Pipeline pressure tapping device

Abstract

The utility model relates to the technical field of pipeline tapping equipment, and discloses a pipeline pressure tapping device which comprises a pipeline tapping machine, and the bottom of the pipeline tapping machine is movably connected with a positioning support. The positioning support comprises an upper clamping plate and a lower clamping plate, a connecting screw is arranged between the two clamping plates in a penetrating mode, and a locking nut is arranged at the end, located on the outer side of the corresponding clamping plate, of each connecting screw. A supporting rod parallel to the axis of the pipeline is adjustably arranged on the connecting screw rod, two supporting plates capable of being rotationally adjusted are arranged on the supporting rod in a sliding mode, a positioning pin is arranged on each supporting plate in a sliding mode, and each positioning pin can be pulled downwards to be adjusted to the position not higher than the corresponding supporting plate; the auxiliary supporting device can provide auxiliary supporting for the flange short pipe when the flange short pipe is installed, the welding effect can be improved, excessive intervention of workers in the welding process can be reduced, and therefore potential safety hazards faced by the workers in the working process are reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipe tapping equipment technology, and in particular to a pipe tapping device under pressure. Background Technology

[0002] In existing technologies, when performing live tapping on pipelines, a flanged short pipe is first installed on the pipeline requiring tapping. After pressure testing, a branch gate valve is installed, and finally, a pipe tapping machine is installed on the branch gate valve to perform the tapping operation. Since the flanged short pipe is fixedly welded to the outer wall of the pipeline requiring tapping, it needs to be positioned and supported during welding to ensure welding effectiveness. However, existing live tapping equipment lacks a structure for temporary positioning and support of the flanged short pipe, requiring multiple people to operate. This manual operation not only makes it difficult to guarantee positioning effectiveness but also increases the risk of burns from molten metal and oxides splashing onto workers. Therefore, there is an urgent need for a live tapping device that can provide auxiliary positioning for the installation of flanged short pipes. Utility Model Content

[0003] The purpose of this invention is to provide a pipe pressurized tapping device that can provide auxiliary support during the installation of flange short pipes, thereby improving the welding effect and reducing excessive worker intervention during the welding process, thus reducing the safety hazards faced by workers during the work process.

[0004] The present invention adopts the following technical solution:

[0005] A pipe tapping device includes a pipe tapping machine, the bottom of which is movably connected to a positioning bracket. The positioning bracket includes upper and lower clamping plates, with a connecting screw threaded between the two clamping plates. Each connecting screw has a locking nut at one end located on the outer side of the clamping plate. An adjustable support rod parallel to the pipe axis is mounted on the connecting screw. Two rotatable and adjustable support plates are slidably mounted on the support rod. A positioning pin is slidably mounted on each support plate, and each positioning pin can be pulled down to a position no higher than that of the support plate.

[0006] Preferably, the clamping plate includes a central V-shaped clamping portion, and horizontal connecting portions are provided on both sides of the V-shaped clamping portion; the connecting screw passes through the horizontal connecting portions.

[0007] Preferably, the inner wall of the clamping plate is provided with a rubber gasket.

[0008] Preferably, a movable seat is slidably disposed on the connecting screw, and the support rod is disposed on the movable seat; a first locking sleeve is threaded onto the connecting screw on both the upper and lower sides of the movable seat.

[0009] Preferably, the movable seat is provided on both of the two connecting screws on the same side, and the support rod passes through the movable seat.

[0010] Preferably, the support rod is provided with external threads, and each of the two movable seats is provided with a second locking sleeve that is threadedly connected to the support rod at the ends that are far apart from each other.

[0011] Preferably, a slider is provided on the support rod, and the support plate is rotatably mounted on the slider; a third locking sleeve is threadedly connected to the support rod at both ends of the slider.

[0012] Preferably, the support plate has an adjustment groove along its length, a sleeve is slidably disposed in the adjustment groove, the top end of the sleeve does not protrude from the adjustment groove, and the positioning pin is elastically disposed in the sleeve. In the initial state, the top end of the positioning pin protrudes from the sleeve and is located above the support plate.

[0013] Preferably, the bottom of the positioning pin is provided with a positioning cap, and in the initial state, the positioning cap is in close contact with the bottom of the support plate.

[0014] Preferably, the end face of the positioning cap that contacts the support plate is provided with interlocking positioning teeth.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the setting of two clamping plates, can fix the positioning bracket to the outside of the pipe to be drilled; then, adjusting the distance between the two support plates allows the positioning pins on them to pass through the connecting holes on the flange of the flange short pipe from the bottom of the flange, thus positioning the flange short pipe; simultaneously, the contact between the support plate and the bottom surface of the flange of the flange short pipe provides support for the flange short pipe, ensuring its stability and facilitating the welding of its bottom to the pipe to be drilled, reducing manual intervention and thus avoiding potential hazards to workers; furthermore, the support rod is adjustablely set on the connecting screw, allowing the height of the support plate to be adjusted so that the flange short pipe located on it makes close contact with the pipe to be drilled, facilitating the welding operation.

[0016] The rotating support plate and the pull-down adjustment of the positioning pin allow the support plate to be removed from under the flange of the flange short pipe in a timely manner after welding, so as not to affect subsequent operations and enhance the practicality of this utility model. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure of the mounting bracket in an embodiment of this application;

[0019] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0020] Figure 4 This is a schematic diagram of the positioning pin in an embodiment of this application. Detailed Implementation

[0021] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0022] like Figures 1 to 3 As shown, the present invention discloses a pipe tapping device under pressure, comprising a pipe tapping machine 1, with a positioning bracket movably connected to the bottom of the pipe tapping machine 1; the positioning bracket includes two clamping plates 2, forming a clamping space between the two clamping plates 2 for the pipe to be tapped, and a connecting screw 3 movably passing through the two clamping plates 2, each connecting screw 3 having a locking nut 4 at one end located outside the clamping plate 2, which can be fixed to the outside of the pipe to be tapped by rotating the locking nut 4; a support rod 5 parallel to the axis of the pipe to be tapped is provided on the connecting screw 3, and the support rod 5 can be adjusted up and down along the axis of the connecting screw 3; two rotatable and adjustable support plates 6 are slidably provided on the support rod 5, and a positioning pin 7 is slidably provided on each support plate 6, initially inserted into the mounting hole on the bottom flange of the pipe tapping machine 1 to achieve a movable connection between the pipe tapping machine 1 and the mounting bracket; wherein each positioning pin 7 can be pulled down and adjusted to a position not higher than the support plate 6. During operation, rotate and adjust the position of the support plate 6 so that it is below the upper flange of the flange short pipe to be installed. Then, pass the positioning pin 7 through the mounting hole on the flange to complete the positioning support of the flange pipe. At this time, the specific position of the flange short pipe and the pipe to be drilled can be matched by sliding the support plate 6 or adjusting the support rod 5 up and down. Then, the welding operation between the flange short pipe and the pipe to be drilled can be carried out. Due to the support of the mounting bracket, no manual intervention is required to assist in the positioning of the flange short pipe, which ensures the welding effect and eliminates installation hazards. After the flange short pipe is welded, pull down the positioning pin 7 to move it out of the mounting hole in the upper flange of the flange short pipe, and control the positioning pin 7 to move down so that it is below the top surface of the support plate 6. Then, rotate the support plate 6 to remove the support plate 6 from the flange short pipe to avoid obstructing the subsequent drilling operation.

[0023] In this embodiment, the clamping plate 2 includes a central V-shaped clamping portion, with horizontal connecting portions on both sides of the V-shaped clamping portion; the connecting screw 3 passes through the horizontal connecting portions. The optimized design of the V-shaped clamping portion can meet the stable clamping operation of pipes of various diameters, expanding the applicability of this utility model; preferably, a rubber gasket is provided on the inner wall of the clamping plate 2 to improve the tightness of the contact between the clamping plate 2 and the pipe, while reducing wear on the outer wall of the pipe.

[0024] Furthermore, in this embodiment, a movable seat 8 is provided on the connecting screw 3. The movable seat 8 can slide and adjust along the axial direction of the connecting screw 3, and the support rod 5 is provided on the movable seat 8. First locking sleeves 9 are threaded on the connecting screws 3 on both the upper and lower sides of the movable seat 8 to fix the movable seat 8 in place. Preferably, movable seats 8 are provided on both connecting screws 3 on the same side, and the support rod 5 passes through the movable seat 8 to increase the fulcrum of the support rod 5 and ensure the stability of the support rod 5. The support rod 5 is provided with external threads, and the ends of the two movable seats 8 that are far apart from each other are provided with second locking sleeves 10 that are threaded to the support rod 5 to limit the position of the support rod 5 in the horizontal direction and ensure the stability of the support rod 5 during operation. In addition, a slider 11 is also provided on the support rod 5, and the support plate 6 is rotatably mounted on the slider 11. Third locking sleeves 12 are threaded on the support rods 5 at both ends of each slider 11 to position the adjusted slider 11.

[0025] Furthermore, an adjustment groove 13 is formed along the length of the support plate 6. A sleeve 14, which extends vertically through the adjustment groove 13, is slidably disposed within the adjustment groove 13. Guide blocks are provided on both sides of the sleeve 14, and a guide groove 15 is formed on the inner wall of the adjustment groove 13 for the guide blocks to slide. The top of the sleeve 14 does not protrude from the adjustment groove 13. The positioning pin 7 is elastically disposed within the sleeve 14 by a spring 16. In the initial state, the top of the positioning pin 7 protrudes from the sleeve 14 and is positioned above the support plate 6. After the flange short pipe is welded, the positioning pin 7 can be pulled down to enter the sleeve 14, releasing the restriction on the upper flange of the flange short pipe. Then, the support plate 6 can be rotated to move the support plate 6 from below the flange. In addition, as... Figure 4As shown, a positioning cap 17 is provided at the bottom of the positioning pin 7. The top circumference of the positioning cap 17 extends upward to form a cylindrical structure, and the bottom of the positioning pin 7 is located inside this cylindrical structure. In the initial state, the cylindrical structure at the top of the positioning cap 17 is in close contact with the bottom of the support plate 6. Preferably, the end face of the positioning cap 17 that contacts the support plate 6 is provided with interlocking positioning teeth 18 to further improve the stability of the positioning pin 7 during use. When it is necessary to move and adjust the positioning pin 7, pull down the positioning cap 17 to disengage the positioning teeth 18, and then slide the positioning pin 7 along the opening direction of the adjustment groove 13. After adjustment, release the positioning cap 17, and the positioning pin 7 returns to its original position under the restoring force of the spring 16. The positioning cap 17 and the bottom of the support plate 6 are engaged by the positioning teeth 18.

[0026] In use, the pipe drilling machine 1 is first removed from the mounting bracket, and the clamping plate 2 is installed. The clamping plate 2 is then installed at the designated position on the pipe to be drilled. Next, the flange on the flange short pipe is connected to the positioning pin 7, and the positions of the support plate 6 and the support rod 5 are adjusted so that the bottom of the flange short pipe contacts the wall of the pipe to be drilled. Welding can then be performed. After welding is completed, the positioning pin 7 is pulled down, and the support plate 6 is removed from under the flange. Then, a branch gate valve is installed on the flange short pipe, and the pipe drilling machine 1 is connected to the flange on the branch gate valve. Drilling is then performed. After drilling is completed, the branch gate valve is closed, and the pipe drilling machine 1 is removed for connecting a straight pipe.

Claims

1. A device for opening a pipe under pressure comprising a pipe opening machine, characterized in that: The bottom of the pipe drilling machine is movably connected to a positioning bracket; the positioning bracket includes two clamping plates, upper and lower, with a connecting screw passing between the two clamping plates, and a locking nut is provided at one end of each connecting screw located on the outside of the clamping plate; a support rod parallel to the pipe axis is adjustablely provided on the connecting screw, and two rotatable and adjustable support plates are slidably provided on the support rod, with a positioning pin slidably provided on each support plate, wherein each positioning pin can be pulled down and adjusted to a position not higher than the support plate.

2. The apparatus of claim 1, wherein: The clamping plate includes a central V-shaped clamping portion, and horizontal connecting portions are provided on both sides of the V-shaped clamping portion; the connecting screw passes through the horizontal connecting portions.

3. The apparatus of claim 2, wherein: The inner wall of the clamping plate is provided with rubber gaskets.

4. The apparatus of claim 1, wherein: A movable seat is slidably disposed on the connecting screw, and the support rod is disposed on the movable seat; a first locking sleeve is threaded on the connecting screw on both the upper and lower sides of the movable seat.

5. The apparatus of claim 4, wherein: The movable seat is provided on both of the connecting screws on the same side, and the support rod passes through the movable seat.

6. The apparatus of claim 5, wherein: The support rod is provided with external threads, and each of the two movable seats is provided with a second locking sleeve that is threadedly connected to the support rod at one end.

7. The apparatus of claim 6, wherein: The support rod is provided with a slider, and the support plate is rotatably mounted on the slider; both ends of the slider are threaded with a third locking sleeve.

8. The apparatus of claim 7, wherein: The support plate has an adjustment groove along its length. A sleeve is slidably disposed in the adjustment groove. The top end of the sleeve does not protrude from the adjustment groove. The positioning pin is elastically disposed in the sleeve. In the initial state, the top end of the positioning pin protrudes from the sleeve and is located above the support plate.

9. The apparatus of claim 8, wherein: The bottom of the positioning pin is provided with a positioning cap, and in the initial state, the positioning cap is in close contact with the bottom of the support plate.

10. The apparatus of claim 9, wherein: The positioning cap has interlocking positioning teeth on the end face that contacts the support plate.

Images