A shaped charge hole sealing device

Abstract

The utility model belongs to the field of blasthole plugging, specifically relates to a shaped charge blasting hole sealing device, including claw bag plugging ware, the claw bag plugging ware includes the clamp that can be set in blasthole, with the lining tube that is wrapped in the clamp, the bag that is fixed between the clamp and the lining tube and a plurality of clamping claws fixed on the clamp, when the bag is blown up by blast gas, the clamping claw can prop up in blasthole and limit the clamp to move in blasthole. The utility model discloses claw bag plugging ware is installed in the hole sealing through the clamping claw limiting, and the bag is inflated and expands to the close blasthole wall with blast gas, reaches the purpose of plugging blasthole, intercepts blast gas, and its structure is simple, and the cost is low, and the expansion degree of clamping claw can be automatically adjusted according to the size of blasthole, is suitable for a variety of diameter blasthole, the utility model is used simultaneously with the sealing mud, is fixed before and after explosion, is not easy to loosen, can reduce the influence of blast gas to sealing mud.

Description

Technical Field

[0001] This utility model belongs to the field of borehole sealing technology, specifically relating to a shaped charge blasting borehole sealing device. Background Technology

[0002] To improve blasting quality and efficiency, sealing mud and other materials are stuffed into the outer end of the blast hole to increase resistance, allowing energy to accumulate inside the hole and increasing the impact force of the shock wave. This also reduces the amount of blasting gas ejected, minimizing the impact on the construction site environment. The sealing mud is a paste-like material, and its preparation and filling process is complex and time-consuming. If the sealing mud is not properly sealed, it can easily protrude from the blast hole under the impact of the explosion, reducing blasting efficiency. Traditional sealing methods may suffer from problems such as insecure sealing and poor airtightness, leading to energy loss and affecting the blasting effect.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a shaped charge blasting sealing device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shaped charge blasting borehole sealing device includes a claw bag plugger. The claw bag plugger includes a clamp that can be installed inside the borehole, a liner wrapped inside the clamp, a bag with its opening fixed between the clamp and the liner, and several claws fixed to the clamp. When installed inside the borehole, the opening of the bag faces the inner end of the borehole. When the bag is inflated by the blasting gas, the claws can support the clamp inside the borehole and restrict its movement within the borehole.

[0007] The clamp can have various structures. In one embodiment, the clamp includes a first mating block, a second mating block, a locking element, and a first body with elasticity in the shape of a C. Let the two ends of the side of the first body be the first side end and the second side end, respectively. The first mating block is fixed on the first side end, the second mating block is fixed on the second side end, and the first and second mating blocks are staggered along the axial direction. Both the first and second mating blocks are provided with mating holes that pass through along the axial direction. The mating holes pass through axially after the clamp is installed on the bushing. The first and second mating blocks are connected by a locking element provided in the mating holes.

[0008] In another embodiment, the clamp includes a C-shaped second body, a mating plate fixed to the side of the second body, and a locking member for connecting the mating plates on both sides of the second body.

[0009] In another embodiment, the clamp includes a clamp seat, a strip, and a locking bolt threaded to the clamp seat. One end of the strip is fixed to the clamp seat, and the other end of the strip wraps around the liner and is fixed to the locking bolt.

[0010] Furthermore, the pouch includes a neck with an opening at one end and a belly connected to the other end of the neck; the outer surface of the belly is provided with several protrusions.

[0011] There are two main installation methods for the pouch. The first method is to clamp the neck between the clamp and the liner. The second method is to fix a thick ring with a thickness greater than the thickness of the neck to the open end of the neck. The thick ring is clamped between the clamp and the liner.

[0012] The clamping claw has multiple installation methods. In one embodiment, a first claw root plate is provided at the root of the clamping claw, and the first claw root plate is fixed to the outer surface of the clamp. In another embodiment, a second claw root plate is provided at the root of the clamping claw, and the second claw root plate is provided on the inner surface of the clamp.

[0013] Furthermore, in order to facilitate pushing the claw bag plug into the borehole to a specified depth without damaging the borehole wall, the shaped charge blasting sealing device also includes an auxiliary component, which includes an outer cylinder and a pusher cylinder; the outer surface of the outer cylinder is provided with alignment marks; the outer diameter of the outer cylinder is smaller than the inner diameter of the borehole; the outer diameter of the pusher cylinder is smaller than the inner diameter of the outer cylinder.

[0014] The beneficial effects of this utility model are:

[0015] The claw bag sealing device of this utility model is installed in the sealing hole by limiting the claw. The bag is automatically inflated and expanded by the explosive gas to stick tightly to the wall of the blast hole, so as to block the blast hole and intercept the explosive gas. Its structure is simple and low cost. The outward expansion of the claw can be automatically adjusted according to the size of the blast hole, and it is suitable for blast holes of various diameters.

[0016] This utility model is used in conjunction with sealing mud, and is fixed before and after the explosion, making it less prone to loosening, which can reduce the impact of explosive gases on the sealing mud;

[0017] The auxiliary components have a simple structure and are easy to use, enabling the claw bag plugger to be quickly and conveniently installed in the designated position inside the borehole. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0019] Figure 1 This is a schematic diagram of the claw bag sealing device according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the pouch in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the clamp structure according to one embodiment of the present utility model.

[0022] Figure 4 This is a schematic diagram of the clamp structure according to another embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the auxiliary component in an embodiment of the present utility model.

[0024] Figure 6 This is a schematic diagram showing the claw bag sealing device of this utility model in use.

[0025] Figure 7 This is a schematic diagram of the inflated state structure of the claw bag sealing device according to an embodiment of the present invention.

[0026] In the diagram: 1-Clamping clamp, 2-Outer cylinder, 21-Push cylinder, 3-Liner, 4-Docking hole, 5-Bag, 51-Body, 52-Neck, 53-Thick ring, 54-Protrusion, 6-Claw, 61-First claw root plate, 62-Second claw root plate, 71-First docking block, 72-Second docking block, 8-Docking plate, 9-Detonator, 10-Charging tube, 11-Fuse, 12-Blast hole, 13-Emulsion explosive, 14-Sealing mud. Detailed Implementation

[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0028] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0030] like Figures 1 to 7 As shown, a shaped charge blasting sealing device includes a claw bag plugger. The claw bag plugger includes a clamp 1 that can be installed inside the blast hole 12, a liner 3 wrapped inside the clamp 1, a bag 5 with its opening fixed between the clamp 1 and the liner 3, and several claws 6 fixed to the clamp 1. When the claw bag plugger is installed inside the blast hole 12, the opening of the bag 5 faces the inner end of the blast hole 12, facing the explosive gas. The claws 6 support the blast hole 12, fixing the position of the clamp 1. After detonation, the explosive gas enters the bag 5, and the bag 5 is inflated by the explosive gas, sealing the blast hole 12, while reducing the escape of the explosive gas and the impact on the sealing mud 15. The movement is restricted by the claws 6. Due to the limiting effect of the claws 6, the position of the clamp remains fixed before and after detonation.

[0031] The clamp 1 is used to secure the pouch 5 to the liner 3; for easy installation, the clamp 1 is detachable or has an adjustable diameter. The clamp 1 can have various structures, and its material can be plastic or alloy; the clamp 1 and the liner 3 are fitted together by a sleeve or thread. In one embodiment, such as... Figure 1 , Figure 3 As shown, the clamp 1 includes a first mating block 71, a second mating block 72, a locking element, and a first body with elasticity in the shape of a C. The two ends of the first body are designated as the first side end and the second side end, respectively. The first mating block 71 is fixed to the first side end, and the second mating block 72 is fixed to the second side end, with the first and second mating blocks 71 and 72 staggered along the axial direction. Both the first and second mating blocks 71 and 72 are provided with mating holes 4 that extend along the axial direction. The position of the mating holes 4 is adjusted according to the thickness of the neck 52, so that the mating holes 4 extend axially after the clamp 1 is installed on the neck 52 of the bushing 3, allowing the locking element to pass through the mating holes 4 of the first and second mating blocks 71 and 72, connecting the first and second mating blocks 71 and 72 into a whole. The locking element can be a binding strap, bolt and nut, binding wire, rivet, nail, etc.

[0032] In another embodiment, such as Figure 4As shown, the clamp 1 includes a C-shaped second body, a mating plate 8 fixed to the side of the second body, and a locking member for connecting the mating plates 8 on both sides of the second body; the length of the inner wall of the C-shaped second body is not greater than the circumference of the liner 3, and there is a gap between the two mating plates 8 after the second body is installed on the liner 3, which can accommodate the installation of bags 5 of various thicknesses; corresponding holes are opened on the two mating plates 8 so that the locking member can pass through and connect the two mating plates 8; in this embodiment, the locking member can be a binding strap, binding wire, bolt and nut, rivet, etc.

[0033] In another embodiment, such as Figure 5 , Figure 7 As shown, the clamp 1 includes a clamp seat, a strip, and a locking bolt threaded to the clamp seat. One end of the strip is fixed to the clamp seat, and the other end of the strip wraps around the bushing 3 and is fixed to the locking bolt. The shape formed by the strip is close to an O-shape or a Q-shape. The size of the shape formed by the strip is adjusted by turning the locking bolt. The structure of the clamp 1 in this embodiment is similar to the mini hose clamp in the prior art. The clamp 1 can also adopt the mini hose clamp structure in the prior art.

[0034] Furthermore, considering the impact force of the explosion, the airbag 5 is made of high-strength explosion-proof fiber fabric, which can be either airtight or airtight, such as elastic rubber bags, parachute fabric bags, pulse bag materials (e.g., polyester needle-punched felt, nylon filter bags, meta-Tass, polypropylene filter bags, PPS filter bags, P84 filter bags, and PTFE filter bags), and airbag materials (e.g., nylon fabric, polyamide fabric, thermoplastic polyurethane, polyamide 66, PET polyester). Figure 1 , Figure 2 As shown, the bag 5 includes a neck 52 with an opening at one end and a belly 51 connected to the other end of the neck 52. The neck 52 is fitted onto the liner 3 and held tightly by the clamp 1. The outer surface of the belly 51 is provided with several elastic protrusions 54 to increase the friction between the bag 5 and the wall of the borehole 12, and to increase the difficulty for the bag 5 to move to the outer end of the borehole 12 after it is inflated. The elastic protrusions 54 can be rubber protrusions 54 or rubber dots.

[0035] like Figure 2 As shown, the open end of the neck 52 is fixed with a thick ring 53, the thickness of which is greater than the thickness of the neck 52. The minimum thickness or minimum diameter of the thick ring 53 is greater than the gap between the clamp 1 and the liner 3. Figure 1 As shown, in the first method of installing the pouch 5, the thick ring portion 53 is clamped between the clamp 1 and the liner 3. Figure 5 , Figure 7 As shown, in the second method of installing the bag 5, the neck 52 is clamped between the clamp 1 and the liner 3, and the thick ring 53 is exposed. The blocking effect of the thick ring 53 can prevent the bag 5 from coming out of the clamp 1 and the liner 3 after being subjected to the impact force of the exploding gas.

[0036] The claw 6 is an alloy elastic sheet, which naturally expands outward when not subjected to external force; the claw 6 can be installed in various ways, such as in one embodiment. Figure 1 , Figure 3 , Figure 4 As shown, a first claw root plate 61 is provided at the root of the claw 6, and the first claw root plate 61 is welded or glued to the outer surface of the clamp 1; the claw 6 and the first claw root plate 61 form a V-shaped spring piece; in another embodiment, as Figure 5 , Figure 7 As shown, a second claw root plate 62 is provided at the root of the claw 6. The second claw root plate 62 is welded or glued to the inner surface of the clamp 1, or clamped and fixed by the clamp 1 and the bushing 3.

[0037] Furthermore, such as Figure 5 , Figure 7 As shown, in order to facilitate pushing the claw bag plug into the borehole 12 to a specified depth without damaging the borehole 12 wall, the shaped charge blasting sealing device also includes an auxiliary component, which includes an outer cylinder 2 and a pusher cylinder 21. The outer surface of the outer cylinder 2 is provided with alignment marks, which can be a certain insertion position marked as needed, or a scale arranged axially on the outer cylinder 2. The outer diameter of the outer cylinder 2 is smaller than the inner diameter of the borehole 12. The outer diameter of the pusher cylinder 21 is smaller than the inner diameter of the outer cylinder 2. The pusher cylinder 21 can be used to directly contact the claw bag plug, or a sealing plate can be fixed at the inner end of the pusher cylinder 21 and used to contact the claw bag plug.

[0038] In use, the claw-bag sealing device is first inserted into the outer cylinder 2 from one end, and the bag 5 can be inserted into the liner 3 to avoid scratching. Then, the pusher 21 is used to push the claw-bag sealing device to the other end of the outer cylinder 2, and the claws 6 are confined in the outer cylinder 2. Then, the outer cylinder 2 containing the claw-bag sealing device is extended into the blast hole 12 to a specified distance, and the pusher 21 is used to push the claw-bag sealing device out of the outer cylinder 2 into the blast hole 12. The claws 6 are released from the confinement of the outer cylinder 2 and open up in the blast hole 12, supporting the claw-bag sealing device in the blast hole 12. When the blast occurs, the explosive gas is rapidly generated and fills the bag 5. The bag 5 expands rapidly under the action of the gas, intercepting or slowing down the explosive gas. This invention can effectively reduce the leakage of explosive gas, improve blasting efficiency, and reduce the impact of explosive gas on the sealing mud 15.

[0039] In a charge structure example, such as Figure 6 As shown, the length of the borehole 12 is 12m. Inside the borehole 12, from the inside to the outside, the shaped charge tube 10, the claw bag plugger and the sealing mud are arranged in sequence. The length of the sealing mud is 1.5m. The distance between the inner end of the clamp 1 of the claw bag plugger and the outer end of the borehole is 2m. The shaped charge tube 10 is filled with emulsion explosive 13, detonator 9 and fuse 11. The fuse 11 passes through the sealing mud 15 to the outside of the borehole 12. Figure 7This is a schematic diagram of the state of the bag 5 of the claw bag plugger inside the borehole 12 after detonation. The bag 5 bulges up and presses against the wall of the borehole 12 to seal the borehole 12.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A shaped charge blasting sealing device, characterized in that: The device includes a claw bag plugger, which includes a clamp (1) that can be set in the borehole (12), a liner (3) that cooperates with the clamp (1), a bag (5) with its opening fixed between the clamp (1) and the liner (3), and several claws (6) fixed on the clamp (1); when the bag (5) is inflated by the explosive gas, the claws (6) can support the clamp (12) in the borehole (12) to restrict the clamp (1) from moving in the borehole (12).

2. The shaped charge blasting sealing device according to claim 1, characterized in that: The clamp (1) includes a first docking block (71), a second docking block (72), a locking member, and a first body with elastic C-shape. Let the two ends of the side of the first body be the first side end and the second side end, respectively. The first docking block (71) is fixed on the first side end, and the second docking block (72) is fixed on the second side end. The first docking block (71) and the second docking block (72) are offset along the axial direction. The first docking block (71) and the second docking block (72) are both provided with docking holes (4) that pass through along the axial direction. The docking holes (4) pass through along the axial direction after the clamp (1) is installed on the bushing (3). The first docking block (71) and the second docking block (72) are connected by the locking member provided in the docking hole (4).

3. The shaped charge blasting sealing device according to claim 1, characterized in that: The clamp (1) includes a C-shaped second body, a mating plate (8) fixed to the side of the second body, and a locking member for connecting the mating plates (8) on both sides of the second body.

4. The shaped charge blasting sealing device according to claim 1, characterized in that: The clamp (1) includes a clamp seat, a strip and a locking bolt threaded to the clamp seat. One end of the strip is fixed to the clamp seat, and the other end of the strip wraps around the liner (3) and is fixed to the locking bolt.

5. The shaped charge blasting sealing device according to claim 1, characterized in that: The pouch (5) includes a neck (52) with an opening at one end and a belly (51) connected to the other end of the neck (52); the outer surface of the belly (51) is provided with a number of protrusions (54).

6. The shaped charge blasting sealing device according to claim 5, characterized in that: The neck (52) is clamped between the clamp (1) and the liner (3).

7. The shaped charge blasting sealing device according to claim 5, characterized in that: The neck (52) has an open end fixed with a thick ring (53) that is thicker than the neck (52); the thick ring (53) is clamped between the clamp (1) and the liner (3).

8. The shaped charge blasting sealing device according to claim 1, characterized in that: The root of the claw (6) is provided with a first claw root plate (61), which is fixed to the outer surface of the clamp (1).

9. The shaped charge blasting sealing device according to claim 1, characterized in that: The root of the claw (6) is provided with a second claw root plate (62), which is located on the inner surface of the clamp (1).

10. The shaped charge blasting sealing device according to claim 1, characterized in that: The shaped charge blasting sealing device also includes an auxiliary component, which includes an outer cylinder (2) and a pusher (21) that can extend into the outer cylinder (2).

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