CN104863626B - pressure relief device - Google Patents
pressure relief device Download PDFInfo
- Publication number
- CN104863626B CN104863626B CN201510169931.9A CN201510169931A CN104863626B CN 104863626 B CN104863626 B CN 104863626B CN 201510169931 A CN201510169931 A CN 201510169931A CN 104863626 B CN104863626 B CN 104863626B
- Authority
- CN
- China
- Prior art keywords
- spring
- loose collar
- catcher
- hole
- axis rod
- 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.)
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- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims description 4
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 31
- 239000003245 coal Substances 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229920001875 Ebonite Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
- Earth Drilling (AREA)
Abstract
A kind of pressure relief device, catcher including hollow tube-shape, the inside group of the catcher is provided with pressure release component, the pressure release component includes at least retainer ring, loose collar, axis rod and compression plate, the retainer ring is engaged to the inner peripheral surface of catcher, the retainer ring is fixed in one end of the axis rod, the sheathed spring of the other end and compression plate are simultaneously carried out by a fixing nut radially spacing, the loose collar is slidably sheathed on axis rod and spring outer rim, the upper end of the axis rod is additionally provided with spring stopper, and many support bars, it is connected between the spring stopper and loose collar；Thus, when the present invention creeps into, compression plate stress and compression spring simultaneously drive loose collar to move down and close relief hole, drilling is smoothly realized in the case of ensureing drilling rod inner high voltage air not side leakage, and spring reset promotes shifting on loose collar when in the hole occurs coal and gas prominent accident, relief hole is opened to extract the gas in annular clearance out.
Description
Technical field
The present invention relates to the technical field of drilling in coal, more particularly to a kind of pressure release suitable for soft projecting coal bed drilling
Device.
Background technology
Gas control and the basic demand that monitoring is guarantee coal mine downhole safety production.It is effective that coal mine gas are administered
Method is this coal bed drilling gas pumping, i.e., mash gas pumping drilling of constructing in coal seam, using rich in drilled tunnel extraction coal seam
The gas of collection, reduces gas density, prevents, in mining process, coal and gas prominent accident occurs, reaches the mesh of safety in production
's.
As weak seam physical arrangement is loose, gas enrichment region random distribution, gas pumping of constructing in weak seam
During drilling, chance gas enrichment region can be often bored, in the hole gas burst accident occurs.When coal and gas prominent accident occurs, in the hole meeting
Moment gushes out a large amount of gas, carries a large amount of coal dusts, and while sprays aperture.The gas for spraying aperture surpasses can drill site gas density
Limit, causes methane monitoring instrument to report to the police, causes job site and its power-off of place tunnel.While a large amount of coal dusts for spraying, can bury
In the hole drill bit and drilling rod, cause underground drilling accident.
For preventing when this coal bed gas extraction of constructing drills, in the hole happens suddenly coal and gas prominent accident, and then causes watt
This transfinites, cause job site and the power-off of whole piece tunnel, each mineral bureau and Coal Industry Group be provided with rigidity (steel plate etc.) or
The port seal of flexible (air bag etc.).When in the hole occurs coal and gas prominent accident, port seal can be temporary transient
Annular clearance between closing drilling rod and hole wall, it is to avoid high concentration gas are sprayed from the hole, cause the power-off of whole piece tunnel.
Though the high concentration gas that in the hole can be sprayed by port seal temporarily block the annular space between drilling rod and hole wall
In gap, prevent the power-off caused because of gas exceeding limit, but drilling construction also stops therewith.Now, if want to exit drilling rod or
Continue drilling, all need port seal is unclamped, and then cause the high concentration gas of annular clearance to gush out, cause gas in tunnel
Transfinite.
For guaranteeing coal mine underground construction safety, before construction (exit drilling rod or continue drilling) is continued, first should process
By closure annular clearance gas.
If the coal and gas prominent accident scale that in the hole occurs is less, that is, the gas amount for spraying is little, the coal that gas is carried
Powder is also few, does not block annular clearance and bit port.Now negative pressure can be connected on drilling rod, lead to using in drilling rod
Hole, processes the high concentration gas of annular clearance by bit port.
If drilling accident is larger, annular clearance is blocked and is cut into several sections, and also or drill bit is buried, hydrophthalmia cannot be utilized.
The high concentration gas of annular clearance now cannot be processed using drilling rod inner via hole.
When creeping in weak seam, the size of in the hole coal and gas prominent accident scale cannot be evaluated in job site,
Cannot learn whether in the hole drilling rod and drill bit are buried (blocking up), need, a no matter accident matching used with port seal
Size, can process the device of annular clearance middle and high concentration gas.
For this purpose, the designer of the present invention is in view of drawbacks described above, by concentrating on studies and designing, comprehensively it is engaged in for many years for a long time
The experience and achievement of related industry, research and design goes out a kind of pressure relief device, to overcome drawbacks described above.
Content of the invention
It is an object of the invention to provide a kind of pressure relief device, its simple structure, easy to operate, repeatedly can utilize, can
The gas of effective extraction annular clearance, solves prior art in coal mine underground construction mash gas pumping drilling, coal and gas occurs
Prominent accident, the high methane concentration sprayed in the hole using port seal get lodged in the annular clearance between drilling rod and hole wall
Interior, it is impossible to continue the problem of construction (exit drilling rod or continue drilling).
For achieving the above object, the invention discloses a kind of pressure relief device, including the catcher of hollow tube-shape, the catcher
Inner peripheral surface is provided with multiple relief holes, and the inside group of the catcher is provided with pressure release component, it is characterised in that：
The pressure release component includes at least retainer ring, loose collar, axis rod and compression plate, and the retainer ring is engaged to
The inner peripheral surface of catcher, one end of the axis rod are fixed on the retainer ring, and the sheathed spring of the other end and compression plate simultaneously pass through
One fixing nut carries out radially spacing, and the loose collar is slidably sheathed on axis rod and spring outer rim, the axis rod
Upper end is additionally provided with the spring stopper between spring and compression plate；
And many support bars, it is connected between the spring stopper and loose collar.
Wherein：The spring stopper is evenly equipped with multiple supported holes, many ribs in ventilating spaces hole on the loose collar
It is respectively equipped with supported hole on bar, the two ends of each support bar are connected to the supported hole of the spring stopper and described
The supported hole of loose collar.
Wherein：The support bar hook part of one end and is arranged at the straight hook portion of the other end, the crotch comprising being arranged at
Portion's hook places the supported hole on loose collar located at the supported hole of spring stopper, the straight hook portion.
Wherein：The support bar is made up of high-carbon steel.
Wherein：The inner peripheral surface of the catcher is provided with installing zone, and the lower end of the installing zone has internal thread, the plurality of lets out
Pressure hole peripherally equi-spaced apart located at the top of the internal thread, the outer rim of the retainer ring is provided with and the catcher installing zone
The external screw thread of internal thread engagement.
By said structure, the pressure relief device of the present invention has the effect that：
1st, simple structure, easy to operate, cost is relatively low, can realize preferable decompression function, in maintenance and handling all
Very convenient；
When the 2nd, creeping into, pressure-air is entered from catcher box end, and compression plate receives force, and compression spring is simultaneously driven under loose collar
Moving, relief hole being closed, drilling is smoothly realized in the case of drilling rod inner high voltage air not side leakage is ensured.If in the hole occur coal with
Drill bit is blocked by gas burst accident, coal dust, and opening arrangement closes annular space, and after blowing-out, spring reset is promoted on loose collar and moved, will
Relief hole is opened, and can extract the gas in annular clearance out.
The detailed content of the present invention can be obtained by explanation described later and institute's accompanying drawing.
Description of the drawings
Fig. 1 shows the assembling schematic diagram of pressure relief device of the present invention.
Fig. 2 shows the internal structure schematic diagram of the present invention.
Fig. 3 shows present invention catcher generalized section.
Fig. 4 shows retainer ring schematic diagram of the present invention.
Fig. 5 shows axis rod schematic diagram of the present invention
Fig. 6 shows loose collar schematic diagram of the present invention.
Fig. 7 shows compression plate schematic diagram of the present invention.
Fig. 8 shows support bar schematic diagram of the present invention.
Reference：
Catcher 1, retainer ring 2, loose collar 3, spring 4, axis rod 5, compression plate 6, support bar 7, fixing nut 8.
Specific embodiment
Referring to Fig. 1 to Fig. 8, it is shown that the pressure relief device of the present invention.
Referring to Fig. 1, the pressure relief device includes the catcher 1 of hollow tube-shape, and referring to Fig. 3, the inner peripheral surface of the catcher 1 is provided with
Installing zone 9, the lower end of the installing zone have an internal thread 10, the top of the internal thread 10 peripherally equi-spaced apart be provided with multiple
Relief hole 11, the inside of the catcher 1 are provided with pressure release component.
Referring to Fig. 2, the pressure release component includes at least retainer ring 2, loose collar 3, axis rod 5 and compression plate 6, referring to Fig. 4,
The outer rim of the retainer ring 2 is provided with the external screw thread 14 engaged with the internal thread 10 of 1 installing zone 9 of the catcher, and retainer ring 2 is solid
Fixed to catcher 1, the center of the retainer ring 2 is provided with the screwed hole of centre 13 that places for the axis rod 5 and sets around center
The air vent 12 of the multiple equi-spaced apart arrangement that puts, referring to Fig. 5, the lower end of the axis rod 5 is provided with and is engaged in screwed hole of centre
13 the first external screw thread 15, and a spring 4, the spring 4 are sleeved on the outer rim of the axis rod 5, and its one end is resisted against solid
Determine ring 2, the other end is resisted against compression plate 6, referring to Fig. 7, the compression plate 6 is provided with the centre bore 23 run through for axis rod 5, and institute
The upper end for stating axis rod 5 is provided with the second external screw thread 16, so that a fixing nut 8 is engaged and avoids compression plate 6 in the elastic force of spring 4
Outwards come off under effect, referring to Fig. 6, the loose collar 3 is provided with the centre bore 21 and cincture placed for axis rod 5 and spring 4
The spaced multiple air vents 20 of centre bore 21, on the loose collar 3, the rib in ventilating spaces hole is provided with supported hole 22, institute
The external diameter for stating loose collar 3 is identical with the internal diameter of installing zone 9 can slide in which.
Thus, by said structure, the inside for taking over 1 arranges retainer ring 2, arranges axis rod 5, axis rod 5 in retainer ring 2
Outer sheathed spring 4, spring overcoat set loose collar 3, and 5 top of axis rod arranges compression plate 6.
Wherein, the upper end of the axis rod 5 is additionally provided with compression plate stopping means 17 and spring stopper 18, described pressurized
Plate stopping means 17 is arranged between fixing nut 8 and compression plate 6, and the spring stopper 18 is arranged at spring 4 and pressurized
Between plate 6.
Wherein, the compression plate 6 is made up of hard rubber, and by the hard rubber with a little elasticity, compression plate 6 can be preferably
Realize pressurized sealing function.
Referring to Fig. 5, the spring stopper 18 is evenly equipped with multiple supported holes 19, and many support bars 7, referring to Fig. 8,
Comprising being arranged at the hook part of one end and being arranged at the straight hook portion of the other end, the hook part hook is located at bullet to each support bar 7
The supported hole 19 of spring stopping means 18, the straight hook portion place the supported hole 22 on loose collar 3, so as to effectively achieve support
Setting of the bar 7 between spring stopper 18 and loose collar 3, optionally, the support bar 7 is made up of high-carbon steel, with tool
There are certain elasticity and rigidity.
When the present invention is assembled, loose collar 3 is set on axis rod 5 by centre bore 21, using the two ends of support bar 7
The supported hole 19 on supported hole 22 and axis rod spring stopper on connection loose collar 3, so as to limit the axle of loose collar 3
To movement.
Retainer ring 2 is installed using the external screw thread 14 of retainer ring 2 with the internal thread 10 of 1 installing zone 9 of catcher, will be sheathed for spring 4
Between the centre bore 21 of axis rod 5 and loose collar 3, then by the screw thread 15 of 5 lower end of axis rod and retainer ring screwed hole of centre
13 connections, are moved come axial limited spring using the spring stopper 18 on axis rod 5 and retainer ring 2.
By the centre bore 23 on compression plate 6, compression plate 6 is set on axis rod 5, in fixing nut 8 and axis rod 5
Screw thread 16 coordinate, compression plate 6 is fixed on compression plate stopping means 17.
At the scene during use, only the pressure relief device of the present invention need to be connected into drilling rod, accessing quantity can be according to construction ground
Layer judges.When being passed through pressure-air, pressure-air can be acted on compression plate 6, compression spring 4, promote loose collar 3 to moving down
Dynamic, and the relief hole 11 that blocks on catcher 1, it is ensured that pressure-air will not side leakage.Pressure-air in drilling rod then passes through retainer ring 2
Air vent 12 and loose collar 3 on 20 access aperture bottom of air vent, realize normal drilling.
When in the hole occurs coal and gas prominent accident, using port seal closed orifices, high concentration gas are sealed
Close in annular clearance.Stop pressure-air being passed through, the active force on compression plate 6 reduces, spring 4 resets, move on loose collar 3,
Spill the relief hole 11 on catcher 1.Now, no matter bit port is blocked, also or annular clearance is blocked and is cut into several sections, can
High concentration gas in annular clearance are extracted out by the relief hole 11 on drilling rod inner via hole and catcher 1.
It is readily apparent that above description and record are only to illustrate rather than in order to limit in disclosure of the invention
Hold, apply or use.Although describing in an embodiment and embodiment being described in the drawings, the present invention is not limited
By accompanying drawing example and be described as in an embodiment it is now recognized that optimal mode to implement the particular case of the teachings of the present invention
Son, the scope of the present invention will include to fall into any embodiment of description and appended claims above.
Claims (5)
1. a kind of pressure relief device, including the catcher of hollow tube-shape, the inner peripheral surface of the catcher is provided with multiple relief holes, the catcher
Inside be provided with pressure release component, it is characterised in that：
The pressure release component includes at least retainer ring, loose collar, axis rod and compression plate, and the retainer ring is engaged to catcher
Inner peripheral surface, one end of the axis rod is fixed on the retainer ring, and the sheathed spring of the other end and compression plate are simultaneously solid by one
Determining nut carries out radially spacing, and the loose collar is slidably sheathed on axis rod and spring outer rim, the upper end of the axis rod
The spring stopper being additionally provided between spring and compression plate；
The pressure release component also includes many support bars, is connected between the spring stopper and loose collar.
2. pressure relief device as claimed in claim 1, it is characterised in that：The spring stopper is evenly equipped with multiple supported holes,
Supported hole is respectively equipped with the loose collar on many rib in ventilating spaces hole, and the two ends of each support bar are connected to
The supported hole of the spring stopper and the supported hole of the loose collar.
3. pressure relief device as claimed in claim 2, it is characterised in that：The support bar comprising be arranged at one end hook part and
The straight hook portion of the other end is arranged at, the hook part hook places activity located at the supported hole of spring stopper, the straight hook portion
Supported hole on ring.
4. pressure relief device as claimed in claim 1, it is characterised in that：The support bar is made up of high-carbon steel.
5. pressure relief device as claimed in claim 1, it is characterised in that：The inner peripheral surface of the catcher is provided with installing zone, the peace
The lower end in dress area has internal thread, and peripherally equi-spaced apart is located at the top of the internal thread, described solid for the plurality of relief hole
The outer rim for determining ring is provided with the external screw thread engaged with the internal thread of the catcher installing zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169931.9A CN104863626B (en) | 2015-04-10 | 2015-04-10 | pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169931.9A CN104863626B (en) | 2015-04-10 | 2015-04-10 | pressure relief device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863626A CN104863626A (en) | 2015-08-26 |
| CN104863626B true CN104863626B (en) | 2017-03-08 |
Family
ID=53909749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510169931.9A Active CN104863626B (en) | 2015-04-10 | 2015-04-10 | pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104863626B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889752B (en) * | 2016-06-12 | 2017-12-29 | 河南理工大学 | A kind of adjustable accurate pressure releasing method of threshold value and device |
| CN114263449B (en) * | 2021-12-14 | 2022-09-16 | 中国矿业大学 | High-efficient gas drainage device based on hydraulic fracturing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR464376A (en) * | 1912-11-07 | 1914-03-19 | Josef Kempermann | Process to prevent firedamp accumulations in mines |
| DE3705236C2 (en) * | 1987-02-19 | 1997-06-19 | Mueller & Borggraefe Kg | Methane suction pipe for underground gas wells |
| CN201554490U (en) * | 2009-09-16 | 2010-08-18 | 李红恩 | Automatic pressure release warning device for coal mine gas drainage pipe |
| CN201771427U (en) * | 2010-08-11 | 2011-03-23 | 郑州煤炭工业(集团)有限责任公司 | Outburst elimination rotary-cutting drilling device for 'three soft' coal seams |
| CN201902237U (en) * | 2010-11-02 | 2011-07-20 | 刘汉刚 | Portable metal support |
| CN203050763U (en) * | 2013-01-30 | 2013-07-10 | 田建伟 | One-way control device for pre-buried gas release pipe |
-
2015
- 2015-04-10 CN CN201510169931.9A patent/CN104863626B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104863626A (en) | 2015-08-26 |
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