CN202023529U - Friction type multifunctional hole packer for drawing out methane or injecting water - Google Patents
Friction type multifunctional hole packer for drawing out methane or injecting water Download PDFInfo
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- CN202023529U CN202023529U CN2011200861178U CN201120086117U CN202023529U CN 202023529 U CN202023529 U CN 202023529U CN 2011200861178 U CN2011200861178 U CN 2011200861178U CN 201120086117 U CN201120086117 U CN 201120086117U CN 202023529 U CN202023529 U CN 202023529U
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- hole packer
- housing
- rod body
- hollow rod
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Abstract
The utility model discloses a friction type multifunctional hole packer for drawing out methane or injecting water. One end of a nut with an internal thread of the hole packer is connected with one end of a liquid injection pipe, and the other end of the nut is connected with one end of a hollow rod body with an external thread through a gasket; the other end of the hollow rod body is connected with a tapered expansion shell; a sleeve is sleeved on the excircle of the hollow rod body; a liquid injection and air suction pipe is arranged between the hollow rod body and the sleeve sleeved on the excircle; the tapered expansion shell is provided with an annular groove and an expansion groove between which an expansion piece is connected; a wedged body is inserted in a bell mouth at the right end of the tapered expansion shell; an elastic sleeve is sleeved on the external diameter of the tapered expansion shell; and the liquid injection pipe is connected with a valve and a pressure gauge. The friction type multifunctional hole packer is simple in structure, convenient to assemble, low in cost and multifunctional, is used for packing holes through injecting water, grouting and drawing out methane, and can be widely used for industries such as coal mine, underground engineering and the like; and in addition, core parts of the hole packer comprise the expansion shell and a wedged head, no blocking phenomenon happens during grouting, and more than two hole packers can be installed at different positions.
Description
Technical field
The utility model relates to the utensil of a kind of shutoff boring, is specifically related to be used to draw out methane or the multi-functional hole packer of friction-type that water filling is used.
Background technology
In recent years, along with Coal Production occupies more and more heavier status in the national strategy development, safety problem in the mining process of colliery and efficiency become the problem of the overriding concern of national security supervision department and colliery management unit, and formed the gas control policy of " take out afterwards earlier adopt, with wind fixed output quota, monitoring " gradually.Dust that produces in the mining process of colliery and gas form great harm to coal miner and colliery digging.Use hole packer to driving face water filling under the coal mine or draw out methane, can effectively increase the moisture in coal body water filling zone, reduce dust generation in the tunneling process, improve workman's condition of labor, impel coal body lax indirectly, improve coal mining efficient, effectively discharge gas simultaneously, guarantee Safety of Coal Mine Production.
Present stage, the sealing of hole principle of pressing hole packer can be divided into hydraulic type hole packer, vapour-pressure type hole packer, push-expanding type hole packer, plug-in type hole packer, suction-type hole packer etc.; By the purposes of hole packer can be divided into water filling with hole packer, grouting hole packer, draw out methane with hole packer, draw out methane and water filling with hole packer etc.
1) water filling hole packer: this type hole packer is mainly hydraulic type, vapour-pressure type, form by rubber hose, sequence valve and snap joint etc., what use according to expander is the rubber tube that nylon cord twines or the steel wire enhancement layer twines, and can select static pressure or high pressure water injection.Defectives such as the back external diameter that is characterized in expanding is big, and it is big to be suitable for pore diameter range, exists processing length big, and antistatic property is low.
Defectives such as 2) grouting hole packer: this type hole packer is mainly hydraulic type, and the back external diameter that is characterized in expanding is big, and it is big to be suitable for pore diameter range, exists processing length big, and it is little to bear burst pressure, and the recycling number of times is limited.
3) draw out methane and use hole packer: this type hole packer is mainly hydraulic type, push-expanding type or plug-in type, and its suitable pore diameter range is less, and it is little to bear burst pressure, and antistatic property requires higher relatively.
4) draw out methane and the water filling hole packer: this type hole packer is mainly hydraulic type, push-expanding type, is characterized in that inflatable external diameter scope is less, has that to bear burst pressure big, and processing length is big, and antistatic property requires more high relatively defective.
In the actual production, because current do not have special standard as hole packer design, production, check reference, each Xingqi thing of manufacturer, cause irregular the differing of quality of hole packer, as use when there is the water filling termination of pumping in the automatic hole packer of more hydraulic expansion type can occur leaking between hole packer and the drill hole wall, the water filling hole packer that finishes after the termination of pumping goes out from boring, the sealing of hole effect is not very desirable, and defective such as the market price is higher.
Summary of the invention
Goal of the invention of the present utility model provides a kind of simple in structure, easy to install, adopt the mechanical swelling principle of the shell-type that expands, one makes it easier to be fastening, two because its structure has the characteristics of " more press tighter ", make the sealing of hole better effects if be used to draw out methane or the multi-functional hole packer of friction-type that water filling is used.
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: a kind ofly be used to draw out methane or the special character of the multi-functional hole packer of friction-type that water filling is used is that spanner nut one end that one of this hole packer has an internal thread is connected with liquid injection pipe one end, the spanner nut other end by pad with have externally threaded hollow rod body one end and be connected, the described hollow rod body other end is connected with the sphenoid right-hand member that penetrates into the bloated housing of taper, be inserted in sleeve on the described hollow rod body external diameter, have cannelure and bloated groove on the bloated housing of taper, be connected expansion piece between described bloated groove and the bloated groove, insert sphenoid on the bloated housing right-hand member horn mouth of described taper, be inserted on the external diameter of the bloated housing of described taper and be connected with resilient sleeve, described liquid injection pipe is connected with valve and pressure meter.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the sphenoid structural representation of Fig. 1;
Fig. 3 is the bloated shell structure schematic diagram of Fig. 1;
Fig. 4 is the displacement of Fig. 1 and the graph of relation of exerting pressure.
The specific embodiment
Accompanying drawing is embodiment of the present utility model.
Below in conjunction with accompanying drawing summary of the invention is described further:
With reference to shown in Figure 1, be used to draw out methane or spanner nut 3 one ends that have internal thread of this hole packer of the multi-functional hole packer of friction-type that water filling is used are connected with liquid injection pipe 1 one ends, spanner nut 3 other ends by pad 4 with have externally threaded hollow rod body 6 one ends and be connected, described hollow rod body 6 other ends are connected with sphenoid 13 right-hand members that penetrate into the bloated housing 8 of taper, be inserted in sleeve 5 on described hollow rod body 6 external diameters, have cannelure 9 and bloated groove 12 on the bloated housing 8 of taper, be connected expansion piece 10 between described bloated groove and the bloated groove, insert sphenoid 13 on the bloated housing 8 right-hand member horn mouths of described taper, be inserted on the external diameter of the bloated housing 8 of described taper and be connected with resilient sleeve 11, described liquid injection pipe 1 is connected with valve 2 and pressure meter.
Described liquid injection pipe 1, hollow rod body 6, the bloated housing 8 of taper, sphenoid 13 inner chambers are equipped with admission pipe 7.
Described resilient sleeve is a rubber tube.
Described sphenoid axial length is L=60mm～85mm, and interior caliber is that d is 18mm～25mm, and the angle of wedge is α=5o～8o.
The axial length of described bloated housing is L=13mm～17mm, d=2mm～5mm.
Fig. 2, Figure 3 shows that sphenoid, the shell structure schematic diagram expands.
(1) sphenoid
Sphenoid is of a size of in the existing hole packer: axial length is L=75mm, and interior caliber is d=20mm, and the angle of wedge is α=5 °, as shown in Figure 2.
(2) bloated housing
The axial length of bloated housing is L=15mm, d=2mm, and shell structure schematic diagram such as Fig. 3 expand.
(3) sleeve and fluid injection admission pipe
The axial length L of sleeve and fluid injection admission pipe is decided with actual demands of engineering, the outside diameter d=20mm of fluid injection admission pipe, and the internal diameter of sleeve should be bigger slightly than the external diameter of fluid injection admission pipe, but should be littler than the external diameter of bloated housing tapering point.
(4) rubber case
When single-stage connected, original (not deforming) length of rubber case was 120mm, and thickness is 3mm, and internal diameter is 28mm, and resilient sleeve can increase frictional force, and shutoff is more closely knit, and it is more firm to contact.
Figure 4 shows that displacement and the graph of relation of exerting pressure, vertical base is designated as force value, and horizontal coordinate is a displacement, and when pressure constantly increased to Pm=15.7Mpa, bullet relative expanding housing was to the direction motion 25mm that exerts pressure.
Tapped sphenoid inserts on the horn mouth that is connected housing one end that expands, the horn mouth of bloated housing tapering point and another bloated shell flexibly connects, on the cylindrical shell of housing that expands, have expand groove and cannelure, two ends band external screw thread hollow rod body passes the bloated housing inner chamber of at least two joints, overcoat one steel pipe sleeve, sleeve diameter is less than bloated housing tapering point diameter and nut diameter, one end is rotatably coupled on the tapped sphenoid, the other end is connected with nut, the steel pipe length sleeve is to expand the shell tapering point to hollow rod body other end screw thread place, hollow rod body, sleeve and bloated housing, nut is rigidly connected.At the rubber tube of housing and one section tension of sphenoid overcoat that expands.
After hole packer installs, turn nut, the pulling anchor rod body, make sphenoid and bloated housing produce relative displacement, the housing that expands is expanded, rubber tube on the bloated housing closely contacts with hole wall, and the hole inwall produces great pressure, and the frictional force that produces between huge pressure rubber tube and hole wall is enough to resist the hole internal pressure.Huge pressure makes rubber tube closely be connected with boring, plays good leakproof effect.The hole internal pressure promotes the sphenocephaly outward movment simultaneously, make between itself and the bloated housing relative displacement increasing, drill hole wall pressure is constantly increased, frictional force between hole wall and rubber tube is bigger, the hole wall inner pore shrinks, prevent its seepage, the while rubber tube is connected tightr with hole wall, reach better sealing of hole effect.
Embodiment 1
Fluid injection admission pipe tension
When hole packer is installed, turn screw, tension fluid injection admission pipe expands the housing that expands, and therefore will carry out the tension experiment to it.Through experimental determination, when reaching the seal request that draws out methane, the tightening force size is less than the tensile strength of steel pipe and fluid injection admission pipe.Therefore, the fluid injection admission pipe satisfies initial pretightning force requirement in actual applications.
Water sealing effect
The hard coal body of laboratory simulation, carry out the water sealing effect test, hole packer termination setting pressure table is measured water injection pressure. after hole packer installs, open Water filling valve, regulate water injection pressure, the sealing of hole of monitoring hole packer is when water injection pressure reaches 15.7Mpa, the situation of leaking do not occur in lasting 10 minutes, sealing of hole is respond well.The automatic hole packer of hydraulic expansion type did not occur leaking or sliding condition, and illustrated that this hole packer can satisfy coal seam mesohigh waterflooding requirement when water injection pressure reaches 15Mpa in lasting 20 minutes.
Load performance
In the laboratory, with the boring of a steel pipe (L=30mm D=5mm) simulation rib, hole packer is inserted 25mm from steel pipe one end bullet relative expanding housing is outwards moved, the housing that expands is expanded closely contact with hole wall, reach the sealing of hole effect.From the other end to the bullet simulation hydraulic pressure of exerting pressure.When pressure constantly increases, bullet relative expanding housing is to the direction motion of exerting pressure, and the housing swell increment that expands continues to increase, and the displacement of bullet and the relation of exerting pressure are as shown in Figure 4, when increasing to Pm=15.7Mpa when exerting pressure, this hole packer can meet the demands.
The utility model is compared with existing skill, has following characteristics:
(1), simple structure, this hole packer core component is made up of bloated housing and sphenocephaly, simple in structure, part is few, and is easy to assembly.
(2), sealing quality is reliable, adopted the form of two-stage or multistage bloated housing series connection, the anterior housing that expands is equivalent to the expand sphenocephaly of housing of rear portion, the rear portion housing that expands provides thrust, more effective the stable of structure that guaranteed to the front portion housing that expands simultaneously.
(3), with low cost, this hole packer is formed by cheap material manufacturing, compares with existing hole packer, cost reduces greatly.It is recyclable that sleeve and fluid injection admission pipe use up the back, repeatedly utilizes.This also is the great advantage of this hole packer.
(4), multipurpose, not only can be used for the water filling sealing of hole, also can be used for slip casting and gas drainage under suction sealing of hole, existing water filling hole packer is difficult to finish viscosity bigger slurry injection and gas drainage under suction, this hole packer fluid injection admission pipe is identical with the sphenoid aperture, the hole inner structure is simple, can blockage phenomenon during slip casting, and cleaning is also convenient.In addition, in tensile stress hour, this hole packer can be used as simple and easy anchor pole anchor head, if tensile stress is bigger, hollow section can be changed to solid tubes, and anchoring ability can strengthen greatly.
(5) installation can be carried out in any position of boring hole depth in the position of hole packer, not limited by other part, and installation rate is fast, at 10-20 between second.And other hole packer can only be in the aperture, can not be in a certain position of boring hole depth.
(6) hole packer can also be installed two or more hole packers at the diverse location in the boring hole, requires purpose to reach different scientific researches.The hole packer of other form does not all reach the requirement that a diverse location in the boring hole is installed two or more hole packers at present.
(7) sealing of hole is 38mm～49mm boring carrying out sealing of hole at external diameter, big if the aperture of boring becomes, and can also produce the different hole packer of design and reach its requirement.
Type approval test
Hole packer load industrial experiment is respectively in the shell anchor head experiment of carrying out rising of big head colliery, Yaoqiao Coal Mine of Datun Coal ﹠ Electricity Co..Anchored force reaches 5～8 tons.Reach on-the-spot supporting requirement.
In sum, the feature performance benefit of the mechanical friction type hole packer maximum after the improvement is the mechanical swelling principle that it adopts the shell-type that expands, one makes it easier to be fastening, and two because its structure itself can make it have the characteristics of " more pressing tighter ", makes the sealing of hole effect better.The more important thing is its simple structure and cheap cost also be other hole packers can not compare, so, can reclaim its bloated shell and sphenocephaly part during use, the trouble of avoided the hydraulic expansion type hole packer to reclaim, clean, maintenance being brought.The operating efficiency that these all help improving in the mine production has reduced labour intensity, has saved cost.In addition, according to same principle, expand shell and sphenocephaly of the core component of this hole packer can be used as the anchor head of recoverable anchor rod, and this technology has obtained checking in testing at the scene.
Claims (5)
1. one kind is used to draw out methane or the multi-functional hole packer of friction-type that water filling is used, it is characterized in that spanner nut (3) one ends that one of this hole packer has an internal thread are connected with liquid injection pipe (1) one end, spanner nut (3) other end by pad (4) with have externally threaded hollow rod body (6) one ends and be connected, described hollow rod body (6) other end is connected with sphenoid (13) right-hand member that penetrates into the bloated housing (8) of taper, be inserted in sleeve (5) on described hollow rod body (6) external diameter, taper is expanded and is had cannelure (9) and bloated groove (12) on the housing (8), be connected expansion piece (10) between described bloated groove and the bloated groove, described taper is expanded and is inserted sphenoid (13) on housing (8) the right-hand member horn mouth, described taper is expanded to be inserted on the external diameter of housing (8) and is connected with resilient sleeve (11), and described liquid injection pipe (1) is connected with valve (2) and pressure meter.
2. according to claim 1ly a kind ofly be used to draw out methane or the multi-functional hole packer of friction-type that water filling is used, it is characterized in that expand housing (8), sphenoid (13) inner chamber of described liquid injection pipe (1), hollow rod body (6), taper is equipped with admission pipe (7).
3. according to claim 1ly a kind ofly be used to draw out methane or the multi-functional hole packer of friction-type that water filling is used, it is characterized in that described resilient sleeve is a rubber tube.
4. according to claim 1ly a kind ofly be used to draw out methane or the multi-functional hole packer of friction-type that water filling is used, it is characterized in that described sphenoid axial length is L=60mm～85mm, interior caliber is that d is 18mm～25mm, and the angle of wedge is α=5o～8o.
5. according to claim 1ly a kind ofly be used to draw out methane or the multi-functional hole packer of friction-type that water filling is used, the axial length that it is characterized in that described bloated housing is L=13mm～17mm, d=2mm～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200861178U CN202023529U (en) | 2011-03-29 | 2011-03-29 | Friction type multifunctional hole packer for drawing out methane or injecting water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200861178U CN202023529U (en) | 2011-03-29 | 2011-03-29 | Friction type multifunctional hole packer for drawing out methane or injecting water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023529U true CN202023529U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200861178U Expired - Fee Related CN202023529U (en) | 2011-03-29 | 2011-03-29 | Friction type multifunctional hole packer for drawing out methane or injecting water |
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| CN (1) | CN202023529U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291352A (en) * | 2013-06-24 | 2013-09-11 | 中国矿业大学(北京) | Mechanical spiral hole packer used for draining coal seam gas |
| CN105672921A (en) * | 2016-01-22 | 2016-06-15 | 华北科技学院 | Coal seam drill hole packer simulation pushing device and pushing method |
| CN107060683A (en) * | 2017-03-15 | 2017-08-18 | 华北科技学院 | A kind of quick apparatus and method to hole packer parcel rubber with pressure |
-
2011
- 2011-03-29 CN CN2011200861178U patent/CN202023529U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291352A (en) * | 2013-06-24 | 2013-09-11 | 中国矿业大学(北京) | Mechanical spiral hole packer used for draining coal seam gas |
| CN103291352B (en) * | 2013-06-24 | 2015-08-26 | 中国矿业大学(北京) | For the mechanical spiral hole packer of coal bed gas drainage |
| CN105672921A (en) * | 2016-01-22 | 2016-06-15 | 华北科技学院 | Coal seam drill hole packer simulation pushing device and pushing method |
| CN105672921B (en) * | 2016-01-22 | 2018-01-26 | 华北科技学院 | Coal bed drilling hole packer simulates propulsion plant and propulsion method |
| CN107060683A (en) * | 2017-03-15 | 2017-08-18 | 华北科技学院 | A kind of quick apparatus and method to hole packer parcel rubber with pressure |
| CN107060683B (en) * | 2017-03-15 | 2023-05-23 | 华北科技学院 | Device and method for rapidly wrapping rubber with hole packer under pressure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20140329 |