CN206562914U - A kind of device for improving coal bed drilling hole wall slickness - Google Patents
A kind of device for improving coal bed drilling hole wall slickness Download PDFInfo
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- CN206562914U CN206562914U CN201720250518.XU CN201720250518U CN206562914U CN 206562914 U CN206562914 U CN 206562914U CN 201720250518 U CN201720250518 U CN 201720250518U CN 206562914 U CN206562914 U CN 206562914U
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- hole wall
- rubber sleeve
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Abstract
The utility model is related to a kind of device for improving coal bed drilling hole wall slickness, can exclude the cinder worn and torn while abrasion drilling surrounding medium protruding parts, the rough surface of coal bed drilling is become into smooth surface；If hole packer is placed on into the position, necessarily with good sealing property, and accuracy, gas extraction concentration and the effect of coal-bed flooding of determination of coal seam gas pressure data are finally improved.
Description
Technical field
The utility model is related to a kind of device of improvement coal bed drilling Hole Wall Roughness, and coal seam is improved especially with regard to one kind
The device of borehole wall slickness.
Background technology
In underground coal mine, the work such as determination of coal seam gas pressure, gas pumping and coal-bed flooding is required to sealing drilling, envelope
Hole device is a kind of conventional borehole sealing device, and its sealing property is the key of above-mentioned work success or failure.
Hole packer is typically made up of 1 layer of steel wire or multilayer, inwall rubber and outer surface rubber；By being noted into hole packer
Enter high pressure inflation fluid, hole packer expansion, the rubber of its outer surface is contacted with borehole wall, hinders fluid（Including gas and liquid）
Infiltration, realizes sealing function.
During drilling construction, because the rocking of drilling rod, ature of coal are soft and the drilling medium reason of ambient stress collection, coal seam
The wall that drills is often relatively rough, and this will influence hole packer to the sealing effectiveness of drilling.
On disclosed data document, about drilling construction research be concentrated mainly on raising drill depth, prevention drill
Collapse hole and in terms of effectively excluding drilling cinder, and on how to improve the research of borehole wall slickness, rare report.
Therefore, in order to further improve the sealing property of hole packer, coal-bed gas is more accurately determined using hole packer
Pressure, extraction go out the gas of higher concentration and obtain more preferable coal seam infusion effect, it is necessary to the smooth drilling of hole wall of constructing out；
Explore a kind of device that can improve coal bed drilling hole wall slickness and just seem particularly urgent.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of coal bed drilling hole wall slickness of can improving
Device.
Solving the technical scheme of above-mentioned technical problem is：A kind of device for improving coal bed drilling hole wall slickness, including bore
Machine, drilling rod, breather pipe, sanding apparatus, gas flow converter, pressure wind apparatus and power supply；The power supply is powered for rig, presses wind
Device provides gases at high pressure for breather pipe；The drilling rod is arranged on rig, and front end and the sanding apparatus of drilling rod are tightly connected；Institute
State the rubber sleeve that sanding apparatus includes, and the steel sand outside rubber sleeve；The breather pipe is successively axially across rig, brill
Bar and sanding apparatus, its rear end are stretched out by pressure ventilation pipe connection pressure wind apparatus, front end from the front end of sanding apparatus, and it is located at polishing
Position in device is provided with gas flow converter；Rotated in use, rig is powered, drilling rod drives sanding apparatus rotation, beats
Pressure wind apparatus is opened, air-flow enters breather pipe, under the regulation of gas flow converter, air-flow produces two kinds of flow directions, Yi Zhongwei, gas
Stream, which is fully entered, makes its expansion be adjacent to hole wall to hole wall rotary-grinding in rubber sleeve；Another to be, air-flow sprays from breather pipe front end
Enter foot of hole, rubber sleeve shrinks, flow into the gas of foot of hole by the cinder of abrasion between rubber sleeve and borehole wall
Gap is carried away, by outside cinder tap；Two kinds of situations alternately, slickness operation are implemented to borehole wall.
The gas flow converter includes reducing steel tube and normal footpath steel pipe, and normal footpath penstock installation is the two of reducing steel tube
Side, the internal diameter of reducing steel tube is more than the internal diameter of normal footpath steel pipe；Normal footpath steel pipe is identical with the internal diameter of breather pipe, and its two ends respectively with
Breather pipe is connected；Distinguish in the normal footpath steel pipe of reducing steel tube both sides between fixed support, support and be connected with spring, the bullet
Piston is connected with the middle part of spring, is defined by air current flow direction, is set out on the normal footpath steel pipe tube wall at reducing steel tube rear
Stomata；The piston is moved back and forth in the normal footpath steel pipe and reducing steel tube between venthole and reducing steel tube, realizes air-flow
Changed between entering rubber sleeve and entering two kinds of situations of drilling.
The rubber sleeve is cylinder, and two-port is shunk, and by end face seal；The center of both ends of the surface, which is equipped with, can make to lead to
The through hole that tracheae is passed through, the outer rim of both ends of the surface radially sets gradually annular coupler and cylindric termination from inside to outside, described
The two ends of rubber sleeve are wrapped in the outside of termination and by clip fit sealing, wherein the distal end of a termination is provided with internal thread, with
Drill rod thread is connected；The drilling rod is twist drill rods.
Steel sand has been sprayed on the surface of the rubber sleeve, and is firmly bonded with binding agent.
The drilling rod is provided with external screw thread by connector and motor connection, one end of drilling rod, and the other end is provided with mounting hole, peace
The hole wall for filling hole is provided with pin-and-hole, is fixed by mounting hole and connector grafting and with pin.
The breather pipe by the steel pipe in rubber sleeve, be arranged on the axial passage and and rig at drilling rod center
The hollow connector of connection is formed by connecting by sealed bearings connector head and the tail, can prevent the high pressure gas leakage of input.
The rig provides electric power, and pass through pressure ventilation pipe connection pressure wind apparatus, pressure by cable connection power supply for it
Switch is set on airduct.
A kind of method for improving coal bed drilling hole wall slickness, is concretely comprised the following steps：Conventional method construction coal is used first
Drilling；Equipment of drilling is exited, drilling is sent into the front end that will improve the device of coal bed drilling hole wall slickness, until where rubber sleeve
Position, which is reached, to be needed to improve the position of hole wall slickness；The electric current of cable, rig rotation are connected, and whole dress is driven by drilling rod
Put rotation；Starting switch, gases at high pressure enter breather pipe, and piston is back and forth migrated in reducing steel tube and normal footpath steel pipe periodically,
When piston is located in the normal footpath steel pipe between venthole and reducing steel tube, gases at high pressure enter rubber sleeve, and rubber sleeve expands simultaneously
It is in close contact with hole wall, by rotation, its outside steel sand abrasion hole wall protrudes coal body；When piston is moved in reducing steel tube
When, air-flow enters drilling front end by breather pipe, and rubber sleeve shrinks, and air-flow carries the cinder of abrasion from rubber sleeve and drill hole inner wall
Gap gush out.
The beneficial effects of the utility model are：The utility model provides a kind of dedicated for raising coal bed drilling hole wall light
The device of slip, can exclude the cinder worn and torn, by coal bed drilling while abrasion drilling surrounding medium protruding parts
Rough surface becomes smooth surface；If hole packer is placed on into the position, necessarily with good sealing property, and
Final accuracy, gas extraction concentration and the effect of coal-bed flooding for improving determination of coal seam gas pressure data.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of gas flow converter.
Fig. 3 is the sectional view of support.
Marked in figure as follows：1. rig, 2. drilling rods, 3. breather pipes, 4. sanding apparatus, 4-1. rubber sleeves, 4-2. steel sands,
Terminal adapter before 4-3., 4-4. backend connectors, the preposition terminations of 4-5., the rearmounted terminations of 4-6., 5. gas flow converters, 5-1.
After-poppet, 5-2. rear springs, 5-3. ventholes, 5-4. pistons, 5-5. reducing steel tubes, the preposition springs of 5-6., 5-7. fore-stocks,
The normal footpath steel pipes of 5-8., 6. pressure ventilation pipes, 7. switches, 8. cables, 9. clips, 10. sealed bearings connectors, 11. connectors, 12. peaces
Fill hole, 13. pins.
Embodiment
As illustrated in the accompanying drawings from 1 to 3, a kind of device for improving coal bed drilling hole wall slickness, including rig 1, drilling rod 2, breather pipe
3rd, sanding apparatus 4, gas flow converter 5, pressure wind apparatus and power supply；The power supply is that rig 1 is powered, and pressure wind apparatus is ventilation
Pipe 3 provides gases at high pressure；The drilling rod 2 is arranged on rig 1, and front end and the sanding apparatus 4 of drilling rod 1 are tightly connected；It is described to beat
The rubber sleeve 4-1 that mill apparatus 4 includes, and the steel sand 4-2 outside rubber sleeve 4-1；The breather pipe 3 successively axially across
Rig 1, drilling rod 2 and sanding apparatus 4, its rear end is by the connection pressure wind apparatus of pressure ventilation pipe 6, and front end is stretched from the front end of sanding apparatus 4
Go out, its position being located in sanding apparatus 4 is provided with gas flow converter 5；Rotated in use, rig 1 is powered, the band of drilling rod 2
Dynamic sanding apparatus 4 rotates, and opens pressure wind apparatus, air-flow enters breather pipe 3, under the regulation of gas flow converter 5, air-flow production
Raw two kinds of flow directions, Yi Zhongwei, air-flow, which is fully entered, makes its expansion be adjacent to hole wall to hole wall rotary-grinding in rubber sleeve 4-1；It is another
Kind it is that air-flow sprays into foot of hole from the front end of breather pipe 3, rubber sleeve 4-1 shrinks, flows into the gas of foot of hole by the coal of abrasion
Slag is carried away from the gap between rubber sleeve 4-1 and borehole wall, by outside cinder tap；Two kinds of situations are alternately, right
Borehole wall implements slickness operation.
The gas flow converter 5 includes reducing steel tube 5-5 and normal footpath steel pipe 5-8, and normal footpath steel pipe 5-8 is arranged on reducing
Steel pipe 5-5 both sides, reducing steel tube 5-5 internal diameter is more than the internal diameter of normal footpath steel pipe 8；Normal footpath steel pipe 5-8 and breather pipe 3 internal diameter
It is identical, and its two ends is connected with breather pipe 3 respectively；Fixed branch is distinguished in the normal footpath steel pipe 5-8 of reducing steel tube 5-5 both sides
It is connected between frame, support in the middle part of spring, the spring and is connected with piston 5-4, is defined by air current flow direction, positioned at reducing
Venthole 5-3 is set on the normal footpath steel pipe 5-8 tube walls at steel pipe 5-5 rears；The piston 5-4 is in venthole 5-3 and reducing steel tube
Moved back and forth in normal footpath steel pipe 5-8 and reducing steel tube 5-5 between 5-5, realize that air-flow is entering rubber sleeve 4-1 and entering brill
Changed between the situation of two kinds of hole.
The gas flow converter 5, by after-poppet 5-1, rear spring 5-2, venthole 5-3, piston 5-4, reducing steel
Pipe 5-5, preposition spring 5-6, fore-stock 5-7 and normal footpath steel pipe 5-8 compositions；After-poppet 5-1 and rear spring 5-2 is arranged on reducing
In the normal footpath steel pipe 5-8 at steel pipe 5-5 rear portions, preposition spring 5-6 and fore-stock 5-7 are arranged on the anterior Chang Jing of reducing steel tube 5-5
In steel pipe 5-8, venthole 5-3 is arranged on the normal footpath steel pipe 5-8 tube walls at reducing steel tube 5-5 rear portions, under original state, piston 5-
4 block venthole 5-3.After ventilation, when gas pressure is relatively low, piston 5-4 is displaced slightly forwards, and air-flow is from venthole 5-3
Into in sealed rubber sleeve 4-1, rubber sleeve 4 is by compression swelling；When gas pressure is higher, piston 5-4 is significantly moved forward,
Into reducing steel tube 5-5, because reducing steel tube 5-5 diameter is more than piston 5-4 diameter, air-flow can be from gap between the two
Foot of hole is flowed to, one side gas pressure can reduce, rubber sleeve 4-1 shrinks, diameter reduces, on the other hand, flow into drilling bottom
The cinder that gap of the gas at end between rubber sleeve 4-1 and drilling rib carries abrasion is flowed to outside hole, with exclusion abrasion coal
The function of slag.After the piston 5-4 reaches reducing steel tube 5-5 under gases at high pressure effect, under effect of inertia, it may proceed to omit
Micro- reach；But,, will necessarily be under rear spring 5-2 and preposition spring 5-6 synergy because gas pressure reduces
After move, and across reducing steel tube 5-5 reducer, allow high pressure draught to enter confined space by venthole 5-3 completely again,
Rubber sleeve 4-1 is re-inflated, into next cycle.
The rubber sleeve 4-1 is cylinder, and two-port is shunk, and by end face seal；The center of both ends of the surface is equipped with can
The through hole for passing through breather pipe 3, the outer rim of both ends of the surface radially sets gradually annular coupler and cylindric termination from inside to outside,
The two ends of the rubber sleeve 4-1 are wrapped in the outside of termination and by the fit sealing of clip 9, wherein the distal end of a termination is provided with interior
Screw thread, is threadedly coupled with drilling rod 2；The drilling rod 2 is twist drill rods.
Steel sand 4-2 has been sprayed on the surface of the rubber sleeve 4-1, and is firmly bonded with binding agent；When rig 17 passes through fried dough twist
When drilling rod 13 drives its rotation, steel sand 4-2 and drilling rib protruding parts interact, and are worn and torn；When rise gas pressure
Power, increases the diameter of rubber sleeve 4, you can the wear range of the protruding parts of increase drilling rib, so that it is smooth to obtain hole wall
Coal bed drilling.
The drilling rod 2 passes through connector 11 and motor connection.One end of drilling rod 2 is provided with external screw thread, and the other end is provided with installation
Hole 12, the hole wall of mounting hole 12 is provided with pin-and-hole, is fixed by mounting hole 12 with the grafting of connector 11 and with pin 13.
The breather pipe 3 by the steel pipe in rubber sleeve 4-1, be arranged on the center of drilling rod 2 axial passage and
The hollow connector 11 being connected with rig 1 is formed by connecting by the head and the tail of sealed bearings connector 10, can prevent the high pressure gas of input
Body is leaked.
The termination is divided into preposition termination 4-5 and rearmounted termination 4-6, and both are external diameter 50mm, internal diameter 46mm steel pipe,
The preposition a length of 100mm of termination 4-5, the rearmounted long 200mm of termination 4-6；The making material of clip 9 is stainless steel, model KS-K；Connection
The material for connecing device 11 is stainless steel, external diameter 46mm, internal diameter 16mm, thick 10mm.
The connector is divided into preceding terminal adapter 4-3 and backend connector 4-4, is stainless steel annulus, external diameter 46mm, interior
Footpath 16mm, thick 10mm.
The rig 1 connects power supply by cable 8, provides electric power for it, and fill by the connection pressure wind of pressure ventilation pipe 6
Put, switch 7 is set on pressure ventilation pipe 6；While drilling rod 2 and miscellaneous part rotation is driven, gas, the pressure and stream of gas are inputted
Speed can be adjusted by switch 7.
The connector 11 and twist drill rods 2 are coupled by pin 13 using pin；The front end of connector 11 and fluted drill
The rear end inner tube of bar 2 is coupled using sealed bearings connector 10, and connecting mode is conical surface encryption seal combination connection.
The rig 1 is coupled with connector 11 using bearing；Cable 8 is coupled with rig 1 using electric welding, and pressure ventilation pipe 6 is with boring
Machine 1 uses thread connection, and switch 7 uses thread connection with pressure ventilation pipe 6.
The after-poppet 5-1 and fore-stock 5-7 are connected and fixed in the inner chamber of breather pipe 3 by electric welding；After-poppet 5-1 and
Piston 5-4 is coupled using rear spring 5-2, and connecting mode couples for electric welding；Fore-stock 5-7 and piston 5-4 uses preposition spring
5-6 couples, and connecting mode couples for electric welding；Reducing steel tube 5-5 internal diameter is bigger than breather pipe 3, section specification and the ventilation at two ends
Pipe 3 is identical, and venthole 5-3 is dug on the tube wall of breather pipe 3.
Concrete technology method is as follows：First using the drilling of conventional method construction coal；Equipment of drilling is exited, the present apparatus is sent
Enter drilling, need to improve the position of hole wall slickness until position where rubber sleeve 4-1 is reached；Connect the electric current of cable 8, rig
1 rotation, and drive whole device to rotate by twist drill rods 2；Starting switch 7, gases at high pressure enter breather pipe 3, and piston 5-4 exists
Reducing steel tube 5-5 and normal footpath steel pipe 5-8 periodically are back and forth migrated, when piston 5-4 is located at venthole 5-3 and reducing steel tube 5-5
Between normal footpath steel pipe 5-8 in when, gases at high pressure enter rubber sleeve 4-1, rubber sleeve 4-1 expansion simultaneously with hole wall be in close contact, lead to
Rotation is crossed, its outside steel sand 4-2 abrasion hole wall protrudes coal body；When piston 5-4 is moved in reducing steel tube 5-5, air-flow
Drilling front end is entered by breather pipe 3, rubber sleeve 4-1 shrinks, air-flow carries the cinder of abrasion from rubber sleeve 4-1 and drill hole inner wall
Gap gush out.
One embodiment of the present utility model is as follows：
The termination is divided into preposition termination 4-5 and rearmounted termination 4-6, and both are external diameter 50mm, internal diameter 46mm steel pipe,
The preposition a length of 100mm of termination 4-5, the rearmounted long 200mm of termination 4-6；The making material of clip 9 is stainless steel, model KS-K；Connection
The material for connecing device 11 is stainless steel, external diameter 46mm, internal diameter 16mm, thick 10mm.
The making material of the rubber sleeve 4-1 is rubber, external diameter 70mm, internal diameter 64mm, long 800mm；Steel sand 4-2 making
Material is carborundum, particle diameter 0.1mm；The making material of the lengths of steel pipes of breather pipe 3 is stainless steel, external diameter 16mm, internal diameter 12mm, gas
Direction of flow converter 5 is classified as two sections that length is respectively 600mm and 700mm.
The making material of the sealed bearings connector 10 is stainless steel, external diameter 20mm, internal diameter 12mm, long 5mm；It is described to bore
Bar 2 is hollow twist drill rods, long 1000mm, diameter 52mm；A diameter of 4mm of the pin 13, long 15mm；The connector 11
Making material is stainless steel, diameter 46mm, long 200mm；The rig 1 is ZM15 moulded coal electric drills；The pressure ventilation pipe 6 is high-pressure glue
Pipe, external diameter 30mm, internal diameter 26mm, long 3000mm；The switch 7 is RQZ series of security stop valves；The model of cable 8
YJV22/ZR-1KV, long 3000mm.
The making material of the after-poppet 5-1 and fore-stock 5-7 are stainless steel, respectively by the welding of 3 stainless steel strips
Into pyramidal structure, the diameter 2mm, long 6mm of every stainless steel strip；Rear spring 5-2 and preposition spring 5-6 is ball
Spring, spring overall thick 10mm, long 200mm, the steel wire diameter for making spring is 1mm；Venthole 5-3 aperture is 1mm, piston 5-
4 making material is latex, in cylindrical, diameter 12mm, long 40mm.Reducing steel tube 5-5 external diameter 20mm, internal diameter 16mm,
Long 100mm.
The course of work of the present utility model is as follows：
First, in the rubber sleeve 4-1 good steel sand 4-2 of surface spraying, couple, arrange each portion of gas flow converter 5
Part：After-poppet 5-1, rear spring 5-2, venthole 5-3, piston 5-4, reducing steel tube 5-5, preposition spring 5-6, fore-stock 5-7
With normal footpath steel pipe 5-8, and couple each part by Fig. 1：It is connected and fixed rubber sleeve 4-1 and preposition termination 4-5, rearmounted using clip 9
Termination 4-6；Couple gas flow converter 5 and breather pipe 3, and be placed on rubber sleeve 4-1 inner chamber, pass through preceding terminal adapter 4-
3 and backend connector 4-4 couples, fixed；Couple twist drill rods 2 and rearmounted termination 4-6, and using sealed bearings connector 10
Connect front end inner tube and the rear end of steel pipe of twist drill rods 2；Couple rear end and the connector 11 of twist drill rods 2 using pin 13, adopt
Couple the rear end inner tube of twist drill rods 2 and the front end of connector 11 with sealed bearings connector 12；The He of rig 1 is coupled using bearing
Connector 11, using electric welding tie cable 8 and rig 1, using thread connection pressure ventilation pipe 6 and rig 1, is switched using thread connection
7 and pressure ventilation pipe 6.
Starting switch 7, determines minimum gas pressures and gas with various pressure of the piston 5-4 completely into reducing steel tube 5-5
Under the conditions of rubber sleeve 4-1 swell diameter, record data, closing switch 7.
Drilled using conventional method construction coal, after desired depth is reached, exit equipment of drilling；Will be of the present utility model
Device feeding drilling, needs to improve the position of hole wall slickness until position where rubber sleeve 4-1 is reached.
Starting switch 7, allows rubber sleeve 4-1 to expand and be in close contact with hole wall, connects the electric current of cable 8, rig 1 rotates,
And driving whole device to rotate by twist drill rods 2, steel sand 4-2 protrudes coal body interaction with hole wall, is worn and torn, come off
Get off.
By controlling switch 7, the pressure of appropriate increase air-flow allows piston 5-4 in reducing steel tube 5-5 and normal footpath steel pipe 5-8
Periodically is back and forth migrated, the cinder that the steel sand 4-2 coal bodies that protrude of abrasion hole wall wear and tear with airflow scouring alternately,
Both the coal body that hole wall protrudes had been worn away, can carried out in time again.
When the coal bed drilling diameter required for the gas pressure of input can reach rubber sleeve 4-1 swell diameter,
No longer increase gas pressure, allow device to work at this pressure 1min；A satisfactory smooth the wall of a borehole can just be obtained
Face.
After end-of-job, extracting apparatus；It can also detect that the hole wall wall of drilling diverse location is thick using inspection instrument for borehole
Rugosity, effect of comparative analysis the utility model device in terms of drilling wall slickness is improved.
Claims (8)
1. a kind of device for improving coal bed drilling hole wall slickness, it is characterised in that including rig, drilling rod, breather pipe, polishing dress
Put, gas flow converter, pressure wind apparatus and power supply；The power supply is powered for rig, and pressure wind apparatus provides high pressure for breather pipe
Gas；The drilling rod is arranged on rig, and front end and the sanding apparatus of drilling rod are tightly connected；The rubber that the sanding apparatus includes
Set, and the steel sand outside rubber sleeve；The breather pipe is successively axially across rig, drilling rod and sanding apparatus, its rear end
By pressure ventilation pipe connection pressure wind apparatus, front end is stretched out from the front end of sanding apparatus, and its position being located in sanding apparatus is provided with
Gas flow converter；Rotated in use, rig is powered, drilling rod drives sanding apparatus rotation, open pressure wind apparatus, air-flow enters
Breather pipe, under the regulation of gas flow converter, air-flow produces two kinds of flow directions, and Yi Zhongwei, air-flow is fully entered in rubber sleeve
Its expansion is set to be adjacent to hole wall to hole wall rotary-grinding；Another to be, air-flow sprays into foot of hole from breather pipe front end, and rubber sleeve is received
Contracting, the gas for flowing into foot of hole carries away gap of the cinder of abrasion between rubber sleeve and borehole wall, by cinder
Outside tap；Two kinds of situations alternately, slickness operation are implemented to borehole wall.
2. a kind of device for improving coal bed drilling hole wall slickness according to claim 1, it is characterised in that the gas
Flow switch includes reducing steel tube and normal footpath steel pipe, and normal footpath penstock installation is in the both sides of reducing steel tube, the internal diameter of reducing steel tube
More than the internal diameter of normal footpath steel pipe；Normal footpath steel pipe is identical with the internal diameter of breather pipe, and its two ends is connected with breather pipe respectively；Positioned at change
It is connected with the normal footpath steel pipe of footpath steel pipe both sides between the fixed support of difference, support in the middle part of spring, the spring and is connected with work
Plug, is defined by air current flow direction, venthole is set on the normal footpath steel pipe tube wall at reducing steel tube rear；The piston is going out
Moved back and forth in normal footpath steel pipe and reducing steel tube between stomata and reducing steel tube, realize that air-flow is entering rubber sleeve and entrance
Changed between the two kinds of situations that drill.
3. a kind of device for improving coal bed drilling hole wall slickness according to claim 2, it is characterised in that the support
Making material be stainless steel, the pyramidal structure being welded respectively by 3 stainless steel strips, the diameter of every stainless steel strip
2mm, long 6mm；The spring is common spring, spring overall thick 10mm, long 200mm, and the steel wire diameter for making spring is
1mm；The aperture of the venthole 5-3 is 1mm；The making material of the piston is latex, and in cylindrical, diameter 12mm is long
40mm；The external diameter 20mm of the reducing steel tube, internal diameter 16mm, long 100mm.
4. a kind of device for improving coal bed drilling hole wall slickness according to claim 1, it is characterised in that the rubber
Cover for cylinder, two-port is shunk, and by end face seal；The center of both ends of the surface is equipped with the through hole that can pass through breather pipe,
The outer rim of both ends of the surface radially sets gradually annular coupler and cylindric termination, the two ends parcel of the rubber sleeve from inside to outside
Termination outside and by clip fit sealing, wherein the distal end of a termination is provided with internal thread, be connected with drill rod thread.
5. a kind of device for improving coal bed drilling hole wall slickness according to claim 4, it is characterised in that the termination
It is divided into preposition termination and rearmounted termination, both are external diameter 50mm, internal diameter 46mm steel pipe, the preposition a length of 100mm in termination is rearmounted
The long 200mm in termination；The making material of clip is stainless steel, model KS-K.
6. a kind of device for improving coal bed drilling hole wall slickness according to claim 4, it is characterised in that the rubber
The making material of set is rubber, external diameter 70mm, internal diameter 64mm, long 800mm；The making material of steel sand is carborundum, particle diameter
0.1mm。
7. a kind of device for improving coal bed drilling hole wall slickness according to claim 1, it is characterised in that the ventilation
Pipe is by the steel pipe in rubber sleeve, the hollow connector that is arranged on the axial passage at drilling rod center and is connected with rig
It is formed by connecting by sealed bearings connector head and the tail, the high pressure gas leakage of input can be prevented.
8. a kind of device for improving coal bed drilling hole wall slickness according to claim 7, it is characterised in that the ventilation
The making material of the lengths of steel pipes of pipe is stainless steel, and external diameter 16mm, internal diameter 12mm, gas flow converter are classified as length difference
For two sections of 600mm and 700mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720250518.XU CN206562914U (en) | 2017-03-15 | 2017-03-15 | A kind of device for improving coal bed drilling hole wall slickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720250518.XU CN206562914U (en) | 2017-03-15 | 2017-03-15 | A kind of device for improving coal bed drilling hole wall slickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206562914U true CN206562914U (en) | 2017-10-17 |
Family
ID=60032222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720250518.XU Withdrawn - After Issue CN206562914U (en) | 2017-03-15 | 2017-03-15 | A kind of device for improving coal bed drilling hole wall slickness |
Country Status (1)
| Country | Link |
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| CN (1) | CN206562914U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869807A (en) * | 2017-03-15 | 2017-06-20 | 华北科技学院 | A kind of apparatus and method for improving coal bed drilling hole wall slickness |
| CN109025840A (en) * | 2018-08-03 | 2018-12-18 | 邹城兖矿泰德工贸有限公司 | Strong extension bar |
| CN110725661A (en) * | 2019-11-06 | 2020-01-24 | 河南理工大学 | Segmented spiral rubber bag hole sealing device |
-
2017
- 2017-03-15 CN CN201720250518.XU patent/CN206562914U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869807A (en) * | 2017-03-15 | 2017-06-20 | 华北科技学院 | A kind of apparatus and method for improving coal bed drilling hole wall slickness |
| CN109025840A (en) * | 2018-08-03 | 2018-12-18 | 邹城兖矿泰德工贸有限公司 | Strong extension bar |
| CN110725661A (en) * | 2019-11-06 | 2020-01-24 | 河南理工大学 | Segmented spiral rubber bag hole sealing device |
| CN110725661B (en) * | 2019-11-06 | 2021-12-17 | 河南理工大学 | Segmented spiral rubber bag hole sealing device |
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