CN216115645U - Liquid CO2Phase-change hydraulic pressure blasting cartridge - Google Patents
Liquid CO2Phase-change hydraulic pressure blasting cartridge Download PDFInfo
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- CN216115645U CN216115645U CN202120331820.4U CN202120331820U CN216115645U CN 216115645 U CN216115645 U CN 216115645U CN 202120331820 U CN202120331820 U CN 202120331820U CN 216115645 U CN216115645 U CN 216115645U
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Abstract
The utility model discloses liquid CO2Phase change water pressure blasting cartridge includes: the device comprises a liquid injection valve, a time delay exciter, a heating pipe, a liquid storage pipe, a shear blade and a water injection pressure relief head; the liquid storage pipe is provided with a large opening at one end and a small opening at the other end, and the liquid injection valve is connected to the large opening end of the liquid storage pipe in a threaded manner and sealed at the threaded connection position; the heating pipe is supported inside the large end of the liquid storage pipe through a positioning structure, and a through hole for communicating the liquid injection valve with the liquid storage pipe is formed in the positioning structure; the time delayThe exciter is set with a set delay time and is inserted into the heating tube from the large opening end of the liquid storage tube, and the shear slice seals the liquid storage tube from the small opening end of the liquid storage tube; wherein, the water injection pressure release head is in threaded connection with the small opening end of the liquid storage pipe, and the shearing sheet is tightly pressed between the two.
Description
Technical Field
The utility model relates to the technical field of rock static blasting equipment for mining, tunnel construction and the like, in particular to liquid CO2Phase change water pressure blasting cartridge.
Background
The energy-accumulating hydraulic blasting is effective combination of hydraulic blasting and conventional rock drilling blasting, and is a blasting control method formed by comprehensively considering the advantages of the energy-accumulating hole effect and the hydraulic blasting on the basis of research on the theory of the energy-accumulating hole effect and the hydraulic blasting. The energy-gathering tube device replaces the cartridge and the explosion-transmitting line in the conventional blasting hole, the water bags are arranged at the bottom and the upper part of the blasting hole, and the stemming processed by a stemming machine is used for backfilling. The high-temperature high-pressure jet flow and the water wedge effect of the energy-collecting pipe enhance the static effect of the expanding gas, the defect of conventional blasting is overcome, meanwhile, due to the fact that the water bag is placed in the blast hole, water mist generated in the blasting process plays a role in dust fall, the operation environment is improved, the health of constructors is protected, and the blasting technology is emerging in recent years.
At the same time, liquid CO2The phase-change blasting technology has the characteristics of advanced concept, environmental protection, safety, high efficiency, obvious effect and the like, is widely applied to projects such as gas coal mine rock breaking, foundation pit excavation, side slope, ditch and cutting excavation and the like, and becomes a preferred non-explosive rock breaking method when explosive blasting cannot be adopted. The technology is to utilize liquid CO2The instantaneous phase is changed into gas state, the volume expansion is nearly 600 times, and the formed high-pressure gas jet flow breaks the rock. Compared with the common explosive blasting, the gas is slowly expanded and diffused, the pressure of high-pressure gas generated by blasting is lower than the pressure of explosive blasting, is about 1/3 of black powder and 1/6 of ammonium nitrate explosive, has stable shearing effect, and is suitable for brittle porous rock mass with low blasting strength. However, high pressure CO2The gas jet rock breaking effect is limited, the gas jet rock breaking method is only suitable for coal rocks, weathered rock and soil bodies and the like, if the blasting power is further increased, the blasting power can be realized only by increasing the volume of a liquid storage pipe and the shear strength, and the difficulty of blast hole blockage and the risk of flying pipes are increased.
To make liquid CO2The phase-change blasting technology is suitable for blasting conditions of various rock masses, and the combination of the existing advanced energy-gathering water pressure blasting technology and liquid CO is urgently needed2The phase-change blasting technology is a new high-power, green and environment-friendly non-explosive blasting technology.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a liquid CO2The phase-change hydraulic pressure blasting cartridge can effectively utilize liquid CO2The high pressure generated at the moment of phase change acts on the water body in the pressure relief head to form CO with the density higher than that of the gas2High-pressure water jet with two orders of magnitude of jet flow acts on rock mass, so that liquid CO is enhanced2The phase-change blasting tube power is suitable for non-explosive blasting engineering of hard rock, the cracking range is enlarged, the rock mass breakage rate is improved, and liquid CO is fully exerted2The advantages and the application range of the phase change blasting.
The technical scheme of the utility model is as follows: liquid CO2Phase change water pressure blasting cartridge includes: the device comprises a liquid injection valve, a time delay exciter, a heating pipe, a liquid storage pipe, a shear blade and a water injection pressure relief head;
the liquid storage pipe is provided with a large opening at one end and a small opening at the other end, and the liquid injection valve is connected to the large opening end of the liquid storage pipe in a threaded manner and sealed at the threaded connection position; the heating pipe is supported inside the large end of the liquid storage pipe through a positioning structure, and a through hole for communicating the liquid injection valve with the liquid storage pipe is formed in the positioning structure; the time delay exciter is provided with set delay time and is inserted into the heating tube from the large opening end of the liquid storage tube, and the shear slice seals the liquid storage tube from the small opening end of the liquid storage tube; wherein, the water injection pressure release head is in threaded connection with the small opening end of the liquid storage pipe, and the shearing sheet is tightly pressed between the two.
Preferably, the water injection pressure relief head comprises: the water bag type perforating machine comprises a barrel, a bottom partial flow structure and a water bag, wherein one end of the barrel is opened, the other end of the barrel is closed, the bottom partial flow structure is integrally processed at the center of the inner bottom surface of the closed end, the bottom partial flow structure is conical and is coaxial with the barrel, the top of the bottom partial flow structure faces the opening end of the barrel, more than two circles of vertical perforations are axially arranged on the wall surface of the barrel, and each circle of vertical perforations comprises more than two vertical perforations uniformly distributed along the circumferential direction of the barrel; two or three oblique perforation holes are uniformly arranged on the wall surface of the barrel body corresponding to a set position above the bottom end of the bottom partial flow structure along the circumferential direction, and an included angle with a set size is formed between the axial direction of the oblique perforation holes and the axial direction of the barrel body and is in smooth transition with the bottom end of the bottom partial flow structure; wherein, the water bag is arranged in the barrel above the top of the bottom split structure, and the open end of the barrel is provided with external threads for being in threaded connection with the small open end of the liquid storage tube.
Preferably, the included angle between the axial direction of the holes of the inclined perforation and the axial direction of the cylinder body is 45 degrees.
Preferably, the center of the outer end of the closed end of the cylinder body is provided with a bulge.
Preferably, the apex angle of the bottom partial flow structure is 90 °.
Preferably, the materials of the bottom part flow structure and the barrel are high-strength alloy steel.
Preferably, the body of the water bag is a degradable plant fiber sealing bag.
Preferably, the water body filled in the water bag is recycled waste water.
Preferably, the positioning structure is a sponge or plastic support.
Has the advantages that:
1. the blasting cartridge adopts advanced energy-gathering water pressure blasting theory technology and liquid CO2The phase-change blasting technology and complete equipment mainly comprise an inflation valve, a liquid storage pipe, a heating pipe, a shear slice and a barrel body of a water injection pressure relief head, which are all the existing mature parts, are easy to match and replace, have reliable quality, can be recycled for multiple times and have rich goods sources; the time delay exciter has simple structure and is durable; the water injection pressure relief head is environment-friendly in filling the water bag, convenient to assemble, simple and efficient to operate; for the existing liquid CO2The utility model can be improved to a certain extent and is applied to various types and series of liquid CO2And on the phase-change blasting cartridge, blasting and crushing engineering of rock masses with different strengths is realized.
2. The water injection pressure relief head disclosed by the utility model only needs to arrange the packaging water bag in the pressure relief head in the construction process, and then the pressure relief head is fixedly connected to the bottom of the liquid storage pipe, so that the operation is simple, the efficiency is high, the blasting effect is obvious, and the environment-friendly effect is realized.
Drawings
FIG. 1 is a liquid CO of the present invention2The structural schematic diagram of the phase-change hydraulic pressure blasting cartridge.
Fig. 2 is a schematic structural view of a water injection pressure relief head according to the present invention.
FIG. 3 is a schematic view of the structure of the water bag of the present invention.
The system comprises a liquid injection valve 1, a time delay exciter 2, a heating pipe 3, a liquid storage pipe 4, a shear slice 5, a water injection pressure relief head 6, a water injection pressure relief head 61, a water injection pressure relief head threaded interface 62, a vertical perforation 63, a bottom part flow structure 64, an inclined perforation 65 and a water bag 65.
Detailed Description
The utility model is described in detail below by way of example with reference to the accompanying drawings.
This example provides a liquid CO2The phase-change hydraulic pressure blasting cartridge can effectively utilize liquid CO2The high pressure generated at the moment of phase change acts on the water body in the pressure relief head to form CO with the density higher than that of the gas2High-pressure water jet with two orders of magnitude of jet flow acts on rock mass, so that liquid CO is enhanced2The phase-change blasting tube power is suitable for non-explosive blasting engineering of hard rock, the cracking range is enlarged, the rock mass breakage rate is improved, and liquid CO is fully exerted2The advantages and the application range of the phase change blasting.
As shown in fig. 1, the explosive cartridge comprises: the device comprises a liquid injection valve 1, a time delay exciter 2, a heating pipe 3, a liquid storage pipe 4, a shear blade 5 and a water injection pressure relief head 6;
the connection relation of the explosive cartridge is as follows: one end of the liquid storage pipe 4 is provided with a large opening, the other end of the liquid storage pipe 4 is provided with a small opening, the small opening is a funnel-shaped opening, the liquid injection valve 1 is in threaded connection with the large opening end of the liquid storage pipe 4, and the threaded connection is sealed; before fixed liquid injection valve 1, earlier support heating tube 3 inside the main aspects of liquid storage tube 4 through location structure (like sponge or plastics supporter etc.), and be equipped with the through-hole of intercommunication liquid injection valve 1 and liquid storage tube 4 among the location structure, later with time delay energizer 2 set for delay time and insert heating tube 3 from the big opening end of liquid storage tube 4 in, cut 5 and seal from the little opening end of liquid storage tube 4 to liquid storage tube 4, prevent liquid CO in the liquid storage tube 42Before phase change, the water flows into the water injection pressure relief head 6; wherein, the water injection pressure relief head 6 is connected with the small opening end of the liquid storage pipe 4 in a threaded manner, and the shear slice 5 is tightly pressed between the water injection pressure relief head 6 and the liquid storage pipe 4; after the connection and fixation of the explosive cartridge are finished, liquid CO is injected from the injection valve 12And leading out a lead to be connected with the detonating network;
as shown in fig. 2 and 3, the water injection pressure relief head 6 includes: the device comprises a cylinder, a bottom partial flow structure 63 and a water bag 65, wherein one end of the cylinder is open, the other end of the cylinder is closed, the bottom partial flow structure 63 is integrally processed at the center of the inner bottom surface of the closed end, the bottom partial flow structure 63 is conical and is coaxial with the cylinder, the top of the bottom partial flow structure 63 faces the open end of the cylinder, more than two circles of vertical perforations 62 are axially arranged on the wall surface of the cylinder, and each circle of vertical perforations 62 comprises more than two vertical perforations 62 which are uniformly distributed along the circumferential direction of the cylinder; two or three oblique perforation holes 64 are uniformly arranged on the wall surface of the barrel body corresponding to the set position above the bottom end of the bottom partial flow structure 63 along the circumferential direction, and an included angle between the axial direction of the oblique perforation holes 64 and the axial direction of the barrel body 1 is 45 degrees and is in smooth transition with the bottom end of the bottom partial flow structure 63; wherein, the water bag 65 is arranged in the cylinder above the top of the bottom part flow structure 63, the open end of the cylinder is provided with external threads for being in threaded connection with the small open end of the liquid storage tube 4, and the center of the outer end of the closed end is provided with a bulge for being held conveniently;
in this embodiment, the water bag 65 is a degradable plant fiber sealing bag, and the water filled therein may be recycled wastewater;
in this embodiment, the water bag 65 filled with water is disposed in the water injection pressure relief head 6 before the water injection pressure relief head is fixedly connected with the liquid storage tube 4;
in this embodiment, the apex angle of the bottom partial flow structure 63 is 90 °;
in the embodiment, the bottom partial flow structure 63 and the cylinder are made of high-strength alloy steel (35CrMnSiA) which can bear the impact pressure of the high-pressure water jet;
in the embodiment, the adjustable delay exciter 2 is connected with the detonating wire through the surface electric detonating network, and the reaction time of the heating tube 3 is accurately controlled, so that the liquid CO in the liquid storage tube 4 is heated2When the liquid is in a supercritical state, instant phase change occurs, high pressure is formed in the liquid storage tube 4 and acts on the shear slice 5; when the pressure in the liquid storage pipe 4 exceeds the shearing strength of the shearing sheet 5, the shearing sheet 5 is sheared, high-pressure gas enters the water injection pressure relief head 6 instantly, the water body in the water bag 65 bears the pressure to cause the water bag 65 to break, and high-pressure water is ejected through the inclined perforation 64 and the vertical perforation 62 and acts on a rock body in a high-speed water jet mode; the rock mass is fully fractured under the impact action, the erosion action and the water wedge action of the high-pressure water jet, so that the liquid CO is obviously enhanced2The efficiency of phase change blasting cracking;
in the embodiment, the delay exciter 2 is internally provided with an accurate delay electronic device, the initiation is controlled by an initiation wire, the stray current interference is resisted, the repeated recycling can be realized, and the strong liquid CO can be recycled2The phase change blasting cartridge realizes millisecond-level delay detonation in and among the holes.
The working principle of the explosive cartridge is as follows: efficient utilization of liquid CO2The high pressure generated in the phase change moment acts on the water body to form CO with the density higher than that of the gas state2Two-magnitude high-pressure water jet flow is acted on rock mass to enhance liquid CO2The phase-change blasting tube power is suitable for non-explosive blasting engineering of hard rock, the cracking range is enlarged, the rock mass breakage rate is improved, and liquid CO is fully exerted2The advantages and the application range of the phase change blasting.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Liquid CO2Phase change water pressure blasting cartridge, its characterized in that includes: the device comprises a liquid injection valve (1), a time delay exciter (2), a heating pipe (3), a liquid storage pipe (4), a shearing sheet (5) and a water injection pressure relief head (6);
one end of the liquid storage pipe (4) is provided with a large opening, the other end of the liquid storage pipe is provided with a small opening, and the liquid injection valve (1) is in threaded connection with the large opening end of the liquid storage pipe (4) and is sealed at the threaded connection part; the heating pipe (3) is supported inside the large end of the liquid storage pipe (4) through a positioning structure, and a through hole for communicating the liquid injection valve (1) with the liquid storage pipe (4) is formed in the positioning structure; the time delay exciter (2) is provided with set delay time and is inserted into the heating tube (3) from the large opening end of the liquid storage tube (4), and the shear blade (5) seals the liquid storage tube (4) from the small opening end of the liquid storage tube (4); wherein, the water injection pressure relief head (6) is connected with the small opening end of the liquid storage pipe (4) in a threaded manner, and the shear blade (5) is tightly pressed between the two.
2. Liquid CO according to claim 12Phase changeWater pressure blasting cartridge, its characterized in that, water injection pressure relief head (6) include: the device comprises a barrel, a bottom part flow structure (63) and a water bag (65), wherein one end of the barrel is opened, the other end of the barrel is closed, the bottom part flow structure (63) is integrally processed at the center of the inner bottom surface of the closed end, the bottom part flow structure (63) is conical and is coaxial with the barrel, the top of the bottom part flow structure (63) faces the opening end of the barrel, more than two circles of vertical perforations (62) are axially arranged on the wall surface of the barrel, and each circle of vertical perforations (62) comprises more than two vertical perforations (62) which are uniformly distributed along the circumferential direction of the barrel; two or three inclined perforating holes (64) are uniformly arranged on the wall surface of the barrel body corresponding to a set position above the bottom end of the bottom partial flow structure (63) along the circumferential direction, and an included angle with a set size is formed between the axial direction of the inclined perforating holes (64) and the axial direction of the barrel body and is in smooth transition with the bottom end of the bottom partial flow structure (63); wherein, the water bag (65) is arranged in the barrel above the top of the bottom part flow structure (63), and the opening end of the barrel is provided with an external thread for being in threaded connection with the small opening end of the liquid storage tube (4).
3. Liquid CO according to claim 22The phase-change hydraulic blasting cartridge is characterized in that an included angle between the axial direction of the inclined perforation holes (64) and the axial direction of the cartridge body is 45 degrees.
4. Liquid CO according to claim 22The phase-change hydraulic pressure blasting cartridge is characterized in that a bulge is arranged in the center of the outer end of the closed end of the cartridge body.
5. Liquid CO according to claim 22The phase-change hydraulic blasting cartridge is characterized in that the apex angle of the bottom partial flow structure (63) is 90 degrees.
6. Liquid CO according to claim 22The phase-change hydraulic pressure blasting cartridge is characterized in that the bottom partial flow structure (63) and the cartridge body are made of high-strength alloy steel.
7. Liquid CO according to claim 22Phase change hydraulic pressure blasting cartridge, characterized in that the water bag (6)5) The bag body adopts a degradable plant fiber sealing bag.
8. Liquid CO according to claim 22The phase-change hydraulic pressure blasting cartridge is characterized in that the water body filled in the water bag (65) is recycled wastewater.
9. Liquid CO according to claim 12The phase-change hydraulic pressure blasting cartridge is characterized in that the positioning structure is a sponge or plastic support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120331820.4U CN216115645U (en) | 2021-02-05 | 2021-02-05 | Liquid CO2Phase-change hydraulic pressure blasting cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120331820.4U CN216115645U (en) | 2021-02-05 | 2021-02-05 | Liquid CO2Phase-change hydraulic pressure blasting cartridge |
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| CN216115645U true CN216115645U (en) | 2022-03-22 |
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| CN202120331820.4U Active CN216115645U (en) | 2021-02-05 | 2021-02-05 | Liquid CO2Phase-change hydraulic pressure blasting cartridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048845A (en) * | 2021-02-05 | 2021-06-29 | 中国化工程重型机械化有限公司 | Liquid CO2Phase-change hydraulic pressure blasting cartridge |
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2021
- 2021-02-05 CN CN202120331820.4U patent/CN216115645U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048845A (en) * | 2021-02-05 | 2021-06-29 | 中国化工程重型机械化有限公司 | Liquid CO2Phase-change hydraulic pressure blasting cartridge |
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