Intelligent drainage system for shaft sinking

Abstract

The invention discloses an intelligent drainage system for shaft sinking, and relates to the technical field of shaft drainage. The device further comprises a supporting assembly and a drainage assembly. The supporting assembly comprises a fixing rod and a supporting plate. The fixing rod is fixed on the inner side wall of the outer cylinder, and the supporting plate is fixed between the inner cylinder and the outer cylinder; the drainage assembly comprises a central controller, an electromagnetic valve, a first driving pump, a drainage pipe, a water level detector, a storage box and a containing cavity. The central controller is fixed at the top of the storage box; the storage boxes are stacked between the outer cylinder and the inner cylinder, and a supporting plate is fixed between the storage boxes; a gap between the storage boxes forms a placement cavity; the driving pumps I are respectively fixed in the placing cavities; the electromagnetic valve is located in the storage box and fixed to the drainage pipe, and the drainage pipe extends into the storage box. The water level detector is slidably connected into the storage box; the displacement can be controlled according to the change of the water depth in the shaft, and collapse of the interior of the shaft due to the fact that a large amount of water is stored in the shaft in the shaft sinking process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wellbore drainage, and in particular to an intelligent drainage system for wellbore drilling. Background Art

[0002] The shaft is called the throat of the mine. It is the passage for mine workers and equipment to enter and exit the shaft and for mine ventilation. At present, the main methods of shaft construction include common method, freezing method, caisson method, drilling method, etc. When digging the shaft, it is inevitable to encounter water-bearing rock formations. When encountering water-bearing rock formations, a large amount of water and sediment may flow into the shaft, causing the shaft to be flooded or even cause collapse.

[0003] As the wellbore continues to deepen, a large amount of water will seep into the wellbore. The existing technology is to pump water out of the wellbore with a water pump, but the wellbore channel is long and the amount of water that the water pump can pump out is limited. When encountering water-bearing rock formations, a large amount of water will enter the wellbore in a short period of time, resulting in the inability to discharge the water in time. The water accumulated in the wellbore can easily cause the wellbore to collapse. Summary of the invention

[0004] The embodiment of the present application provides an intelligent drainage system for well drilling, which solves the problem that in the prior art, water pumps are usually used to pump water out of the wellbore, but the amount of water that the water pump can pump out is limited. When encountering water-bearing rock formations, a large amount of water will enter the wellbore in a short period of time, resulting in the drainage pump being unable to drain the water in time. The system can control the amount of drainage according to the change in the water depth inside the wellbore, thereby avoiding a large amount of water in the wellbore during the drilling process, which may cause the inside of the wellbore to collapse.

[0005] The embodiment of the present application provides a wellbore sinking intelligent drainage system, comprising an inner tube and an outer tube, wherein the inner tube is sleeved in the outer tube, and the outer tube is in contact with the side wall of the wellbore;

[0006] Also included are a support assembly and a drainage assembly;

[0007] The support assembly includes a fixing rod and a support plate;

[0008] The fixing rod is fixed on the inner side wall of the outer cylinder, and the supporting plate is fixed between the inner cylinder and the outer cylinder;

[0009] The support plate is used to support the storage box;

[0010] The drainage assembly includes a central controller, a solenoid valve, a driving pump, a drainage pipe, a water level detector, a storage box and a placement chamber;

[0011] The central controller is fixed on the top of a storage box, and there are multiple storage boxes, which are used to store accumulated water;

[0012] The storage box is stacked between the outer cylinder and the inner cylinder, and a support plate is fixed between the storage boxes;

[0013] The gaps between the storage boxes form a placement cavity;

[0014] There are multiple driving pumps, and each of the driving pumps is fixed in the placement cavity;

[0015] The solenoid valve is located in the storage box, the solenoid valve is fixed on the drain pipe, and the drain pipe extends into the storage box;

[0016] The water level detector is slidably connected in the storage box, and the water level detector is fixed on the annular foam plate.

[0017] Furthermore, a connecting pipe is rotatably connected to the drainage pipe;

[0018] The connecting pipe is located on the uppermost drain pipe, and is used to connect the drain pipe and the drain channel;

[0019] A gap is left between the bottom of the drain pipe and the bottom of the storage box, and the top of the drain pipe extends into the interior of another storage box.

[0020] Furthermore, the drainage pipe passes through the annular foam plate, and the annular foam plate is provided with a circular hole having the same diameter as the drainage pipe;

[0021] The annular foam plate is located near the bottom of the storage box, and the bottom surface of the annular foam plate is in contact with the solenoid valve.

[0022] Furthermore, the fixing rod is a rectangular rod, and a rectangular groove is provided on the outer side wall of the storage box;

[0023] The storage box can be slidably connected to the fixing rod, and the fixing rod can prevent the storage box from being offset between the inner cylinder and the outer cylinder.

[0024] Furthermore, the water level detector is in the shape of a circular ring, and is sleeved and fixed on the outer side wall of the circular foam plate;

[0025] A metal ring is fixed near the top of the storage box, and metal ring pieces are pasted on the upper and lower sides of the water level detector.

[0026] Furthermore, the solenoid valve is fixed at the outlet end of the drain pipe, and the solenoid valve can prevent the water in the upper storage tank from flowing into the lower storage line;

[0027] The storage box is an annular hollow box body, and the inner wall of the storage box is in close contact with the outer wall of the inner cylinder.

[0028] Furthermore, the support plate is a plurality of rectangular plates; the height of the support plate is greater than the height of the driving pump 1;

[0029] One end and the other end of the driving pump are connected to different storage boxes through drainage pipes;

[0030] The driving pump 1 can drive water from the lower storage tank into the upper storage tank.

[0031] Furthermore, two circular holes are respectively opened in the storage box and penetrate from top to bottom;

[0032] The drainage pipes pass through the circular holes on the storage box. The drainage pipes are located on the same axis, and the drainage pipes passing through different circular holes are parallel to each other.

[0033] Furthermore, the driving pump 1 is driven by a variable frequency motor, and the rotation speed of the driving pump 1 is controlled by a central processing unit.

[0034] Furthermore, two driving pumps are fixed in the placement cavity, and the placement cavity is divided into multiple chambers by a support plate.

[0035] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0036] The water level detector is driven to move up and down in the storage box by the annular foam plate. When the storage box is full of water, the metal ring sheet contacts the metal ring on the top of the storage box. After receiving the signal from the water level detector, the central processing unit controls the driving pump 1. The driving pump 1 discharges the water in the storage box into the upper storage box through the drainage pipe, which effectively solves the problem that the amount of water that can be pumped out by the water pump in the prior art is limited. When encountering water-bearing rock formations, a large amount of water will enter the wellbore in a short time, resulting in the drainage pump being unable to discharge the water in time, thereby achieving the control of the drainage volume according to the change of the water depth inside the wellbore, avoiding the collapse of the wellbore caused by a large amount of water in the wellbore during the well drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of an intelligent drainage system for well drilling according to the present invention;

[0038] Figure 2 A wellbore drilling intelligent drainage system according to the present invention Figure 1 A schematic cross-sectional structure diagram of;

[0039] Figure 3 A partial cross-sectional structural schematic diagram of a wellbore drilling intelligent drainage system according to the present invention;

[0040] Figure 4 A schematic diagram of the connection relationship between a storage box and a support plate of an intelligent drainage system for well drilling according to the present invention;

[0041] Figure 5A schematic diagram of a top view and cross-section structure of an intelligent drainage system for well drilling according to the present invention;

[0042] Figure 6 A schematic structural diagram of the connection relationship between a driving pump and a storage box of a wellbore sinking intelligent drainage system of the present invention;

[0043] Figure 7 A schematic structural diagram of the connection relationship between a water level detector and an annular foam plate of a wellbore sinking intelligent drainage system of the present invention;

[0044] Figure 8 A schematic diagram of the connection relationship between a central controller and a storage box of a wellbore sinking intelligent drainage system of the present invention;

[0045] Fig. 9 A schematic structural diagram of the connection relationship between a driving pump and a drainage pipe of an intelligent drainage system for well drilling according to the present invention;

[0046] Fig.10 A schematic diagram of the structure of an intelligent control system of a wellbore drilling intelligent drainage system according to the present invention;

[0047] Fig.11 The present invention is a schematic structural diagram of the connection relationship between a water level detector and a metal ring piece of an intelligent drainage system for well drilling.

[0048] In the figure: 100, support assembly; 101, inner cylinder; 102, outer cylinder; 103, fixing rod; 104, support plate;

[0049] 200, drainage assembly; 201, central controller; 202, solenoid valve; 203, drive pump 1; 204, drainage pipe; 205, water level detector; 206, storage box; 207, connecting pipe; 208, placement cavity; 209, annular foam board; 210, metal ring. DETAILED DESCRIPTION

[0050] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0051] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0053] like Figures 1 to 11 As shown, the present application proposes an intelligent drainage system for well drilling, including an inner tube 101 and an outer tube 102, wherein the inner tube 101 is sleeved in the outer tube 102, and the outer tube 102 is fitted with the side wall of the well; further comprising a support assembly 100 and a drainage assembly 200; the support assembly 100 comprises a fixing rod 103 and a supporting plate 104; the fixing rod 103 is fixed on the inner side wall of the outer tube 102, and the supporting plate 104 is fixed between the inner tube 101 and the outer tube 102; the supporting plate 104 is used to support a storage box 206; the drainage assembly 200 comprises a central controller 201, a solenoid valve 202, a driving pump 203, a drainage pipe 204, a water level detector 205, a storage box 206 and a placement cavity 208 ; The central controller 201 is fixed on the top of the storage box 206, and there are multiple storage boxes 206, which are used to store accumulated water; the storage boxes 206 are stacked between the outer cylinder 102 and the inner cylinder 101, and a support plate 104 is fixed between the storage boxes 206; the gap between the storage boxes 206 constitutes a placement cavity 208; there are multiple drive pumps 203, and the drive pumps 203 are respectively fixed in the placement cavity 208; the solenoid valve 202 is located in the storage box 206, and the solenoid valve 202 is fixed on the drain pipe 204, and the drain pipe 204 extends into the storage box 206; the water level detector 205 is slidably connected in the storage box 206, and the water level detector 205 is fixed on the annular foam plate 209.

[0054] Preferably, a connecting pipe 207 is rotatably connected to the drain pipe 204; the connecting pipe 207 is located on the uppermost drain pipe 204, and the connecting pipe 207 is used to connect the drain pipe 204 and the drainage channel; a gap is left between the bottom of the drain pipe 204 and the bottom of the storage box 206, and the top of the drain pipe 204 extends into another storage box 206. When the storage box 206 is full of water, the pump 203 is driven to discharge the water into the upper storage box 206. A certain amount of accumulated water can be retained in the lower storage box 206, thereby avoiding the upward shift of the center of gravity due to the large amount of accumulated water being transported to the storage box 206 near the upper side during the drainage process, causing the wellbore to collapse.

[0055] Preferably, the drain pipe 204 passes through the annular foam plate 209, and a circular hole with the same diameter as the drain pipe 204 is opened on the annular foam plate 209. The annular foam plate 209 can float on the water surface in the storage box 206, so that the annular foam plate 209 can move up and down according to the change of the water level. When the storage box 206 is full of water, the annular foam plate 209 moves to the top of the storage box 206, and the water level detector 205 transmits a signal to the central processing unit. The central processing unit controls the operation of the designated drive pump 203 according to the signal source, and transmits the water in the storage box 206 to the upper storage box 206 for temporary storage; the annular foam plate 209 is located near the bottom of the storage box 206, and the bottom surface of the annular foam plate 209 is in contact with the solenoid valve 202.

[0056] Preferably, the fixing rod 103 is a rectangular rod, and a rectangular groove is provided on the outer wall of the storage box 206; the storage box 206 can be slidably connected to the fixing rod 103, and the fixing rod 103 can prevent the storage box 206 from being offset between the inner tube 101 and the outer tube 102.

[0057] Preferably, the water level detector 205 is in the shape of a circular ring, and the water level detector 205 is sleeved and fixed on the outer wall of the annular foam plate 209; a metal ring is fixed near the top of the storage box 206, and metal ring pieces 210 are pasted on the upper and lower sides of the water level detector 205. When the annular foam plate 209 moves to the top of the storage box 206, the metal ring piece 210 and the metal ring contact to generate an electrical signal, and the water level detector 205 can sense the change of the electrical signal and send a signal to the central processing unit according to the change of the electrical signal.

[0058] Preferably, the solenoid valve 202 is fixed at the outlet end of the drain pipe 204, and the solenoid valve 202 can prevent the water in the upper storage box 206 from flowing into the lower storage line. When the lower storage box 206 is full of water, the solenoid valve 202 fixed in the drain pipe 204 leading to the upper storage box 206 opens, so that the water in the lower storage box 206 can enter the upper storage box 206; the storage box 206 is an annular hollow box body, and the inner wall of the storage box 206 is in contact with the outer wall of the inner cylinder 101.

[0059] Preferably, the support plate 104 is a plurality of rectangular plates; the height of the support plate 104 is greater than the height of the drive pump 203, and the drive pump 203 is fixed in a placement cavity 208 between the support plates 104; both ends of the drive pump 203 are respectively connected to different storage boxes 206 through drainage pipes 204; the drive pump 203 can drive water from the lower storage box 206 into the upper storage box 206.

[0060] Preferably, two circular holes are respectively opened in the storage box 206 and penetrate from top to bottom; the drainage pipe 204 passes through the circular holes on the storage box 206, and the drainage pipes 204 are located on the same axis. The drainage pipes 204 passing through different circular holes are parallel to each other. The central processing unit can judge the amount of water in the well according to the frequency of the signal sent by the water level detector 205. When multiple water level detectors 205 send signals to the central processing unit in a short period of time, it means that the amount of water in the well is large. At this time, the central processing unit controls the driving pump 203 to run simultaneously, thereby accelerating the speed of discharging the accumulated water.

[0061] Preferably, the driving pump 203 is driven by a variable frequency motor, and the rotation speed of the driving pump 203 is controlled by a central processing unit. Two driving pumps 203 are respectively fixed in the placement cavity 208, and the placement cavity 208 is divided into multiple chambers by a support plate 104. The central processing unit can adjust the rotation speed of the driving pump 203 according to the frequency of the signal sent by the water level detector 205. When a large amount of accumulated water enters the vertical shaft, the operating speed of the driving pump 203 is accelerated, thereby accelerating the speed of discharging the accumulated water from the wellbore.

[0062] When the wellbore drilling intelligent drainage system of the embodiment of the present application is actually used:

[0063] First, the accumulated water in the wellbore will first enter the storage box 206 at the bottom. As the water level in the storage box 206 rises, the annular foam plate 209 moves upward. When the annular foam plate 209 moves to the top of the storage box 206, the metal ring sheet 210 fixed on the annular foam plate 209 contacts the metal ring fixed in the storage box 206 and generates an electrical signal. The water level detector 205 can send instructions to the central processor according to the changes in the electrical signal. The central processor controls the driving pump 203 to operate according to the instructions to transport the accumulated water in the storage box 206 to the upper storage box 206. At this time, the solenoid valve 202 in the drainage pipe 204 leading to the upper storage box 206 is opened. When the frequency of the water level detector 205 sending instructions to the central processor becomes faster, the central processor controls the speed of the driving pump 203 to increase, and at the same time, the driving pump 203 in the placement cavity 208 on the same layer is opened, so that the accumulated water in the vertical shaft can be discharged quickly.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wellbore sinking intelligent drainage system, comprising an inner tube (101) and an outer tube (102), wherein the inner tube (101) is sleeved in the outer tube (102), and the outer tube (102) is in contact with a side wall of the wellbore; It is characterized in that Also included is a support assembly (100) and a drainage assembly (200); The support assembly (100) comprises a fixing rod (103) and a support plate (104); The fixing rod (103) is fixed on the inner side wall of the outer cylinder (102), and the supporting plate (104) is fixed between the inner cylinder (101) and the outer cylinder (102); The support plate (104) is used to support the storage box (206); The drainage assembly (200) comprises a central controller (201), a solenoid valve (202), a driving pump (203), a drainage pipe (204), a water level detector (205), a storage box (206) and a placement chamber (208); The central controller (201) is fixed on the top of a storage box (206), there are multiple storage boxes (206), and the storage boxes (206) are used to store accumulated water; The storage box (206) is stacked between the outer cylinder (102) and the inner cylinder (101), and a support plate (104) is fixed between the storage boxes (206); The gaps between the storage boxes (206) form a placement cavity (208); There are multiple driving pumps (203), and each of the driving pumps (203) is fixed in the placement cavity (208); The solenoid valve (202) is located in the storage box (206), the solenoid valve (202) is fixed on the drainage pipe (204), and the drainage pipe (204) extends into the storage box (206); The water level detector (205) is slidably connected in the storage box (206), and the water level detector (205) is fixed on the annular foam plate (209).

2. The intelligent drainage system for well drilling as claimed in claim 1, characterized in that: The drainage pipe (204) is rotatably connected to a connecting pipe (207); The connecting pipe (207) is located on the uppermost drainage pipe (204), and the connecting pipe (207) is used to connect the drainage pipe (204) and the drainage channel; A gap is left between the bottom of the drainage pipe (204) and the bottom of the storage box (206), and the top of the drainage pipe (204) extends into the interior of another storage box (206).

3. The intelligent drainage system for well drilling as claimed in claim 2, characterized in that: The drainage pipe (204) passes through the annular foam plate (209), and a circular hole having the same diameter as that of the drainage pipe (204) is provided on the annular foam plate (209); The annular foam plate (209) is located near the bottom of the storage box (206), and the bottom surface of the annular foam plate (209) is in contact with the solenoid valve (202).

4. The intelligent drainage system for well drilling as claimed in claim 1, characterized in that: The fixing rod (103) is a rectangular rod, and a rectangular groove is formed on the outer side wall of the storage box (206); The storage box (206) can be slidably connected to the fixing rod (103), and the fixing rod (103) can prevent the storage box (206) from being offset between the inner cylinder (101) and the outer cylinder (102).

5. The intelligent drainage system for well drilling as claimed in claim 3, characterized in that: The water level detector (205) is in the shape of a ring and is sleeved and fixed on the outer side wall of the ring-shaped foam plate (209); A metal ring is fixed near the top of the storage box (206), and metal ring pieces (210) are pasted on the upper and lower sides of the water level detector (205).

6. The intelligent drainage system for well drilling as claimed in claim 1, characterized in that: The solenoid valve (202) is fixed at the outlet end of the drain pipe (204), and the solenoid valve (202) can prevent water in the upper storage box (206) from flowing into the lower storage line; The storage box (206) is an annular hollow box body, and the inner wall of the storage box (206) is in close contact with the outer wall of the inner cylinder (101).

7. The intelligent drainage system for well drilling as claimed in claim 1, characterized in that: The support plate (104) is a plurality of rectangular plates; the height of the support plate (104) is greater than the height of the driving pump 1 (203); The two ends of the driving pump (203) are respectively connected to different storage boxes (206) through drainage pipes (204); The driving pump 1 (203) can drive water from the lower storage tank (206) into the upper storage tank (206).

8. The intelligent drainage system for well drilling as claimed in claim 7, characterized in that: The storage box (206) is provided with two circular holes extending from top to bottom. The drainage pipes (204) pass through the circular holes on the storage box (206). The drainage pipes (204) are located on the same axis, and the drainage pipes (204) passing through different circular holes are parallel to each other.

9. The intelligent drainage system for well drilling as claimed in claim 1, characterized in that: The driving pump 1 (203) is driven by a variable frequency motor, and the rotation speed of the driving pump 1 (203) is controlled by a central processing unit.

10. The intelligent drainage system for well drilling as claimed in claim 9, characterized in that: Two driving pumps (203) are respectively fixed in the placement chamber (208), and the placement chamber (208) is divided into a plurality of chambers by a support plate (104).

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