CN114412376A - Threaded connection device with bidirectional sealing function - Google Patents
Threaded connection device with bidirectional sealing function Download PDFInfo
- Publication number
- CN114412376A CN114412376A CN202111480189.5A CN202111480189A CN114412376A CN 114412376 A CN114412376 A CN 114412376A CN 202111480189 A CN202111480189 A CN 202111480189A CN 114412376 A CN114412376 A CN 114412376A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- cooling
- fixed
- fixing
- connection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 91
- 230000003014 reinforcing effect Effects 0.000 claims description 40
- 239000000498 cooling water Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 238000005553 drilling Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a threaded connection device with a bidirectional sealing function, which comprises a drill bit, a fixed shaft and a threaded column, wherein the threaded column is arranged inside the drill bit, the fixed shaft is arranged at the upper end of the threaded column, the diameter of the connection end of the threaded column and the fixed shaft is gradually reduced from the diameter of the connection end to the diameter of the other end of the connection end, a sealing structure is arranged on the side surface of the fixed shaft, an anti-falling structure is arranged at the bottom of the threaded column, and a cooling structure and a return pipe are arranged inside the drill bit; when the drill bit meets hard objects in the working process, the rotating speed of the drill bit is suddenly reduced, the fixing rod can move under the action of inertia, the first fixing block and the second fixing block are pushed to move, the second fixing block is blocked by the cooling main pipe, and cooling water in the cooling main pipe enters the return pipe at the moment, so that the cooling water flows in the internal circulation of the drill bit, and the cooling effect on the drill bit is increased.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a threaded connection device with a bidirectional sealing function.
Background
When drilling the soil layer, the drill bit needs to be used, and generally be connected through threaded connection's mode between drill bit and the output shaft, and traditional threaded connection mode will make disconnection between drill bit and the output shaft when the resistance that the drill bit received is great, easily lead to the drill bit to drop in the drilling, simultaneously when drilling the soil layer, because the cooling water can not carry out the circulation flow in the drill bit, so the cooling water can only cool off the skin of drill bit, thereby lead to crossing the end to the cooling efficiency of drill bit, when the drill bit meets hard object, the frictional force of drill bit and object is too big, thereby very easily lead to the high temperature of drill bit, easily lead to the connection structure inefficacy scheduling problem of drill bit, thereby be unfavorable for the normal use of drill bit.
Disclosure of Invention
The invention aims to provide a threaded connection device with a bidirectional sealing function, so as to solve the problems that a drill bit is easy to fall off and the cooling efficiency is low when the drill bit is used in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a threaded connection device with a bidirectional sealing function comprises a drill bit, a fixed shaft and a threaded column, wherein the threaded column is arranged inside the drill bit, the fixed shaft is arranged at the upper end of the threaded column, the diameter of the connecting end of the threaded column and the fixed shaft is gradually reduced to the diameter of the other end of the connecting end, a sealing structure is arranged on the side face of the fixed shaft, an anti-falling structure is arranged at the bottom of the threaded column, a cooling structure and a backflow pipe are arranged inside the drill bit and communicated with the inside of the backflow pipe, an anti-deformation structure is arranged on the side face of the drill bit and connected with the drill bit by rotating the threaded column, and the side face of the threaded column is inclined, so that the thread length on the side face of the threaded column can be increased, the thread taper of the screw thread is reduced, the stress distribution of a joint thread area is changed, the torsional strength of the threaded column is increased, and the phenomenon of thread slipping is avoided, the bottom of the threaded column is provided with an anti-drop structure which is fixed by centrifugal force and is unloaded by inertia, thereby avoiding the phenomenon that the threaded column breaks away when in use, increasing the stability of the threaded column, the sealing structure can seal the inside of the drill bit, avoiding gas in the drill bit from flowing out, and simultaneously avoiding external foreign matters from entering the inside of the drill bit to pollute the inside of the drill bit, the cooling structure can cool the inside of the drill bit, the connecting end of the backflow pipe and the cooling structure is provided with a pressure valve, when the pressure in the cooling structure rises, the pressure valve can be opened, thereby leading water in the cooling structure to flow into the inside of the backflow pipe to heat the sealing structure, further increasing the sealing performance of the sealing structure, the anti-deformation structure can support the drill bit, reducing the side abrasion of the drill bit, and simultaneously supporting the drill bit, the phenomenon that the drill bit deforms due to the fact that the cooling structure for cooling water to flow deforms is avoided.
Further, seal structure includes locking cap and sealing ring, the side of fixed axle is provided with the fixture block, the fixture block is connected for the block with the locking cap, the locking cap is run through by the fixed axle, the lower extreme of locking cap is provided with the sealing ring, the embedded inside at the drill bit of installing of sealing ring, the locking cap screw thread sets up in the inside of drill bit, when fixing the drill bit, laminates screw thread post and locking cap simultaneously in the side of drill bit, fixes the drill bit then rotates the fixed axle, and the fixed axle will drive the locking cap through the fixture block and rotate this moment to accomplish the while of screw thread post and locking cap and fix, the sealing ring can seal the inside of drill bit, thereby avoid external impurity to enter into the inside of drill bit, avoid the air in the drill bit to flow to the external world simultaneously.
Furthermore, the backflow pipe is spiral, a top rod is arranged inside the upper end of the backflow pipe, the diameter of the top rod is smaller than that of the limiting hole, the limiting hole is formed inside the fixing cap at an equal angle, an air bag is arranged on the side face of the top rod, when the temperature in the drill bit is high, water of the cooling structure flows into the backflow pipe, due to the fact that the backflow pipe is arranged inside the drill bit, the flowing time of cooling water inside the drill bit can be prolonged, the cooling efficiency is improved, the drill bit is cooled timely, meanwhile, heat inside the drill bit can be collected by the cooling water, when the water flows out of the backflow pipe, due to the fact that the density of the lower end of the top rod is small, the top rod can move upwards under the buoyancy effect of the water and is embedded into the limiting hole, the fixing cap and the fixing shaft are prevented from rotating, thereby increase the stability of device, the steam of cooling water can flow into the inside of ejector pin simultaneously to make the gasbag expand, the gasbag can fill the clearance between drill bit and the locking nut, thereby guarantee the sealing performance of device.
Further, the anti-drop structure includes sill pillar, first spring and spacing post, the inside of sill pillar is isometric to be provided with first spring and spacing post, first spring is located the inboard of spacing post, spacing post slides and sets up in the inside of sill pillar, first spring can produce the pulling force to spacing post, thereby make spacing post shrink into the inside of sill pillar under normal temperature, can be continuous when the drill bit carries out the during operation rubs, thereby make the temperature of drill bit sharply rise, and can make the temperature rise in the sill pillar when the temperature of drill bit risees, atmospheric pressure in the sill pillar rises this moment, thereby promote spacing post and want to move the inside of embedding the drill bit outward, spacing post will carry on spacingly to the sill pillar this moment, thereby avoid appearing relative rotation between screw thread post and the drill bit, and then avoid the phenomenon that the drill bit drops to appear.
Further, a fixed rod is rotatably arranged on the side surface of the bottom column, a connecting column is telescopically arranged in the bottom column, the fixed rod is installed in a fixed channel in an embedded mode, the fixed channel is arranged in the drill bit, blocking strips are arranged on the upper side and the lower side of the fixed channel, a first fixed block and a second fixed block are slidably arranged in the fixed channel, a plurality of limiting grooves which are arranged in an inclined mode are arranged on the side surface of the first fixed block, the limiting grooves and the fixed rod are connected in a clamping mode, connecting rods are arranged at opposite ends of the first fixed block and the second fixed block, a second spring is arranged on the outer side of each connecting rod, the inner portion of the fixed channel is communicated with a cooling structure, when the drill bit is operated, the fixed rod can be subjected to centrifugal force along with the rotation of the drill bit and the fixed shaft, and accordingly the fixed rod is embedded in the fixed channel, when the fixed rod needs to be taken out, the drill bit needs to be reversely rotated to the maximum speed, then the drill bit is stopped, the fixed rod continues to move under the action of inertia, the kinetic energy of the fixed rod is larger than the friction force of the fixed rod and the blocking strip, so that the fixed rod is restored to the original position, when the fixed rod is positioned in the fixed channel, the fixed rod can limit the positions of the bottom column and the threaded column, the threaded column is prevented from moving up and down, the thread column and the drill bit are prevented from falling off, when the drill bit and the bottom column normally work, the bottom column normally rotates, so that the fixed rod can be embedded into a limiting groove in the normal position, the positions of the first fixed block, the connecting rod and the second fixed block are not influenced, when the drill bit normally works, the connecting column is also pushed to move upwards due to the temperature rise in the bottom column, therefore, the fixed rod is effectively limited, the connecting rod is connected, when the drill bit meets hard objects, the resistance of the drill bit is suddenly increased to cause the speed of the drill bit to be reduced, meanwhile, the friction force borne by the drill bit is also increased to cause the temperature of the drill bit to be increased, when the speed of the drill bit is suddenly reduced, the fixed rod swings under the action of inertia, the first fixed block is pushed to move when the fixed rod swings, meanwhile, the fixed rod is clamped with the adjacent limiting groove, because the rotating speed of the drill bit is low at the moment, and the friction force between the limiting groove and the fixed rod is large, the fixed rod cannot recover the original position, when the first fixed block moves, the connecting rod and the second fixed block are driven to move, at the moment, the second fixed block speeds the cooling structure, so that the water in the cooling structure flows into the inside of the backflow pipe, and the water circularly flows in the drill bit, the cooling efficiency of the drill bit is increased, and the phenomenon that the temperature of the drill bit is too high is avoided.
Furthermore, the cooling structure comprises a cooling main pipe and a cooling branch pipe, the cooling main pipe and the cooling branch pipe are arranged inside the drill bit, the side surface of the cooling main pipe is provided with a plurality of cooling branch pipes, one end of the cooling main pipe is provided with a connecting pipe, the other end of the connecting pipe is connected with a fixed shaft, the outer side of the other end of the connecting pipe is provided with a plurality of water outlets, the lower end of the side surface of the drill bit is provided with an inclined flow channel, cooling water flows into the inside of the cooling main pipe from the fixed shaft and then flows into the inside of the cooling branch pipe through the cooling main pipe, so that the cooling efficiency of the drill bit is increased, when the cooling water normally flows, the cooling water can flow out from the water outlets below, as the water outlets are arranged at the inner side and the outer side of the water outlets is provided with an inclined upward flow channel, so that earth can be prevented from entering the inside of the water outlets, and the earth water below can be wetted when being sprayed out, thereby be convenient for the drilling of drill bit, and when the drill bit met hard object, the second fixed block can be responsible for the cooling and block up to make the inside of the interior inflow reflux pipe of cooling water follow cooling main pipe, increase the cooling effect of cooling water to the drill bit.
Further, shape structure of preapring for an unfavorable turn of events includes the reinforcing plate, the inside block of lower surface of reinforcing plate is provided with the limiting plate, angle settings such as limiting plate are in the side of drill bit, the fixed orifices has been seted up to the inside of reinforcing plate, the position of fixed orifices and cooling branch pipe overlaps mutually, through laminating the reinforcing plate in the side of drill bit, with drill bit and limiting plate block simultaneously, the position of fixed orifices will overlap with the position of cooling branch pipe this moment to utilize the implementation to pass the fixed orifices and be connected with cooling branch pipe, and then fix the reinforcing plate, the reinforcing plate is installed by down to down.
Further, the reinforcing plate is the semicircle ring shape, the reinforcing plate is provided with a plurality of, the reinforcing plate from top to bottom frame degree reduces gradually, because the reinforcing plate props the semicircle ring shape, and the outside of reinforcing plate is the arc, so can push earth to both sides after reinforcing plate and earth contact, be convenient for drill, because the reinforcing plate is the semicircle ring shape, so the reinforcing plate and the effect that has mutual support of ortho-position reinforcing plate to avoid the reinforcing plate to extrude the shape that the inboard drill bit leads to the drill bit, the cooling is responsible for and the cooling branch pipe and change.
Compared with the prior art, the invention has the following beneficial effects: when the drill bit is used, when the drill bit meets a hard object in the working process, the rotating speed of the drill bit is suddenly reduced, the fixing rod can move under the action of inertia, so that the first fixing block and the second fixing block are pushed to move, the second fixing block blocks the cooling main pipe, cooling water in the cooling main pipe enters the inside of the return pipe, the cooling water circularly flows in the drill bit, the cooling effect on the drill bit is improved, meanwhile, the ejector rod is pushed by water to move upwards, so that the ejector rod is embedded into the limiting hole, the stability between the drill bit and the fixing cap and the fixing shaft is improved, meanwhile, hot gas enters the inside of the ejector rod and the air bag, a gap between the fixing cap and the drill bit is sealed, and the sealing performance of the device is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall front cross-sectional structural view of the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the threaded post and locking cap assembly of the present invention;
FIG. 3 is a top cross-sectional structural view of the present invention with the bottom pillar and first spring installed;
FIG. 4 is a top cross-sectional view of the drill bit and bottom post mounting of the present invention;
FIG. 5 is a schematic top view of the mounting structure of the drill bit and reinforcing plate of the present invention;
FIG. 6 is an enlarged schematic view of FIG. 1 at A in accordance with the present invention;
FIG. 7 is an enlarged view of FIG. 1 at B of the present invention;
FIG. 8 is a top cross-sectional structural schematic view of the drill bit and bladder of the present invention.
In the figure: 1. a drill bit; 2. a fixed shaft; 3. a threaded post; 4. a fixing cap; 5. a limiting hole; 6. a seal ring; 7. a bottom pillar; 8. a first spring; 9. a limiting column; 10. connecting columns; 11. fixing the rod; 12. a fixed way; 13. blocking strips; 14. a first fixed block; 15. a limiting groove; 16. a connecting rod; 17. a second spring; 18. a second fixed block; 19. cooling the main pipe; 20. a connecting pipe; 21. a water outlet; 22. a flow channel; 23. a return pipe; 24. a top rod; 25. an air bag; 26. cooling the branch pipe; 27. a reinforcing plate; 28. a fixing hole; 29. a limiting plate; 30. and (7) clamping blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions: a threaded connection device with a bidirectional sealing function comprises a drill bit 1, a fixed shaft 2 and a threaded column 3, wherein the threaded column 3 is arranged inside the drill bit 1, the fixed shaft 2 is arranged at the upper end of the threaded column 3, the diameter of the connecting end of the threaded column 3 and the fixed shaft 2 is gradually reduced from the diameter to the diameter of the other end, a sealing structure is arranged on the side surface of the fixed shaft 2, an anti-falling structure is arranged at the bottom of the threaded column 3, a cooling structure and a return pipe 23 are arranged inside the drill bit 1, the cooling structure is communicated with the inside of the return pipe 23, an anti-deformation structure is arranged on the side surface of the drill bit 1, the threaded column is connected with the drill bit 1 by rotating the threaded column 3, the side surface of the threaded column 3 is inclined, so that the thread length of the side surface of the threaded column 3 can be increased, the thread taper is reduced, the stress distribution of a joint threaded area is changed, the torsional strength of the threaded column 3 is increased, and the phenomenon of thread slipping is avoided, the bottom of the threaded column 3 is provided with an anti-falling structure which is fixed through centrifugal force and detached through inertia, so that the phenomenon that the threaded column 3 is separated when in use is avoided, the stability of the threaded column 3 is improved, the sealing structure can seal the inside of the drill bit 1 to prevent gas in the drill bit 1 from flowing out, and simultaneously prevent external foreign matters from entering the inside of the drill bit 1 to pollute the inside of the drill bit 1, the cooling structure can cool the inside of the drill bit 1, the connecting end of the return pipe 23 and the cooling structure is provided with a pressure valve, when the pressure in the cooling structure rises, the pressure valve is opened, so that water in the cooling structure flows into the inside of the return pipe 23 to heat the sealing structure, the sealing performance of the sealing structure is improved, the anti-deformation structure can support the drill bit 1, and the side abrasion of the drill bit 1 is reduced, meanwhile, the drill bit 1 can be supported, and the phenomenon that the drill bit 1 deforms due to the fact that a cooling structure for cooling water to flow deforms is avoided.
Seal structure includes locking cap 4 and sealing ring 6, the side of fixed axle 2 is provided with fixture block 30, fixture block 30 is connected for the block with locking cap 4, locking cap 4 is run through by fixed axle 2, the lower extreme of locking cap 4 is provided with sealing ring 6, the inside at drill bit 1 is installed to sealing ring 6 embedded, 4 screw threads of locking cap set up the inside at drill bit 1, when fixing to drill bit 1, laminate threaded post 3 and locking cap 4 simultaneously in the side of drill bit 1, fix then rotate fixed axle 2 with drill bit 1, fixed axle 2 will drive locking cap 4 through fixture block 30 this moment and rotate, thereby accomplish threaded post 3 and locking cap 4 fixed simultaneously, sealing ring 6 can seal the inside of drill bit 1, thereby avoid external impurity to enter into the inside of drill bit 1, avoid the air in the drill bit 1 to flow to the external world simultaneously.
The backflow pipe 23 is spiral, the top end of the backflow pipe 23 is internally provided with a mandril 24, the diameter of the mandril 24 is smaller than that of the limiting hole 5, the limiting hole 5 is arranged in the fixing cap 4 at an equal angle, the side surface of the mandril 24 is provided with an air bag 25, when the temperature in the drill bit 1 is higher, water of a cooling structure flows into the backflow pipe 23, the backflow pipe 23 is arranged in the drill bit 1 in a threaded manner, so that the flowing time of cooling water in the drill bit 1 can be prolonged, the cooling efficiency is improved, the drill bit 1 is cooled timely, meanwhile, the cooling water can collect heat in the drill bit 1, when the water flows out of the backflow pipe 23, the mandril 24 can move upwards under the buoyancy action of the water and is embedded in the limiting hole 5, so that the fixing cap 4 and the fixing shaft 2 can be prevented from rotating with the fixing shaft 2 and the fixing cap 4, thereby increasing the stability of device, the steam of cooling water can flow into the inside of ejector pin 24 simultaneously to make gasbag 25 expand, gasbag 25 can fill the clearance between drill bit 1 and the locking cap 4, thereby guarantee the sealing performance of device.
The anti-drop structure comprises a bottom column 7, a first spring 8 and a limiting column 9, wherein the first spring 8 and the limiting column 9 are arranged in the bottom column 7 at equal angles, the first spring 8 is positioned at the inner side of the limiting column 9, the limiting column 9 is arranged in the bottom column 7 in a sliding manner, the first spring 8 can generate pulling force on the limiting column 9, so that the limit column 9 is retracted into the bottom column 7 at normal temperature, and the drill bit 1 can continuously rub when working, so that the temperature of the drill bit 1 is sharply increased, and when the temperature of the drill bit 1 is increased, the temperature inside the bottom pillar 7 is increased, and the air pressure inside the bottom pillar 7 is increased, thereby pushing the limit post 9 to move outwards and embed into the drill bit 1, at the moment, the limit post 9 limits the bottom post 7, thereby avoiding the relative rotation between the threaded column 3 and the drill bit 1 and further avoiding the falling-off phenomenon of the drill bit 1.
The side of the bottom column 7 is rotatably provided with a fixed rod 11, the inside of the bottom column 7 is telescopically provided with a connecting column 10, the fixed rod 11 is embedded in a fixed channel 12, the fixed channel 12 is arranged in the drill bit 1, the upper side and the lower side of the fixed channel 12 are provided with stop strips 13, the inside of the fixed channel 12 is slidably provided with a first fixed block 14 and a second fixed block 18, the side of the first fixed block 14 is provided with a plurality of inclined limiting grooves 15, the limiting grooves 15 and the fixed rod 11 are in clamping connection, the opposite ends of the first fixed block 14 and the second fixed block 18 are provided with connecting rods 16, the outer side of the connecting rods 16 is provided with second springs 17, the inside of the fixed channel 12 is communicated with a cooling structure, when the drill bit 1 works, along with the rotation of the drill bit 1 and the fixed shaft 2, the fixed rod 11 can be subjected to centrifugal force, so that the fixed rod 11 is embedded in the fixed channel 12, when the fixing rod 11 needs to be taken out, the drill bit 1 needs to be reversely rotated to the maximum speed, then the drill bit 1 is stopped, at the moment, the fixing rod 11 continues to move under the inertia effect, and the kinetic energy possessed by the fixing rod 11 is larger than the friction force of the fixing rod 11 and the blocking strip 13, so that the fixing rod 11 is restored to the original position, when the fixing rod 11 is positioned inside the fixing channel 12, the fixing rod 11 can limit the positions of the bottom column 7 and the threaded column 3, the threaded column 3 is prevented from moving up and down, the threaded column 3 and the drill bit 1 are prevented from falling off, when the drill bit 1 and the bottom column 7 normally work, the bottom column 7 normally rotates, so the fixing rod 11 is embedded into the limiting groove 15 in the normal position, the positions of the first fixing block 14, the connecting rod 16 and the second fixing block 18 cannot be influenced, when the drill bit 1 normally works, because the temperature in the bottom column 7 rises, the connecting column 10 is also pushed to move upwards, so that the fixed rod 11 is effectively limited, the connecting column 10, when the drill bit 1 encounters a hard object, the resistance of the drill bit 1 is suddenly increased, so that the speed of the drill bit 1 is reduced, meanwhile, the friction force borne by the drill bit 1 is also increased, so that the temperature of the drill bit 1 is increased, when the speed of the drill bit 1 is suddenly reduced, the fixed rod 11 swings under the inertia effect, the first fixed block 14 is pushed to move when the fixed rod 11 moves and swings, meanwhile, the fixed rod 11 is clamped with the adjacent position limiting groove 15, because the rotating speed of the drill bit 1 is lower at the moment, and the friction force between the limiting groove 15 and the fixed rod 11 is larger, the fixed rod 11 cannot be restored to the original position, when the first fixed block 14 moves, the connecting rod 16 and the second fixed block 18 are driven to move, at this time, the second fixing block 18 speeds up the cooling structure, so that water in the cooling structure flows into the return pipe 23, the water circularly flows in the drill bit 1, the cooling efficiency of the drill bit 1 is increased, and the phenomenon that the temperature of the drill bit 1 is too high is avoided.
The cooling structure comprises a cooling main pipe 19 and cooling branch pipes 26, the cooling main pipe 19 and the cooling branch pipes 26 are arranged inside the drill bit 1, a plurality of cooling branch pipes 26 are arranged on the side surface of the cooling main pipe 19, a connecting pipe 20 is arranged at one end of the cooling main pipe 19, the other end of the connecting pipe 20 is connected with the fixed shaft 2, a plurality of water outlets 21 are arranged on the outer side of the other end of the connecting pipe 20, an inclined flow passage 22 is arranged at the lower end of the side surface of the drill bit 1, cooling water flows into the cooling main pipe 19 from the fixed shaft 2 and then flows into the cooling branch pipes 26 through the cooling main pipe 19, so that the cooling efficiency of the drill bit 1 is increased, when the cooling water normally flows, the cooling water can flow out from the water outlets 21 below, because the water outlets 21 are arranged on the inner side, and the outer side of the water outlets 21 is provided with the flow passages 22 which are inclined upwards, so that soil can be prevented from entering the water outlets 21, when the water is sprayed out, soil below the drill bit 1 can be wetted, so that the drill bit 1 can be conveniently drilled, and when the drill bit 1 encounters a hard object, the second fixing block 18 can block the cooling main pipe 19, so that the cooling water flows into the return pipe 23 from the cooling main pipe 19, and the cooling effect of the cooling water on the drill bit 1 is improved.
Anti-deformation structure includes reinforcing plate 27, the inside block of lower surface of reinforcing plate 27 is provided with limiting plate 29, angle settings such as limiting plate 29 are in the side of drill bit 1, fixed orifices 28 has been seted up to reinforcing plate 27's inside, the position of fixed orifices 28 and cooling branch pipe 26 overlaps mutually, through laminating reinforcing plate 27 in the side of drill bit 1, simultaneously with drill bit 1 and limiting plate 29 block, the position of fixed orifices 28 will overlap with the position of cooling branch pipe 26 this moment, thereby utilize the reality to pass fixed orifices 28 and be connected with cooling branch pipe 26, and then fix reinforcing plate 27, reinforcing plate 27 is installed by following to down.
Reinforcing plate 27 is the semicircle ring shape, reinforcing plate 27 is provided with a plurality of, reinforcing plate 27 from top to bottom frame degree reduces gradually, because reinforcing plate 27 props the semicircle ring shape, and the outside of reinforcing plate 27 is the arc, so can push earth to both sides after reinforcing plate 27 and earth contact, be convenient for drill, because reinforcing plate 27 is the semicircle ring shape, so reinforcing plate 27 and ortho-position reinforcing plate 27 have the effect of mutual support, thereby avoid reinforcing plate 27 to extrude inboard drill bit 1 and lead to drill bit 1, the shape of cooling person in charge 19 and cooling branch pipe 26 changes.
The working principle of the invention is as follows: after the drill bit 1 is installed, the connecting position of the drill bit 1 and the threaded column 3 is sealed through a sealing structure, then the fixing rod 11 is moved to the inside of the fixing channel 12 through centrifugal force, the fixing rod 11 can limit the threaded column 3, and the phenomenon that the threaded column 3 falls off from the drill bit 1 due to the fact that the threaded column 3 moves up and down is avoided;
when the drill bit 1 works normally, the internal temperature of the drill bit 1 can rise, so that the limiting column 9 can be pushed to move to increase the stability between the drill bit 1 and the threaded column 3, and meanwhile, the connecting column 10 is pushed to move to limit the fixed rod 11, so that the phenomenon that the fixed rod 11 is staggered is avoided;
when the drill bit 1 meets a hard object in the working process, the rotating speed of the drill bit 1 is suddenly reduced, at the moment, the fixing rod 11 can move under the action of inertia, the first fixing block 14 and the second fixing block 18 are pushed to move, the second fixing block 18 blocks the cooling main pipe 19, at the moment, cooling water in the cooling main pipe 19 enters the return pipe 23, the internal circulation flow of the cooling water at the drill bit 1 is realized, the cooling effect on the drill bit 1 is increased, meanwhile, when the water pushes the ejector rod 24 to move upwards, the ejector rod 24 is embedded into the limiting hole 5, the stability between the drill bit 1 and the fixing cap 4 and the fixing shaft 2 is improved, meanwhile, hot air can enter the ejector rod 24 and the air bag 25, the gap between the fixing cap 4 and the drill bit 1 is sealed, and the sealing performance of the device is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a threaded connection device with two-way sealing function, includes drill bit (1), fixed axle (2) and screw thread post (3), its characterized in that: the inside of drill bit (1) is provided with screw thread post (3), the upper end of screw thread post (3) is provided with fixed axle (2), the diameter of screw thread post (3) and the link of fixed axle (2) reduces to other end diameter gradually, the side of fixed axle (2) is provided with seal structure, the bottom of screw thread post (3) is provided with the anti-drop structure, the inside of drill bit (1) is provided with cooling structure and back flow (23), the inside of cooling structure and back flow (23) is linked together, the side of drill bit (1) is provided with anti-deformation structure.
2. A screw connection device having a bidirectional sealing function according to claim 1, wherein: the sealing structure comprises a fixing cap (4) and a sealing ring (6), a clamping block (30) is arranged on the side face of the fixing shaft (2), the clamping block (30) is connected with the fixing cap (4) in a clamping mode, the fixing cap (4) is penetrated through by the fixing shaft (2), the sealing ring (6) is arranged at the lower end of the fixing cap (4), the sealing ring (6) is installed in the drill bit (1) in an embedded mode, and the fixing cap (4) is arranged in the drill bit (1) in a threaded mode.
3. A screw connection device having a bidirectional sealing function according to claim 2, wherein: the backflow pipe (23) is spiral, a push rod (24) is arranged inside the upper end of the backflow pipe (23), the diameter of the push rod (24) is smaller than that of the limiting hole (5), the limiting hole (5) is formed inside the fixing cap (4) at an equal angle, and an air bag (25) is arranged on the side face of the push rod (24).
4. A screw connection device having a bidirectional sealing function according to claim 1, wherein: the anti-drop structure includes foundation (7), first spring (8) and spacing post (9), the inside of foundation (7) is wait the angle and is provided with first spring (8) and spacing post (9), first spring (8) are located the inboard of spacing post (9), spacing post (9) slide and set up the inside at foundation (7).
5. A screw connection device having a bidirectional sealing function according to claim 4, wherein: a fixed rod (11) is rotatably arranged on the side surface of the bottom column (7), a connecting column (10) is telescopically arranged in the bottom column (7), the fixed rod (11) is embedded in the fixed channel (12), the fixed channel (12) is arranged in the drill bit (1), the upper side and the lower side of the fixed channel (12) are provided with a resistance strip (13), a first fixed block (14) and a second fixed block (18) are arranged inside the fixed channel (12) in a sliding manner, the side surface of the first fixed block (14) is provided with a plurality of limit grooves (15) which are arranged in an inclined way, the limiting groove (15) is connected with the fixing rod (11) in a clamping way, the opposite ends of the first fixing block (14) and the second fixing block (18) are provided with connecting rods (16), the outside of connecting rod (16) is provided with second spring (17), the inside and the cooling structure UNICOM of fixed way (12).
6. A screw connection device having a bidirectional sealing function according to claim 1, wherein: the cooling structure includes that cooling is responsible for (19) and cooling branch pipe (26), cooling is responsible for (19) and cooling branch pipe (26) and sets up in the inside of drill bit (1), and the side of cooling is responsible for (19) is provided with a plurality of cooling branch pipe (26), the one end that the cooling was responsible for (19) is provided with connecting pipe (20), the other end of connecting pipe (20) is connected with fixed axle (2), the other end outside of connecting pipe (20) is provided with a plurality of delivery port (21), runner (22) that are the slope form are seted up to the side lower extreme of drill bit (1).
7. A screw connection device having a bidirectional sealing function according to claim 6, wherein: the deformation structure of preapring for an unfavorable turn of events includes reinforcing plate (27), the inside block of lower surface of reinforcing plate (27) is provided with limiting plate (29), angle settings such as limiting plate (29) are in the side of drill bit (1), fixed orifices (28) have been seted up to the inside of reinforcing plate (27), the position of fixed orifices (28) and cooling branch pipe (26) overlaps mutually.
8. A screw connection device having a bidirectional sealing function according to claim 7, wherein: reinforcing plate (27) are half circular ring shape, reinforcing plate (27) are provided with a plurality of, reinforcing plate (27) from top to bottom frame degree reduces gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111480189.5A CN114412376B (en) | 2021-12-07 | 2021-12-07 | Threaded connection device with bidirectional sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111480189.5A CN114412376B (en) | 2021-12-07 | 2021-12-07 | Threaded connection device with bidirectional sealing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114412376A true CN114412376A (en) | 2022-04-29 |
| CN114412376B CN114412376B (en) | 2023-05-16 |
Family
ID=81266423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111480189.5A Active CN114412376B (en) | 2021-12-07 | 2021-12-07 | Threaded connection device with bidirectional sealing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114412376B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980451A (en) * | 1957-04-17 | 1961-04-18 | Atlas Pipe Inc | Threaded pipe joint having an extrudable generally non-resilient sealing means |
| CN110656889A (en) * | 2019-10-22 | 2020-01-07 | 李茂林 | Oil field drill bit with self-washing heat dissipation function |
| US10570674B1 (en) * | 2018-08-30 | 2020-02-25 | Black Gold Pump And Supply, Inc. | Rod string latching tool without integral release mechanism and method for use of same |
| CN210164438U (en) * | 2019-06-06 | 2020-03-20 | 烟台纳维新材料股份有限公司 | Multi-head middle support drilling device |
| CN211173979U (en) * | 2019-10-24 | 2020-08-04 | 王同林 | Anti-drop drilling rod for oil drilling |
| CN211258527U (en) * | 2019-10-22 | 2020-08-14 | 盈科(天津)科技有限公司 | Drill bit for oil development convenient to dismouting |
| CN215213360U (en) * | 2021-07-25 | 2021-12-17 | 苏州悍锐精密工具有限公司 | Efficient anti-seismic inner-cooling drill rod |
-
2021
- 2021-12-07 CN CN202111480189.5A patent/CN114412376B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980451A (en) * | 1957-04-17 | 1961-04-18 | Atlas Pipe Inc | Threaded pipe joint having an extrudable generally non-resilient sealing means |
| US10570674B1 (en) * | 2018-08-30 | 2020-02-25 | Black Gold Pump And Supply, Inc. | Rod string latching tool without integral release mechanism and method for use of same |
| CN210164438U (en) * | 2019-06-06 | 2020-03-20 | 烟台纳维新材料股份有限公司 | Multi-head middle support drilling device |
| CN110656889A (en) * | 2019-10-22 | 2020-01-07 | 李茂林 | Oil field drill bit with self-washing heat dissipation function |
| CN211258527U (en) * | 2019-10-22 | 2020-08-14 | 盈科(天津)科技有限公司 | Drill bit for oil development convenient to dismouting |
| CN211173979U (en) * | 2019-10-24 | 2020-08-04 | 王同林 | Anti-drop drilling rod for oil drilling |
| CN215213360U (en) * | 2021-07-25 | 2021-12-17 | 苏州悍锐精密工具有限公司 | Efficient anti-seismic inner-cooling drill rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114412376B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204041022U (en) | A kind of twofold whirl water pumping gas production downhole tool | |
| CN112833573B (en) | Medium-deep geothermal energy same-well balanced mining and irrigating heat exchange system and application | |
| CN102519283B (en) | Rotary heat exchanger with disturbance ball | |
| CN114412376A (en) | Threaded connection device with bidirectional sealing function | |
| CN111042756A (en) | Coring drilling tool suitable for hard and broken stratum | |
| CN211900529U (en) | Core drop prevention type coring drilling tool | |
| CN202382620U (en) | Rotary heat exchanger with disturbance balls | |
| CN104727770A (en) | Section milling type casing pipe sidetracking windowing tool | |
| CN110965967A (en) | Downhole fluid automatic control and water blocking integrated layered oil production pipe column and oil production method | |
| CN215809412U (en) | Geothermal heat exchange system | |
| CN113654253B (en) | Double-layer sleeve heat exchange device for geothermal well | |
| CN204476332U (en) | A kind of section milling formula casing side tracking window opening tool | |
| CN214371027U (en) | Heat exchange sleeve device for efficiently exploiting geothermal resources and geothermal single well system | |
| CN107620579A (en) | Downhole workover tool for horizontal well | |
| CN108105012A (en) | Utilize the water turbine equipment of river water nature flow electricity generation | |
| CN107100584B (en) | Water wheel type vibration well cementation tool | |
| CN114334376A (en) | Novel extra-high voltage oil-immersed transformer | |
| CN112815557A (en) | Heat exchange sleeve device for efficiently exploiting geothermal resources and geothermal single well system | |
| CN109441837B (en) | Energy-saving water pumping device | |
| CN209654016U (en) | A kind of watered-out well water drainage-gas recovery technology tubing string | |
| CN114837876B (en) | Sea wave collecting device based on rotating and swinging structure friction nano generator | |
| CN205316747U (en) | Water source heat transfer device | |
| CN104747139B (en) | Hydraulic drive type oil extraction system | |
| CN214913509U (en) | Condensation reflux distribution control device | |
| CN220851164U (en) | Air separation cold box engineering piping design structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A threaded connection device with bidirectional sealing function Granted publication date: 20230516 Pledgee: Haian Xinyuan rural small loan Co.,Ltd. Pledgor: NANTONG YONGDA PIPE INDUSTRY Co.,Ltd. Registration number: Y2024980022846 |