CN113944445A - Two-plugging two-injection type anti-slip multi-type tire bag hole packer for gas extraction drilling - Google Patents
Two-plugging two-injection type anti-slip multi-type tire bag hole packer for gas extraction drilling Download PDFInfo
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- CN113944445A CN113944445A CN202111283233.3A CN202111283233A CN113944445A CN 113944445 A CN113944445 A CN 113944445A CN 202111283233 A CN202111283233 A CN 202111283233A CN 113944445 A CN113944445 A CN 113944445A
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- 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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- 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
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Abstract
用于瓦斯抽采钻孔的两堵两注型防滑落多类型胎囊封孔器，包括长度方向沿倾斜钻孔长度方向设置的抽采管，抽采管上间隔设有下胶体胎囊和上胶体胎囊，下胶体胎囊和上胶体胎囊之间通过穿设有一根长注浆管，长注浆管上端口设有位于上胶体胎囊上侧外部的堵头，长注浆管上在下胶体胎囊和上胶体胎囊内部均设有注浆孔，下胶体胎囊内穿设有一根短注浆管，短注浆管上端口位于下胶体胎囊和上胶体胎囊之间的环腔内。本发明在钻孔施工完成，抽采管和将封孔器插入钻孔后，由注浆管向胶体胎囊里注入封孔介质，在压力介质与钻孔壁的挤压下，封孔器胎囊撑起钻孔并嵌入钻孔壁中，使抽采管不易滑移，胶体胎囊的密封结构的改进也进一步提高封孔效果。
The two-block, two-injection type anti-falling multi-type tire bladder sealer used for gas drainage drilling includes a drainage pipe arranged along the length of the inclined drilling hole, and the upper space between the drainage pipe is provided with a lower colloidal tire bladder and A long grouting pipe is passed between the upper colloidal sac, the lower colloidal sac and the upper colloidal sac. The upper port of the long grouting pipe is provided with a plug located outside the upper side of the upper colloidal sac. The long grouting pipe There are grouting holes inside the upper, lower colloidal sac and the upper colloidal sac. A short grouting pipe is pierced in the lower colloidal sac. The upper port of the short grouting pipe is located between the lower colloidal sac and the upper colloidal sac. within the annular cavity. According to the invention, after the drilling construction is completed, the pipe is drawn and the hole sealing device is inserted into the drilling hole, the hole sealing medium is injected into the colloidal tire bag from the grouting pipe, and the hole sealing device is squeezed by the pressure medium and the hole wall. The tire bladder supports the borehole and is embedded in the borehole wall, so that the drawing pipe is not easy to slip, and the improvement of the sealing structure of the colloidal tire bladder further improves the sealing effect.
Description
Technical Field
The invention belongs to the technical field of coal mine gas extraction, and particularly relates to a two-plugging two-injection type anti-slip multi-type tire bag hole packer for a gas extraction drill hole.
Background
After the construction of the gas extraction drill hole of the underground bottom suction roadway, the smooth gas extraction must be carried out immediately by inserting the pipe and sealing the hole, if the holes are unified after the sector of the whole construction drill site is completely formed, the hole of the drill hole formed first is easy to collapse, so that the hole sealing device cannot be inserted smoothly, and the drill hole is easy to scrap. However, the hole packer used for the coal mine underground pumping roadway is generally large in length, if the hole packer is inserted immediately after a single drilling hole is formed, the hole packer is inserted into an uplink hole when the bottom pumping roadway is upwards inserted into the uplink hole, due to the large dead weight of the hole packer, the hole packer can easily slide off automatically without taking measures, if the hole packer is inserted into the hole packer for grouting immediately after the single drilling hole is formed, a grouting pump needs to be cleaned immediately after each hole is grouted, the workload of workers is increased, the efficiency is low, and the efficiency and the effect of gas pumping and normal excavation replacement are affected.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the two-plugging two-injection type anti-slipping multi-type tire bag hole packer for gas extraction drilling, which has the advantages of firm fixation, high construction efficiency, low cost and low labor intensity.
In order to solve the technical problems, the invention adopts the following technical scheme: a two stifled two notes type antiskid fall polymorphic type child sacs hole packer for gas drainage drilling, including the drainage pipe that length direction set up along slope drilling length direction, the interval is equipped with down colloid child bag and last colloid child bag on the drainage pipe, through wearing to be equipped with a long slip casting pipe between lower colloid child bag and the last colloid child bag, long slip casting pipe upper port is equipped with the end cap that is located the outside of upper side of colloid child bag, all be equipped with the injected hole on long slip casting pipe in colloid child bag and last colloid child bag inside down, wear to be equipped with a short slip casting pipe in the lower colloid child bag, short slip casting pipe upper port is located the ring intracavity between lower colloid child bag and the last colloid child bag.
Two grouting holes of the long grouting pipe are respectively provided with a one-way valve.
And the two side walls of the lower rubber body tire bag are provided with lower pipe penetrating rubber nozzles which are respectively in sealing fit with the outer circles of the long grouting pipe and the short grouting pipe, the two side walls of the upper rubber body tire bag are provided with upper pipe penetrating rubber nozzles which are in sealing fit with the outer circle of the long grouting pipe, and the outer circles of the upper pipe penetrating rubber nozzles and the lower pipe penetrating rubber nozzles are provided with clamps.
The outer circles of the lower rubber body tire bag and the upper rubber body tire bag are respectively provided with an outer convex sealing structure, the inner circles of central cylindrical holes of the lower rubber body tire bag and the upper rubber body tire bag are respectively provided with a first inner convex sealing structure, and a second inner convex sealing structure is arranged inside a lower tube penetrating rubber nozzle on the lower rubber body tire bag and an upper tube penetrating rubber nozzle on the upper rubber body tire bag; end face reinforcing structures are arranged outside the upper side face and the lower side face of the lower rubber body tire bag and the upper rubber body tire bag.
The outer convex sealing structure is a plurality of outer sealing convex ribs which are all in a ring shape, all the outer sealing convex ribs are arranged at intervals along the direction of the central line of the rubber tyre bag, and the cross section of each outer sealing convex rib is in a semicircular structure.
The first inner convex sealing structure is a plurality of inner sealing convex ribs which are all in a circular ring shape, all the inner sealing convex ribs are arranged in the center cylindrical hole at equal intervals along the direction of the central line of the rubber tire bag, and the cross section of each inner sealing convex rib is in a semicircular structure.
The second inner convex sealing structure comprises a plurality of annular convex ridges which are integrally arranged in the inner circle of the pipe penetrating rubber nozzle, the annular convex ridges are uniformly arranged at intervals along the direction of the central line of the pipe penetrating rubber nozzle, the inner circle of each annular convex ridge is of a conical structure, and the thick port of each conical structure is an inlet end when a grouting pipe penetrates into the thick port.
The end face reinforcing structure is a plurality of radial reinforcing ribs, all the radial reinforcing ribs are uniformly arranged along the central line direction of the rubber tire bladder, each radial reinforcing rib is arranged along the radial direction of the rubber tire bladder, and the radial reinforcing ribs protrude out of the outer side face of the rubber tire bladder and are in an integral structure with the rubber tire bladder.
By adopting the technical scheme, the installation and hole sealing specific process comprises the following steps: firstly, sleeving central cylindrical holes of an upper rubber tire bag and a lower rubber tire bag on an outer circle of an extraction pipe, adjusting the distance between the upper rubber tire bag and the lower rubber tire bag to be the length of a grouting hole sealing, simultaneously enabling an upper pipe penetrating rubber nozzle on the upper rubber tire bag to correspond to the central line of a group of lower pipe penetrating rubber nozzles on the lower rubber tire bag, penetrating a long grouting pipe into the lower pipe penetrating rubber nozzle and the upper pipe penetrating rubber nozzle which correspond to each other up and down, and installing an upper plug (in threaded connection) after the upper end of the long grouting pipe penetrates out of the upper rubber tire bag; then, a short grouting pipe is inserted into the other group of lower pipe penetrating rubber nozzles of the lower rubber body tire bag, the upper end of the short grouting pipe extends into the middle upper part of the annular cavity between the upper rubber body tire bag and the lower rubber body tire bag, and finally all the clamps are screwed down to ensure that the perforated rubber nozzles and the grouting pipes are reliably sealed; after the installation is finished, the whole hole packer is upwards extended into a drill hole, a grouting pump is connected with the lower port of a long grouting pipe firstly, grout is injected into an upper rubber body tire bag and a lower rubber body tire bag through two one-way valves on the long grouting pipe, the upper rubber body tire bag and the lower rubber body tire bag expand to extrude the hole wall of the drill hole until the display value of a pressure gauge on a liquid injection pump reaches a preset value, and the liquid injection of the liquid injection pump is stopped; the grouting stop valve is arranged, so that grout injected into the upper rubber tire bag and the lower rubber tire bag cannot flow backwards, the hole packer is suspended in a drill hole under the action of friction force between the two rubber tire bags and the wall of the drill hole and cannot fall off, a grouting closed space is formed by an annular cavity between the upper rubber tire bag and the lower rubber tire bag in the wall of the drill hole, a grouting pump is connected with a lower port of the short grouting pipe, grouting is performed in the annular cavity between the upper rubber tire bag and the lower rubber tire bag through the short grouting pipe, the grouting stop time is finally determined according to a display value of a pressure gauge on the grouting pump, the grouting stop valve preset at the lower end of the short grouting pipe is closed, and grouting hole sealing operation is completed.
If the hole is temporarily sealed, only water is injected into the upper rubber tire bag and the lower rubber tire bag, and the annular cavity between the upper rubber tire bag and the lower rubber tire bag is not injected with slurry.
After slurry is injected into the upward rubber tire bag and the lower rubber tire bag, the upper rubber tire bag and the lower rubber tire bag expand, and the inner wall of the drilled hole is not smooth and flat and has a plurality of depressions or bulges, so that a plurality of external sealing ribs on the excircle of the expanded upper rubber tire bag and the lower rubber tire bag are tightly attached according to the depressions or bulges in different areas of the inner wall of the drilled hole, and better sealing and axial positioning effects are realized. The outer sealing convex rib also has the effect of improving the bearing strength of the upper rubber body tire bag and the lower rubber body tire bag, and when the inner wall of the drill hole moves, the outer sealing convex rib and the inner wall of the drill hole slide and rub, so that the abrasion of the excircle of the upper rubber body tire bag and the excircle of the lower rubber body tire bag can be reduced.
A plurality of inner sealing convex ribs of the first inner convex sealing structure are tightly pressed with the outer circle of the extraction pipe under the pressure of internal slurry, and the sealing effect is greatly improved.
Circle is conical structure in the protruding seal structure's in the second annular bead, and the thick port of conical structure is entrance point when penetrating the slip casting pipe, conveniently penetrates the slip casting pipe like this, under the effect of poling rubber nipple self elasticity, closely laminates with the slip casting pipe excircle in the annular bead, uses the clamp to further improve sealing connection's reliability simultaneously.
The arrangement of the radial reinforcing ribs improves the bearing performance (including radial and axial bearing) of two end surfaces of the upper rubber body tyre bag and the lower rubber body tyre bag.
The sealing structures and the reinforcing structures on the upper rubber body tyre bag and the lower rubber body tyre bag are all made of an integrated structure with the rubber body tyre bag, so that the sealing reliability is also improved.
In conclusion, the invention has scientific principle and simple structure, and is arranged on the extraction pipe when in use. After the drilling construction is finished, the extraction pipe and the hole packer are simultaneously inserted into the drill hole, hole-sealing media are injected into the colloid tyre bag through the grouting pipe, and under the extrusion of the pressure media and the wall of the drill hole, the colloid tyre bag props up the drill hole and is embedded into the wall of the drill hole, so that the extraction pipe is not easy to slide, and the hole-sealing effect is further improved through the improvement of the sealing structure of the colloid tyre bag.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is an axial cross-sectional view of the present invention;
FIG. 3 is an enlarged view of the upper bladder of FIG. 1;
fig. 4 is a side view of fig. 3.
Detailed Description
As shown in figures 1-4, the two-plug two-injection anti-slip multi-type tire bag hole packer for gas extraction drilling comprises an extraction pipe 1 arranged along the length direction of an inclined drilling hole in the length direction, a lower rubber tire bag 2 and an upper rubber tire bag 3 are arranged on the extraction pipe 1 at intervals, a long injection pipe 4 penetrates between the lower rubber tire bag 2 and the upper rubber tire bag 3, a plug 5 positioned on the outer portion of the upper side of the upper rubber tire bag 3 is arranged at an upper port of the long injection pipe 4, injection holes are formed in the lower rubber tire bag 2 and the upper rubber tire bag 3 on the long injection pipe 4, a short injection pipe 6 penetrates through the lower rubber tire bag 2, and an upper port of the short injection pipe 6 is positioned in an annular cavity between the lower rubber tire bag 2 and the upper rubber tire bag 3.
Two grouting holes of the long grouting pipe 4 are respectively provided with a one-way valve 7.
And lower tube-penetrating rubber nozzles 8 which are respectively in sealing fit with the outer circles of the long grouting tube 4 and the short grouting tube 6 are arranged on the two side walls of the lower rubber body tire bag 2, upper tube-penetrating rubber nozzles 9 which are in sealing fit with the outer circle of the long grouting tube 4 are arranged on the two side walls of the upper rubber body tire bag 3, and clamps 10 are arranged on the outer circles of the upper tube-penetrating rubber nozzles 9 and the lower tube-penetrating rubber nozzles 8.
The outer circles of the lower rubber body tyre bag 2 and the upper rubber body tyre bag 3 are both provided with an outer convex sealing structure, the inner circles of central cylindrical holes of the lower rubber body tyre bag 2 and the upper rubber body tyre bag 3 are provided with a first inner convex sealing structure, and a second inner convex sealing structure is arranged inside a lower tube penetrating rubber nozzle 8 on the lower rubber body tyre bag 2 and an upper tube penetrating rubber nozzle 9 on the upper rubber body tyre bag 3; end face reinforcing structures are arranged outside the upper side face and the lower side face of the lower rubber body tyre bag 2 and the upper rubber body tyre bag 3.
The outer convex sealing structure is a plurality of outer sealing convex ribs 11 which are all in a ring shape, all the outer sealing convex ribs 11 are arranged at intervals along the direction of the central line of the colloid tyre bag, and the cross section of each outer sealing convex rib 11 is in a semicircular structure.
The first inner convex sealing structure is a plurality of inner sealing convex ribs 12 which are all in the shape of a circular ring, all the inner sealing convex ribs 12 are arranged in a central cylindrical hole at uniform intervals along the direction of the central line of the rubber tire bag, and the cross section of each inner sealing convex rib 12 is in a semicircular structure.
The second inner convex sealing structure comprises a plurality of annular convex ridges 13 integrally arranged in the inner circle of the pipe penetrating rubber nozzle, the annular convex ridges 13 are uniformly arranged at intervals along the direction of the central line of the pipe penetrating rubber nozzle, the inner circle of each annular convex ridge 13 is of a conical structure, and the thicker end of the conical structure is an inlet end when the conical structure penetrates into a grouting pipe.
The end face reinforcing structure is a plurality of radial reinforcing ribs 14, all the radial reinforcing ribs 14 are uniformly arranged along the central line direction of the rubber tire bladder, each radial reinforcing rib 14 is arranged along the radial direction of the rubber tire bladder, and the radial reinforcing ribs 14 protrude out of the outer side face of the rubber tire bladder and are integrated with the rubber tire bladder.
The installation and hole sealing process of the invention comprises the following steps: firstly, sleeving central cylindrical holes of an upper rubber tire bag 3 and a lower rubber tire bag 2 on an excircle of an extraction pipe 1, adjusting the distance between the upper rubber tire bag 3 and the lower rubber tire bag 2 to be the grouting hole sealing length, simultaneously enabling an upper pipe penetrating rubber nozzle 9 on the upper rubber tire bag 3 to correspond to the central line of a group of lower pipe penetrating rubber nozzles 8 on the lower rubber tire bag 2, penetrating a long injection pipe 4 into the lower pipe penetrating rubber nozzle 8 and the upper pipe penetrating rubber nozzle 9 which correspond to each other up and down, and installing an upper plug 5 (in threaded connection) after the upper end of the long injection pipe 4 penetrates out of the upper rubber tire bag 3; then, a short grouting pipe 6 is inserted into the other group of lower tube penetrating rubber nozzles 8 of the lower rubber body tire bag 2, the upper end of the short grouting pipe 6 extends into the middle upper part of the annular cavity between the upper rubber body tire bag 3 and the lower rubber body tire bag 2, and finally all the clamps 10 are screwed down to ensure that the hole penetrating rubber nozzles and the grouting pipes are reliably sealed; after the installation is finished, the whole hole packer is upwards extended into a drill hole, a grouting pump is connected with a long grouting pipe 4 at first, grout is injected into an upper rubber body tire bag 3 and a lower rubber body tire bag 2 through two one-way valves 7 on the long grouting pipe 4, the upper rubber body tire bag 3 and the lower rubber body tire bag 2 are expanded, the hole wall of the drill hole is extruded until a pressure gauge display value on the grouting pump reaches a preset value, and the grouting of the grouting pump is stopped; due to the arrangement of the one-way valve 7, grout injected into the upper rubber tire bag 3 and the lower rubber tire bag 2 cannot flow backwards, at the moment, the hole packer is suspended in a drill hole under the action of friction force between the two rubber tire bags and the wall of the drill hole and cannot fall off, the wall of the drill hole forms a grouting closed space in an annular cavity between the upper rubber tire bag 3 and the lower rubber tire bag 2 in an expansion mode, a grouting pump is connected with the lower port of the short grouting pipe 6, grouting is conducted in the annular cavity between the upper rubber tire bag 3 and the lower rubber tire bag 2 in the expansion mode through the short grouting pipe 6, grouting stopping time is finally determined according to a display value of a pressure gauge on the grouting pump, a grouting stop valve preset at the lower end of the short grouting pipe 6 is closed, and grouting hole sealing operation is completed.
If the hole is temporarily sealed, only water is injected into the upper rubber tire bag 3 and the lower rubber tire bag 2, and the annular cavity between the upper rubber tire bag 3 and the lower rubber tire bag 2 is not grouted.
After slurry is injected into the upward rubber tire bag 3 and the lower rubber tire bag 2, the upper rubber tire bag 3 and the lower rubber tire bag 2 expand, and because the inner wall of the drilled hole is not smooth and flat and has a plurality of concave or convex parts, a plurality of external sealing convex ribs 11 on the excircle of the expanded upper rubber tire bag 3 and the lower rubber tire bag 2 are tightly attached according to the concave or convex parts of the inner wall of the drilled hole in different areas, so that better sealing and axial positioning effects are realized. The outer sealing convex rib 11 also has the function of improving the bearing strength of the upper rubber body tyre bag 3 and the lower rubber body tyre bag 2, and when the inner wall of the drill hole moves, the outer sealing convex rib 11 and the inner wall of the drill hole are in sliding friction, so that the abrasion of the outer circles of the upper rubber body tyre bag 3 and the lower rubber body tyre bag 2 can be reduced.
A plurality of inner sealing convex ribs 12 of the first inner convex sealing structure are tightly pressed with the excircle of the extraction pipe 1 under the pressure of internal slurry, and the sealing effect is greatly improved.
The inner circle of the annular convex ridge 13 of the second inner convex sealing structure is of a conical structure, the thick port of the conical structure is an inlet end when the grouting pipe penetrates, so that the grouting pipe can conveniently penetrate, the inner circle of the annular convex ridge 13 is tightly attached to the outer circle of the grouting pipe under the action of the self elasticity of the pipe penetrating rubber nozzle, and the reliability of sealing connection is improved.
The arrangement of the radial reinforcing ribs 14 improves the bearing performance (including radial and axial bearing) of the two end surfaces of the upper rubber tire bag 3 and the lower rubber tire bag 2.
The sealing structures and the reinforcing structures on the upper rubber body tyre bag 3 and the lower rubber body tyre bag 2 are all made of an integrated structure with the rubber body tyre bags, so that the sealing reliability is also improved.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A two stifled two notes types antiskid of type fall polymorphic type embryo bag hole packers for gas drainage drilling, its characterized in that: including the drainage pipe that length direction set up along the slope drilling length direction, the interval is equipped with down colloid child bag and last colloid child bag on the drainage pipe, through wearing to be equipped with a long slip casting pipe between lower colloid child bag and the last colloid child bag, long slip casting pipe upper end mouth is equipped with the end cap that is located the outside of last colloid child bag upside, all be equipped with the injected hole on long slip casting pipe in colloid child bag and last colloid child bag inside down, wear to be equipped with a short slip casting pipe in the lower colloid child bag, short slip casting pipe upper end mouth is located the ring intracavity between lower colloid child bag and the last colloid child bag.
2. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 1, characterized in that: two grouting holes of the long grouting pipe are respectively provided with a one-way valve.
3. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 1, characterized in that: and the two side walls of the lower rubber body tire bag are provided with lower pipe penetrating rubber nozzles which are respectively in sealing fit with the outer circles of the long grouting pipe and the short grouting pipe, the two side walls of the upper rubber body tire bag are provided with upper pipe penetrating rubber nozzles which are in sealing fit with the outer circle of the long grouting pipe, and the outer circles of the upper pipe penetrating rubber nozzles and the lower pipe penetrating rubber nozzles are provided with clamps.
4. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 3, characterized in that: the outer circles of the lower rubber body tire bag and the upper rubber body tire bag are respectively provided with an outer convex sealing structure, the inner circles of central cylindrical holes of the lower rubber body tire bag and the upper rubber body tire bag are respectively provided with a first inner convex sealing structure, and a second inner convex sealing structure is arranged inside a lower tube penetrating rubber nozzle on the lower rubber body tire bag and an upper tube penetrating rubber nozzle on the upper rubber body tire bag; end face reinforcing structures are arranged outside the upper side face and the lower side face of the lower rubber body tire bag and the upper rubber body tire bag.
5. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 4, characterized in that: the outer convex sealing structure is a plurality of outer sealing convex ribs which are all in a ring shape, all the outer sealing convex ribs are arranged at intervals along the direction of the central line of the rubber tyre bag, and the cross section of each outer sealing convex rib is in a semicircular structure.
6. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 4, characterized in that: the first inner convex sealing structure is a plurality of inner sealing convex ribs which are all in a circular ring shape, all the inner sealing convex ribs are arranged in the center cylindrical hole at equal intervals along the direction of the central line of the rubber tire bag, and the cross section of each inner sealing convex rib is in a semicircular structure.
7. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 4, characterized in that: the second inner convex sealing structure comprises a plurality of annular convex ridges which are integrally arranged in the inner circle of the pipe penetrating rubber nozzle, the annular convex ridges are uniformly arranged at intervals along the direction of the central line of the pipe penetrating rubber nozzle, the inner circle of each annular convex ridge is of a conical structure, and the thick port of each conical structure is an inlet end when a grouting pipe penetrates into the thick port.
8. The two-plug two-injection anti-slip multi-type tire bag hole packer for the gas extraction drill hole according to claim 4, characterized in that: the end face reinforcing structure is a plurality of radial reinforcing ribs, all the radial reinforcing ribs are uniformly arranged along the central line direction of the rubber tire bladder, each radial reinforcing rib is arranged along the radial direction of the rubber tire bladder, and the radial reinforcing ribs protrude out of the outer side face of the rubber tire bladder and are in an integral structure with the rubber tire bladder.
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| CN202111283233.3A CN113944445A (en) | 2021-11-01 | 2021-11-01 | Two-plugging two-injection type anti-slip multi-type tire bag hole packer for gas extraction drilling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115839223A (en) * | 2022-11-03 | 2023-03-24 | 河南理工大学 | Flexible pressure-maintaining recoverable intelligent hole sealing method for multiple groups of drilled holes in same roadway |
| CN116044341A (en) * | 2022-12-15 | 2023-05-02 | 河南理工大学 | A construction technique of real-time pressure-holding and sealing holes with two blocks and two injections |
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