Low-temperature gas hole-filling energy-storing rock fracturing and expanding device

Abstract

The utility model discloses a low temperature gas hole fills and charges energy storage rock and cracks expansion device, including columnar combustible, low temperature liquid filling pipe and ignition device who are arranged along the length direction of columnar combustible, and the outer sleeve pipe of wrapping in columnar combustible, low temperature liquid filling pipe and ignition device, wherein the low temperature liquid filling pipe and the lead of ignition device respectively from the upper end of outer sleeve pipe stretch out, low temperature check valve that the position of low temperature liquid filling pipe on the upper end of outer sleeve pipe is close to is provided with and allows liquid to flow into the outer sleeve pipe through low temperature liquid filling pipe. The utility model can prevent the low temperature liquid oxygen in the hole from spouting from the cut of low temperature liquid filling pipe when cutting the pipe, and ensures the safety of pipe operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas inflation fracturing device technical field, concretely relates to a kind of low-temperature gas hole filling energy storage rock fracturing inflation device. BACKGROUND

[0002] Gas inflation rock fracturing is a new rock breaking technology, compared with traditional blasting mode, with high safety, environmental protection, and other significant advantages, its principle is first using low temperature water belt to suitably package combustible and be loaded into drill hole, then low temperature liquid oxygen is filled into low temperature water belt, and combustible is soaked for a long time by low temperature liquid oxygen, and then high-pressure pulse igniter is driven to ignite electronic fire head to ignite combustible that has absorbed low temperature liquid oxygen, low temperature liquid oxygen instantaneously expands to generate high-pressure gas energy, and rock hole wall is expanded by high-pressure gas energy to crack rock around, so as to achieve the purpose of rock fracturing.

[0003] Low temperature liquid oxygen is generally introduced into low temperature water belt through low temperature liquid filling pipe, after low temperature liquid oxygen is filled, external low temperature liquid oxygen filling equipment needs to be closed first, and then external low temperature liquid filling pipe is cut off, however, after low temperature liquid oxygen is filled, the pressure in low temperature water belt is relatively large, when low temperature liquid filling pipe is cut off, low temperature liquid oxygen is sprayed from the cut-off part of low temperature liquid filling pipe, and the operator is frozen when contacting with the sprayed low temperature liquid oxygen, so that cutting pipe is a relatively dangerous work, even if very careful, it is difficult to avoid accidents. CONTENT OF THE UTILITY MODEL

[0004] In view of defects in the prior art, the utility model provides a kind of low-temperature gas hole filling energy storage rock fracturing inflation device to prevent low temperature liquid oxygen in hole from being sprayed from the cut-off part of low temperature liquid filling pipe when cutting pipe, ensure the safety of cutting pipe operation.

[0005] The utility model provides a kind of low-temperature gas hole filling energy storage rock fracturing inflation device, comprising:

[0006] Cylindrical combustible,

[0007] Low temperature liquid filling pipe and ignition device arranged along the length direction of the cylindrical combustible,

[0008] And outer sleeve tube wrapped in the cylindrical combustible, low temperature liquid filling pipe and ignition device,

[0009] Wherein the lead of low temperature liquid filling pipe and ignition device respectively from the upper end of the outer sleeve tube stretches out;

[0010] Low temperature check valve allowing liquid to flow into outer sleeve tube through low temperature liquid filling pipe is arranged on the position of low temperature liquid filling pipe close to the upper end of outer sleeve tube.

[0011] Further, the columnar combustible material comprises a cloth tube and combustible material filled in the cloth tube, and both ends of the cloth tube are tightly sealed by a strap.

[0012] Further, the columnar combustible material is formed by connecting a plurality of combustible material monomers in series, and the cloth tubes of adjacent combustible material monomers are tightly bound by a strap.

[0013] Further, the ignition device comprises a plurality of electronic fire starters distributed along the length direction of the columnar combustible material and respectively electrically connected with the lead wire, the low-temperature liquid-filled tube and the lead wire of the ignition device are fixed outside the columnar combustible material by a plurality of adhesive tapes distributed along the length direction, and each group of electronic fire starters of the ignition device is wrapped by an adhesive tape.

[0014] Further, an exhaust pipe is further included, one end of the exhaust pipe extends into the outer sleeve pipe, and the other end of the exhaust pipe extends out of the upper end of the outer sleeve pipe.

[0015] Further, an upper end sealing assembly is further included, the upper end sealing assembly comprises:

[0016] a first ring-shaped member, the first ring-shaped member is sleeved outside the outer sleeve pipe, the outer portion of the first ring-shaped member is provided with a first external thread, and the upper end of the outer sleeve pipe is outwardly folded and sleeved outside the first ring-shaped member above the first external thread;

[0017] an upper end cover, the upper end cover has a first ring portion and a first end portion provided at one end of the first ring portion, the inner wall of the first ring portion away from the first end portion is provided with a first internal thread, the upper end cover is sleeved outside the first ring-shaped member, and the first internal thread in the first ring portion of the upper end cover is matched with the first external thread outside the first ring-shaped member, the upper end of the first ring-shaped member tightly abuts the outer sleeve pipe inside the first end portion of the upper end cover, and the first end portion of the upper end cover is provided with a hole for the low-temperature liquid-filled tube, the lead wire of the ignition device and the exhaust pipe to pass through.

[0018] Further, the upper side of the first end portion of the upper end cover is provided with a pull ring portion.

[0019] Further, a lower end sealing assembly is further included, the lower end sealing assembly comprises:

[0020] a second ring-shaped member, the second ring-shaped member is sleeved outside the outer sleeve pipe, the outer portion of the second ring-shaped member is provided with a second external thread, and the lower end of the outer sleeve pipe is outwardly folded and sleeved outside the second ring-shaped member below the second external thread;

[0021] The lower end cover has a second ring part and a second end part arranged at one end of the second ring part, an inner wall of the second ring part is provided with a second internal thread away from one side of the second end part, the lower end cover is sleeved outside the second annular part, and the second internal thread in the second ring part of the lower end cover is matched with the second external thread outside the second annular part, and the second end part of the lower end cover is used for pressing the outer sleeve tube on the lower end of the second annular part.

[0022] Further, the outer sleeve tube adopts a low-temperature-resistant PE water belt sleeve film.

[0023] The beneficial effects of the utility model are shown in:

[0024] During filling, the device needs to be placed into the rock hole, and low-temperature liquid oxygen is injected into the outer sleeve tube of the device through the low-temperature liquid filling pipe, so that the low-temperature liquid oxygen is immersed into the columnar combustible material; after the low-temperature liquid oxygen is filled, the low-temperature liquid filling pipe outside the rock hole is cut off; during blasting, the ignition device ignites the columnar combustible material, and the columnar combustible material ignites to make the liquid oxygen rapidly vaporize and expand, so that the rock is cracked by gas expansion.

[0025] The low-temperature one-way valve is arranged on the low-temperature liquid filling pipe close to the upper end of the outer sleeve tube; when the low-temperature liquid oxygen is filled, the low-temperature liquid oxygen can flow into the outer sleeve through the low-temperature one-way valve; when the low-temperature liquid filling pipe is cut off after the low-temperature liquid oxygen is filled, the low-temperature one-way valve can prevent the low-temperature liquid oxygen in the outer sleeve tube from being sprayed out, so that the low-temperature liquid oxygen can be prevented from being sprayed out to injure people during pipe cutting, and the safety of the pipe cutting operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0027] Figure 1 It is a perspective view of the utility model embodiment;

[0028] Figure 2 It is a longitudinal sectional view of the utility model embodiment;

[0029] Figure 3 It is Figure 2 A part enlarged view of the utility model embodiment;

[0030] Figure 4 It is Figure 2 A part enlarged view of the utility model embodiment;

[0031] Figure 5 It is a schematic view of the columnar combustible material, the low-temperature liquid filling pipe and the ignition device of the utility model embodiment.

[0032] In the attached diagram, 100 - columnar combustible material; 110 - cloth tube; 120 - combustible material; 200 - cryogenic filling tube; 210 - cryogenic one-way valve; 300 - ignition device; 310 - lead wire; 320 - electronic fire starter; 400 - outer tube; 500 - tape; 600 - exhaust pipe; 700 - upper sealing assembly; 710 - first annular component; 720 - upper cover; 721 - pull ring part; 800 - lower sealing assembly; 810 - second annular component; 820 - lower cover. Detailed Implementation

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0034] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0035] like Figures 1-5 As shown, this utility model embodiment provides a low-temperature gas-filled energy storage rock fracturing and expansion device, including a columnar combustible material 100, a low-temperature liquid filling pipe 200 and an ignition device 300 arranged along the length direction of the columnar combustible material 100, and an outer sleeve 400 wrapped around the columnar combustible material 100, the low-temperature liquid filling pipe 200 and the ignition device 300.

[0036] Reference Figure 2 and Figure 5 In some embodiments, the columnar combustible material 100 includes a cloth tube 110 and combustible material 120 filled in the cloth tube 110, with both ends of the cloth tube 110 being tightly sealed by cable ties.

[0037] Optionally, the combustible material 120 is carbon powder.

[0038] Optionally, the columnar combustible material 100 is composed of multiple combustible material units connected in series. The cloth tubes 110 of adjacent combustible material units are tied together with cable ties. When in use, the corresponding number of combustible material units can be selected and connected according to the depth of the rock hole.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The leads 310 of the cryogenic filling tube 200 and the ignition device 300 extend from the upper end of the outer tube 400, respectively. A cryogenic check valve 210 is provided on the cryogenic filling tube 200 near the upper end of the outer tube 400 to allow liquid to flow into the outer tube 400 through the cryogenic filling tube 200.

[0040] Need to explain, low temperature one-way valve 210 is a kind of valve that can automatically prevent low temperature fluid backflow belongs to the prior art, its working principle is: low temperature fluid under the action of pressure makes the valve flap open, and flows from the inlet side to the outlet side, when the inlet side pressure is lower than the outlet side, the valve flap is automatically closed under the action of fluid pressure and its own gravity, preventing fluid backflow.

[0041] In some embodiments, referring to Figure 5 , the ignition device 300 includes a plurality of electronic fire heads 320 distributed along the length direction of the columnar combustible 100 and respectively electrically connected with the lead 310, the low temperature liquid filling pipe 200 and the lead 310 of the ignition device 300 are fixed outside the columnar combustible 100 by a plurality of adhesive tapes 500 distributed along the length direction, and each group of electronic fire heads 320 of the ignition device 300 is wrapped with the adhesive tape 500. The purpose of wrapping the electronic fire heads 320 with the adhesive tape 500 is to prevent the electronic fire heads 320 from being displaced or even damaged when the outer sleeve pipe 400 is sleeved.

[0042] In some embodiments, referring to Figure 1 、 Figure 2 and Figure 3 , the device further includes an exhaust pipe 600, one end of the exhaust pipe 600 extends into the outer sleeve pipe 400, and the other end of the exhaust pipe 600 extends out of the upper end of the outer sleeve pipe 400. By setting the exhaust pipe 600, when the low temperature liquid oxygen is filled into the outer sleeve pipe 400, the gas generated by the gasification of the low temperature liquid oxygen can be discharged out of the hole through the exhaust pipe 600, which can reduce the pressure in the hole.

[0043] In some embodiments, referring to Figure 3 , the device further includes an upper end sealing assembly 700, and the upper end sealing assembly 700 includes a first ring-shaped part 710 and an upper end cover 720.

[0044] The first ring-shaped part 710 is sleeved outside the outer sleeve pipe 400, and the outer surface of the first ring-shaped part 710 is provided with a first external thread. The upper end of the outer sleeve pipe 400 is outwardly folded and sleeved outside the first ring-shaped part 710 above the first external thread.

[0045] The upper end cover 720 has a first ring part and a first end part provided at one end of the first ring part. The inner wall of the first ring part away from the first end part is provided with a first internal thread. The upper end cover 720 is sleeved outside the first ring-shaped part 710, and the first internal thread in the first ring part of the upper end cover 720 cooperates with the first external thread outside the first ring-shaped part 710. The upper end of the first ring-shaped part 710 tightly abuts the outer sleeve pipe 400 inside the first end part of the upper end cover 720. The first end part of the upper end cover 720 is provided with holes for the low temperature liquid filling pipe 200, the lead 310 of the ignition device 300 and the exhaust pipe 600 to pass through.

[0046] When the upper end of the outer sleeve 400 is sealed, the first ring 710 is first sleeved on the outer sleeve 400 from the upper end, and the upper end of the outer sleeve 400 is folded outward to be sleeved on the first ring 710, and then the first ring 710 is screwed into the upper end cover 720, so that the upper end of the first ring 710 tightly presses the outer sleeve 400 inside the first end of the upper end cover 720, thereby ensuring that the upper end sealing assembly 700 and the outer sleeve 400 are firmly combined together.

[0047] Preferably, referring to Figure 1 The first end of the upper end cover 720 is provided with a pull ring 721, and when the device is lowered into the rock hole, the lowering rope can be sleeved on the pull ring 721, and the device is lowered into the rock hole through the lowering rope.

[0048] In some embodiments, referring to Figure 4 The device further comprises a lower end sealing assembly 800, and the lower end sealing assembly 800 comprises a second ring 810 and a lower end cover 820.

[0049] The second ring 810 is sleeved on the outer sleeve 400, and the outer sleeve 400 is provided with a second outer thread on the outside, and the lower end of the outer sleeve 400 is folded outward and sleeved on the second ring 810 below the second outer thread.

[0050] The lower end cover 820 has a second ring part and a second end part provided at one end of the second ring part, and the inner wall of the second ring part away from the second end part is provided with a second inner thread, the lower end cover 820 is sleeved on the second ring 810, and the second inner thread in the second ring part of the lower end cover 820 cooperates with the second outer thread on the outside of the second ring 810, and the second end part of the lower end cover 820 tightly presses the outer sleeve 400 on the lower end of the second ring 810.

[0051] When the lower end of the outer sleeve 400 is sealed, the second ring 810 is first sleeved on the outer sleeve 400 from the lower end, and the lower end of the outer sleeve 400 is folded outward to be sleeved on the second ring 810, and then the second ring 810 is screwed into the lower end cover 820, so that the lower end of the second ring 810 tightly presses the outer sleeve 400 inside the second end of the lower end cover 820, thereby ensuring that the lower end sealing assembly 800 and the outer sleeve 400 are firmly combined together.

[0052] Optionally, the outer sleeve 400 adopts a low-temperature-resistant PE water hose sleeve film.

[0053] When filling, the device needs to be put into the rock hole, and low-temperature liquid oxygen is injected into the outer sleeve pipe 400 of the device through the low-temperature liquid filling pipe 200, so that the low-temperature liquid oxygen is immersed into the columnar combustible 100, and after the low-temperature liquid oxygen is filled, the low-temperature liquid filling pipe 200 outside the rock hole is cut off. When blasting, the ignition device 300 ignites the columnar combustible 100, and after the columnar combustible 100 is ignited, the liquid oxygen can be rapidly vaporized and expanded, so as to realize the gas expansion and cracking of the rock.

[0054] The application sets the low-temperature one-way valve 210 on the low-temperature liquid filling pipe 200 close to the upper end of the outer sleeve pipe 400, when filling the low-temperature liquid oxygen, the low-temperature liquid oxygen can flow into the outer sleeve through the low-temperature one-way valve 210, when the low-temperature liquid filling pipe 200 is cut off after the low-temperature liquid oxygen is filled, the low-temperature one-way valve 210 can prevent the low-temperature liquid oxygen in the outer sleeve pipe 400 from being sprayed out, so that the low-temperature liquid oxygen can be prevented from being sprayed out to hurt people when cutting the pipe, and the safety of the pipe cutting operation is ensured.

[0055] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A low-temperature gas in-hole filling energy storage rock fracturing and swelling device, comprising: a columnar combustible, a low-temperature liquid filling tube and an ignition device arranged along the length direction of the columnar combustible, and an outer sleeve tube wrapping the columnar combustible, the low-temperature liquid filling tube and the ignition device, wherein the low-temperature liquid filling tube and the ignition device lead wire respectively extend from the upper end of the outer sleeve tube; characterized in that: a low-temperature one-way valve is arranged on the low-temperature liquid filling tube near the upper end of the outer sleeve tube to allow liquid to flow into the outer sleeve tube through the low-temperature liquid filling tube.

2. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 1, characterized in that: the columnar combustible comprises a cloth tube and combustible filled in the cloth tube, and the two ends of the cloth tube are tightly sealed by a tie.

3. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 2, characterized in that: the columnar combustible is composed of a plurality of combustible monomers connected in series, and the cloth tubes of adjacent combustible monomers are tightly bound by a tie.

4. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 1, characterized in that: the ignition device comprises a plurality of electronic fire starters distributed along the length direction of the columnar combustible and respectively electrically connected with the lead wire, the low-temperature liquid filling tube and the ignition device lead wire are fixed outside the columnar combustible by a plurality of adhesive tapes distributed along the length direction, and each group of electronic fire starters of the ignition device is wrapped with an adhesive tape.

5. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 1, characterized in that: it further comprises an exhaust pipe, one end of which extends into the outer sleeve tube, and the other end of which extends out of the upper end of the outer sleeve tube.

6. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 5, characterized in that: it further comprises an upper end sealing assembly, the upper end sealing assembly comprising: a first ring-shaped member, the first ring-shaped member being sleeved outside the outer sleeve tube, the outer surface of the first ring-shaped member being provided with a first external thread, and the upper end of the outer sleeve tube being folded outward and sleeved outside the first ring-shaped member above the first external thread; an upper end cover, the upper end cover having a first ring portion and a first end portion provided at one end of the first ring portion, the inner wall of the first ring portion being provided with a first internal thread away from the first end portion, the upper end cover being sleeved outside the first ring-shaped member, the first internal thread in the first ring portion of the upper end cover being matched with the first external thread outside the first ring-shaped member, the upper end of the first ring-shaped member being tightly pressed against the inner side of the first end portion of the upper end cover, and the first end portion of the upper end cover being provided with holes for the low-temperature liquid filling tube, the ignition device lead wire and the exhaust pipe to pass through.

7. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 6, characterized in that: the upper side of the first end portion of the upper end cover is provided with a pull ring portion.

8. The low-temperature gas in-hole filling energy storage rock fracturing and swelling device according to claim 1, characterized in that: it further comprises a lower end sealing assembly, the lower end sealing assembly comprising: A second ring member is sleeved outside the outer sleeve tube, and an outer second thread is arranged on the outside of the second ring member. The lower end of the outer sleeve tube is outwardly folded and sleeved outside the second ring member below the second thread. A lower end cover has a second ring portion and a second end portion arranged at one end of the second ring portion. An inner second thread is arranged on the inner wall of the second ring portion away from the second end portion. The lower end cover is sleeved outside the second ring member, and the inner second thread in the second ring portion of the lower end cover is matched with the outer second thread outside the second ring member. The second end portion of the lower end cover tightly presses the outer sleeve tube at the lower end of the second ring member.

9. The low-temperature gas hole-infilling energy rock fracturing expansion device according to claim 6 or 8, characterized in that: The outer sleeve tube is made of a low-temperature-resistant PE water belt sleeve film.

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