Plugging device

Abstract

The utility model relates to the field of pipeline plugging, and provides a plugging device which comprises an air bag, the air bag is provided with an air port, and the air port communicates with the interior and the exterior of the air bag. The air bag comprises an air bag body and a reinforcing layer, and the air bag body wraps the reinforcing layer. According to the plugging device, the pipeline can be plugged through the expanded air bag, the air bag comprises the air bag body and the reinforcing layer, the reinforcing layer is wrapped in the air bag body, the reinforcing layer provides a balanced and reliable reinforcing effect on the strength of the air bag body, on the basis, the strength and the pressure bearing grade of the air bag can be effectively improved, and the sealing performance of the pipeline is improved. According to the explosion-proof air bag, the air bag can bear large working pressure and has good explosion-proof capacity in the working period of blocking a pipeline, so that the risk that the air bag is broken and fragments are generated in the pipeline blocking period can be reduced, and the risk that foreign matter formed by the fragments generated by breaking of the air bag is left in the pipeline to cause potential safety hazards can be reduced; the use reliability and the service life of the plugging device can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of pipeline plugging, and in particular relates to a plugging device. Background Art

[0002] During the maintenance work of nuclear power plants, it is necessary to use plugging devices to block and drain pipelines to isolate them, so as to empty the water level in the local area where the equipment to be repaired is located or drain it to a lower water level that does not affect the maintenance work, so as to isolate the maintenance equipment and facilitate the maintenance work. In some cases, the plugging device will use an inflated airbag to block the pipeline. However, the airbag has a low pressure rating, resulting in a higher risk of airbag rupture, which may cause the fragments produced by the airbag to form foreign matter and leak into the pipeline, thus causing safety hazards. Utility Model Content

[0003] The embodiment of the present application provides a blocking device, which aims to solve the problem that the pressure resistance level of the airbag is low, resulting in a high risk of airbag rupture, causing the fragments and foreign objects produced by the airbag to be missed inside the pipeline, thereby causing safety hazards.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is: a blocking device, the blocking device comprising:

[0005] The airbag has an air port, wherein the air port communicates the inside and the outside of the airbag; the airbag comprises an airbag body and a reinforcement layer, wherein the airbag body wraps the reinforcement layer.

[0006] In some embodiments, the reinforcement layer is a reinforcement fabric layer.

[0007] In some embodiments, the blocking device further includes an air supply pipe, and the air supply pipe is installed through the air port.

[0008] In some embodiments, the blocking device further includes a pressure sensor, which is installed at one end of the air supply tube disposed in the airbag, and the pressure sensor is connected to a terminal wireless signal.

[0009] In some embodiments, the terminal is a mobile terminal.

[0010] In some embodiments, the terminal is provided with an application, and the application is used to receive and process the data transmitted by the pressure sensor, and to send an alarm signal when the data transmitted by the pressure sensor is abnormal.

[0011] In some embodiments, the blocking device includes a pressure relief pipe, a pressure charging pipe and a pressure inflator, and the pressure charging pipe is connected to the pressure inflator;

[0012] One end of the air supply pipe disposed outside the airbag is provided with a connection interface, and the connection interface can be switchably connected to one of the pressure charging pipe and the pressure relief pipe.

[0013] In some embodiments, the sealing device also includes a check valve, which is arranged inside the connecting interface. The check valve is opened when the connecting interface is connected to one of the charging pipe and the pressure relief pipe, and the check valve is closed when the connecting interface is removed from the charging pipe and the pressure relief pipe.

[0014] In some embodiments, the inflator is a digital automatic inflator.

[0015] In some embodiments, the airbag body is a rubber airbag body.

[0016] The beneficial effects of the blocking device provided by the present application are:

[0017] The plugging device provided in the embodiment of the present application can fill the air into the space inside the airbag through the air port, so that the airbag can gradually expand as the air pressure increases, thereby realizing the plugging of the pipeline by the expanded airbag. In addition, by making the airbag include an airbag body and a reinforcement layer, and making the airbag body wrap the reinforcement layer therein, so as to provide a balanced and reliable reinforcement effect on the strength of the airbag body through the reinforcement layer, based on this, the strength and pressure-bearing level of the airbag can be effectively improved, and the airbag can be enabled to withstand a larger working pressure and have better explosion-proof ability during the work of plugging the pipeline, thereby reducing the risk of the airbag rupturing and generating fragments during the period of plugging the pipeline, and reducing the risk of the fragments generated by the airbag breaking forming foreign matter and leaking into the pipeline to cause safety hazards, and improving the reliability and service life of the plugging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the structure of the blocking device and pipeline provided in an embodiment of the present application.

[0020] Among them, the reference numerals in the figure are:

[0021] 100-pipeline;

[0022] 10-airbag, 11-air port, 12-airbag body, 121-first part, 122-second part, 13-reinforcement layer; 20-air supply pipe, 21-connection interface; 30-pressure sensor; 40-terminal; 50-pressure relief pipe; 60-charging pipe; 70-inflator; 80-check valve. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the application is 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 this application and are not used to limit this application.

[0024] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the maintenance work of nuclear power plants, low-water level overhaul means that the water level of the primary circuit is completely emptied. At this time, the overhaul project involving the nuclear island can be fully launched. The non-low-water level overhaul refers to the state where the water level of the primary circuit is not completely emptied. Among them, the nuclear island is a general term for the nuclear reactor and various systems related to the reactor in the containment of the nuclear power plant. Among them, the primary circuit is mainly responsible for the cooling process of the reactor, which mainly involves the circulation process of "the reactor coolant (usually boric water) enters the reactor and flows through the core under the drive of the main pump, then flows out from the outlet pipe of the reactor vessel, then enters the steam generator, and then returns to the main pump."

[0028] During the maintenance work of nuclear power plants, it is necessary to use a plugging device to block and drain the pipeline to isolate it, so as to empty the water level in the local location where the equipment to be repaired is located or drain it to a lower water level that does not affect the maintenance work, so as to facilitate the isolation of the equipment to be repaired and facilitate the maintenance work. In some cases, the plugging device will use an inflated airbag to block the pipeline. However, the airbag is a conventional industrial rubber product, and the pressure rating of the airbag is low (about 0.2Mpa (megapascals) ~ 0.4Mpa), resulting in a high risk of airbag rupture, causing the fragments produced by the airbag to form foreign matter leaking into the pipeline, thereby causing safety hazards.

[0029] Therefore, the embodiment of the present application provides a blocking device that can improve the pressure rating of the airbag, reduce the risk of the airbag rupture, and reduce the risk of the fragments produced by the airbag breaking forming foreign matter that is leaked into the inside of the pipeline and causes safety hazards.

[0030] The specific implementation of this application is described in detail below in conjunction with specific embodiments:

[0031] See also Figure 1 , some embodiments of the present application provide a plugging device. The plugging device is suitable for nuclear power plants (such as CPR1000 nuclear power plants, CPR1000 is a million-kilowatt pressurized water reactor nuclear power technology solution), suitable for maintenance work in nuclear power plants (such as L408 overhaul operations, L408 is a comprehensive, restorative maintenance activity), and is particularly suitable for operations such as non-low-low water level overhaul and low-low water level overhaul. Among them, low-low water level overhaul refers to a state in which the water level of a circuit is completely drained. In this state, overhaul projects involving the nuclear island can be fully carried out. Non-low-low water level overhaul refers to a state in which the water level of a circuit has not been completely drained to a low-low water level. Among them, the nuclear island is a general term for the nuclear reactor and various systems related to the reactor in the containment of a nuclear power plant. Among them, the first circuit is mainly responsible for the cooling process of the reactor, which mainly involves the circulation process of "the reactor coolant (usually boric water) enters the reactor and flows through the core under the drive of the main pump, then flows out from the outlet pipe of the reactor vessel, then enters the steam generator, and then returns to the main pump."

[0032] In some application scenarios, the plugging device can be used to plug the pipeline 100 to drain the water level to a lower water level, or drain it completely, so as to isolate the equipment that needs to be repaired and facilitate the maintenance work. For example, the plugging device can be used in a primary circuit to perform special isolation and maintenance on nuclear-grade equipment in the primary circuit (such as RCP320VP valve, RCP320VP valve is a valve identification of a specific check valve in a nuclear power plant, and RCP320VP valve is closely related to the reactor coolant system (RCP)).

[0033] In other application scenarios, the sealing device can be used to seal the outside of the opening to prevent foreign matter from entering the opening, that is, the sealing device can be used as a foreign matter blocking device. For example, the sealing device can be used in the secondary circuit to block the opening of the non-nuclear grade equipment of the secondary circuit from foreign matter. For another example, the sealing device can be used in a vertical pipeline to block the pipe opening of the vertical pipeline from foreign matter. Among them, the secondary circuit mainly involves the process of steam generation and energy conversion. The secondary circuit can use the high-temperature and high-pressure steam generated by the primary circuit to expand and work in the turbine, convert the steam thermal energy into the rotational kinetic energy (i.e. mechanical energy) of the turbine, and drive the generator to convert the mechanical energy into electrical energy.

[0034] Of course, in other application scenarios, the plugging device is also suitable for plugging pipelines 100 in non-nuclear power fields.

[0035] See also Figure 1 The blocking device includes an airbag 10, and the airbag 10 has an air port 11, and the air port 11 communicates the inside and the outside of the airbag 10. The airbag 10 includes an airbag body 12 and a reinforcement layer 13, and the airbag body 12 wraps the reinforcement layer 13 therein.

[0036] It should be noted that the airbag 10 is provided with an air port 11, which connects the space inside the airbag 10 to the space outside the airbag, and the air port 11 is used for pressurizing (i.e., inflating) and depressurizing (i.e., exhausting) the airbag 10. That is, gas can be filled into the space inside the airbag 10 through the air port 11 to cause the airbag 10 to gradually expand as the air pressure increases, until the expanded airbag 10 is closely attached to the inner wall of the pipe 100 and blocks the pipe 100. Conversely, the gas in the space inside the airbag 10 can be discharged through the air port 11 to cause the airbag 10 to gradually shrink as the air pressure decreases, so that the airbag 10 can release the blocking of the pipe 100, thereby facilitating the detachment of the blocking device from the pipe 100.

[0037] It should also be noted that the airbag body 12 is the main part of the airbag 10, and the reinforcement layer 13 is a part used to enhance the strength of the airbag body 12. The airbag body 12 wraps the reinforcement layer 13 therein, so that the reinforcement layer 13 can be hidden in the airbag body 12 and provide a balanced and reliable reinforcement effect on the strength of the airbag body 12. Figure 1 As shown, in some embodiments, the airbag body 12 includes a first portion 121 and a second portion 122 , and the first portion 121 and the second portion 122 sandwich the reinforcement layer 13 therebetween. In other words, the reinforcement layer 13 divides the airbag body 12 into the first portion 121 and the second portion 122 .

[0038] The airbag body 12 and the reinforcement layer 13 may be combined by, but not limited to, vulcanization, bonding or other processes to form the airbag 10 .

[0039] In summary, the blocking device provided in the embodiment of the present application can fill the air into the space inside the airbag 10 through the air port 11, so that the airbag 10 can gradually expand as the air pressure increases, thereby blocking the pipeline 100 through the expanded airbag 10. In addition, by making the airbag 10 include the airbag body 12 and the reinforcement layer 13, and making the airbag body 12 wrap the reinforcement layer 13 therein, so as to provide a balanced and reliable reinforcement effect on the strength of the airbag body 12 through the reinforcement layer 13, based on this, the strength and pressure-bearing level of the airbag 10 can be effectively improved, and the airbag 10 can be enabled to withstand a large working pressure and have a better explosion-proof ability during the work of blocking the pipeline 100, thereby reducing the risk of the airbag 10 breaking and generating fragments during the period of blocking the pipeline 100, and reducing the risk of the fragments and foreign objects generated by the breaking of the airbag 10 being missed inside the pipeline 100 to cause safety hazards, and improving the reliability and service life of the blocking device.

[0040] See also Figure 1 In some embodiments of the present application, the reinforcement layer 13 is a reinforced fabric layer.

[0041] It should be noted that the reinforced fabric layer is a layered structure formed by interweaving or weaving yarns or fibers in a specific manner, and the reinforced fabric layer can provide a strengthening and optimized reinforcement effect on the strength of the airbag body 12 .

[0042] By adopting the above solution, by making the reinforcing layer 13 a reinforced fabric layer (i.e., using a high-strength fabric material as the reinforcing layer 13), the airbag 10 can have good tear resistance, impact resistance, and wear resistance under the condition of achieving a high strength-to-mass ratio. Based on this, the effect of optimizing and strengthening the strength of the airbag body 12 by the reinforcing layer 13 can be improved, the strength, pressure rating, and service life of the airbag 10 can be improved, and the risk of the airbag 10 rupturing and generating fragments during use can be reduced.

[0043] Based on this embodiment, in actual application scenarios, the maximum working pressure of the airbag 10 can reach 1.5 MPa, the bursting pressure of the airbag 10 is greater than or equal to 3 MPa, and the pressure rating of the airbag 10 is significantly improved.

[0044] Of course, in other embodiments, the reinforcement layer 13 may be made of other materials, for example, the reinforcement layer 13 may be a synthetic material reinforcement layer.

[0045] See also Figure 1 In some embodiments of the present application, the blocking device further includes an air supply pipe 20 , which is installed through the air port 11 .

[0046] It should be noted that the air supply pipe 20 is installed in the air port 11 and fixed relative to the air port 11. The air supply pipe 20 and the air port 11 can be relatively fixed by interference fit or the like, or can be absolutely fixed by bonding or welding or the like. In some embodiments, the air port 11 and the air supply pipe 20 can be sealed to prevent gas from leaking from the gap between the air port 11 and the air supply pipe 20.

[0047] The air supply pipe 20 is a tubular structure, and the space inside the air supply pipe 20 can form a gas transmission channel. One end of the air supply pipe 20 is arranged inside the airbag 10, and the other end of the air supply pipe 20 is arranged outside the airbag 10 and is used to connect with a pressurizing component (such as the inflator 70 or an external air source described below) or a pressure relief component (such as the pressure relief pipe 50 or an external pressure relief valve described below). In the case where the end of the air supply pipe 20 arranged outside the airbag 10 is connected to the pressurizing component, it is convenient for the pressurizing component to transmit gas to the airbag 10 via the air supply pipe 20 to inflate the airbag 10. In the case where the end of the air supply pipe 20 arranged outside the airbag 10 is connected to the pressure relief component, it is convenient for the pressure relief component to release gas from the airbag 10 via the air supply pipe 20 to relieve the pressure and shrink the airbag 10.

[0048] By adopting the above scheme, the air supply pipe 20 can be installed in the air port 11, so that the air supply pipe 20 and the airbag 10 are pre-assembled to form a modular component. Based on this, at the work site (i.e., at the place to be blocked in the pipeline 100), it is convenient to connect the charging component or the pressure relief component through one end of the air supply pipe 20 outside the airbag 10, so as to reduce the operational difficulty of directly connecting the charging component or the pressure relief component to the air port 11, thereby improving the connection convenience between the airbag 10 and the charging component, and between the airbag 10 and the pressure relief component, and the convenience of on-site disassembly and assembly, and optimizing the structure and performance of the blocking device.

[0049] Of course, in other embodiments, the blocking device may not include the air supply pipe 20, and the pressure-increasing component or the pressure-releasing component may be directly connected to the air port 11, or the pressure-increasing component or the pressure-releasing component may be indirectly connected to the air port 11 via other components (such as joints, pipe fittings other than the air supply pipe 20).

[0050] See also Figure 1In some embodiments of the present application, the blocking device further includes a pressure sensor 30 , which is installed at one end of the air supply tube 20 disposed in the airbag 10 , and the pressure sensor 30 is connected to the terminal 40 by wireless signal.

[0051] It should be noted that, when the air supply pipe 20 is installed in the air port 11, the air supply pipe 20 has one end disposed in the airbag 10. The pressure sensor 30 can be installed at one end of the air supply pipe 20 disposed in the airbag 10, so that the pressure sensor 30 can monitor (can be continuous monitoring, real-time monitoring, etc.) the internal pressure of the airbag 10. The pressure sensor 30 and the terminal 40 can be connected by a remote wireless signal through, but not limited to, a wireless signal (i.e., WiFi), so that the pressure sensor 30 can remotely transmit its monitoring data to the terminal 40. The terminal 40 can receive and process the data transmitted by the pressure sensor 30. Among them, the terminal 40 can be, but not limited to, a computer (such as a desktop computer, a laptop computer, etc.), a mobile phone, a tablet computer, an industrial control system, etc.

[0052] like Figure 1 As shown, in some embodiments, the terminal 40 is a matching component of the blocking device (ie, the blocking device includes the terminal 40). Of course, in other embodiments, the terminal 40 may be an external terminal that does not belong to the blocking device.

[0053] The pressure sensor 30 may be, but is not limited to, a wireless digital pressure sensor.

[0054] By adopting the above scheme, by installing the pressure sensor 30 at one end of the air supply pipe 20 provided in the airbag 10, the pressure sensor 30 can be stably installed in the airbag 10, and the risk of the pressure sensor 30 being collided due to changes in the installation position and installation state during the inflation or depressurization of the airbag 10 can be reduced, thereby facilitating the pressure sensor 30 to perform its monitoring function in a long-lasting, stable and reliable manner, and extending the service life of the pressure sensor 30.

[0055] Furthermore, during the period of the airbag 10 being pressurized and the period of the airbag 10 blocking the pipeline 100, it is also convenient to automatically monitor the internal pressure of the airbag 10 via the pressure sensor 30, and transmit the monitoring data to the terminal 40 connected to the pressure sensor 30 by wireless signal in real time and remotely. Based on this, during the period of the airbag 10 being pressurized and the period of the airbag 10 blocking the pipeline 100, the operator can stay away from the airbag 10, that is, away from the site, and there is no need to manually monitor the internal pressure of the airbag 10 on site, thereby improving the intelligence, automation, and use performance of the plugging device. In particular, when the plugging device is applied to the pipeline 100 in the nuclear power field, the operator is kept away from the site during the period of the airbag 10 being pressurized and the period of the airbag 10 blocking the pipeline 100, which can reduce the exposure dose of the operator in the irradiated environment and the radioactive environment, and improve the safety of the operation.

[0056] Of course, in other embodiments, the pressure sensor 30 may be disposed in the airbag 10 , but is not limited to being installed at one end of the air supply tube 20 disposed in the airbag 10 , for example, it may be fixed to the inner wall of the airbag 10 .

[0057] See also Figure 1 In some embodiments of the present application, the terminal 40 is a mobile terminal.

[0058] It should be noted that the mobile terminal is a terminal 40 that is highly portable and can be used anytime and anywhere. Figure 1 As shown, in some embodiments, the mobile terminal is a mobile phone, such as a smart phone for a wireless network within a nuclear power plant, or any smart phone (applicable to non-wireless signal shielding areas or non-restricted areas). Of course, in other embodiments, in a broad sense, the mobile terminal can also be a notebook, a tablet computer, etc.

[0059] By adopting the above solution, by making the terminal 40 a mobile terminal, the portability of the terminal 40 can be improved, and it is convenient for the operator to carry the terminal 40 and move around freely, and it is convenient for the operator to stay away from the airbag 10 and remotely and timely view the monitoring data transmitted by the pressure sensor 30 from the terminal 40. In particular, when the plugging device is applied to the pipeline 100 in the nuclear power field, the operator can carry the terminal 40 during the period of pressurizing the airbag 10 and plugging the pipeline 100 by the airbag 10, and can stay away from the scene as much as possible to reduce the exposure dose of the operator in the irradiated environment and the radioactive environment, and protect himself.

[0060] See also Figure 1 In some embodiments of the present application, the terminal 40 is provided with an application, which is used to receive and process the data transmitted by the pressure sensor 30, and to send an alarm signal when the data transmitted by the pressure sensor 30 is abnormal.

[0061] It should be noted that the terminal 40 is provided with an application. In some embodiments, the terminal 40 is a mobile terminal, and the application is an APP (Application).

[0062] Based on the wireless signal connection between the pressure sensor 30 and the terminal 40 , the application can remotely receive the data transmitted by the pressure sensor 30 , and analyze and process the data transmitted by the pressure sensor 30 .

[0063] The application can also send out an alarm signal when analyzing that the data transmitted by the pressure sensor 30 is abnormal. In some embodiments, the application can preset a low-pressure threshold. When the application analyzes that "the data transmitted by the pressure sensor 30 is lower than or equal to the low-pressure threshold", the application can automatically and timely send out a low-pressure alarm signal. Based on this, it is convenient for the operator to return to the scene in time and intervene in time to eliminate potential risks when receiving a low-pressure warning signal. For example, the charging component can be connected to one end of the air supply pipe 20 outside the airbag 10, and the airbag 10 can be pressurized through the charging component to fill the internal pressure of the airbag 10 back to the normal range.

[0064] In some embodiments, the application can preset a high-pressure threshold. When the application analyzes that "the data transmitted by the pressure sensor 30 is higher than or equal to the high-pressure threshold", the application can automatically and promptly issue a high-pressure warning signal. Based on this, it is convenient for the operator to return to the scene in time and intervene in time to eliminate potential risks when receiving a high-pressure warning signal. For example, the pressure relief component can be connected to one end of the air supply pipe 20 outside the airbag 10, and the airbag 10 can be depressurized through the pressure relief component to reduce the internal pressure of the airbag 10 back to the normal range.

[0065] By adopting the above scheme, the terminal 40 can remotely and timely receive the data transmitted by the pressure sensor 30 through a custom-designed application, analyze and process the data transmitted by the pressure sensor 30, and automatically and timely send out an alarm signal when the data transmitted by the pressure sensor 30 is analyzed to be abnormal. Based on this, it is convenient for the operator to stay away from the site, and it is convenient for the operator to remotely and timely view the data transmitted by the pressure sensor 30 and the data analysis results from the application, and it is convenient for the operator to receive the alarm signal of "abnormal internal pressure of the airbag 10" in time, and it is convenient for the operator to return to the site in time and intervene in time to eliminate potential risks when receiving the alarm signal. In this way, the intelligence and use performance of the blocking device can be improved.

[0066] See also Figure 1 In some embodiments of the present application, the blocking device includes a pressure relief tube 50, a pressure charging tube 60 and a pressure inflator 70, and the pressure charging tube 60 is connected to the pressure inflator 70. One end of the air supply tube 20 disposed outside the airbag 10 is provided with a connection interface 21, and the connection interface 21 can be switchably connected to one of the pressure charging tube 60 and the pressure relief tube 50.

[0067] It should be noted that a connection interface 21 is provided at one end of the air supply pipe 20 outside the airbag 10, and the connection interface 21 can be switchably connected to one of the charging pipe 60 and the pressure relief pipe 50, that is, the connection interface 21 can be connected to the charging pipe 60 or the pressure relief pipe 50 as needed.

[0068] When the connection interface 21 is connected to the pressure relief pipe 50 , the end of the pressure relief pipe 50 away from the connection interface 21 can be directly emptied or connected to the air storage component, based on which, the airbag 10 can be easily depressurized through the pressure relief pipe 50 .

[0069] When the connection interface 21 is connected to the charging tube 60 , the end of the charging tube 60 away from the connection interface 21 is connected to the inflator 70 . Based on this, the inflator 70 can inflate the airbag 10 via the charging tube 60 , the connection interface 21 , and the air supply tube 20 .

[0070] By adopting the above solution, the air supply pipe 20 can be switched to be connected to the end of the pressure tube 60 away from the inflator 70 by setting the air supply pipe 20 at the connection interface 21 outside the airbag 10, so that the inflator 70 can pressurize the airbag 10 through the pressure tube 60, the connection interface 21, and the air supply pipe 20. Conversely, the air supply pipe 20 can be switched to be connected to one end of the pressure relief pipe 50 by setting the air supply pipe 20 at the connection interface 21 outside the airbag 10, so that the airbag 10 can be depressurized through the pressure relief pipe 50. Based on this, the structure of the blocking device can be optimized, the blocking device can be formed into a modular device, and the use performance of the blocking device can be enriched.

[0071] See also Figure 1 In some embodiments of the present application, the blocking device also includes a check valve 80, which is arranged inside the connection interface 21. The check valve 80 is turned on when the connection interface 21 is connected to one of the charging pipe 60 and the pressure relief pipe 50, and the check valve 80 is closed when the connection interface 21 is disassembled from the charging pipe 60 and the pressure relief pipe 50.

[0072] It should be noted that the check valve 80 is installed inside the connection interface 21 , that is, the check valve 80 is a built-in check valve 80 .

[0073] When the connection interface 21 is connected to the pressure relief pipe 50 , the pressure relief pipe 50 can push against the valve core of the check valve 80 to make the check valve 80 conductive, thereby connecting the air supply pipe 20 with the pressure relief pipe 50 , thereby facilitating the pressure relief of the airbag 10 through the pressure relief pipe 50 .

[0074] When the connecting interface 21 is connected to the charging tube 60, the charging tube 60 can push against the valve core of the check valve 80 to make the check valve 80 conductive, and the air supply tube 20 is connected to the charging tube 60, thereby facilitating the inflator 70 to pressurize the airbag 10 via the charging tube 60, the connecting interface 21, and the air supply tube 20.

[0075] When the connection interface 21 is connected to neither the pressure relief pipe 50 nor the pressure charging pipe 60 , the check valve 80 can be automatically closed to seal the connection interface 21 , thereby limiting the leakage of gas in the airbag 10 from the connection interface 21 .

[0076] By adopting the above solution, by installing the check valve 80 inside the connection interface 21, when the connection interface 21 is connected to one of the pressure charging pipe 60 and the pressure relief pipe 50, the check valve 80 can be opened, and one of the pressure charging pipe 60 and the pressure relief pipe 50 can be connected to the air supply pipe 20, so as to facilitate the charging or depressurization of the airbag 10. When the connection interface 21 is neither connected to the pressure relief pipe 50 nor the pressure charging pipe 60, the connection interface 21 can be reliably sealed through the automatically closed check valve 80, and the gas in the airbag 10 can be reliably restricted from leaking from the connection interface 21, so as to improve the sealing reliability at the connection interface 21 of the air supply pipe 20.

[0077] Of course, in other embodiments, the connection interface 21 can automatically seal itself when it is disassembled from the pressure charging tube 60 and the pressure relief tube 50. For example, the connection interface 21 can be a quick-connect connector, etc. In this case, the check valve 80 can be omitted.

[0078] See also Figure 1 In some embodiments of the present application, the inflator 70 is a digital automatic inflator.

[0079] It should be noted that the digital automatic inflator is a inflator 70 that adopts digital technology and has the ability of precise pressure control.

[0080] By adopting the above scheme, by making the inflator 70 a digital automatic inflator, it is convenient to set the "preset working pressure" in advance on the digital automatic inflator. Based on this, when the connection interface 21 is connected to the charging tube 60, the digital automatic inflator can automatically inflate the airbag 10, and automatically stop charging when the internal pressure of the airbag 10 reaches the preset working pressure, so that the airbag 10 can be automatically started and stopped to be charged, which can reduce the workload of the operator and improve work efficiency. In particular, when the plugging device is applied to the pipeline 100 in the nuclear power field, the operator can stay away from the scene as much as possible during the period when the digital automatic inflator automatically starts and stops to charge the airbag 10, so as to reduce the exposure dose in the irradiated environment and the radioactive environment and protect himself.

[0081] By adopting the above scheme, the inflator 70 is made into a digital automatic inflator, so that the inflator 70 is portable, and based on this, it is convenient for the operator to carry the digital automatic inflator with him and move around by himself. Therefore, when the airbag 10 needs to be pressurized, it is convenient for the operator to carry the digital automatic inflator to the site, and conveniently and quickly build the connection between the air supply pipe 20, the charging pipe 60 and the digital automatic inflator. Since the digital automatic inflator can be portable and close to the airbag 10, the combined length of the air supply pipe 20 and the charging pipe 60 can be shortened, and there is no need for a hose of several tens of meters to connect the compressed air system on site, thereby reducing the workload of the connection operation between the air supply pipe 20, the charging pipe 60 and the digital automatic inflator, reducing the workload of the operator, and improving the work efficiency. In particular, when the plugging device is applied to the pipeline 100 in the nuclear power field, the exposure dose of the operator in the irradiated environment and the radioactive environment due to the above connection operation can be reduced.

[0082] On the contrary, when the airbag 10 has completed inflation or does not need to be inflation, it is convenient for the operator to disassemble the digital automatic inflator and carry the digital automatic inflator away from the site. Based on this, when the plugging device is used in the pipeline 100 in the nuclear power field, the risk of contamination of the digital automatic inflator can be reduced.

[0083] By adopting the above solution, by making the inflator 70 a digital automatic inflator, the risk of the inflator 70 being shut down due to the influence of the on-site gas source (such as insufficient gas source or gas source failure, etc.) can be reduced, thereby improving the working efficiency of the plugging device.

[0084] Of course, in other embodiments, the inflator 70 may be other types of inflators.

[0085] See also Figure 1 In some embodiments of the present application, the airbag body 12 is a rubber airbag body.

[0086] It should be noted that the airbag body 12 is a rubber airbag body, and the airbag body 12 is made of rubber material.

[0087] By adopting the above scheme, by making the airbag body 12 a rubber airbag body, on the one hand, the airbag body 12 can have better plasticity, can be designed and manufactured according to actual needs, and can improve the molding convenience of the airbag body 12 and the airbag 10. On the one hand, the elasticity of the airbag body 12 and the airbag 10 can be improved, the inflation and decompression of the airbag 10 can be facilitated, the repeated use of the airbag 10 can be facilitated, and the service life of the airbag 10 can be improved. On the one hand, the airbag body 12 can have better durability and anti-aging ability, can make the airbag body 12 maintain the stability of its properties and performance in a wide temperature range, and can improve the reliability and service life of the airbag body 12 and the airbag 10.

[0088] Of course, in other embodiments, the airbag body 12 can be made of other materials, such as polyurethane (TPU), polyester fiber (PET), polyamide fiber (Nylon) and polypropylene fiber (PP).

[0089] See also Figure 1 In summary, the present application provides a specific example of a blocking device. The blocking device includes an air bag 10, an air delivery pipe 20, a pressure sensor 30, a terminal 40, a pressure relief pipe 50, a pressure charging pipe 60, an inflator 70, and a check valve 80.

[0090] The airbag 10 includes an airbag body 12 and a reinforcement layer 13, wherein the airbag body 12 wraps the reinforcement layer 13 therein. The airbag body 12 is a rubber airbag body. The reinforcement layer 13 is a reinforced fabric layer. Based on this, the strength, pressure rating, and service life of the airbag 10 can be improved, the risk of the airbag 10 breaking and generating fragments during use can be reduced, and the risk of the fragments and foreign objects generated by the airbag 10 being missed inside the pipe 100 and causing safety hazards can be reduced. Among them, the maximum working pressure of the airbag 10 can reach 1.5Mpa, the bursting pressure of the airbag 10 is greater than or equal to 3Mpa, and the pressure rating of the airbag 10 is significantly improved.

[0091] The airbag 10 has an air port 11, which connects the inside and outside of the airbag 10. The air supply pipe 20 is installed through the air port 11 and is fixed relative to the air port 11. One end of the air supply pipe 20 arranged outside the airbag 10 is provided with a connection interface 21, and the connection interface 21 can be switchably connected to the charging pipe 60. The charging pipe 60 is connected to the inflator 70. The inflator 70 is a digital automatic inflator. Based on this, it is convenient to set the "preset working pressure" in advance on the digital automatic inflator, so that the digital automatic inflator can automatically inflate the airbag 10 via the charging pipe 60, the connection interface 21, and the air supply pipe 20, and automatically stop charging when the internal pressure of the airbag 10 reaches the preset working pressure. In addition, the digital automatic inflator is portable and can be easily placed close to the airbag 10. The combined length of the air supply pipe 20 and the charging pipe 60 can be shortened. There is no need for dozens of meters of hose to connect to the on-site compressed air system, which can reduce the workload of connecting operations between the air supply pipe 20, the charging pipe 60 and the digital automatic inflator.

[0092] The connection interface 21 can also be switchably connected to the pressure relief pipe 50 , and the end of the pressure relief pipe 50 away from the connection interface 21 is directly emptied. Based on this, the pressure relief pipe 50 can be convenient for decompressing the airbag 10 via the air supply pipe 20 .

[0093] The check valve 80 is disposed inside the connection interface 21. The check valve 80 is open when the connection interface 21 is connected to one of the pressure charging pipe 60 and the pressure relief pipe 50, and is closed when the connection interface 21 is detached from the pressure charging pipe 60 and the pressure relief pipe 50. Based on this, when the connection interface 21 is detached from the pressure charging pipe 60 and the pressure relief pipe 50, the check valve 80 can be automatically closed and the connection interface 21 can be automatically sealed, so that the gas in the airbag 10 can be reliably restricted from leaking from the connection interface 21.

[0094] The pressure sensor 30 is installed at one end of the air supply pipe 20 disposed in the airbag 10. The pressure sensor 30 is a built-in wireless digital pressure sensor 30. The pressure sensor 30 is connected to the terminal 40 by wireless signals. The pressure sensor 30 can monitor the internal pressure of the airbag 10 and remotely transmit its monitoring data to the terminal 40. The terminal 40 is a mobile terminal. The terminal 40 is provided with an application, and the application can receive the data transmitted by the pressure sensor 30, analyze and process the received data, and can also automatically and timely send out an alarm signal when the data transmitted by the pressure sensor 30 is abnormal. Based on this, it is convenient for the operator to stay away from the scene, and it is convenient for the operator to remotely and timely view the data transmitted by the pressure sensor 30 and the data analysis results from the application, and it is convenient for the operator to receive the alarm signal of "abnormal internal pressure of the airbag 10" in time, and it is convenient for the operator to return to the scene in time and intervene in time to eliminate potential risks when receiving the alarm signal.

[0095] The plugging device provided in the embodiment of the present application is particularly suitable for use in a pipeline 100 in the nuclear power field. The operation process may refer to (but is not limited to):

[0096] S1. Since the digital automatic charger and mobile terminal need to be used in a radioactive environment and the digital automatic charger and mobile terminal have non-surface contaminated contact parts, they need to be wrapped and protected in advance to reduce the risk of the digital automatic charger and mobile terminal being contaminated and forming radioactive parts.

[0097] S2. Before installing the airbag 10, check and clean the surface area of ​​the pipeline 100 where the plugging device (especially the airbag 10) is to be installed. If there are any metal burrs, they need to be polished and smoothed in advance.

[0098] S3. Install the modular assembly formed by pre-assembling the airbag 10, the air supply pipe 20, and the pressure sensor 30 to the corresponding area of ​​the pipeline 100.

[0099] S4. Turn on the power button of the digital automatic inflator and set the automatic start-stop setting value in advance according to the working pressure of the airbag 10.

[0100] S5, opening the application of the mobile terminal, and setting the low pressure threshold and the high pressure threshold in advance according to the working pressure of the airbag 10;

[0101] S6. Confirm that the application can normally receive the signal from the pressure sensor 30 and confirm that the low pressure alarm signal has appeared.

[0102] S7. Connect the connection interface 21 of the air delivery pipe 20 to the charging pipe 60 and the digital automatic inflator. After the connection, the digital automatic inflator can automatically inflate the airbag 10, and automatically stop the charging when the internal pressure of the airbag 10 reaches the preset working pressure. During the period when the digital automatic inflator automatically starts and stops charging the airbag 10, the operator can stay away from the scene as much as possible and observe whether the pressure data of the pressure sensor 30 is normal from the application of the terminal 40, so as to reduce the exposure dose in the irradiated environment and the radioactive environment and protect himself.

[0103] S8. If the airbag 10 needs to play a plugging role for a long time, the connection between the connection interface 21 of the air supply pipe 20 and the charging pipe 60 can be disconnected after the charging is completed, and the digital automatic inflator can be carried portable to save on-site space and reduce the risk of contamination of the digital automatic inflator in a radioactive environment. If the airbag 10 only needs to play a plugging role for a short time, the connection between the connection interface 21 of the air supply pipe 20 and the charging pipe 60 can be temporarily disconnected after the charging is completed.

[0104] S9, after the pressure is charged, the airbag 10 is pushed by hand to confirm that the airbag 10 is blocked stably. If the connection interface 21 of the air supply pipe 20 and the pressure charging pipe 60 are disconnected, it is also confirmed that there is no gas leakage from the check valve 80 at the connection interface 21.

[0105] S10, observe and confirm from the application of the terminal 40 that the pressure data of the pressure sensor 30 is stable. At this point, the blocking operation is basically completed, and the operator can carry the mobile terminal with him and remotely monitor the internal pressure of the airbag 10, and return to the site in time and intervene in time to eliminate potential risks when the application sends an alarm signal due to abnormal data transmitted by the pressure sensor 30.

[0106] S11 , after the on-site plugging operation is completed, the connection interface 21 of the air supply pipe 20 is connected to the pressure relief pipe 50 , so that the pressure relief pipe 50 can relieve the pressure of the airbag 10 .

[0107] S12, after the airbag 10 is depressurized, the modular assembly formed by the airbag 10, the air delivery pipe 20, and the pressure sensor 30 is taken out from the pipeline 100.

[0108] S13, check that the area of ​​the pipeline 100 where the plugging device was previously set is clean and has no foreign matter left.

[0109] S14. Inspect and clean the components of the plugging device, especially the airbag 10, air delivery pipe 20 and other components that are in contact with radioactive surface contamination, so as to reduce the radioactive contamination on the surface of the airbag 10, air delivery pipe 20 and other components. Count the components of the plugging device to avoid missing components on site to form foreign matter and cause safety hazards.

[0110] S15. The components of the blocking device are packed and stored as required. Among them, the airbag 10, air delivery pipe 20 and other components that are in contact with radioactive surface contamination, and the digital automatic inflator and mobile terminal that are not in contact with radioactive surface contamination can be packed and stored separately.

[0111] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A blocking device, characterized in that: The blocking device comprises: The airbag has an air port, wherein the air port communicates the inside and the outside of the airbag; the airbag comprises an airbag body and a reinforcement layer, wherein the airbag body wraps the reinforcement layer.

2. The blocking device according to claim 1, characterized in that: The reinforcement layer is a reinforcement fabric layer.

3. The blocking device according to claim 1, characterized in that: The blocking device also includes an air supply pipe, which is installed through the air port.

4. The blocking device according to claim 3, characterized in that: The blocking device also includes a pressure sensor, which is installed at one end of the air supply pipe arranged in the airbag, and the pressure sensor is connected to the terminal wireless signal.

5. The blocking device according to claim 4, characterized in that: The terminal is a mobile terminal.

6. The blocking device according to claim 4, characterized in that: The terminal is provided with an application program, and the application program is used to receive and process the data transmitted by the pressure sensor, and to send out an alarm signal when the data transmitted by the pressure sensor is abnormal.

7. The blocking device according to claim 3, characterized in that: The blocking device comprises a pressure relief pipe, a pressure charging pipe and a pressure inflator, wherein the pressure charging pipe is connected to the pressure inflator; One end of the air supply pipe disposed outside the airbag is provided with a connection interface, and the connection interface can be switchably connected to one of the pressure charging pipe and the pressure relief pipe.

8. The blocking device according to claim 7, characterized in that: The blocking device also includes a check valve, which is arranged inside the connecting interface. The check valve is opened when the connecting interface is connected to one of the charging pipe and the pressure relief pipe, and is closed when the connecting interface is removed from the charging pipe and the pressure relief pipe.

9. The blocking device according to claim 7, characterized in that: The charger is a digital automatic charger.

10. The blocking device according to any one of claims 1 to 9, characterized in that: The airbag body is a rubber airbag body.

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