Leakage monitoring and repair method and system for special fluid pipeline transportation

Abstract

The present invention provides a leakage monitoring and repair method and system for pipeline transportation of special fluids. It includes pressurization / reliquefaction equipment, special structure pipelines, pressure sensors, polyurethane foam sealants, data servers, remote data terminals, fluororubber O-rings, polyurethane foam sealant mounting holes, and pressure sensor mounting holes. The present invention comprehensively considers the leakage scenarios that may occur in the pipeline transportation process of special fluids, and takes the leakage risks of special fluids such as gas hydrogen-liquid hydrogen and gas nitrogen-liquid nitrogen in pipeline transportation as the main starting point. The method and system described in the present invention can scientifically and conveniently solve the leakage monitoring and repair problems in pipeline transportation of special fluids, which has important practical significance for ensuring the safety performance of pipeline transportation systems, and further promotes the positive development of pipeline transportation methods.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor monitoring and pipeline repair, and in particular to a leakage monitoring-repairing method and system for special fluid pipeline transportation. Background Art

[0002] Pipeline transportation is a mode of transportation that uses pipelines as a means of transportation to transport liquid and gas materials over long distances. It is a mode of transportation that specifically transports oil, coal and chemical products from the production site to the market. Pipeline transportation has a large transportation volume, strong sustainability, economical and safe, a smooth transportation process and relatively low investment, high transportation efficiency, and can achieve automatic control. Pipeline transportation is widely used in the transportation of various fluids, including some special fluids with certain dangers, such as natural gas, liquefied gas, liquid hydrogen, liquid nitrogen, methane, etc., so pipeline leakage monitoring technology is needed to ensure the safety of special fluid transportation. Existing measures include drone monitoring, temperature-sensitive optical fiber, thermal imaging detectors, etc. In comparison, the cost of sensor monitoring facilities is relatively low. Combining sensors with the Internet greatly saves human and material resources. Combined with the special structure pipeline of the present invention, it can quickly locate the leakage location. Moreover, when transporting cryogenic fluids, the nested structure design of the first and second layers of the pipeline of the present invention can play a good role in heat preservation, which largely avoids the volatilization of cryogenic fluids. In summary, the present invention takes into account both the practical performance and operability of the system device, and can scientifically and conveniently solve the problem of leakage risk monitoring in pipeline transportation. This has practical significance for ensuring the safety performance of special fluids with certain dangers in pipeline transportation, and further promotes the positive development of pipeline transportation methods. Summary of the invention

[0003] According to the above proposal, in order to make up for the shortcomings of high cost and low convenience of existing pipeline transportation leakage monitoring technology, a special fluid pipeline transportation monitoring system and method are provided to ensure the safety of pipeline transportation of special fluids.

[0004] The technical means adopted by the present invention are as follows:

[0005] A special fluid pipeline leakage monitoring and repair system, comprising:

[0006] Pressurization / reliquefaction equipment, special structure pipeline, pressure sensor, polyurethane foam sealant, data server, remote data terminal, fluororubber O-ring, polyurethane foam sealant installation hole, pressure sensor installation hole, first layer pipeline, second layer pipeline, third layer pipeline; the special structure pipeline is a multi-layer nested structure, which is divided into three layers from the inside to the outside, the first layer pipeline and the second layer pipeline are respectively used for transporting the gas form and liquid form of a special fluid, the third layer pipeline is arranged in sections, and is connected to the second layer pipeline by a fluororubber O-ring, and each section forms a closed chamber; the third layer pipeline is provided with a polyurethane foam sealant installation hole and a pressure sensor installation hole; the pressure sensor is installed to each of the sealed pipelines through the pressure sensor installation hole The polyurethane foam sealant is installed in each sealed chamber of the sealed pipe through the polyurethane foam sealant installation hole and sealed with sealant; the pressure sensor has a number in each closed chamber, which is used to monitor the leakage status of the special gas transportation pipeline in the second-layer pipeline, and provide pressure value change data to the data server; the data server obtains the pressure value change data of the pressure sensor through the reading and writing device, and transmits the data to the remote data terminal; the remote data terminal receives and analyzes the information from the data server, and if the pressure value changes, it will feedback the alarm information to the terminal operator, and trigger the polyurethane foam sealant nozzle to spray the polyurethane foam sealant until the chamber is full.

[0007] Furthermore, the pressure sensor is arranged on the sensor mounting hole on the third-layer pipeline, and transmits the monitored data information of the pressure value change of each closed chamber of the third-layer pipeline to the data server in real time.

[0008] Furthermore, the special structure pipeline is a multi-layer nested structure, which is divided into three layers from the inside to the outside. The first and second layers of pipelines are respectively used to transport the gas form and liquid form of a special fluid. The third layer of pipeline is arranged in sections and is connected to the second layer of pipeline by a fluororubber O-ring. Each section forms a closed chamber.

[0009] Furthermore, the data server transmits the real-time monitoring data of the pressure sensor to a remote data terminal.

[0010] Furthermore, the pressure sensor monitors the leakage status of the sub-chamber in real time, and can quickly determine the leakage location when leakage occurs.

[0011] Furthermore, the remote data terminal analyzes the real-time monitoring data of the pressure sensor in each chamber of the third layer of pipe.

[0012] The remote data terminal generates feedback according to the pressure value change in the sealed chamber of the third-layer pipeline. When a leak occurs in the second-layer pipeline transportation, the pressure sensor in the sealed chamber detects the pressure value change, and the remote data terminal feeds back a leak alarm.

[0013] Furthermore, the remote data terminal operator can determine the leakage chamber based on the sensor that sends the signal, thereby determining the leakage location.

[0014] Furthermore, after receiving the leakage signal sent by the pressure sensor, the polyurethane foam sealant nozzle sprays out foam glue until the entire cavity is filled.

[0015] Furthermore, the pressurized reliquefaction equipment respectively extracts the liquid transported in the first layer of pipelines and the gas transported in the second layer for re-pressurization, so that the fluid in the pipe maintains the initial pressure value and continues to be transported; if part of the liquid in the first layer of pipelines is vaporized, it can also be re-liquefied by pressurization to ensure the fluid transportation state in each layer of pipelines.

[0016] The present invention also includes a special fluid pipeline transportation monitoring method, comprising the following steps:

[0017] Step S1: installing the pressure sensor inside the third layer of each section of the special structure pipeline through the sensor installation hole of each section, and sealing the sensor installation hole with a sealant;

[0018] Step S2: When transporting special fluids, the pressure sensor transmits the monitored pressure value variation range data information of each closed chamber of the special structure pipeline to the data server in real time;

[0019] Step S3: the data server processes the data information received from the pressure sensor and transmits the processed data to the remote data terminal;

[0020] Step S4: The remote data terminal receives the data information from the data server and dynamically analyzes the pressure value of the data in real time. When the gas transport in the second-layer pipeline leaks, the pressure sensor in the closed chamber of the third-layer pipeline detects the pressure value change. The remote data terminal feeds back a leakage alarm and triggers the polyurethane foam sealant spray head. The remote data terminal staff can determine the leakage chamber according to the sensor that sends the signal, thereby determining the leakage location;

[0021] Step S5: After receiving the leakage signal from the remote data terminal, the polyurethane foam sealant nozzle sprays out foam and fills the entire chamber, thereby temporarily preventing leakage and leaving time for the terminal operator;

[0022] Step S6: After the remote data terminal operator arranges for an operator to repair and solve the leakage problem, the system resumes normal operation and continues monitoring;

[0023] Step S7: The pressurization / reliquefaction equipment separates the liquid transported in the first layer and the gas transported in the second layer and re-pressurizes them so that the pipeline maintains the initial pressure value and continues transportation.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] The special fluid pipeline transportation monitoring system and method provided by the present invention give full play to the role of the sensing system, perform intelligent identification and monitoring of the special fluid pipeline transportation situation, and finally provide feedback to the received information through a data terminal to achieve the role of convenient and economical monitoring. The special fluid pipeline transportation monitoring system is installed as an integrated device with the pipeline, which helps to avoid safety accidents caused by pipeline leakage during the pipeline transportation of dangerous fluids without hindering the internal space of the pipeline transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a schematic diagram of the overall system of the present invention.

[0028] Figure 2 It is a schematic diagram of the pipeline structure of the present invention.

[0029] Figure 3 It is a flow chart of the system of the present invention when it is running.

[0030] In the figure: 1 is a pressurization / reliquefaction device, 2 is a special structure pipeline, 3 is a pressure sensor, 4 is a polyurethane foam sealant, 5 is a data server, 6 is a remote data terminal, 7 is a fluororubber O-ring, 8 is a polyurethane foam sealant installation hole, 9 is a pressure sensor installation hole, 10 is a first layer of pipelines, 11 is a second layer of pipelines, and 12 is a third layer of pipelines. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] like Figure 1-2 As shown, the present invention specifically provides a special fluid pipeline transportation monitoring system, including a pressurization / reliquefaction device 1, a special structure pipeline 2, a pressure sensor 3, a polyurethane foam sealant 4, a data server 5, a remote data terminal 6, a fluororubber O-ring 7, a polyurethane foam sealant installation hole 8, a pressure sensor installation hole 9, a first layer of pipeline 10, a second layer of pipeline 11, and a third layer of pipeline 12.

[0034] As a preferred embodiment, in the present application, the special structure pipeline 2 adopts a multi-layer nested structure, which is divided into three layers from the inside to the outside. The first layer of pipeline 10 and the second layer of pipeline 11 are respectively used to transport the gas form and liquid form of a special fluid. The third layer of pipeline is arranged in sections, and is connected to the second layer of pipeline by a fluororubber O-ring, and each section forms a closed chamber with a length of 10 meters; the first layer of pipeline 10 transports the liquid form of the special fluid; the second layer of pipeline 11 transports the gas form of the special fluid, and the second layer of pipeline 11 and the third layer of pipeline 12 are connected by the fluororubber O-ring 7 to form a closed chamber; the third layer of pipeline 12 has the polyurethane foam sealant installation hole 8 and the pressure sensor installation hole 9; the pressure sensor 3 is installed to the seal through the pressure sensor installation hole 9 Each section of the pipeline is in a closed chamber and sealed with sealant; the polyurethane foam sealant 4 is installed in each closed chamber of the sealed pipeline through the polyurethane foam sealant installation hole 8 and sealed with sealant; the pressure sensor 3 has a number in each closed chamber to monitor the leakage of the special gas transportation pipeline in the second-layer pipeline and provide pressure change data to the data server; the data server 5 obtains the pressure value change data of the pressure sensor 3 through the read-write device, and transmits the data to the remote data terminal 6; the remote data terminal 6 receives the information from the data server and analyzes it. If the pressure value changes, it will feedback the alarm information to the terminal operator and trigger the polyurethane foam sealant 4 nozzle to spray the polyurethane foam sealant to fill the chamber, temporarily solving the problem of gas leakage in the second-layer pipeline.

[0035] Preferably, the pressure sensor is installed on the sensor installation hole on the third-layer pipeline, and transmits the monitored pressure value change range data information of each closed chamber of the third-layer pipeline of the special structure pipeline to the data server in real time.

[0036] In the present application, as an embodiment, each section of the special structure pipeline is 10 meters long and is divided into three layers. The first layer transports the liquid form of the special fluid, and the second layer transports the gas form of the special fluid. The second and third layers are connected by a fluororubber O-ring to form a closed chamber.

[0037] As a preferred embodiment, the pressure sensor monitors the leakage condition in each chamber, and can quickly determine the leakage location when a leakage occurs. The data server can transmit the real-time monitoring data of the pressure sensor to the remote data terminal. The remote data terminal analyzes the real-time monitoring data of the pressure sensor in each chamber of the special structure pipeline.

[0038] The remote data terminal generates feedback based on the pressure value change in the closed chamber of the third-layer pipeline. When the gas transportation in the second-layer pipeline leaks, the pressure sensor in the closed chamber detects the pressure value change, and the remote data terminal feeds back a leakage alarm.

[0039] In the present application, the remote data terminal receives and analyzes information from the data server. If the pressure value changes, an alarm message is fed back to the terminal operator. The remote data terminal staff can determine the leakage chamber based on the sensor that sends the signal, thereby determining the leakage location.

[0040] After receiving the leakage signal from the pressure sensor, the remote data terminal triggers the polyurethane foam sealant nozzle to spray foam and fill the entire chamber, temporarily solving the gas leakage problem in the second-layer pipeline and leaving time for the staff to arrive.

[0041] The pressurization / reliquefaction equipment separates the liquid transported in the first layer and the gas transported in the second layer and re-pressurizes them so that the pipeline maintains the initial pressure value and continues transportation.

[0042] As a preferred embodiment, the present invention further comprises a special fluid pipeline transportation monitoring method, using the special fluid pipeline transportation monitoring system as described above, the special fluid pipeline transportation monitoring method comprises the following steps:

[0043] Step S1: installing the pressure sensor inside the third layer of each section of the special structure pipeline through the sensor installation hole of each section, and sealing the sensor installation hole with a sealant;

[0044] Step S2: When transporting special fluids, the pressure sensor transmits the monitored pressure value variation range data information of each closed chamber of the special structure pipeline to the data server in real time;

[0045] Step S3: the data server processes the data information received from the pressure sensor and transmits the processed data to the remote data terminal;

[0046] Step S4: The remote data terminal receives the data information from the data server and dynamically analyzes the pressure value of the data in real time. When the gas transport in the second-layer pipeline leaks, the pressure sensor in the closed chamber of the third-layer pipeline detects the pressure value change. The remote data terminal feeds back a leakage alarm and triggers the polyurethane foam sealant spray head. The remote data terminal staff can determine the leakage chamber according to the sensor that sends the signal, thereby determining the leakage location;

[0047] Step S5: After receiving the leakage signal from the remote data terminal, the polyurethane foam sealant nozzle sprays out foam and fills the entire chamber, thereby temporarily preventing leakage and leaving time for the terminal operator;

[0048] Step S6: After the remote data terminal operator arranges for an operator to repair and solve the leakage problem, the system resumes normal operation and continues monitoring;

[0049] Step S7: The pressurization / reliquefaction equipment separates the liquid transported in the first layer and the gas transported in the second layer and re-pressurizes them so that the pipeline maintains the initial pressure value and continues transportation.

[0050] The special fluid pipeline transportation monitoring system and method provided by the present invention give full play to the role of the sensing system, perform intelligent identification and monitoring of the special fluid pipeline transportation situation, and finally provide feedback to the received information through a data terminal to achieve the role of convenient and economical monitoring. The special fluid pipeline transportation monitoring system is installed as an integrated device with the pipeline, which helps to avoid safety accidents caused by pipeline leakage during the pipeline transportation of dangerous fluids without hindering the internal space of the pipeline transportation.

[0051] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0052] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0054] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0055] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0056] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special fluid pipeline leakage monitoring and repair system, characterized in that: The system is used to transport special fluids; The special fluid includes: special liquid and special gas; the system includes: the special fluid is a cryogenic fluid; Pressurization / reliquefaction equipment (1), special structure pipeline (2), pressure sensor (3), polyurethane foam sealant (4), data server (5), remote data terminal (6), fluororubber O-ring (7), polyurethane foam sealant installation hole (8), pressure sensor installation hole (9), first layer pipeline (10), second layer pipeline (11), third layer pipeline (12); The special structure pipeline (2) is a multi-layer nested structure, which is divided into three layers from the inside to the outside. The first layer pipeline (10) and the second layer pipeline (11) are respectively used to transport the gas form and liquid form of a special fluid. The third layer pipeline is arranged in sections and is connected to the second layer pipeline by a fluororubber O-ring, and each section forms a closed chamber. The third layer pipeline (12) is provided with a polyurethane foam sealant installation hole and a pressure sensor installation hole. The pressure sensor (3) is installed in each closed chamber of the sealed pipeline through the pressure sensor installation hole and is sealed with a sealant. The polyurethane foam sealant (4) is installed in each closed chamber of the sealed pipeline through the polyurethane foam sealant installation hole. Each section of the sealed pipeline is sealed in a sealed chamber and sealed with a sealant; the pressure sensor (3) has a number in each sealed chamber, which is used to monitor the leakage of the special gas transportation pipeline in the second layer pipeline and provide pressure value change data to the data server; the data server (5) obtains the pressure value change data of the pressure sensor through a reading and writing device, and transmits the data to a remote data terminal; the remote data terminal (6) receives and analyzes the information from the data server, and if the pressure value changes, it feeds back an alarm message to the terminal operator and triggers the polyurethane foam sealant (4) nozzle to spray the polyurethane foam sealant until the chamber is full; The pressurization / The reliquefaction equipment (1) respectively extracts the liquid transported in the first layer of pipelines and the gas transported in the second layer and re-pressurizes them so that the fluid in the pipeline maintains the initial pressure value and continues to be transported; if part of the liquid in the first layer of pipelines is gasified, it can also be re-liquefied by pressurization to ensure the fluid transportation state in each layer of pipelines.

2. The special fluid pipeline transportation leakage monitoring-repair system according to claim 1 is characterized in that: The pressure sensor (3) is arranged on a sensor mounting hole on the third-layer pipeline, and transmits the monitored data information on the pressure value changes of each closed chamber of the third-layer pipeline to the data server (5) in real time.

3. The special fluid pipeline transportation leakage monitoring-repairing system according to claim 1 is characterized in that: The pressure sensor (3) monitors the leakage condition of the sub-chamber in real time and can quickly determine the leakage position when leakage occurs.

4. The special fluid pipeline transportation leakage monitoring-repairing system according to claim 1 is characterized in that: The remote data terminal (6) analyzes the real-time monitoring data of the pressure sensor in each chamber of the third layer pipe; The remote data terminal (6) generates feedback according to the pressure value change in the sealed chamber of the third-layer pipeline. When a leak occurs in the second-layer pipeline transportation, the pressure sensor in the sealed chamber detects the pressure value change, and the remote data terminal feeds back a leakage alarm.

5. The special fluid pipeline transportation leakage monitoring-repairing system according to claim 1 is characterized in that: The operator of the remote data terminal (6) can determine the leakage chamber based on the sensor that sends the signal, thereby determining the leakage location.

6. The special fluid pipeline transportation leakage monitoring-repairing system according to claim 1 is characterized in that: After receiving the leakage signal from the pressure sensor, the polyurethane foam sealant (4) nozzle sprays the foam glue until it fills the entire cavity.

7. A special fluid pipeline transportation monitoring method, using the special fluid pipeline transportation leakage monitoring-repairing system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: installing the pressure sensor inside the third layer of each section of the special structure pipeline through the sensor installation hole of each section, and sealing the sensor installation hole with a sealant; S2: When transporting special fluids, the pressure sensor transmits the monitored pressure value variation range data information of each closed chamber of the special structure pipeline to the data server in real time; S3: the data server processes the data information received from the pressure sensor and transmits it to the remote data terminal; S4: The remote data terminal will receive the data information from the data server and dynamically analyze the pressure value of the data in real time. When the gas transport in the second-layer pipeline leaks, the pressure sensor in the closed chamber of the third-layer pipeline detects the pressure value change, and the remote data terminal feedbacks the leakage alarm and triggers the polyurethane foam sealant nozzle. The remote data terminal staff can determine the leakage chamber according to the sensor that sends the signal, thereby determining the leakage location; S5: After receiving the leakage signal from the remote data terminal, the polyurethane foam sealant nozzle sprays out foam and fills the entire chamber, which temporarily stops the leakage and gives the terminal operator time; S6: After the remote data terminal operator arranges for an operator to repair and solve the leakage problem, the system resumes normal operation and continues monitoring; S7: The pressurization / reliquefaction equipment separates the liquid transported in the first layer and the gas transported in the second layer and re-pressurizes them so that the pipeline maintains the initial pressure value and continues transportation.

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