CN214039743U - Rock mass directional fracturing device - Google Patents
Rock mass directional fracturing device Download PDFInfo
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- CN214039743U CN214039743U CN202021908170.7U CN202021908170U CN214039743U CN 214039743 U CN214039743 U CN 214039743U CN 202021908170 U CN202021908170 U CN 202021908170U CN 214039743 U CN214039743 U CN 214039743U
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- 239000011435 rock Substances 0.000 title claims abstract description 38
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 239000011148 porous material Substances 0.000 claims abstract description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 21
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract description 33
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 238000005336 cracking Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MPCRDALPQLDDFX-UHFFFAOYSA-L Magnesium perchlorate Chemical compound [Mg+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MPCRDALPQLDDFX-UHFFFAOYSA-L 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- YRNNKGFMTBWUGL-UHFFFAOYSA-L copper(ii) perchlorate Chemical compound [Cu+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O YRNNKGFMTBWUGL-UHFFFAOYSA-L 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- WABPQHHGFIMREM-YPZZEJLDSA-N lead-205 Chemical compound [205Pb] WABPQHHGFIMREM-YPZZEJLDSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
An embodiment of the utility model provides a directional ware that splits that sends of rock mass relates to mine engineering blasting field. The method comprises the following steps: the heating device comprises a main pipe, a heating rod, a filling head and an adapter; the charging head is connected to the first end of the main pipe, the adapter is connected to the second end of the main pipe, and a first binding post is arranged on the adapter; a filling channel for filling carbon dioxide into the main pipe is arranged on the filling head, and a needle valve for opening and closing the filling channel is arranged in the filling channel; the heating rod comprises a base and a paper tube arranged on the base, a pore channel is reserved on the base, a second binding post is arranged in the pore channel and extends into the paper tube, a threading hole is formed in one end, far away from the base, of the paper tube, a conducting wire is arranged on the second binding post and one end, located in the paper tube, of the paper tube, and the conducting wire is axially arranged in the paper tube and is led out from the threading hole to be connected to the second binding post of the adapter; the side wall of the main pipe is also provided with a cutting groove in the axial direction. The directional blasting of the rock mass is convenient to realize, thereby improving the blasting effect.
Description
Technical Field
The utility model relates to a mine engineering blasting field especially relates to a directional ware that splits that sends of rock mass.
Background
The cracking device is a blasting device for breaking rock or coal breakage, and the principle of the cracking device is that liquid carbon dioxide is used for gasification and expansion, high-pressure gas is rapidly released, the volume can be expanded by more than 600 times, and then the blasting effect is achieved.
Along with the widening of the application range of the traditional fracturing device, the fracturing device is gradually applied to the presplitting blasting of the underground roof of the coal mine, but the inventor of the utility model discovers in the process of realizing the invention creation: the traditional fracturing device is in a point blasting mode, namely energy is released in a point mode, the influence range of blasting is limited, directional fracture of an engineering rock mass can not be realized according to a preset direction under most working conditions, the rock mass of a region near a blasting point can be broken sometimes, and the blasting effect is influenced by the condition that the rock mass of other regions is not fractured.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a directional ware that splits of rock mass is convenient for realize the directional blasting of rock mass to improve blasting effect.
An embodiment of the utility model provides a directional ware that splits that sends of rock mass, include: the heating device comprises a main pipe, a heating rod, a filling head and an adapter; the charging head is connected to the first end of the main pipe, the adapter is connected to the second end of the main pipe, and a first binding post is arranged on the adapter;
a filling channel for filling carbon dioxide into the main pipe is arranged on the filling head, and a needle valve for opening and closing the filling channel is arranged in the filling channel;
the heating rod comprises a base and a paper tube arranged on the base, the paper tube is arranged in the cavity of the main pipe, a mounting hole is formed in the filling head and parallel to the filling channel, the base of the heating rod is screwed in the mounting hole of the filling head, the tail of the base is pressed against the end face of the filling head, a hole passage is reserved in the base, a second wiring terminal is arranged in the hole passage and extends into the paper tube, a threading hole is formed in one end, far away from the base, of the paper tube, a lead is arranged at one end, located in the paper tube, of the second wiring terminal, and the lead is axially arranged in the paper tube and is led out from the threading hole to be connected to the second wiring terminal of the adapter;
the side wall of the main pipe is axially provided with a cutting groove.
Optionally, a sealing gasket is arranged at the contact position of the tail part of the base of the heating rod and the end face of the filling head.
Optionally, the filling head includes an end cap, a boss is provided on a first surface of the end cap, the filling channel is axially arranged in parallel with the mounting hole, the filling channel is of a stepped hole structure and includes a first stepped hole and a second stepped hole, the first stepped hole and the second stepped hole are coaxially arranged, the first stepped hole is arranged through the first surface and the second surface of the end cap, and the second surface is opposite to the first surface;
the second step hole axially penetrates through the boss to be connected with the first step hole, the aperture of the second step hole is larger than that of the first step hole, an injection port penetrating through the side face of the boss is formed in the side wall of the second step hole, and a first thread is formed in the inner wall of the second step hole between the orifice of the second step hole and the injection port;
the mounting hole penetrates through the boss and the end cover, and second threads are arranged on the inner wall of the mounting hole between the hole opening of the mounting hole and the first surface of the end cover.
Optionally, the charging head is welded to the first end of the main pipe through the second surface of the end cap, and the adapter is welded to the second end of the main pipe.
Optionally, the base includes an end plate, a first boss and a second boss, the end plate is in a shape of an inverted round-head rectangle, the first boss is stacked on the first surface of the end plate, the second boss is stacked on the upper surface of the first boss, and the end plate, the first boss and the second boss are coaxially disposed;
the first boss and the second boss are of cylindrical structures, third threads are arranged on the outer circumferential surface of the second boss, the distance from the center to the edge of the end plate is greater than the radius of the bottom surface of the first boss, and the radius of the bottom surface of the first boss is greater than the radius of the bottom surface of the second boss;
the pore passes through the base setting, including first order pore and second order pore, first order pore certainly in second boss upper surface extends to the second boss, the second order pore with first order pore end links to each other, and runs through to the end plate second surface, first order pore and the coaxial setting of second order pore, second order pore aperture is greater than first order pore aperture.
Optionally, the adapter is a cylindrical structure with an opening, and the bottom of the cylindrical structure is provided with a terminal mounting part.
The embodiment of the utility model provides a directional ware that splits of rock mass improves through sending the structure of splitting ware itself, can realize the directional release of energy, installs it in drilling such as rock tunnel and pit shaft, is convenient for realize the directional blasting of rock mass, and then reduces the damage of country rock unnecessary to improve blasting effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a rock mass directional fracturing device according to an embodiment of the present invention;
fig. 2 is a sectional view of a rock mass directional fracturing device according to an embodiment of the present invention;
FIG. 3 is a front view of one embodiment of the main tube of FIG. 1 or FIG. 2;
FIG. 4 is a cross-sectional view of the main tube A-A of FIG. 3;
FIG. 5 is an enlarged view of FIG. 4 at B;
FIG. 6 is a cross-sectional view of one embodiment of the filler head of FIG. 1 or FIG. 2;
FIG. 7 is a top view of an embodiment of the filler head of FIG. 6;
FIG. 8 is a left side elevational view of an embodiment of the fill head of FIG. 6;
FIG. 9 is a cross-sectional view of an embodiment of a heating rod;
FIG. 10 is a cross-sectional view of an embodiment of a base of a heating rod;
FIG. 11 is a right side view of an embodiment of the heat generating rod base of FIG. 10;
FIG. 12 is a schematic structural view of an embodiment of the transition joint of FIG. 1 or FIG. 2;
fig. 13 is a schematic structural view of a rock mass directional fracturing device according to another embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be apparent that numerous technical details are set forth in the following detailed description to provide a more thorough description of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without some of these details. In addition, some methods, means, components and applications thereof known to those skilled in the art are not described in detail in order to highlight the gist of the present invention, but the implementation of the present invention is not affected thereby. The embodiments described herein are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 12, the embodiment of the utility model provides a directional ware that splits of rock mass, simple structure is applicable to in the mine engineering rock mass blasting, is particularly useful for having the blasting occasion of control rock blasting shaping requirement.
Referring to fig. 1 and 2, the device comprises: a main pipe 100, a heating rod 200, a filling head 300 and an adapter 400; the first end at being responsible for 100 is connected to the head 300 that fills, adapter 400 is connected at the second end of being responsible for 100 be equipped with first terminal 401 on adapter 400.
A filling passage 310 for filling carbon dioxide into the main pipe 100 is provided on the filling head 300, and a needle valve 302 for opening and closing the filling passage 310 is provided in the filling passage 310; among them, the Needle valve 302(Needle valve) is a fine adjustment valve, and its valve plug is Needle-shaped, mainly used for adjusting flow, and the Needle-shaped valve plug is generally made of a long Needle made of quenched steel, and the valve seat is made of soft material such as tin, copper, etc. The sealing between the valve needle and the valve seat is achieved by the close fit of the conical surfaces of the valve needle and the valve seat. The taper of the valve needle has two taper angles of 1:50 and 60 degrees, and in the embodiment, the taper of the valve needle is selected to be 60 degrees.
Referring to fig. 2 and 9 to 11, the heating rod 200 includes a base 210 and a paper tube 220 disposed on the base 210, the paper tube 220 is disposed in the cavity of the main tube 100, a cavity 150 is formed between an outer wall of the paper tube 220 and an inner wall of the main tube 100, and the cavity 150 is used for filling carbon dioxide; on the first 300 of filling, with fill parallelly still be equipped with mounting hole 303 of passageway 310, the base 210 of heating rod 200 closes soon fill in the mounting hole 303 of first 300, just the base 210 afterbody press against in fill on the first 300 terminal surfaces, reserve on the base 210 and have the pore be equipped with second terminal 204 in the pore, second terminal 204 extends in the paper tube 220, paper tube 220 keeps away from the one end of base 210 is equipped with the through wires hole (not explicitly illustrated in the figure, and the wire of fig. 2 is worn to establish the mode and is hidden and indicate this characteristic) second terminal 204, be located one of paper tube 220 and serve and be used for the wire 205 that ignites, wire 205 axial is laid in paper tube 220, and follow draw in the through wires hole connect in on the second terminal 204 of adapter 400.
Referring to fig. 13, it can be understood that in order to adapt to some deeper boreholes, longer frackers are required, and when one fracker is shorter, a plurality of frackers can be conveniently connected into a whole of a suitable length by the adapter 400 to adapt to boreholes of different depths.
Further, a second binding post 204 is arranged on the adapter 400 and is used for connecting a lead 205 of a previous fracturing device; in this way, an igniter is connected to the first terminal 401, so that each of the crack initiators can be conveniently ignited and activated.
In addition, because the traditional carbon dioxide fracturing device adopts a point blasting mode, namely energy is released in a point mode, the influence range of blasting is limited, directional fracture of the engineering rock mass can not be realized according to the preset direction under most working conditions, the rock mass in the area near the blasting point can be broken sometimes, and the blasting effect is influenced under the condition that the rock mass in other areas is not fractured.
In this embodiment, the main tube 100 is further provided with a slot 150 in the axial direction. The cutting slots 150 are blind slots.
Thus, after the electric ignition head 500 in the glow stick 200 ignites the heating agent, the gasification pressure of the carbon dioxide in the main pipe 100 rises, when the pressure reaches the strength limit of the cutting groove 150, the cutting groove 150 is damaged, the high-energy and high-pressure carbon dioxide gas is released along the cutting groove 150, a linear cutting gas flow is formed, the rock mass is directionally cut, and the directional rock mass pre-splitting blasting is realized.
The shape of the cutting groove can be a long strip shape, and can also be other geometric shapes, and the shape is not limited herein.
In some embodiments, the slots are stepped slots formed on the inner wall of the main pipe, wherein the cross-sectional area of the first step slot at the opening of the inner wall of the main pipe is the largest, and the cross-sectional areas of the second step slot, the third step slot and the like formed along the radial depth of the side wall of the main pipe are gradually decreased. Therefore, high-energy high-pressure carbon dioxide gas can firstly break through the cutting groove with the minimum radial depth sectional area, the formed linear cutting airflow firstly carries out central linear cutting on the peripheral rock mass, and then sequentially breaks through the cutting grooves of all steps along with the rise of the air pressure in the main pipe until the cutting grooves are completely broken.
Wherein, in some embodiments, the main tube 100 has a length of 1000mm, an outer diameter of 79mm, and a wall thickness of 4 mm. In addition, according to the experimental verification of the utility model people, the width of the cutting groove 150 can affect the directional blasting effect; the placement and parameters of the slots 150 in some embodiments are determined by trial and error as: the side wall of the main pipe 100 is axially cut into two cutting grooves 150, the two cutting grooves 150 are symmetrically distributed, the length of each cutting groove 150 is 900mm, the depth of each cutting groove 150 is 1mm, and the width of each cutting groove 150 is 3 mm; 50mm non-cutting grooves 150 are reserved at two ends of the main pipe 100 respectively to ensure the strength of the joint of the two ends of the pipe body.
Based on the fracturing device provided by the embodiment, the rock mass directional blasting method comprises the following steps:
and S1, inserting the rock mass directional fracturing device into the drill hole at a preset depth.
In this embodiment, the length of the fracturing device is determined according to the depth of the drilled hole, if a single fracturing device is not long enough, a plurality of fracturing devices are axially connected through the adapter 400, the cutting grooves 150 on the main pipes 100 of the adjacent fracturing devices need to be aligned in an axial collinear manner during connection, and the plurality of cutting crack fracturing devices are connected with each other and then pushed into the drilled hole of the rock body to be pre-fractured.
In the process of pushing the fracturing device into the drill hole, the supporting rod is connected to the fracturing device at the drill hole, and the supporting rod is used for propping against the fracturing device so as to ensure that the fracturing device group cannot slide out of the drill hole.
Prior to this step S1, the method further comprises: opening the needle valve 302 on the filling channel 310, opening the filling channel 310, and filling carbon dioxide liquid into the main tube 100 through the filling channel 310 by using a carbon dioxide liquid special filling device so as to fill the cavity 150 formed by the paper tube 220 and the main tube 100; the dedicated charging device is closed and the needle valve 302 is closed to complete the carbon dioxide charge.
S2, connecting the second binding post 204 with an electric excitation ignition device outside the fracturing device, and igniting and exciting to start the fracturing device;
the electrically-excited ignition device is an ignition device commonly used in blasting technology, and for example, the electrically-excited ignition device can be a mining explosion-proof type blaster, which is not described herein.
S3, the heating rod 200 is ignited by the conducting wire 205 in the paper tube 220, and a large amount of heat energy is released to instantly gasify the liquid carbon dioxide in the main tube 100, and the pressure in the tube is increased accordingly.
S4, when the pressure rises to reach the strength limit of the main pipe 100 side wall slot 150, the slot 150 is broken in advance.
It will be appreciated that the shear strength at the location of the slot 150 is relatively low, and that the pressure within the main pipe 100 reaches the strength limit at the slot 150, where the slot 150 is first destroyed, and the airflow impinges outwardly from the destroyed slot 150.
And S5, releasing pressurized carbon dioxide gas outwards along the cutting groove 150 by using the cutting groove 150 to form linear cutting gas flow to cut the surrounding rock mass so as to realize directional pre-splitting blasting of the rock mass.
Wherein, the carbon dioxide in the main pipe 100 is about 2.5kg, and the bursting pressure of the fracturing device is about 230 Mpa.
The embodiment of the utility model provides a directional ware that splits of rock mass improves through sending the structure of splitting ware itself, can realize the directional release of energy, when installing it in drilling such as rock tunnel and pit shaft, is convenient for realize the directional blasting of rock mass, and then reduces the damage of country rock unnecessary to improve blasting effect.
Specifically, a first sealing washer 260 is disposed at a contact position of the tail portion of the base 210 of the heating rod 200 and the end surface of the charging head 300, and is used for ensuring that a closed space is formed in the main pipe 100 after the heating rod 200 is ignited and started, so as to facilitate the destruction of the cutting groove 150 after the air pressure rises.
Referring to fig. 9, the second terminal 204 is fixedly connected to the hole by a nut 206, and in order to further improve the sealing performance, a second sealing washer 207 is disposed at the joint of the nut 206 and the second terminal 204.
In order to increase the heat energy released after the ignition of the heating rod 200 is started, in some embodiments, the paper tube 220 is filled with a heating agent; the heating agent is a mixture which can emit heat when a chemical reaction occurs under a certain temperature condition, and the components of the heating agent can adopt the finished product of the heating agent sold on the market; preferably, the heat generating agent in this embodiment is mainly composed of copper perchlorate, magnesium perchlorate, or the like; after the electric ignition device is ignited, the heating agent is burnt at a high speed, heat is provided for the gasification of the liquid carbon dioxide, the pressure in the pipe can be increased rapidly, and high-pressure gas required for blasting the cutting groove 150 can be obtained rapidly.
The lead is connected with an electric ignition head; in this embodiment, the directional blasting method further includes: the conducting wire 205 in the paper tube 220 of the heating rod 200 releases a large amount of heat energy to instantaneously gasify the liquid carbon dioxide in the main tube, and the pressure in the tube rises with the heat energy, which comprises:
the electric igniter in the heating rod paper tube ignites the heating agent, and the burning heating agent is utilized to increase the release of heat so as to accelerate the increase of the air pressure in the main tube 100.
Referring to fig. 6 to 8, the filling head 300 includes an end cap 320 having a boss 330 on a first surface, and the end cap 320 and the boss 330 may be provided in an integral structure for easy processing; in some embodiments, the end cap has an outer diameter of 79mm, the boss has an outer diameter of 72mm, threads are provided on the outer circumference of the boss 330, and the boss has a height of 30 mm; the filling channel 310 is axially arranged in parallel with the mounting hole 303, the filling channel 310 is of a stepped hole structure and comprises a first stepped hole 311 and a second stepped hole 312, the first stepped hole 311 and the second stepped hole 312 are coaxially arranged, the first stepped hole 311 is arranged through a first surface and a second surface of the end cap 320, and the second surface is opposite to the first surface;
The mounting hole 303 penetrates through the boss 330 and the end cap 320, and a second thread is arranged on the inner wall of the mounting hole 303 between the orifice of the mounting hole 303 and the first surface of the end cap 320 and is used for fixedly connecting the base 210 of the heating rod 200;
in some embodiments, the first step hole 311 has a 3mm hole diameter, the injection hole has a 5mm hole diameter, the first thread gauge is M12 × 1.5, the thread length is 15mm, and the second thread gauge is M30 × 1.5.
Specifically, the filling head 300 is welded to the first end of the main pipe 100 through the second surface of the end cap 320, and the adapter 400 is welded to the second end of the main pipe 100. Wherein, the welding requirement guarantees the intensity and the leakproofness of sending the ware.
Referring to fig. 9 to 12, the base 210 includes an end plate 211, a first boss 212 and a second boss 213, and the end plate 211 is a rounded rectangle or a rounded square; in some embodiments, the distance between two straight edges of the end plate 211 is 36mm, the radius of the circular arc is 20mm, and the edge of the first surface of the end plate 211 has a rounded corner with a radius of 0.5 mm; the first boss 212 is stacked on the first surface of the end plate 211, the second boss 213 is stacked on the upper surface of the first boss 212, the end plate 211, the first boss 212 and the second boss 213 may be arranged in an integrated structure, and the end plate 211, the first boss 212 and the second boss 213 are coaxially arranged;
the first boss 212 and the second boss 213 are cylindrical structures, the outer circumferential surface of the second boss 213 is provided with a third thread, the distance from the center to the edge of the end plate 211 is greater than the radius of the bottom surface of the first boss 212, and the radius of the bottom surface of the first boss 212 is greater than the radius of the bottom surface of the second boss 213;
the hole passes through the base 210, and includes a first step hole 2031 and a second step hole 2032, the first step hole 2031 extends from the upper surface of the second boss 213 to the second boss 213, the second step hole 2032 is connected to the end of the first step hole 2031 and passes through to the second surface of the end plate 211, the first step hole 2031 and the second step hole 2032 are coaxially disposed, and the aperture of the second step hole 2032 is larger than the aperture of the first step hole 2031.
In some embodiments, the first step tunnels 2031 have a pore size of 3mm and the second step tunnels 2032 have a pore size of 10 mm.
Referring to figure 13, in some embodiments, the adapter 400 is a cylindrical structure with an opening and a post mounting portion at the bottom of the cylindrical structure.
The installation department can be the unthreaded hole, and in some embodiments, unthreaded hole aperture is 4.5mm, first section terminal both ends are connected with the nut, are equipped with the third sealed pad at the extrusion face of nut.
Specifically, an internal thread is arranged on the inner wall of the cylindrical structure and is used for being in butt joint with the next fracturing device.
Referring to fig. 2, in some embodiments, the electrically-excited ignition device includes an electrical ignition head 500 (an ignition mode commonly used in the current firework setting process), the electrical ignition head 500 is located in the paper tube 220 of the heating rod 200, two wires are provided at two ends of the electrical ignition head, one of the two wires is connected to the second terminal 204 of the charging head 300, and the other wire is connected to the first terminal 401 of the adapter 400, so that the wires 205 on adjacent crackers are conducted; after the plurality of fracturing devices are axially butted, a first binding post 401 on a fracturing device adapter 400 at the bottom of the drill hole is communicated with a fracturing device pipe body; the second binding post 204 on the filling head 300 of the drilling hole cracking device is conducted with the electric ignition head inside the heating rod 200, and the first binding post 401 is conducted with the pipe body. Therefore, the pipe body is used as a pole in the drilling hole of the cracking device, the wiring in the pipe body is used as a pole to form a series circuit, and then electric excitation ignition can be realized to ignite the heating agent in the heating rod 200.
The embodiment of the utility model provides a joint-cutting carbon dioxide sends and splits the ware, compares traditional carbon dioxide and sends and splits the ware, and the structure is simpler, production manufacturing process simplifies, the reliability has obtained improving by a wide margin.
In addition, the utility model discloses the person in charge 100 in the implementation uses the moderate strength (can satisfy the burst pressure), light, low price's Q235 steel manufacturing, and the weight of material is lighter, and is lighter during the use. In addition, the products are not recycled after the directional blasting of the fracturing device, so that the construction process of the directional presplitting blasting of the products at the positions of the underground roof and the like is simplified. Thereby reducing the production cost and the use cost to a certain extent.
The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A rock mass directional fracturing device, comprising: the heating device comprises a main pipe, a heating rod, a filling head and an adapter; the charging head is connected to the first end of the main pipe, the adapter is connected to the second end of the main pipe, and a first binding post is arranged on the adapter;
a filling channel for filling carbon dioxide into the main pipe is arranged on the filling head, and a needle valve for opening and closing the filling channel is arranged in the filling channel;
the heating rod comprises a base and a paper tube arranged on the base, the paper tube is arranged in the cavity of the main pipe, a mounting hole is formed in the filling head and parallel to the filling channel, the base of the heating rod is screwed in the mounting hole of the filling head, the tail of the base is pressed against the end face of the filling head, a hole channel is reserved on the base, a second wiring terminal is arranged in the hole channel and extends into the paper tube, a threading hole is formed in one end, far away from the base, of the paper tube, a guide wire for ignition is arranged at one end, located in the paper tube, of the second wiring terminal, and the guide wire is axially arranged in the paper tube and is led out from the threading hole to be connected to the second wiring terminal of the adapter;
the side wall of the main pipe is axially provided with a cutting groove.
2. The fracturing unit of claim 1, wherein a sealing gasket is arranged at the contact position of the tail part of the base of the heating rod and the end face of the filling head.
3. The fracker of claim 2, wherein the filling head includes an end cap having a boss on a first surface thereof, the filling passage being axially parallel to the mounting hole, the filling passage being of stepped bore configuration including a first step bore and a second step bore, the first step bore being coaxially disposed with the second step bore, the first step bore being disposed through the end cap first and second surfaces, the second surface being opposite the first surface;
the second step hole axially penetrates through the boss to be connected with the first step hole, the aperture of the second step hole is larger than that of the first step hole, an injection port penetrating through the side face of the boss is formed in the side wall of the second step hole, and a first thread is formed in the inner wall of the second step hole between the orifice of the second step hole and the injection port;
the mounting hole penetrates through the boss and the end cover, and second threads are arranged on the inner wall of the mounting hole between the hole opening of the mounting hole and the first surface of the end cover.
4. The fracker of claim 3, wherein the fill head is welded to the first end of the main pipe through the second surface of the end cap and the adapter is welded to the second end of the main pipe.
5. The fracker of claim 4, wherein the base includes an end plate, a first boss, and a second boss, the end plate is a rounded rectangle, the first boss is stacked on a first surface of the end plate, the second boss is stacked on an upper surface of the first boss, and the end plate, the first boss, and the second boss are coaxially disposed;
the first boss and the second boss are of cylindrical structures, third threads are arranged on the outer circumferential surface of the second boss, the distance from the center to the edge of the end plate is greater than the radius of the bottom surface of the first boss, and the radius of the bottom surface of the first boss is greater than the radius of the bottom surface of the second boss;
the pore passes through the base setting, including first order pore and second order pore, first order pore certainly in second boss upper surface extends to the second boss, the second order pore with first order pore end links to each other, and runs through to the end plate second surface, first order pore and the coaxial setting of second order pore, second order pore aperture is greater than first order pore aperture.
6. The frac of claim 1 wherein the adapter is a cylindrical structure having an opening and a post mounting portion at the bottom of the cylindrical structure.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790052A (en) * | 2021-09-08 | 2021-12-14 | 北京科技大学 | Porous symmetrical energy-releasing joint cutting carbon dioxide fracturing device along axial direction of drill hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790052A (en) * | 2021-09-08 | 2021-12-14 | 北京科技大学 | Porous symmetrical energy-releasing joint cutting carbon dioxide fracturing device along axial direction of drill hole |
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