CN117248825B - Dual shunt of top drive drilling machine - Google Patents
Dual shunt of top drive drilling machine Download PDFInfo
- Publication number
- CN117248825B CN117248825B CN202311392178.0A CN202311392178A CN117248825B CN 117248825 B CN117248825 B CN 117248825B CN 202311392178 A CN202311392178 A CN 202311392178A CN 117248825 B CN117248825 B CN 117248825B
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- Prior art keywords
- main shaft
- outer sleeve
- liquid guide
- counter bore
- joint
- Prior art date
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- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 230000009977 dual effect Effects 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 210000004907 gland Anatomy 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 238000012856 packing Methods 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- 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
-
- 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
- E21B17/18—Pipes provided with plural fluid passages
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of drilling equipment, provides a double flow divider of a top drive drilling machine, and solves the technical problem that the maintenance and cleaning frequency of the existing flow divider is high due to blockage. The separator comprises a main shaft, an outer sleeve and a split joint, wherein the main shaft is provided with a liquid guide blind hole, a liquid guide perforation and an air guide perforation, and a first counter bore and a second counter bore are formed at the end part of the liquid guide blind hole; the outer sleeve and the external sleeve are sleeved outside the main shaft; the outer side of the outer connecting sleeve is connected with an air inlet joint, and the inner side of the outer connecting sleeve is provided with an air guide groove; the split joint comprises a straight barrel part and a conical part, the end part of the straight barrel part of the split joint is inserted into the second counter bore, the conical part is integrally arranged in the first counter bore, the tail end of the conical part of the split joint is propped against the check ring, the air inlet joint, the air guide groove, the air guide perforation, the annular gap between the split joint and the first counter bore are sequentially communicated, a notch plane is formed on the side wall of the conical part, and a through hole is formed between the tail part of the conical part and the check ring through the notch plane.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a double flow divider of a top drive drilling machine.
Background
Along with the continuous improvement of requirements of modern construction on construction precision, construction efficiency, engineering quality and the like, the top drive drilling machine is increasingly applied, the top drive drilling machine is required to adapt to the requirements of high-pressure rotary spraying construction technology, and the top drive drilling machine cannot be used as a through hole power head and can be used for trial high-pressure rotary spraying technology only by a front high-pressure shunt.
The high-pressure rotary spraying process is to drill holes by a drilling machine, spray slurry from a high-pressure nozzle at high speed by a high-pressure generating device to form a stream of highly concentrated energy liquid flow, and directly destroy soil. Because it is generally difficult for a rotary jet drill to directly penetrate stratum containing pebble layer, rock layer or sand layer, when rotary jet construction is carried out in the stratum, hole guiding construction is generally needed first, PVC pipe is arranged in a drilled hole for wall protection, and then rotary jet construction is carried out, while a conventional rotary jet drill generally adopts a diverter to convey different media (water, gas and slurry) into each passage of a drill rod.
The prior patent CN 2020204877795 of the applicant, the spindle assembly disclosed in this patent scheme is a diverter, the outer sleeve is sleeved outside the main shaft, the outer sleeve is connected with an air inlet, and the air inlet is sequentially communicated with a second input channel inside the main shaft, the diversion hole and a first channel between the inner tube and the outer tube of the drilling tool to form an air inlet channel. The top end of the first upper inner joint extends into the blind hole of the main shaft, a sealing element is arranged between the matching surfaces of the first upper inner joint and the blind hole of the main shaft, the first upper inner joint is fixed with the inner pipe of the drilling tool, even if the sealing element is not worn or damaged, under the rotating working state, high-pressure liquid (slurry) flowing to the inner pipe of the drilling tool can permeate into the diversion hole through the joint gap between the first upper inner joint and the blind hole of the main shaft, and after the operation is stopped, the blade is dried in the diversion hole and blocks the diversion hole, not to mention the condition that the sealing element is partially worn or damaged. Therefore, the shunt has high maintenance and cleaning frequency.
To this end we propose a dual diverter for a top drive drilling rig.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the double diverter of the top drive drilling machine, which overcomes the defects of the prior art, has reasonable design and compact structure, and solves the technical problem of high maintenance and cleaning frequency caused by blockage of the existing diverter.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the utility model provides a dual shunt of top drive rig, includes main shaft, outer sleeve and reposition of redundant personnel joint, its characterized in that:
the main shaft is provided with a liquid guide blind hole extending along the axial direction and a liquid guide perforation extending along the radial direction and communicated with the liquid guide blind hole, the liquid guide blind hole is internally provided with a first counter bore and a second counter bore which are coaxially arranged from the opening end in sequence, and the main shaft is provided with an air guide perforation extending along the radial direction and communicated with the first counter bore;
the outer sleeve is sleeved outside the main shaft, two ends of the outer sleeve are in sealing fit with the main shaft, the outer side of the outer sleeve is provided with a liquid inlet joint, and the inner side of the outer sleeve is provided with a liquid guide groove which is arranged around the main shaft and communicated with the liquid inlet joint and the liquid guide blind hole;
the right side of the outer sleeve is coaxially connected with an external sleeve, two ends of the external sleeve are in sealing fit with the main shaft, the outer side of the external sleeve is connected with an air inlet joint, and the inner side of the external sleeve is provided with an air guide groove which is arranged around the main shaft and is communicated with the air inlet joint and the air guide perforation;
the split joint comprises a straight barrel part and a conical part, wherein the end part of the straight barrel part of the split joint is inserted into the second counter bore, the rest part of the straight barrel part and the conical part are integrally arranged in the first counter bore, the conical part is opposite to the air guide perforation, an inner channel of the split joint is communicated with the liquid guide blind hole and the first counter bore, the tail end of the conical part of the split joint abuts against a check ring embedded in the inner side wall of the first counter bore, a notch plane is formed on the side wall of the conical part, and extends to the tail end of the conical part, so that a through hole is formed between the tail part of the conical part and the check ring, and the through hole is communicated with an inner cavity on two sides of the check ring.
Further, the two ends of the outer sleeve are in sealing fit with the main shaft through a packing structure, the packing structure comprises packing, a gland and a compression ring, the packing fills a gap between the outer sleeve and the main shaft, the outer end part of the packing is abutted by the press-fitting part of the compression ring, the inner end part of the packing is abutted on the limit flange on the inner side of the outer sleeve, the gland is fixedly connected with the outer sleeve through a circle of bolts, and the compression ring is sleeved between the main shaft and the gland and is in positioning fit with the gland.
Furthermore, the outer side wall of the main shaft is provided with a convex spigot, the inner side wall of the compression ring is provided with a concave spigot, and the filler structures on the left side and the right side limit the axial position of the outer sleeve through concave-convex stop fit.
Further, the liquid guide perforation is provided with a pair of liquid guide perforation, the axes of the pair of liquid guide perforation are positioned in the same axial plane and are arranged in a staggered mode along the axial direction, and the partial staggered mode is that the distance between the axes is smaller than the radius of the liquid guide perforation.
Further, the compression ring is formed by assembling two half compression ring bodies which are arranged in a semicircular mode.
Furthermore, the outer side wall of the pressing ring half body is embedded with a flat key, and the flat key is embedded into a positioning groove of the inner side wall of the pressing cover.
Further, a gland on the left side of the outer sleeve is coaxially connected with a left end cover, and the left end cover is in sealing fit with the main shaft.
Further, the gland is connected with a nozzle and is provided with an oil injection oil way, the inner side wall of the compression ring is provided with a lubrication oil way, and the nozzle, the oil injection oil way and the lubrication oil way are sequentially communicated.
(III) beneficial effects
The invention provides a double diverter of a top drive drilling machine, which has the following beneficial effects:
1. the invention abandons the upper outer joint and the shunt hole of the original structure, and adopts the annular gap between the shunt joint and the first counter bore of the main shaft to replace the original shunt hole, on one hand, the annular gap is increased in cross section area compared with the shunt hole and is not easy to block, and on the other hand, compared with the first counter bore with larger cross section and a plurality of shunt holes with smaller cross sections, the processing is easier.
2. The annular gap between the shunt joint and the first counter bore of the main shaft and the annular gap between the inner pipe of the drilling tool and the first counter bore are communicated with the through hole formed at the tail part of the shunt joint through the check ring, the through hole changes along with the rotation of the shunt joint in the working process of the drilling machine, and if the through hole is blocked, the through hole is blocked by the rotating shunt joint, namely the through hole is not easy to block.
3. The tail end of the conical part of the split joint is abutted against the retainer ring, if a notch plane is not arranged, the annular gap between the split joint and the first counter bore of the main shaft and the annular gap between the inner pipe of the drilling tool and the first counter bore are not communicated, after the notch plane is arranged, a through hole is formed between the tail part of the conical part in the extending direction of the notch plane and the retainer ring, and the two gaps are communicated, namely, the through hole is positioned in the extending direction of the notch plane, and the notch plane has a guiding effect on air flow; in addition, the side wall between the adjacent notch planes of the conical part is an arc surface (the reserved part of the conical surface), and when the split joint rotates to the position that the side wall which is the arc surface is aligned with the air guide perforation, more air flows are guided to the notch planes at the two sides under the action of the arc surface, so that the air pressure loss can be effectively reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is an exploded view of the first seal ring, outer sleeve, air inlet fitting, diverter fitting and retainer ring of FIG. 2 in combination;
FIG. 4 is a schematic view of the structure of the press ring and flat key of the present invention;
FIG. 5 is a schematic cross-sectional view of the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5 with a partial enlargement at A;
FIG. 7 is a schematic view of the structure of FIG. 5 at B with a partial enlargement;
fig. 8 is a right-side view of the present invention.
In the figure:
1. a main shaft;
1a, a liquid guide blind hole;
1b, liquid guiding perforation;
1c, a first counter bore;
1d, a second counter bore;
1e, through holes;
1f, air guide perforation;
2. an outer sleeve;
2a, a liquid guide groove;
3. a left gland;
4. a compression ring;
4a, a compression ring half body;
5. a filler;
6. a left end cover;
7. a first seal ring;
8. a right gland;
9. an outer sleeve;
9a, an air guide groove;
10. a liquid inlet joint;
11. a limiting frame;
12. an air inlet joint;
13. a shunt joint;
13a, a straight tube part;
13b, a conical portion;
13b-1, notch plane;
14. a retainer ring;
15. a long bolt;
16. a nut;
17. and (5) flat keys.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, a double diverter of a top drive drilling machine comprises a main shaft 1, an outer sleeve 2, an external sleeve 9 and a diverter joint 13;
the main shaft 1 is provided with a liquid guide blind hole 1a extending along the axial direction, the liquid guide blind hole 1a is formed by drilling from right to left, the liquid guide blind hole 1a is internally provided with a first counter bore 1c and a second counter bore 1d which are coaxially arranged from the opening end in sequence, and the main bodies of the first counter bore 1c, the second counter bore 1d and the liquid guide blind hole 1a are arranged in a step shape; the main shaft 1 is provided with a liquid guide perforation 1b which extends along the radial direction and is communicated with the main body of the liquid guide blind hole 1a, and an air guide perforation 1f which is communicated with the first counter bore 1 c;
the outer sleeve 2 is sleeved outside the main shaft 1, two ends of the outer sleeve are in sealing fit with the main shaft 1, the outer side of the outer sleeve 2 is provided with a liquid inlet joint 10, the inner side of the outer sleeve is provided with a liquid guide groove 2a which is arranged around the main shaft 1 and is communicated with the liquid inlet joint 10 and the liquid guide blind hole 1a, in the figure, the upper part of the liquid inlet joint 10 is pressed by a limiting frame 11, and two ends of the limiting frame 11 are fixedly connected with a left gland and a right gland;
the outer sleeve 9 is coaxially connected to the right side of the outer sleeve 2 and is also sleeved outside the main shaft 1, two ends of the outer sleeve 9 are in sealing fit with the main shaft 1, the outer side of the outer sleeve 9 is connected with an air inlet joint 12, and the inner side of the outer sleeve 9 is provided with an air guide groove 9a which is arranged around the main shaft 1 and is communicated with the air inlet joint 12 and the air guide perforation 1f;
the split joint 13 comprises a straight barrel portion 13a and a conical portion 13b, the end portion of the straight barrel portion 13a of the split joint 13 is inserted into the second counterbore 1d and is in sealing fit with the second counterbore 1d through a plurality of sealing rings, the rest portion of the straight barrel portion 13a and the conical portion 13b are integrally arranged in the first counterbore 1c, the conical portion 13b is opposite to the air guide perforation, an inner channel (axial channel) of the split joint 13 is communicated with the main body of the liquid guide blind hole 1a and the first counterbore 1c, the tail end of the conical portion 13b of the split joint 13 abuts against a retainer ring 14 embedded in the inner side wall of the first counterbore 1c, namely the retainer ring 14 is matched with the end face of the second counterbore 1d to axially position the split joint 13, a notch plane 13b-1 is formed on the side wall of the conical portion 13b, the notch plane 13b-1 extends to the tail end of the conical portion 13b, a through hole 1e is formed between the tail portion of the conical portion 13b and the retainer ring 14, and the through hole 1e is communicated with the inner cavities of the two sides of the first counterbore 1c located on the side of the first counterbore 14.
The tail end of the conical part 13b of the split joint 13 is abutted against the retainer ring 14, if a notch plane 13b-1 is not arranged, the tail plane of the conical part 13b is integrally attached to the retainer ring 14, the annular gap between the split joint 13 and the first counter bore 1c of the main shaft 1 and the annular gap between the inner pipe of the drilling tool and the first counter bore 1c are not communicated, after the notch plane 13b-1 is arranged, a through hole 1e is formed between the tail part of the conical part 13b in the extending direction of the notch plane 13b-1 and the retainer ring 14, and the through hole 1e is communicated with the two gaps, namely, the through hole 1e is positioned in the extending direction of the notch plane 13b-1, and the notch plane 13b-1 has a guiding effect on air flow; in addition, the side wall of the conical part 13b between the adjacent notch planes 13b-1 presents an arc surface (the reserved part of the conical surface), when the split joint 13 rotates to the position that the side wall presenting the arc surface is aligned with the air guide perforation, more air flows are guided to the notch planes 13b-1 at two sides under the action of the arc surface, and then flow to the through hole 1e, so that the air pressure loss can be effectively reduced; if the remaining portion of the conical surface is replaced by a flat surface, the tail portion of the conical portion 13b located in the extending direction of the replacing flat surface still abuts against the retainer ring 14, which results in that when the split joint 13 rotates to the position where the replacing flat surface is aligned with the air guide perforation, more air flows act on the replacing flat surface and are guided to the retainer ring 14 instead of the through hole 1e, and air pressure loss cannot be effectively reduced.
In this embodiment, the outer sleeve 2 both ends pass through packing structure and main shaft 1 sealing fit, packing structure includes packing 5, gland (left gland 3, right gland 8 respectively), clamping ring 4, packing 5 fills the clearance with between outer sleeve 2 and the main shaft 1, the outside tip of packing 5 is contradicted by clamping part of clamping ring 4, its inboard tip supports on the limit flange of outer sleeve 2 inboard, the gland passes through round short bolt and outer sleeve 2 fixed connection, and left gland 3, right gland 8 pass through round long bolt 15, nut 16 connect as a whole, clamping ring 4 cover locate between main shaft 1 and the gland and with gland locate fit. The outer side wall of the main shaft 1 is provided with a convex spigot, the inner side wall of the compression ring 4 is provided with a concave spigot, and the filler structures on the left side and the right side limit the axial position of the outer sleeve through concave-convex stop fit. The packing structure is compact in integral structure, detachable, and convenient for later maintenance, cleaning and replacement of parts.
In this embodiment, the pair of liquid guiding holes 1b is provided, the axes of the pair of liquid guiding holes 1b are located in the same axial plane and are arranged in a partially staggered manner along the axial direction, i.e. the distance between the axes of the two partially staggered positions is smaller than the radius of the liquid guiding hole 1 b.
In this embodiment, the clamping ring 4 is formed by assembling two semicircular ring-shaped clamping ring halves 4a, so that the clamping ring 4 is convenient to assemble. The outer side wall of the compression ring half body 4a is embedded with a flat key 17, and the flat key 17 is embedded into a positioning groove on the inner side wall of the gland, so that the compression ring half body 4a can be prevented from rotating. In addition, be connected with the glib and offered the oiling oil circuit on the gland, the lubrication circuit has been offered to the inside wall of clamping ring 4, glib, oiling oil circuit and lubrication circuit communicate in proper order.
In this embodiment, the gland coaxial coupling in outer sleeve 2 left side has left end cover 6, left end cover 6 is equipped with first sealing washer 7 and main shaft 1 sealing fit through inlaying to the laminating of left gland 3, and external cover 9 is equipped with another sealing washer 7 and main shaft 1 sealing fit through inlaying to the laminating of right gland 8, and these two first sealing washer 7 mainly used prevent that lubricating oil from leaking and external impurity flies into. In addition, the external sleeve 9 is positioned at two sides of the air guide groove 9a and is in sealing fit with the main shaft 1 through a pair of embedded second sealing rings so as to prevent air leakage and air pressure loss.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a dual shunt of top drive rig, includes main shaft, outer sleeve and reposition of redundant personnel joint, its characterized in that:
the main shaft is provided with a liquid guide blind hole extending along the axial direction and a liquid guide perforation extending along the radial direction and communicated with the liquid guide blind hole, the liquid guide blind hole is internally provided with a first counter bore and a second counter bore which are coaxially arranged from the opening end in sequence, and the main shaft is provided with an air guide perforation extending along the radial direction and communicated with the first counter bore;
the outer sleeve is sleeved outside the main shaft, two ends of the outer sleeve are in sealing fit with the main shaft, the outer side of the outer sleeve is provided with a liquid inlet joint, and the inner side of the outer sleeve is provided with a liquid guide groove which is arranged around the main shaft and communicated with the liquid inlet joint and the liquid guide blind hole;
the right side of the outer sleeve is coaxially connected with an external sleeve, two ends of the external sleeve are in sealing fit with the main shaft, the outer side of the external sleeve is connected with an air inlet joint, and the inner side of the external sleeve is provided with an air guide groove which is arranged around the main shaft and is communicated with the air inlet joint and the air guide perforation;
the split joint comprises a straight barrel part and a conical part, wherein the end part of the straight barrel part of the split joint is inserted into the second counter bore, the rest part of the straight barrel part and the conical part are integrally arranged in the first counter bore, the conical part is opposite to the air guide perforation, an inner channel of the split joint is communicated with the liquid guide blind hole and the first counter bore, the tail end of the conical part of the split joint abuts against a check ring embedded in the inner side wall of the first counter bore, a notch plane is formed on the side wall of the conical part, and extends to the tail end of the conical part, so that a through hole is formed between the tail part of the conical part and the check ring, and the through hole is communicated with an inner cavity on two sides of the check ring.
2. The dual diverter of a top drive drilling machine of claim 1, wherein: the two ends of the outer sleeve are in sealing fit with the main shaft through a packing structure, the packing structure comprises packing, a gland and a compression ring, the packing fills a gap between the outer sleeve and the main shaft, the outer side end part of the packing is abutted by the press-mounting part of the compression ring, the inner side end part of the packing abuts against the limit flange on the inner side of the outer sleeve, the gland is fixedly connected with the outer sleeve through a circle of bolts, and the compression ring is sleeved between the main shaft and the gland and is in positioning fit with the gland.
3. A dual diverter for a top drive drilling machine as defined in claim 2, wherein: the outer side wall of main shaft is equipped with protruding tang, the inside wall of clamping ring is equipped with concave tang, and left and right sides filler structure is through unsmooth stopping cooperation restriction outer tube axial position.
4. A dual diverter for a top drive drilling machine as defined in claim 2, wherein: the compression rings are formed by splicing two half compression ring bodies which are arranged in a semicircular mode.
5. The dual diverter of a top drive drilling machine of claim 4, wherein: the lateral wall of the compression ring half body is embedded with a flat key, and the flat key is embedded into a positioning groove on the inner side wall of the gland.
6. A dual diverter for a top drive drilling machine as defined in claim 2, wherein: the gland is connected with a nozzle and is provided with an oiling oil way, the inner side wall of the compression ring is provided with a lubricating oil way, and the nozzle, the oiling oil way and the lubricating oil way are sequentially communicated.
7. The dual diverter of a top drive drilling machine of claim 1, wherein: the liquid guide perforation is provided with a pair of liquid guide perforation, the axes of the pair of liquid guide perforation are positioned in the same axial plane and are arranged along the axial part in a staggered mode, and the distance between the axes of the two liquid guide perforation is smaller than the radius of the liquid guide perforation.
8. The dual diverter of a top drive drilling machine of claim 1, wherein: the gland on the left side of the outer sleeve is coaxially connected with a left end cover, and the left end cover is in sealing fit with the main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311392178.0A CN117248825B (en) | 2023-10-25 | 2023-10-25 | Dual shunt of top drive drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311392178.0A CN117248825B (en) | 2023-10-25 | 2023-10-25 | Dual shunt of top drive drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117248825A CN117248825A (en) | 2023-12-19 |
| CN117248825B true CN117248825B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311392178.0A Active CN117248825B (en) | 2023-10-25 | 2023-10-25 | Dual shunt of top drive drilling machine |
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| CN107724961A (en) * | 2017-11-14 | 2018-02-23 | 吉林大学 | A kind of dual-purpose air water tap of reverse circulation for air drilling |
| CN208952478U (en) * | 2018-09-28 | 2019-06-07 | 金山门科技有限公司 | Novel cooling medium distributor |
| CN111287660A (en) * | 2020-04-07 | 2020-06-16 | 无锡市安曼工程机械有限公司 | Impact rotary jet drilling tool |
| WO2020249028A1 (en) * | 2019-06-13 | 2020-12-17 | 中石化石油工程技术服务有限公司 | Double-flow-channel fluid injection apparatus |
| CN113250619A (en) * | 2021-06-22 | 2021-08-13 | 无锡市安曼工程机械有限公司 | Drilling tool switching assembly and rotary jet drilling tool |
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| CN204626390U (en) * | 2015-04-02 | 2015-09-09 | 无锡市安曼工程机械有限公司 | A kind of drilling tool current divider for quadruple high-pressure rotary-spray |
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| WO2020249028A1 (en) * | 2019-06-13 | 2020-12-17 | 中石化石油工程技术服务有限公司 | Double-flow-channel fluid injection apparatus |
| CN111287660A (en) * | 2020-04-07 | 2020-06-16 | 无锡市安曼工程机械有限公司 | Impact rotary jet drilling tool |
| CN113250619A (en) * | 2021-06-22 | 2021-08-13 | 无锡市安曼工程机械有限公司 | Drilling tool switching assembly and rotary jet drilling tool |
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