Leaking stoppage device for pipeline flange

Abstract

The utility model relates to the technical field of flange leaking stoppage, in particular to a pipeline flange leaking stoppage device which comprises a first limiting piece, a second limiting piece and a filling bag, the first limiting piece and the second limiting piece are each of a hollow structure, and the filling bag is arranged in the hollow area of the first limiting piece and the hollow area of the second limiting piece. According to the leaking stoppage device for the pipeline flange, compared with the prior art, through the arrangement of the filling bag and the limiting pieces, the phenomenon that when the surface of a pipeline is uneven, glue leaks at the uneven position of a concave part during glue injection is avoided, through the arrangement of the filling bag, the leakage of the concave part is prevented, and the leakage stoppage effect is improved. After glue injection is completed, if the leaking stoppage effect is not achieved, rework and remedy operation can be conducted, the filler does not make direct contact with the flange, the leaking stoppage device can be detached, an existing flange structure does not need to be damaged, the shutdown time and the maintenance cost which are possibly needed are reduced, and therefore production efficiency is improved, and remarkable economic benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange leakage blocking, in particular to a leakage blocking device for a pipeline flange. Background Art

[0002] During the extraction of oil and natural gas, leakage of metal pipe flanges in sour gas fields is a common problem. Due to the presence of harmful gases such as hydrogen sulfide in sour gas fields, leakage of pipe flanges will not only lead to a waste of energy resources, but also cause serious environmental pollution and safety risks. Existing leak-plugging technologies and their shortcomings: Currently, some leak-plugging technologies have been applied to the repair of pipe flange leakage, such as the use of rubber sealing rings, metal gaskets, etc. However, these technologies have some shortcomings when dealing with leakage of metal pipe flanges in sour gas fields, such as unsatisfactory sealing effect, poor corrosion resistance, and short service life. In order to solve the above problems, there are many leak-plugging devices in the prior art;

[0003] The existing flange plugging device has a glue injection port on the flange clamp 1, a glue injection groove around the inner side of the glue injection port, a glue injection port outer nut on the outer side of the glue injection port, and a matching glue injection port bolt movably arranged on the outer nut of the glue injection port. The inner side edges of the flange clamp 1 and the flange clamp 2 are both provided with partitions; the flange leakage position can be fixed first and then glue is injected. After the glue injection is completed, the entire device can be removed. However, if the pipeline surface is uneven, glue will leak from the concave and uneven place during glue injection; and if the plugging effect is not achieved after the glue injection, rework and remedial operations cannot be performed. Utility Model Content

[0004] The utility model aims to solve the problem that when the existing flange leakage plugging device encounters an uneven pipeline surface, the sealing effect of the uneven part is difficult to ensure, which leads to glue leakage from the concave and uneven part during glue injection, and provides a pipeline flange leakage plugging device.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A leak-proof device for a pipe flange comprises a first limiter, a second limiter and a filling bag, wherein the first limiter and the second limiter are both hollow structures, the filling bag is arranged in the hollow area of ​​the first limiter and the second limiter, the filling bag is connected to the first limiter, and the first limiter and the second limiter are butt-jointed.

[0007] The present solution includes a first stopper, a second stopper and a filling capsule, wherein the first stopper and the second stopper are used to limit the filling capsule so that the filling capsule can wrap the leaking part of the pipeline instead of expanding outward. The function of the filling capsule is to fill the filling capsule with liquid or gas so that the filling capsule can expand and wrap the leaking part of the pipeline. With this filling capsule form, there is no longer any restriction on the flatness of the pipeline, which greatly improves the applicability of the leak-proof device. The filling capsule can adapt to the shape of the pipeline during the filling process so that there is no gap between the filling capsule and the pipeline. The first stopper and the second stopper are hollow structures, and the filling capsule is arranged in the hollow area of ​​the first stopper and the second stopper. The hollow structure design of the first stopper and the second stopper provides space for the filling capsule, so that the filling capsule can expand when subjected to pressure and fit closely to the leaking point of the pipeline flange to enhance the leak-proof effect. The filling capsule is connected to the first stopper, and the first stopper and the second stopper are butted, so that the device can adapt to pipeline flanges of different shapes and sizes, thereby improving the versatility and adaptability of the device.

[0008] Compared with the prior art, a leak-proof device for a pipe flange adopts the present solution, which solves the problem of glue leakage in uneven recessed areas when injecting glue when the pipe surface is uneven by setting a filling bag and a limiter. Moreover, by setting the filling bag, if the leak-proof effect is not achieved after the injection, rework and remedial operations can be performed, and the filling material does not directly contact the flange. The leak-proof device can be removed without destroying the existing flange structure, and the existing flange will not be damaged during removal. Since the leak-proof device has a simple structure and clear connections between components, it can be easily and quickly inspected and replaced during daily inspection and maintenance, reducing maintenance costs and time. The design of the leak-proof device simplifies the traditional leak-proof process, reduces possible downtime and maintenance costs, thereby improving production efficiency and having significant economic benefits.

[0009] As a preferred solution of the present utility model, the first limiting member is connected to a filling bag injection tube, and the filling bag injection tube passes through the first limiting member and is connected to the filling bag.

[0010] This solution recommends that the first stopper is connected to the filling capsule injection tube, and the filling capsule injection tube passes through the first stopper and is connected to the filling capsule, which is convenient for the filling operation of the filling capsule. The existence of the filling capsule injection tube enables the operator to more conveniently inject the filling material into the filling capsule. Through the injection tube, the amount of filling material and the filling speed can be accurately controlled, thereby ensuring that the filling capsule can effectively play a sealing role; improve the sealing efficiency, through the filling capsule injection tube, the filling capsule can be filled without disassembling the device, thereby avoiding the decline in sealing performance caused by frequent disassembly and installation, and improving the sealing efficiency; increase the flexibility of the device, and the design of the filling capsule injection tube makes the device more flexible when dealing with pipeline flanges of different sizes and shapes. By adjusting the size and shape of the filling capsule, it can adapt to a wider range of pipeline flanges, improving the versatility and practicality of the device; reduce the risk of leakage, because the filling capsule injection tube is directly connected to the filling capsule, the connection links are reduced, thereby reducing the risk of leakage caused by loose connection. At the same time, by accurately controlling the amount and speed of the filling material, the possibility of leakage can be further reduced.

[0011] As a preferred solution of the present utility model, the filling bag injection tube is arranged in the middle of the filling bag.

[0012] This solution recommends that the filling bag injection tube be arranged in the middle of the filling bag, and the filling is uniform. When the filling material is injected into the filling bag through the filling bag injection tube, since the injection tube is located in the middle of the filling bag, the filling material can be more evenly distributed to various parts of the filling bag. This ensures that the filling bag can evenly fit the surface of the pipeline flange when it expands, and improves the sealing effect; reduces the filling time. Since the filling bag injection tube is located in the middle, the filling material can directly enter the central area of ​​the filling bag, and reduces the flow distance of the filling material in the filling bag. This helps to speed up the filling speed, reduce the filling time, and improve work efficiency; improve the sealing stability, and the filling bag injection tube is arranged in the middle, which can ensure that all parts of the filling bag can be fully supported and fixed when it expands. This helps to prevent the filling bag from being deformed or displaced when it is subjected to pressure or vibration, thereby improving the stability of the seal; simplify the operation process, and the injection tube is arranged in the middle of the filling bag, so that the operator can find the injection point more conveniently without having to find a suitable insertion position on the filling bag. This simplifies the operation process, reduces the difficulty of operation, and improves work efficiency.

[0013] As a preferred solution of the present utility model, both the first limiting member and the second limiting member are semi-oblate spheres.

[0014] This solution recommends that both the first and second limiters are semi-oblate spheres. The semi-oblate sphere design enables the first and second limiters to adapt to most circular or arc-shaped pipe flange shapes. This design allows the device to be easily installed on the pipe flange, improving the versatility and adaptability of the device. The semi-oblate sphere structure can provide uniform pressure distribution during docking, ensuring that the filling bag can evenly fit the surface of the pipe flange when under pressure. This helps prevent leakage and improves the sealing effect. The semi-oblate sphere design makes the docking of the first and second limiters simple and convenient. Since the semi-oblate sphere structure can provide better fit and pressure distribution, it can more effectively prevent leakage of the pipe flange. This helps maintain the stability and safety of the pipeline system. Compared with a complete sphere or other complex shapes, the semi-oblate sphere structure is simpler and can reduce the use of materials during the manufacturing process. This helps to reduce costs and improve economic benefits.

[0015] As a preferred solution of the utility model, the volume of the filling capsule after being filled is equal to the sum of the volumes of the hollow areas of the first limiting member and the second limiting member.

[0016] This solution recommends that the volume of the filling capsule after filling is equal to the sum of the volumes of the hollow areas of the first limiter and the second limiter. When not filled, the volume of the filling capsule in an overflowing state will be greater than the sum of the volumes of the hollow areas of the first limiter and the second limiter. Since the volume of the filling capsule after filling is limited by the hollow area of ​​the limiter, it will expand and fit tightly on the surface of the pipe flange. At this time, the volume of the filling capsule after filling is equal to the sum of the volumes of the hollow areas of the first limiter and the second limiter. The additional pressure generated by this expansion helps to ensure a good seal between the filling capsule and the pipe flange, thereby effectively preventing leakage. Since the volume of the filling capsule can be changed, this design enables the device to adapt to pipe flanges of different sizes. Even if the size of the pipe flange changes slightly, the filling capsule can adapt to and maintain good sealing performance by adjusting its filling amount. In the pipeline system, due to changes in factors such as temperature and pressure, the pipe flange may have slight displacement or deformation, or the pipe surface may be uneven. Since the volume of the filling bladder is larger than the hollow area of ​​the stopper, the filling bladder has a certain self-compensation ability and can adapt to these changes to a certain extent, maintaining the stability of the sealing performance. The expansion state of the filling bladder makes the contact between it and the pipe flange closer, reducing the wear and friction caused by vibration or external forces. This helps to extend the service life of the device and reduce the frequency of maintenance and replacement.

[0017] As a preferred solution of the present utility model, the filling bag is a rubber material component.

[0018] This proposal recommends that the filling bag is a rubber material component. The rubber material has excellent elasticity and recovery, which enables the filling bag to quickly return to its original state after being subjected to pressure or deformation. This characteristic enables the rubber filling bag to adapt to the irregular shape and slight changes of the pipe flange during the sealing process, and maintain a continuous and stable sealing effect. The rubber material generally has good medium resistance and can resist erosion and corrosion from a variety of chemicals. This allows the filling bag to maintain stable performance under different environmental and medium conditions, extending its service life. The rubber material can maintain good performance stability within a certain temperature range. This means that the filling bag can work normally at different operating temperatures and will not affect the sealing effect due to temperature changes. The rubber material is easy to process and mold, and filling bags suitable for different pipe flange shapes and sizes can be easily manufactured. In addition, the installation of the rubber filling bag is relatively simple, and does not require complex tools or techniques. Compared with other materials, the cost of rubber materials is relatively low, which makes the leak plugging device for pipe flanges using rubber filling bags more competitive in price.

[0019] As a preferred solution of the utility model, both sides of the first limiting member and the second limiting member are connected to connecting ears, the connecting ears are connected to bolts, and the bolts pass through the connecting ears on the same side.

[0020] This solution recommends that both sides of the first limiter and the second limiter are connected to connecting ears, and the connecting ears are connected to bolts, and the bolts pass through the connecting ears on the same side. The combination of the connecting ears and the bolts provides additional support and fixation for the connection between the first limiter and the second limiter. This connection method can effectively disperse and resist external forces or pressures, ensure that the device is not easily deformed or damaged during use, thereby improving the stability and reliability of the overall structure. Through the design of the bolt connection, the installation and removal process of the first limiter and the second limiter becomes simple and convenient. The operator only needs to use appropriate tools, such as a wrench or a screwdriver, to easily tighten or loosen the bolts, thereby realizing the rapid installation and removal of the limiter. The bolt connection allows the operator to adjust the tightness of the bolts according to actual needs. By appropriately adjusting the tightness of the bolts, the close fit between the first limiter and the second limiter can be ensured to achieve a better sealing effect. At the same time, this adjustability also enables the device to adapt to pipe flanges of different sizes and shapes, improving its versatility and adaptability. Since the bolt connection is detachable, when the device needs to be repaired or parts are replaced, the bolts can be easily removed and the damaged parts can be replaced with new ones. This helps to extend the service life of the device and reduce maintenance costs.

[0021] As a preferred solution of the utility model, the connecting ear is provided with two bolt holes, and the bolts pass through the bolt holes to connect the two connecting ears on the same side.

[0022] This solution recommends that the connecting ear has two bolt holes, and the bolts pass through the bolt holes to connect the two connecting ears on the same side. Through the connection of the two bolt holes and the bolts, the connection between the two connecting ears on the same side is more firm and stable. This double-bolt connection design can effectively disperse and resist external forces or pressures, reduce the risk of fracture or deformation at the connection, thereby improving the structural strength and stability of the entire device. The double-bolt connection design makes the installation process faster and more efficient. The operator can operate two bolts at the same time for tightening, which improves work efficiency. In addition, the double-bolt connection design also reduces errors and deviations that may occur during the installation process, and improves the accuracy and reliability of the installation.

[0023] As a preferred solution of the present utility model, the connecting ear is a square structure.

[0024] This proposal recommends that the connecting ear be a square structure. The design of the square structure enables the connecting ear to provide a larger contact area when bolted. This design can increase the friction between the bolt and the connecting ear, thereby improving the stability of the connection and preventing the device from loosening or falling off due to vibration or external forces during use. The connecting ear with a square structure usually has a simple and clear geometric shape, which makes it easier for operators to identify and locate the bolt holes, thereby simplifying the installation and removal process. In addition, the design of the square connecting ear is usually compatible with standard bolts and tools, making installation and removal more convenient and quick. The square structure has good structural strength and rigidity, and can effectively resist external forces and pressure. This design enables the connecting ear to maintain good stability when subjected to tension, compression or shear force, reducing the risk of device failure due to structural deformation or fracture.

[0025] As a preferred solution of the utility model, the filling capsule is an annular opening structure, and after the filling capsule is filled, two ends of the filling capsule abut against each other in the second limiting member.

[0026] This solution recommends that the filling capsule has an annular opening structure. After the filling capsule is filled, the two ends of the filling capsule abut against each other in the second limiter. The filling capsule with an annular opening structure does not require complicated operations or special tools during installation. The operator only needs to place the filling capsule in the second limiter and then fill it through the injection tube. After filling, the two ends of the filling capsule will automatically abut against each other to form a tight seal. This simple installation method not only improves work efficiency, but also reduces the difficulty of operation. This fitting method not only reduces the possibility of leakage, but also enhances the sealing performance of the device, enabling it to maintain a stable sealing state under various working environments.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0028] 1. A leak-proof device for a pipe flange adopts the present scheme. Compared with the prior art, the setting of a filling bag and a limiter can realize the phenomenon of glue leakage in the concave and uneven place when the pipe surface is uneven during glue injection. Moreover, through the setting of the filling bag, if the leak-proof effect is not achieved after the glue injection is completed, rework and remedial operations can be performed. The filling material does not directly contact the flange, and the leak-proof device can be removed without destroying the existing flange structure, and the existing flange will not be damaged during removal. Since the leak-proof device has a simple structure and clear connections between components, it can be easily and quickly inspected and replaced during daily inspection and maintenance, reducing maintenance costs and time. The design of the leak-proof device simplifies the traditional leak-proof process, reduces the possible downtime and maintenance costs, thereby improving production efficiency and having significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front cross-sectional structural schematic diagram of a leakage plugging device for a pipeline flange of the utility model;

[0030] Figure 2 It is a side structural schematic diagram of a leak-proof device for a pipeline flange according to the utility model;

[0031] Figure 3 It is a schematic diagram of a top cross-sectional structure of a leak-proof device for a pipeline flange of the utility model;

[0032] Figure 4 It is a side view structural diagram of an upper structural member of a leak plugging device for a pipeline flange according to the utility model;

[0033] Figure 5 It is a front view cross-sectional structural schematic diagram of a pipeline flange plugging device in use state according to the utility model;

[0034] Icons: 1-first limit piece, 2-second limit piece, 3-pipeline, 4-filling bladder, 5-filling bladder injection tube, 6-connecting ear, 7-bolt, 8-flange, 9-check valve, 10-injection device, 11-filling material. DETAILED DESCRIPTION

[0035] The utility model is described in detail below in conjunction with the accompanying drawings.

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] Example 1

[0039] like Figure 1 As shown, a leak-proof device for a pipe flange adopted in the utility model comprises a first limit member 1, a second limit member 2 and a filling bag 4, wherein the first limit member 1 and the second limit member 2 are both hollow structures, the filling bag 4 is arranged in the hollow area of ​​the first limit member 1 and the second limit member 2, the filling bag 4 is connected to the first limit member 1, and the first limit member 1 and the second limit member 2 are butt-jointed.

[0040] Specifically, Figures 1 to 5 As shown, the first stopper 1 and the second stopper 2 are sleeved on the flange 8 of the pipe 3. The first stopper 1 and the second stopper 2 are both semi-oblate spheroidal components, and the material can be engineering plastic or metal to ensure sufficient structural strength and corrosion resistance. The filling capsule 4 is made of elastic material. This embodiment recommends that the filling capsule 4 is a rubber material component. The rubber material has excellent elasticity and recovery, which enables the filling capsule 4 to quickly return to its original state after being subjected to pressure or deformation. This feature enables the rubber filling capsule 4 to adapt to the irregular shape and slight changes of the pipe flange during the sealing process, maintaining a continuous and stable sealing effect, such as Figure 5As shown, the volume of the filling bag 4 after filling is equal to the sum of the volumes of the first stopper 1 and the second stopper 2. The additional pressure generated by the expansion helps to ensure a good seal between the filling bag 4 and the flange 8 of the pipeline 3, thereby effectively preventing leakage. The first stopper 1 is connected to the filling bag injection tube 5, and the filling material 11 is filled into the filling bag 4 through the filling bag injection tube 5. The filling material 11 can be liquid or gas, so as to adjust its volume and sealing performance. The filling bag injection tube 5 passes through the first stopper 1 and is connected to the filling bag 4. The filling bag injection tube 5 is arranged in the middle of the filling bag 4. Since the filling bag injection tube 5 is located in the middle of the filling bag 4, the filling material can be more evenly distributed to various parts of the filling bag 4. This ensures that the filling bag 4 can evenly fit the surface of the flange 8 of the pipeline 3 when it expands, thereby improving the sealing effect. At the same time, the filling bag 4 is a ring-shaped opening structure. After the filling bag 4 is filled, the two ends of the filling bag 4 abut against each other in the second stopper 2.

[0041] Square connecting ears 6 are connected to both sides of the first limiting member 1 and the second limiting member 2. The square structure design enables the connecting ears 6 to provide a larger contact area when connected with the bolt 7, thereby improving the stability of the connection. The connecting ears 6 are connected with the bolt 7, and the bolt 7 passes through the connecting ears 6 on the same side. This embodiment recommends that the connecting ears 7 have two bolt holes, and the bolt 7 passes through the bolt holes to connect the two connecting ears 7 on the same side. Through the connection of the two bolt holes and the bolt 7, the connection between the two connecting ears 6 on the same side is more firm and stable.

[0042] Example 2

[0043] The present embodiment adopts a leakage plugging device for a pipe flange as described in Embodiment 1, comprising the following steps:

[0044] like Figure 5 As shown,

[0045] S1. Preparation work, ensuring that the filling capsule 4 and the filling material 11 are both high pressure compatible; this is to ensure that the components of the filling capsule 4 and the filling material 11 do not change during pumping, thereby affecting the plugging effect.

[0046] S2, sleeve the first limiter 1 and the second limiter 2 on the flange 8 of the pipeline 3, and then fix the first limiter 1 and the second limiter 2 on the pipeline 3 by installing bolts 7;

[0047] S3, connecting a one-way valve 9 to the top of the filling bladder injection tube 5, and then connecting the filling bladder injection tube 5 to the injection device 10;

[0048] S4. In this embodiment, the filler 11 is preferably an epoxy filler. The epoxy filler is prepared by mixing appropriate amounts of epoxy resin and curing agent to ensure uniform mixing to form the epoxy filler.

[0049] S5, start the glue injection system, inject the epoxy filler into the filling capsule 4, and the ductility of the filling capsule 4 makes it fit the entire flange area after being squeezed by the epoxy glue;

[0050] S6. According to the curing time and temperature requirements of the epoxy glue, wait for a certain period of time, and remove the glue injection system after the epoxy filler solidifies.

[0051] Example 3

[0052] In order to reduce the cost, in this embodiment, the epoxy filler may not be used, and nitrogen may be directly injected into the filling bag 4 to ensure the pressure of the rubber bag 4. At this time, the one-way valve 9 is not removed.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leak-proof device for a pipeline flange, characterized in that: The invention comprises a first limiting member (1), a second limiting member (2) and a filling capsule (4), wherein the first limiting member (1) and the second limiting member (2) are both hollow structures, the filling capsule (4) is arranged in the hollow areas of the first limiting member (1) and the second limiting member (2), the filling capsule (4) is connected to the first limiting member (1), the first limiting member (1) and the second limiting member (2) are butt-jointed, the first limiting member (1) and the second limiting member (2) are both engineering plastic components or metal components, and when not filled, the volume of the filling capsule (4) in an overflowing state is greater than the sum of the volumes of the hollow areas of the first limiting member (1) and the second limiting member (2), and the volume of the filling capsule (4) after being filled is equal to the sum of the volumes of the hollow areas of the first limiting member (1) and the second limiting member (2).

2. A leak-proof device for a pipe flange according to claim 1, characterized in that: The first stopper (1) is connected to a filling bladder injection tube (5), and the filling bladder injection tube (5) passes through the first stopper (1) and is connected to the filling bladder (4).

3. A leak-proof device for a pipe flange according to claim 2, characterized in that: The filling sac injection tube (5) is arranged in the middle of the filling sac (4).

4. A leak-proof device for pipeline flange according to claim 1, characterized in that: The first limiting member (1) and the second limiting member (2) are both semi-oblate spheres.

5. A leak-proof device for pipeline flange according to claim 1, characterized in that: The filling bag (4) is a rubber material component.

6. A leak-proof device for pipeline flange according to claim 1, characterized in that: Both sides of the first limiting member (1) and the second limiting member (2) are connected to connecting ears (6), the connecting ears (6) are connected to bolts (7), and the bolts (7) pass through the connecting ears (6) on the same side.

7. A leak-proof device for pipeline flange according to claim 6, characterized in that: The connecting ear (6) is a square structure.

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