CN215447610U - Wide-adaptability fracturing pipe for rock breaking by liquid carbon dioxide phase change - Google Patents
Wide-adaptability fracturing pipe for rock breaking by liquid carbon dioxide phase change Download PDFInfo
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- CN215447610U CN215447610U CN202120330872.XU CN202120330872U CN215447610U CN 215447610 U CN215447610 U CN 215447610U CN 202120330872 U CN202120330872 U CN 202120330872U CN 215447610 U CN215447610 U CN 215447610U
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Abstract
The utility model discloses a wide-adaptability cracking tube for liquid carbon dioxide phase change rock breaking, which comprises an excitation tube, wherein the excitation tube is assembled in an expandable tube body, a port of the expandable tube body is detachably connected with a sealing cover, the sealing cover is provided with a gas inlet pipeline, the upper end of the gas inlet pipeline is connected with a gas inlet pipe, the lower end of the gas inlet pipeline is connected with a gas transmission cover body, the gas transmission cover body is communicated with the expandable tube body through a communication hole, an elastic sealing mechanism is arranged in the gas inlet pipeline, and the elastic sealing mechanism is used for elastically sealing one end of the gas inlet pipeline so as to control gas to enter the expandable tube body. This application simple structure, safety, stability are high, and convenient inspection uses easy operation, and the equipment process is simple, and the operating efficiency is high, but multiple big gun hole aperture of adaptation and broken rock construction technology, and the operating mode is stable and the inspection is convenient with control.
Description
Technical Field
The utility model belongs to the field of carbon dioxide blasting equipment, and relates to a wide-adaptability cracking pipe for rock breaking by liquid carbon dioxide phase change.
Background
In the engineering field, with the improvement of the requirement on environmental safety, explosive blasting is often limited in some safe and non-sensitive areas. The liquid carbon dioxide phase change rock breaking technology is a new irreplaceable option in the field of rock breaking engineering by virtue of the characteristics of strong controllability, high safety, simple process, no pollution and the like.
The carbon dioxide phase change rock breaking is based on liquid carbon dioxide in a fracturing pipe, rapid gasification is carried out under the excitation heating of an excitation pipe, the volume rapidly expands in the fracturing pipe to form high-pressure gas, the gas breaks through the restraint of the fracturing pipe under high pressure to form high-pressure jet injection to act on the rock wall of a blast hole to generate stress waves, the high-pressure jet injection is carried out to generate a wedge effect at the outer boundary of the blast hole, and rock mass around the blast hole is fractured and broken under the action of the stress waves and the wedge effect.
The cracking tube is a place for breaking rock by carbon dioxide phase change to be placed in a blast hole, storing carbon dioxide and enabling the carbon dioxide to be gasified by liquid heating to generate phase change, and is an important core device for directly influencing the carbon dioxide phase change rock breaking process. The fracturing pipe for carbon dioxide phase change rock breaking has multiple forms of repeated use of the fracturing pipe, one-time use of the fracturing pipe filled outside a hole, one-time use of the fracturing pipe filled inside the hole and the like. However, the aforementioned fracturing pipe has the following disadvantages:
1. the pipe diameter is all fixed, and is single with the suitability in big gun hole aperture, accomplishes to pack the back, all can't know and control the operating mode of downthehole fracture pipe, and there is the safety risk in blind big gun processing.
2. The repeatedly used cracking tube has structural defects, the potential safety hazard of 'flying tube' exists essentially, the tube body is heavy, and the operation is inconvenient.
3. The disposable cracking tube filled outside the hole is an integral tube in which a heating tube is packaged in advance, the defect that the heating tube in the tube cannot be checked and replaced exists, and after the carbon dioxide blast hole is filled outside the hole, the subsequent carrying and hole filling operation of the cracking tube has potential safety hazards because the heating tube in the tube is in an activated state with high confining pressure.
4. The disposable cracking tube filled in the hole is a split type assembly tube, the components are made of multiple materials, the overall performance is unstable, the assembly process is complicated, the operation is complex, and the operation efficiency is low.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a wide-adaptability cracking tube for rock breaking through liquid carbon dioxide phase change.
In order to achieve the purpose, the utility model adopts the following technical measures:
the utility model provides a wide adaptability fracturing pipe of broken rock of liquid carbon dioxide phase transition, is including arousing the pipe, it is internal at the expandable tube to arouse the assembly of pipe, the detachable closing cap that is connected with of port of expandable tube body, be equipped with the admission line on the closing cap, the admission line upper end is connected with the intake pipe, and the lower extreme of admission line is connected with the gas transmission cover body, the gas transmission cover body passes through the intercommunicating pore intercommunication the expandable tube body, install elastic sealing mechanism in the admission line, elastic sealing mechanism is used for elastic sealing admission line one end is in order to control gas to get into the expandable tube body.
Preferably, the elastic sealing mechanism comprises a check piston, a piston rod of the check piston is in clearance fit with the communicating hole, and a check spring is sleeved on the check piston.
Preferably, the air inlet pipeline is connected with the air inlet pipe through a first connecting nut, and a first sealing ring is arranged between the air inlet pipe and the air inlet pipeline.
Preferably, the seal cover is provided with an air outlet channel, the air outlet channel is provided with a connecting bolt, and the connecting bolt is connected with an air outlet pipe.
Preferably, the connecting bolt is sleeved with a second sealing ring, and the connecting bolt is installed on the air outlet channel through the second sealing ring.
Preferably, the gas transmission cover body is connected to one end of the gas inlet pipeline through a bolt.
Preferably, the sealing cover is in threaded connection with the expandable pipe body, and a third sealing ring is arranged at a port of the expandable pipe body.
Preferably, the expandable pipe body comprises a rubber pipe body, the rubber pipe body is of a pleat strip extending type structure, two ends of the rubber pipe body are respectively connected with a threaded pipe orifice section and a sealing base plate section through pipe body transition hoops, and the threaded pipe orifice section is used for being connected with the sealing cover.
Preferably, the connecting bolt is connected with the air outlet pipe through a second connecting nut, and a fourth sealing ring is arranged between the air outlet pipe and the connecting bolt.
Preferably, an electric ignition head is installed in the excitation tube, the electric ignition head is connected with an inner conducting wire, the inner conducting wire is connected with an outer conducting wire, and the outer conducting wire is installed on the sealing cover.
The beneficial effects of utility model reside in that:
compared with the prior art, the wide-adaptability fracturing pipe for liquid carbon dioxide phase change rock breaking has the advantages of simple structure, safety, high stability, convenience in inspection, simplicity in use and operation, simplicity in assembly process, high operation efficiency, suitability for various blast hole apertures and rock breaking construction processes, stable working condition and convenience in inspection and control.
Drawings
FIG. 1 is a structural diagram of a wide-adaptability cracking tube for rock breaking by liquid carbon dioxide phase change
FIG. 2 is a schematic diagram of an assembly structure of a wide-adaptability cracking tube for rock breaking by liquid carbon dioxide phase change according to the present invention;
FIG. 3 is a schematic diagram of a process for assembling a cap of a wide-adaptability cracking tube for rock breaking by phase change of liquid carbon dioxide according to the present invention;
FIG. 4 is a flow chart of the assembly of a wide-adaptability fracturing pipe for rock breaking by liquid carbon dioxide phase change according to the present invention;
FIG. 5 is a schematic diagram of a wide-adaptability cracking tube for rock breaking by liquid carbon dioxide phase change according to the present invention;
fig. 6 is a schematic diagram of carbon dioxide out-filling of a wide-adaptability cracking tube for rock breaking by liquid carbon dioxide phase change according to an embodiment;
fig. 7 is a schematic view of the carbon dioxide internal filling of the wide-adaptability cracking tube for rock breaking by liquid carbon dioxide phase transition according to the second embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-7, a wide-bore fracturing pipe for rock phase change by liquid carbon dioxide comprises an excitation pipe 18, wherein the excitation pipe 18 is assembled in an expandable pipe body 12, during blasting, the expandable pipe body 12 is installed in a pre-dug blast hole 20, the expandable pipe body 12 can be filled with liquid carbon dioxide outside the blast hole 20, or the blast hole 20 can be filled with liquid carbon dioxide, and the expandable pipe body 12 can be expanded after being filled with liquid carbon dioxide to meet the requirements of the blast holes 20 with different bore diameters. An electric ignition head 19 is installed in the exciting tube 18, the electric ignition head 19 is connected with an inner conducting wire 17, the inner conducting wire 17 is detachably connected with an outer conducting wire 16, and the outer conducting wire 16 is installed on the sealing cover 9. When the outer lead 16 is connected with a detonation power supply, the electric igniter 19 ignites and excites detonation to provide required heat energy for phase change of liquid carbon dioxide, and the liquid carbon dioxide is instantly gasified and expanded to apply work to break rocks.
In this embodiment, the expandable tubular body 12 includes a rubber tubular body, the rubber tubular body adopts a pleat strip extending structure, two ends of the rubber tubular body are respectively connected with a threaded tubular port section and a sealing base plate section through a tubular body transition hoop, the threaded tubular port section is used for being in threaded connection with the sealing cover 9, and a third sealing ring 15 is arranged at a port of the expandable tubular body 12. After the rubber tube body 12 is filled with the liquid carbon dioxide, the rubber tube body can expand to be tightly clamped in the blast hole 20.
More in detail, be equipped with inlet line 91 on the closing cap 9, inlet line 91 upper end is connected with intake pipe 1, intake pipe 1 is used for filling liquid carbon dioxide, there is gas transmission cover body 11 at the lower extreme of inlet line 91 through the bolt connection, gas transmission cover body 11 passes through the intercommunicating pore 92 intercommunication expandable pipe body 12, install the elastic sealing mechanism in the inlet line 91, the elastic sealing mechanism is used for elastic sealing inlet line 91 one end is in order to control gaseous entering expandable pipe body 12. In this embodiment, the flaring passageway and the slot passageway of intercommunication each other of admission line 91, elastic sealing mechanism sets up in the flaring passageway, the bottom of flaring passageway with the cover body 11 of gas transmission is connected, elastic sealing mechanism includes contrary piston 14 that ends, contrary piston 14's piston rod with intercommunicating pore 92 clearance fit, the contrary spring 13 that ends that has cup jointed on the contrary piston 14, the piston end of contrary piston 14 is in the jam under the elastic force of contrary spring 13 one side of slot passageway.
When liquid carbon dioxide is filled, the air inlet pipe 1 is connected with a liquid carbon dioxide inflation device, the air pressure in the narrow-mouth passage is larger than the sum of the elastic force of the check spring 13 and the pressure of the expandable pipe body 12, the liquid carbon dioxide can push the check piston 14 to descend, so that the flared passage is communicated with the narrow-mouth passage, and the liquid carbon dioxide can enter the expandable pipe body 12 through the air inlet pipeline 91 and the communication hole 92; when the air pressure in the narrow-mouth passage is equal to the sum of the elastic force of the check spring 13 and the pressure of the expandable tube body 12, the check spring 13 is reset, so that the check piston 14 separates the flared passage from the narrow-mouth passage, and the inflation is stopped.
More in detail, inlet line 91 through connect first nut 2 with the intake pipe 1 is connected, intake pipe 1 with be equipped with first sealing washer 3 between the inlet line 91, first sealing washer 3 can improve inlet line 91 with the leakproofness of intake pipe 1 connection, installation and dismantlement also convenient and fast.
An air outlet channel 93 is arranged on the sealing cover 9, a connecting bolt 7 is installed on the air outlet channel 93, the connecting bolt 7 is connected with an air outlet pipe 4, a second sealing ring 8 is sleeved on the connecting bolt 7, and the connecting bolt 7 is installed on the air outlet channel 93 through the second sealing ring 8, so that air leakage can be prevented, and the connection stability of the connecting bolt 7 can be improved; the connecting bolt 7 is connected with the air outlet pipe 4 through a second connecting nut 5, and a fourth sealing ring 6 is arranged between the air outlet pipe 4 and the connecting bolt 7.
The application method of the wide-adaptability cracking tube for rock breaking by liquid carbon dioxide phase change comprises the following steps:
s1: selecting a proper wide-adaptability fracturing pipe according to a rock breaking process, namely selecting and determining the wide-adaptability fracturing pipe matched with the diameter of the blast hole 20 and the adopted carbon dioxide construction process of filling the carbon dioxide outside the hole or inside the hole;
s2: assembling components of the fracturing pipe on site, and assembling the adaptive exciting pipe 18 in the pipe;
s3: filling liquid carbon dioxide;
s4: loading the fracturing pipe into the blast hole 20, and checking the working condition of the fracturing pipe;
s5: according to an electric-excitation priming circuit and a priming sequence adopted by a rock breaking process, all the external leads 16 are connected in series to form an electric-priming circuit, and a special detection instrument for the priming circuit is used for conducting detection;
s6: safety protection is implemented according to a rock breaking process;
s7: initiating detonation, namely directly initiating detonation by adopting a special high-energy pulse blasting detonator;
s8: and (5) inspecting and processing after explosion.
When filling the liquid carbon dioxide hole, the expanded diameter of the expandable tubular body 12 is slightly smaller than the diameter of the blast hole 20, so as to ensure that the fractured tube filled with the carbon dioxide can be smoothly filled into the blast hole.
In conclusion, the wide-adaptability fracturing pipe for liquid carbon dioxide phase change rock breaking has the advantages of simple structure, safety, high stability, convenience in inspection, simplicity in use and operation, simplicity in assembly process, high operation efficiency, suitability for various blast hole apertures and rock breaking construction processes, stable working condition and convenience in inspection and control.
The foregoing is a more detailed description of the utility model, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the utility model be limited to the specific embodiments disclosed herein. To those skilled in the art to which the utility model belongs, a plurality of simple deductions or replacements can be made without departing from the concept of the utility model, and all the deductions or replacements should be regarded as belonging to the protection scope of the utility model.
Claims (10)
1. The utility model provides a wide adaptability fracturing pipe of rock is broken in liquid carbon dioxide phase transition, a serial communication port, including arousing pipe (18), arouse pipe (18) assembly in expandable pipe body (12), the port detachable of expandable pipe body (12) is connected with closing cap (9), be equipped with admission line (91) on closing cap (9), admission line (91) upper end is connected with intake pipe (1), and the lower extreme of admission line (91) is connected with gas transmission cover body (11), gas transmission cover body (11) are through intercommunicating pore (92) intercommunication expandable pipe body (12), install elastic sealing mechanism in admission line (91), elastic sealing mechanism is used for elastic sealing admission line (91) one end is in order to control gaseous entering expandable pipe body (12).
2. The wide-adaptability fracturing pipe for phase change rock breaking of liquid carbon dioxide as claimed in claim 1, wherein the elastic sealing mechanism comprises a check piston (14), a piston rod of the check piston (14) is in clearance fit with the communication hole (92), and a check spring (13) is sleeved on the check piston (14).
3. The wide-adaptability cracking tube for rock breaking through phase change of liquid carbon dioxide as claimed in claim 1, wherein the gas inlet pipe (91) is connected with the gas inlet pipe (1) through a first nut (2), and a first sealing ring (3) is arranged between the gas inlet pipe (1) and the gas inlet pipe (91).
4. The wide-adaptability cracking tube for rock breaking through liquid carbon dioxide phase change according to claim 1, wherein an air outlet channel (93) is arranged on the cover (9), a connecting bolt (7) is mounted on the air outlet channel (93), and the air outlet tube (4) is connected to the connecting bolt (7).
5. The wide-adaptability cracking tube for rock breaking through liquid carbon dioxide phase change according to claim 4, wherein a second sealing ring (8) is sleeved on the connecting bolt (7), and the connecting bolt (7) is installed on the gas outlet channel (93) through the second sealing ring (8).
6. The wide-adaptability cracking tube for rock breaking through carbon dioxide phase change in liquid state of claim 1, wherein the gas transmission hood body (11) is connected to one end of the gas inlet pipeline (91) through a plug (10).
7. The adaptive wide fracturing pipe for rock breaking by carbon dioxide phase change in liquid state according to claim 1, wherein the cap (9) is in threaded connection with the expandable tubular body (12), and a third sealing ring (15) is arranged at the end of the expandable tubular body (12).
8. The wide-adaptability cracking tube for rock breaking through carbon dioxide phase transition as claimed in claim 1, wherein the expandable tube body (12) comprises a rubber tube body, the rubber tube body adopts a pleat-extending structure, two ends of the rubber tube body are respectively connected with a threaded tube mouth section and a sealing chassis section through a tube body transition hoop, and the threaded tube mouth section is used for being connected with the sealing cover (9).
9. The wide-adaptability cracking tube for rock breaking through liquid carbon dioxide phase change according to claim 5, wherein the connecting bolt (7) is connected with the gas outlet tube (4) through a second connecting nut (5), and a fourth sealing ring (6) is arranged between the gas outlet tube (4) and the connecting bolt (7).
10. The wide-adaptability cracking tube for rock breaking through liquid carbon dioxide phase change as claimed in claim 1, wherein an electric ignition head (19) is installed in the excitation tube (18), the electric ignition head (19) is connected with an inner conductive wire (17), the inner conductive wire (17) is connected with an outer lead (16), and the outer lead (16) is installed on the sealing cover (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120330872.XU CN215447610U (en) | 2021-02-05 | 2021-02-05 | Wide-adaptability fracturing pipe for rock breaking by liquid carbon dioxide phase change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120330872.XU CN215447610U (en) | 2021-02-05 | 2021-02-05 | Wide-adaptability fracturing pipe for rock breaking by liquid carbon dioxide phase change |
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| CN215447610U true CN215447610U (en) | 2022-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184046A1 (en) * | 2022-03-30 | 2023-10-05 | Enaex Servicios Sa | Loading hose connector and booster for upward shafts in underground mining |
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2021
- 2021-02-05 CN CN202120330872.XU patent/CN215447610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184046A1 (en) * | 2022-03-30 | 2023-10-05 | Enaex Servicios Sa | Loading hose connector and booster for upward shafts in underground mining |
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