Pipeline under-pressure head collision device and method

Abstract

The invention discloses a pipeline under-pressure head collision device and method, which are used for removing a sealing plate for sealing a port of an under-pressure pipe, so that the port of the under-pressure pipe is communicated with a valve, the head collision device comprises a trepanning drill bit and a containing cavity, the caliber of the trepanning drill bit is smaller than that of the port of the under-pressure pipe and that of the maximum opening of the valve, and the containing cavity is used for containing the trepanning drill bit. The containing cavity is provided with a communication port detachably connected with a first port of the valve, so that the first port of the valve is closed, the trepanning drill bit is controlled by a rotating device to rotate, and the trepanning drill bit is controlled by a telescopic device to stretch out and draw back relative to the containing cavity. And therefore, when the opening drill bit extends out, the opening drill bit can penetrate through the valve to reach the sealing plate, or the opening drill bit retracts into the containing cavity. Pipeline communication can be completed in the pipeline running state, no pipeline needs to be stopped, operation is easy, manpower and material resources are saved, and field production is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline construction, and in particular to a pipeline pressure-bearing butt joint device and method. Background Art

[0002] At large chemical plants, pipeline corridors connect numerous devices. Once the corridor and some pre-installed devices are complete and ready for commissioning, to ensure that these devices are not impacted, pipelines from the corridor to the remaining devices are either sealed with valves in the designated areas or blinded with welded blind plates at the pipe ends. Once the devices are complete, pipelines with valves in designated areas can simply be connected and opened. However, pipelines without valves in designated areas often require the corridor to shut down the pipeline, drain the media, and then connect it again for various tests. This traditional process is labor-intensive and resource-intensive, and the downtime can also impact the operation of other related pipelines, significantly impacting industrial production. Summary of the Invention

[0003] In view of this, the present application provides a pipeline pressure joint device and method, which can complete pipeline connection while the pipeline is in operation without shutting down any pipeline. The operation is simple, which saves manpower and material resources and ensures on-site production.

[0004] The technical solution adopted by the present invention is to design a pipeline pressurized collision device for removing the sealing plate that blocks the pressurized pipe port, thereby connecting the pressurized pipe port with the valve. The collision device includes a hole-opening drill bit with a diameter smaller than the pressurized pipe port and the maximum opening of the valve, and an accommodating chamber for placing the hole-opening drill bit. The accommodating chamber has a connecting port that is detachably connected to the first port of the valve, thereby closing the first port of the valve. The hole-opening drill bit is controlled to rotate by a rotating device, and the hole-opening drill bit is controlled to extend and retract relative to the accommodating chamber by a telescopic device, so that when the opening drill bit is extended, it can pass through the valve and reach the sealing plate or retract into the accommodating chamber.

[0005] In certain embodiments, the hole-opening drill bit is connected to a rotating shaft that can be extended and retracted relative to the closing plate, and the rotating shaft slides out of the accommodating cavity and is connected to an external telescopic device and / or rotating device.

[0006] In some embodiments, a pull rod for connecting the sealing plate is further included, and the rotating shaft is provided with an axial through hole for the pull rod to slide through.

[0007] In some embodiments, the opening drill bit is a hollow drill bit, which includes a cylindrical cavity, a front end edge of the cylindrical cavity is a cutting tooth, and a rear end of the cylindrical cavity is provided with an end cover connected to the rotating shaft.

[0008] In some embodiments, several circumferential scraping mechanisms are evenly distributed around the rear end of the hollow drill bit, and each of the circumferential scraping mechanisms includes a support rod, a connecting rod and a push rod that are rotatably connected in sequence through an end shaft. One end of the support rod is rotatably connected to the rear end edge of the cylindrical cavity, and the push rod slides through the end cover. A return spring is provided between the push rod and the end cover, and both ends of the connecting rod are rotatably connected to the end of the support rod and the end of the push rod respectively. In a natural state, the return spring makes the push rod close to the cutting teeth, and the cut sealing plate presses the push rod backwards, thereby causing the support rod to move radially outward, and a radially outward scraping portion is provided on the support rod.

[0009] In some embodiments, a distance adjustment device is provided between the pull rod and the rotating shaft, and the distance adjustment device controls the pull rod to move forward and backward relative to the rotating shaft.

[0010] In some embodiments, a magnet for attracting iron filings is disposed in the cylindrical cavity.

[0011] In certain embodiments, the inner diameter of the cylindrical cavity is larger than the cutting diameter of the cutting tooth.

[0012] In certain embodiments, a transition pipe connecting the second port of the valve and the pressure pipe port is further included.

[0013] A method for the pipeline pressure-jointing device, characterized in that: First, the second port of the valve is fixedly connected to the pressure pipe port, so that the communication port of the accommodating cavity is detachably connected to the first port of the valve; Secondly, the valve is opened so that the opening drill bit extends through the valve to reach the sealing plate, and then the opening drill bit is rotated to drill a through hole in the sealing plate that connects the pressure pipe and the valve; Again, the opening drill bit is retracted into the accommodating cavity; Finally, the valve is closed, the accommodating cavity and the opening drill bit are removed, the first port of the valve is connected to other pipelines, and then the valve is opened to complete the pressurized joint of the pipeline.

[0014] In certain embodiments, the present invention has the following advantages compared to the prior art: The present invention can complete pipeline connection while the pipeline is in operation, allowing direct construction under pressure without shutting down any pipelines. This is simple to operate, saving both manpower and material resources while ensuring on-site production. The present invention can also utilize the circular plate cut off from the sealing plate to control the scraping device to grind away the remaining sealing plate, thereby reducing the obstruction of the remaining portion to the fluid in the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present application will be described in detail below with specific embodiments and accompanying drawings, which are not necessarily drawn to scale, and which show, by way of illustration, the principles of the application. The same reference numerals can be used to describe similar components throughout the several views. The accompanying drawings are intended to depict only typical embodiments of the application, and therefore should not be considered to narrow the scope of the present application.

[0016] wherein: Figure 1 is a schematic diagram of a pressurized pipe with a sealing plate.

[0017] Figure 2 is a schematic diagram of a pressurized pipe connected with a transition pipe, and a sealing plate connected with a pull rod.

[0018] Figure 3 is a schematic diagram of a transition pipe connected with a valve.

[0019] Figure 4 is a schematic diagram of a valve connected with a receiving cavity.

[0020] Figure 5 is an enlarged schematic diagram of A in Figure 4

[0021] Figure 6 is a schematic diagram of a core drill retracted into a receiving cavity after drilling a round plate on a sealing plate.

[0022] Figure 7 is an enlarged schematic diagram of B in Figure 6

[0023] Figure 8 is a schematic diagram of a support rod scraping a residual portion of a sealing plate.

[0024] Figure 9 is an enlarged schematic diagram of C in Figure 8

[0025] Figure 10 is a schematic diagram of a core drill retracted into a receiving cavity.

[0026] In the drawings, 1 is a pressurized pipe; 2 is a sealing plate; 3 is a valve; 4 is a core drill; 5 is a receiving cavity; 6 is a motor; 7 is an extension device; 8 is a rotating shaft; 9 is a sliding sleeve; 10 is a blocking body; 11 is a pull rod; 12 is an end cover; 13 is a round plate; 14 is a transition pipe; 15 is a support rod; 16 is a connecting rod; 17 is a jacking rod; 18 is a return spring; 19 is a screw sleeve; 20 is a magnet; 21 is a cutting tooth; and 22 is a scraping portion. DETAILED DESCRIPTION

[0027] ​​​The following are specific embodiments of the present invention, which are further described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the inventions involved in the claims. In addition, not all combinations of features described in the embodiments are necessarily required for the solutions of the invention.

[0028] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments. Example

[0029] like Figure 1 、 2 As shown in Figures 3, 4 and 5, a pipeline pressure-bumping device is used to remove the sealing plate 2 (or blind plate) that blocks the port of the pressure pipe 1, thereby connecting the port of the pressure pipe 1 to the valve 3. The device includes a hole-opening drill bit 4 with a diameter smaller than the port of the pressure pipe 1 and the maximum opening of the valve 3, and an accommodating chamber 5 for placing the hole-opening drill bit 4. The accommodating chamber 5 has a connecting port that is detachably connected to the first port of the valve 3, thereby closing the first port of the valve 3. The hole-opening drill bit 4 is controlled to rotate by a rotating device, thereby opening a hole in the sealing plate 2. The hole-opening drill bit 4 is controlled to expand and contract relative to the accommodating chamber 5 by a telescopic device 7, so that when the opening drill bit is extended, it can pass through the valve 3 to reach the sealing plate 2 to open a hole, or the opening drill bit can be retracted into the accommodating chamber 5. The valve 3 can be a ball valve or a gate valve, which is convenient for the passage of the hole-opening drill bit 4. The rotating device can be, for example, a motor 6. The telescopic device 7 can be, for example, a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, or the like that can control the telescopic movement of the hole-opening drill bit 4 relative to the sealing plate 2.

[0030] The basic method of using the pipeline pressure contact device is as follows: First, the second port of the valve 3 is fixedly connected to the port of the pressure pipe 1, so that the communication port of the accommodating chamber 5 and the first port of the valve 3 are detachably connected, for example, by bolting the port flange to facilitate disassembly; Next, the valve 3 is opened so that the opening drill bit extends through the valve 3 and reaches the sealing plate 2. The motor 6 is then used to drive the opening drill bit to rotate, thereby drilling a through hole in the sealing plate 2 that connects the pressurized pipe 1 and the valve 3. This enables the pressurized pipe 1 to be connected to the valve 3. Since the accommodating chamber 5 closes the first port of the valve 3, liquid will not overflow. Again, as Figure 10 As shown, the opening drill bit is retracted into the accommodating cavity 5; Finally, the valve 3 is closed, the accommodating cavity 5 and the open hole drill bit are removed, the first port of the valve 3 is connected with other pipelines, the valve 3 is opened, the pressurized pipeline 1 is connected with other pipelines, and the pressurized pipeline is completed.

[0031] Further, the open hole drill bit 4 is connected with a rotating shaft 8 capable of stretching and contracting relative to the sealing plate 2, the rotating shaft 8 is slidably connected with the stretching and contracting device 7 and the rotating device outside the accommodating cavity 5. The rotating shaft 8 is slidably connected with the closed end of the accommodating cavity 5, so that the rotating shaft 8 can rotate and stretch and contract relative to the accommodating cavity 5 while maintaining the sealing of the accommodating cavity 5.

[0032] Specifically, the rotating shaft 8 outside the accommodating cavity 5 is sleeved with a sliding sleeve 9, the rotating shaft 8 is provided with a stop body 10 on both sides of the sliding sleeve 9, so that the rotating shaft 8 can rotate relative to the sliding sleeve 9 but cannot move axially, the sliding sleeve 9 is connected with the accommodating cavity 5 through the stretching and contracting device 7, so that the stretching and contraction of the rotating shaft 8 relative to the accommodating cavity 5 can be controlled, the sliding sleeve 9 is connected with the motor 6, the rotating shaft 8 is coaxially fixed with a first gear, and the motor 6 is provided with a second gear meshing with the first gear, so as to drive the rotating shaft 8 to rotate and in turn drive the open hole drill bit 4 to rotate.

[0033] As shown in Figure 6 , 7 , 8, 9, further comprising a pull rod 11 for connecting the sealing plate 2, and the rotating shaft 8 is provided with an axial through hole for the pull rod 11 to slide through. The pull rod 11 can be welded on the sealing plate 2 before the valve 3 and other equipment are installed, and the end of the pull rod 11 is welded as close to the center of the sealing plate 2 as possible, so that the pull rod 11 can pass through the rotating shaft 8, and the pull rod 11 can support and guide the rotating shaft 8. Further, the open hole drill bit is a hollow drill bit, also known as a core drill bit, that is, the hollow drill bit comprises a cylindrical cavity, the front end of the cylindrical cavity is provided with a cutting tooth 21, the rear end of the cylindrical cavity is provided with an end cover 12 connected with the rotating shaft 8, and the open hole drill bit rotates. Since the cutting tooth 21 is sleeve-shaped, a circular plate 13 connected with the pull rod 11 can be cut on the sealing plate 2 during drilling, the inner diameter of the cylindrical cavity is larger than the cutting diameter of the cutting tooth 21, so that the circular plate 13 can enter the cylindrical cavity, and since the circular plate 13 is connected with the pull rod 11, the circular plate 13 can be removed together with the open hole drill bit and the pull rod 11 after being moved to the accommodating cavity 5, so as to avoid that the cut waste is left in the pipeline.

[0034] It also includes a transition pipe 14 connecting the second port of the valve 3 and the port of the pressurized pipe 1. One port of the transition pipe 14 can be welded to the port of the pressurized pipe 1, while the other port of the transition pipe 14 is connected to the second port of the valve 3 through a flange, which facilitates the installation of the valve 3.

[0035] Furthermore, the hollow drill bit has several circumferential scraping mechanisms evenly distributed around the rear end. Each circumferential scraping mechanism includes a support rod 15, a connecting rod 16, and a push rod 17, which are rotatably connected in sequence via an end shaft. One end of the support rod 15 is rotatably connected to the rear edge of the cylindrical cavity. The push rod 17 slides through the end cap 12. A return spring 18 is provided between the push rod 17 and the end cap 12. The ends of the connecting rod 16 are rotatably connected to the ends of the support rod 15 and the push rod 17, respectively. In a natural state, the return spring 18 forces the push rod 17 to approach the cutting teeth 21, thereby causing the support rod 15 to approach the pull rod 11 and away from the inner wall of the transition tube 14. The support rod 15 is provided with a radially outward-facing scraping portion 22. The scraping portion 22 can be, for example, a hard scraper capable of scraping metal or a grinding layer capable of grinding metal. When the cut sealing plate 2 presses the push rod 17 backward, the support rod 15 moves radially outward, that is, the support rod 15 moves radially away from the pull rod 11 and close to the inner wall of the transition pipe 14. At this time, the hollow drill bit is moved forward again so that the scraping part 22 of the support rod 15 contacts the remaining sealing plate 2, and then the hollow drill bit is rotated to use the scraping part 22 of the support rod 15 to grind off the remaining sealing plate 2. Because after the circular plate 13 is cut off on the sealing plate 2 with a hollow drill bit, some annular protrusions will remain on the inner wall of the pressure pipe 1. If the height is too high, it will have a certain obstruction to the water flow. For this reason, the scraping part 22 of the support rod 15 is used to grind it again, which is beneficial to reduce the obstruction of the residual part.

[0036] In order to maintain the backward pushing effect of the circular plate 13 on the push rod 17, a spacing adjustment device is provided between the pull rod 11 and the rotating shaft 8. The spacing adjustment device controls the forward and backward movement of the pull rod 11 relative to the rotating shaft 8. Specifically, in this embodiment, the pull rod 11 is provided with a thread, that is, the pull rod 11 is equivalent to a screw, and the end of the pull rod 11 protruding from the rotating shaft 8 is sleeved with a threaded sleeve 19 that cooperates with the thread. The extension and retraction of the pull rod 11 relative to the rotating shaft 8 is controlled by the threaded sleeve 19 of the rotating shaft 8, thereby controlling the pushing force of the circular plate 13 on the push rod 17.

[0037] Furthermore, a magnet 20 may be provided in the cylindrical cavity, so that iron filings generated during the opening are adsorbed into the cylindrical cavity of the magnet 20 .

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A pipeline pressure contact device, used to remove the sealing plate blocking the pressure pipe port, so that the pressure pipe port is connected to the valve, characterized in that: The collision device includes a hole-opening drill bit with a diameter smaller than the pressure pipe port and the maximum opening of the valve, and a accommodating chamber for placing the hole-opening drill bit. The accommodating chamber has a connecting port detachably connected to the first port of the valve, so that the first port of the valve is closed. The hole-opening drill bit is controlled to rotate by a rotating device, and the hole-opening drill bit is controlled to extend and retract relative to the accommodating chamber by a telescopic device, so that the hole-opening drill bit can pass through the valve and reach the sealing plate when extended, or the hole-opening drill bit can be retracted into the accommodating chamber.

2. The pipeline pressure contact device according to claim 1, characterized in that: The hole-opening drill bit is connected to a rotating shaft that can be extended and retracted relative to the closing plate. The rotating shaft slides out of the accommodating cavity and is connected to an external telescopic device and / or rotating device.

3. The pipeline pressure contact device according to claim 2, characterized in that: It also includes a pull rod for connecting the sealing plate, and the rotating shaft is provided with an axial through hole for the pull rod to slide through.

4. The pipeline pressure contact device according to claim 3, characterized in that: The opening drill bit is a hollow drill bit, which includes a cylindrical cavity, a front end edge of the cylindrical cavity is provided with cutting teeth, and a rear end of the cylindrical cavity is provided with an end cover connected to the rotating shaft.

5. The pipeline pressure contact device according to claim 4, characterized in that: Several circumferential scraping mechanisms are evenly distributed around the rear end of the hollow drill bit, and each of the circumferential scraping mechanisms includes a support rod, a connecting rod and a push rod that are rotatably connected in sequence through an end shaft. One end of the support rod is rotatably connected to the rear end edge of the cylindrical cavity, and the push rod slides through the end cover. A return spring is provided between the push rod and the end cover, and the two ends of the connecting rod are rotatably connected to the end of the support rod and the end of the push rod respectively. In the natural state, the return spring makes the push rod close to the cutting teeth, and the cut sealing plate presses the push rod backwards, thereby causing the support rod to move radially outward, and a radially outward scraping portion is provided on the support rod.

6. The pipeline pressure contact device according to claim 5, characterized in that: A distance adjustment device is provided between the pull rod and the rotating shaft, and the distance adjustment device controls the pull rod to move forward and backward relative to the rotating shaft.

7. The pipeline pressure contact device according to claim 5, characterized in that: The inner diameter of the cylindrical cavity is larger than the cutting diameter of the cutting tooth.

8. The pipeline pressure contact device according to claim 5, characterized in that: A magnet for absorbing iron filings is arranged in the cylindrical cavity.

9. The pipeline pressure-jointing device according to claim 1, characterized in that: It also includes a transition pipe connecting the second port of the valve and the pressure pipe port.

10. A method for the pipeline pressure-jointing device according to any one of claims 1 to 9, characterized in that: First, the second port of the valve is fixedly connected to the pressure pipe port, so that the communication port of the accommodating cavity is detachably connected to the first port of the valve; Secondly, the valve is opened so that the opening drill bit extends through the valve to reach the sealing plate, and then the opening drill bit is rotated to drill a through hole in the sealing plate that connects the pressure pipe and the valve; Again, the opening drill bit is retracted into the accommodating cavity; Finally, the valve is closed, the accommodating cavity and the opening drill bit are removed, the first port of the valve is connected to other pipelines, and then the valve is opened to complete the pressurized joint of the pipeline.

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