Special high-pressure spray head for small-angle inclined shaft

Abstract

The high-pressure sprayer special for the small-angle inclined shaft comprises a connecting base and a spraying pipe, the connecting base is installed at the bottom of a raise boring tool, the first end of the spraying pipe is fixedly connected with the connecting base, the second end of the spraying pipe is arranged towards the well wall and extends towards the well wall, and the second end of the spraying pipe is fixedly connected with the connecting base. The first end of the spray pipe is communicated with a central pipe fluid on the raise boring tool, a boring body supporting seat is fixedly connected to the bottom of the raise boring tool in the axial direction, and the maximum axial distance L2 between the spray pipe and the outer wall and the bottom of the raise boring tool is smaller than or equal to the axial length L1 of the boring body supporting seat. By the adoption of the spray pipe fixedly installed at the bottom of the raise boring tool, when slag slipping and hole blocking occur, the raise boring tool is lowered to the hole blocking position, a shaft is flushed through high-pressure water jet, the shaft dredging effect can be achieved, participation of other equipment and personnel is not needed, the working efficiency is improved, and meanwhile the safety coefficient can be greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of underground mine shaft construction, and is specifically a special high-pressure nozzle for small-angle inclined shafts. Background Art

[0002] During the drilling process of the raise drilling rig, the slag produced falls by its own weight. The steeper the slope of the inclined shaft, the faster the slag sliding speed, and the gentler the slope, the slower the slag sliding speed. Slag sliding is one of the difficulties in the construction of small-angle inclined shafts using raise drilling rigs. Small-angle inclined shafts will have unsatisfactory slag sliding effects and even hole blockage, which will seriously affect the construction progress and pose a major safety hazard. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to provide a special high-pressure nozzle for small-angle inclined wells, which can improve the slag sliding effect and solve the problem of slag sliding blocking the hole.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-pressure nozzle specially used for small-angle inclined wells, comprising a connecting seat and a nozzle, wherein the connecting seat is installed on the bottom of the reverse well drilling tool, the first end of the nozzle is fixedly connected to the connecting seat, the second end of the nozzle is arranged toward the well wall and extends toward the well wall, and the first end of the nozzle is fluidly connected to the center pipe on the reverse well drilling tool.

[0005] The above-mentioned high-pressure nozzle for small-angle inclined wells has a drill body support seat fixedly connected to the bottom of the reverse drilling tool along the axial direction, and the maximum axial distance L between the nozzle and the outer wall and the bottom of the reverse drilling tool is 2 Less than or equal to the axial length L of the drill body support seat 1 .

[0006] The above-mentioned high-pressure nozzle specially used for small-angle inclined wells, the first end of the nozzle is coaxially fixedly connected with the reverse well drilling tool.

[0007] In the above-mentioned high-pressure nozzle specially used for small-angle inclined wells, the radial distance from the second end of the nozzle to the axis of the reverse drilling tool is smaller than the radius of the reverse drilling tool.

[0008] The above-mentioned high-pressure nozzle specially used for small-angle inclined wells, the nozzle includes a connecting section and a water spraying section, the first end of the connecting section is fixedly connected to the connecting seat, the second end of the connecting section is fixedly connected and conducted with the first end of the water spraying section, the second end of the water spraying section is arranged toward the well wall, and the extension line of the axis of the connecting section intersects with the extension line of the axis of the water spraying section.

[0009] The above-mentioned high-pressure sprinkler specially used for small-angle inclined wells, the connecting section is coaxially arranged with the reverse drilling tool, the connecting section and the water spraying section are perpendicularly arranged to each other; the distance between the pipe wall of the water spraying section and the bottom of the reverse drilling tool is less than or equal to the length of the drill body support seat at the bottom of the reverse drilling tool; the distance from the second end of the water spraying section to the axis of the reverse drilling tool is less than the radius of the reverse drilling tool.

[0010] The above-mentioned high-pressure nozzle specially used for small-angle inclined wells has an outer diameter of 5 cm and a wall thickness of 5 mm.

[0011] The above-mentioned high-pressure sprinkler specially used for small-angle inclined wells has a water spray section with a length of 0.5 to 3.5 meters and a connecting section with a length of 20 centimeters.

[0012] The above-mentioned high-pressure sprinkler head specially used for small-angle inclined wells has a reinforcing rib fixedly connected to the second end of the water spraying section, and the other end of the reinforcing rib is fixedly connected to the bottom of the reverse well drilling tool.

[0013] The above-mentioned high-pressure nozzle specially used for small-angle inclined wells has a connecting flange fixedly connected between the connecting seat and the reverse drilling tool, and the connecting flange is fixedly connected to the reverse drilling tool by connecting bolts.

[0014] The technical solution of the utility model has achieved the following beneficial technical effects:

[0015] By adopting a nozzle fixedly installed at the bottom of the raise drilling tool, when slag blocking the hole occurs, the raise drilling tool is lowered to the blocking position, and the wellbore is flushed with high-pressure water jets, which can achieve the effect of unblocking the wellway without the participation of other equipment and personnel. While improving work efficiency, it can greatly improve the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 2 A schematic structural diagram of the nozzle of the utility model.

[0018] The reference numerals in the figure are as follows: 1-reverse drilling tool; 2-drill body support seat; 3-center pipe; 4-connecting flange; 5-connecting seat; 6-nozzle; 61-connecting section; 62-water spraying section; 7-reinforcement rib; 8-connecting bolt. DETAILED DESCRIPTION

[0019] In this embodiment, a high-pressure nozzle dedicated to a small angle inclined well is Figure 1-2As shown, it includes a connecting seat 5 and a nozzle 6, the connecting seat 5 is installed on the bottom of the raise drilling tool 1, a connecting flange 4 is fixedly connected between the connecting seat 5 and the raise drilling tool 1, the connecting flange 4 is fixedly connected to the raise drilling tool 1 through a connecting bolt 8, the first end of the nozzle 6 is fixedly connected to the connecting seat 5, the second end of the nozzle 6 is arranged toward the well wall and extends toward the well wall, and the first end of the nozzle 6 is fluidly connected to the center pipe 3 on the raise drilling tool 1.

[0020] like Figure 1 As shown, the bottom of the raise drilling tool 1 is axially fixedly connected to a drill body support seat 2, and the maximum axial distance L between the nozzle 6 and the outer wall and the bottom of the raise drilling tool 1 is 2 Less than or equal to the axial length L of the drill body support seat 2 1 The first end of the nozzle 6 is coaxially fixedly connected to the reverse drilling tool 1; the radial distance from the second end of the nozzle 6 to the axis of the reverse drilling tool 1 is smaller than the radius of the reverse drilling tool 1.

[0021] like Figure 1-2 As shown, the nozzle 6 includes a connecting section 61 and a water spraying section 62. The first end of the connecting section 61 is fixedly connected to the connecting seat 5, the second end of the connecting section 61 is fixedly connected and conducted to the first end of the water spraying section 62, the second end of the water spraying section 62 is arranged toward the well wall, and the extension line of the axis of the connecting section 61 and the extension line of the axis of the water spraying section 62 intersect. A reinforcing rib 7 is fixedly connected to the second end of the water spraying section 62, and the other end of the reinforcing rib 7 is fixedly connected to the bottom of the raise drilling tool 1. In the actual construction process, when the hole is blocked, the raise drilling tool 1 is lowered to the blocked hole, and a high-pressure water pump is connected to the upper part of the raise drilling rig drill pipe. The high-pressure water pump pumps clean water into the raise drilling rig drill pipe and inputs it into the central pipe 3 of the raise drilling tool 1, and then enters the nozzle 6 and is sprayed onto the well wall from the water spraying section 62. As the raise drilling tool 1 rotates, the well wall is cyclically sprayed and flushed, so that the rock debris can fall smoothly.

[0022] like Figure 1-2 As shown, the connecting section 61 is coaxially arranged with the raise drilling tool 1, and the connecting section 61 and the water spraying section 62 are perpendicularly arranged to each other; the distance between the pipe wall of the water spraying section 62 and the bottom of the raise drilling tool 1 is less than or equal to the length of the drill body support seat 2 on the bottom of the raise drilling tool 1; the distance from the second end of the water spraying section 62 to the axis of the raise drilling tool 1 is less than the radius of the raise drilling tool 1; in this embodiment, the outer diameter of the nozzle 6 is 5 cm and the wall thickness is 5 mm; the length of the water spraying section 62 is 0.5 to 3.5 meters, and the length of the connecting section 61 is 20 cm.

[0023] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. Special high-pressure nozzle for small-angle inclined wells, characterized by: The utility model comprises a connection seat (5) and a nozzle (6), wherein the connection seat (5) is installed on the bottom of the raise drilling tool (1), the first end of the nozzle (6) is fixedly connected to the connection seat (5), the second end of the nozzle (6) is arranged toward the well wall and extends toward the well wall, and the first end of the nozzle (6) is in fluid communication with the center pipe (3) on the raise drilling tool (1).

2. The high-pressure nozzle for small-angle inclined wells according to claim 1 is characterized in that: A drill body support seat (2) is axially fixedly connected to the bottom of the raise drilling tool (1), and a maximum axial distance L2 between the nozzle (6) and the outer wall and the bottom of the raise drilling tool (1) is less than or equal to an axial length L1 of the drill body support seat (2).

3. The high-pressure nozzle for small-angle inclined wells according to claim 1 is characterized in that: The first end of the nozzle (6) is coaxially fixedly connected to the raise drilling tool (1).

4. The high-pressure nozzle for small-angle inclined wells according to claim 3 is characterized in that: The radial distance from the second end of the nozzle (6) to the axis of the raise drilling tool (1) is smaller than the radius of the raise drilling tool (1).

5. The high-pressure nozzle for small-angle inclined wells according to any one of claims 1 to 4, characterized in that: The nozzle (6) comprises a connecting section (61) and a water spraying section (62), wherein the first end of the connecting section (61) is fixedly connected to the connecting seat (5), the second end of the connecting section (61) is fixedly connected to and communicates with the first end of the water spraying section (62), the second end of the water spraying section (62) is arranged toward the well wall, and the extension line of the axis of the connecting section (61) intersects with the extension line of the axis of the water spraying section (62).

6. The high-pressure nozzle for small-angle inclined wells according to claim 5 is characterized in that: The connecting section (61) is coaxially arranged with the reverse drilling tool (1); the connecting section (61) and the water spray section (62) are arranged perpendicular to each other; the distance between the pipe wall of the water spray section (62) and the bottom of the reverse drilling tool (1) is less than or equal to the length of the drill body support seat (2) at the bottom of the reverse drilling tool (1); and the distance between the second end of the water spray section (62) and the axis of the reverse drilling tool (1) is less than the radius of the reverse drilling tool (1).

7. The high-pressure nozzle for small-angle inclined wells according to claim 6 is characterized in that: The nozzle (6) has an outer diameter of 5 cm and a wall thickness of 5 mm.

8. The high-pressure nozzle for small-angle inclined wells according to claim 6, characterized in that: The length of the water spray section (62) is 0.5 to 3.5 meters, and the length of the connecting section (61) is 20 centimeters.

9. The high-pressure nozzle for small-angle inclined wells according to claim 6, characterized in that: A reinforcing rib (7) is fixedly connected to the second end of the water spray section (62), and the other end of the reinforcing rib (7) is fixedly connected to the bottom of the raise drilling tool (1).

10. The high-pressure nozzle for small-angle inclined wells according to claim 1, characterized in that: A connecting flange (4) is fixedly connected between the connecting seat (5) and the raise drilling tool (1), and the connecting flange (4) and the raise drilling tool (1) are fixedly connected via connecting bolts (8).

Images