CN202946057U - Collector with movable and static combination sealing structure - Google Patents
Collector with movable and static combination sealing structure Download PDFInfo
- Publication number
- CN202946057U CN202946057U CN 201220710338 CN201220710338U CN202946057U CN 202946057 U CN202946057 U CN 202946057U CN 201220710338 CN201220710338 CN 201220710338 CN 201220710338 U CN201220710338 U CN 201220710338U CN 202946057 U CN202946057 U CN 202946057U
- Authority
- CN
- China
- Prior art keywords
- collector
- sealing
- drilling rod
- ring
- wall
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a collector with a movable and static combination sealing structure. The collector is connected to the tail end of a hole protection pipe and is provided with a gas exhaust opening, a gas conveying port and an axial drilled hole corresponding to the hole protection pipe, and a drilling rod penetrates through the drilled hole. The collector is characterized in that a static sealing piece and a movable sealing piece are sequentially arranged at the drilled hole from inside to outside; a main body of the static sealing piece consists of a cylindrical helical ring; the outer circumferential wall of the helical ring is in interference fit with the inner wall of the drilled hole; brush hairs are fully arranged on the inner circumferential wall, which faces the drilling rod, of the helical ring along the radial direction to form a helical sealing surface; the heads of the brush hairs are in contact fit with the outer circumferential wall of the drilling rod to form initial sealing; the movable sealing piece consists of a plurality of sealing rings which have the same size and are arranged in parallel; each sealing ring is in dynamic clearance fit with the inner wall of the drilled hole and the outer circumferential wall of the drilling rod. The collector can be used for sealing a telescopic rod which can rotate in any axial direction; and particularly, when being applied to coal mining, the collector can improve the drilling and mining efficiency of a coal layer, achieve relatively high safety protection, and guarantee the safety in drilling and mining of the coal layer.
Description
Technical field
The present invention relates to coal drilling collector, especially a kind of collector that is provided with sound attitude combination seal structure.
Background technology
Adopting hydraulic mining for thin soft seam is a kind of economical and practical and safe and reliable digging means, but after hydraulic fracturing, a large amount of coals, water, gas will concentrate its follow-up coal of gushing out, water, gas to separate by holing, conclusion is transported and safety guarantee becomes needs to be resolved hurrily.The present domestic specific aim device that there is no related fields, especially at the drilling rod seal aspect, this runs into technical bottleneck with regard to the hydraulic mining that makes the thin soft seam in colliery.Boring about collector in existing apparatus is connected hermetically-sealed construction hard sealing, soft seal or the synchronous rotary Sealing Technologies of adopting more with drilling rod, above three kinds of sealing means all exist familiar lacunas, can cause drilling rod and seal friction strongly to make the easy loss of seal as hard sealing, gas and dust in use occur and leak; Soft seal reliability when running into high pressure conditions is relatively poor; The synchronous rotary Sealing Technology may produce high heat or the production of spark serious threat downhole safety in synchronous rotary.
Summary of the invention
The present invention provides a kind of collector that is provided with sound attitude combination seal structure for fear of the weak point that prior art exists, and this collector can provide stronger safeguard protection, guarantees that the safety of coal seam drilling is carried out.
The technical scheme that technical solution problem of the present invention adopts is:
A kind of collector that is provided with sound attitude combination seal structure, described collector is connected to the tail end of guard aperture pipe, collector is provided with the gas exhaust mouth, coal, gas delivery port and the boring that supplies drilling rod to pass that axially arranges corresponding to the guard aperture pipe, its design feature is, described drill hole is provided with static seal and dynamic sealing from inside to outside successively; The main body of described static seal is made of a cylindrical screw ring, the periphery wall of described helical ring and drill hole inner wall interference fit, helical ring radially is covered with bristle and forms helixseal face towards the internal perisporium of drilling rod, the periphery wall contact of the head of described bristle and drilling rod is fitted, and forms just sealing; Described dynamic sealing is comprised of the identical joint ring of arranging side by side of a plurality of sizes, each joint ring and drill hole inner wall, drilling rod periphery wall gap dynamic fit.
The number of rings of described static seal helical ring is at least two rings; The thickness of each joint ring of described dynamic sealing is 2.5-4 mm, and the quantity of joint ring is 12-15.
Described static seal helical ring is metal material, and described bristle adopts nylon 66 materials that add fire retardant; The joint ring of described dynamic sealing adopts PPESK alloy modification nylon.
Also be provided with copper sheathing between described boring and sound attitude hermetically-sealed construction, described copper sheathing is with the drill hole inner wall interference fit or be threaded, described copper sheathing and static seal interference fit, described copper sheathing and dynamic sealing gap dynamic fit.
Compared with the prior art, beneficial effect of the present invention is embodied in:
adopt sound attitude hermetically-sealed construction between the boring of collector of the present invention and drilling rod, wherein static seal is soft brush seal circle, seal with the drilling rod contact by the fire-retardant nylon bristle, can play sealing function under normal pressure, owing to adopting the soft material sealing to reduce with the friction of drilling rod and facilitated the installation of drill bit and the normal stretching motion of drilling rod, dynamic sealing is a plurality of the high abrasion joint rings of arranging side by side that size is identical, its internal diameter is greater than drill pipe diameter, external diameter is less than bore diameter, each dynamic sealing rotatablely moves around drilling rod just as Ho La hoop when drilling rod works, a plurality of dynamic seal (packing) rings and drilling rod, boring forms unordered Multi-point sealing, this kind sealing means can reduce the frictional dissipation of each sealing ring, dynamic sealing can be realized high quality seal and can not affect drilling rod work in sealer rear portion accumulation at once when extreme cases such as " spray orifices " occurring, be association of activity and inertia with this, the sealing means of soft or hard combination can reach material saving and can deal with the sealing function of various extreme conditions.
Description of drawings
Fig. 1 is structural representation in collector of the present invention.
Fig. 2 is static seal structural representation of the present invention.
Number in the figure: 1 guard aperture pipe; 2 gas exhaust mouths; 3 static seals; 31 helical rings; 32 bristles; 4 dynamic sealings; 5 drilling rods; 6 coal water delivery ports; 7 flanges.
Below pass through the specific embodiment, by reference to the accompanying drawings, the specific embodiment that the invention will be further described.
The specific embodiment
As shown in Figure 1, collector is connected to the tail end of guard aperture pipe 1, and collector is provided with gas exhaust mouth 2, coal, gas delivery port 6 and the boring that axially arranges corresponding to the guard aperture pipe, and drill hole is provided with static seal 3 and dynamic sealing 4 from inside to outside successively.
As shown in Figure 2, the main body of static seal 3 is made of a cylindrical screw ring 31, the internal perisporium of helical ring radially is covered with bristle 32, and the sealing surface of the spiral that forms, bristle lengths all equates and is shorter than 1/2nd internal diameters (specifically directly determining according to the required drilling rod that passes) of cylindrical screw ring; The periphery wall of the head of bristle and drilling rod 5 is fitted, and forms just sealing.
During concrete enforcement, the static seal helical ring adopts metal material (as materials such as steel, iron, copper), bristle adopts nylon 66 materials add fire retardant, and the number of rings of static seal helical ring is at least two rings (spiral 360 ° be a ring), and the axial minimum length of helical ring is 40-50mm; The joint ring of dynamic sealing adopts PPESK alloy modification nylon (commercially available prod), and the thickness of each joint ring of dynamic sealing is 2.5-4 mm, and the quantity of joint ring is 12-15.
In order to improve airtight quality, increase the service life, also be provided with copper sheathing between boring and sound attitude hermetically-sealed construction, copper sheathing is with the drill hole inner wall interference fit or be threaded, copper sheathing and static seal interference fit, copper sheathing and dynamic sealing gap dynamic fit.
Below by a concrete embodiment that uses, technical solution of the present invention is described further.
At first package unit is pressed guard aperture pipe, collector and 7 connections of sound attitude seal use flange, then drilling rod and drill bit is passed from its centre; Again the guard aperture pipe is fixed on the jewel hole place, simultaneously gas exhaust pipe and coal water carrier pipe is connected to gas exhaust mouth and coal water delivery port; Start at last rig work.In work, the coal of drilling rod drilling, water, gas carry out initial gross separation in collection, in the collector drill hole, drilling rod seals by static seal and dynamic sealing successively, at drilling rod in the drilling rotary course, static seal forms contact by nylon brush hair and drilling rod periphery wall and fits, be that under the condition of lower negative pressure, static seal is kept the sealing of normality when collector.Dynamic seal (packing), automatic emergency sealing when being adapted to " spray orifice " generation.In case malleation or high pressure conditions appear suddenly in collector tank, 10-15 the dynamic seal (packing) sheet that " Ho La hoop " formula of dynamic flat seal group is arranged, automatically stack to the tapping of boring outer end sealing flange 7, is realized emergency sealing immediately, and does not affect and creep into operation.When the hole keeper cavity forwards atmospheric pressure state to, dynamically the flat seal group is recovered " free waiting state " automatically.The liberty state is the unordered and then drilling rod rotation of finger tip diaphragm seal, and the position of each end diaphragm seal, state are random unordered.
Claims (4)
1. collector that is provided with sound attitude combination seal structure, described collector is connected to the tail end of guard aperture pipe, collector is provided with the gas exhaust mouth, coal, gas delivery port and the boring that supplies drilling rod to pass that axially arranges corresponding to the guard aperture pipe, it is characterized in that, described drill hole is provided with static seal and dynamic sealing from inside to outside successively; The main body of described static seal is made of a cylindrical screw ring, the periphery wall of described helical ring and drill hole inner wall interference fit, helical ring radially is covered with bristle and forms helixseal face towards the internal perisporium of drilling rod, the periphery wall contact of the head of described bristle and drilling rod is fitted, and forms just sealing; Described dynamic sealing is comprised of the identical joint ring of arranging side by side of a plurality of sizes, each joint ring and drill hole inner wall, drilling rod periphery wall gap dynamic fit.
2. a kind of collector that is provided with sound attitude combination seal structure according to claim 1, is characterized in that, the number of rings of described static seal helical ring is at least two rings; The thickness of each joint ring of described dynamic sealing is 2.5-4 mm, and the quantity of joint ring is 12-15.
3. a kind of collector that is provided with sound attitude combination seal structure according to claim 1 and 2, is characterized in that, described static seal helical ring is metal material, and described bristle adopts nylon 66 materials that add fire retardant; The joint ring of described dynamic sealing adopts PPESK alloy modification nylon.
4. a kind of collector that is provided with sound attitude combination seal structure according to claim 1, it is characterized in that, also be provided with copper sheathing between described boring and sound attitude hermetically-sealed construction, described copper sheathing is with the drill hole inner wall interference fit or be threaded, described copper sheathing and static seal interference fit, described copper sheathing and dynamic sealing gap dynamic fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220710338 CN202946057U (en) | 2012-12-20 | 2012-12-20 | Collector with movable and static combination sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220710338 CN202946057U (en) | 2012-12-20 | 2012-12-20 | Collector with movable and static combination sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946057U true CN202946057U (en) | 2013-05-22 |
Family
ID=48421764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220710338 Withdrawn - After Issue CN202946057U (en) | 2012-12-20 | 2012-12-20 | Collector with movable and static combination sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946057U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996088A (en) * | 2012-12-20 | 2013-03-27 | 淮北科奥工程建设有限公司 | Collector provided with dynamic and static combination sealing structure |
| CN110656900A (en) * | 2019-09-29 | 2020-01-07 | 中煤科工集团重庆研究院有限公司 | Non-contact sealing structure and non-contact drilling dust extraction cover |
| CN111140257A (en) * | 2020-01-10 | 2020-05-12 | 中国水利水电第四工程局有限公司 | Advanced support method and equipment |
-
2012
- 2012-12-20 CN CN 201220710338 patent/CN202946057U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996088A (en) * | 2012-12-20 | 2013-03-27 | 淮北科奥工程建设有限公司 | Collector provided with dynamic and static combination sealing structure |
| CN110656900A (en) * | 2019-09-29 | 2020-01-07 | 中煤科工集团重庆研究院有限公司 | Non-contact sealing structure and non-contact drilling dust extraction cover |
| CN110656900B (en) * | 2019-09-29 | 2020-12-01 | 中煤科工集团重庆研究院有限公司 | Non-contact drilling dust extraction cover |
| CN111140257A (en) * | 2020-01-10 | 2020-05-12 | 中国水利水电第四工程局有限公司 | Advanced support method and equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103556944A (en) | Double-layer internal deslagging and anti-blocking drilling tool for soft and outburst coal seam drilling, and use method of drilling tool | |
| CN202946057U (en) | Collector with movable and static combination sealing structure | |
| CN205805494U (en) | A kind of coal seam flooding hole sealing device | |
| CN102996088B (en) | A kind of collector being provided with sound state combination seal structure | |
| CN105064946B (en) | Hole packer and its boring and coring process | |
| CN203716841U (en) | Double-layer internal slag discharging and plugging prevention drilling tool for soft outburst coal seam drilling | |
| CN202971914U (en) | Dynamic and static combined sealing structure | |
| CN201635666U (en) | High-pressure water sealing drill pipe | |
| CN202990932U (en) | Static sealing element | |
| CN202788637U (en) | Drill pipe water supplying device | |
| CN204252872U (en) | A kind of coal mine gallery drilling rig gyrator chuck | |
| CN203271601U (en) | Coring drill rod with interlayer and drilling tool thereof | |
| CN203097803U (en) | High sulfur resistant high pressure metal sealing casing pipe head | |
| CN203321348U (en) | Watertight drill pipe | |
| CN201334868Y (en) | Side water injection mechanism for hydraulic rock drill | |
| CN204419075U (en) | Piston hydraulic chuck | |
| CN204327046U (en) | A kind of bypass pipe sealing device | |
| CN204266959U (en) | A kind of dustproof drill lever apparatus | |
| CN203335016U (en) | Pressure bearing type grouting hole packer with pulp returning prevention device | |
| CN204040927U (en) | Water filling deslagging gas drainage drill stem | |
| CN205330588U (en) | Sealed expansion pipe cluster assembly of long distance for oil drilling | |
| CN203321350U (en) | Snake bone drill pipe for drilling | |
| CN203214875U (en) | Strong sealing device for hydraulic chucks of gas drainage drilling rigs | |
| CN204252836U (en) | Liquid injecting type down-the-hold drill bit | |
| CN210087376U (en) | Gas extraction equipment for coal mine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |