Isolation device, assembly method of isolation device and isolation method

Abstract

The invention belongs to the technical field of pipeline isolation devices, and discloses an isolation device, an assembly method of the isolation device and an isolation method. The isolation device comprises an isolation bag, a first sealing assembly, a second sealing assembly and a connecting piece, the isolation bag is of a hollow cylindrical structure with the two ends provided with a first opening and a second opening, the isolation bag can stretch into a third opening formed in the circumferential wall of the first pipeline and is placed on the first pipeline, and the first sealing assembly comprises a first fixing base for fixing the edge of the first opening; the first fixing base is provided with a guide channel in the axial direction of the isolation bag, an air inlet hole is formed in the side wall of the guide channel and communicates with the interior of the isolation bag, and the end of the guide channel can be connected with an air source to inflate the isolation bag so that the isolation bag can abut against the inner wall of the first pipeline to block the first pipeline. The second sealing assembly comprises a second fixing base for fixing the edge of the second opening, the first end of the connecting piece is limited in the guide channel to slide, the second end of the connecting piece is connected with the second fixing base, and the sealing performance of the isolation bag is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline isolation devices, and in particular to an isolation device, an assembling method of the isolation device, and an isolation method. Background Art

[0002] In the field of liquefied gas ship transportation, the cargo hold safety valve of the liquefied gas ship must be equipped with necessary isolation measures. Usually, an isolation bag is set in the pipeline between the cargo hold and the safety valve. The isolation bag is inflated to achieve the purpose of isolating the cargo hold and the safety valve.

[0003] At present, the sealing performance of the isolation bag is insufficient, the deformation is irregular after inflation, the fit with the pipeline is poor, the elasticity drops sharply after use, and it needs to be replaced frequently. This not only increases the cost of a single replacement, but also extends the non-operating time of the liquefied gas ship due to maintenance, and both economy and efficiency are restricted.

[0004] Therefore, an isolation device, an assembling method of the isolation device, and an isolation method are urgently needed to solve the above problems. Summary of the Invention

[0005] The first purpose of the present invention is to provide an isolation device that can effectively improve the sealing of the isolation bag, the deformation of the isolation bag is regular after inflation, the fit between the isolation bag and the pipeline is optimized, leakage problems are avoided, working stability and reliability are enhanced, installation and operation are convenient, reusable, and maintenance costs are reduced.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An isolation device, the isolation device comprising:

[0008] The isolation sac is a hollow cylindrical structure with a first opening and a second opening at each end. The isolation sac can be inserted into the first pipe through a third opening provided on the peripheral wall of the first pipe and placed in the first pipe.

[0009] a first sealing assembly comprising a first fixing seat mounted at the first opening, an edge of the first opening being fixed to the first fixing seat, the first fixing seat being provided with a guide channel along the axial direction of the isolation bag, an air inlet being provided on a sidewall of the guide channel and communicating with the interior of the isolation bag, an end of the guide channel being capable of being connected to an air source to inflate the isolation bag so that the isolation bag abuts against the inner wall of the first pipe to seal the first pipe;

[0010] A second sealing assembly includes a second fixing seat installed at the second opening, and an edge of the second opening is fixed to the second fixing seat;

[0011] A connecting member is arranged in the isolation bag, a first end of the connecting member is restricted to slide in the guide channel, and a second end of the connecting member is connected to the second fixing seat.

[0012] As an optional solution for an isolation device, a first port and a second port are respectively provided at both ends of the guide channel, the first port can be connected to the gas source, the first end of the connecting piece extends into the second port, and the first end of the connecting piece is provided with a limit piece, the maximum outer dimension of the limit piece is larger than the inner diameter of the second port and smaller than the inner diameter of the guide channel.

[0013] As an optional solution of the isolation device, the first fixing seat includes a first protrusion and a first platform portion, and the first sealing assembly further includes a first annular compression member, the first annular compression member is sleeved on the first protrusion, and the edge of the first opening is clamped between the first annular compression member and the first platform portion and compressed by the first annular compression member; and / or;

[0014] The second fixing seat includes a second protrusion and a second platform portion, and the second sealing assembly also includes a second annular compression member, which is sleeved on the second protrusion. The edge of the second opening is clamped between the second annular compression member and the second platform portion and is compressed by the second annular compression member.

[0015] As an optional solution of the isolation device, the inner ring surface of the first annular compression member is provided with a first internal thread, and the circumferential surface of the first protrusion is provided with a first external thread, the first internal thread cooperates with the first external thread, and the first annular compression member is capable of rotating relative to the first protrusion and moving axially along the first protrusion; and / or;

[0016] The inner ring surface of the second annular clamping piece is provided with a second internal thread, and the circumferential surface of the second protrusion is provided with a second external thread. The second internal thread cooperates with the second external thread. The second annular clamping piece can rotate relative to the second protrusion and move axially along the second protrusion.

[0017] As an optional solution of the isolation device, the first sealing assembly further includes a first elastic gasket, the first elastic gasket being sandwiched between the first annular pressing member and the edge of the first opening; and / or;

[0018] The second sealing assembly further includes a second elastic gasket, which is sandwiched between the second annular pressing member and the edge of the second opening.

[0019] As an optional solution of the isolation device, the isolation capsule has a multi-layer structure.

[0020] As an optional solution for an isolation device, the isolation bag comprises a first layer, a second layer, a third layer and a fourth layer from the inside to the outside, wherein the first layer is a first rubber layer, the second layer is an aramid fiber braided layer, the third layer is a second rubber layer, and the fourth layer is a silicone layer.

[0021] As an optional solution of the isolation device, the outer surface of the isolation bag is provided with annular convex patterns.

[0022] The second object of the present invention is to provide an assembly method for an isolation device, which is applied to the above-mentioned isolation device to make the isolation bag deform regularly and fit the inner wall of the pipeline, thereby improving the sealing and fit, and the structure is compact and reliable, easy to install and reuse.

[0023] To achieve this object, the present invention adopts the following technical solutions:

[0024] An assembling method for an isolation device is applied to the above-mentioned isolation device, and the assembling method for the isolation device comprises the following steps:

[0025] S1: The edge of the first opening of the isolation capsule is fixed to the first fixing seat, and the edge of the second opening of the isolation capsule is fixed to the second fixing seat;

[0026] S2: The first end of the connecting member passes through the guide channel, and the second end of the connecting member is connected to the second fixing seat.

[0027] The third object of the present invention is to provide an isolation method, which is applied to the above-mentioned isolation device, significantly improves the isolation sealing and reliability, is suitable for pipes of different inner diameters, can be repeatedly inflated and used, and reduces maintenance costs and difficulty of use.

[0028] To achieve this object, the present invention adopts the following technical solutions:

[0029] An isolation method is applied to the above-mentioned isolation device, and the isolation method comprises the following steps:

[0030] S100: inserting the isolation device through the third opening provided on the peripheral wall of the first pipe and placing the isolation device in the first pipe;

[0031] S200: The guide channel is connected to the air source, and air is inflated into the isolation bag to a preset pressure, so that the inflated isolation bag abuts against the inner wall of the first pipe.

[0032] Beneficial effects:

[0033] The isolation device disclosed in the present invention, when in use, the edge of the first opening of the isolation bag is fixed on the first fixing seat, the edge of the second opening of the isolation bag is fixed on the second fixing seat, the first end of the connector is inserted into the guide channel, the second end of the connector is connected to the second fixing seat, the isolation bag is placed in the first pipe, the end of the guide channel is connected to the gas source to inflate the isolation bag, a part of the gas is filled into the isolation bag through the air inlet hole on the side wall of the guide channel, and the other part of the gas pushes the connector along the guide channel inside the guide channel and pushes the second fixing seat to move, increasing the axial length of the isolation bag. When the connector moves to the end of the guide channel away from the gas source, the axial length of the isolation bag is fixed. At this time, all the gas is filled into the isolation bag, the radial length of the isolation bag is increased, and the isolation bag can better abut the inner wall of the first pipe. The isolation device can effectively improve the sealing of the isolation bag, the deformation of the isolation bag after inflation is regular, the fit between the isolation bag and the first pipe is optimized, leakage problems are avoided, working stability and reliability are enhanced, installation and operation are convenient, and it is reusable, reducing maintenance costs.

[0034] The assembly method of the isolation device disclosed in the present invention is applied to the above-mentioned isolation device, the edge of the first opening of the isolation bag is fixed on the first fixing seat, and the edge of the second opening of the isolation bag is fixed on the second fixing seat; the first end of the connecting piece is inserted into the guide channel arranged along the axial direction of the isolation bag on the first fixing seat, and the second end of the connecting piece is connected to the second fixing seat, so that the isolation bag is axially stretched and radially expanded at the same time after inflation, and the axial stretching remains unchanged when it reaches the preset length, and then expands radially, so that the isolation bag deforms regularly and fits the inner wall of the first pipe, thereby improving the sealing and fit, and the structure is compact and reliable, and is easy to install and reuse.

[0035] The isolation method disclosed in the present invention is applied to the above-mentioned isolation device, and the isolation device is extended from a third opening provided on the peripheral wall of the first pipe and placed in the first pipe; the guide channel is connected to the air source, and the isolation bag is inflated to a preset pressure. The inflated isolation bag abuts against the inner wall of the first pipe, which significantly improves the isolation sealing and reliability. It is easy to operate and does not require complicated adjustments. It is suitable for pipes of different inner diameters and can be repeatedly inflated and used, reducing maintenance costs and difficulty of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a first schematic diagram of an isolation device provided by an embodiment of the present invention;

[0037] Figure 2 is a second schematic diagram of an isolation device provided by an embodiment of the present invention;

[0038] Figure 3 Schematic diagram of an isolation capsule provided in an embodiment of the present invention.

[0039] In the picture:

[0040] 100, first pipe; 200, second pipe; 300, first flange; 301, blind plate hole;

[0041] 1. Isolation capsule; 101. First layer; 102. Second layer; 103. Third layer; 104. Fourth layer; 105. Annular convex pattern;

[0042] 11. First opening; 12. Second opening;

[0043] 2. First sealing assembly;

[0044] 210, guide channel; 2101, air inlet; 2102, first port; 2103, second port;

[0045] 21. First fixing seat; 211. First protrusion; 212. First platform;

[0046] 22. First annular pressing member; 23. First elastic gasket;

[0047] 3. Second sealing assembly;

[0048] 31. Second fixing seat; 311. Second protrusion; 312. Second platform;

[0049] 32. Second annular pressing member; 33. Second elastic gasket;

[0050] 4. Connecting piece; 41. Limiting piece; 5. Connector; 6. Air intake pipe; 7. Connecting base; 71. Connecting hole. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0052] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0053] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0054] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0055] This embodiment discloses an isolation device, an isolation device assembly method and an isolation method, such as Figure 1-Figure 2 As shown, the isolation device includes an isolation bladder 1, a first sealing assembly 2, a second sealing assembly 3, and a connector 4. The isolation bladder 1 is a hollow cylindrical structure with a first opening 11 and a second opening 12 at each end. The isolation bladder 1 can be inserted through a third opening provided on the peripheral wall of the first pipe 100 and placed in the first pipe 100. The first sealing assembly 2 includes a first fixing seat 21 mounted at the first opening 11. The edge of the first opening 11 is fixed to the first fixing seat 21. The first fixing seat 21 defines a guide channel 210 along the axial direction of the isolation bladder 1. The sidewall of the guide channel 210 is provided with an air inlet 2101, which communicates with the interior of the isolation bladder 1. The end of the guide channel 210 can be connected to an air source to inflate the isolation bladder 1, allowing the isolation bladder 1 to abut against the inner wall of the first pipe 100 to seal the first pipe 100. The second sealing assembly 3 includes a second fixing seat 31 mounted at the second opening 12. The edge of the second opening 12 is fixed to the second fixing seat 31. The connecting member 4 is disposed in the isolation capsule 1 , a first end of the connecting member 4 is restricted to slide in the guide channel 210 , and a second end of the connecting member 4 is connected to the second fixing seat 31 .

[0056] The isolation device disclosed in this embodiment, when in use, the edge of the first opening 11 of the isolation bag 1 is fixed on the first fixed seat 21, the edge of the second opening 12 of the isolation bag 1 is fixed on the second fixed seat 31, the first end of the connector 4 is inserted into the guide channel 210, and the second end of the connector 4 is connected to the second fixed seat 31, the isolation bag 1 is placed in the first pipe 100, the end of the guide channel 210 is connected to the air source to inflate the isolation bag 1, a part of the gas is filled into the isolation bag 1 through the air inlet 2101 on the side wall of the guide channel 210, and the other part of the gas pushes the connector 4 to move along the guide channel 210 inside the guide channel 210, and pushes the second fixed seat 31 to move, thereby increasing the axial length of the isolation bag 1. When the connector 4 moves to the end of the guide channel 210 away from the air source, the axial length of the isolation bag 1 is fixed. At this time, all the gas is filled into the isolation bag 1, the radial length of the isolation bag 1 is increased, and the isolation bag 1 can better abut against the inner wall of the first pipe 100. The isolation device can effectively improve the sealing performance of the isolation bag 1. The isolation bag 1 deforms regularly after inflation, optimizes the fit between the isolation bag 1 and the first pipe 100, avoids leakage problems, enhances working stability and reliability, facilitates installation and operation, is reusable, and reduces maintenance costs.

[0057] The assembly method of the isolation device disclosed in this embodiment is applied to the above-mentioned isolation device, the edge of the first opening 11 of the isolation bag 1 is fixed on the first fixing seat 21, and the edge of the second opening 12 of the isolation bag 1 is fixed on the second fixing seat 31; the first end of the connecting member 4 is inserted into the guide channel 210 arranged along the axial direction of the isolation bag 1 on the first fixing seat 21, and the second end of the connecting member 4 is connected to the second fixing seat 31, so that the isolation bag 1 is axially stretched and radially expanded at the same time after inflation, and the axial stretching remains unchanged when it reaches the preset length, and then expands radially, so that the isolation bag 1 is deformed regularly and fits the inner wall of the first pipe 100, thereby improving the sealing and fit, and the structure is compact and reliable, which is convenient for installation and reuse.

[0058] The isolation method disclosed in this embodiment is applied to the above-mentioned isolation device. The isolation device is extended from the third opening provided on the peripheral wall of the first pipe 100 and placed in the first pipe 100; the guide channel 210 is connected to the air source, and the isolation bag 1 is inflated to a preset pressure. The inflated isolation bag 1 abuts against the inner wall of the first pipe 100, which significantly improves the isolation sealing and reliability. It is easy to operate and does not require complicated adjustments. It is suitable for pipes of different inner diameters and can be repeatedly inflated and used, reducing maintenance costs and difficulty of use.

[0059] like Figure 2As shown, the guide channel 210 is provided with a first port 2102 and a second port 2103 at both ends, respectively. The first port 2102 can be connected to a gas source, and the first end of the connector 4 extends into the second port 2103. The first end of the connector 4 is provided with a stopper 41, and the maximum outer dimension of the stopper 41 is larger than the inner diameter of the second port 2103, and smaller than the inner diameter of the guide channel 210. The guide channel 210 is provided with a first port 2102 and a second port 2103 at both ends, respectively. The first port 2102 can be connected to a gas source to ensure that gas is input into the isolation bag 1, and the first end of the connector 4 extends into the second port 2103. The maximum outer dimension of the stopper 41 is larger than the inner diameter of the second port 2103, and smaller than the inner diameter of the guide channel 210, which can prevent the connector 4 from escaping from the second port 2103, ensuring the stable movement of the connector 4 in the guide channel 210, and accurately controlling the displacement of the second fixing seat 31, thereby achieving effective adjustment of the axial length of the isolation bag 1 and ensuring the sealing performance and working reliability of the isolation device.

[0060] In this embodiment, the isolation device also includes a connector 5, which is arranged at the first port 2102 of the guide channel 210. The connector 5 can be connected to the gas source to ensure that the gas is stably input into the isolation bag 1. The reliable connectivity of the connector 5 is utilized to achieve rapid docking between the gas source and the device, thereby avoiding gas leakage during inflation and providing continuous power for the inflation of the isolation bag 1.

[0061] like Figure 2 As shown, the first fixing seat 21 includes a first protrusion 211 and a first platform 212. The first sealing assembly 2 also includes a first annular pressing member 22. The first annular pressing member 22 is sleeved on the first protrusion 211. The edge of the first opening 11 is clamped between the first annular pressing member 22 and the first platform 212 and is compressed by the first annular pressing member 22. The edge of the first opening 11 is clamped between the first annular pressing member 22 and the first platform 212 of the first fixing seat 21 and compressed to ensure that the edge of the first opening 11 fits tightly with the first platform 212, forming a reliable seal and preventing gas from leaking from the edge of the first opening 11. The structure is simple and easy to install, which facilitates the fixing and disassembly of the isolation bag 1 and improves the sealing stability and operational convenience of the isolation device.

[0062] like Figure 2As shown, the second fixing seat 31 includes a second protrusion 311 and a second platform 312, and the second sealing assembly 3 also includes a second annular pressing member 32. The second annular pressing member 32 is sleeved on the second protrusion 311, and the edge of the second opening 12 is clamped between the second annular pressing member 32 and the second platform 312 and compressed by the second annular pressing member 32. The edge of the second opening 12 is clamped between the second annular pressing member 32 and the second platform 312 of the second fixing seat 31 and compressed to ensure that the edge of the second opening 12 fits tightly with the second platform 312, forming a reliable seal and preventing gas from leaking from the edge of the second opening 12. The structure is simple and easy to install, which facilitates the fixing and removal of the isolation bag 1 and improves the sealing stability and operational convenience of the isolation device.

[0063] In other embodiments, the edge of the first opening 11 can be fixed to the first fixing seat 21 by fasteners, and the edge of the second opening 12 can be fixed to the second fixing seat 31 by fasteners, so that the two openings of the isolation bag 1 can be sealed, and no specific limitation is made here.

[0064] like Figure 2 As shown, the inner ring surface of the first annular pressing member 22 is provided with a first internal thread, and the circumferential surface of the first protrusion 211 is provided with a first external thread. The first internal thread cooperates with the first external thread, and the first annular pressing member 22 can rotate relative to the first protrusion 211 and move axially along the first protrusion 211. The first internal thread of the inner ring of the first annular pressing member 22 cooperates with the first external thread on the circumferential surface of the first protrusion 211. The first annular pressing member 22 can rotate and move axially along the first protrusion 211 to conveniently adjust the pressure on the edge of the first opening 11, ensuring that the edges of the first opening 11 of different thicknesses or materials are evenly and firmly compressed, thereby improving sealing reliability.

[0065] like Figure 2 As shown, the inner surface of the second annular clamping member 32 is provided with a second internal thread, and the circumferential surface of the second protrusion 311 is provided with a second external thread. The second internal thread cooperates with the second external thread, and the second annular clamping member 32 can rotate relative to the second protrusion 311 and move axially along the second protrusion 311. The second internal thread of the inner ring of the second annular clamping member 32 cooperates with the second external thread on the circumference of the second protrusion 311. The second annular clamping member 32 can conveniently adjust the pressure on the edge of the second opening 12 by rotating and moving along the axial direction of the second protrusion 311, ensuring that the edges of second openings 12 of different thicknesses or materials are evenly and firmly compressed, thereby improving sealing reliability. In addition, the threaded connection structure facilitates disassembly and repeated installation, enhancing the applicability and maintenance convenience of the isolation device.

[0066] like Figure 2As shown, the first sealing assembly 2 also includes a first elastic gasket 23, which is sandwiched between the first annular compression member 22 and the edge of the first opening 11. The first elastic gasket 23 is sandwiched between the first annular compression member 22 and the edge of the first opening 11. By utilizing the elastic deformation capability of the first elastic gasket 23, it can fill the slight gap between the edge of the first opening 11 and the first fixing seat 21 during compression, thereby enhancing the sealing performance. It also buffers the direct pressure of the first annular compression member 22, preventing damage to the edge of the first opening 11 caused by rigid extrusion, thereby extending the service life of the isolation sac 1. Furthermore, the elastic compensation function of the first elastic gasket 23 can accommodate a certain degree of installation error or vibration, thereby improving the sealing reliability and structural stability of the isolation device.

[0067] like Figure 2 As shown, the second sealing assembly 3 also includes a second elastic gasket 33, which is sandwiched between the second annular compression member 32 and the edge of the second opening 12. The second elastic gasket 33 is sandwiched between the second annular compression member 32 and the edge of the second opening 12. By utilizing the elastic deformation capability of the second elastic gasket 33, it can fill the slight gap between the edge of the second opening 12 and the second fixing seat 31 during compression, thereby enhancing sealing performance. It also buffers the direct pressure of the second annular compression member 32, preventing damage to the edge of the second opening 12 caused by rigid extrusion, thereby extending the service life of the isolation sac 1. Furthermore, the elastic compensation function of the second elastic gasket 33 can accommodate a certain degree of installation error or vibration, thereby improving the sealing reliability and structural stability of the isolation device.

[0068] In this embodiment, the first elastic gasket 23 and the second elastic gasket 33 are both annular gaskets. The annular structure facilitates sleeve installation on the first protrusion 211 and the second protrusion 311, thereby providing a more secure fit with the first annular pressing member 22, the second annular pressing member 32, and the first and second fixing seats 21 and 31. This facilitates convenient and stable installation, enhancing the sealing reliability and structural coordination of the isolation device.

[0069] Specifically, the first platform portion 212 is embedded in the first opening 11, and the edge of the first opening 11 overlaps the surface of the first platform portion 212. The annular first elastic gasket 23 is sleeved on the first protrusion 211, and then the first annular clamping member 22 is sleeved on the first protrusion 211 and threadedly connected to the first protrusion 211. The first annular clamping member 22 rotates relative to the first protrusion 211 and moves along the axial direction of the first protrusion 211, and abuts against the first elastic gasket 23, pressing the edge of the first opening 11 to the surface of the first platform portion 212 to ensure the sealing at the first opening 11.

[0070] Similarly, the second platform portion 312 is embedded in the second opening 12, and the edge of the second opening 12 overlaps the surface of the second platform portion 312. The annular second elastic gasket 33 is sleeved on the second protrusion 311, and then the second annular clamping member 32 is sleeved on the second protrusion 311 and threadedly connected to the second protrusion 311. The second annular clamping member 32 rotates relative to the second protrusion 311 and moves axially along the second protrusion 311, and abuts against the second elastic gasket 33, pressing the edge of the second opening 12 to the surface of the second platform portion 312 to ensure the sealing at the second opening 12.

[0071] like Figure 3 As shown, the isolation bladder 1 has a multi-layer structure. The complementary properties of the different layers of material enhance overall performance, allowing the isolation bladder 1 to more reliably abut the inner wall of the first pipe 100 after inflation, improving the sealing effect. The multi-layer structure also increases the structural strength and deformation resistance of the isolation bladder 1, extending its service life, allowing it to withstand repeated inflation and squeezing, enhancing the stability and reliability of the isolation device, and reducing the risk of leakage and maintenance frequency caused by damage to the isolation bladder 1.

[0072] like Figure 3 As shown, the isolation bladder 1 comprises, from the inside out, a first layer 101, a second layer 102, a third layer 103, and a fourth layer 104. The first layer 101 is a first rubber layer, the second layer 102 is an aramid fiber braided layer, the third layer 103 is a second rubber layer, and the fourth layer 104 is a silicone layer. The first rubber layer provides basic elasticity and sealing, securing the aramid fiber braided layer and increasing the toughness of the isolation bladder 1. The aramid fiber braided layer enhances structural strength and tear resistance, preventing damage to the isolation bladder 1 during inflation. The second rubber layer further enhances elastic deformation and gas barrier properties, increasing the fit between the isolation bladder 1 and the first pipe 100. The silicone layer is wear-resistant, corrosion-resistant, and age-resistant, allowing the isolation bladder 1 to adhere tightly to the pipe wall after inflation, ensuring a reliable seal and adaptability to cryogenic gases. In this embodiment, the aramid fiber braided layer is made of Kevlar material. Kevlar material has high strength, tear resistance, light weight, high temperature resistance, chemical stability and corrosion resistance. It can improve the performance of the isolation bag 1, extend the life of the isolation bag 1, and reduce the risk of leakage.

[0073] like Figure 3 As shown, the outer surface of the isolation bladder 1 is provided with annular ridges 105. These ridges 105 increase the contact area and friction coefficient with the inner wall of the first pipe 100, ensuring a more secure contact between the isolation bladder 1 and the inner wall of the first pipe 100 after inflation. This prevents displacement due to vibration or pressure fluctuations, improving sealing stability. Furthermore, the structure of the ridges 105 enhances the barrier effect against gas leakage paths, further improving sealing reliability in conjunction with the multi-layer structure.

[0074] like Figure 1 As shown, the isolation device also includes an air inlet pipe 6, one end of which is connected to the connector 5 and the other end is connected to the gas source, and the air inlet pipe 6 is bendable. On the one hand, the air inlet pipe 6 of the isolation device is connected to the connector 5 at one end and to the gas source at the other end and is bendable, so that the air inlet pipe 6 can adapt to the space and direction of the first pipe 100, facilitating flexible arrangement and installation, avoiding obstruction of gas flow caused by bends in the first pipe 100, and ensuring stable ventilation between the gas source and the isolation bag 1. On the other hand, the bendable air inlet pipe 6 can buffer stress through deformation when the isolation bag 1 is inflated and displaced, preventing leakage or breakage at the connection between the connector 5 and the air inlet pipe 6 due to rigid pulling, thereby improving connection reliability.

[0075] In this embodiment, Figure 1 As shown, a second pipe 200 is provided at the third opening of the first pipe 100, communicating therewith. The extension direction of the second pipe 200 forms an angle with the extension direction of the first pipe 100, and the angle is greater than 0 degrees and less than 180 degrees. The end of the second pipe 200 is provided with a first flange 300. The isolation device also includes a connecting base 7, which is capable of overlapping with the first flange 300. The connecting base 7 is provided with a connecting hole 71, one end of which is connected to the air inlet pipe 6 and the other end is connected to the air source. In this embodiment, the angle is 90 degrees. In other embodiments, the angle can also be 45 degrees, 60 degrees, or 75 degrees, which are not specifically limited here.

[0076] In this embodiment, Figure 1 As shown, a blind plate hole 301 is provided on the first flange 300. A blind plate (not shown) is installed in the blind plate hole 301 to seal the second pipe 200. When the second pipe 200 is not in use, the blind plate is installed in the blind plate hole 301 to effectively seal the second pipe 200, preventing the passage of fluid or gas and preventing debris from entering the second pipe 200 and causing blockage or contamination. When the second pipe 200 needs to be activated, the blind plate can be removed to restore the passage of the second pipe 200, enhancing the flexibility and safety of the second pipe 200 and facilitating the inspection and maintenance of the second pipe 200.

[0077] In summary, the present embodiment discloses an assembling method of an isolation device, which is applied to the above-mentioned isolation device. The assembling method of the isolation device includes the following steps:

[0078] S1: The edge of the first opening 11 of the isolation capsule 1 is fixed to the first fixing seat 21, and the edge of the second opening 12 of the isolation capsule 1 is fixed to the second fixing seat 31;

[0079] S2: The first end of the connecting member 4 passes through the guide channel 210 , and the second end of the connecting member 4 is connected to the second fixing seat 31 .

[0080] In this embodiment, after step S2, the following steps are further included:

[0081] S21: The connector 5 is connected to the first port 2102 of the guide channel 210;

[0082] S22: Check the assembly status of each component to ensure that each component is stably connected;

[0083] S23: Perform an air tightness test on the isolation device. Use a hose to connect it to the connector 5. If the isolation bag 1 can be inflated normally and does not leak, and there is no problem with the air tightness, release the air.

[0084] In summary, this embodiment discloses an isolation method, which is applied to the above-mentioned isolation device. The isolation method includes the following steps:

[0085] S100: Insert the isolation device through the third opening provided on the peripheral wall of the first pipe 100 and place it inside the first pipe 100;

[0086] S200 : The guide channel 210 is connected to the air source, and air is inflated into the isolation bag 1 to a preset pressure. The inflated isolation bag 1 abuts against the inner wall of the first pipe 100 .

[0087] In this embodiment, before step S100, the following steps are further included:

[0088] S001: Open the blind plate blocking the second pipeline 200;

[0089] S002: Place the isolation capsule 1 in the second pipe 200 and change its direction at the connection point between the first pipe 100 and the second pipe 200 so that the central axis of the isolation capsule 1 is collinear with the central axis of the first pipe 100.

[0090] In this embodiment, after step S100 and before step S200, the following steps are further included:

[0091] S101: The connection base 7 and the first flange 300 are overlapped and fastened.

[0092] In this embodiment, after step S200, the following steps are further included:

[0093] S201: disassembling a component connected to the first pipeline 100 and performing maintenance or repair on the component;

[0094] S202: sealing the connection end between the first pipe 100 and the component;

[0095] S203: Stop inflating the isolation bag 1, release the gas in the isolation bag 1, and remove the isolation device;

[0096] S204: Reset the blind plate that blocks the second pipeline 200.

[0097] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Isolation device, characterized in that, The isolation device comprises: The isolation capsule (1) is a hollow cylindrical structure, with a first opening (11) and a second opening (12) provided at both ends, respectively. The isolation capsule (1) can be inserted through a third opening provided on the peripheral wall of the first pipe (100) and placed in the first pipe (100); A first sealing assembly (2) comprises a first fixing seat (21) mounted at the first opening (11), the edge of the first opening (11) being fixed to the first fixing seat (21), the first fixing seat (21) being provided with a guide channel (210) along the axial direction of the isolation bag (1), an air inlet hole (2101) being provided on the side wall of the guide channel (210), and the air inlet hole (2101) being communicated with the interior of the isolation bag (1), and an end of the guide channel (210) being connectable to an air source to inflate the isolation bag (1), so that the isolation bag (1) can abut against the inner wall of the first pipe (100) to block the first pipe (100); A second sealing assembly (3) comprises a second fixing seat (31) mounted at the second opening (12), wherein an edge of the second opening (12) is fixed on the second fixing seat (31); A connecting member (4) is arranged in the isolation bag (1), a first end of the connecting member (4) is restricted to slide in the guide channel (210), and a second end of the connecting member (4) is connected to the second fixing seat (31).

2. The isolation device according to claim 1, characterized in that The two ends of the guide channel (210) are respectively provided with a first port (2102) and a second port (2103), the first port (2102) can be connected to the gas source, the first end of the connecting member (4) extends into the second port (2103), and the first end of the connecting member (4) is provided with a limiting member (41), the maximum outer dimension of the limiting member (41) is greater than the inner diameter of the second port (2103) and smaller than the inner diameter of the guide channel (210).

3. The isolation device according to claim 1, characterized in that The first fixing seat (21) includes a first protruding portion (211) and a first platform portion (212), the first sealing assembly (2) further includes a first annular pressing member (22), the first annular pressing member (22) is sleeved on the first protruding portion (211), the edge of the first opening (11) is clamped between the first annular pressing member (22) and the first platform portion (212), and is pressed by the first annular pressing member (22); and / or; The second fixing seat (31) includes a second protruding portion (311) and a second platform portion (312), and the second sealing assembly (3) also includes a second annular pressing member (32), the second annular pressing member (32) is sleeved on the second protruding portion (311), and the edge of the second opening (12) is clamped between the second annular pressing member (32) and the second platform portion (312), and is pressed by the second annular pressing member (32).

4. The isolation device according to claim 3, characterized in that The inner ring surface of the first annular pressing member (22) is provided with a first internal thread, the circumferential surface of the first protrusion (211) is provided with a first external thread, the first internal thread cooperates with the first external thread, the first annular pressing member (22) is capable of rotating relative to the first protrusion (211) and moving along the axial direction of the first protrusion (211); and / or; The inner ring surface of the second annular pressing member (32) is provided with a second internal thread, and the circumferential surface of the second protrusion (311) is provided with a second external thread. The second internal thread cooperates with the second external thread, and the second annular pressing member (32) can rotate relative to the second protrusion (311) and move along the axial direction of the second protrusion (311).

5. The isolation device according to claim 3, characterized in that The first sealing assembly (2) further comprises a first elastic gasket (23), the first elastic gasket (23) being sandwiched between the first annular pressing member (22) and the edge of the first opening (11); and / or; The second sealing assembly (3) further comprises a second elastic gasket (33), wherein the second elastic gasket (33) is sandwiched between the second annular pressing member (32) and the edge of the second opening (12).

6. The isolation device according to any one of claims 1 to 5, characterized in that: The isolation capsule (1) has a multi-layer structure.

7. The isolation device according to claim 6, characterized in that The isolation sac (1) comprises, from the inside to the outside, a first layer (101), a second layer (102), a third layer (103) and a fourth layer (104), wherein the first layer (101) is a first rubber layer, the second layer (102) is an aramid fiber braided layer, the third layer (103) is a second rubber layer, and the fourth layer (104) is a silicone layer.

8. The isolation device according to any one of claims 1 to 5, characterized in that: The outer surface of the isolation capsule (1) is provided with an annular convex pattern (105).

9. A method for assembling an isolation device, applied to the isolation device according to claims 1 to 8, characterized in that: The assembly method of the isolation device comprises the following steps: S1: The edge of the first opening (11) of the isolation capsule (1) is fixed on the first fixing seat (21), and the edge of the second opening (12) of the isolation capsule (1) is fixed on the second fixing seat (31); S2: The first end of the connecting member (4) penetrates into the guide channel (210), and the second end of the connecting member (4) is connected to the second fixing seat (31).

10. An isolation method, applied to the isolation device according to claims 1 to 8, characterized in that: The isolation method comprises the following steps: S100: extending the isolation device through the third opening provided on the peripheral wall of the first pipe (100) and placing it in the first pipe (100); S200: The guide channel (210) is connected to the air source, and air is inflated into the isolation bag (1) to a preset pressure. The inflated isolation bag (1) abuts against the inner wall of the first pipe (100).

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