A pressure measuring pipe dredging device for hydraulic detection

Abstract

The utility model discloses a kind of pressure measuring tube dredging devices for hydraulic detection, including mounting sleeve, the one end of mounting sleeve is connected with inlet pipe, the middle part of mounting sleeve is rotatably connected with dredging drill, and the one end of dredging drill extends to mounting sleeve outside and forms drill bit;The dredging drill includes connecting piece rotatably connected in mounting sleeve, the middle part of connecting piece forms first flow channel, and the periphery of connecting piece is distributed with several helical second flow channels, and the end of connecting piece is fixedly connected drill bit, drill bit forms water outlet groove in the one end close to connecting piece, and the end of water outlet groove is interconnected with first flow channel and second flow channel, and the periphery of water outlet groove is equipped with the flow guide pipe of connecting drill bit, and the middle part of flow guide pipe forms the third flow channel of intercommunication water outlet groove.The utility model can break and remove the silt in pressure measuring tube.

Description

Technical Field

[0001] This utility model relates to a pressure measuring tube dredging device, and more particularly to a pressure measuring tube dredging device for hydraulic engineering testing. Background Technology

[0002] In the operation and management of water conservancy projects, real-time monitoring is essential to ensure the safe operation and use of hydraulic structures. Piezometric monitoring is a crucial component of this process, commonly used to monitor groundwater levels, dam phreatic lines, pore water pressure, seepage around dams, dam foundation seepage pressure, uplift pressure in concrete dams, and external water pressure in tunnels and culverts. However, during routine management and use, external factors often cause small stones, silt, and other debris to fall into the piezometric tubes, leading to blockages and affecting their normal operation. Therefore, operators need to regularly remove blockages from the piezometric tubes to ensure the stability of their monitoring capabilities.

[0003] Based on the above, the piezometers used in water conservancy projects have small diameters and are buried at great depths, typically with an inner diameter of 50–100 mm and a depth of 20–80 m. This makes it difficult for conventional electric drills to effectively clean the piezometers. Under these limitations, manufacturers generally use high-pressure water to impact the blockages inside the piezometers. However, this method is not ideal, often resulting in excessively hardened blockages that cannot be completely broken up, increasing the difficulty of dredging for workers.

[0004] Therefore, a device is needed that can break up and remove blockages inside the pressure measuring tube. Utility Model Content

[0005] The purpose of this invention is to provide a dredging device for pressure testing pipes in hydraulic engineering projects. It can break up and remove blockages inside the pressure testing pipe.

[0006] The technical solution of this utility model is as follows: A dredging device for a pressure measuring pipe used in hydraulic engineering testing includes an installation sleeve, one end of which is connected to a water inlet pipe, and a dredging drill is connected to the middle of the installation sleeve. The dredging drill includes an outer tube fixedly connected inside the installation sleeve, an inner tube rotatably connected to the inner side of the outer tube, a first flow channel forming in the middle of the inner tube, and several spiral second flow channels distributed around the gap between the inner and outer tubes. A drill bit is drivenly connected to the lower end of the inner tube, and the drill bit is rotatably connected to the bottom of the outer tube. A water outlet groove is formed at the end of the drill bit near the inner tube. The end of the water outlet groove is connected to the first and second flow channels. Multiple guide pipes connected to the drill bit are provided around the water outlet groove, and a third flow channel connecting the water outlet groove is formed in the middle of the guide pipes.

[0007] In the aforementioned hydraulic testing pressure pipe dredging device, the guide pipe extends outward in a spiral shape along the radial direction of the drill bit, and the guide pipe is used to apply circumferential rotational force to the drill bit under the drive of high-pressure water flow.

[0008] In the aforementioned hydraulic testing pressure tube dredging device, the guide tube gradually tilts upward along the extension direction, and the guide tube is used to apply an axial downward squeezing force to the drill bit under the drive of high-pressure water flow.

[0009] In the aforementioned hydraulic testing pressure tube dredging device, multiple spiral arc rods are distributed around the outer wall of the inner tube, and a second flow channel is formed between adjacent spiral arc rods. The spiral arc rods are used to apply circumferential rotational force to the inner tube under the drive of high-pressure water flow.

[0010] In the aforementioned hydraulic testing pressure tube dredging device, multiple transmission plates are distributed in the water outlet tank. The lower end of the transmission plate is fixedly connected to the bottom surface of the water outlet tank, and the top of the transmission plate overlaps with and fits against the spiral arc rod.

[0011] In the aforementioned hydraulic testing pressure pipe dredging device, the outer wall of the drill bit is provided with multiple spiral grooves.

[0012] Compared with the prior art, this utility model has the following characteristics: (1) This utility model, through the cooperation of the first flow channel, the second flow channel, the outlet tank and the third flow channel, enables high-pressure water to enter the outlet tank through the first flow channel and the second flow channel respectively after entering from the inlet pipe, and then flow out through the third flow channel; when the high-pressure water passes through the spiral second flow channel, it can drive the inner tube to rotate, and the inner tube, after rotating, drives the drill bit to rotate synchronously through the cooperation of the spiral arc rod and the transmission plate, thereby using the drill bit to drill and break the blockage in the pressure measuring tube, improving its breaking and clearing function; on this basis, through the spiral outward extending guide pipe, the high-pressure water can be sprayed outward from the third flow channel to apply circumferential rotational force to the drill bit, further promoting the rotation of the drill bit and ensuring the stability of the drill bit's action during drilling; (2) By gradually tilting the guide pipe upward along the extension direction, the high-pressure water can apply an axial downward squeezing force to the drill bit when it is sprayed out, thereby driving the drill bit to squeeze towards the blockage, which improves the drilling effect on the blockage; after the high-pressure water is sprayed out from the guide pipe, it can also wash the inner wall of the pressure measuring tube, which prevents the mud from adhering to the inner wall of the pressure measuring tube after it is broken, thus improving the cleaning effect on the pressure measuring tube. Therefore, this invention can break up and remove blockages inside the pressure measuring tube. Attached Figure Description

[0013] Figure 1 These are the external views of Embodiment 1 and Embodiment 2; Figure 2 This is a cross-sectional view of Example 1; Figure 3These are cross-sectional views of the connection between the outer tube and the inner tube in Examples 1 and 2; Figure 4 This is a cross-sectional view of Example 2.

[0014] The markings in the attached diagram are as follows: 1-installation sleeve, 2-inlet pipe, 3-outer pipe, 4-first flow channel, 5-second flow channel, 6-drill bit, 7-outlet trough, 8-guide pipe, 9-third flow channel, 10-inner pipe, 11-transmission plate, 101-spiral arc rod. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0016] Example 1. A hydraulic testing dredging device for pressure testing pipes, comprising the following components: Figure 1-3 As shown, the device includes an installation sleeve 1, one end of which is connected to a water inlet pipe 2, and a dredging drill is connected to the middle of the installation sleeve 1. The dredging drill includes an outer tube 3 fixedly connected inside the installation sleeve 1, an inner tube 10 rotatably connected to the inner side of the outer tube 3, a first flow channel 4 formed in the middle of the inner tube 10, and several spiral second flow channels 5 distributed around the gap between the inner tube 10 and the outer tube 3. The lower end of the inner tube 10 extends to the outside of the outer tube 3 and is connected to a drill bit 6. The drill bit 6 is rotatably connected to the bottom of the outer tube 3. A water outlet groove 7 is formed at the end of the drill bit 6 near the inner tube 10. The end of the water outlet groove 7 is connected to the first flow channel 4 and the second flow channels 5. Several guide pipes 8 connected to the drill bit 6 are provided around the water outlet groove 7. A third flow channel 9 connected to the water outlet groove 7 is formed in the middle of the guide pipes 8.

[0017] The guide pipe 8 extends outward in a spiral shape along the radial direction of the drill bit 6. The guide pipe 8 is used to apply circumferential rotational force to the drill bit 6 under the drive of high-pressure water flow.

[0018] The guide pipe 8 gradually tilts upward along the extension direction. The guide pipe 8 is used to apply axial downward squeezing force to the cleaning drill bit 6 under the drive of high pressure water flow.

[0019] The bottom of the outer tube 3 forms an annular groove, and the top of the drill bit 6 is connected to the groove via an annular fastener.

[0020] Multiple spiral arc rods 101 are distributed around the outer wall of the inner tube 10, and a second flow channel 5 is formed between adjacent spiral arc rods 101. The outer wall of the spiral arc rod 101 is in contact with the inner wall of the outer tube 3. The spiral arc rod 101 is used to apply circumferential rotational force to the inner tube 10 under the drive of high pressure water flow.

[0021] Multiple transmission plates 11 are distributed inside the water outlet trough 7. The lower end of the transmission plate 11 is fixedly connected to the bottom surface of the water outlet trough 7, and the top of the transmission plate 11 partially overlaps with and fits against the spiral arc rod 101.

[0022] The outer wall of the drill bit 6 has multiple spiral grooves distributed around it.

[0023] In this embodiment, the operator places the dredging drill into the pressure testing pipe and sends high-pressure water into the drill through the inlet pipe 2. After entering the drill, part of the high-pressure water flows into the outlet tank 7 through the first flow channel 4, and the other part flows into the outlet tank 7 through the second flow channel 5. When the high-pressure water flows through the second flow channel 5, the spiral-shaped second flow channel 5 enables the high-pressure water to drive the inner tube 10 to rotate during the flow. The inner tube 10, through the cooperation of the spiral arc rod 101 and the transmission plate 11, drives the drill bit 6 to rotate synchronously, thereby drilling and breaking up the blockage in the pressure testing pipe.

[0024] After entering the outlet tank 7, the high-pressure water is sprayed outward from the third flow channel 9 of the surrounding guide pipes 8. This spraying force applies a circumferential rotational force to the drill bit 6, promoting its rotational breaking effect. Furthermore, because the high-pressure water is sprayed at an upward angle along the axis of the dredging drill, it also applies a downward squeezing force to the drill bit 6, causing it to drill inward and further breaking up the blockage. The high-pressure water also flushes the inner walls of the pressure measuring pipe after spraying, preventing sludge from adhering to the inner wall and improving the cleaning effect.

[0025] With the above-mentioned combination, this embodiment can break up and remove the blockage in the pressure measuring tube by drilling, which effectively improves the removal effect of blockage compared with the existing method of direct flushing with high-pressure water.

[0026] Example 2. A hydraulic testing dredging device for pressure testing pipes, comprising the following components: Figure 1 , 3 As shown in Figure 4, the device includes an installation sleeve 1, one end of which is connected to a water inlet pipe 2, and a dredging drill is connected to the middle of the installation sleeve 1. The dredging drill includes an outer tube 3 fixedly connected inside the installation sleeve 1, an inner tube 10 rotatably connected to the inner side of the outer tube 3, a first flow channel 4 formed in the middle of the inner tube 10, and several spiral second flow channels 5 distributed around the gap between the inner tube 10 and the outer tube 3. The lower end of the inner tube 10 extends to the outside of the outer tube 3 and is connected to a drill bit 6. The drill bit 6 is rotatably connected to the bottom of the outer tube 3. A water outlet groove 7 is formed at the end of the drill bit 6 near the inner tube 10. The end of the water outlet groove 7 is connected to the first flow channel 4 and the second flow channels 5. Several guide pipes 8 connected to the drill bit 6 are provided around the water outlet groove 7. A third flow channel 9 connected to the water outlet groove 7 is formed in the middle of the guide pipes 8.

[0027] The guide pipe 8 extends outward in a spiral shape along the radial direction of the drill bit 6. The guide pipe 8 is used to apply circumferential rotational force to the drill bit 6 under the drive of high-pressure water flow.

[0028] The guide pipe 8 gradually tilts upward along the extension direction. The guide pipe 8 is used to apply axial downward squeezing force to the cleaning drill bit 6 under the drive of high pressure water flow.

[0029] The bottom of the outer tube 3 forms an annular groove, and the top of the drill bit 6 is connected to the groove via an annular fastener.

[0030] Multiple spiral arc rods 101 are distributed around the outer wall of the inner tube 10, and a second flow channel 5 is formed between adjacent spiral arc rods 101. The outer wall of the spiral arc rod 101 is in contact with the inner wall of the outer tube 3. The spiral arc rod 101 is used to apply circumferential rotational force to the inner tube 10 under the drive of high pressure water flow.

[0031] The lower end of the inner tube 10 extends into the water outlet trough 7 and is fastened to the drill bit 6 via the transmission plate 11. The drill bit 6 and the transmission plate 11 form a transmission connection through the fastening part, so that the inner tube 10 and the drill bit 6 rotate synchronously. The cross-sectional shape of the transmission plate 11 is arc-shaped, and an opening for water flow is provided on one side of the transmission plate 11.

[0032] The outer wall of the drill bit 6 has multiple spiral grooves distributed around it.

[0033] Compared with Embodiment 1, this embodiment achieves the same transmission connection between the inner tube 10 and the drill bit 6 by directly fastening the lower end of the inner tube 10 to the drill bit 6 via the transmission plate 11, which is convenient for manufacturers to process.

Claims

1. A hydraulic testing and dredging device for pressure testing pipes, characterized in that: The device includes an installation sleeve (1), one end of which is connected to a water inlet pipe (2), and a dredging drill is connected to the middle of the installation sleeve (1). The dredging drill includes an outer tube (3) fixedly connected inside the installation sleeve (1), an inner tube (10) rotatably connected to the inner side of the outer tube (3), a first flow channel (4) formed in the middle of the inner tube (10), several spiral second flow channels (5) distributed around the gap between the inner tube (10) and the outer tube (3), a drill bit (6) drivenly connected to the lower end of the inner tube (10), the drill bit (6) rotatably connected to the bottom of the outer tube (3), and a water outlet groove (7) formed at the end of the drill bit (6) near the inner tube (10). The end of the water outlet groove (7) is connected to the first flow channel (4) and the second flow channel (5). Several guide pipes (8) connected to the drill bit (6) are provided around the water outlet groove (7), and a third flow channel (9) connected to the water outlet groove (7) is formed in the middle of the guide pipe (8).

2. The hydraulic testing dredging device according to claim 1, characterized in that: The guide tube (8) extends outward in a spiral shape along the radial direction of the drill bit (6), and the guide tube (8) is used to apply circumferential rotational force to the drill bit (6) under the drive of high-pressure water flow.

3. The hydraulic testing and dredging device for hydraulic engineering as described in claim 1, characterized in that: The guide pipe (8) gradually tilts upward along the extension direction. The guide pipe (8) is used to apply an axial downward squeezing force to the drill bit (6) under the drive of high pressure water flow.

4. The hydraulic testing and dredging device for hydraulic engineering as described in claim 1, characterized in that: The outer wall of the inner tube (10) is provided with a plurality of spiral arc rods (101), and a second flow channel (5) is formed between adjacent spiral arc rods (101). The spiral arc rods (101) are used to apply circumferential rotational force to the inner tube (10) under the drive of high pressure water flow.

5. A hydraulic testing pipe dredging device according to claim 4, characterized in that: Multiple transmission plates (11) are distributed inside the water outlet trough (7). The lower end of the transmission plate (11) is fixedly connected to the bottom surface of the water outlet trough (7). The top of the transmission plate (11) partially overlaps with and fits against the spiral arc rod (101).

6. The hydraulic testing dredging device according to claim 1, characterized in that: The outer wall of the drill bit (6) has multiple spiral grooves distributed around it.

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