CN220454410U

CN220454410U - Gas cracking tube set capable of being assembled quickly

Info

Publication number: CN220454410U
Application number: CN202322017967.8U
Authority: CN
Inventors: 徐贤篡; 韩立东; 徐贤銮; 肖义刚
Original assignee: Jiangxi Zhongfang Kuangsheng Engineering Equipment Co ltd
Current assignee: Jiangxi Zhongfang Kuangsheng Engineering Equipment Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-02-06
Anticipated expiration: 2033-07-31

Abstract

The utility model relates to the technical field of mining equipment and discloses a gas cracking tube set capable of being assembled quickly, which comprises an outer tube, wherein an inner tube is arranged in the outer tube, a pyrotechnic composition is arranged in the inner tube, end covers are fixedly connected to two ends of the outer tube, a threaded sleeve is fixedly connected to the middle part of one end cover, a nut interface is fixedly connected to the middle part of the other end cover, a wire is fixedly connected between the threaded sleeve and the nut interface, the wire penetrates through the inner tube and the pyrotechnic composition, a point-type electric fire head is arranged in the middle of the wire, and a sealing cover is connected to the periphery of the threaded sleeve in a threaded manner. According to the utility model, after pressurization is completed, the gas fracturing pipe sets can be directly taken down, a worker is not required to seal the joint, the use is simpler, the tightness of the joint between each pipe set can be maintained, and the gas fracturing pipe sets are more stable to use.

Description

Gas cracking tube set capable of being assembled quickly

Technical Field

The utility model relates to the technical field of mining equipment, in particular to a gas fracturing tube set capable of being assembled quickly.

Background

In the mining operation process of mines, the part of mountain needs to be blasted generally, the traditional explosive blasting mode has the characteristics of high operation difficulty, high potential safety hazard, high cost and the like, so constructors have extremely strict requirements during actual operation, the part of mountain is blasted more conveniently and rapidly for facilitating construction personnel to perform operation, the gas cracking pipe with high safety, simple structure and convenient use is adopted to become the first-choice equipment of the current mine blasting operation, and a plurality of gas cracking pipes can be connected in series to form a cracking pipe group for achieving the purpose of continuous blasting operation generally, so that the blasting efficiency is improved.

Patent number CN207406341U provides a low cost gas fracturing set. The gas fracturing tube group is formed by sequentially connecting a plurality of gas fracturing tubes in series through a metal communicating tube; each gas cracking tube comprises an outer tube, an inner tube, a detonation wire and an electro-ignition head; the outer tube is a pressure-resistant plastic tube, and metal connectors are connected to end covers at two ends of the outer tube in a penetrating way; the inner tube is a straight paper tube, a high-pressure igniting pyrotechnic composition is arranged in the inner tube, and two ends of the inner tube are respectively provided with a plug; the detonating lead penetrates through the inner tube, and two ends of the detonating lead respectively penetrate through the plug and are fixedly connected to the metal interface; the electric ignition head is arranged in the inner tube and is electrically connected with the detonation lead. The utility model adopts high-pressure air and the pyrotechnic composition to ignite and explode, and utilizes the strong and large thrust of gas to complete the explosion operation, and the pyrotechnic composition in the gas cracking pipe is not inflammable and explosive under normal pressure, so that the explosion is not easy to occur in the operation process, the safety in the operation process is greatly improved, and the smoke after the explosion has no harm to the environment. When the tube array in the document is used for adjusting the air pressure in the tube by inflation, the port needs to be closed after air is injected, the process is complex, workers need to use tools to close the port, the operation complexity is increased, and the gas fracturing tube array capable of being assembled quickly is provided.

Disclosure of Invention

In order to make up for the defects, the utility model provides a gas cracking tube set capable of being assembled quickly, and aims to solve the problem that the gas cracking tube set needs to be closed after air is injected, and the process is complex.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a but fast assembly's gaseous fracturing pipe group, includes the outer tube, outer tube internally mounted has the inner tube, the inside pyrotechnic composition that is provided with of inner tube, the equal fixedly connected with end cover in outer tube both ends, one of them end cover middle part fixedly connected with screw sleeve, another end cover middle part fixedly connected with nut interface, screw sleeve with fixedly connected with wire between the nut interface, the wire runs through the inner tube with pyrotechnic composition, wire mid-mounting has the ignition head, screw sleeve periphery threaded connection has sealed lid, the nut interface is kept away from one side threaded connection of outer tube has the inflation joint, the inside one side of inflation joint has seted up the through-hole, the inside piston that is provided with of through-hole, the inside opposite side fixedly connected with baffle of through-hole, the piston is close to one side fixedly connected with two locating levers of baffle, the piston with be provided with the spring between the baffle, a plurality of gas pockets have been seted up to the baffle inside.

As a further description of the above technical solution:

the periphery of the positioning rod is connected inside the baffle in a sliding way, and the point-actuation fire head is arranged inside the pyrotechnic composition.

As a further description of the above technical solution:

one end of the spring is fixedly connected to the middle of the piston, and the other end of the spring is fixedly connected to the middle of the baffle.

As a further description of the above technical solution:

the periphery of the threaded sleeve is in threaded connection with the inside of the nut connector, and two adjacent outer pipes are communicated through the threaded sleeve.

As a further description of the above technical solution:

the nut is characterized in that a collar is fixedly connected to the inner side of the nut interface, a first sealing ring is fixedly connected to one end of the threaded sleeve, a second sealing ring is slidably connected to one side of the inner side of the nut interface, a limiting ring is fixedly connected to one side, close to the collar, of the second sealing ring, and a pressure spring is fixedly connected to one side, far away from the second sealing ring, of the limiting ring.

As a further description of the above technical solution:

the inner side of the threaded sleeve is connected with the periphery of the clamping ring in a sliding mode, and the first sealing ring is attached to the clamping ring.

As a further description of the above technical solution:

the limiting ring is in sliding connection inside the nut interface, and one end, away from the limiting ring, of the pressure spring is fixedly connected with the inner wall of the nut interface.

The utility model has the following beneficial effects:

1. according to the utility model, through the cooperation of the inflation joint, the through hole, the piston, the positioning rod, the baffle, the sealing cover, the spring and the air hole, the gas cracking tube set can be directly taken down after the inflation reaches the standard of the internal air pressure, and a worker is not required to seal the joint, so that the gas cracking tube set is simpler to use.

2. According to the utility model, through the cooperation of the threaded sleeve, the nut interface, the first sealing ring, the clamping ring, the second sealing ring, the pressure spring and the limiting ring, the gas fracturing pipe group can keep the tightness of the joint between each pipe group, the pressure in the pipe is prevented from changing, and the gas fracturing pipe group is more stable to use.

Drawings

FIG. 1 is a perspective view of a rapidly assemblable gas fracturing stack in accordance with the present utility model;

FIG. 2 is an exploded view of a rapidly assemblable gas fracturing stack in accordance with the present utility model;

FIG. 3 is a schematic view of the internal structure of a casing of a rapidly assembled gas fracturing pipe set according to the present utility model;

FIG. 4 is a schematic view of the internal structure of an inflatable joint of a gas-cracking tube set capable of being assembled quickly according to the present utility model;

fig. 5 is a cross-sectional view of a nut interface of a gas fracturing stack capable of being assembled quickly according to the present utility model.

Legend description:

1. an outer tube; 2. an inner tube; 3. a pyrotechnic agent; 4. an end cap; 5. a threaded sleeve; 6. a nut interface; 7. a wire; 8. sealing cover; 9. an inflation joint; 10. a through hole; 11. a piston; 12. a positioning rod; 13. a baffle; 14. a spring; 15. air holes; 16. a first seal ring; 17. a collar; 18. a second seal ring; 19. a pressure spring; 20. a limiting ring; 21. and igniting the electric fire head.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, one embodiment provided by the present utility model is: the gas fracturing pipe group capable of being assembled rapidly comprises an outer pipe 1, an inner pipe 2 is arranged in the outer pipe 1, the outer pipe 1 is made of high-pressure-resistant plastic, the stability of the pipe group can be kept when the inside of the pipe group is pressurized, meanwhile, the cost of the pipe group is reduced, and the inner pipe 2 is made of paper. The inner tube 2 is internally provided with the pyrotechnic composition 3, and the pyrotechnic composition 3 can be ignited only in a high-pressure environment and cannot be ignited in a normal state, so that the stability of the gas fracturing tube set is improved, and the occurrence of potential safety hazards is prevented. The outer tube 1 both ends all fixedly connected with end cover 4, and one of them end cover 4 middle part fixedly connected with screw sleeve 5, another end cover 4 middle part fixedly connected with nut interface 6, single gas cause the split tube can be through screw sleeve 5 and nut interface 6 between fixed establish ties into the nest of tubes, also guarantee the stability of the nest of tubes after the equipment when convenient equipment. When the gas-cracking tube is used, the gas-cracking tube can be inflated and pressurized only by respectively installing the sealing cover 8 and the inflation connector 9 on the threaded sleeve 5 and the nut connector 6, and then the gas-cracking tube is connected with a switch device through the extended lead 7, so that the ignition point ignition fire head 21 is started to ignite the pyrotechnic composition 3. Fixedly connected with wire 7 between screw sleeve 5 and the nut interface 6, wire 7 runs through inner tube 2 and pyrotechnic composition 3, wire 7 mid-mounting has some electric fire head 21, electric connection between some electric fire head 21 and the wire 7, wire 7 extends the outside of nest of tubes to be connected with switchgear, the workman only need with wire 7 circular telegram alright start some electric fire head 21 work, when the nest of tubes state simultaneously, communicate through screw sleeve 5 and the nut interface 6 of copper material between the wire 7, guarantee that some electric fire head 21 in the nest of tubes can realize starting under the cooperation of multiunit wire 7. The screw sleeve 5 periphery threaded connection has sealed lid 8, and one side threaded connection that the outer tube 1 was kept away from to nut interface 6 has inflation joint 9, and the inner structure of sealed lid 8 is the same with nut interface 6, and inflation joint 9 inside one side has seted up through-hole 10, and through-hole 10 inside is provided with piston 11. After the gas fracturing pipe group is assembled, the sealing cover 8 is arranged on the threaded sleeve 5 at the tail end of the pipe group to form a closed structure, and meanwhile, a worker installs the gas charging connector 9 inside the nut interface 6 at the head section of the pipe group. The inflation device is then activated to inject air into the interior of the outer tube 1 by abutting the inflation connector 9 with the inflation device tubing. The spaces in the tube set are communicated through the hollow threaded sleeve 5, and the pressure inside the tube set is kept consistent. As the inflator operates, high pressure air enters the through hole 10 inside the inflation connector 9 and pushes the piston 11 to move, disengaging between the piston 11 and the through hole 10, and the piston 11 compresses the spring 14. The other side of the inside of the through hole 10 is fixedly connected with a baffle 13, one side of the piston 11, which is close to the baffle 13, is fixedly connected with two positioning rods 12, a spring 14 is arranged between the piston 11 and the baffle 13, and a plurality of air holes 15 are formed in the baffle 13. The high-pressure air enters the interior of the air charge joint 9 from the gap between the piston 11 and the through hole 10 at this time, and passes through the air hole 15 into the space inside the tube group. When the proper pressure is reached inside the tube set, the inflation device is stopped. At this time, the piston 11 is quickly restored under the pressure in the pipe and the action of the spring 14, contacts the inner wall of the through hole 10, and closes the through hole 10. Avoiding the unbalance of the pressure in the tube group, ensuring the stability of the pressure in the tube group and ensuring that the pyrotechnic composition 3 can be ignited smoothly.

The outer circumference of the positioning rod 12 is slidably connected inside the baffle 13. The positioning rod 12 is used for positioning the piston 11, so that the situation that the piston 11 cannot be aligned with the through hole 10 to form a seal is avoided. The ignition fire head 21 is arranged inside the pyrotechnic composition 3, and when the pressure in the tube group is increased by the inflation equipment, the ignition fire head 21 can be started to ignite the pyrotechnic composition 3, so that the purpose of blasting operation is realized.

One end of the spring 14 is fixedly connected to the middle of the piston 11, and the other end of the spring 14 is fixedly connected to the middle of the baffle 13. The piston 11 is tightly propped against by the spring 14, so that the piston 11 can be tightly contacted with the inside of the through hole 10, the inside of the inflation connector 9 is sealed, the air pressure imbalance in the pipe group is avoided, and the ignition of the pyrotechnic composition 3 after the ignition of the ignition fire head 21 is caused to be unable to perform blasting operation.

The periphery of the threaded sleeve 5 is in threaded connection with the inside of the nut interface 6, and when a plurality of gas cracking pipes are spliced to form a pipe group, the gas cracking pipe group can be assembled quickly and conveniently by connecting the threaded sleeve 5 at the head and the tail of the plurality of cracking pipes with the nut interface 6. The two adjacent outer tubes 1 are internally communicated through the threaded sleeve 5, so that the inner parts of each outer tube 1 of the tube group can be communicated through the threaded sleeve 5, and then the inner pressure of the tube group can be balanced when the tube group is pressurized.

The inner side of the nut interface 6 is fixedly connected with a clamping ring 17, one end of the threaded sleeve 5 is fixedly connected with a first sealing ring 16, one side of the interior of the nut interface 6 is slidably connected with a second sealing ring 18, one side of the second sealing ring 18, which is close to the clamping ring 17, is fixedly connected with a limiting ring 20, and one side, which is far away from the second sealing ring 18, of the limiting ring 20 is fixedly connected with a pressure spring 19. When the gas cracking tube is connected, a worker fixes the threaded sleeve 5 at one end of the gas cracking tube set and the nut interface 6 of the other gas cracking tube together through threads, when the threaded sleeve 5 is completely fastened into the nut interface 6, the threaded sleeve 5 pushes the first sealing ring 16 to be clamped between the clamping ring 17 and the nut interface 6 to form a first-layer sealing structure, meanwhile, the nut interface 6 is also contacted with the side face of the end cover 4 connected with the threaded sleeve 5, the second sealing ring 18 extending out of the side face of the nut interface 6 is contacted with the side face of the adjacent end cover 4, at the moment, the first sealing ring 16 is extruded by the end cover 4 and pushes the limiting ring 20 to compress the pressure spring 19, and through the interaction of forces, the pressure spring 19 can push the second sealing ring 18 tightly, so that the side faces of the second sealing ring 18 and the end cover 4 are in more unbalanced contact, the sealing structure of the second layer is formed, the tightness of the inside of the gas cracking tube is improved, and the pressure in the tube is avoided.

The inner side of the threaded sleeve 5 is slidably connected to the periphery of the clamping ring 17, the threaded sleeve 5 is clamped with the outer side of the clamping ring 17, the first sealing ring 16 at one end of the threaded sleeve 5 can be inserted into a gap between the clamping ring 17 and the nut interface 6, and then the first sealing ring 16 is used for sealing between the threaded sleeve 5 and the nut interface 6. The first sealing ring 16 is attached to the clamping ring 17, and the sealing environment is formed between the clamping ring 17 and the nut interface 6 through the tight attachment of the first sealing ring 16 and the outer wall of the clamping ring 17.

The limiting ring 20 is in sliding connection inside the nut interface 6, the limiting ring 20 is used for limiting the second sealing ring 18, the fact that the pressure spring 19 pushes the second sealing ring 18 out of the nut interface 6 is avoided, one end, away from the limiting ring 20, of the pressure spring 19 is fixedly connected to the inner wall of the nut interface 6, the pressure spring 19 abuts against the inner wall of the nut interface 6, the limiting ring 20 is pushed, and the fact that the sealing performance of the pipe group can be greatly improved during assembly is guaranteed.

Working principle: when the gas cracking tube is connected, a worker fixes the threaded sleeve 5 at one end of the gas cracking tube set and the nut interface 6 of the other gas cracking tube together through threads, when the threaded sleeve 5 is completely fastened into the nut interface 6, the threaded sleeve 5 pushes the first sealing ring 16 to be clamped between the clamping ring 17 and the nut interface 6 to form a first-layer sealing structure, meanwhile, the nut interface 6 is also contacted with the side face of the end cover 4 connected with the threaded sleeve 5, the second sealing ring 18 extending out of the side face of the nut interface 6 is contacted with the side face of the adjacent end cover 4, at the moment, the first sealing ring 16 is extruded by the end cover 4 and pushes the limiting ring 20 to compress the pressure spring 19, and through the interaction of forces, the pressure spring 19 can push the second sealing ring 18 tightly, so that the side faces of the second sealing ring 18 and the end cover 4 are in more unbalanced contact, the sealing structure of the second layer is formed, the tightness of the inside of the gas cracking tube is improved, and the pressure in the tube is avoided. After the gas fracturing pipe group is assembled, the sealing cover 8 is arranged on the threaded sleeve 5 at the tail end of the pipe group to form a closed structure, and meanwhile, a worker installs the gas charging connector 9 inside the nut interface 6 at the head section of the pipe group. The inflation device is then activated to inject air into the interior of the outer tube 1 by abutting the inflation connector 9 with the inflation device tubing. The spaces in the tube set are communicated through the hollow threaded sleeve 5, and the pressure inside the tube set is kept consistent. As the inflator operates, high pressure air enters the through hole 10 inside the inflation connector 9 and pushes the piston 11 to move, disengaging between the piston 11 and the through hole 10, and the piston 11 compresses the spring 14. The high-pressure air enters the interior of the air charge joint 9 from the gap between the piston 11 and the through hole 10 at this time, and passes through the air hole 15 into the space inside the tube group. When the proper pressure is reached inside the tube set, the inflation device is stopped. At this time, the piston 11 is quickly restored under the pressure in the pipe and the action of the spring 14, contacts the inner wall of the through hole 10, and closes the through hole 10. Avoiding the unbalance of the pressure in the tube group, ensuring the stability of the pressure in the tube group and ensuring that the pyrotechnic composition 3 can be ignited smoothly.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. Rapidly assembled gas cracking tube group, including outer tube (1), its characterized in that: the inner tube (2) is arranged in the outer tube (1), the pyrotechnic composition (3) is arranged in the inner tube (2), the end caps (4) are fixedly connected to the two ends of the outer tube (1), one end cap (4) is fixedly connected with the threaded sleeve (5), the other end cap (4) is fixedly connected with the nut interface (6) in the middle, the wire (7) penetrates through the inner tube (2) and the pyrotechnic composition (3), the middle of the wire (7) is provided with the ignition head (21), the threaded sleeve (5) is connected with the sealing cover (8) in a threaded manner, one side of the nut interface (6) far away from the outer tube (1) is connected with the air charging connector (9) in a threaded manner, one side of the inner side of the air charging connector (9) is provided with the through hole (10), the piston (11) is arranged in the inner side of the through hole (10), the other side of the through hole (10) is fixedly connected with the baffle (13), one side of the piston (11) is close to one side of the baffle (13) and is provided with the positioning rod (14) between the two pistons (13), a plurality of air holes (15) are formed in the baffle plate (13).

2. The rapidly assemblable gas fracturing stack of claim 1, wherein: the periphery of the positioning rod (12) is slidably connected inside the baffle plate (13), and the point-actuation electric fire head (21) is installed inside the pyrotechnic composition (3).

3. The rapidly assemblable gas fracturing stack of claim 1, wherein: one end of the spring (14) is fixedly connected to the middle of the piston (11), and the other end of the spring (14) is fixedly connected to the middle of the baffle (13).

4. The rapidly assemblable gas fracturing stack of claim 1, wherein: the periphery of the threaded sleeve (5) is in threaded connection with the inside of the nut interface (6), and two adjacent outer pipes (1) are communicated through the threaded sleeve (5).

5. The rapidly assemblable gas fracturing stack of claim 1, wherein: the nut is characterized in that a clamping ring (17) is fixedly connected to the inner side of the nut interface (6), a first sealing ring (16) is fixedly connected to one end of the threaded sleeve (5), a second sealing ring (18) is slidably connected to one side of the inner portion of the nut interface (6), a limiting ring (20) is fixedly connected to one side, close to the clamping ring (17), of the second sealing ring (18), and a pressure spring (19) is fixedly connected to one side, far away from the second sealing ring (18), of the limiting ring (20).

6. The rapidly assemblable gas fracturing stack of claim 5, wherein: the inner side of the threaded sleeve (5) is connected with the periphery of the clamping ring (17) in a sliding mode, and the first sealing ring (16) is attached to the clamping ring (17).

7. The rapidly assemblable gas fracturing stack of claim 5, wherein: the limiting ring (20) is slidably connected inside the nut interface (6), and one end, away from the limiting ring (20), of the pressure spring (19) is fixedly connected to the inner wall of the nut interface (6).