Pipeline sealing device and sealing method

Abstract

The invention provides a pipeline sealing device and a sealing method. The pipeline sealing device comprises a conveying pipeline, a body, a monitoring assembly and a sealing assembly, the sealing assembly comprises a sealing part and a fluid conveying pump, the monitoring assembly comprises a leakage sensor for monitoring whether the conveying pipeline leaks or not and a controller, the body is arranged outside the conveying pipeline in a sleeving mode, and the sealing part is arranged between the body and the conveying pipeline. The fluid conveying pump is arranged on the body, the sealing part is communicated with a fluid outlet of the fluid conveying pump, the fluid conveying pump is used for pumping fluid into the sealing part to enable the sealing part to expand and seal a leakage position, the leakage sensor is arranged in the body, and the leakage sensor and the fluid conveying pump are in communication connection with the controller. According to the pipeline sealing device and the sealing method, the problem that leakage of an existing conveying pipeline cannot be warned and blocked in time can be solved, and the safety and the reliability of the conveying pipeline are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline sealing, and in particular to a pipeline sealing device and a sealing method. Background Art

[0002] Carbon dioxide (CO2) gas pipelines are a key component of carbon capture, utilization and storage (CCUS) technology. They are widely used to capture CO2 emitted by industries and transport it safely and efficiently to storage sites or reuse facilities. These storage sites are usually located in underground geological structures, such as depleted oil and gas fields or deep saline formations, to ensure the long-term stable storage of CO2, reduce greenhouse gas emissions, and combat global warming. In industrial production, CO2, as a raw material, is also transported to chemical plants, food industries, etc. through pipelines for the manufacture of products such as urea, methanol, and carbonated beverages, reflecting its value in economic activities. In addition, CO2 gas pipelines also play an important role in building carbon markets and realizing carbon trading. Through pipeline transportation, large-scale carbon emission reduction credit transactions can be realized, carbon emission rights trading can be promoted worldwide, and a flexible path for achieving emission reduction targets can be provided.

[0003] However, CO2 gas pipelines, especially at pipeline joints, are the most prone to leakage due to various reasons such as mechanical vibration, temperature changes, material aging and construction defects. CO2 leakage will not only significantly reduce the economy and efficiency of projects such as CCUS, but more importantly, it poses a serious threat to the environment and human health. Large-scale leakage of CO2 will aggravate global warming and destroy the ecological balance. Under specific geological storage conditions, CO2 leakage may also pollute groundwater and affect the environmental quality of soil and groundwater. Existing CO2 gas pipelines usually add locking structures or sealing gaskets and other seals at the pipeline joints to reduce the risk of CO2 leakage. However, with the increase of sealing locking time and the continuous changes in the internal and external environmental conditions of the gas pipeline, the reliability of the locking structure and seals gradually decreases, eventually leading to leakage, and it is impossible to warn and block the leakage in time, which in turn causes major safety accidents. Summary of the invention

[0004] The main purpose of the present invention is to provide a pipeline sealing device, which can solve the problem that the existing transmission pipeline cannot timely warn and seal the leakage, and improve the safety and reliability of the transmission pipeline.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a pipeline sealing device, comprising a conveying pipeline, a main body, a monitoring component and a sealing component, the sealing component comprising a sealing part and a fluid conveying pump, the monitoring component comprising a leakage sensor and a controller for monitoring whether leakage occurs in the conveying pipeline, the main body is sleeved outside the conveying pipeline, the sealing part is arranged between the main body and the conveying pipeline, the fluid conveying pump is arranged on the main body, the sealing part is connected to the fluid outlet of the fluid conveying pump, the fluid conveying pump is used to pump fluid into the sealing part to expand the sealing part and seal the leakage position, the leakage sensor is arranged in the main body, and the leakage sensor and the fluid conveying pump are communicatively connected with the controller.

[0006] Furthermore, frames are provided at both ends of the sealing part, the frames are connected to the ends of the body, the sealing part includes a first sealing layer and a second sealing layer, a closed accommodating cavity is formed between the first sealing layer and the second sealing layer, and the accommodating cavity is connected to the fluid outlet of the fluid delivery pump.

[0007] Furthermore, there are multiple frames, and the multiple frames are arranged at intervals.

[0008] Furthermore, the sealing assembly also includes a limiting portion, which includes a first limiting member and a second limiting member, wherein the first limiting member wraps one side of the sealing portion, and the second limiting member wraps the other side opposite to the first limiting member.

[0009] Furthermore, the sealing assembly also includes a buffer portion, which is arranged between the limiting portion and the body.

[0010] Furthermore, the buffer portion includes a rubber block and a buffer spring. The buffer spring is arranged on the outer surface of the limiting portion, and the rubber block is arranged in a cavity at the center of the buffer spring.

[0011] Furthermore, a rubber block or a buffer spring is provided on the outer wall surface of the limiting portion.

[0012] Furthermore, there are multiple rubber blocks, and a clamping block is arranged between two adjacent rubber blocks.

[0013] Furthermore, a first connection portion is provided at the first end of the body, a second connection portion is provided at the second end of the body, and the pipeline sealing device also includes a reinforcing rib, one end of the reinforcing rib is connected to the first connection portion, and the other end is connected to the second connection portion.

[0014] Furthermore, a first fastener is provided at the first end of the body, a first connecting portion is provided on the first fastener, a second fastener is provided at the second end of the body, a second connecting portion is provided on the second fastener, and the pipe sealing device also includes a reinforcing rib, one end of the reinforcing rib is connected to the first connecting portion, and the other end of the reinforcing rib is connected to the second connecting portion.

[0015] Furthermore, the pipeline sealing device also includes a sealing component, which includes a hot-melt material layer and a heating part. The hot-melt material layer is arranged on the surface where the sealing part contacts the outer wall of the conveying pipeline. The heating part is arranged inside the sealing part or on the surface of the sealing part close to the limiting part. The heating part is communicatively connected to the controller.

[0016] Furthermore, the pipeline sealing device also includes a fastener, and the monitoring component also includes a buzzer, which is arranged on the body or the fastener, and the buzzer is communicatively connected with the controller.

[0017] According to another aspect of the present invention, a pipeline sealing method is provided, wherein the pipeline connection is sealed using the above-mentioned pipeline sealing device, and the method comprises:

[0018] Detect whether there is gas leakage in the pipeline;

[0019] When gas leakage is detected in the pipeline, the pipeline sealing device is controlled to start the sealing procedure;

[0020] The pipeline sealing device is controlled to stop after the pipeline sealing device completes sealing.

[0021] Furthermore, the step of controlling the pipeline sealing device to start the sealing procedure includes:

[0022] Control the buzzer to start;

[0023] The control fluid delivery pump starts.

[0024] Further, the step of controlling the pipeline sealing device to shut down after the pipeline sealing device completes sealing includes:

[0025] Obtaining the internal pressure of the sealing part;

[0026] Compare the internal pressure of the sealing part with the pressure threshold, and determine whether to control the fluid delivery pump to stop according to the comparison result;

[0027] If the internal pressure of the sealing part is greater than or equal to the pressure threshold, the fluid delivery pump is controlled to stop, and the buzzer is controlled to stop;

[0028] If the pressure inside the sealing part is less than the pressure threshold, the control fluid delivery pump continues to work.

[0029] Further, the step of controlling the pipeline sealing device to shut down after the pipeline sealing device completes sealing includes:

[0030] When no leaking gas is detected;

[0031] Control the fluid delivery pump to stop, and control the buzzer to stop.

[0032] The technical solution of the present invention is applied, the delivery pipeline is used to deliver gases such as carbon dioxide, the body is used as the main frame of the sealing device, and is used to carry the monitoring component and the sealing component, the fluid delivery pump is used to pump fluids such as air or water into the sealing part to expand the sealing part, and the sealing part is filled with fluids such as air or water and expands, and covers the surface of the delivery pipeline to block the leakage point on the delivery pipeline, the leakage sensor is arranged in the body, and is used to monitor the leakage of the material transported by the delivery pipeline, the leakage sensor and the fluid delivery pump are connected to the controller in communication, when the leakage sensor detects the leakage of the material, it immediately sends a signal to the controller, and the controller starts the alarm and blocking procedures after receiving the signal of the leakage sensor detecting the leakage, and controls the fluid delivery pump to fill the sealing part with fluids such as air or water, so that the sealing part expands to block the leakage point on the delivery pipeline. A pipeline sealing device provided by the present invention solves the problem that the existing delivery pipeline cannot timely alarm and automatically block the leakage by setting the monitoring component and the sealing component, and improves the safety and reliability of the delivery pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 A schematic diagram showing the overall structure of a pipeline sealing device according to an embodiment of the present invention is shown;

[0035] Figure 2 A schematic structural diagram of a delivery pipeline of a pipeline sealing device according to an embodiment of the present invention is shown;

[0036] Figure 3 A schematic structural diagram of a sealing portion of a pipeline sealing device according to an embodiment of the present invention is shown;

[0037] Figure 4 A schematic diagram showing a monitoring assembly of a pipeline sealing device according to an embodiment of the present invention;

[0038] Figure 5 An exploded view of a pipeline sealing device according to an embodiment of the present invention is shown;

[0039] Figure 6 An exploded view showing a buffer portion of a pipe sealing device according to an embodiment of the present invention; and

[0040] Figure 7 Another structural schematic diagram of the sealing portion of the pipeline sealing device according to an embodiment of the present invention is shown.

[0041] The above drawings include the following reference numerals:

[0042] 1. Conveying pipeline; 2. Main body; 3. Sealing part; 31. Frame; 32. First sealing layer; 33. Second sealing layer; 4. Fluid delivery pump; 51. First stopper; 52. Second stopper; 6. Buffering part; 61. Rubber block; 62. Buffer spring; 63. Clamp; 71. Controller; 72. Buzzer; 73. Battery; 74. Leakage sensor; 8. Fastener; 81. First fastener; 82. Second fastener; 83. First connecting part; 84. Second connecting part; 9. Reinforcing rib. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] See also Figures 1 to 7 As shown, the present invention provides a pipeline sealing device, which includes a conveying pipeline 1, a main body 2, a monitoring component and a sealing component, the sealing component includes a sealing part 3 and a fluid conveying pump 4, the monitoring component includes a leakage sensor 74 and a controller 71 for monitoring whether the conveying pipeline 1 leaks, the main body 2 is sleeved outside the conveying pipeline 1, the sealing part 3 is arranged between the main body 2 and the conveying pipeline 1, the fluid conveying pump 4 is arranged on the main body 2, the sealing part 3 is connected to the fluid outlet of the fluid conveying pump 4, the fluid conveying pump 4 is used to pump the fluid into the sealing part 3 to expand the sealing part 3 and seal the leakage position, the leakage sensor 74 is arranged in the main body 2, and the leakage sensor 74 and the fluid conveying pump 4 are communicatively connected with the controller 71.

[0045] In the above technical scheme, the delivery pipeline 1 is used to deliver gases such as carbon dioxide, the body 2 is used as the main frame of the sealing device, and is used to carry the monitoring component and the sealing component. The fluid delivery pump 4 is used to pump fluids such as air or water into the sealing part 3 to expand the sealing part 3. After the sealing part 3 is filled with fluids such as air or water and expands, it covers the surface of the delivery pipeline 1 to block the leakage points on the delivery pipeline 1. The leakage sensor 74 is arranged in the body 2 to monitor the leakage of the material transported by the delivery pipeline 1. The leakage sensor 74 and the fluid delivery pump 4 are connected to the controller 71 in communication. When the leakage sensor 74 detects the leakage of the material, it immediately sends a signal to the controller 71. After receiving the signal from the leakage sensor 74 detecting the leakage, the controller 71 starts the alarm and blocking procedures, and controls the fluid delivery pump 4 to fill the sealing part 3 with fluids such as air or water, so that the sealing part 3 expands to block the leakage points on the delivery pipeline 1. A pipeline sealing device provided by the present invention solves the problem that the existing delivery pipeline cannot timely alarm and automatically block the leakage by setting the monitoring component and the sealing component, thereby improving the safety and reliability of the delivery pipeline.

[0046] In one embodiment of the present invention, frames 31 are provided at both ends of the sealing portion 3, and the frames 31 are connected to the ends of the body 2. The sealing portion 3 includes a first sealing layer 32 and a second sealing layer 33. A closed accommodating cavity is formed between the first sealing layer 32 and the second sealing layer 33, and the accommodating cavity is connected to the fluid outlet of the fluid delivery pump 4.

[0047] In the above technical solution, the main function of the frame 31 is to provide support for the sealing part 3 and improve the stability of the sealing part 3. The frame 31 is connected to the end of the main body 2 to achieve connection and fixation between the sealing part 3 and the main body 2. In addition, since the frame 31 has a certain rigidity compared to the first sealing layer 32 and the second sealing layer 33 made of elastic material, using the frame 31 as a connecting part can ensure that the frame 31 and the main body 2 have a higher connection strength, thereby improving the reliability of the connection and reducing the possibility of sliding and deflection of the sealing part 3 in the main body 2. The first sealing layer 32 and the second sealing layer 33 are usually made of pressure-resistant, corrosion-resistant, and highly elastic materials, such as special rubber or polyurethane. The pressure-resistant and highly elastic materials can ensure that the first sealing layer 32 and the second sealing layer 33 are stretched without being damaged under the action of hydraulic pressure or gas pressure, so that the sealing cavity can repeatedly expand and contract, thereby improving the reliability and life of the sealing part 3. The first sealing layer 32 and the second sealing layer 33 made of corrosion-resistant materials can resist corrosion, so that the sealing part 3 can block the leakage of corrosive materials, avoid damage to the sealing layer due to corrosion, and thus cause the sealing part 3 to fail, thereby improving the adaptability and reliability of the sealing part 3. A closed accommodating cavity is formed between the first sealing layer 32 and the second sealing layer 33, ensuring that the sealing part 3 can expand smoothly without leakage after the accommodating cavity is inflated with air or liquid. Under normal operating conditions, the sealing portion 3 is arranged between the main body 2 and the conveying pipeline 1, and the accommodating cavity is in a contracted state. When the leakage sensor 74 detects material leakage in the conveying pipeline 1, it sends a signal to the controller 71. The controller 71 starts the fluid delivery pump 4 to fill the accommodating cavity between the first sealing layer 32 and the second sealing layer 33 with gas or liquid, so that the sealing portion 3 expands and fits tightly on the conveying pipeline 1, thereby achieving temporary blocking of the leakage point.

[0048] In one embodiment of the present invention, there are multiple frames 31, and the multiple frames 31 are arranged at intervals.

[0049] In the above technical solution, the frames 31 arranged at intervals can provide better mechanical support for the entire device, enhance the structural strength of the sealing part 3, and enable it to withstand greater external impact and internal pressure. By adjusting the intervals and sizes between the multiple frames 31, the sealing part 3 can adapt to the delivery pipelines 1 of different diameters and provide sealing protection ranges of different lengths, thereby improving the versatility and flexibility of the pipeline sealing device.

[0050] In one embodiment of the present invention, the sealing assembly also includes a limiting portion, which includes a first limiting member 51 and a second limiting member 52. The first limiting member 51 wraps one side of the sealing portion 3, and the second limiting member 52 wraps the other side opposite to the first limiting member 51. When the sealing portion 3 is not expanded, the first limiting member 51 and the second limiting member 52 are buckled together. When the sealing portion 3 expands, the first limiting member 51 and the second limiting member 52 limit the expansion direction and position of the sealing portion 3. At the same time, the sealing portion 3 causes the first limiting member 51 and the second limiting member 52 to move relative to each other.

[0051] In the above technical solution, when the sealing part 3 is inflated with air or liquid, it will expand in the direction of the delivery pipe 1 and the direction of the main body 2 at the same time, causing unnecessary pressure on the main body 2 and reducing the sealing effect on the delivery pipe 1. By wrapping the first stopper 51 and the second stopper 52 on the outside of the sealing part 3, the sealing part 3 can be restricted from expanding in the direction of the delivery pipe 1 instead of the main body 2, thereby reducing the pressure of the sealing part 3 on the main body 2 and improving the sealing effect of the sealing part 3 on the delivery pipe 1.

[0052] In one embodiment of the present invention, the sealing assembly further includes a buffer portion 6 , and the buffer portion 6 is disposed between the limiting portion and the body 2 .

[0053] In the above technical solution, in the pipeline transportation system, the pipeline may be subjected to external impact or vibration, such as ground vibration, pipeline collision, etc. The buffer part 6 is usually made of elastic or flexible material, so that the buffer part 6 can absorb these impact forces, reduce the strength transmitted to the sealing part 3 and the limiting part, and prevent these components from being damaged or deformed due to external forces. When the sealing part 3 expands toward the conveying pipeline 1 until it has tightly wrapped the conveying pipeline 1, the sealing part 3 has no space for further expansion inward. At this time, the sealing part 3 will expand outward to squeeze the limiting part. Since the buffer part 6 made of elastic or flexible material has the characteristic of being able to deform according to external force, when the sealing part 3 squeezes the limiting part toward the body 2, the buffer part 6 is compressed to provide a part of the buffer space for the sealing part 3, avoiding the limit part and the body 2 from directly contacting under the extrusion of the sealing part 3 to cause friction or collision and damage, thereby protecting the limit part and the body 2.

[0054] In one embodiment of the present invention, the buffer portion 6 includes a force sensor, and the force sensor is in communication with the controller. When the sealing portion 3 has no room for further expansion inward and expands outward to squeeze the limiting portion toward the body 2, the force sensor can detect the pressure applied by the limiting portion to the body 2 through the buffer portion 6, and the force sensor transmits the pressure value to the controller. When the controller determines that the pressure exceeds a certain threshold, it means that the sealing portion 3 has expanded to a sufficient size to complete the blocking of the delivery pipeline 1. At this time, the controller controls the fluid delivery pump 4 to stop, so as to prevent the sealing portion 3 from further expanding and causing damage to the sealing device.

[0055] In one embodiment of the present invention, the buffer portion 6 includes a rubber block 61 and a buffer spring 62 . The buffer spring 62 is disposed on the outer surface of the limiting portion, and the rubber block 61 is disposed in a cavity at the center of the buffer spring 62 .

[0056] In the above technical solution, since the buffer spring 62 and the rubber block 61 both have the characteristics of elastic deformation, they can be compressed and expanded according to the change of external force, so as to absorb and disperse the force between the limit part and the body 2, and can also adapt to the small displacement of the limit part under the action of the sealing part 3, so as to protect the limit part and the body 2 and improve the sealing reliability of the sealing device. The rubber block 61 is arranged in the cavity at the center of the buffer spring 62, and the buffer spring 62 also plays a role of limiting and fixing the rubber block, preventing the rubber block 61 from deflecting and dislocating during the process of repeated extrusion and release to buffer the limit part and the body 2. In addition, when the rubber block 61 is squeezed and compressed, the buffer spring 62 can be compressed together. Compared with the hard limiter, the buffer spring 62 will not affect the elastic buffering performance of the rubber block 61 while limiting and fixing the rubber block 61, so as to avoid the situation where the hard limiter hinders the rubber block 61 from further compressing and buffering.

[0057] In one embodiment of the present invention, a rubber block 61 or a buffer spring 62 is disposed on the outer wall surface of the limiting portion.

[0058] In the above technical solution, only the rubber block 61 or only the buffer spring 62 is provided on the outer wall surface of the limiting portion, so as to generate a certain buffer effect between the limiting portion and the main body 2 .

[0059] In one embodiment of the present invention, there are multiple rubber blocks 61 , and a clamping block 63 is disposed between two adjacent rubber blocks 61 .

[0060] In the above technical solution, multiple rubber blocks 61 are stacked in the cavity at the center of the buffer spring 62, which can further improve the buffering effect. The clamping block 63 has a certain hardness compared to the rubber block 61. Arranging the clamping block 63 between the two rubber blocks 61 can promote the rebound of the rubber blocks 61 on both sides of the clamping block 63, thereby improving the buffering effect of the buffer part 6.

[0061] In one embodiment of the present invention, a first connection portion 83 is provided at the first end of the body 2, and a second connection portion 84 is provided at the second end of the body 2. The pipeline sealing device also includes a reinforcing rib 9, one end of the reinforcing rib 9 is connected to the first connection portion 83, and the other end is connected to the second connection portion 84.

[0062] In the above technical solution, the first connection part 83 and the second connection part 84 provide a basis for the reinforcing rib 9 to be connected to the main body 2. One end of the reinforcing rib 9 is connected to the first connection part 83, and the other end is connected to the second connection part 84. Its main function is to enhance the overall rigidity of the main body 2, effectively disperse and resist the force acting on the main body 2, and prevent the main body 2 from being deformed under high pressure or external impact.

[0063] In one embodiment of the present invention, a first fastener 81 is provided at the first end of the main body 2, a first connecting portion 83 is provided on the first fastener 81, a second fastener 82 is provided at the second end of the main body 2, a second connecting portion 84 is provided on the second fastener 82, and the pipe sealing device also includes a reinforcing rib 9, one end of the reinforcing rib 9 is connected to the first connecting portion 83, and the other end of the reinforcing rib 9 is connected to the second connecting portion 84.

[0064] In the above technical solution, the first fastener 81 and the second fastener 82 enable the body 2 to be firmly fixed on the delivery pipeline 1 at locations prone to leakage, such as the pipeline connection, to prevent the body 2 from sliding and deflecting along the axial direction of the delivery pipeline 1. In addition, the first fastener 81 and the second fastener 82 are provided with connecting parts, which provide installation positions for the reinforcing rib 9. One end of the reinforcing rib 9 is connected to the first connecting part 83, and the other end of the reinforcing rib 9 is connected to the second connecting part 84, so that the reinforcing rib 9, the fastener and the body 2 form a solid frame structure, which effectively disperses and transmits the impact force from the outside and the internal pressure, and maintains the stability of the structure.

[0065] In one embodiment of the present invention, the reinforcing rib 9 is threadedly connected to the first connecting portion 83 , and the reinforcing rib 9 is also threadedly connected to the second connecting portion 84 .

[0066] In the above technical solution, the first fastener 81, the main body 2 and the second fastener 82 are separately arranged, the reinforcing rib 9 is threadedly connected to the first connecting portion 83, and the reinforcing rib 9 is also threadedly connected to the second connecting portion 84. The first fastener 81 and the second fastener 82 are tightened inward by tightening the nut, thereby clamping the main body 2 to achieve a fixed connection between the first fastener 81, the main body 2 and the second fastener 82. When the fastener at one end is damaged and needs to be replaced, the fastener and the main body 2 can be separated by loosening the nut, thereby improving the convenience of maintaining and replacing parts.

[0067] In one embodiment of the present invention, the first fastener 81, the body 2 and the second fastener 82 are fixedly connected or integrally formed, which can significantly improve the overall strength compared to a separate arrangement.

[0068] In one embodiment of the present invention, the pipeline sealing device also includes a sealing component, which includes a hot-melt material layer and a heating part. The hot-melt material layer is arranged on the surface of the sealing part 3 that contacts the outer wall of the conveying pipe 1. The heating part is arranged inside the sealing part 3 or on the surface of the sealing part 3 close to the limiting part. The heating part is communicatively connected to the controller 71.

[0069] In the above technical scheme, the hot-melt material layer is arranged on the surface where the sealing part 3 contacts the outer wall of the conveying pipe 1. After the sealing part 3 expands, the hot-melt material layer abuts against the outer wall of the conveying pipe 1. Then the controller 71 controls the heating part such as hot wire, heating pad or heating airbag to heat the hot-melt material layer, so that the hot-melt material layer melts and flows to cover the outer surface of the conveying pipe 1. After the heating is stopped, the hot-melt material layer cools and hardens into a solid, thereby realizing long-term sealing and plugging of leaks in the conveying pipe 1.

[0070] In one embodiment of the present invention, the pipeline sealing device further includes a fastener 8 , and the monitoring component further includes a buzzer 72 . The buzzer 72 is disposed on the body 2 or the fastener 8 , and the buzzer 72 is communicatively connected with the controller 71 .

[0071] In the above technical solution, the buzzer 72 is connected to the controller 71 for communication. When the leakage sensor detects a material leak in the pipeline, a signal is sent to the controller, which then activates the buzzer and sounds an alarm to remind the on-site staff that there is a leakage problem and that they need to evacuate in time or take corresponding treatment measures. This real-time early warning system can respond quickly, reduce the duration of the leakage, and reduce safety risks.

[0072] In one embodiment of the present invention, the pipeline sealing device further includes a battery 73, and the battery 73 is used to supply power to the monitoring component.

[0073] See also Figures 1 to 7 As shown, the present invention also provides a pipeline sealing method, which uses the pipeline sealing device of the above embodiment to seal the pipeline connection, and the method comprises:

[0074] Monitor whether there is gas leakage in the pipeline;

[0075] When gas leakage is detected in the pipeline, the pipeline sealing device is controlled to start the sealing procedure;

[0076] The pipeline sealing device is controlled to stop after the pipeline sealing device completes sealing.

[0077] In the above technical solution, the leakage sensor 74 continuously monitors whether the delivery pipeline 1 has a gas leak. When the leakage sensor 74 detects a gas leak in the pipeline, it sends a signal to the controller 71. After receiving the signal, the controller 71 controls the pipeline sealing device to start the sealing program. When the pipeline sealing device completes the sealing, the controller 71 sends a command to control the pipeline sealing device to stop. The pipeline sealing method uses the pipeline sealing device of the above embodiment to seal the pipeline connection, which can solve the problem that the existing delivery pipeline cannot timely warn and block the leakage, thereby improving the safety and reliability of the delivery pipeline.

[0078] In one embodiment of the present invention, the step of controlling the pipeline sealing device to start the sealing procedure includes:

[0079] Control the buzzer to start;

[0080] The control fluid delivery pump starts.

[0081] In the above technical solution, after receiving the signal, the controller 71 controls the buzzer to start and emit an alarm sound, thereby immediately notifying the on-site staff that the pipeline may leak, prompting the relevant personnel to quickly take necessary safety measures and maintenance actions. At the same time, the controller 71 controls the fluid delivery pump 4 to start, and the fluid delivery pump 4 pumps a fluid such as air or water into the sealing part 3 to expand the sealing part 3. After the sealing part 3 is expanded by the fluid such as air or water, it covers the surface of the conveying pipeline 1 to block the leakage point on the conveying pipeline 1.

[0082] In one embodiment of the present invention, the step of controlling the pipeline sealing device to stop after the pipeline sealing device completes sealing includes:

[0083] Obtaining the internal pressure of the sealing part;

[0084] Compare the internal pressure of the sealing part with the pressure threshold, and determine whether to control the fluid delivery pump to stop according to the comparison result;

[0085] If the internal pressure of the sealing part is greater than or equal to the pressure threshold, the fluid delivery pump is controlled to stop, and the buzzer is controlled to stop;

[0086] If the pressure inside the sealing part is less than the pressure threshold, the control fluid delivery pump continues to work.

[0087] In the above technical solution, the pressure value inside the sealing part is obtained by a pressure sensor arranged on the sealing part, and the pressure value is transmitted to the controller, and the controller compares the pressure value with the set pressure threshold. When the pressure value is greater than or equal to the pressure threshold, it indicates that the sealing part has expanded to the size of squeezing the conveying pipe and the limit part, and the expansion is limited, resulting in the continuous increase of the pressure inside the sealing part. At this time, the sealing part is sufficient to cover the surface of the conveying pipe, and then the controller controls the fluid delivery pump to stop and stop filling the sealing part with fluids such as gas or liquid. If the pressure value has not reached the pressure threshold, it means that the sealing part may not have completely covered the surface of the conveying pipe, and the sealing part still has sufficient expansion space. At this time, the fluid delivery pump continues to work, and fills the sealing part with fluids such as gas or liquid to make the sealing part continue to expand.

[0088] In one embodiment of the present invention, the step of controlling the pipeline sealing device to stop after the pipeline sealing device completes sealing includes:

[0089] When no leaking gas is detected;

[0090] Control the fluid delivery pump to stop, and control the buzzer to stop.

[0091] In the above technical solution, when the leakage sensor no longer detects leaking gas, it means that the sealing device has effectively prevented gas leakage. At this time, there is no need to continue running the fluid delivery pump to fill the sealing part with fluid. Therefore, a shutdown command is sent to the fluid delivery pump through the controller, thereby significantly reducing the power consumption of the sealing device such as the fluid delivery pump, improving the energy utilization efficiency of the entire system, and avoiding energy waste.

[0092] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the conveying pipeline 1 is used to convey gases such as carbon dioxide, the main body 2 is used as the main frame of the sealing device, and is used to carry the monitoring component and the sealing component. The fluid conveying pump 4 is used to pump fluid such as air or water into the sealing part 3 to expand the sealing part 3. After the sealing part 3 is filled with fluid such as air or water and expands, it covers the surface of the conveying pipeline 1 to block the leakage point on the conveying pipeline 1. The leakage sensor 74 is arranged in the main body 2 to monitor the leakage of the material conveyed by the conveying pipeline 1. The leakage sensor 74 and the fluid conveying pump 4 are communicated with the controller 71. When the leakage sensor 74 detects material leakage, it immediately sends a signal to the controller 71. After receiving the signal from the leakage sensor 74 detecting the leakage, the controller 71 starts the alarm and blocking procedures, and controls the fluid conveying pump 4 to fill the sealing part 3 with fluid such as air or water to expand the sealing part 3 to block the leakage point on the conveying pipeline 1. The pipeline sealing device provided by the present invention solves the problem that the existing conveying pipeline cannot timely give an alarm and automatically seal the leakage by arranging a monitoring component and a sealing component, thereby improving the safety and reliability of the conveying pipeline.

[0093] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0094] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline sealing device, characterized in that: The invention comprises a conveying pipeline (1), a body (2), a monitoring component and a sealing component, wherein the sealing component comprises a sealing part (3) and a fluid conveying pump (4), the monitoring component comprises a leakage sensor (74) and a controller (71) for monitoring whether the conveying pipeline (1) leaks, the body (2) is sleeved outside the conveying pipeline (1), the sealing part (3) is arranged between the body (2) and the conveying pipeline (1), the fluid conveying pump (4) is arranged on the body (2), the sealing part (3) is communicated with a fluid outlet of the fluid conveying pump (4), the fluid conveying pump (4) is used to pump fluid into the sealing part (3) to expand the sealing part (3) and seal the leakage position, the leakage sensor (74) is arranged in the body (2), and the leakage sensor (74) and the fluid conveying pump (4) are connected to the controller (71) for communication.

2. The pipeline sealing device according to claim 1, characterized in that: Frames (31) are provided at both ends of the sealing portion (3), the frames (31) are connected to the ends of the body (2), the sealing portion (3) comprises a first sealing layer (32) and a second sealing layer (33), a sealed accommodating cavity is formed between the first sealing layer (32) and the second sealing layer (33), the accommodating cavity is connected to the fluid outlet of the fluid delivery pump (4); and / or the frames (31) are multiple, and the multiple frames (31) are arranged at intervals.

3. The pipeline sealing device according to claim 1, characterized in that: The sealing assembly further comprises a limiting portion, the limiting portion comprising a first limiting member (51) and a second limiting member (52), the first limiting member (51) wrapping one side of the sealing portion (3), and the second limiting member (52) wrapping the other side opposite to the first limiting member (51).

4. The pipeline sealing device according to claim 1, characterized in that: The sealing assembly further comprises a buffer portion (6), wherein the buffer portion (6) is arranged between the limiting portion and the body (2).

5. The pipeline sealing device according to claim 4, characterized in that: The buffer portion (6) comprises a rubber block (61) and a buffer spring (62); the buffer spring (62) is arranged on the outer surface of the limiting portion, and the rubber block (61) is arranged in a cavity at the center of the buffer spring (62); or the rubber block (61) or the buffer spring (62) is arranged on the outer wall surface of the limiting portion.

6. The pipeline sealing device according to claim 5, characterized in that: There are a plurality of rubber blocks (61), and a clamping block (63) is provided between two adjacent rubber blocks (61).

7. The pipeline sealing device according to claim 1, characterized in that: The first end of the body (2) is provided with a first connecting portion (83), the second end of the body (2) is provided with a second connecting portion (84), and the pipeline sealing device also includes a reinforcing rib (9), one end of the reinforcing rib (9) is connected to the first connecting portion (83), and the other end is connected to the second connecting portion (84).

8. The pipeline sealing device according to claim 1, characterized in that: A first fastener (81) is provided at the first end of the body (2), and a first connecting portion (83) is provided on the first fastener (81); a second fastener (82) is provided at the second end of the body (2), and a second connecting portion (84) is provided on the second fastener (82); the pipe sealing device further comprises a reinforcing rib (9), one end of the reinforcing rib (9) is connected to the first connecting portion (83), and the other end of the reinforcing rib (9) is connected to the second connecting portion (84).

9. The pipeline sealing device according to claim 1, characterized in that: The pipeline sealing device also includes a sealing component, which includes a hot-melt material layer and a heating part. The hot-melt material layer is arranged on the surface of the sealing part (3) in contact with the outer wall of the conveying pipeline (1). The heating part is arranged inside the sealing part (3) or on the surface of the sealing part (3) close to the limiting part. The heating part is communicatively connected to the controller (71).

10. The pipeline sealing device according to claim 1, characterized in that: The pipeline sealing device further comprises a fastener (8), and the monitoring component further comprises a buzzer (72). The buzzer (72) is arranged on the body (2) or the fastener (8), and the buzzer (72) is communicatively connected with the controller (71).

11. A pipeline sealing method, characterized in that: The pipeline connection is sealed using the pipeline sealing device according to any one of claims 1 to 10, the method comprising: Detect whether there is gas leakage in the pipeline; When gas leakage is detected in the pipeline, the pipeline sealing device is controlled to start the sealing procedure; The pipeline sealing device is controlled to stop after the pipeline sealing device completes sealing.

12. The pipeline sealing method according to claim 11, characterized in that: The steps for controlling the pipeline sealing device to start the sealing process include: Control the buzzer to start; The control fluid delivery pump starts.

13. The pipeline sealing method according to claim 11, characterized in that: The steps of controlling the pipeline sealing device to stop after the pipeline sealing device completes sealing include: Obtaining the internal pressure of the sealing part; Compare the internal pressure of the sealing part with the pressure threshold, and determine whether to control the fluid delivery pump to stop according to the comparison result; If the internal pressure of the sealing part is greater than or equal to the pressure threshold, the fluid delivery pump is controlled to stop, and the buzzer is controlled to stop; If the pressure inside the sealing part is less than the pressure threshold, the control fluid delivery pump continues to work.

14. The pipeline sealing method according to claim 11, characterized in that: The steps of controlling the pipeline sealing device to stop after the pipeline sealing device completes sealing include: When no leaking gas is detected; Control the fluid delivery pump to stop, and control the buzzer to stop.

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