Safety assessment method and system for fuel gas pressure regulating facility, terminal and medium

Abstract

The invention discloses a safety assessment method and system for a gas pressure regulating facility, a terminal and a medium. The method comprises the following steps: acquiring a plurality of types of risk events corresponding to the gas pressure regulating facility and acquiring a risk control measure corresponding to each type of risk event; safety level information corresponding to each risk control measure is determined, and a safety level code corresponding to the current gas pressure regulating facility is determined based on the safety level information; and performing safety evaluation on the current gas pressure regulating facility based on the safety level code. The safety level code is generated by comprehensively evaluating the risk events related to the gas pressure regulating facility and the safety level information of the control measures of the risk events, so that the safety state of the gas pressure regulating facility can be systematically evaluated, and a scientific basis is provided for taking effective maintenance and management measures in time.

Description

Technical Field

[0001] The present invention relates to the field of urban gas, and in particular to a safety assessment method, system, terminal and medium for a gas pressure regulating facility. Background Art

[0002] As a key component of urban gas infrastructure, gas pressure regulating facilities play a vital role in ensuring the safety of gas supply. However, existing technologies mainly classify equipment types based on the working principle of gas pressure regulators and the required pressure level, and lack a systematic and scientific equipment selection and safety evaluation method. This situation leads to challenges in investment cost control and safety management during the construction and subsequent operation of pressure regulating facilities.

[0003] Therefore, the prior art still needs to be improved and enhanced. Summary of the invention

[0004] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a safety assessment method, system, terminal and medium for gas pressure regulating facilities are provided, aiming to solve the investment cost control difficulties and safety management challenges faced by gas pressure regulating facilities in existing urban gas infrastructure during construction and operation due to the lack of systematic and scientific equipment selection and safety evaluation methods.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, the present invention provides a method for safety assessment of a gas pressure regulating facility, wherein the method comprises:

[0007] Obtain several types of risk events corresponding to gas pressure regulating facilities and obtain the risk control measures corresponding to each type of risk event;

[0008] Determine the safety level information corresponding to each of the risk control measures, and determine the safety level code corresponding to the current gas pressure regulating facility based on the safety level information;

[0009] A safety evaluation is performed on the current gas pressure regulating facility based on the safety level code.

[0010] In one implementation, the obtaining of several types of risk events corresponding to the gas pressure regulating facilities includes:

[0011] Obtaining operation data of the gas pressure regulating facility;

[0012] Based on the operation data, obtaining risk events of the gas pressure regulating facility;

[0013] According to the sources of the risk events, the risk events of the gas pressure regulating facilities are classified to obtain several types of risk events.

[0014] In one implementation, the step of obtaining the risk control measures corresponding to each type of risk event includes:

[0015] Based on the several types of risk events, obtain the probability and impact of each type of risk event;

[0016] Based on the probability and impact of each type of risk event, the risk control measures corresponding to each type of risk event are obtained.

[0017] In one implementation, determining the security level information corresponding to each of the risk control measures includes:

[0018] Obtain each of the risk control measures and the safety technical characteristics and applicable scope of each of the risk control measures;

[0019] Based on the safety technical characteristics and the applicable scope, each of the risk control measures is divided into safety design levels to obtain a safety design level corresponding to each of the risk control measures;

[0020] According to each of the risk control measures and the safety design level corresponding to each of the risk control measures, safety level information corresponding to each of the risk control measures is obtained.

[0021] In one implementation, determining the safety level code corresponding to the current gas pressure regulating facility based on the safety level information includes:

[0022] Based on the safety level information, obtaining each target risk control measure corresponding to the current gas pressure regulating facility and the target safety design level corresponding to each target risk control measure;

[0023] According to the preset order of each target risk control measure, the target safety design level corresponding to each target risk control measure is arranged into a group of numbers to obtain the safety level code corresponding to the current gas pressure regulating facility.

[0024] In one implementation, the performing safety evaluation on the current gas pressure regulating facility based on the safety level code includes:

[0025] Based on the security level code, obtaining security technical features;

[0026] Based on the safety technical characteristics, a safety evaluation of the current gas pressure regulating facilities is performed.

[0027] In one implementation, the step of performing a safety evaluation on the current gas pressure regulating facility based on the safety level code further includes:

[0028] The equipment type of the current gas pressure regulating facility is selected based on the safety technical features.

[0029] In a second aspect, an embodiment of the present invention further provides a safety assessment system for gas pressure regulating facilities.

[0030] Wherein, the system comprises:

[0031] The risk control measures acquisition module is used to obtain several types of risk events corresponding to the gas pressure regulating facilities and the risk control measures corresponding to each type of risk event;

[0032] A safety level code determination module, used to determine the safety level information corresponding to each of the risk control measures, and based on the safety level information, determine the safety level code corresponding to the gas pressure regulating facility;

[0033] A safety evaluation module is used to perform a safety evaluation on the gas pressure regulating facility based on the safety level code.

[0034] In a third aspect, an embodiment of the present invention further provides a terminal, wherein the terminal includes a memory, a processor, and a safety assessment program for gas pressure regulating facilities stored in the memory and capable of running on the processor, and when the processor executes the safety assessment program for the gas pressure regulating facility, the steps of the safety assessment method for the gas pressure regulating facility of any one of the above-mentioned schemes are implemented.

[0035] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein a safety assessment program for a gas pressure regulating facility is stored on the computer-readable storage medium, and when the safety assessment program for the gas pressure regulating facility is executed by a processor, the steps of the safety assessment method for the gas pressure regulating facility described in any one of the above-mentioned schemes are implemented.

[0036] Beneficial effects: The present invention provides a safety assessment method for gas pressure regulating facilities. Compared with the prior art, the present invention first obtains several types of risk events corresponding to the gas pressure regulating facilities to ensure the comprehensiveness and pertinence of the assessment and avoid missing any potential safety hazards; and obtains the risk control measures corresponding to each type of risk event, strengthens the understanding of risk events, and ensures the professionalism and effectiveness of the response measures. Then, the safety level information corresponding to each of the risk control measures is determined, and based on the safety level information, the safety level code corresponding to the current gas pressure regulating facility is determined, providing an important quantitative basis for subsequent safety assessments. Finally, the current gas pressure regulating facility is safety evaluated based on the safety level code, so that decision makers can quickly understand the safety status of the current gas pressure regulating facility and take corresponding measures. Through systematic risk identification, quantitative safety level division and clear safety evaluation results, the present invention provides a more scientific and accurate safety management method for gas pressure regulating facilities in urban gas infrastructure, which helps to reduce the probability of safety accidents, improve the operating efficiency of facilities, and effectively control investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A flowchart of a specific implementation of a method for safety assessment of a gas pressure regulating facility provided in an embodiment of the present invention.

[0038] Figure 2 It is a principle block diagram of a safety assessment system for gas pressure regulating facilities provided in an embodiment of the present invention.

[0039] Figure 3 This is a block diagram of the internal structure principle of a terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] In the field of urban gas supply, gas pressure regulating facilities are an important link in ensuring the safety of gas transmission. At present, the selection and safety assessment of pressure regulating facilities are mainly based on the working principle of the pressure regulator and the required pressure level to determine the type of equipment, and there is a lack of a systematic and scientific equipment selection and safety evaluation system. This situation has brought two major problems to the construction and subsequent operation of pressure regulating facilities: one is that it is difficult to effectively control the investment cost; the other is that safety management faces challenges. Due to the lack of simple and easy-to-use evaluation tools and technologies, gas supply companies often need to invest a lot of money in the purchase of advanced equipment during the construction and maintenance of pressure regulating facilities, and require professional personnel for maintenance and management, which increases the complexity and cost of operations. At the same time, this also limits the flexibility and adaptability of gas pressure regulating facilities in different application scenarios, which is not conducive to achieving more refined and efficient gas supply management.

[0042] In order to solve the above problems, this embodiment provides a pulse wave monitoring method based on telemetry photoplethysmography. In specific implementation, this embodiment first obtains several types of risk events corresponding to gas pressure regulating facilities to ensure the comprehensiveness and pertinence of the assessment and avoid missing any potential safety hazards; and obtains the risk control measures corresponding to each type of risk event, strengthens the understanding of risk events, and ensures the professionalism and effectiveness of the response measures. Then, the safety level information corresponding to each of the risk control measures is determined, and based on the safety level information, the safety level code corresponding to the current gas pressure regulating facility is determined, providing an important quantitative basis for subsequent safety assessment. Finally, the current gas pressure regulating facility is evaluated for safety based on the safety level code, so that decision makers can quickly understand the safety status of the current gas pressure regulating facility and take corresponding measures. The present invention provides a more scientific and accurate safety management method for gas pressure regulating facilities in urban gas infrastructure through systematic risk identification, quantitative safety level division and clear safety evaluation results, which helps to reduce the probability of safety accidents, improve the operating efficiency of gas pressure regulating facilities, and effectively control investment costs.

[0043] For example, suppose a town gas company needs to conduct a safety assessment on a gas pressure regulating station in its gas supply network to ensure its stable operation and prevent potential safety accidents. At this time, the town gas company can adopt the method proposed in the present invention. First, obtain several types of risk events corresponding to the gas pressure regulating station to ensure the comprehensiveness and pertinence of the assessment work and avoid missing factors that may threaten the safety of the gas pressure regulating facilities; and obtain the risk control measures corresponding to each type of risk event to enhance the company's understanding and control of potential risks and ensure the professionalism and effectiveness of the response measures. Then, determine the safety level information corresponding to each of the risk control measures, and determine the safety level code corresponding to the current gas pressure regulating station based on the safety level information, which provides an intuitive and quantitative reference for safety assessment. Finally, based on the safety level code, the current gas pressure regulating station is evaluated for safety, and the company can quickly identify the safety level of the current gas pressure regulating station and make reasonable maintenance, upgrade or emergency response decisions accordingly. The method proposed in the present invention not only ensures the safety of the gas pressure regulating station, but also helps the company to achieve effective cost control during construction and operation, while improving the overall operation efficiency and safety of the gas pressure regulating facilities.

[0044] The safety assessment method for gas pressure regulating facilities provided in this embodiment can be applied to smart terminals, such as Figure 1 As shown in , the specific steps include:

[0045] Step S100: obtaining several types of risk events corresponding to gas pressure regulating facilities and obtaining risk control measures corresponding to each type of risk event.

[0046] In this embodiment, first, several types of risk events corresponding to gas pressure regulating facilities are obtained to ensure the integrity of the assessment scope. Then, the risk control measures corresponding to each type of risk event are obtained to enhance the pertinence and effectiveness of the response strategy. This embodiment ensures that safety hazards are fully covered by obtaining several types of risk events corresponding to gas pressure regulating facilities and obtaining risk control measures corresponding to each type of risk event. This can prevent the omission of key risk points during the safety assessment process, thereby laying a solid foundation for the entire assessment process.

[0047] Specifically, the step S100 includes the following steps:

[0048] Step S101, obtaining the operation data of the gas pressure regulating facility;

[0049] Step S102: acquiring risk events of the gas pressure regulating facility based on the operation data;

[0050] Step S103: Classify the risk events of the gas pressure regulating facility according to the source of the risk event to obtain several types of risk events;

[0051] Step S104: Based on the several types of risk events, obtain the probability and impact of each type of risk event;

[0052] Step S105: Based on the probability and impact of each type of risk event, obtain the risk control measures corresponding to each type of risk event.

[0053] In one implementation, in order to obtain several types of risk events, the operation data of the gas pressure regulating facility is first obtained, and the operation data includes but is not limited to pressure data, flow data, temperature data, equipment status data, alarm and fault records, maintenance and repair records, pipeline status data, connection equipment data, abnormal event records, operation logs, safety system data, aging degree data, environmental monitoring data and historical accident data, which provide a basis for subsequent analysis. Then, based on the operation data, the risk events of the gas pressure regulating facility are obtained, and potential safety hazards can be discovered. For example, it is found in the operation data that the outlet pressure of the gas pressure regulating facility has exceeded the normal range of ±0.05MPa five times in the past three months, which indicates that there may be problems with the pressure regulation accuracy, that is, a risk event. Finally, according to the sources of the risk events, the risk events of the gas pressure regulating facilities are classified to obtain several types of risk events, and different types of potential problems are systematically summarized to facilitate the adoption of more targeted management strategies. For example, according to the sources of risk events, the risk events of the gas pressure regulating facilities are classified into 7 aspects: when the risk mainly comes from the performance problems of the pressure regulator itself or improper settings, such as the static characteristics of the pressure regulation do not meet the accuracy requirements of the end user or there is a deviation, in this case, the risk events of the gas pressure regulating facilities are classified as the risk of too low pressure regulation accuracy; when the risk mainly comes from the failure or aging of the equipment itself, such as a large amount of gas release, supply interruption or exceeding the pressure limit of the downstream system or equipment, in this case, the risk events of the gas pressure regulating facilities are classified as the risk of body failure; when the risk mainly comes from problems with upstream or downstream pipelines and equipment, such as overpressure of the upstream pipeline operation pressure or underpressure due to rupture of the upstream and downstream pipelines, in this case, the risk events of the gas pressure regulating facilities are classified as The risk of accidents in upstream and downstream system pipelines or equipment; when the risk mainly comes from the operation of gas pressure regulating facilities by unauthorized third parties, such as human misoperation or damage that causes abnormal operation of gas pressure regulating facilities, in this case, the risk event of gas pressure regulating facilities is classified as the risk of misoperation by a third party; when the risk mainly comes from equipment aging or improper maintenance, such as the safe operation cycle of gas pressure regulating facilities is lower than the maintenance cycle set by management, in this case, the risk event of gas pressure regulating facilities is classified as the risk of reduced long-term operating reliability; when the risk mainly comes from the effectiveness of the early warning system and emergency response mechanism, such as the inability to monitor or supervise the operation of gas pressure regulating facilities in real time, in this case, the risk event of gas pressure regulating facilities is classified as the risk of insufficient accident warning or emergency response capabilities; when the risk mainly comes from natural disasters or other unforeseen emergencies, such as damage to gas pressure regulating facilities from natural disasters or the surrounding environment, in this case, the risk event of gas pressure regulating facilities is classified as the risk of facing sudden disasters.

[0054] In one implementation, after obtaining several types of risk events, in order to obtain the risk control measures corresponding to each type of risk event, first, based on the several types of risk events, the probability and impact of each type of risk event are obtained, and the risk level is quantified to help decision makers understand which key risk points need to be handled first. For example, for the risk event of low pressure regulation accuracy of gas pressure regulation facilities, the probability of occurrence can be estimated by analyzing the situation of non-standard accuracy in historical data. Specifically, the number of problems with pressure regulation accuracy in the past period of time is collected and compared with the total number of pressure regulation events to calculate the risk probability of non-standard pressure regulation accuracy. At the same time, it is also necessary to consider the direct and indirect consequences that may be caused by such risks, such as economic losses (for example, user compensation due to unstable gas supply pressure), casualties (for example, accidents caused by pressure fluctuations), and environmental damage (for example, environmental pollution caused by leakage). According to the severity of these consequences, they can be quantified or graded, and then the impact is comprehensively evaluated. Then, based on the probability and impact of each type of risk event, the risk control measures corresponding to each type of risk event are obtained to ensure that each risk has a specific response plan, thereby improving the safety of the entire system. For example, based on the probability and impact of the above 7 types of risk events, the risk control measures corresponding to each of the above 7 types of risk events are obtained: the risk control measure corresponding to the risk event of too low pressure regulation accuracy is pressure regulation process performance, which is used to improve the design of the pressure regulator to improve accuracy and stability and ensure that the output pressure meets the requirements; the risk control measure corresponding to the risk event of main body failure is equipment failure defense, which is used to strengthen preventive maintenance plans and reduce the possibility of equipment failure; the risk control measure corresponding to the risk event of accidents in upstream and downstream system pipelines or equipment is system accident defense, which is used to enhance compatibility and safety with upstream and downstream systems and prevent accidents from spreading; the risk control measure corresponding to the risk event of misoperation by a third party is regulation agency protection, which is used to limit the operating rights of unauthorized personnel; the risk control measure corresponding to the risk event of long-term reduced operating reliability is safe operation cycle, which is used to conduct regular equipment inspections and performance tests to extend the service life of equipment; the risk control measure corresponding to the risk event of insufficient accident warning or emergency response capabilities is digital monitoring and supervision, which is used to warn of potential problems in advance; the risk control measure corresponding to the risk event of facing sudden disasters is sudden disaster defense, which is used to ensure the safety and availability of gas pressure regulating facilities under extreme conditions.

[0055] Step S200: Determine the safety level information corresponding to each of the risk control measures, and based on the safety level information, determine the safety level code corresponding to the current gas pressure regulating facility.

[0056] In this embodiment, first, the safety level information corresponding to each of the risk control measures is determined, and these safety level information reflects the effectiveness and reliability of the risk control measures. Then, based on the safety level information, the safety level code corresponding to the current gas pressure regulating facility is determined, and the effect of the risk control measures is quantified, providing specific standards for subsequent safety evaluation. This embodiment provides a quantitative safety index for the gas pressure regulating facility by analyzing and grading the risk control measures, thereby supporting subsequent safety evaluation work.

[0057] Specifically, the step S200 includes the following steps:

[0058] Step S201, obtaining each of the risk control measures and the safety technical characteristics and applicable scope of each of the risk control measures;

[0059] Step S202: Based on the safety technical characteristics and the applicable scope, each of the risk control measures is classified into a safety design level to obtain a safety design level corresponding to each of the risk control measures;

[0060] Step S203: obtaining safety level information corresponding to each of the risk control measures according to each of the risk control measures and the safety design level corresponding to each of the risk control measures;

[0061] Step S204: Based on the safety level information, obtain each target risk control measure corresponding to the current gas pressure regulating facility and the target safety design level corresponding to each target risk control measure;

[0062] Step S205: Arrange the target safety design level corresponding to each target risk control measure into a group of numbers according to the preset order of each target risk control measure, and obtain the safety level code corresponding to the current gas pressure regulating facility.

[0063] In one implementation, to determine the security level information corresponding to each of the risk control measures, first, obtain each of the risk control measures, as well as the security technical features and applicable scopes of each of the risk control measures. This helps to clarify the technical details of different measures and in which scenarios they are most effective, thus providing basic data for subsequent analysis. For example, obtain the risk prevention and control measure of pressure regulation process performance, as well as the security technical features and applicable scopes of the pressure regulation process performance: the voltage stabilization accuracy level > AC15, and the applicable scope corresponding to this security technical feature is the downstream operating pressure level less than the 0.01 MPa interval, or the voltage stabilization accuracy level required by the user; the voltage stabilization accuracy level is AC10, and the applicable scope corresponding to this security technical feature is the downstream operating pressure level in the 0.01 to 0.04 MPa interval or the voltage stabilization accuracy level required by the user; the voltage stabilization accuracy level is AC5, and the applicable scope corresponding to this security technical feature is the downstream operating pressure level in the 0.04 to 1.6 MPa interval or the voltage stabilization accuracy level required by the user; the voltage stabilization accuracy level < AC2.5, and the applicable scope corresponding to this security technical feature is the downstream operating pressure level greater than the 1.6 MPa interval or the voltage stabilization accuracy level required by the user.

[0064] Then, based on the security technical features and the applicable scopes, divide the security design levels of each of the risk control measures to obtain the security design levels corresponding to each of the risk control measures, quantify the actual effectiveness of each risk control measure, and ensure that the control means adopted match the risks faced. For example, based on the security technical features and applicable scopes of the above-mentioned risk control measure of pressure regulation process performance, set the voltage stabilization accuracy level of AC10 and its corresponding applicable scope as level 1, set the voltage stabilization accuracy level of AC10 and its corresponding applicable scope as level 2, set the voltage stabilization accuracy level of AC5 and its corresponding applicable scope as level 3, and set the voltage stabilization accuracy level < AC2.5 and its corresponding applicable scope as level 4. The security design level table of the pressure regulation process performance is shown in Table 1. The security design level tables of the remaining 6 risk control measures are shown in Tables 2 - 7.

[0065] Table 1 Security Design Level Table of Pressure Regulation Process Performance

[0066]

[0067] For gas pressure regulating facilities with pressure regulating process performance level 1, the pressure stabilization accuracy or shutdown pressure level is relatively low. Gas pressure regulating facilities of this level are suitable for downstream pipelines or end users who only require the gas pressure regulating facilities to operate within the basic safe pressure zone and are not sensitive to pressure stabilization accuracy. Usually, this level is selected in engineering design when the output pressure of the gas pressure regulating facilities is low pressure, or there is a gas pressure regulating device or pressure stabilizing device downstream, and the pressure regulation accuracy requirements for the gas pressure regulating facilities are not high. For example, it is used to control the gas pressure regulating devices operating at the nodes of the medium and low pressure pipeline networks of urban gas or the gas pressure regulating devices configured before the pressure stabilizers of large gas utilization end users. Gas pressure regulating facilities with pressure regulation process performance levels 2 and 3 have medium pressure stabilization accuracy or shut-off pressure levels. This level of gas pressure regulating facilities is suitable for downstream pipelines or end users who have basic pressure stabilization accuracy requirements for gas pressure regulating facilities. Generally, the gas pressure regulating facilities directly face end users, and the pressure stabilization accuracy affects the combustion conditions and energy-saving and environmental protection indicators of gas application equipment or products. For example, it is used to control the gas pressure regulating devices operating at the nodes of urban gas high and medium pressure pipeline networks, or for gas pressure regulating devices configured in front of conventional large-scale heating equipment and heat treatment equipment. Gas pressure regulating facilities with pressure regulation process performance level 4 have higher pressure stabilization accuracy or shut-off pressure level. This level of gas pressure regulating facilities is suitable for end users who have extremely high pressure stabilization accuracy requirements for gas pressure regulating facilities. Generally, such gas pressure regulating facilities are used at nodes where high-pressure urban gas pipeline networks operate, or in medium and low-pressure pipeline systems. End users whose pressure stabilization accuracy changes and fluctuations are sufficient to have a significant impact on the combustion conditions of gas application equipment, and may directly lead to product quality defects. For example, gas pressure regulating devices configured in front of precision heating or heat treatment equipment such as high-end handicraft heating furnaces and automatic welding of precision electronic components.

[0068] Table 2 Equipment failure defense safety design level table for gas pressure regulating facilities

[0069]

[0070] Gas pressure regulating facilities with equipment failure prevention safety design level 1 do not take overpressure cut-off protection measures, or only adopt overpressure relief technical measures. Gas pressure regulating facilities of this level can ensure that the downstream system will not stop gas supply, but there may be serious overpressure consequences. Gas pressure regulating facilities with equipment failure prevention safety design level 2 have selected failure cut-off gas pressure regulators, or adopted overpressure cut-off technical measures. Gas pressure regulating facilities of this level can ensure that the downstream system will not have overpressure risks, but will cause the consequence of sudden gas supply cessation. Gas pressure regulating facilities with equipment failure prevention safety design level 3 have selected technical measures for monitoring and operating series gas pressure regulators. Gas pressure regulating facilities of this level can ensure that the downstream system will not have overpressure or sudden gas outage risks, but gas outages or maintenance under accident conditions are required. Gas pressure regulating facilities with equipment failure prevention safety design level 4 have selected technical measures for monitoring and operating parallel gas pressure regulating channels. Gas pressure regulating facilities of this level can ensure that the downstream system operates under set conditions for a long time without overpressure or gas outage risks.

[0071] Table 3 System accident prevention safety design level table for gas pressure regulating facilities

[0072]

[0073] Gas pressure regulating facilities with a system accident defense safety design level of 1 do not take any safety technical measures for system accident defense. Gas pressure regulating facilities of this level cannot bear any risk of system accidents. Gas pressure regulating facilities with a system accident defense safety design level of 2 have taken technical measures of downstream pipeline underpressure cutoff or overcurrent cutoff. Gas pressure regulating facilities of this level can reduce the risk of rupture or large leakage of the downstream pipeline system and do not bear any risk of upstream pipeline system accidents. The consequence of the technical measures is complete shutdown. Gas pressure regulating facilities with a system accident defense safety design level of 3 have taken technical measures of upstream and downstream pipeline underpressure cutoff or overcurrent cutoff. Gas pressure regulating facilities of this level can reduce the risk of rupture or large leakage of the upstream and downstream pipeline systems and do not bear the risk of upstream pipeline overpressure. The consequence of the technical measures is complete shutdown. Gas pressure regulating facilities with a system accident defense safety design level of 4 have taken technical measures for early warning and emergency disposal of abnormal upstream and downstream operating conditions. Gas pressure regulating facilities of this level can timely monitor the operating conditions of the upstream and downstream pipeline systems, conduct accident early warning and emergency disposal, and the consequence of the technical measures is entering the accident operation mode.

[0074] Table 4 Safety design level table of regulating mechanism protection of gas pressure regulating facilities

[0075]

[0076] For gas pressure regulating facilities with a safety design level of 1 for regulating mechanism protection, the structure of the regulating mechanism is manually adjustable. The risk of gas pressure regulating facilities of this level is that the set working conditions allow general users to adjust them by themselves. For gas pressure regulating facilities with a safety design level of 2 for regulating mechanism protection, the structure of the regulating mechanism is adjustable with general tools. The risk of gas pressure regulating facilities of this level is that the set working conditions allow general maintenance personnel to adjust them. For gas pressure regulating facilities with a safety design level of 3 for regulating mechanism protection, the structure of the regulating mechanism is adjustable with special tools. The risk of gas pressure regulating facilities of this level is that the set working conditions allow professional maintenance personnel to adjust them. For gas pressure regulating facilities with a safety design level of 4 for regulating mechanism protection, the regulating mechanism is enclosed in a metal casing. The risk of gas pressure regulating facilities of this level is that the set working conditions do not allow on-site adjustments.

[0077] Table 5: Engineering design table of safety design level for safe operation cycle of gas pressure regulating facilities

[0078]

[0079]

[0080] Gas pressure regulating facilities with a safety design level of 1 for the safe operation cycle can only guarantee safe operation within a specified short-term time interval, and require frequent replacement of spare parts or maintenance. Gas pressure regulating facilities of this level are suitable for places where the risk of safe maintenance and overhaul is extremely low and where they are operated in places with dedicated personnel on duty. Generally speaking, gas pressure regulating facilities of this level are selected when the number of gas pressure regulating facilities is small and the maintenance cost is low. Gas pressure regulating facilities with a safety design level of 2 or 3 for the safe operation cycle can guarantee safe operation within a specified medium- and long-term time interval. Gas pressure regulating facilities of this level are suitable for places with a certain degree of safety maintenance and overhaul risk. Generally speaking, gas pressure regulating facilities of this level are selected when the number of gas pressure regulating facilities is large and the maintenance cost is high. Gas pressure regulating facilities with a safety design level of 4 for the safe operation cycle can have extremely high safety reliability and long-term safe operation quality. Gas pressure regulating facilities of this level are suitable for places that require maintenance-free and safe operation throughout the life cycle.

[0081] Table 6 Digital monitoring safety design level of gas pressure regulating facilities

[0082]

[0083] Gas pressure regulating facilities with digital monitoring safety design level 1 are only equipped with on-site direct reading instruments or on-site pressure recording storage devices. The risk of this level of gas pressure regulating facilities is that the operating conditions of the equipment can only be understood after professional patrol personnel arrive at the site. Gas pressure regulating facilities with digital monitoring safety design level 2 are equipped with instruments with data upload function, which send the operating condition data to the central dispatching system of the gas company in real time through wired or wireless transmission. The advantage of this level of gas pressure regulating facilities is that they help to grasp the operating conditions of the pipeline nodes in a timely manner and complete information management and operation scheduling plans; the risk is that the gas pressure regulating facilities cannot be remotely controlled directly. Gas pressure regulating facilities with digital monitoring safety design level 3 are equipped with data upload function and remote emergency stop function, which send the operating condition data to the central dispatching system of the gas company in real time through wired or wireless transmission; when an accident alarm is triggered, the gas pressure regulating facilities can be remotely controlled to stop operating. The advantage of this level of gas pressure regulating facilities is that while monitoring the operating conditions, the time for emergency response to sudden accidents is greatly shortened. Gas pressure regulating facilities with digital monitoring safety design level 4 are equipped with data uploading and remote control functions. This level of monitoring system can not only directly control the emergency response of accident conditions of the gas pressure regulating facilities in operation in the central dispatching room, but also adjust the normal operating conditions of the gas pressure regulating facilities according to the needs of dispatching. The advantage of this level of gas pressure regulating facilities is that it realizes remote monitoring and supervision, but its risks lie in the operational safety of the remote control actuators of the gas pressure regulating facilities themselves and the accuracy and effectiveness of data transmission.

[0084] Table 7: Safety design level table for emergency disaster prevention of gas pressure regulating facilities

[0085]

[0086] The gas pressure regulating facilities with the safety design level 1 for emergency disaster defense are the basic type of disaster defense design. Their structural features are that they are reasonably equipped with general safety measures such as electrostatic grounding and lightning protection grounding according to relevant product standards and engineering specifications. Gas pressure regulating facilities of this level are generally not equipped with maintenance structures such as boxes or buildings. The gas pressure regulating facilities with the safety design level 2 for emergency disaster defense are the primary type of disaster defense design. Their structural features are based on the level 1 design, taking into account the risk defense posed by general disasters to gas pressure regulating facilities. Gas pressure regulating facilities of this level are generally equipped with simple boxes or maintenance structures, and are made of flame-retardant plastic steel profiles or thin iron sheets. The gas pressure regulating facilities with the safety design level 3 for emergency disaster defense are the intermediate type of disaster defense design. Their structural features are based on the level 1 design, taking into account the risk defense posed by larger emergency disasters to gas pressure regulating facilities. The enclosure structure of the gas pressure regulating facilities of this level is a steel box or a brick-concrete building. The foundation of the maintenance structure generally adopts anti-settlement, flood and waterlogging disaster prevention and earthquake resistance designs. The gas pressure regulating facilities with a sudden disaster defense safety design level of 4 are enhanced types of disaster defense design. Their structural characteristics are based on the level 1 design, taking into account the risk defense posed by major sudden disasters to the gas pressure regulating facilities. The components of this level of gas pressure regulating facilities and their enclosure structures are specifically designed for various foreseeable major disasters in the installation and operation sites. This level of gas pressure regulating facilities is a technical solution based on on-site investigation and analysis of possible disaster risks in the installation and operation environment of the gas pressure regulating facilities.

[0087] Finally, according to each of the risk control measures and the safety design level corresponding to each of the risk control measures, the safety level information corresponding to each of the risk control measures is obtained, so that the evaluation results are more systematic and standardized. For example, according to the above 7 risk control measures and the safety design level table corresponding to each of the risk control measures, the safety design level table of gas pressure regulating facilities is obtained, which shows each of the risk control measures and the corresponding safety level information. The safety design level table of gas pressure regulating facilities is shown in Table 8.

[0088] Table 8 Safety design level table of gas pressure regulating facilities

[0089]

[0090]

[0091] In one implementation, in order to obtain the safety level code corresponding to the current gas pressure regulating facility. First, based on the safety level information, obtain each target risk control measure corresponding to the current gas pressure regulating facility and the target safety design level corresponding to each target risk control measure, focus on the key control points of the target risk control measures, and improve the pertinence of the assessment. For example, first obtain the safety technical characteristics of the current gas pressure regulating facility. If the safety technical characteristics of the current gas pressure regulating facility are: pressure stabilization accuracy level is AC10, overpressure relief type, no underpressure protection, tool adjustable type, maintenance cycle of 5 years, local pressure indication, primary protection; then based on the gas pressure regulating facility safety design level table 8 and safety technical characteristics, obtain each corresponding target risk control measure and the target safety design level corresponding to each target risk control measure, that is, pressure regulation process performance level 3, equipment failure defense level 2, system accident defense level 2, regulation mechanism protection level 1, safe operation cycle level 3, digital monitoring level 4, sudden disaster defense level 1.

[0092] Then, according to the preset order of each target risk control measure, the target safety design level corresponding to each target risk control measure is arranged into a group of numbers to obtain the safety level code corresponding to the current gas pressure regulating facility, which is not only convenient for quickly identifying the overall safety status of the gas pressure regulating facility, but also provides a unified standard for comparing the safety of different gas pressure regulating facilities. For example, the arrangement order of the risk control measures in the gas pressure regulating facility safety design level table 8 is set to the preset order of each target risk control measure, and the target safety design level corresponding to each target risk control measure is arranged into a group of numbers, which is 3221341. In order to avoid confusion with other identifications such as product models, the AQ prefix can be added before the 7-digit number, which stands for "safety", that is, the safety level code corresponding to the current gas pressure regulating facility is AQ3221341. The entire process of this embodiment not only ensures the professionalism of the evaluation, but also improves management efficiency.

[0093] Step S300: Perform a safety assessment on the current gas pressure regulating facility based on the safety level code.

[0094] In this embodiment, after obtaining the safety level code, the current gas pressure regulating facility can be evaluated for safety based on the safety level code. This embodiment performs safety evaluation based on the safety level code, providing a clear and quantitative indicator to reflect the overall safety of the gas pressure regulating facility. This not only helps to clearly identify the safety status and risk level of the gas pressure regulating facility, but also provides a scientific basis for decision makers to take corresponding improvement measures, thereby effectively improving the safety and reliability of the entire system.

[0095] Specifically, step S300 includes the following steps:

[0096] Step S301, obtaining security technical features based on the security level code;

[0097] Step S302: Based on the safety technical features, a safety evaluation is performed on the current gas pressure regulating facility.

[0098] In one implementation, when the safety level code of the current gas pressure regulating facility is known, firstly, the safety technical features corresponding to the safety level code of the current gas pressure regulating facility are obtained according to the safety level information, so as to provide a basis for the subsequent safety evaluation. Then, based on the safety technical features, a safety evaluation is conducted on the current gas pressure regulating facility to ensure that the current gas pressure regulating facility can operate safely and stably under the expected conditions, and to promptly discover and resolve potential safety hazards. For example, if the safety level code of the current gas pressure regulating facility is known to be AQ3221341, then based on the gas pressure regulating facility safety design level table 8, the safety technical features of the current gas pressure regulating facility can be obtained as follows: the pressure stabilization accuracy level is AC10, overpressure relief type, no underpressure protection, tool adjustable type, maintenance cycle of 5 years, on-site monitoring instrument indication, and primary protection. Next, based on these safety technical features, a comprehensive safety evaluation is conducted on the current gas pressure regulating facility. Specifically, in terms of pressure stabilization performance, it is necessary to check whether the gas pressure regulating facility can continuously maintain the stability of the output pressure to ensure that it meets the requirements of the AC10 level; for the design of overpressure relief type, evaluate the effectiveness of its relief mechanism to ensure that the pressure can be released in time under overpressure to avoid the occurrence of safety accidents; given that the gas pressure regulating facility is not equipped with underpressure protection function, special attention should be paid to monitoring the intake pressure to prevent gas supply interruption caused by insufficient pressure; at the same time, as a tool-adjustable pressure regulator, this requires operators to receive appropriate training to ensure that the pressure setting can be adjusted correctly; the maintenance cycle is 5 years. In order to ensure the long-term reliability of the gas pressure regulating facility, regular inspections and maintenance must be performed at the prescribed 5-year intervals; in addition, the on-site monitoring instrument indication should be clear and accurate so that the operator can understand the working status of the facility; finally, since the gas pressure regulating facility only has a primary protection level, it is necessary to add additional external protection measures to further improve the safety of the entire system. Through the above analysis and evaluation, a detailed safety evaluation report can be formed, and corresponding improvement measures or maintenance plans can be formulated accordingly to ensure that the gas pressure regulating facility can operate safely and reliably.

[0099] In one implementation, the safety evaluation of the current gas pressure regulating facility based on the safety level code further includes: selecting equipment for the current gas pressure regulating facility based on the safety technical features. For example, the safety technical features are pressure stabilization accuracy level AC10, overpressure relief type, no underpressure protection, tool adjustable type, maintenance cycle of 5 years, on-site monitoring instrument indication, and primary protection. Based on these technical features, first of all, it is necessary to ensure that the newly selected equipment also has the AC10 level of voltage regulation accuracy to meet the voltage regulation performance requirements; secondly, considering the design characteristics of overpressure relief, a voltage regulator with an efficient relief mechanism should be selected to enhance the overpressure protection capability; in view of the lack of undervoltage protection, new equipment with built-in undervoltage alarm or automatic cut-off function can be selected to make up for this defect; for the tool-adjustable characteristics, a voltage regulator that is easy to operate and provides a detailed user manual should be selected to ensure that the operator can accurately adjust; considering the 5-year maintenance cycle, the durability and maintainability of the equipment should be considered when selecting, so as to reduce maintenance costs and improve system availability; in addition, for the requirements of on-site monitoring instrument indications, the newly selected pressure regulating facilities should be equipped with intuitive and easy-to-read pressure gauges and other necessary instruments to facilitate operators to monitor the operating status and detect abnormal conditions in time; finally, given that the protection level of the original gas pressure regulating facilities is relatively low, when selecting new ones, it is necessary to focus on pressure regulators with higher protection levels, and appropriately add additional protection measures such as explosion protection and corrosion protection in combination with external environmental conditions. Through the above selection process, not only can the new equipment meet the safety and technical requirements of existing gas pressure regulating facilities, but the safety and reliability of the overall system can also be further improved.

[0100] In summary, this embodiment first obtains several types of risk events corresponding to the gas pressure regulating facilities to ensure the comprehensiveness and pertinence of the assessment and avoid missing any potential safety hazards; and obtains the risk control measures corresponding to each type of risk event, strengthens the understanding of risk events, and ensures the professionalism and effectiveness of the response measures. Then, the safety level information corresponding to each of the risk control measures is determined, and based on the safety level information, the safety level code corresponding to the current gas pressure regulating facility is determined, providing an important quantitative basis for subsequent safety assessments. Finally, the current gas pressure regulating facility is safety evaluated based on the safety level code, so that decision makers can quickly understand the safety status of the current gas pressure regulating facility and take corresponding measures. The present invention provides a more scientific and accurate safety management method for gas pressure regulating facilities in urban gas infrastructure through systematic risk identification, quantitative safety level division and clear safety evaluation results, which helps to reduce the probability of safety accidents, improve the operating efficiency of gas pressure regulating facilities, and effectively control investment costs.

[0101] like Figure 2As shown in , this embodiment also provides a safety assessment system for gas pressure regulating facilities, which includes: a risk control measure acquisition module 10, a safety level code determination module 20 and a safety evaluation module 30. Specifically, the risk control measure acquisition module 10 is used to obtain several types of risk events corresponding to the gas pressure regulating facilities and the risk control measures corresponding to each type of risk event. The safety level code determination module 20 is used to determine the safety level information corresponding to each of the risk control measures, and based on the safety level information, determine the safety level code corresponding to the gas pressure regulating facility. The safety evaluation module 30 is used to perform a safety evaluation on the gas pressure regulating facility based on the safety level code.

[0102] In one implementation, the risk control measure acquisition module 10 includes:

[0103] An operation data acquisition unit, used to acquire the operation data of the gas pressure regulating facility;

[0104] A risk event acquisition unit, configured to acquire risk events of the gas pressure regulating facility based on the operation data;

[0105] The several types of risk event acquisition unit is used to classify the risk events of the gas pressure regulating facility according to the sources of the risk events to obtain several types of risk events.

[0106] A probability and impact degree acquisition unit, used to acquire the probability and impact degree of each type of risk event based on the several types of risk events;

[0107] The risk control measure acquisition unit is used to acquire the risk control measures corresponding to each type of risk event based on the probability of occurrence and impact degree of each type of risk event.

[0108] In one implementation, the security level code determination module 20 includes:

[0109] A safety technical feature and applicable scope acquisition unit, used to acquire each of the risk control measures and the safety technical feature and applicable scope of each of the risk control measures;

[0110] A safety design level acquisition unit, configured to classify each of the risk control measures into safety design levels based on the safety technical characteristics and the applicable scope, and obtain a safety design level corresponding to each of the risk control measures;

[0111] A safety level information acquisition unit, configured to obtain the safety level information corresponding to each of the risk control measures according to each of the risk control measures and the safety design level corresponding to each of the risk control measures;

[0112] A target safety design level acquisition unit, used to acquire each target risk control measure corresponding to the current gas pressure regulating facility and the target safety design level corresponding to each target risk control measure based on the safety level information;

[0113] The safety level code acquisition unit is used to arrange the target safety design level corresponding to each target risk control measure into a group of numbers according to the preset order of each target risk control measure, so as to obtain the safety level code corresponding to the current gas pressure regulating facility.

[0114] In one implementation, the safety assessment module 30 includes:

[0115] A security technical feature acquisition unit, used to acquire security technical features based on the security level code;

[0116] A safety evaluation unit is used to perform a safety evaluation on the current gas pressure regulating facility based on the safety technical features.

[0117] In one implementation, the system further includes an equipment selection module for selecting equipment for the current gas pressure regulating facility based on the safety technical features.

[0118] The working principles of each module in the safety assessment system of the gas pressure regulating facility of this embodiment are the same as the principles of each step in the above method embodiment, and will not be repeated here.

[0119] Based on the above embodiment, the present invention further provides a terminal, the principle block diagram of the terminal can be as follows: Figure 3 The terminal may include one or more processors 100 ( Figure 3 Only one is shown in the figure), a memory 101 and a computer program 102 stored in the memory 101 and executable on one or more processors 100, for example, a safety assessment program for a gas pressure regulating facility. When one or more processors 100 execute the computer program 102, each step in the embodiment of the method for safety assessment of a gas pressure regulating facility can be implemented. Alternatively, when one or more processors 100 execute the computer program 102, the functions of each module / unit in the embodiment of the method for safety assessment of a gas pressure regulating facility can be implemented, which is not limited here.

[0120] In one embodiment, the processor 100 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0121] In one embodiment, the memory 101 may be an internal storage unit of an electronic device, such as a hard disk or memory of the electronic device. The memory 101 may also be an external storage device of the electronic device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device. Further, the memory 101 may also include both an internal storage unit of the electronic device and an external storage device. The memory 101 is used to store computer programs and other programs and data required by the terminal. The memory 101 may also be used to temporarily store data that has been output or is to be output.

[0122] Those skilled in the art will understand that Figure 3 The principle block diagram shown in the figure is only a block diagram of a partial structure related to the scheme of the present invention, and does not constitute a limitation on the terminal to which the scheme of the present invention is applied. The specific terminal may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0123] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, operating database or other media used in the embodiments provided by the present invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double operational data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0124] 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for safety assessment of a gas pressure regulating facility, characterized in that: The method comprises: Obtain several types of risk events corresponding to gas pressure regulating facilities and obtain the risk control measures corresponding to each type of risk event; Determine the safety level information corresponding to each of the risk control measures, and determine the safety level code corresponding to the current gas pressure regulating facility based on the safety level information; A safety evaluation is performed on the current gas pressure regulating facility based on the safety level code.

2. The method for safety assessment of gas pressure regulating facilities according to claim 1, characterized in that: The several types of risk events corresponding to the gas pressure regulating facilities are obtained, including: Obtaining operation data of the gas pressure regulating facility; Based on the operation data, obtaining risk events of the gas pressure regulating facility; According to the sources of the risk events, the risk events of the gas pressure regulating facilities are classified to obtain several types of risk events.

3. The method for safety assessment of gas pressure regulating facilities according to claim 2, characterized in that: The risk control measures corresponding to each type of risk event are obtained, including: Based on the several types of risk events, obtain the probability and impact of each type of risk event; Based on the probability and impact of each type of risk event, the risk control measures corresponding to each type of risk event are obtained.

4. The method for safety assessment of gas pressure regulating facilities according to claim 3, characterized in that: The step of determining the security level information corresponding to each of the risk control measures includes: Obtain each of the risk control measures and the safety technical characteristics and applicable scope of each of the risk control measures; Based on the safety technical characteristics and the applicable scope, each of the risk control measures is divided into safety design levels to obtain a safety design level corresponding to each of the risk control measures; According to each of the risk control measures and the safety design level corresponding to each of the risk control measures, safety level information corresponding to each of the risk control measures is obtained.

5. The method for safety assessment of gas pressure regulating facilities according to claim 4, characterized in that: The step of determining the safety level code corresponding to the current gas pressure regulating facility based on the safety level information includes: Based on the safety level information, obtaining each target risk control measure corresponding to the current gas pressure regulating facility and the target safety design level corresponding to each target risk control measure; According to the preset order of each target risk control measure, the target safety design level corresponding to each target risk control measure is arranged into a group of numbers to obtain the safety level code corresponding to the current gas pressure regulating facility.

6. The method for safety assessment of gas pressure regulating facilities according to claim 1, characterized in that: The safety evaluation of the current gas pressure regulating facility based on the safety level code includes: Based on the security level code, obtaining security technical features; Based on the safety technical characteristics, a safety evaluation of the current gas pressure regulating facilities is performed.

7. The method for safety assessment of gas pressure regulating facilities according to claim 6, characterized in that: The safety evaluation of the current gas pressure regulating facility based on the safety level code further includes: The equipment type of the current gas pressure regulating facility is selected based on the safety technical features.

8. A safety assessment system for a gas pressure regulating facility, characterized in that: The system comprises: The risk control measures acquisition module is used to obtain several types of risk events corresponding to the gas pressure regulating facilities and the risk control measures corresponding to each type of risk event; A safety level code determination module, used to determine the safety level information corresponding to each of the risk control measures, and based on the safety level information, determine the safety level code corresponding to the gas pressure regulating facility; A safety evaluation module is used to perform a safety evaluation on the gas pressure regulating facility based on the safety level code.

9. A terminal, characterized in that: The terminal includes a memory, a processor, and a safety assessment program for gas pressure regulating facilities stored in the memory and executable on the processor. When the processor executes the safety assessment program for the gas pressure regulating facility, the steps of the safety assessment method for the gas pressure regulating facility as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a safety assessment program for a gas pressure regulating facility. When the safety assessment program for a gas pressure regulating facility is executed by a processor, the steps of the safety assessment method for a gas pressure regulating facility as described in any one of claims 1 to 7 are implemented.

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