected to the identification frame (1); a plurality of openings are provided at the bottom of the sleeve (35); a fastening sleeve (351) is threadedly connected to the sleeve (35); the fastening sleeve (351) is rotated upward to enable the sleeve (35) to be tightly pressed against the identification frame (1); and the identification frame (1) is also provided with a scale line on one side of the observation frame.

5. The device for observing the loss of drilling fluid in underground coal mines according to claim 2, characterized in that: The top plate (33) is fixed with a plug-in plate (333), the observation frame (3) is provided with a plug-in slot (36), and when the bottom plate (31) and the observation frame (3) are pressed tightly, the plug-in plate (333) is located in the plug-in slot (36).

6. The device for observing the loss of drilling fluid in underground coal mines according to claim 1, characterized in that: The roller ball ink pen (22) comprises a rolling ball (222) and an ink cartridge (221). The ink cartridge (221) is mounted on the side wall of the marking pointer (21). The interior of the ink cartridge (221) is an ink cavity filled with ink. The rolling ball (222) is rotatably connected to the side wall of the running-in device and communicated with the bottom of the ink cavity. The ink cavity is arranged obliquely.

7. The device for observing the loss of drilling fluid in underground coal mines according to claim 6, characterized in that: The top of the ink cartridge (221) is provided with an injection port (2211) which is in communication with the top of the ink chamber, and the injection port (2211) is closed by a rubber plug (2212).

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