CN103321670B - Built-in drill stem temperature control automatic wind closing flame-retardant device - Google Patents
Built-in drill stem temperature control automatic wind closing flame-retardant device Download PDFInfo
- Publication number
- CN103321670B CN103321670B CN201310289241.8A CN201310289241A CN103321670B CN 103321670 B CN103321670 B CN 103321670B CN 201310289241 A CN201310289241 A CN 201310289241A CN 103321670 B CN103321670 B CN 103321670B
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- temperature control
- piston
- built
- closed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
A built-in drill stem temperature control automatic wind closing flame-retardant device comprises a section of a standard drill stem and a temperature control automatic wind closing assembly installed in an inner cavity of the standard drill stem. The temperature control automatic wind closing assembly comprises a cylinder body, a piston and a wind blocking sleeve, the piston is a combination body of a circular cylinder and a cone, the cylinder body is a cylinder body, one end of the cylinder body is closed and the other end of the cylinder body is opened, and the inner bore of the wind blocking sleeve is a cone frustum shape hole matched with the piston in shape and size. The cylinder body is fixed in the inner cavity of the standard drill stem through a linkage bar having good thermal conductance and high-temperature resistance, the closed end of the cylinder body faces towards the external thread end of the standard drill stem, and gas having no corrosiveness on metal materials and having thermal expansion performance is filled in the cylinder body. The piston is combined with the cylinder body, the circular cylinder section of the piston is installed in the cylinder body, and the cone section of the piston is located outside the cylinder body. The wind blocking sleeve is fixed in the inner cavity of the standard drill stem and located on one side of the opening end of the cylinder body, and the large end of the circular cone shape hole of the wind blocking sleeve faces to the opening end of the cylinder body.
Description
Technical field
The invention belongs to weak seam drilling technique field, particularly a kind of fire-retarding device used of holing in weak seam gas control process.
Background technology
Coal is a kind of important energy, but coal seam gas-bearing capacity is general higher, and in progress of coal mining, the fatal rate of gas accident remains high for a long time, along with the increase of coal mining depth, a large amount of superficial part low gaseous mine changes highly gassy mine into gradually, and highly gassy mine quantity increases year by year.
The measure of current gas control is more, but carries out gas pumping after finally all needing coal bed drilling, and in work progress, boring is key link.Drilling depth, bore diameter, drilling quality directly affect gas control effect.Special in weak seam, collapse hole is serious, and Completion of Drilling Hole efficiency is low, and water drilling can reduce hole quality further, and therefore air drill becomes the unique selection of weak seam boring.But in air drill process, drilling rod and rib high-speed friction, along with the increase of drilling depth, coal and rock temperature is corresponding increase also, and drilling rod temperature raises and is exceedingly fast.In addition, air drill process can be given in hole and uninterruptedly be sent into air, and in hole, oxygen is sufficient, and gas bearing capacity is large, when drilling rod temperature reaches coal burning-point, very easily causes coal burning, causes great mine safety disaster.Existing boring bar tool is made up of rig and drilling rod, effectively can not prevent the burning of coal in boring procedure mesopore, and thus a kind of automatic fire-retardant boring bar tool of exploitation has important function for mine safety.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of built-in drilling rod temperature control automatically to close wind fire-retarding device, to solve coal hole combustion problem in weak seam air drill process, improve the safety of gas control.
Wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically, automatically close wind assembly by a joint standard drill pipe and the temperature control be arranged in this joint standard drill pipe inner chamber to form, described temperature control is automatically closed wind assembly and is comprised cylinder body, piston and choke cover, piston is the assembly of cylinder and cone, cylinder body is that one end is closed, the cylinder of other end opening, its internal diameter matches with the cylinder external diameter of composition piston, the endoporus of choke cover be match with piston-shaped and size truncated cone hole (the circular cone body section of piston enter choke overlap endoporus can with its hole wall close contact, close the wind path of drilling rod Inner), described cylinder body is fixed on the inner chamber of described standard drill pipe by the linking bar with thermal conductive resin and heat-resisting quantity, its blind end is towards the male end of described standard drill pipe, cylinder is filled with metal material non-corrosiveness and the good gas of thermal expansivity, piston and cylinder body combine, its cylinder part section loads cylinder body, its circular cone body section is positioned at outside cylinder body, choke cover is fixed on the inner chamber of described standard drill pipe and is positioned at the side, openend of cylinder body, and the large end in its truncated cone hole is towards the openend of described cylinder body.
Wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically, when in its cylinder body, the charge of gas is with burning-point (500 ~ 600 DEG C) of the temperature of cylinder body close to coal, the gas in cylinder body is inflatable to be limited to the circular cone body section of piston being pushed choke cover endoporus and its hole wall close contact but not damaging cylinder body.The one to metal material non-corrosiveness and in the good preferred helium of gas of thermal expansivity, neon, nitrogen, carbon dioxide of filling in described cylinder body.
Wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically, the length of the cylinder part section of its piston is greater than the length of choke cover, can ensure that the circular cone body section of piston and choke overlap endoporus hole wall close contact, ventilation required in boring procedure can be met again.
Wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically, and its linking bar for stationary housing is three, and three linking bars distribute around outer wall of cylinder block, is 120o angle each other, ensure that the stability that cylinder body is installed.
Wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically, the linking bar that its linking bar preferably copper for stationary housing, copper alloy, aluminum or aluminum alloy make, they not only have good thermal conductivity and heat-resisting quantity, and source is wide, and price is relatively cheap.
The operating principle of wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically:
When in cylinder body, when gases are heated, they expand, promote piston to the direction motion of choke cover, when burning-point (500 ~ 600 DEG C) close to coal of the temperature of gas, the circular cone body section of piston is pushed choke cover endoporus and its hole wall close contact, close the wind path of drilling rod Inner, cut off the supply (see figure 3) of oxygen in hole; Until temperature in borehole cooling or after exiting drilling rod artificial hypothermia, along with the decline of gas temperature, under the effect of atmospheric pressure, gas volume in cylinder body shrinks, and piston is to the motion of cylinder body blind end, and the inner hole wall overlapped with choke is separated, open the wind path of drilling rod Inner, the supply of air in recovery hole.
The present invention has following beneficial effect:
1, the present invention is the new equipment that high prominent low-permeable weak seam gas control drilling technique provides a kind of safe drill, can expand because built-in drilling rod temperature control of the present invention closes the gas in wind fire-retarding device automatically along with the rising volume of temperature, thus promote piston closes drilling rod Inner wind path, cut off the supply of oxygen in hole, stop coal burning in hole, thus efficiently solve the potential risk in boring procedure, improve the safety of gas control.
The aerochemistry activity of 2, automatically closing in wind fire-retarding device due to built-in drilling rod temperature control of the present invention is stablized, and can not corrode other parts of drilling rod, thus use safety.
3, because the built-in drilling rod temperature control linking bar automatically closed in wind fire-retarding device of the present invention has thermal conductive resin and heat-resisting quantity, the outer variations in temperature of the temperature of cylinder body and drilling rod thus can be made synchronous, and at the burning-point of coal, there is enough intensity.
4, windage combustion drilling rod is closed in temperature control of the present invention is automatically pure frame for movement, does not relate to Circuits System, and the application of thus do not need to be correlated with " coal peace card ", is particularly suitable for the boring of high prominent low-permeable weak seam gas control process.
5, because three linking bars are 120o distribution, thus fixing highly stable in standard drill pipe inner chamber of cylinder body around outer wall of cylinder block.
6, built-in drilling rod temperature control of the present invention closes windage combustion apparatus structure simply automatically, and easy to use, all components make by common material, and thus cost is low, are easy to apply.
Accompanying drawing explanation
Fig. 1 is the outline drawing that wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically;
Fig. 2 is the structural representation that wind fire-retarding device is closed in built-in drilling rod temperature control of the present invention automatically, and this device is in the state that wind path is opened;
Fig. 3 is that the schematic diagram that wind fire-retarding device is in wind path closed state is closed in built-in drilling rod temperature control of the present invention automatically;
Fig. 4 is the A-A sectional view of Fig. 2;
Fig. 5 is the B-B sectional view of Fig. 2;
Fig. 6 is that wind fire-retarding device and drill bit and the combination schematic diagram at rear standard drill pipe are closed in built-in drilling rod temperature control of the present invention automatically.
In figure, 1-standard drill pipe, 2-external screw thread, 3-internal thread, 4-choke cover, 5-cylinder body, 6-piston, 7-gas, 8-linking bar, 9-drill bit.
Detailed description of the invention
By reference to the accompanying drawings the structure of wind fire-retarding device is closed automatically to built-in drilling rod temperature control of the present invention and application is described further below by embodiment.
Embodiment 1
Built-in drilling rod temperature control in the present embodiment automatically close wind fire-retarding device for height dash forward low-permeable weak seam gas control boring, mash gas pumping drilling is the hole that is inclined upwardly, and boring aperture is 94.00mm, boring hole depth 30.00m.
In the present embodiment, built-in drilling rod temperature control closes the structure of wind fire-retarding device as shown in Figure 1 and Figure 2 automatically, automatically closes wind assembly form by a joint standard drill pipe 1 and the temperature control be arranged in this joint standard drill pipe inner chamber.The length L1 of a described joint standard drill pipe is 1000.00 mm, and the outer diameter D 1 of standard drill pipe is 94.00mm, and wall thickness is 5.0mm, and its front end is provided with internal thread 3, and rear end is provided with external screw thread 2, and external screw thread 2 is 50.00mm with the length L2 of internal thread 3.Described temperature control is automatically closed wind assembly and is comprised cylinder body 5, piston 6 and choke cover 4; Piston 6 is the assembly of cylinder and cone, and both are monolithic construction, the cylinder of composition piston, and its external diameter is 50.00mm, length Q1 is 222mm, the cone of composition piston, and its length Q2 is 147.00mm, and cone angle beta is 17 °; Cylinder body 5 for one end close, the cylinder of other end opening, its outer diameter D 2 is 60.00mm, and wall thickness is 5.0mm, and length is 540.00 mm; The length L5 of choke cover 4 is 210.00mm, and its endoporus is truncated cone hole, and the diameter D3 of described truncated cone hole small end is 30.00mm, and the diameter of large end is identical with the diameter of standard drill pipe inner chamber.
Described cylinder body 5 is fixed on the inner chamber of standard drill pipe 1 by three flat copper linking bars 8, described linking bar 8 is three, article three, linking bar distributes around outer wall of cylinder block, be 120o angle (see figure 4) each other, their cross section is fan cylindricality, being 20.00mm with the width a of standard drill pipe inwall welding portion, is 16.00mm with the width b of outer wall of cylinder block welding portion; The blind end of cylinder body 5 is towards the male end of described standard drill pipe, and the spacing L3 between its blind end end face and external screw thread is 105.00mm.Be filled with helium 7 in cylinder body 5, the initial length P0 of helium in cylinder body is 310.00mm.Piston 6 and cylinder body combine, and its cylinder part section loads cylinder body, and its circular cone body section is positioned at outside cylinder body.Choke cover 4 is fixed by welding in the inner chamber of described standard drill pipe and is positioned at the side, openend of cylinder body, and the large end in its truncated cone hole is towards the openend of cylinder body, and the spacing L4 between the end face of its truncated cone hole small end and internal thread is 40.00mm.
In the present embodiment, cylinder body 5, piston 6 and choke cover 4 all uses 45
#steel is done.
Embodiment 2
In the present embodiment, built-in drilling rod temperature control is closed automatically wind fire-retarding device and be used for high prominent low-permeable weak seam gas control boring, mash gas pumping drilling is the hole that is inclined upwardly, and boring aperture is 94.00mm, boring hole depth 30.00m.Use built-in drilling rod temperature control described in embodiment 1 automatically to close wind fire-retarding device, operate as follows:
1. according to gas control design, to dash forward low-permeable weak seam determination bore position at height;
2. according to the dimensional orientation in hole, at bore position erection rig;
3. the internal thread 3 automatically being closed standard drill pipe one end of wind fire-retarding device by built-in drilling rod temperature control connects drill bit;
4. the external screw thread 2 automatically being closed standard drill pipe one end of wind fire-retarding device by built-in drilling rod temperature control connects posterior standard drill pipe 1, has assembled as shown in Figure 6;
5. hole, along with drilling rod stretches in hole, temperature constantly raises, and in cylinder body, the volume of helium 7 expands along with the rising of temperature; When burning-point (500 ~ 600 DEG C) of helium temperature close to coal, helium volume in described cylinder body is expanded to and the circular cone body section of piston is pushed choke overlaps 4 endoporus and its hole wall close contact, thus close the wind path of drilling rod Inner, cut off the supply of oxygen in hole, stop coal burning (see figure 3) in hole;
6. until temperature in borehole cooling or after exiting drilling rod artificial hypothermia, along with the decline of gas temperature, under the effect of atmospheric pressure, gas volume in cylinder body shrinks, piston is to the motion of cylinder body blind end, and the inner hole wall overlapped with choke is separated, and opens the wind path of drilling rod Inner, the supply of air in recovery hole, continues to advance drilling rod boring;
7. step is repeated 4. to 6., until complete design boring hole depth.
Claims (10)
1. wind fire-retarding device is closed in a built-in drilling rod temperature control automatically, it is characterized in that described device automatically closes wind assembly by joint standard drill pipe (1) and the temperature control be arranged in this joint standard drill pipe (1) inner chamber and forms, described temperature control is automatically closed wind assembly and is comprised cylinder body (5), piston (6) and choke cover (4), piston is the assembly of cylinder and cone, cylinder body (5) is for closing one end, the cylinder of other end opening, its internal diameter matches with the cylinder external diameter of composition piston, the endoporus of choke cover (4) is the truncated cone hole matched with piston-shaped and size,
Described cylinder body (5) is fixed on the inner chamber of described standard drill pipe (1) by the linking bar (8) with thermal conductive resin and heat-resisting quantity, its blind end is towards the male end of described standard drill pipe, be filled with in cylinder body (5) metal material non-corrosiveness and the good gas (7) of thermal expansivity, piston (6) and cylinder body combine, its cylinder part section loads cylinder body, its circular cone body section is positioned at outside cylinder body, choke cover (4) is fixed on the inner chamber of described standard drill pipe and is positioned at the side, openend of cylinder body, and the large end in its truncated cone hole is towards the openend of described cylinder body.
2. wind fire-retarding device is closed in built-in drilling rod temperature control automatically according to claim 1, when it is characterized in that the charge of cylinder body (5) interior gas with the burning-point of the temperature of cylinder body close to coal, the gas in cylinder body is inflatable to be limited to the circular cone body section of piston being pushed choke cover (4) endoporus and its hole wall close contact but not damaging cylinder body.
3. according to claim 1 or 2, wind fire-retarding device is closed in built-in drilling rod temperature control automatically, it is characterized in that described to metal material non-corrosiveness and the good gas (7) of thermal expansivity be helium, one in neon, nitrogen, carbon dioxide.
4. according to claim 1 or 2, wind fire-retarding device is closed in built-in drilling rod temperature control automatically, it is characterized in that the length of the cylinder part section of piston (6) is greater than the length of choke cover (4).
5. wind fire-retarding device is closed in built-in drilling rod temperature control automatically according to claim 3, it is characterized in that the length of the cylinder part section of piston (6) is greater than the length of choke cover (4).
6. according to claim 1 or 2, wind fire-retarding device is closed in built-in drilling rod temperature control automatically, and it is characterized in that described linking bar (8) is three, three linking bars distribute around outer wall of cylinder block, is 120o angle each other.
7. wind fire-retarding device is closed in built-in drilling rod temperature control automatically according to claim 5, and it is characterized in that described linking bar (8) is three, three linking bars distribute around outer wall of cylinder block, is 120o angle each other.
8. according to claim 1 or 2, wind fire-retarding device is closed in built-in drilling rod temperature control automatically, it is characterized in that the linking bar that described linking bar (8) is copper, copper alloy, aluminum or aluminum alloy make.
9. wind fire-retarding device is closed in built-in drilling rod temperature control automatically according to claim 3, it is characterized in that the linking bar that described linking bar (8) is copper, copper alloy, aluminum or aluminum alloy make.
10. wind fire-retarding device is closed in built-in drilling rod temperature control automatically according to claim 7, it is characterized in that the linking bar that described linking bar (8) is copper, copper alloy, aluminum or aluminum alloy make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289241.8A CN103321670B (en) | 2013-07-10 | 2013-07-10 | Built-in drill stem temperature control automatic wind closing flame-retardant device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289241.8A CN103321670B (en) | 2013-07-10 | 2013-07-10 | Built-in drill stem temperature control automatic wind closing flame-retardant device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321670A CN103321670A (en) | 2013-09-25 |
| CN103321670B true CN103321670B (en) | 2015-03-18 |
Family
ID=49190687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310289241.8A Active CN103321670B (en) | 2013-07-10 | 2013-07-10 | Built-in drill stem temperature control automatic wind closing flame-retardant device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103321670B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485998A (en) * | 2019-08-31 | 2019-11-22 | 山东益矿钻采科技有限公司 | A kind of safety protection technique controlled for High Temperature Disaster in drilling hole |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0110182A2 (en) * | 1982-11-26 | 1984-06-13 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| CN101131069A (en) * | 2006-08-25 | 2008-02-27 | 河南理工大学 | Hole-digging and temperature-reducing drilling tool for outburst coal seam and drilling method thereof |
| CN102635393A (en) * | 2012-05-09 | 2012-08-15 | 中国矿业大学 | Combined hole sealing method for gas extracting and drilling delaying self-expansion capsule-paste |
| CN102877789A (en) * | 2012-09-28 | 2013-01-16 | 西安美尼矿山设备科技有限公司 | Drilling and cutting integrated drilling bit |
| CN203335122U (en) * | 2013-07-10 | 2013-12-11 | 四川大学 | Internally-arranged drill rod temperature-control automatic air closing inflaming-retarding device |
-
2013
- 2013-07-10 CN CN201310289241.8A patent/CN103321670B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0110182A2 (en) * | 1982-11-26 | 1984-06-13 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| CN101131069A (en) * | 2006-08-25 | 2008-02-27 | 河南理工大学 | Hole-digging and temperature-reducing drilling tool for outburst coal seam and drilling method thereof |
| CN102635393A (en) * | 2012-05-09 | 2012-08-15 | 中国矿业大学 | Combined hole sealing method for gas extracting and drilling delaying self-expansion capsule-paste |
| CN102877789A (en) * | 2012-09-28 | 2013-01-16 | 西安美尼矿山设备科技有限公司 | Drilling and cutting integrated drilling bit |
| CN203335122U (en) * | 2013-07-10 | 2013-12-11 | 四川大学 | Internally-arranged drill rod temperature-control automatic air closing inflaming-retarding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103321670A (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203685187U (en) | Oriented CO2 air cannon device | |
| CN204461229U (en) | The low power safety blasting unit in colliery | |
| CN103033102B (en) | Carbon dioxide mining device | |
| CN207585444U (en) | Carbon dioxide fracturing device | |
| CN107476807A (en) | A kind of coal seam tight roof fracturing method for weakening | |
| CN103510979B (en) | Dry ice explosion and air-permeability-enhancing device and method for drawing out gas by using same | |
| CN104061013A (en) | Method and device for improving permeability of low-permeability coal bed by utilizing freezing process | |
| CN103195471A (en) | Method for preventing drilling collapse of downhole coal bed | |
| CN203083463U (en) | Carbon dioxide exploitation device | |
| CN103321670B (en) | Built-in drill stem temperature control automatic wind closing flame-retardant device | |
| CN208619156U (en) | Mine gas drilling is grouped extraction pipe-line system | |
| CN105783617A (en) | Activator and carbon dioxide fracturing device utilizing activator | |
| CN203335122U (en) | Internally-arranged drill rod temperature-control automatic air closing inflaming-retarding device | |
| CN206830175U (en) | A kind of carbon dioxide crushes the device of top coal Sub-Level Caving | |
| CN104764625A (en) | Low-temperature coal seam sampling device and method | |
| CN206957582U (en) | Become track drilling apparatus | |
| CN201627535U (en) | Secondary reaming drainage bit | |
| CN106351659B (en) | A kind of carbon dioxide fracturing device | |
| CN104790920A (en) | Combustible ice extraction tubular column | |
| CN108119064A (en) | A kind of fast cooling punch device | |
| CN104632106A (en) | Guide device for coal bed gas phase fracturing device | |
| CN206670469U (en) | A kind of novel explosion pipe | |
| CN204495593U (en) | A kind of coal seam low temperature sampler | |
| CN109882153B (en) | Monitoring equipment for exploitation of coal bed gas | |
| CN203561297U (en) | Blasting retaining device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |