CN208220664U - A kind of soft seam pressure release drilling rod - Google Patents
A kind of soft seam pressure release drilling rod Download PDFInfo
- Publication number
- CN208220664U CN208220664U CN201820658956.4U CN201820658956U CN208220664U CN 208220664 U CN208220664 U CN 208220664U CN 201820658956 U CN201820658956 U CN 201820658956U CN 208220664 U CN208220664 U CN 208220664U
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- drilling rod
- casing
- rod mandrel
- connecting portion
- pressure release
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Abstract
The utility model discloses a kind of soft seam pressure release drilling rods, and the drilling rod mandrel and casing of helical blade are had including appearance, and the drilling rod mandrel and casing are hollow shaft, and drilling rod mandrel center is equipped with hydraulic pipeline, and described sleeve pipe center is equipped with water return pipeline；The drilling rod mandrel is installed in the water return pipeline of described sleeve pipe by support frame, and is equipped with bearing between support frame as described above and drilling rod mandrel；The both ends of the drilling rod mandrel and casing are respectively equipped with mutually matched first connecting portion and second connecting portion.Advantage is that the utility model can be by hydraulic pipeline conveying high-pressure water flow or air-flow in drilling operation, the clast generated in drilling operation is discharged by water return pipeline under the action of high pressure water flow or air-flow, to reduce the resistance in drilling operation, casing can will get into the cave simultaneously separates with drilling rod mandrel, it is effectively prevented from bit freezing, increases one-tenth porosity.
Description
Technical field
The utility model relates to drilling tool technical field, in particular to a kind of soft seam pressure release drilling rod.
Background technique
Due to the presence of gas or water body in rock stratum, inside often there is the pressure for being greater than atmospheric pressure, it is more typical
Be exactly methane gas or coal seam cavity etc. during seam mining, if carrying out pressure release not before exploitation, it is easy to
Pressure loss release occurs during exploitation, causes safety accident.Coal seam pressure release at present mainly takes the form got into the cave
Pressure release is carried out, but since coal seam is softer, takes out to bore to be easy to cause to get into the cave after drilling and collapse, the yield rate got into the cave is low,
And soft coal seam itself lacks support force, and coal seam and drilling cuttings can generate very big pressure and resistance to drilling rod, therefore
It is easy for leading to the generation of bit freezing when carrying out deeper drilling operation.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of soft seam pressure release drilling rods, and brill can effectively be discharged
Bits reduce the resistance in drilling process, and are not easy bit freezing, high yield rate of getting into the cave.
The technical solution of the utility model are as follows:
A kind of soft seam pressure release drilling rod has the drilling rod mandrel and casing of helical blade, the drilling rod mandrel including appearance
It is hollow shaft with casing, drilling rod mandrel center is equipped with hydraulic pipeline, and described sleeve pipe center is equipped with water return pipeline；The brill
Bar mandrel is installed in the water return pipeline of described sleeve pipe by support frame, and is installed between support frame as described above and drilling rod mandrel
There is bearing；The both ends of the drilling rod mandrel and casing are respectively equipped with mutually matched first connecting portion and second connecting portion.
Further, first connecting portion and second connecting portion are respectively mutually matched inner polygon axle sleeve and outer polygon
Axis.
Further, first connecting portion and second connecting portion are fixed by pin.
Further, casing is the dedicated seamless steel pipe of etch-proof petroleum geology.
Further, bearing is thrust bearing.
The utility model has the beneficial effect that
The utility model high pressure water flow can be carried out by hydraulic pipeline in drilling operation or air-flow conveys, in high pressure
The clast generated in drilling operation is discharged by water return pipeline under the action of water flow or air-flow, to reduce in drilling operation
Resistance, while the external support for having casing, avoid the direct pressure-bearing of drilling rod mandrel, and only the part that connect with drill bit of end is
Meeting pressure-bearing reduces the frictional force of drilling rod mandrel, therefore the utility model is not easy bit freezing, and creeps into rear sleeve immediately in drill bit
It supports and gets into the cave, casing itself does not rotate, it is possible thereby to which the rock stratum for the surrounding that avoids getting into the cave is in continuously drilling operation
It is slack and undisciplined, it finally results in get into the cave after pumping is bored and collapse.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the right side structural representation of Fig. 1；
Fig. 3 is the left view structural representation of Fig. 1.
In figure: 1- drilling rod mandrel, 11- hydraulic pipeline, 2- casing, 3- helical blade, 4- water return pipeline, 5- bearing, 6- branch
Support, 7- first connecting portion, 8- second connecting portion.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
It is as shown in Figs. 1-3:
A kind of soft seam pressure release drilling rod has the drilling rod mandrel 1 and casing 2 of helical blade, the drilling rod core including appearance
Axis 1 and casing 2 are hollow shaft, and 1 center of drilling rod mandrel is equipped with hydraulic pipeline 11, and 2 center of described sleeve pipe is equipped with return pipe
Road 4；The drilling rod mandrel 1 is installed in the water return pipeline 4 of casing 2 by support frame 6, and in support frame as described above 6 and drilling rod
Bearing 5 is installed between mandrel 1；The both ends of the drilling rod mandrel 1 and casing 2 are respectively equipped with mutually matched first connecting portion
7 and second connecting portion 8.
Specifically, first connecting portion 7 and second connecting portion 8 are respectively mutually matched inner polygon axle sleeve and outer polygon
Outer polygon shaft is inserted into inner polygon axle sleeve when connection by axis, is in order to avoid skidding, more stably using polygon
Transfer of torque, first connecting portion 7 and second connecting portion 8 can also take the mode of threaded connection.
Specifically, first connecting portion 7 and second connecting portion 8 are fixed by pin, naturally it is also possible in other way
It is fixed.
Specifically, because casing is directly contacted with coal seam, and often contain a large amount of corrosive substance in coal seam, in order to
Guarantee the service life of casing, casing 2 is the dedicated seamless steel pipe of etch-proof petroleum geology.
Specifically, because at work, drilling rod mandrel 1 is more the effect that will receive torque and thrust, in order to guarantee
The long-term normal operation of bearing 5, bearing 5 are thrust bearing.
Working principle: when drilling machine is worked, drilling machine only drive drilling rod mandrel 1 rotate, the end of drilling rod mandrel 1 with
Drill bit connection to drive drill bit rotation to carry out operation, and casing 2 be it is fixed, when drilling operation, can pass through drilling rod core
The hydraulic pipeline 11 of axis 1 carries out high pressure water flow or air-flow conveying, will be in drilling operation under the action of high pressure water flow or air-flow
The clast of generation is discharged by water return pipeline 4, to reduce the resistance in drilling operation, the spiral having outside drilling rod mandrel 1
Blade 3 can accelerate the discharge of clast, while the external support for having casing 2, avoid the direct pressure-bearing of drilling rod mandrel 1, only
The part that end is connect with drill bit just can pressure-bearing, reduce the frictional force of drilling rod mandrel 1, therefore the utility model is not easy bit freezing,
And support and get into the cave immediately in drill bit drilling rear sleeve 2, casing 2 itself does not rotate, it is possible thereby to avoid surrounding of getting into the cave
Rock stratum is slack and undisciplined in continuously drilling operation, finally results in get into the cave after pumping is bored and collapse.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (5)
1. a kind of soft seam pressure release drilling rod has the drilling rod mandrel (1) and casing (2) of helical blade including appearance, feature exists
It is hollow shaft in: the drilling rod mandrel (1) and casing (2), drilling rod mandrel (1) center is equipped with hydraulic pipeline (11), institute
Casing (2) center is stated equipped with water return pipeline (4)；The drilling rod mandrel (1) is installed on described sleeve pipe (2) by support frame (6)
In water return pipeline (4), and bearing is installed between support frame as described above (6) and drilling rod mandrel (1)；The drilling rod mandrel (1)
Mutually matched first connecting portion (7) and second connecting portion (8) are respectively equipped with the both ends of casing (2).
2. soft seam pressure release drilling rod according to claim 1, it is characterised in that: the first connecting portion (7) and second connects
Socket part (8) is respectively mutually matched inner polygon axle sleeve and outer polygon shaft.
3. soft seam pressure release drilling rod according to claim 2, it is characterised in that: the first connecting portion (7) and second connects
Socket part (8) is fixed by pin.
4. soft seam pressure release drilling rod according to claim 1-3, it is characterised in that: described sleeve pipe (2) is anti-corrosion
The dedicated seamless steel pipe of the petroleum geology of erosion.
5. soft seam pressure release drilling rod according to claim 1-3, it is characterised in that: the bearing (5) is thrust
Bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820658956.4U CN208220664U (en) | 2018-05-04 | 2018-05-04 | A kind of soft seam pressure release drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820658956.4U CN208220664U (en) | 2018-05-04 | 2018-05-04 | A kind of soft seam pressure release drilling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208220664U true CN208220664U (en) | 2018-12-11 |
Family
ID=64510367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820658956.4U Active CN208220664U (en) | 2018-05-04 | 2018-05-04 | A kind of soft seam pressure release drilling rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN208220664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593852A (en) * | 2020-12-11 | 2021-04-02 | 山东源运通矿山装备科技有限公司 | Guide tube |
-
2018
- 2018-05-04 CN CN201820658956.4U patent/CN208220664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593852A (en) * | 2020-12-11 | 2021-04-02 | 山东源运通矿山装备科技有限公司 | Guide tube |
| CN112593852B (en) * | 2020-12-11 | 2022-06-14 | 邹城兖矿泰德工贸有限公司 | Guide tube |
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