CN221035296U - Gas pipeline micro-leakage monitoring system based on pipeline generator - Google Patents
Gas pipeline micro-leakage monitoring system based on pipeline generator Download PDFInfo
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Abstract
The utility model provides a gas pipeline micro-leakage monitoring system based on a pipeline generator, which comprises a main gas pipe and a main pressure regulator arranged on the main gas pipe, wherein the main pressure regulator is arranged on the main gas pipe; the two ends of the main pressure regulator are connected in parallel with a micro-leakage detection pipeline, a pipeline generator and a pressure regulating valve are arranged in the micro-leakage detection pipeline, and the minimum flow value set by the pressure regulating valve is smaller than the minimum flow value of the main pressure regulator; the pipeline generator charges a storage battery, and the storage battery supplies power to the monitoring assembly. The beneficial effects are that: the pressure regulating valve with smaller minimum flow value is arranged in the micro-leakage detection pipeline connected in parallel, and can be ensured to be in a stable air supply state when the pipeline at the rear end of the main pressure regulator has smaller flow air outlet quantity, thereby providing conditions for detecting and positioning the micro-leakage. The pipeline generator can continuously generate electric energy to provide continuous power supply for the storage battery and the monitoring component in the normal air supply process, and the operation reliability of the monitoring component is improved.
Description
Technical Field
The utility model relates to a monitoring system for gas pipeline leakage, in particular to a gas pipeline micro-leakage monitoring system based on a pipeline generator, and belongs to the technical field of gas monitoring.
Background
The biggest risk in the pipeline natural gas conveying process is leakage of a gas pipeline, and a large amount of gas can be leaked due to the rupture of the gas pipeline caused by construction or other reasons, so that the leakage point is very easy to find and can be treated in time; however, due to the problem of pipeline quality or the problem of connection between pipelines, the trace leakage of the fuel gas is difficult to find, and when the concentration of the fuel gas is concentrated to a certain degree, explosion and fire disaster are also caused, so that the damage degree of the trace leakage of the fuel gas pipeline is far greater than that of the large leakage of the fuel gas caused by pipeline rupture. At present, the gas conveying field cannot accurately monitor micro leakage in a pipeline.
The existing monitoring system adopts a storage battery to supply power to the communication equipment, and because the electric quantity of the storage battery is limited, the monitoring system can continuously send signals to the background for a plurality of times under the condition that micro-leakage exists in a pipeline, the electric quantity of the storage battery can be quickly lost, and the operation reliability of the monitoring system can not be ensured.
The pipeline generator is a device which is arranged on a pipeline with liquid or gas flowing and generating pressure and flow, and generates electricity by utilizing the flow and the pressure, and the pipeline generator can convert kinetic energy of fluid into electric energy to provide continuous electric power for electric equipment nearby the pipeline, but how to apply the pipeline generator to micro-leakage monitoring of a gas pipeline is always an industrial problem.
Disclosure of Invention
The utility model aims to: the utility model aims to overcome the defects of the prior art and provides a pipeline generator-based gas pipeline micro-leakage monitoring system which can monitor the micro-leakage of gas in a gas conveying pipeline and can provide continuous and reliable monitoring signals.
The technical scheme is as follows: a gas pipeline micro-leakage monitoring system based on a pipeline generator comprises a main gas pipe and a main pressure regulator arranged on the main gas pipe; the two ends of the main pressure regulator are connected in parallel with a micro-leakage detection pipeline, a pipeline generator and a pressure regulating valve are arranged in the micro-leakage detection pipeline, and the minimum flow value set by the pressure regulating valve is smaller than the minimum flow value of the main pressure regulator; the pipeline generator charges a storage battery, and the storage battery supplies power to the monitoring assembly.
The gas needs to be decompressed before entering the user terminal through long distance transmission, in order to meet the gas requirement of a customer, the minimum flow value set by a main pressure regulator in a main gas pipe is usually larger, the range value of the main pressure regulator which can be in stable flow is limited by the structural parameters of the main pressure regulator, and the main pressure regulator can be in a stable gas supply state only when the gas consumption is between the minimum flow value and the maximum flow value.
The pressure regulating valve with smaller minimum flow value is arranged in the micro-leakage detection pipeline connected in parallel, and can be ensured to be in a stable air supply state when the pipeline at the rear end of the main pressure regulator has smaller flow air outlet quantity, thereby providing conditions for detecting and positioning the micro-leakage. The pipeline generator can continuously generate electric energy to provide continuous power supply for the storage battery and the monitoring component in the normal air supply process, and the operation reliability of the monitoring component is improved.
In order to accurately monitor the micro leakage signal, the monitoring assembly comprises a main flowmeter, a secondary flowmeter, a communication device and a background monitoring system, wherein the main flowmeter is arranged in a main gas pipe at the rear end of the main pressure regulator, the secondary flowmeter is arranged in a micro leakage detection pipeline at the rear end of the pressure regulating valve, and data signals of the main flowmeter and the secondary flowmeter are remotely transmitted to the background monitoring system through the communication device.
The communication device periodically sends flow data signals of the main flow meter and the auxiliary flow meter to a background monitoring system, when the flow data values monitored by the main flow meter and the auxiliary flow meter are zero, the background monitoring system marks the time to form historical data, wherein the time is free of user gas consumption and leakage; when no flow data of the main flowmeter occur in the period and flow data of the auxiliary flowmeter occur at the same time, the background monitoring system performs early warning when the leakage risk possibly exists in the area and the sporadic situation possibly exists, meanwhile, the signal acquisition period in the period can be shortened, flow data analysis is performed, and if the flow is in a continuous stable value, the possibility of micro leakage is high; if the flow value is restored to zero after a period of time, the probability of being an occasional case is high; this period may be monitored for a number of times in order to further improve the accuracy of the microleakage determination.
In order to monitor micro leakage more accurately, the power generation parameters of the pipeline generator are remotely sent to a background monitoring system through a communication device, and the background monitoring system controls the monitoring frequency of the monitoring assembly on the auxiliary flowmeter signals according to the power generation parameters of the pipeline generator.
When the power generation parameters of the pipeline power generator are lower than the normal power generation parameters, the background monitoring system activates the signal acquisition function of the auxiliary flowmeter, and the signal acquisition function of the auxiliary flowmeter is in a dormant state at ordinary times, so that the energy is saved more, a large amount of invalid data is avoided, and the monitoring accuracy is improved.
Preferably, in order to further improve the monitoring performance of the utility model, the monitoring assembly comprises an inlet pressure gauge arranged on the main gas pipe and positioned at the front end of the main pressure regulator and an outlet pressure gauge positioned at the rear end of the main pressure regulator, and data signals of the inlet pressure gauge and the outlet pressure gauge are remotely transmitted to a background monitoring system through communication devices respectively. When the background monitoring system monitors that the data value of the inlet pressure gauge is unchanged and the data value of the outlet pressure gauge is smaller, the background monitoring system can judge that the main gas pipe is leaked greatly or the main pressure regulator is failed, so that the monitoring performance of the utility model is further improved.
The preferred option, in order to be able to be in order to find that the main gas pipe has accident to leak or when the main pressure regulator breaks down, can avoid dangerous emergence or dangerous expansion, be equipped with the master control valve on the main gas pipe between main pressure regulator and the import manometer, backstage monitored control system passes through communication device and master control valve control connection. When the background monitoring system finds that the main gas pipe is leaked greatly or the main pressure regulator fails, the background monitoring system controls the main control valve to cut off the gas supply of the main gas pipe through the communication device, so that danger occurrence or danger expansion can be effectively avoided.
Preferably, in order to further improve the detection accuracy of the present utility model, the minimum flow value set by the pressure regulating valve is not greater than the gas consumption of a single gas burner. The minimum flow of the main gas pipe is usually the gas consumption of a single gas cooking range, and when the minimum flow value set by the pressure regulating valve is smaller than the value, the detection precision of micro leakage can be further improved.
The beneficial effects are that: the pressure regulating valve with smaller minimum flow value is arranged in the micro-leakage detection pipeline connected in parallel, and can be ensured to be in a stable air supply state when the pipeline at the rear end of the main pressure regulator has smaller flow air outlet quantity, thereby providing conditions for detecting and positioning the micro-leakage. The pipeline generator can continuously generate electric energy to provide continuous power supply for the storage battery and the monitoring component in the normal air supply process, and the operation reliability of the monitoring component is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
Fig. 2 is a control schematic of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiments will be described in detail below with reference to the accompanying drawings.
As shown in the figure, a gas pipeline micro-leakage monitoring system based on a pipeline generator 4 comprises a main gas pipe 1 and a gas pipeline micro-leakage monitoring system arranged on the main gas pipe 1; the two ends of the main pressure regulator 2 are connected in parallel with a micro-leakage detection pipeline 3, a pipeline generator 4 and a pressure regulating valve 5 are arranged in the micro-leakage detection pipeline 3, and the minimum flow value set by the pressure regulating valve 5 is smaller than the minimum flow value of the main pressure regulator 2; the pipe generator 4 charges a battery 6, which battery 6 powers a monitoring assembly 7.
The gas needs to be decompressed before being conveyed into the user end through a long distance, in order to meet the gas requirement of a customer, the minimum flow value set by the main pressure regulator 2 in the main gas pipe 1 is usually larger, the range value of the main pressure regulator 2 which can be in stable flow is limited by the structural parameters of the main pressure regulator 2, and the main pressure regulator 2 can be in a stable gas supply state only when the gas consumption is between the minimum flow value and the maximum flow value.
The pressure regulating valve 5 with smaller minimum flow value is arranged in the micro-leakage detection pipeline 3 which is connected in parallel, and when the pipeline at the rear end of the main pressure regulator 2 has smaller flow gas outlet, the pressure regulating valve 5 can be ensured to be in a stable gas supply state, thereby providing conditions for detecting and positioning the micro-leakage. The pipeline generator 4 can continuously generate electric energy to supply power to the storage battery 6 and the monitoring component 7 in the normal air supply process, so that the operation reliability of the monitoring component 7 is improved.
In order to accurately monitor the micro leakage signal, the monitoring assembly 7 comprises a main flow meter 71, a secondary flow meter 72, a communication device 73 and a background monitoring system 74, wherein the main flow meter 71 is arranged in the main gas pipe 1 at the rear end of the main pressure regulator 2, the secondary flow meter 72 is arranged in the micro leakage detection pipeline 3 at the rear end of the pressure regulating valve 5, and data signals of the main flow meter 71 and the secondary flow meter 72 are remotely transmitted to the background monitoring system 74 through the communication device 73.
The communication device 73 periodically sends flow data signals of the main flow meter 71 and the auxiliary flow meter 72 to the background monitoring system 74, when the flow data values monitored by the main flow meter 71 and the auxiliary flow meter 72 are zero, the background monitoring system 74 marks the progress of the period to form historical data, wherein the period is free of user gas consumption and leakage; when the main flowmeter 71 has no flow data in the period and the auxiliary flowmeter 72 has flow data, the background monitoring system 74 performs early warning to ensure that the leakage risk and the sporadic condition possibly exist in the area, meanwhile, the signal acquisition period in the period can be shortened to perform flow data analysis, and if the flow is in a continuous stable value, the possibility of micro leakage is high; if the flow value is restored to zero after a period of time, the probability of being an occasional case is high; this period may be monitored for a number of times in order to further improve the accuracy of the microleakage determination.
In order to more accurately monitor the micro leakage, the power generation parameters of the pipeline generator 4 are remotely sent to the background monitoring system 74 through the communication device 73, and the background monitoring system 74 controls the monitoring frequency of the signal of the auxiliary flowmeter 72 by the monitoring assembly 7 according to the power generation parameters of the pipeline generator 4.
When the power generation parameter of the pipeline power generator 4 is lower than the normal power generation parameter, the background monitoring system 74 activates the signal acquisition function of the auxiliary flowmeter 72, and the signal acquisition function of the auxiliary flowmeter 72 is in a dormant state at ordinary times, so that more energy can be saved, a large amount of invalid data can be avoided, and the monitoring accuracy is improved.
In order to further improve the monitoring performance of the present utility model, the monitoring assembly 7 includes an inlet pressure gauge 75 installed on the main gas pipe 1 and located at the front end of the main pressure regulator 2, and an outlet pressure gauge 76 located at the rear end of the main pressure regulator 2, where data signals of the inlet pressure gauge 75 and the outlet pressure gauge 76 are remotely sent to the background monitoring system 74 through the communication device 73, respectively. When the background monitoring system 74 monitors that the data value of the inlet pressure gauge 75 is unchanged and the data value of the outlet pressure gauge 76 is smaller, the background monitoring system 74 can judge that the main gas pipe 1 has larger leakage or the main pressure regulator 2 has faults, so that the monitoring performance of the utility model is further improved.
In order to avoid danger or danger expansion when accident leakage of the main gas pipe 1 or failure of the main pressure regulator 2 is found, a main control valve 8 is arranged between the main pressure regulator 2 and an inlet pressure gauge 75 on the main gas pipe 1, and the background monitoring system 74 is in control connection with the main control valve 8 through a communication device 73. When the background monitoring system 74 finds that the main gas pipe 1 has larger leakage or the main pressure regulator 2 has faults, the background monitoring system 74 controls the main control valve 8 to cut off the gas supply of the main gas pipe 1 through the communication device 73, so that the occurrence of danger or the expansion of danger can be effectively avoided.
In order to further improve the detection accuracy of the present utility model, the minimum flow value set by the pressure regulating valve 5 is not greater than the gas consumption of a single gas burner. In general, the minimum flow rate of the main gas pipe 1 is the gas consumption of a single gas burner, and when the minimum flow rate value set by the pressure regulating valve 5 is smaller than the value, the detection accuracy of the micro-leakage can be further improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A gas pipeline micro-leakage monitoring system based on a pipeline generator comprises a main gas pipe (1) and a main pressure regulator (2) arranged on the main gas pipe (1); the method is characterized in that: the two ends of the main pressure regulator (2) are connected with a micro-leakage detection pipeline (3) in parallel, a pipeline generator (4) and a pressure regulating valve (5) are arranged in the micro-leakage detection pipeline (3), and the minimum flow value set by the pressure regulating valve (5) is smaller than the minimum flow value of the main pressure regulator (2); the pipeline generator (4) charges a storage battery (6), and the storage battery (6) supplies power for the monitoring assembly (7).
2. The pipeline generator based gas pipeline micro-leakage monitoring system of claim 1, wherein: the monitoring assembly (7) comprises a main flowmeter (71), a secondary flowmeter (72), a communication device (73) and a background monitoring system (74), wherein the main flowmeter (71) is arranged in a main gas pipe (1) at the rear end of a main pressure regulator (2), the secondary flowmeter (72) is arranged in a micro-leakage detection pipeline (3) at the rear end of a pressure regulating valve (5), and data signals of the main flowmeter (71) and the secondary flowmeter (72) are remotely transmitted to the background monitoring system (74) through the communication device (73).
3. The pipeline generator based gas pipeline micro-leakage monitoring system of claim 2, wherein: the power generation parameters of the pipeline power generator (4) are remotely transmitted to a background monitoring system (74) through a communication device (73), and the background monitoring system (74) controls the monitoring frequency of the monitoring assembly (7) to the signal of the auxiliary flowmeter (72) according to the power generation parameters of the pipeline power generator (4).
4. The pipeline generator based gas pipeline micro-leakage monitoring system of claim 2, wherein: the monitoring assembly (7) comprises an inlet pressure gauge (75) arranged on the main gas pipe (1) and positioned at the front end of the main pressure regulator (2) and an outlet pressure gauge (76) positioned at the rear end of the main pressure regulator (2), and data signals of the inlet pressure gauge (75) and the outlet pressure gauge (76) are remotely transmitted to the background monitoring system (74) through the communication device (73) respectively.
5. The pipeline generator based gas pipeline micro-leakage monitoring system according to claim 4, wherein: the main gas pipe (1) is provided with a main control valve (8) between the main pressure regulator (2) and the inlet pressure gauge (75), and the background monitoring system (74) is in control connection with the main control valve (8) through a communication device (73).
6. The pipeline generator based gas pipeline micro-leakage monitoring system of claim 1, wherein: the minimum flow value set by the pressure regulating valve (5) is not larger than the gas consumption of a single gas burner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322856157.1U CN221035296U (en) | 2023-10-24 | 2023-10-24 | Gas pipeline micro-leakage monitoring system based on pipeline generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322856157.1U CN221035296U (en) | 2023-10-24 | 2023-10-24 | Gas pipeline micro-leakage monitoring system based on pipeline generator |
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| CN221035296U true CN221035296U (en) | 2024-05-28 |
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| CN202322856157.1U Active CN221035296U (en) | 2023-10-24 | 2023-10-24 | Gas pipeline micro-leakage monitoring system based on pipeline generator |
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