A construction process method for pipeline pressure tapping plugging

Abstract

The application discloses a pipeline pressure tapping plugging construction process method, which comprises the following steps: step one, thickness detection is performed on a medium pipeline to find out a position capable of being welded; step two, an outer wrapping pipeline one is installed on the outer side of the medium pipeline, and the outer end of the outer wrapping pipeline one is welded with the medium pipeline; step three, a special tee joint is installed on the outer side of the medium pipeline, and the connecting end one of the special tee joint is welded with the inner end of the outer wrapping pipeline one; step four, if the thickness of the medium pipeline meets the welding condition, the outer wrapping pipeline two is formed by repeating step two, and the inner end of the outer wrapping pipeline two is welded with the connecting end two of the special tee joint; if the thickness of the medium pipeline does not meet the welding condition, a sealing buckle is arranged on the connecting end two of the special tee joint; and step five, construction is performed through the process port of the special tee joint. The application has the advantages of making up for insufficient pipeline strength, being convenient for construction, and being low in construction risk.

Description

Technical Field

[0001] This invention relates to the field of pipeline pressurized construction technology, specifically to a construction process for pipeline pressurized opening and sealing. Background Technology

[0002] Live tapping and plugging of pipelines is a safe, economical, and rapid technology specifically designed for repairing in-service pipelines. It allows for the replacement, relocation, valve replacement, and addition of branch lines without interrupting the flow of media in the pipeline. Furthermore, it enables the rapid and safe repair of leaking pipelines, thereby restoring pipeline operation.

[0003] Existing live tapping and live plugging technologies require the welding of specialized tees to the pipes to be tapped or plugged, in order to reinforce the specific tapping and plugging locations and prevent accidental pipe rupture and leakage. When modifying or plugging media pipelines that are difficult to shut down systematically, it is possible to encounter pipelines that do not meet the conditions for live tapping or live plugging. These pipelines have thin walls and are severely corroded. Therefore, using conventional live plugging or live tapping methods will lead to many uncontrollable risks, making it impossible to carry out the relevant construction smoothly.

[0004] In existing technologies, pipelines in actual use often have insufficient wall strength to meet the requirements for pressurized tapping and sealing. Conventional methods can easily lead to pipeline leaks. It is necessary to provide a solution to address these difficult problems and enable pressurized tapping and sealing to proceed smoothly. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a construction process for pressurized pipe opening and sealing. This solution has the advantages of compensating for insufficient pipe strength, convenient construction, and low construction risk, and can be applied to pipeline construction where there is severe corrosion and the pipeline cannot be shut down for systematic treatment.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a construction process for sealing pressurized pipe openings, comprising the following steps:

[0007] Step 1: Perform thickness testing on the medium pipeline to identify areas that can be welded;

[0008] Step 2: Install two open sleeves opposite each other on the outside of the medium pipeline and weld them together at the joint to form the outer wrapped pipe 1. Weld the outer end of the outer wrapped pipe 1 to the medium pipeline.

[0009] Step 3: Install the special tee on the outside of the medium pipeline, and weld the connecting end of the special tee to the inner end of the outer wrapped pipeline.

[0010] Step 4: Based on whether the thickness of the medium pipeline on one side of the dedicated tee connection end 2 meets the welding requirements, perform the corresponding treatment; if it meets the welding requirements, repeat step 2 to form the outer wrapped pipeline 2, and weld the inner end of the outer wrapped pipeline 2 to the connection end 2 of the dedicated tee; if it does not meet the welding requirements, set a sealing buckle on the connection end 2 of the dedicated tee.

[0011] Step 5: Perform pressurized tapping or pressurized sealing through the process port of the dedicated tee.

[0012] In the above scheme, step one involves measuring the thickness of the medium pipeline to determine the weldable parts, facilitating subsequent construction. Step two involves fitting two open sleeves onto the outer ring of the medium pipeline, welding the joint between the two open sleeves to form a first wrapped pipe. One end of the first wrapped pipe is welded and sealed to the medium pipeline. In step three, a special tee is fitted onto the outside of the medium pipeline, and the first connecting end of the special tee is welded and sealed to the inner end of the first wrapped pipe. In step four, the process is adjusted based on whether the medium pipeline is suitable for welding a second wrapped pipe. If the thickness is sufficient, the second wrapped pipe can be directly installed on the outside of the medium pipeline, and the outer end of the second wrapped pipe is welded and sealed to the medium pipeline. The inner end of the second wrapped pipe is welded and sealed to the second connecting end of the special tee. If the conditions for welding the second wrapped pipe are not met, a sealing buckle is installed at the second connecting end of the special tee for sealing, thus forming a sealed pipeline that meets the conditions for pressurized tapping and plugging operations on the original medium pipeline with insufficient strength. The pressurized tapping and plugging construction is then carried out by connecting the corresponding special equipment through the special tee.

[0013] All welds must be free of porosity, and welding defects must be repaired promptly. If the original main medium pipeline does not meet the welding conditions in step four and needs to be sealed, the second connection end of the special tee can be sealed to the main medium pipeline with a sealing clip to form a whole. After the pressurized sealing is completed, the medium will no longer flow to the second connection end. Then, the second connection end of the special tee can be welded to seal it, thus eliminating the hidden danger at its root.

[0014] Furthermore, the sealing buckle includes a pressure cap and a flexible sealing material. When setting the sealing buckle, firstly, a flexible sealing material is set at the second connection end of the special tee, then the two arc-shaped cover plates are installed opposite each other on the outside of the medium pipeline, and the joint of the arc-shaped cover plates is welded to form a pressure cap, and then the pressure cap and the second connection end of the special tee are connected.

[0015] A flexible sealing material is used to seal the connection end two and the medium pipeline. A gland is formed by welding two arc-shaped cover plates. The gland is then connected and fixed to the connection end two of the special tee. The gland presses and positions the flexible sealing material.

[0016] Furthermore, the sealing buckle includes an outer wrapping pipe three, a pressure cap, and a flexible sealing material. When setting the sealing buckle, first set the outer wrapping pipe three according to step two, weld the inner end of the outer wrapping pipe three to the connection end two of the special tee, set the flexible sealing material at the outer end of the outer wrapping pipe three, then install the two arc-shaped cover plates opposite to each other on the outside of the medium pipeline, and weld the joint of the arc-shaped cover plates to form a pressure cap, and then connect the pressure cap and the outer end of the outer wrapping pipe three.

[0017] By welding the outer wrapping pipe three at the two connection ends to form a whole, the adjacent vulnerable pipe sections of the medium pipeline are protected to prevent deformation and leakage of adjacent vulnerable pipe sections during pressurized opening. Flexible sealing material is set to seal the outer end of the outer wrapping pipe three and the medium pipeline. A pressure cap is formed by welding two arc-shaped cover plates and the pressure cap is connected and fixed to the outer wrapping pipe three.

[0018] Furthermore, the dedicated tee includes an upper component and a lower component. In step three, the upper component and the lower component are first installed on the outside of the medium pipeline, and then the joint between the upper component and the lower component is welded.

[0019] The special tee is connected to the medium pipeline by installing and welding the upper and lower components.

[0020] Furthermore, in step five, a clamp valve and a hole opener are installed on the process port of the dedicated tee, and the hole opener is used to open the medium pipeline.

[0021] Since the dedicated tee has been properly sealed to the outside of the medium pipeline, it is convenient to perform pressurized drilling of the medium pipeline by installing a clamp valve and a hole opener.

[0022] Furthermore, in step five, after making the hole with the hole opener, the clamp valve is closed, the hole opener is disassembled and the plug is installed, and the plug is operated to seal the medium pipeline.

[0023] The hole opener includes a telescopic part and a cutter head. When opening a hole, the cutter head is lowered and driven to rotate to open the medium pipeline. After opening the hole, the cutter head of the hole opener is retracted, and the clamp valve is closed to seal the medium pipeline, thereby enabling the installation and disassembly of the hole opener and the plug.

[0024] Furthermore, in step five, after making the hole with the hole opener, the clamp valve is closed, the hole opener is disassembled and the lower plug is installed. The lower plug is then used to seal the process port of the dedicated tee.

[0025] By installing a lower plug, the process port is sealed, thus facilitating the disassembly of the equipment.

[0026] Furthermore, in step five, the cap at the lower end of the plug is lowered to the process port of the dedicated tee for sealing, the plugging screw at the process port of the dedicated tee is removed, and a limiting screw is installed to limit the cap.

[0027] The lower plug includes a telescopic structure and a cover located at the lower end of the telescopic structure. A connecting groove is provided in the middle of the cover along the circumferential direction. A plugging screw is provided at the process port of the special tee along the circumferential direction. After the cover is sealed, the plugging screw is replaced with a limit screw to fix the cover. The lower plug and clamp valve are disassembled, and a blind flange is installed to complete the sealing.

[0028] Furthermore, the occluder is a balloon occluder.

[0029] Furthermore, the thickness is measured using ultrasonic testing. This method is convenient to use.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. By installing a special tee on the medium pipeline by setting an external wrapping pipe, the limitation of the existing technology of directly performing pressurized construction on the medium pipeline is broken. It can effectively avoid direct welding operations on severely corroded pipelines, so that pressurized tapping and sealing operations can be carried out smoothly. It solves the problems of leakage risk caused by welding weak pipe sections directly on the medium pipeline and insufficient pipeline strength.

[0032] 2. The weldable connection and wrapping of the medium pipeline can reinforce the outside of the vulnerable pipe section, reducing the risk of leakage caused by pipeline corrosion and construction welding factors;

[0033] 3. A new pipe is installed outside the medium pipeline to complete the tee installation and to carry out the drilling and sealing construction. The structure is simple and the construction is convenient. Attached Figure Description

[0034] Figure 1 This is a structural schematic diagram of construction condition one in Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the open sleeve in Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the special tee structure in Embodiment 1 of the present invention;

[0037] Figure 4 This is a structural schematic diagram of construction condition two in Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of the installation structure of the lower plug in Embodiment 1 of the present invention;

[0039] Figure 6 This is a structural schematic diagram of construction condition three in Embodiment 2 of the present invention;

[0040] Figure 7 This is a structural schematic diagram of construction condition four in Embodiment 2 of the present invention;

[0041] Figure 8 This is a structural schematic diagram of construction condition five in Embodiment 3 of the present invention;

[0042] In the diagram: 1. Medium pipeline; 101. Adjacent main pipeline; 2. Outer wrapping pipeline one; 201. Open sleeve; 3. Special tee; 301. Connection end one; 302. Connection end two; 303. Process port; 311. Upper component; 312. Lower component; 4. Outer wrapping pipeline two; 5. Sealing buckle; 501. Gland; 502. Flexible sealing material; 6. Outer wrapping pipeline three; 7. Clamp valve; 8. Lower plug; 9. Cover; 10. Limit screw; 11. Welded seam. Detailed Implementation

[0043] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms front, back, left, right, etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0044] Example 1

[0045] like Figure 1-5 As shown, a construction process for sealing pressurized pipe openings includes the following steps:

[0046] Step 1: Perform thickness testing on medium pipeline 1 to identify areas where corrosion is not severe and welding is possible;

[0047] Step 2: Install two open sleeves 201 opposite each other on the outside of the medium pipeline 1 and weld them at the joint to form an outer wrapped pipe 2. Weld the outer end of the outer wrapped pipe 2 to the medium pipeline 1.

[0048] Step 3: Install the special tee 3 on the outside of the medium pipeline 1, and weld the connecting end 301 of the special tee 3 to the inner end of the outer wrapping pipeline 2;

[0049] Step 4: Based on whether the thickness of the medium pipeline 1 on one side of the connection end 2 302 of the special tee 3 meets the welding conditions, perform the corresponding treatment; if it meets the welding conditions, repeat step 2 to form the outer wrapped pipeline 2 4, and weld the inner end of the outer wrapped pipeline 2 4 to the connection end 2 302 of the special tee 3; if it does not meet the welding conditions, set a sealing buckle 5 at the connection end 2 302 of the special tee 3.

[0050] Step 5: Perform pressurized tapping or pressurized sealing through the process port 303 of the dedicated tee 3.

[0051] In the above scheme, step one involves thickness testing of the medium pipeline 1 to determine weldable sections, facilitating subsequent construction. Step two involves fitting two open sleeves 201 onto the outer ring of the medium pipeline 1, welding the joint between the two sleeves 201 to form a wrapped pipe 1. One end of the wrapped pipe 1 is welded to the medium pipeline 1 for sealing. Step three involves fitting a special tee 3 onto the outside of the medium pipeline 1, welding the connecting end 301 of the special tee 3 to the inner end of the outer wrapped pipe 2 for sealing. Step four involves determining whether the medium pipeline 1 meets the national standard requirements for welding the outer wrapped pipe 2 4. When the thickness is sufficient, an outer wrapping pipe 2 4 can be directly installed on the outside of the medium pipeline 1. The outer end of the outer wrapping pipe 2 4 is welded and sealed to the medium pipeline 1, and the inner end of the outer wrapping pipe 2 4 is welded and sealed to the connection end 2 302 of the special tee 3. When the conditions for welding the outer wrapping pipe 2 4 are not available, a sealing buckle 5 is set at the connection end 2 302 of the special tee 3 for sealing, thereby forming a sealing condition that meets the requirements for pressurized opening and sealing operation on the medium pipeline 1 with insufficient strength. The corresponding special equipment is connected through the special tee 3 to carry out pressurized opening and sealing construction.

[0052] The dedicated tee 3 includes a first connection end 301, a second connection end 302 corresponding to the medium pipeline 1, and a process port 303 for pressurized tapping and sealing construction. The thickness of the medium pipeline 1 is tested using an ultrasonic pipe thickness gauge. Two sleeves with nominal diameters larger than the main medium pipeline 1 are installed on the outside of the medium pipeline 1 with their openings facing each other. The sleeves are made by cutting a round pipe in half. The wrapped pipe is then wrapped around the original medium pipeline 1 and welded at the cut. The connection end of the dedicated tee 3 for pressurized tapping and sealing is welded to the wrapped pipe to form a whole. The other connection end of the dedicated tee 3 is wrapped and welded to the original main medium pipeline 1 using the same method. The other welding point between the medium pipeline 1 and the wrapped pipe is still at a weldable location on the main medium pipeline 1. The specific length of the wrapped pipe needs to be determined based on the actual site conditions. The inner end refers to the end closer to the dedicated tee 3, and the outer end refers to the end farther from the dedicated tee 3. All welds 11 must be free of porosity, and welding defects must be repaired promptly.

[0053] If the original main medium pipeline 1 does not meet the welding conditions in step four and needs to be sealed, the second connection end 302 of the special tee 3 can be sealed with the main medium pipeline 1 using the sealing buckle 5 to form a whole. After the pressurized sealing is completed, the medium will no longer flow to the second connection end 302 side. At this time, the second connection end 302 of the special tee 3 can be welded and sealed to fundamentally eliminate the hidden danger.

[0054] Furthermore, the sealing buckle 5 includes a pressure cap 501 and a flexible sealing material 502. When setting the sealing buckle 5, the flexible sealing material 502 is first set at the second connection end 302 of the special tee 3, and then the two arc-shaped cover plates are installed opposite each other on the outside of the medium pipeline 1. The joint of the arc-shaped cover plates is welded to form the pressure cap 501, and then the pressure cap 501 and the second connection end 302 of the special tee 3 are connected.

[0055] The flexible sealing material 502 is used to seal the connection end 302 and the medium pipeline 1. The pressure cover 501 is formed by welding two arc-shaped cover plates. The pressure cover 501 is connected and fixed to the connection end 302 of the special tee 3. The pressure cover 501 presses and positions the flexible sealing material 502.

[0056] The flexible sealing material 502 may include an open sealing gasket and foam tape. Connection holes are provided around the perimeter of the gland 501 and the dedicated tee 3, and the corresponding holes are fixed together by bolts.

[0057] Furthermore, the dedicated tee 3 includes an upper component 311 and a lower component 312. In step three, the upper component 311 and the lower component 312 are first installed on the outside of the medium pipeline 1, and then the joint of the upper component 311 and the lower component 312 is welded.

[0058] The special tee 3 is connected to the medium pipeline 1 by installing and welding the upper component 311 and the lower component 312.

[0059] Furthermore, in step five, a clamp valve 7 and a hole opener are installed on the process port 303 of the dedicated tee 3, and the hole opener is used to open the medium pipeline 1.

[0060] Since the dedicated tee 3 has been properly sealed to the outside of the medium pipeline 1, it is convenient to open the medium pipeline 1 under pressure by installing the clamp valve 7 and the hole opener.

[0061] Install the plug or sealing device as needed.

[0062] Furthermore, after making the hole using the hole opener in step five, the clamp valve 7 is closed, the hole opener is disassembled and the lower plug 8 is installed. The lower plug 8 is then used to seal the process port 303 of the dedicated tee 3.

[0063] The hole opener includes a telescopic part and a cutter head. When opening a hole, the cutter head is lowered and driven to rotate to open the medium pipeline 1. After opening the hole, the cutter head of the hole opener is retracted, and the clamp valve 7 is closed to seal the medium pipeline 1, thereby enabling the disassembly of the hole opener and the installation of the plug.

[0064] Close the clamp valve 7 to discharge the medium inside the orifice, and disassemble the orifice to install the lower plug. Use the lower plug 8 to seal the process port 303.

[0065] Furthermore, in step five, the cap 9 at the lower end of the lower plug 8 is lowered to the process port 303 of the dedicated tee 3 for sealing, the plugging screw at the process port 303 of the dedicated tee 3 is removed, and the limiting screw 10 is installed to limit the cap 9.

[0066] The lower plug 8 includes a telescopic structure and a cover 9 located at the lower end of the telescopic structure. A connecting groove is provided in the middle of the cover 9 along the circumferential direction. A plugging screw is provided in the process port 303 of the special tee 3 along the circumferential direction. After the cover 9 is sealed, the plugging screw is replaced with a limit screw 10 to fix the cover 9. The lower plug 8 and the clamp valve 7 are disassembled, and a blind plate is installed to complete the sealing.

[0067] Furthermore, the thickness is measured using ultrasonic testing. This method is convenient to use.

[0068] Construction Scenario 1: When the thickness of the medium pipeline 1 is sufficient, the outer wrapping pipe 2 4 is directly installed on the outside of the medium pipeline 1. Construction Scenario 2: When the conditions for welding the outer wrapping pipe 2 4 are not available, a sealing buckle 5 is installed at the connection end 2 302 of the special tee 3 for sealing.

[0069] Example 2

[0070] like Figure 6-7 As shown, this embodiment of the construction process for sealing pressurized pipe openings is further optimized based on Embodiment 1:

[0071] The medium pipeline 1 includes an adjacent main pipeline 101 and a branch pipeline to be constructed. The adjacent main pipeline 101 has a good structural thickness and corrosion resistance. The outer end of the outer wrapping pipeline 2 is directly welded to the adjacent main pipeline 101, thereby avoiding construction on the vulnerable branch pipeline, reducing the risk of medium leakage, and improving construction stability.

[0072] Construction scenarios three and four involve welding the outer end of the outer-wrapped pipe 2 directly to the adjacent main pipe 101, based on example 1.

[0073] Furthermore, step five, pressurized plugging, includes using a hole opener to make a hole, closing the clamp valve 7, disassembling the hole opener and installing the plug, and operating the plug to plug the medium pipeline 1.

[0074] The hole opener includes a telescopic part and a cutter head. When opening a hole, the cutter head is lowered and driven to rotate to open the medium pipeline 1. After opening the hole, the cutter head of the hole opener is retracted and the clamp valve 7 is closed to seal the medium pipeline 1, thereby enabling the installation and disassembly of the hole opener and the plug.

[0075] Close the clamp valve 7 to discharge the medium from the orifice, and disassemble the orifice to install the plug. The plug of the plug is moved up and down through the telescopic part 2 of the plug to block the medium pipeline 1. The orifice and the plug are connected to the special tee 3 by flanges and bolts.

[0076] Furthermore, the occluder is a balloon occluder.

[0077] Example 3

[0078] like Figure 8 As shown, this embodiment of the construction process for sealing a pipe under pressure is further optimized based on embodiment 2:

[0079] Furthermore, the sealing buckle 5 includes an outer wrapping pipe 6, a pressure cap 501, and a flexible sealing material 502. When setting the sealing buckle 5, the outer wrapping pipe 6 is first set according to step two. The inner end of the outer wrapping pipe 6 is welded to the connection end 302 of the special tee 3. The flexible sealing material 502 is set at the outer end of the outer wrapping pipe 6. Then, the two arc-shaped cover plates are installed opposite each other on the outside of the medium pipe 1, and the joint of the arc-shaped cover plates is welded to form the pressure cap 501. Then, the pressure cap 501 is connected to the outer end of the outer wrapping pipe 6.

[0080] By welding the outer wrapping pipe 3 6 at the connection end 2 302 to form a whole, the adjacent vulnerable pipe section of the medium pipe 1 is protected to prevent deformation and leakage of the adjacent vulnerable pipe section during the pressurized opening process. A flexible sealing material 502 is set to seal the outer end of the outer wrapping pipe 3 6 and the medium pipe 1. A pressure cap 501 is formed by welding two arc-shaped cover plates and then connecting and fixing the pressure cap 501 to the outer wrapping pipe 3 6.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction process for sealing pressurized pipe openings, characterized in that, Includes the following steps: Step 1: Perform thickness testing on the media pipeline to identify areas that can be welded; Step 2: Install two open sleeves opposite each other on the outside of the medium pipeline and weld them together to form the outer wrapped pipe 1. Weld the outer end of the outer wrapped pipe 1 to the medium pipeline. Step 3: Install the special tee on the outside of the medium pipeline, and weld the connecting end of the special tee to the inner end of the outer wrapped pipeline. Step 4: Based on whether the thickness of the medium pipeline on one side of the dedicated tee connection end 2 meets the welding requirements, perform the corresponding treatment; if it meets the welding requirements, repeat step 2 to form the outer wrapped pipeline 2, and weld the inner end of the outer wrapped pipeline 2 to the connection end 2 of the dedicated tee; if it does not meet the welding requirements, set a sealing buckle on the connection end 2 of the dedicated tee. Step 5: Perform pressurized tapping or pressurized sealing through the process port of the dedicated tee.

2. The construction process for sealing pressurized pipe openings according to claim 1, characterized in that, The sealing buckle includes a pressure cap and a flexible sealing material. When setting the sealing buckle, first set the flexible sealing material at the second connection end of the special tee, then install the two arc-shaped cover plates opposite each other on the outside of the medium pipeline, and weld the joint of the arc-shaped cover plates to form a pressure cap, and then connect the pressure cap and the second connection end of the special tee.

3. The construction process for sealing pressurized pipe openings according to claim 1, characterized in that, The sealing buckle includes an outer wrapping pipe (three), a pressure cap, and flexible sealing material. When setting the sealing buckle, first set the outer wrapping pipe (three) according to step two, weld the inner end of the outer wrapping pipe (three) to the connection end two of the special tee, set the flexible sealing material at the outer end of the outer wrapping pipe (three), then install the two arc-shaped cover plates opposite each other on the outside of the medium pipeline, and weld the joint of the arc-shaped cover plates to form a pressure cap, and then connect the pressure cap to the outer end of the outer wrapping pipe (three).

4. The construction process for sealing pressurized pipe openings according to claim 1, characterized in that, The special tee includes an upper component and a lower component. In step three, the upper component and the lower component are first installed on the outside of the medium pipeline, and then the joint of the upper component and the lower component is welded.

5. The construction process for sealing pressurized pipe openings according to claim 1, characterized in that, In step five, a clamp valve and a hole opener are installed on the process port of the dedicated tee, and the hole opener is used to open the medium pipeline.

6. The construction process method for sealing pressurized pipe openings according to claim 5, characterized in that, After making the hole using the hole opener in step five, close the clamp valve, remove the hole opener and install the plug, and operate the plug to seal the medium pipeline.

7. The construction process method for sealing pressurized pipe openings according to claim 5, characterized in that, After making the hole using the hole opener in step five, close the clamp valve, remove the hole opener and install the lower plug, and operate the lower plug to seal the process port of the special tee.

8. The construction process for sealing pressurized pipe openings according to claim 7, characterized in that, In step five, the cap at the lower end of the plug is lowered to the process port of the special tee for sealing. The plugging screw at the process port of the special tee is removed and the limiting screw is installed to limit the cap.

9. The construction process for sealing pressurized pipe openings according to claim 6, characterized in that, The occluder is a balloon occluder.

10. The construction process for sealing pressurized pipe openings according to claim 1, characterized in that, The thickness was measured using ultrasonic testing.

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