一种用于盾构隧道堵漏的双液浆喷射钻杆

Abstract

本实用新型属于机械工程技术领域，尤其涉及一种用于盾构隧道堵漏的双液浆喷射钻杆；包括钻杆本体和喷射口；钻杆本体包括中空内通道和中空外通道，中空外通道套设在中空内通道外侧；喷射组件包括第一高压喷管和第二高压喷管，第一、第二高压喷管设置在喷射口内，第一高压喷管与中空内通道相连通，第二高压喷管与中空外通道相连通；第一、第二高压喷管内部设有连接管，连接管设有多个出水叶片，连接管上设有用于调节出水叶片收缩调节组件。第一、第二高压喷管喷出的两种浆液，在脱离喷管后能快速交汇、碰撞，从而在隧道渗漏部位附近完成充分混合。本实用新型提供一种能够改变喷射浆液孔径大小的用于盾构隧道堵漏的双液浆喷射钻杆。

Claims

1. A double slurry jetting drill pipe for shield tunnel leakage plugging, comprising a drill pipe body (1) and a jetting port (2), characterized in that ； The drill pipe body (1) includes a hollow inner channel (3) and a hollow outer channel (4), the hollow outer channel (4) being sleeved on the outside of the hollow inner channel (3); there are multiple injection ports (2), which are respectively disposed on the hollow outer channel (4) and the hollow inner channel (3) and are connected to the hollow inner channel (3) and the hollow outer channel (4); an injection assembly (5) is provided inside the injection port (2); The spray assembly (5) includes a first high-pressure nozzle (51) and a second high-pressure nozzle (52). The first and second high-pressure nozzles (52) are disposed inside the spray port (2), and the first high-pressure nozzle (51) is connected to the hollow inner channel (3), and the second high-pressure nozzle (52) is connected to the hollow outer channel (4). The first and second high-pressure nozzles (52) are provided with a connecting pipe (53). The spray end of the connecting pipe (53) is provided with multiple water-discharging blades (54). The water-discharging blades (54) are located inside the spray end of the first and second high-pressure nozzles (52), and the multiple water-discharging blades (54) are evenly spaced along the circumferential direction of the connecting pipe (53). The first and second high-pressure nozzles (52) are provided with a baffle (55). The baffle (55) is located at the liquid inlet end of the connecting pipe (53). The connecting pipe (53) is provided with a regulating assembly (6) for adjusting the contraction of the water-discharging blades (54).

2. The double slurry jetting drill rod for plugging shield tunnel according to claim 1, characterized in that, The adjustment component (6) includes: The outer ring (61) is located on the outside of the connecting pipe (53); A fixing frame (62) is provided on the outer ring (61), and the number of fixing frames (62) is the same as the number of water outlet blades (54); A connecting shaft (63) is mounted on the fixing frame (62); A rotating sleeve (64) is rotatably mounted on the connecting shaft (63); A connecting frame (65) is provided on the outside of the water outlet blade (54); A fixed shaft (66) is mounted on the connecting frame (65); A rotating sleeve (67) is rotatably mounted on the fixed shaft (66); A pull rod (68) is fixedly disposed between the rotating sleeve (64) and the rotating sleeve (67); The first hinge ball (69) is hinged to the spray end face of the connecting pipe (53); A connector (610) is disposed at the bottom of the water outlet blade (54), and the connector (610) is connected to the first hinge ball (69); A power assembly (7), located on a connecting pipe (53), is used to provide power to drive the outer ring (61) to operate.

3. The double slurry jetting drill rod for plugging shield tunnel according to claim 2, characterized in that, The power assembly (7) includes: A bracket (71) is disposed on the outside of the connecting pipe (53); A rotating shaft (72) is rotatably mounted on the bracket (71); Connecting plates (73) are disposed at both ends of the rotating shaft (72); A cylinder (74) is disposed between the two connecting plates (73) on the same side; The second hinge ball (75) is disposed on the piston rod of the cylinder (74), and the second hinge ball (75) is hinged to the outer ring (61).

4. The double slurry jet drill rod for plugging a shield tunnel according to claim 1, wherein, The first and second high-pressure nozzles (52) are inclined, and the inclination angles of the first and second high-pressure nozzles (52) are in the direction of mutual approach.

5. The double slurry jetting drill rod for plugging a shield tunnel according to claim 1, wherein, The drill rod body (1) is provided with a drill bit (8) at the bottom. The drill bit (8) is provided with a grouting chamber. There are two grouting chambers, namely a first grouting chamber (9) and a second grouting chamber (10). The first grouting chamber (9) is connected to the hollow inner channel (3), and the second grouting chamber (10) is connected to the hollow outer channel (4). The injection port (2) is provided on the first and second grouting chambers (10). The first and second high-pressure nozzles (52) are installed in the injection port (2) through the movable connecting assembly (11) and pass through the drill bit (8).

6. The double slurry jetting drill rod for plugging a shield tunnel according to claim 5, wherein, The movable connection assembly (11) includes an external thread (111) and an internal thread (112). The external thread (111) is located outside the first and second high-pressure nozzles (52), and the internal thread (112) is located inside the nozzle (2). The external thread (111) and the internal thread (112) are threadedly engaged.

7. The double slurry jetting drill rod for plugging a shield tunnel according to claim 5, wherein, The drill bit (8) is provided with a spiral drill bit (12) along its outer length direction.

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