A pipe zero-interruption branch pipe hole-opening device and hole-opening process

Abstract

The present invention discloses a device and a process for opening a branch pipe hole without interrupting the pipeline, which include a fastening hoop, a branch pipe interface fastener, a ball valve, a sealing drill bit assembly and a power motor; the fastening hoop and the branch pipe interface fastener are sleeved outside the main pipeline to form a circle; the branch pipe interface fastener includes a connecting pipe and semi-circular hoop pieces with ears on both sides that are interconnected; the connecting pipe and the semi-circular hoop pieces are perpendicular to each other; the ball valve is arranged in the connecting pipe; the sealing drill bit assembly includes a drill bit casing, a drill bit and a drill bit advancing and retracting thread; one end of the drill bit casing is connected to the connecting pipe, and the other end is docked with the power motor; the drill bit is located in the hollow cavity formed by the drill bit casing and the connecting pipe, the front top of the drill bit is the working end and is arranged facing the side of the main pipeline to be opened, and the rear top of the drill bit is connected to the power output of the power motor, and the drill bit is controlled by the power motor to advance and retract. The present invention is applicable to the construction of opening branch pipes for various fluid pipelines, not only without interrupting the supply, but also reducing the construction difficulty and waste.

Description

Technical Field

[0001] The present invention belongs to the technical field of installing connecting branch pipe lines on a main conveying pipeline, and particularly relates to a pipe zero-interruption branch pipe hole-opening device and a hole-opening process. Background Art

[0002] With the increasing development and wide application of conveying pipelines, especially the large-scale laying of liquid and gas conveying pipelines, the technical requirements for installing connections on branch pipe lines of conveying pipelines under pressure are also getting higher and higher. To ensure a certain flow rate, the fluid in the pipeline is transmitted under a certain pressure. During the transmission process, for pipeline repair, renovation and other construction, the pipelines involved need to be cut off, and operations such as pressure relief, emptying, and purging of the pipeline are carried out, and then relevant equipment is used for construction. At present, with the rapid growth of the scale of newly built pipelines, the continuous increase of pipeline transmission pressure and caliber, the tasks of pipeline renovation and maintenance are becoming heavier and heavier. Pipeline shutdown affects safe operation, has high costs, a long cycle, and poor economy; it seriously affects the operating cost of fluid pipelines. Summary of the Invention

[0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a pipe zero-interruption branch pipe hole-opening device. Another purpose of the present invention is to provide a pipe zero-interruption branch pipe hole-opening process.

[0004] To achieve the above purposes, the technical solution of the present invention is as follows:

[0005] A pipe zero-interruption branch pipe hole-opening device includes a fastening hoop installed on the non-hole-opening side of the main pipeline, a branch pipe interface fastener installed on the hole-opening side of the main pipeline to be opened, a ball valve, a sealing drill bit assembly, and a power motor;

[0006] The fastening hoop is a semi-circular hoop piece structure with ears on both sides; the branch pipe interface fastener includes a connecting pipe communicating with each other and semi-circular hoop pieces with ears on both sides, and the connecting pipe is perpendicular to the semi-circular hoop pieces; the fastening hoop and the branch pipe interface fastener are sleeved outside the main pipeline to form a circle and are connected by screws provided on the ears on both sides;

[0007] The main body of the ball valve is arranged inside the connecting pipe;

[0008] The sealing drill bit assembly includes a drill bit sleeve, a drill bit, and a drill bit advancing and retracting thread; one end of the drill bit sleeve is connected to the connecting pipe, and the other end is docked with the power motor; the drill bit is located in the hollow cavity formed by the drill bit sleeve and the connecting pipe, the drill bit is in the shape of a long rod, its front top is a working end and is arranged facing the hole-opening side of the main pipeline to be opened, its rear top is connected to the power output of the power motor, and the drill bit is controlled by the power motor to advance and retract; the drill bit advancing and retracting thread is sleeved on the rear part of the drill bit.

[0009] Further, it also includes a manual control device, which comprises a threaded rod, two sealed bearings and a rotary handle. The threaded rod is provided with threads that are threadedly engaged with the advancing and retracting threads of the drill bit. These threads pass through an opening groove formed in the drill bit casing and are vertically engaged with the advancing and retracting threads of the drill bit. The two sealed bearings are arranged at both ends of the threaded rod, and the outer sides of the two sealed bearings are connected to the external oval-shaped cover. The threaded rod is located inside the oval-shaped cover, and one end thereof extends out of the oval-shaped cover and is connected to the rotary handle.

[0010] Furthermore, the side surface of the oval-shaped cover is hermetically assembled with the mounting plate of the power motor, and the lower part of the oval-shaped cover covers a part of the drill bit casing. The pressure relief pipe arranged on one side of the external oval-shaped cover and close to the main pipeline is used to discharge the debris generated during the drilling of the main pipeline hole and relieve pressure; the small branch pipe arranged on the other side of the external oval-shaped cover and close to the power motor is used to inject water to cool the drill bit or inject nitrogen to prevent flammability and explosion.

[0011] Further, a sealing washer is additionally arranged between the branch pipe interface fastener and the main pipeline.

[0012] Further, it also includes a base located below the main pipeline. The bottoms of the fastening hoop, the branch pipe interface fastener and the mounting plate of the power motor all rest on the base.

[0013] Further, the manual switch of the ball valve is arranged outside the connecting pipe to control the opening and closing of the connecting pipe.

[0014] Further, the power motor adopts a stepping motor, and the stepping motor runs through servo control to realize the advancement and retraction of the drill bit.

[0015] The present invention also provides a process for opening a branch pipe hole without interrupting the pipeline, which includes the following steps:

[0016] (1) On the original main pipeline that normally supplies liquid and gas, first place a sealing washer at the point on the side where the hole is to be opened;

[0017] (2) Install a fastening hoop on the non-opening side of the main pipeline, and fasten the fastening hoop and the branch pipe interface fastener on the opening side to the main pipeline with screws;

[0018] (3) Open the ball valve, extend the drill bit to the side of the main pipeline where the hole is to be opened, and put the drill bit on the drill bit casing; connect the end of the drill bit to the power motor; if flammable substances are transported in the main pipeline, add nitrogen to prevent combustion;

[0019] (4) The power motor slowly advances the drill bit until the branch pipe hole is opened, then retracts the drill bit, and closes the ball valve to reduce leakage and waste; or by rotating the manual control device forward and backward, realize the advancement and retraction of the drill bit;

[0020] (5) Dismantle the drill bit casing, the drill bit and the power motor, and install the branch pipe.

[0021] Beneficial effects: The present invention is applicable to the construction of branch pipes in various fluid pipelines. Not only will the original demand end not be interrupted in supply, but also the construction difficulty and waste are reduced. Description of the drawings

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a partial structural diagram of the present invention.

[0024] In the figure, 1 - main pipeline, 2 - base, 3 - fastening hoop, 4 - branch pipe interface fastener, 5 - ball valve, 6 - sealing drill bit assembly, 7 - power motor, 8 - manual control device, 9 - sealing gasket, 10 - oval cover, 11 - pressure relief pipeline, 12 - small branch pipe;

[0025] 31 - screw;

[0026] 41 - semi - circular hoop piece, 42 - connecting pipe;

[0027] 51 - manual switch;

[0028] 61 - drill bit casing, 62 - drill bit, 63 - drill bit advancing and retracting thread, 64 - opening groove;

[0029] 71 - mounting piece;

[0030] 81 - threaded rod, 82 - sealing bearing, 83 - rotating handle, 84 - thread. Detailed implementation manners

[0031] The following describes the present invention with reference to specific embodiments. Those skilled in the art can understand that these embodiments are only used to illustrate the present invention and do not limit the scope of the present invention in any way.

[0032] A device for opening a branch hole in a pipeline without interruption, as Figure 1 and Figure 2 shown, includes a base 2 located below the main pipeline 1, a fastening hoop 3 installed on the non - opening side of the main pipeline 1, a branch pipe interface fastener 4 installed on the side of the main pipeline 1 to be opened, a ball valve 5, a sealing drill bit assembly 6, a power motor 7, and a manual control device 8;

[0033] The fastening hoop 3 is a semi-circular hoop structure with earpieces on both sides; the branch pipe interface fastener 4 includes a connecting pipe 41 that is interconnected and semi-circular hoop pieces 42 with earpieces on both sides. The connecting pipe 41 is perpendicular to the semi-circular hoop pieces 42. The fastening hoop 3 and the branch pipe interface fastener 4 are sleeved around the outside of the main pipe 1 and connected by screws 31 provided on the earpieces on both sides. The bottoms of the fastening hoop 3 and the branch pipe interface fastener 4 both rest on the base 2. A sealing gasket 9 is also provided between the branch pipe interface fastener 4 and the main pipe 1.

[0034] The main body of the ball valve 5 is disposed inside the connecting pipe 41 to control the opening and closing of the connecting pipe 41. The manual switch 51 of the ball valve 5 is disposed outside the connecting pipe 41.

[0035] The sealing drill assembly 6 includes a drill casing 61, a drill bit 62, and a drill bit advancing and retracting thread 63. One end of the drill casing 61 is connected to the connecting pipe 41, and the other end is docked with the power motor 7. The drill bit 62 is located in the hollow cavity formed by the drill casing 61 and the connecting pipe 41. The drill bit 62 is in the shape of a long rod-like, with its front top being the working end and facing the side of the main pipe 1 to be drilled. Its rear top is connected to the power output of the power motor 7. In this embodiment, the power motor 7 uses a stepper motor, and the stepper motor operates through servo to achieve the advancement and retraction of the drill bit. The drill bit advancing and retracting thread 63 is sleeved on the rear part of the drill bit 62.

[0036] The manual control device 8 includes a threaded rod 81, two sealing bearings 82, and a rotating handle 83. The threaded rod 81 is provided with a thread 84 that mates with the drill bit advancing and retracting thread 63. This thread 84 passes through an opening groove 64 opened on the drill casing 61 and is vertically engaged with the drill bit advancing and retracting thread 63. The two sealing bearings 82 are disposed at both ends of the threaded rod 81. The outer sides of the two sealing bearings 82 are connected to the external oval-shaped cover 10. The threaded rod 81 is located inside the oval-shaped cover 10, and one end thereof extends out of the oval-shaped cover 10 and is connected to the rotating handle 83. The side of the external oval-shaped cover 10 is hermetically assembled with the mounting plate 71 of the power motor 7, and its lower part covers part of the drill casing 61. The pressure relief pipe 11 provided on one side of the external oval-shaped cover 10 and close to the main pipe 1 is used to discharge the debris generated when drilling the main pipe hole and relieve pressure. The small branch pipe 12 provided on the other side of the external oval-shaped cover 10 and close to the power motor 7 is used to inject water to cool the drill bit or use nitrogen to prevent explosion and fire.

[0037] A zero-interruption branch pipe opening process for pipelines includes the following steps:

[0038] (1) On the original main pipe that normally supplies liquid and gas, first place a sealing gasket on the side to be drilled.

[0039] (2) Install a fastening hoop on the non-drilling side of the main pipe. The fastening hoop and the branch pipe interface fastener on the drilling side are fastened to the main pipe with screws.

[0040] (3) Open the ball valve, extend the drill bit to the side of the main pipeline where the hole is to be opened, and put the drill bit on the drill bit casing; connect the end of the drill bit to the power motor; if flammable substances are transported in the main pipeline, add nitrogen for flame retardance;

[0041] (4) Slowly push the drill bit by the power motor until the branch pipe hole is opened, retract the drill bit, and close the ball valve to reduce leakage and waste; or rotate the manual control device forward and backward to achieve the advancement and retraction of the drill bit;

[0042] (5) Disassemble the drill bit casing, drill bit and power motor, and install the branch pipe.

Claims

1. A pipe zero-interruption branch pipe hole-opening device, characterized in that: It includes a fastening hoop installed on the non-opening side of the main pipeline, a branch pipe interface fastener installed on the opening side of the main pipeline to be opened, a ball valve, a sealing drill bit assembly, a power motor, a manual control device, and an oval cover; The fastening hoop is a semi-circular hoop structure with ears on both sides; the branch pipe interface fastener includes a connecting pipe communicating with each other and a semi-circular hoop with ears on both sides. The connecting pipe is perpendicular to the semi-circular hoop; the fastening hoop and the branch pipe interface fastener are sleeved and fixed into a circle outside the main pipeline and are connected by screws provided on the ears on both sides; The main body of the ball valve is arranged inside the connecting pipe; The sealing drill bit assembly includes a drill bit casing, a drill bit, and a drill bit advancing and retracting thread; the manual control device includes a threaded rod, two sealing bearings, and a rotating handle; the side of the oval cover is hermetically assembled with the mounting plate of the power motor, and the lower part of the oval cover covers part of the drill bit casing. The oval cover wraps the threaded rod and the two sealing bearings; One end of the drill bit casing is butted against the connecting pipe, and the other end is butted against the power motor; the drill bit is located in the hollow cavity formed by the drill bit casing and the connecting pipe. The drill bit is in the shape of a long rod. Its front top is the working end and is arranged facing the opening side of the main pipeline to be opened. Its rear top is connected to the power output of the power motor, and the drill bit is controlled by the power motor to advance and retract; the drill bit advancing and retracting thread is sleeved on the rear part of the drill bit; The threaded rod is provided with a thread that cooperates with the drill bit advancing and retracting thread. This thread passes through the opening groove opened on the drill bit casing and is vertically engaged with the drill bit advancing and retracting thread. The two sealing bearings are respectively arranged at both ends of the threaded rod. The outer sides of the two sealing bearings are connected to the external oval cover. One end of the threaded rod extends out of the oval cover and is connected to the rotating handle.

2. The pipe zero-interruption branch pipe hole opening device according to claim 1, characterized in that, The pressure relief pipeline arranged on one side of the external oval cover and close to the main pipeline is used to discharge the debris generated when drilling the main pipeline hole and relieve pressure; the small branch pipe arranged on the other side of the external oval cover and close to the power motor is used to inject water to cool the drill bit or inject nitrogen to prevent flammable and explosive substances.

3. The pipe zero-interruption branch pipe hole opening device according to claim 1, characterized in that, A sealing gasket is also added between the branch pipe interface fastener and the main pipeline.

4. The pipe zero-interruption branch pipe hole-opening device according to claim 1, characterized in that, It also includes a base located below the main pipeline. The bottoms of the fastening hoop, the branch pipe interface fastener, and the mounting plate of the power motor all rest on the base.

5. The branch pipe opening device with zero interruption for pipelines according to claim 1, characterized in that, The manual switch of the ball valve is arranged outside the connecting pipe to control the opening and closing of the connecting pipe.

6. The branch pipe opening device with zero interruption for pipelines according to claim 1, characterized in that, The power motor adopts a stepping motor, and the stepping motor runs through servo to realize the advancement and retraction of the drill bit.

7. A zero-interruption branch pipe hole opening process for pipelines, characterized in that, The pipeline zero-interruption branch pipe opening device according to any one of claims 1 to 6 is realized, including the following steps: (1) On the original main pipeline that normally supplies liquid and gas, first place a sealing gasket on the side to be opened; (2) Install the fastening hoop on the non-opening side of the main pipeline. The fastening hoop and the branch pipe interface fastener on the side to be opened are fastened to the main pipeline with screws; (3) Open the ball valve to extend the drill bit to the side of the main pipeline to be opened, and the drill bit is sleeved with the drill bit casing; the end of the drill bit is connected to the power motor; if flammable substances are transported in the main pipeline, add nitrogen to prevent combustion; (4) The power motor slowly advances the drill bit until the branch pipe hole is opened, retracts the drill bit, and closes the ball valve to reduce leakage and waste; or by rotating the manual control device forward and backward, the advancement and retraction of the drill bit are realized; (5) Remove the drill bit casing, drill bit and power motor, and install the branch pipe.

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