CN109779552B - Automatic start-stop mechanism of core drilling machine - Google Patents
Automatic start-stop mechanism of core drilling machine Download PDFInfo
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- CN109779552B CN109779552B CN201910186237.6A CN201910186237A CN109779552B CN 109779552 B CN109779552 B CN 109779552B CN 201910186237 A CN201910186237 A CN 201910186237A CN 109779552 B CN109779552 B CN 109779552B
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Abstract
The invention discloses an automatic starting and stopping mechanism of a core drilling machine, which comprises a center rod, a liquid channel starting module, an outer cylinder unlocking module and a flow blocking module, wherein the center rod penetrates through inner cavities of the liquid channel starting module, the outer cylinder unlocking module and the flow blocking module, the liquid channel starting module is arranged behind the outer cylinder unlocking module and the outer cylinder, and the liquid channel starting module is connected with the outer cylinder unlocking module. The automatic start-stop mechanism of the core drilling machine provided by the invention can be used for automatically communicating the hydraulic channel, contacting the constraint of the working part, cutting off the hydraulic channel after the working part reaches a specified position, stopping pressure supply, stopping drilling and releasing pressure.
Description
Technical Field
The invention relates to a drilling coring system, in particular to an automatic start-stop mechanism of a coring drilling machine.
Background
In the process of oil field exploration, a rock core is important data for finding an oil-gas layer, researching stratum, oil producing layer, oil storage layer, cover layer, structure and the like, and the lithology, physical property, oil content, gas content and aquatic characteristic of the underground rock stratum can be directly known through observation and research on the rock core. After the oil field is put into development, the deposition characteristics of the oil layer are further researched and known through the rock core, and the physical properties, pore structure, wettability, relative permeability and lithofacies characteristics of the oil layer are further researched, and the physical simulation and flooding rules of the oil layer are realized; the oil layer flooding characteristics of different development stages and different water-containing stages are recognized and mastered, the distribution of residual oil is cleared, and scientific basis is provided for the design of oil field development schemes, the adjustment of layers and well patterns and the encryption of wells.
The core taking is to take underground rock to the ground by using a special coring tool in the drilling process, and the agglomerated rock is called a core, so that various properties of the rock can be measured, the underground structure and the rock deposition environment can be intuitively studied, and the fluid properties and the like can be known. In mineral exploration and development, the stratum horizon and depth are needed to be designed according to geology, drilling work is carried out, a coring tool is put into the well, and a rock sample is taken out.
The underground temperature is high, the electrical equipment cannot be used, hydraulic equipment is often used, a liquid flow channel is required to be blocked before the hydraulic equipment is started, the axial constraint on a working part is required to be released after the hydraulic equipment is started, the working part is moved forwards, the liquid flow channel is smooth, hydraulic pressure is provided for the working part, a hydraulic motor is driven, a drill bit of a drilling machine is cooled, and after the working part moves forwards to a certain position, the pressure supply to the working part is required to be stopped, so that the working part stops working and pressure is relieved.
Disclosure of Invention
The invention aims to provide an automatic start-stop mechanism of a core drilling machine, which can automatically communicate a hydraulic channel, contact the constraint of a working part, cut off the hydraulic channel after the working part reaches a designated position, stop pressure supply, stop drilling and relieve pressure.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention discloses an automatic starting and stopping mechanism of a core drilling machine, which comprises a center rod, a liquid channel starting module, an outer cylinder unlocking module and a flow blocking module, wherein the center rod penetrates through inner cavities of the liquid channel starting module, the outer cylinder unlocking module and the flow blocking module, the liquid channel starting module is arranged behind the outer cylinder unlocking module and the outer cylinder, and the liquid channel starting module is connected with the outer cylinder unlocking module.
Further, the liquid channel starting module comprises a lock body, a locking rod and a starting shear pin, wherein the locking rod is arranged in the lock body, the locking rod is connected with the lock body through the starting shear pin, the center rod is arranged in the locking rod, the lock body comprises a sealing section A, the locking rod comprises a sealing section B, the sealing section A is in sealing fit with the sealing section B, the sealing section B is in sealing fit with the center rod, a liquid channel A is arranged between the center rod and the locking rod, the locking rod is provided with an outflow hole A, the outflow hole A is communicated with the liquid channel A, the outflow hole A is arranged behind the sealing section B, the lock body is communicated with the locking rod, the liquid channel B is arranged in front of the sealing section A, an outflow hole A outlet is arranged at the sealing section A, the front end of the liquid channel A is sealed, after the starting shear pin is sheared, the locking rod moves forward, the outflow hole A outlet is arranged in front of the sealing section A, and the liquid channel A is communicated with the liquid channel B through the outflow hole A.
Further, the outer cylinder unlocking module comprises a connecting pipe and a lock pin, the rear end of the connecting pipe is connected with the lock body, the rear end of the lock pin is connected with a locking rod, the central rod penetrates through an inner cavity of the lock pin, the lock pin is arranged in the connecting pipe, the outer diameter of the front section of the connecting pipe is smaller than the inner diameter of the outer cylinder, an unlocking hole is formed in the side wall of the front section of the connecting pipe, a groove A is formed in the outer wall of the lock pin, a groove B is formed in the inner wall of the outer cylinder, the length of the pin is larger than the depth of the unlocking hole, the outer end chamfering treatment of the pin and/or the side surface of the groove B are inclined planes, the width of the groove A is not smaller than the width of the inner end of the pin, the width of the groove B is not smaller than the width of the outer end of the pin, the connecting pipe is arranged in the outer cylinder before the shearing pin is started, the pin is in front of the groove A, the inner end face of the pin is in sliding fit with the outer wall of the lock pin, the pin is driven to move forward after the shearing pin is started, the unlocking hole is opposite to the groove A, the inner end of the pin is embedded in the groove A, the inner end of the pin is larger than the length of the pin.
Further, the choke module comprises a valve shell, a lock shell and a triggering mechanism, wherein the central rod penetrates through the inner cavity of the valve shell, the valve shell is arranged in the lock shell, the valve shell comprises a sealing section C and a diversion section from back to front, the lock shell comprises an inflow section B and an outflow section B from back to front, a liquid channel D is arranged between the central rod and the inflow section B, the rear end of the liquid channel D is communicated with the liquid channel B, the inner diameter of the inflow section B is larger than the outer diameter of the sealing section C, the outer diameter of the sealing section C is larger than the outer diameter of the diversion section, the inner diameter of the outflow section B is equal to the outer diameter of the sealing section C, the outflow section B is provided with an outflow hole B, the outflow hole B is communicated with a working part, the front end of the sealing section C is arranged in the inflow section B before drilling stop, the sealing section C is in sealing fit with the outflow section B after drilling stop, and the liquid channel D is separated from the outflow hole B.
Further, the valve shell also comprises a locking section A, the locking section A is connected with the front end of the diversion section, the lock shell also comprises a locking section B, the locking section B is connected with the front end of the outflow section B, the inner wall of the outer cylinder is connected with a safety gear, the triggering mechanism comprises a locking sleeve, a fixing ring, a safety gear, the locking section A and the locking section B, the lock shell penetrates through the inner cavity of the locking sleeve, the outer wall of the locking section A is provided with a locking groove A, the locking section B is provided with a locking hole, the locking hole is a through hole, a locking ball is arranged in the locking hole, the diameter of the locking ball is larger than the depth of the locking hole, the locking sleeve comprises an impact section and a locking section C from back to front, the inner wall of the locking section C is provided with a locking groove B, the distance from the bottom of the locking groove A to the inner wall of the locking section B is smaller than the diameter of the locking ball, the distance from the bottom of the locking groove A to the outer wall of the locking section B is not smaller than the diameter of the locking ball, the distance from the bottom of the locking groove B to the outer wall of the locking section B is smaller than the diameter of the locking ball, the distance from the bottom of the locking groove B to the inner wall of the locking section B is not smaller than the diameter of the locking ball, the fixing ring is fixed on the outer wall of the locking section B, the fixing ring is behind the locking hole, the inner diameter of the impact section is larger than the outer diameter of the fixing ring, the locking section C is in front of the fixing ring, the inner diameter of the outer cylinder is larger than the outer diameters of the lock shell and the locking sleeve, the safety gear comprises a clamping part and an extruding part from back to front, the inner diameter of the front end surface of the extruding part is smaller than the outer diameter of the impact section, the inner diameter of the extruding part is not smaller than the outer diameter of the fixing ring, the inner diameter of the front end surface of the clamping part is smaller than the outer diameter of the rear end surface of the fixing ring, the front end of the central rod is connected with a limiting head, the limiting head is arranged in the locking section B, the limiting head is in front of the locking section A, the gap between the outer wall of the limiting head and the inner wall of the lock shell is smaller than the thickness of the front end of the locking section A, the axial distance from the front end surface of the clamping part to the front end surface of the extrusion part is equal to the axial distance from the center of the locking hole to the center of the locking groove B before stopping drilling, the distance from the rear end of the sealing section C to the rear end of the outflow hole B before stopping drilling is larger than the axial distance from the center of the locking hole to the center of the locking groove A after stopping drilling, and the axial distance from the center of the locking hole to the center of the locking groove A after stopping drilling is larger than the distance from the front end of the sealing section C to the front end of the outflow hole B before stopping drilling.
Further, a liquid channel C is arranged between the center rod and the lock pin and between the center rod and the lock rod, an inflow hole is formed in the side wall of the lock rod, the liquid channel B and the liquid channel C are communicated through the inflow hole, the liquid channel C and the liquid channel D are communicated, the connecting pipe comprises a pressure release section and a flow blocking section from back to front, the lock pin is in sealing fit with the flow blocking section, the inner diameter of the flow blocking section is smaller than that of the pressure release section, the pressure release section is provided with a pressure release hole, the pressure release hole is a through hole, a shearing plunger is arranged in the liquid channel B, the inner diameter of the shearing plunger is larger than the outer diameter of the lock pin and the outer diameter of the lock rod, the shearing plunger is connected with the lock body through a shearing plunger through ending shear pin, the outer wall of the shearing plunger is in sealing fit with the inner wall of the lock body, the outer diameter of the backflushing section is equal to the inner diameter of the pressure release hole of the pressure release section, the backflushing section is in sealing fit with the pressure release hole of the front, after drilling is stopped, the front liquid returns to impact the front of the shearing plunger, the shearing plunger moves back, and the front of the backflushing section is in front of the pressure release hole, and the liquid channel B is communicated with the pressure release hole.
Further, the outer wall of the locking rod and the inner wall of the lock body are provided with limit steps which are matched with each other.
Further, the lock further comprises a lock nut, the lock nut is arranged at the rear of the lock body, the lock nut is communicated front and back, the center rod penetrates through the inner cavity of the lock nut, the front end of the lock nut is in threaded connection with the rear end of the lock body, and the starting shear pin penetrates through the threaded position of the rear end of the lock body.
Further, lock nut includes fixed section and screw thread section, and locking lever step rear external diameter is less than fixed section internal diameter, and fixed section internal diameter is less than locking lever step department external diameter, is connected with the lock body rear end in the screw thread section.
Further, locking nut axial is opened has locking hole A, locking hole A is the through-hole, and the lock body rear end face has locking hole B, and locking hole B is the blind hole, and locking hole A and locking hole B pair, still include set screw, set screw length is greater than locking hole A degree of depth, and set screw is in locking hole A, and set screw front end passes locking hole A embedding locking hole B.
The invention has the following beneficial effects:
1. before starting, a shear pin is started to fix a locking rod on a lock body, an outflow hole A is formed in a sealing section A, an opening of the outer wall of the outflow hole A is sealed, a liquid channel is blocked, a connecting pipe is connected with the lock body, the outer end of a pin is embedded into a groove B, an outer cylinder is locked on the connecting pipe, when the hydraulic pressure provided by a rear slurry pump reaches a starting value, the shear pin is started in a broken manner, the locking rod moves forward, liquid enters the liquid channel B through the outflow hole A and flows into a liquid channel C through the inflow hole, the liquid channel D is communicated with a front hydraulic motor through the outflow hole B, a hydraulic motor is started, the locking rod moves forward to drive a lock pin to move forward, the groove A is opposite to the unlocking hole, the gravity of the outer cylinder is forward, the outer end contact surface of the groove B and the pin is an inclined plane, the pin is extruded into the groove A, the restraint on the outer cylinder is relieved, the front end of the outer cylinder is connected with a hydraulic motor rotor, a drill bit and other working parts are moved forward;
2. before drilling stopping, the locking ball is arranged in the locking hole and the locking groove A to lock the valve shell, the liquid channel D is kept to be communicated with the front hydraulic motor through the outflow hole B, when the outer cylinder moves forwards to a stopping position, the outer cylinder drives the safety gear to impact the locking sleeve to enable the locking sleeve to move forwards, the locking groove B is opposite to the locking hole to release radial constraint of the locking ball, liquid impacts the rear end of the valve shell, the locking ball is extruded into the locking groove B, the valve shell moves forwards, the sealing section C cuts off the liquid channel D from the outflow hole B to stop supplying power to the front Fang Mada, the motor stops rotating, and as the liquid channel D is blocked, liquid flows backwards, flows back to the liquid channel B, the front end of the backflushing shearing plunger is subjected to backward force, the shearing plunger moves backwards, the front end of the backflushing section moves to the rear of the pressure relief hole, the liquid channel B is communicated with the outside through the pressure relief hole, and the liquid is discharged from the pressure relief hole;
3. the locking nut is arranged and is in threaded connection with the lock body, and the connecting section is in threaded connection with the outflow section A, so that the installation and the replacement of the starting shear pin are facilitated;
4. the locking hole A, the locking hole B and the fixing screw are matched to limit circumferential rotation.
Drawings
FIG. 1 is a schematic diagram of a liquid channel starting module before starting;
FIG. 2 is a schematic diagram of the liquid channel starting module after being started;
FIG. 3 is a schematic diagram of an outer barrel unlocking module before starting;
FIG. 4 is a schematic diagram of the outer barrel unlocking module after drilling stop;
FIG. 5 is a schematic diagram of a choke module before drilling stop;
FIG. 6 is a schematic diagram of the choke module after drilling stop;
in the figure: 11-lock body, 111-lock section, 112-seal section A, 113-fluid passage section, 12-lock rod, 121-connection section, 122-outflow section A, 1221-outflow hole A, 123-seal section B, 124-inflow section A, 1241-inflow hole, 13-start shear pin, 14-center rod, 15-lock nut, 151-fixing section, 152-thread section, 16-fixing screw, 21-connection tube, 211-connection section, 212-pressure release section, 2121-pressure release hole, 213-choke section, 22-lock pin, 221-groove A, 23-outer cylinder, 231-groove B, 232-safety gear 2321-clamping section, 2322-pressing section, 24-pin, 25-end shear pin, 26-shear plunger, 261-shear section, 262-recoil section, 31-valve housing, 311-sealing section C, 312-diversion section, 313-locking section A, 32-lock housing, 321-inflow section B, 322-outflow section B, 3221-outflow hole B, 323-locking section B, 33-lock sleeve, 331-impact section, 332-locking section C, 34-locking ball, 35-retaining ring, 36-retention head, 37-snap ring, 41-fluid channel A, 42-fluid channel B, 43-fluid channel C, 44-fluid channel D.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
The invention discloses an automatic starting and stopping mechanism of a core drilling machine, which comprises a center rod 14, a liquid channel starting module, an outer cylinder unlocking module and a flow blocking module, wherein the center rod penetrates through inner cavities of the liquid channel starting module, the outer cylinder unlocking module and the flow blocking module, the liquid channel starting module is arranged behind the outer cylinder unlocking module and the outer cylinder, and the liquid channel starting module is connected with the outer cylinder unlocking module;
as shown in fig. 1 and 2, the hydraulic channel starting module comprises a lock body 11, a locking rod 12, a starting shear pin 13 and a central rod 14, wherein the lock body 11 is penetrated from front to back, the lock body 11 is provided with a locking segment 111, a sealing segment A112 and a hydraulic channel segment 113 in sequence from back to front, the side wall of the locking segment 111 is provided with a starting shear pin hole, the starting shear pin hole is a through hole, the length of the starting shear pin 13 is larger than the depth of the starting shear pin hole, the locking rod 12 is penetrated from front to back, the locking rod 12 is arranged in the lock body 11, the locking rod 12 is provided with a connecting segment 121, an outflow segment A122, a sealing segment B123 and an inflow segment A124 in sequence from back to front, the connecting segment 121 is in threaded connection with the outflow segment A122, the sealing segment B123 is welded with the inflow segment A124, the outer wall of the connecting segment 121 is provided with a starting shear pin groove which is an annular groove, the starting shear pin 13 is arranged in the starting shear pin hole and the starting shear pin groove, the side wall is provided with an outflow hole A1221 on the side wall of the outflow segment A124 is provided with an inflow hole 1221, the outflow hole A1 is inclined from inside to outside to front, the plurality of outflow holes A1221 are arranged, the plurality of outflow holes A1221 are uniformly distributed along the circumference at the same axial position, the plurality of inflow holes 1241 are arranged at the front and back of different sides, the inner diameter of the locking section 111 is larger than that of the sealing section A112, the outer wall of the connecting section 121 is provided with a step, the outer diameter of the step is larger than that of the sealing section A112, the outer diameter of the front part of the step of the connecting section 121 is equal to that of the sealing section A112, the starting shear pin groove is arranged on the outer wall of the step, the center rod 14 is arranged in the locking rod 12, the sealing section A112 is in sealing fit with the sealing section B123, the inner diameters of the connecting section 121, the outflow section A122 and the inflow section A124 are larger than that of the center rod 14, the sealing section B123 is in sealing fit with the center rod 14, the axial distance from the front end of the sealing section A112 to the rear end of the lock body 11 is smaller than that from the front end of the sealing section B123 to the rear end of the lock body 11, the starting shear pin 13 is embedded into the starting shear pin groove through the starting shear pin hole, the axial distance from the opening of the outer wall of the outflow hole A1221 to the rear end of the lock body 11 is smaller than the axial distance from the rear end of the liquid channel section 113 to the rear end of the lock body 11, the device further comprises a lock nut 15, the lock nut 15 is behind the lock body 11, the lock nut 15 is penetrated front and back, the center rod 14 passes through the inner cavity of the lock nut 15, the front end of the lock nut 15 is in threaded connection with the rear end of the lock body 11, the starting shear pin hole is opened at the thread position of the rear end of the lock body 11, the radial distance from the inner wall of the lock nut 15 to the bottom of the starting shear pin is not smaller than the starting shear pin length, the lock nut 15 comprises a fixed section 151 and a threaded section 152, the outside diameter of the rear part of the step of the connecting section 121 is smaller than the outside diameter of the step position, the inside diameter of the threaded section 152 is equal to the outside diameter of the locking section 111, the lock nut 15 is axially opened with a locking hole A, the locking hole A is a through hole, the rear end face of the lock body 11 is provided with a locking hole B, the locking hole B is a blind hole, the locking hole A and the locking hole B are matched, the locking device further comprises a fixing screw 16, the length of the fixing screw 16 is larger than the depth of the locking hole A, the fixing screw 16 is arranged in the locking hole A, the front end of the fixing screw 16 penetrates through the locking hole A and is embedded into the locking hole B, after starting, the locking rod 12 moves forwards, the starting shear pin 13 shears off, the starting shear pin head is arranged in a starting shear pin hole, the starting shear pin tail is arranged in a starting shear pin groove, the starting shear pin head comprises a big end and a small end, the big end faces outwards, the outer diameter of the big end is larger than the outer diameter of the small end, the starting shear pin hole comprises an outer section and an inner section, the aperture of the outer section is not smaller than the outer diameter of the big end of the starting shear pin head, the aperture of the inner section is not smaller than the length of the big end, and the sum of the lengths of the small end and the starting shear pin tail is larger than the depth of the inner section;
as shown in fig. 3 and 4, the outer cylinder unlocking module comprises a connecting pipe 21 and a locking pin 22, the rear end of the connecting pipe 21 is in threaded connection with a lock body 11, the rear end of the locking pin 22 is in threaded connection with a locking rod 12, a central rod 14 passes through an inner cavity of the locking pin 22, the outer diameter of the central rod 14 is smaller than the inner diameter of the locking pin 22, the central rod 14, the connecting pipe 21, the outer cylinder 23 and the locking pin 22 are coaxial, the locking pin 22 is arranged in the connecting pipe 21, the outer diameter of the front section of the connecting pipe 21 is smaller than the inner diameter of the outer cylinder 23, unlocking holes are formed in the side wall of the front section of the connecting pipe 21, a plurality of unlocking holes are uniformly distributed along the circumference at the same axial position, the outer wall of the locking pin 22 is provided with a groove A221, the inner wall of the outer cylinder 23 is provided with a groove B231, the groove A221 and the groove B231 are respectively, the length of the pin 24 is larger than the depth of the unlocking hole, the pin 24 is in the unlocking hole, the outer end chamfer of the pin 24 is processed, the side face of the groove B231 is inclined, the outer end of the pin 24 is inclined, the inclined face, the included angle between the outer end chamfer of the outer end of the pin 24 and the side face of the groove B231 and the radial section is not smaller than the inner end width of the inner end of the pin 24, the width of the pin is not smaller than the inner end width of the pin 24, the inner end diameter of the inner end of the pin 24 and the inner end of the pin is not smaller than the inner diameter of the inner end section of the pin and the pin is not smaller than the nail length of the nail, and the inner diameter of the nail length of the nail section is not smaller than the nail diameter and the nail length and the nail end length of the nail.
The connecting pipe 21 comprises a connecting section 211, a pressure relief section 212 and a flow blocking section 213 from back to front, the outer diameter of the lock pin 22 is equal to the inner diameter of the flow blocking section 213, the inner diameter of the flow blocking section 213 is smaller than the inner diameter of the pressure relief section 212, the pressure relief section 212 is provided with a pressure relief hole 2121, the pressure relief hole 2121 is a through hole, the inner wall of the lock body 11 is radially provided with a finishing shear pin hole, the finishing shear pin 25 is arranged in the finishing shear pin hole, the length of the finishing shear pin 25 is larger than the depth of the finishing shear pin hole, the connecting pipe further comprises a shear plunger 26, the inner diameter of the shear plunger 26 is larger than the outer diameters of the lock pin 22 and the locking rod 12, the shear plunger 26 comprises a shear section 261 and a recoil section 262 from back to front, the outer wall of the shear section 261 is in sealing fit with the inner wall of the lock body 11, the inner wall of the lock body 11 is provided with a seal groove B, a seal ring is arranged in the seal groove B, the sealing groove B is in front of the end shear pin hole, the outer diameter of the backflushing section 262 is equal to the inner diameter of the front part of the pressure relief hole 2121 of the pressure relief section 212, the outer wall of the backflushing section 262 is provided with a sealing groove A, a sealing ring is arranged in the sealing groove A, the outer wall of the shearing section 261 is provided with an end shear pin groove, the outer wall of the connecting pipe 21 is provided with a guide groove, the guide groove is axially arranged in front of the pressure relief hole 2121, the guide groove is communicated with the pressure relief hole 2121, the front end of the backflushing section 262 is in front of the front end of the pressure relief hole 2121, the backflushing section 262 is in sealing fit with the front part of the pressure relief hole 2121 of the pressure relief section 212, the inner end of the end shear pin 25 is embedded into the end shear pin groove, and after the drilling is stopped, the front end of the backflushing section 262 is behind the front end of the pressure relief hole 2121, and the end shear pin 25 is sheared.
As shown in fig. 5 and 6, the choke module comprises a valve shell 31, a lock shell 32, a locking sleeve 33 and a fixing ring 35, wherein the central rod 14, the valve shell 31, the lock shell 32, the locking sleeve 33, the fixing ring 35 and the outer cylinder 23 are coaxial, the central rod 14 penetrates through the inner cavity of the valve shell 31, the valve shell 31 is arranged in the lock shell 32, the lock shell 32 penetrates through the inner cavity of the locking sleeve 33, the valve shell 31 comprises a sealing section C311, a diversion section 312 and a locking section A313 from back to front, the outer wall of the locking section A313 is provided with a locking groove A, the lock shell 32 comprises an inflow section B321, an outflow section B322 and a locking section B323 from back to front, the inner diameter of the inflow section B322 is larger than the outer diameter of the sealing section C311, the outer diameter of the sealing section C311 is larger than the outer diameter of the diversion section 312, the inner diameter of the outflow section B322 is equal to the outer diameter of the sealing section C311, the outflow section B322 is provided with an outflow hole B3221, the locking section B323 is provided with a locking hole, the outflow hole 3221 and the locking hole B3221 are through holes, the locking hole is internally provided with a locking ball 34, the diameter of the locking ball 34 is larger than the depth of the locking hole, the locking sleeve 33 comprises an impact section 331 and a locking section C332 from back to front, the inner wall of the locking section C332 is provided with a locking groove B, the distance from the bottom of the locking groove A to the inner wall of the locking section B323 is smaller than the diameter of the locking ball 34, the distance from the bottom of the locking groove A to the outer wall of the locking section B323 is not smaller than the diameter of the locking ball 34, the distance from the bottom of the locking groove B to the inner wall of the locking section B323 is not smaller than the diameter of the locking ball 34, the fixed ring is fixed on the outer wall of the locking section B, the fixed ring 35 is behind the locking hole, the inner diameter of the impact section 331 is larger than the outer diameter of the fixed ring 35, the locking section C332 is in front of the fixed ring 35, the inner diameter of the outer cylinder 23 is larger than the outer diameters of the lock shell 32 and the locking sleeve 33, the inner wall of the outer cylinder 23 is connected with a safety gear 232, the safety gear 232 comprises a clamping part 2321 and an extruding part 2322 from back to front, the inner diameter of the front end surface of the extruding part 2322 is smaller than the outer diameter of the impact section 331, the inner diameter of the extruding part 2322 is not smaller than the outer diameter of the fixed ring 35, the inner diameter of the front end surface of the clamping part 2321 is smaller than the outer diameter of the rear end surface of the fixed ring 35, the front end of the central rod 14 is connected with a limiting head 36, the limiting head 36 is arranged in a locking section B323, the limiting head is arranged in front of a 36 locking section A313, the gap between the outer wall of the limiting head 36 and the inner wall of the lock shell 32 is smaller than the thickness of the front end of the locking section A313, the axial distance from the front end surface of the clamping part 2321 to the front end surface of the extruding part 2322 is equal to the axial distance from the center of the locking hole before drilling to the center of the locking groove B, the axial distance from the rear end of the sealing section C311 before drilling to the rear end of the outflow hole B3221 after drilling is greater than the axial distance from the center of the locking hole to the center of the locking groove A, the axial distance from the center of the locking hole to the center of the locking groove A after drilling stopping is larger than the distance from the front end of the sealing section C311 to the front end of the outflow hole B3221 before drilling stopping, the lock shell 32 and the valve shell 31 are locked or released through the locking ball 34, the lock shell 32 and the locking sleeve 33 are locked or released through the locking ball 34, the locking device further comprises a clamping ring 37, the outer diameter of the clamping ring 37 is larger than the inner diameter of the fixing ring 35, the inner diameter of the clamping ring 37 is smaller than the inner diameter of the fixing ring 35, the clamping ring 37 is embedded into a clamping groove on the outer wall of the locking section B323, the fixing ring 35 is clamped between the rear end of the clamping ring 37 and the front end of the outflow section B322, the front end of the locking section C332 is supported by a spring, the lock shell 32 and the valve shell 31 are locked, a liquid channel is kept clear, the outer cylinder 23 is internally provided with the safety gear 232, and when the outer cylinder 23 moves forwards to a limiting position, the outer cylinder 23 drives the safety gear 232 to strike the locking sleeve 33, the locking ball 34 moves outwards, the limiting the valve shell 31, the valve shell 31 moves forwards, the liquid channel is closed, and the drilling stopping is performed.
The inner wall of the connecting section 121, the inner wall of the outflow section A122, the rear end surface of the sealing section B123 and the outer wall of the central rod 14 enclose a liquid channel A41, the inner wall of the lock body 11 and the outer wall of the locking rod 12 enclose a liquid channel B42, the inner wall of the locking rod 12 and the outer wall of the central rod 14 enclose a liquid channel C43, the inner wall of the lock pin 22 and the outer wall of the central rod 14 enclose a liquid channel D44, the liquid channel B42 is communicated with the liquid channel C43 through an inflow hole 1241, the liquid channel C43 is communicated with the liquid channel D44, the rear part of the liquid channel A41 is communicated with liquid supply equipment, and the front part of the outflow hole B3221 is communicated with working equipment.
Before starting, the starting shear pin 13 passes through the starting shear pin hole and is embedded into the starting shear pin groove, the locking rod 12 is fixed in the lock body 11 through the starting shear pin 13, the axial distance from the opening of the outer wall of the outflow hole A1221 to the rear end of the lock body 11 is smaller than the axial distance from the rear end of the liquid channel section 113 to the rear end of the lock body 11, the opening of the outer wall of the outflow hole A1221 is sealed by the sealing section A112, liquid cannot flow forwards, the front end of the connecting pipe 21 is arranged in the outer cylinder 23, the pin 24 is arranged in front of the groove A221, the inner end surface of the pin 24 is in sliding fit with the outer wall of the locking pin 22, the outer end of the pin 24 is embedded into the groove B231, the outer cylinder 23 is fixed outside the connecting pipe 21 through the pin 24, after the hydraulic pressure provided by the rear slurry pump reaches a starting value, the rear end of the locking rod 12 is impacted, the starting shear pin 13 is cut off, the starting shear pin 13 is broken into a starting shear pin head and a starting shear pin tail, the starting shear pin head is in the starting shear pin hole is arranged in the starting shear pin hole, the starting shear pin tail is in the starting shear pin groove, the starting shear pin is in the starting shear pin head is in the starting shear pin and the starting shear pin is in the starting shear pin hole, the front of the starting shear pin is in the front of the starting shear pin, the axial distance from the opening of the outer wall of the outflow hole A1221 to the rear end of the lock body 11 is larger than the axial distance from the rear end of the liquid passage section 113 to the rear end of the lock body 11, the liquid passage A41 is communicated with the liquid passage B42 through the outflow hole A1221, the liquid passage A41, the liquid passage B42, the liquid passage C43 and the liquid passage D44 are communicated, the liquid passage D44 is communicated with the hydraulic motor through the outflow hole B3221, the hydraulic energy provided by the liquid supply equipment behind the liquid passage A41 is transmitted to the front hydraulic motor and the drill bit through the liquid passage A41, the liquid passage B42, the liquid passage C43 and the liquid passage D44, the motor is driven, the drill bit is cooled, the locking rod 12 drives the locking pin 22 to move forwards, the inner end of the pin 24 is in sliding fit with the outer wall of the locking pin 22, when the groove A221 slides forwards to the same axial position as the pin 24, the outer cylinder 23 generates forward pressure by self gravity, the groove B231 is inclined with the contact surface of the pin 22, the groove B231 extrudes the pin 24 from the groove B231, the pin 24 is extruded from the groove B231 to be pressed into the groove A221, the restraint on the outer cylinder 23 is released, and the outer cylinder 23 drives the working parts connected in front to move forwards.
When the drilling machine works, the outer cylinder 23 moves from back to front, liquid flows into the liquid channel D44 through the liquid channel A41, the liquid channel B42 and the liquid channel C43, the liquid channel D44 is communicated with the front hydraulic motor through the outflow hole B3221, the locking ball 34 is in the locking groove A and the locking hole, the valve shell 31 is limited to move forwards, the outer cylinder 23 drives the safety gear 232 to move forwards, after the outer cylinder 23 moves to a limited position, the safety gear 232 impacts the locking sleeve 33, the locking groove B is opposite to the locking hole, liquid in the liquid channel D44 impacts the rear end of the valve shell 31, the locking ball 34 is extruded into the locking groove B, the valve shell 31 is released from constraint and moves forwards, the sealing section C311 moves into the outflow section B322, a passage between the liquid channel D44 and the outflow hole B3221 is blocked, the motor stops rotating, the liquid backflushing flows back into the liquid channel B42, the backflushing section 262 moves backwards, the backflushing end shear pin 25 is connected with the liquid channel B42 and the pressure relief hole 2121.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. An automatic start-stop mechanism of a core drilling machine, which is characterized in that: the hydraulic control device comprises a central rod (14), a hydraulic channel starting module, an outer cylinder (23), an outer cylinder unlocking module and a flow blocking module, wherein the central rod (14) penetrates through inner cavities of the hydraulic channel starting module, the outer cylinder unlocking module and the flow blocking module, the hydraulic channel starting module is arranged behind the outer cylinder unlocking module and the outer cylinder (23), and the hydraulic channel starting module is connected with the outer cylinder unlocking module;
the flow blocking module comprises a valve shell (31), a lock shell (32) and a triggering mechanism, wherein a central rod (14) penetrates through an inner cavity of the valve shell (31), the valve shell (31) comprises a sealing section C (311) and a flow guiding section (312) from back to front, the valve shell (31) comprises an inflow section B (321) and an outflow section B (322) from back to front, a liquid channel D (44) is arranged between the central rod (14) and the inflow section B (321), the rear end of the liquid channel D (44) is communicated with a liquid channel B (42), the inner diameter of the inflow section B (321) is larger than the outer diameter of the sealing section C (311), the outer diameter of the sealing section C (311) is larger than the outer diameter of the flow guiding section (312), the inner diameter of the outflow section B (322) is equal to the outer diameter of the sealing section C (311), the outflow section B (322) is provided with an outflow hole B (3221), the outflow hole B (3221) is communicated with a working part, the front end of the sealing section C (311) is communicated with the inflow section B (321), the liquid channel D (44) is communicated with the outflow hole (3221), and the outflow hole (322) is blocked;
the lock comprises a lock body (11), and is characterized by further comprising a lock nut (15), wherein the lock nut (15) is arranged behind the lock body (11), the lock nut (15) is communicated back and forth, a center rod (14) penetrates through an inner cavity of the lock nut (15), the front end of the lock nut (15) is in threaded connection with the rear end of the lock body (11), and a shear pin (13) is started to penetrate through the threaded position of the rear end of the lock body (11).
2. The automatic start-stop mechanism of a core drilling machine according to claim 1, wherein: the liquid channel starting module comprises a lock body (11), a locking rod (12) and a starting shear pin (13), wherein the locking rod (12) is arranged in the lock body (11), the locking rod (12) is connected with the lock body (11) through the starting shear pin (13), the central rod (14) is arranged in the locking rod (12), the lock body (11) comprises a sealing section A (112), the locking rod (12) comprises a sealing section B (123), the sealing section A (112) is in sealing fit with the sealing section B (123), the sealing section B (123) is in sealing fit with the central rod (14), a liquid channel A (41) is arranged between the central rod (14) and the locking rod (12), an outflow hole A (1221) is formed in the locking rod (12), the outflow hole A (1221) is communicated with the liquid channel A (41), the outflow hole A (1221) is arranged behind the sealing section B (123), a liquid channel B (42) is arranged between the lock body (11) and the locking rod (12), the liquid channel B (42) is arranged in front of the sealing section A (112), the sealing section A (14) is in sealing fit with the central rod (14), the front of the sealing section A (14) and the front of the sealing section A (13) is arranged at the front of the sealing section A (13, the front of the sealing outlet (1) and the front shear pin (13) is arranged at the front of the sealing outlet (1) and the front end (13) and the front of the sealing outlet (1) is arranged at the front of the sealing outlet (1), the liquid passage a (41) and the liquid passage B (42) communicate through the outflow hole a (1221).
3. The automatic start-stop mechanism of a core drilling machine according to claim 2, wherein: the outer cylinder unlocking module comprises a connecting pipe (21) and a lock pin (22), wherein the rear end of the connecting pipe (21) is connected with a lock body (11), the rear end of the lock pin (22) is connected with a locking rod (12), a center rod (14) passes through an inner cavity of the lock pin (22), the lock pin (22) is arranged in the connecting pipe (21), the outer diameter of the front section of the connecting pipe (21) is smaller than the inner diameter of an outer cylinder (23), an unlocking hole is formed in the side wall of the front section of the connecting pipe (21), a groove A (221) is formed in the outer wall of the lock pin (22), a groove B (231) is formed in the inner wall of the outer cylinder (23), the outer cylinder also comprises a pin (24), the length of the pin (24) is larger than the depth of the unlocking hole, and the pin (24) is arranged in the unlocking hole, the outer end chamfering treatment of the pin (24) and/or the side surface of the groove B (231) is an inclined plane, the width of the groove A (221) is not smaller than the inner end width of the pin (24), the width of the groove B (231) is not smaller than the outer end width of the pin (24), before the shearing pin (13) is started to shear, the front end of the connecting pipe (21) is arranged in the outer cylinder (23), the pin (24) is arranged in front of the groove A (221), the inner end surface of the pin (24) is in sliding fit with the outer wall of the lock pin (22), the outer end of the pin (24) is embedded into the groove B (231), after the shearing pin (13) is started to shear, the lock rod (12) drives the lock pin (22) to move forwards, the unlocking hole is opposite to the groove A (221), the inner end of the pin (24) is embedded into the groove A (221), and the distance from the inner end surface of the pin (24) to the inner wall of the outer cylinder (23) is larger than the length of the pin (24).
4. The automatic start-stop mechanism of a core drilling machine according to claim 1, wherein: the valve shell (31) further comprises a locking section A (313), the locking section A (313) is connected with the front end of the diversion section (312), the lock shell (32) further comprises a locking section B (323), the locking section B (323) is connected with the front end of the outflow section B (322), the inner wall of the outer cylinder (23) is connected with a safety gear (232), the triggering mechanism comprises a locking sleeve (33), a fixed ring (35), a safety gear (232), the locking section A (313) and the locking section B (323), the lock shell (32) penetrates through the inner cavity of the locking sleeve (33), the outer wall of the locking section A (313) is provided with a locking groove A, the locking section B (323) is provided with a locking hole, a locking ball (34) is arranged in the locking hole, the diameter of the locking ball (34) is larger than the depth of the locking hole, the locking sleeve (33) comprises an impact section (331) and a locking section C (332) from back to front, the inner wall of the locking section C (332) is provided with a locking groove B, the fixed ring (35) is fixed on the outer wall of the locking section B (323), the fixed ring (35) is arranged behind the locking hole,punching machineThe inner diameter of the striking section (331) is larger than the outer diameter of the fixed ring (35), the locking section C (332) is arranged in front of the fixed ring (35), the safety gear (232) comprises a clamping part (2321) and an extruding part (2322) from back to front, and the inner diameter of the front end surface of the extruding part (2322) is smaller than the impact section (331)The outer diameter of the extruding part (2322) is not smaller than the outer diameter of the fixed ring (35), the inner diameter of the front end surface of the clamping part (2321) is smaller than the outer diameter of the rear end surface of the fixed ring (35), the front end of the central rod (14) is connected with a limiting head (36), the limiting head (36) is arranged in the locking section B (323), the limiting head (36) is arranged in front of the locking section A (313), the axial distance from the front end surface of the clamping part (2321) to the front end surface of the extruding part (2322) is equal to the axial distance from the locking hole center before drilling stopping to the center of the locking groove B, the distance from the rear end of the sealing section C (311) before drilling stopping to the rear end of the outflow hole B (3221) is larger than the axial distance from the locking hole center after drilling stopping to the center of the locking groove A, and the axial distance from the locking hole center to the front end of the sealing section C (311) before drilling stopping to the front end of the outflow hole B (3221).
5. The automatic start-stop mechanism of a core drilling machine according to claim 4, wherein: a liquid channel C (43) is arranged between the center rod (14) and the lock pin (22) and the lock rod (12), an inflow hole (1241) is formed in the side wall of the lock rod (12), the liquid channel B (42) is communicated with the liquid channel C (43) through the inflow hole (1241), the liquid channel C (43) is communicated with the liquid channel D (44), the connecting pipe (21) comprises a pressure release section (212) and a flow blocking section (213) from back to front, the lock pin (22) is in sealing fit with the flow blocking section (213), the inner diameter of the flow blocking section (213) is smaller than the inner diameter of the pressure release section (212), the pressure release section (212) is provided with a pressure release hole (2121), the pressure release hole (2121) is a through hole, the liquid channel B (42) is internally provided with a shearing plunger (26), the inner diameter of the shearing plunger (26) is larger than the outer diameters of the lock pin (22) and the locking rod (12), the shearing plunger (26) is connected with the lock body (11) through a finishing shearing pin (25), the shearing plunger (26) comprises a shearing section (261) and a backflushing section (262) from back to front, the outer wall of the shearing section (261) is in sealing fit with the inner wall of the lock body (11), the outer diameter of the backflushing section (262) is equal to the inner diameter of the front part of a pressure relief hole (2121) of the pressure relief section (212), the front end of the backflushing section (262) is in front of the front end of the pressure relief hole (2121) before drilling is stopped, the back flushing section (262) is in sealing fit with the front part of the pressure relief hole (2121) of the pressure relief section (212), after drilling is stopped, front liquid flows back to impact the front end of the shearing plunger (26), the shearing plunger (26) moves backwards, the front end of the back flushing section (262) is behind the front end of the pressure relief hole (2121), and the liquid channel B (42) is communicated with the pressure relief hole (2121).
6. The automatic start-stop mechanism of a core drilling machine according to claim 2, wherein: the outer wall of the locking rod (12) and the inner wall of the lock body (11) are provided with limit steps which are matched with each other.
7. The automatic start-stop mechanism of a core drilling machine according to claim 1, wherein: the lock nut (15) comprises a fixed section (151) and a threaded section (152), the outer diameter of the back of the step of the locking rod (12) is smaller than the inner diameter of the fixed section (151), the inner diameter of the fixed section (151) is smaller than the outer diameter of the step of the locking rod (12), and the threaded section (152) is internally connected with the rear end of the lock body (11).
8. The automatic start-stop mechanism of a core drilling machine according to claim 1, wherein: the locking nut (15) is axially provided with a locking hole A, the locking hole A is a through hole, the rear end face of the lock body (11) is provided with a locking hole B, the locking hole B is a blind hole, the locking hole A and the locking hole B are matched, the locking nut further comprises a fixing screw (16), the length of the fixing screw (16) is greater than the depth of the locking hole A, the fixing screw (16) is arranged in the locking hole A, and the front end of the fixing screw (16) penetrates through the locking hole A to be embedded into the locking hole B.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821300103 | 2018-08-13 | ||
| CN201821300103X | 2018-08-13 |
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| CN201910186237.6A Active CN109779552B (en) | 2018-08-13 | 2019-03-12 | Automatic start-stop mechanism of core drilling machine |
| CN201920310321.XU Active CN209586313U (en) | 2018-08-13 | 2019-03-12 | A kind of core drilling rig automatic start-stop mechanism |
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| CN109779552B (en) * | 2018-08-13 | 2023-05-12 | 四川大学 | Automatic start-stop mechanism of core drilling machine |
| CN111173467B (en) * | 2020-03-03 | 2024-04-12 | 湖南科技大学 | Rope coring drilling tool suitable for heavy-calibre geological drilling |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002213A (en) * | 1974-03-01 | 1977-01-11 | Tigre Tierra, Inc. | Down-the-hole motor for rotary drill rod and process for drilling using the same |
| US4603749A (en) * | 1984-08-27 | 1986-08-05 | Norton Christensen, Inc. | Apparatus for downward displacement of an inner tube within a coring barrel |
| US4800969A (en) * | 1987-11-24 | 1989-01-31 | Longyear Company | Fast descent core barrel apparatus |
| CN201095966Y (en) * | 2007-10-19 | 2008-08-06 | 新疆石油管理局钻井工艺研究院 | Coal gas rope coring tool |
| JP5390206B2 (en) * | 2009-01-28 | 2014-01-15 | 株式会社明間ボーリング | Core sampling device used in the wire line system composed of inner barrel |
| CN201818263U (en) * | 2010-10-19 | 2011-05-04 | 中国石油化工集团公司 | Horizontal well coring tool |
| CN102900390B (en) * | 2012-11-09 | 2015-09-23 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
| CN205677569U (en) * | 2016-06-25 | 2016-11-09 | 四川川庆石油钻采科技有限公司 | A kind of hermetic core taking tool pressure equaliser |
| CN105927175B (en) * | 2016-06-30 | 2018-05-25 | 中国石油集团西部钻探工程有限公司 | Lock claw suspension type pressurization coring apparatus |
| CN107165597B (en) * | 2017-07-10 | 2019-04-02 | 西南石油大学 | A kind of wire line coring tool and method |
| CN107514240B (en) * | 2017-10-13 | 2023-10-17 | 四川大学 | Automatic high stability pressurize coring device of control |
| CN108301802B (en) * | 2018-04-20 | 2024-01-19 | 河北省地矿局第七地质大队(河北省地质矿产勘查开发局雄安地质调查监测中心) | Rope core drill assembly |
| CN109779552B (en) * | 2018-08-13 | 2023-05-12 | 四川大学 | Automatic start-stop mechanism of core drilling machine |
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