A long-distance pipeline venting system, method, and storage medium

Abstract

The application provides a long pipeline emptying system, method and storage medium, and belongs to the pipeline safety field.The system comprises a controller, a throttle valve group and a plurality of temperature sensors.The controller is used for importing an emergency control instruction and sending the emergency control instruction to the throttle valve group.The throttle valve group is used for opening a valve according to the emergency control instruction, and generating a throttle valve opening instruction and sending the throttle valve opening instruction to the controller when the valve opening is completed.The controller is further used for generating a temperature obtaining instruction according to the throttle valve opening instruction and sending the temperature obtaining instruction to each temperature sensor.The temperature sensor is used for sending generated temperature data to the controller according to the temperature obtaining instruction.The application can realize automatic adjustment of the pipeline emptying process, thereby preventing the pipeline and the medium in the pipeline from being at a low temperature, effectively reducing the risk of pipeline emptying, and realizing safe emptying of the CO2 long pipeline.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of pipeline safety, and particularly relates to a long-distance pipeline venting system, method and storage medium. BACKGROUND

[0002] CO2 capture, utilization and storage technology (CCUS) is an effective means to achieve global CO2 emission reduction and reduce the greenhouse effect. In the CCUS technology industry chain, pipeline is the most important way to transport CO2 from the capture source to the utilization and storage site. With the wide application of CCUS technology, CO2 long-distance pipelines will be constructed and applied in large quantities in the future.

[0003] In order to facilitate the safety management and operation of the pipeline, CO2 long-distance pipeline will be provided with equipment and facilities capable of venting at every certain length. The purpose is to cut off the connection between the pipe section at the location and the entire long-distance pipeline in emergency when an unexpected risk occurs at the location, and to vent the CO2 medium in the pipe section.

[0004] Due to the Joule-Thomson effect, CO2 will have a significant temperature drop during the decompression venting process, resulting in a low temperature of the medium in the pipe and the pipeline, and the local temperature can even be reduced to about -70℃. At this temperature, the pipe wall will be below the ductile-brittle transition temperature, and the leakage site is prone to long-range brittle fracture; pipe fittings, valves and the like are prone to freezing and lose their original functions. Therefore, the low temperature generated during the venting process of the CO2 long-distance pipeline poses a new threat to the safety of the entire long-distance pipeline. SUMMARY

[0005] The present application mainly relates to the technical field of pipeline safety, and particularly relates to a long-distance pipeline venting system, method and storage medium.

[0006] The technical scheme for solving the above technical problems is as follows: a long-distance pipeline venting system, comprising: a controller, a throttle valve group and a plurality of temperature sensors,

[0007] The controller is used for importing an emergency control instruction and sending the emergency control instruction to the throttle valve group;

[0008] The throttle valve group is used for opening a valve according to the emergency control instruction, and generating a throttle valve opening instruction and sending the throttle valve opening instruction to the controller when the valve opening is completed;

[0009] The controller is also used for generating a temperature obtaining instruction according to the throttle valve opening instruction and sending the temperature obtaining instruction to each temperature sensor;

[0010] Each of the temperature sensors is configured to send generated temperature data to the controller according to the temperature obtaining instruction;

[0011] The controller is further configured to analyze valve opening degree of all the temperature data to obtain throttle valve group opening degree data, and send the throttle valve group opening degree data to the throttle valve group;

[0012] The throttle valve group is further configured to adjust valve opening degree according to the throttle valve group opening degree data.

[0013] Another technical solution of the present application to solve the above technical problems is as follows: a long-distance pipeline emptying method, comprising the following steps:

[0014] Importing an emergency control instruction and sending the emergency control instruction to the throttle valve group;

[0015] Opening the valve according to the emergency control instruction, and when the valve opening is completed, generating a throttle valve opening instruction and sending the throttle valve opening instruction to the controller;

[0016] Generating a temperature obtaining instruction according to the throttle valve opening instruction, and sending the temperature obtaining instruction to each temperature sensor respectively;

[0017] Sending generated temperature data to the controller according to the temperature obtaining instruction;

[0018] Analyzing valve opening degree of all the temperature data to obtain throttle valve group opening degree data, and sending the throttle valve group opening degree data to the throttle valve group;

[0019] Adjusting valve opening degree according to the throttle valve group opening degree data.

[0020] The present application has the beneficial effects that: the valve is opened by the emergency control instruction, and when the valve opening is completed, the throttle valve opening instruction is generated, the temperature obtaining instruction is generated according to the throttle valve opening instruction, the temperature data generated is sent to the controller according to the temperature obtaining instruction, the throttle valve group opening degree data is obtained by analyzing the valve opening degree of the temperature data, and the valve opening degree is adjusted according to the throttle valve group opening degree data, so that the automatic adjustment of the pipeline emptying process can be realized, thereby preventing the pipeline and the medium in the pipeline from being at a low temperature, effectively reducing the risk of pipeline emptying, and realizing the safe emptying of the CO2 long-distance pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 One of the module block diagrams of the long-distance pipeline emptying system provided by an embodiment of the present application;

[0022] Figure 2 The second module block diagram of the long-distance pipeline emptying system provided by an embodiment of the present application;

[0023] Figure 3 A structural diagram of a long-distance pipeline venting system according to an embodiment of the present application is provided.

[0024] Figure 4 A flowchart of a long-distance pipeline venting system according to an embodiment of the present application is provided.

[0025] Figure 5 A flowchart of a long-distance pipeline venting method according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0026] The principles and features of the present application are described below in conjunction with the accompanying drawings, in which the examples are used to explain the present application, but not to limit the scope of the present application.

[0027] Figure 1 A module block diagram of a long-distance pipeline venting system according to an embodiment of the present application is provided.

[0028] As shown in Figures 1 to 3 a long-distance pipeline venting system, comprising: a controller, a throttle valve group, and a plurality of temperature sensors,

[0029] The controller is configured to import an emergency control instruction and send the emergency control instruction to the throttle valve group.

[0030] The throttle valve group is configured to open a valve according to the emergency control instruction, and when the valve opening is completed, generate a throttle valve opening instruction and send the throttle valve opening instruction to the controller.

[0031] The controller is further configured to generate a temperature obtaining instruction according to the throttle valve opening instruction and send the temperature obtaining instruction to each temperature sensor.

[0032] Each temperature sensor is configured to send generated temperature data to the controller according to the temperature obtaining instruction.

[0033] The controller is further configured to analyze the valve opening degree of all temperature data to obtain throttle valve group opening degree data and send the throttle valve group opening degree data to the throttle valve group.

[0034] The throttle valve group is further configured to adjust the valve opening degree according to the throttle valve group opening degree data.

[0035] It should be understood that the emergency control instruction is imported when a leakage point or other position point requiring emergency treatment appears in the pipeline to be processed.

[0036] It should be understood that the temperature sensor can be arranged at the position where the venting pipe is connected with the CO2 transportation pipeline, i.e., the position where the throttle valve group is connected with the pipeline to be treated, so as to monitor the temperature of the medium in the CO2 transportation pipeline, i.e., the pipeline to be treated, during the venting process.

[0037] Specifically, the operator in the control room remotely opens the first electrically-controlled throttle valve (8) and the second electrically-controlled throttle valve (9), i.e., the throttle valve group, by the operating system on the controller (1) through the throttle valve control cable (6), so as to start the venting of CO2 in the CO2 transportation pipeline (5), i.e., the pipeline to be treated.

[0038] In the above embodiment, the valve is opened by the emergency control instruction, the throttle valve opening instruction is generated when the opening of the valve is completed, the temperature obtaining instruction is generated according to the throttle valve opening instruction, the generated temperature data is sent to the controller according to the temperature obtaining instruction, the valve opening degree data of the throttle valve group is obtained by analyzing the temperature data, and the valve opening degree is adjusted according to the valve opening degree data of the throttle valve group, so as to realize the automatic adjustment of the pipeline venting process, thereby preventing the pipeline and the medium in the pipeline from being at a low temperature, effectively reducing the risk of pipeline venting, and realizing the safe venting of the CO2 long-distance pipeline.

[0039] Optionally, as an embodiment of the present application, the throttle valve group comprises a first throttle valve and a second throttle valve,

[0040] One end of the first throttle valve is connected with the second throttle valve through a pipeline, the other end of the first throttle valve is connected with the pipeline to be treated, a plurality of temperature sensors are arranged on the side wall of the pipeline to be treated, and the controller is connected with the first throttle valve, the second throttle valve and the plurality of temperature sensors through cables.

[0041] It should be understood that the first remote electrically-controlled throttle valve (i.e., the first throttle valve) and the second remote electrically-controlled throttle valve (i.e., the second throttle valve) are both electrically-controlled throttle valves, and the opening degree of the valve can be adjusted by remote electric control.

[0042] Specifically, the controller is a hardware system for monitoring the operation of the high-pressure CO2 transportation pipeline (i.e., the pipeline to be treated), and a monitoring software is installed on the controller, which is arranged in a specially set control room.

[0043] It should be understood that the first remote electrically-controlled throttle valve (i.e., the first throttle valve), the second remote electrically-controlled throttle valve (i.e., the second throttle valve) and the pipeline connected therebetween constitute the basic structure for venting the CO2 transportation pipeline (i.e., the pipeline to be treated).

[0044] In the above embodiment, the controller, the first throttle valve, the second throttle valve and the temperature sensor can realize the automatic adjustment of the pipeline venting process, thereby preventing the pipeline and the medium in the pipeline from being at a low temperature, effectively reducing the risk of pipeline venting.

[0045] Optionally, as one embodiment of the present application, as shown in the figure, the process of valve opening degree analysis on all the temperature data to obtain the throttle valve group opening degree data in the controller includes: Figures 1 to 4

[0046] When any one of all the temperature data is less than the preset low temperature risk threshold, then all the temperature data is calculated by a preset opening degree curve formula to obtain the first throttle valve opening degree data and the second throttle valve opening degree data, and the first throttle valve opening degree data and the second throttle valve opening degree data are combined into the throttle valve group opening degree data.

[0047] It should be understood that the preset opening degree curve formula can be T=f(V01, V02), wherein T is the temperature data, V01 is the first throttle valve opening degree data, and V02 is the second throttle valve opening degree data.

[0048] Specifically, the controller, the first remote control throttle valve (i.e. the first throttle valve), the second remote control throttle valve (i.e. the second throttle valve), the temperature sensor, the temperature signal collection cable (i.e. the cable connected between the controller and the temperature sensor), the throttle valve control cable (i.e. the cable connected between the controller and the first throttle valve and the cable connected between the controller and the second throttle valve) constitute a typical control loop of signal measurement-signal processing-actuator execution.

[0049] It should be understood that the controller internally sets the curve relationship T=f(V01, V02) between the CO2 transportation pipeline medium temperature T (i.e. the temperature data) and the first throttle valve opening degree VO1 (i.e. the first throttle valve opening degree data) and the second throttle valve opening degree VO2 (i.e. the second throttle valve opening degree data). With the decrease of the medium temperature T (i.e. the temperature data), the throttle valve opening degree gradually decreases.

[0050] Specifically, the controller internally sets the low temperature risk threshold Tc (i.e. the preset low temperature risk threshold) of the CO2 transportation pipeline medium temperature T (i.e. the temperature data). When the CO2 pipeline medium temperature T (i.e. the temperature data) is lower than Tc (i.e. the preset low temperature risk threshold) during the emptying process, the controller automatically reduces the valve opening degree according to the curve relationship T=f(V01, V02), so that the medium temperature is always higher than the low temperature risk threshold Tc.

[0051] ​Specifically, the operating system on the controller (1) continuously receives the temperature signal T (i.e. temperature data) measured by the temperature sensor (10) in the transport pipeline (5) (i.e. the pipeline to be processed) through the temperature signal acquisition cable (11) (i.e. the cable connecting the controller and the temperature sensor), and compares it with the set temperature risk threshold Tc (i.e. the preset low temperature risk threshold). When the temperature T (i.e. temperature data) is higher than Tc (i.e. the preset low temperature risk threshold), the throttle valve opening is kept unchanged. When the controller (1) monitors that the temperature T (i.e. temperature data) in the transport pipeline is lower than the temperature risk threshold Tc (i.e. the preset low temperature risk threshold), the controller (1) automatically adjusts the throttle valve (8) (i.e. the first throttle valve) and the throttle valve (9) (i.e. the second throttle valve) to the set opening according to the internally set temperature and valve opening curve T = f(V01, V02) through the throttle valve control cable (6) (i.e. the cable connecting the controller and the first throttle valve and the cable connecting the controller and the second throttle valve), thereby increasing the temperature drop in the transport pipeline (5) (i.e. the pipeline to be processed) by reducing the opening to prevent the medium from being too low in temperature.

[0052] In the above embodiment, the valve opening analysis is performed on all temperature data to obtain the throttle valve group opening data, thereby increasing the temperature drop in the pipeline, preventing the medium from being too low in temperature, and achieving automatic adjustment of the pipeline emptying process, effectively reducing the risk of pipeline emptying, and realizing safe emptying of the CO2 long-distance pipeline.

[0053] Optionally, as an embodiment of the present application, the long-distance pipeline emptying system further comprises a first stop valve and a second stop valve,

[0054] The first stop valve and the second stop valve are respectively arranged at two ends of the pipeline to be processed and are connected to the controller through cables;

[0055] The controller is configured to generate a first stop valve closing instruction and a second stop valve closing instruction according to the emergency control instruction, and send the first stop valve closing instruction to the first stop valve and the second stop valve closing instruction to the second stop valve;

[0056] The first stop valve is configured to close the valve according to the first stop valve closing instruction;

[0057] The second stop valve is configured to close the valve according to the second stop valve closing instruction.

[0058] It should be understood that the temperature sensor can also be arranged near the remote electrically controlled stop valve (i.e. the first stop valve or the second stop valve).

[0059] Specifically, when a leakage point or other position point requiring emergency treatment occurs in the pipeline, the controller remotely closes the stop valves (i.e., the first stop valve and the second stop valve) through the control cable, limits the pipeline section between the two stop valves to the pipeline section (i.e., the pipeline to be treated) requiring CO2 emptying.

[0060] Specifically, when a leakage point or other position point requiring emergency treatment occurs in the CO2 long-distance pipeline, the operator in the control room remotely operates the two electrically-controlled stop valves (3) and (4) (i.e., the first stop valve and the second stop valve) adjacent to the leakage point through the operation system on the controller (1) and the stop valve control cable (2), and limits the emptying medium in the pipeline (5) (i.e., the pipeline to be treated).

[0061] In the above embodiment, the first stop valve and the second stop valve can limit the emptying medium in the pipeline section between the two stop valves, facilitate emptying treatment, effectively reduce the risk of pipeline emptying, and realize safe emptying of the CO2 long-distance pipeline.

[0062] Optionally, as an embodiment of the present application, in the throttle valve group, the process of adjusting the valve opening degree according to the throttle valve group opening degree data includes:

[0063] The first throttle valve is configured to adjust the valve opening degree according to the first throttle valve opening degree data.

[0064] The second throttle valve is configured to adjust the valve opening degree according to the second throttle valve opening degree data.

[0065] In the above embodiment, the valve opening degree is adjusted according to the throttle valve group opening degree data, which effectively reduces the risk of pipeline emptying and realizes safe emptying of the CO2 long-distance pipeline.

[0066] Optionally, as another embodiment of the present application, the present application can realize automatic adjustment of the pipeline emptying process, thereby preventing the pipeline and the medium in the pipeline from being at a low temperature and effectively reducing the risk of pipeline emptying.

[0067] Optionally, as another embodiment of the present application, the present application includes a controller, a stop valve control cable, a remote electrically-controlled stop valve, a high-pressure CO2 pipeline, a throttle valve control cable, an emptying pipeline, a first remote electrically-controlled throttle valve, a second remote electrically-controlled throttle valve, a multi-point temperature sensor, and a temperature signal acquisition cable.

[0068] Optionally, as another embodiment of the present application, the present application includes the following steps:

[0069] When a leakage point occurs in the CO2 long-distance pipeline or other unexpected situations need to be handled urgently, the operator in the control room remotely operates the two electrically-controlled stop valves (3) and (4) near the leakage point through the operation system on the controller (1) via the stop valve control cable (2) to close the two valves and limit the evacuation of the medium in the pipeline (5). Then, the operator in the control room remotely opens the first electrically-controlled throttle valve (8) and the second electrically-controlled throttle valve (9) through the operation system on the controller (1) via the throttle valve control cable (6) to start evacuating the CO2 in the pipeline (5). In this process, the operation system on the controller (1) continuously receives the temperature signal T measured by the temperature sensor (10) in the pipeline (5) via the temperature signal acquisition cable (11) and compares the temperature signal T with the set temperature risk threshold Tc. When the temperature T is higher than Tc, the opening degree of the throttle valve is kept unchanged. When the controller (1) monitors that the temperature T in the pipeline is lower than the temperature risk threshold Tc, the controller (1) automatically adjusts the opening degrees of the throttle valve (8) and the throttle valve (9) to the set opening degrees according to the internally set temperature and valve opening degree curve T = f(V01, V02) via the throttle valve control cable (6) to increase the temperature drop in the pipeline (5) by reducing the opening degree, so as to prevent the medium from being too low in temperature, thereby realizing the safe evacuation of the CO2 long-distance pipeline.

[0070] Figure 5 The flowchart of the long-distance pipeline evacuation method provided by an embodiment of the application is shown.

[0071] Optionally, as another embodiment of the application, as shown in Figure 5 a long-distance pipeline evacuation method includes the following steps:

[0072] Importing an emergency control instruction and sending the emergency control instruction to a throttle valve group;

[0073] Opening a valve according to the emergency control instruction, and when the valve opening is completed, generating a throttle valve opening instruction and sending the throttle valve opening instruction to a controller;

[0074] Generating a temperature obtaining instruction according to the throttle valve opening instruction and sending the temperature obtaining instruction to each temperature sensor;

[0075] Sending generated temperature data to the controller according to the temperature obtaining instruction;

[0076] Analyzing valve opening degrees based on all the temperature data, obtaining throttle valve group opening degree data, and sending the throttle valve group opening degree data to the throttle valve group;

[0077] Adjusting the valve opening degree according to the throttle valve group opening degree data.

[0078] Optionally, as one embodiment of the present application, the process of performing valve opening degree analysis on all the temperature data to obtain throttle valve group opening degree data comprises:

[0079] When any one of all the temperature data is less than a preset low temperature risk threshold, then the first throttle valve opening degree data and the second throttle valve opening degree data are calculated by a preset opening degree curve formula, and the first throttle valve opening degree data and the second throttle valve opening degree data are combined into throttle valve group opening degree data.

[0080] Optionally, as one embodiment of the present application, it further comprises:

[0081] generating a first stop valve closing instruction and a second stop valve closing instruction according to the emergency control instruction, and sending the first stop valve closing instruction to the first stop valve and the second stop valve closing instruction to the second stop valve;

[0082] closing the valve according to the first stop valve closing instruction;

[0083] closing the valve according to the second stop valve closing instruction.

[0084] Optionally, another embodiment of the present application provides a long-distance pipeline venting system, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the long-distance pipeline venting method as described above is realized. The system can be a computer or the like.

[0085] Optionally, another embodiment of the present application provides a computer readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the long-distance pipeline venting method as described above is realized.

[0086] It should be noted that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0087] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0088] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. For example, the division of the apparatus embodiments is merely illustrative, and the units can be combined or integrated into another system, or some features can be ignored or not executed. In a possible implementation, multiple units can be combined or integrated into another system, or some features can be ignored or not executed.

[0089] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they can be located in one place, or distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0090] In addition, the functional units in each embodiment of the present application can be integrated into a processing unit, or each unit can be physically present separately, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0091] If the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. For such understanding, the technical solutions of the present application essentially or say the part of the prior art that contributes to the present application, or all or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0092] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A long distance pipeline blowdown system characterized by, The system comprises: a controller, a throttle valve group, and a plurality of temperature sensors, the controller is configured to import an emergency control instruction and send the emergency control instruction to the throttle valve group; the throttle valve group is configured to open a valve according to the emergency control instruction, and when the valve opening is completed, generate a throttle valve opening instruction and send the throttle valve opening instruction to the controller; the controller is further configured to generate a temperature acquisition instruction according to the throttle valve opening instruction and send the temperature acquisition instruction to each of the temperature sensors; each of the temperature sensors is configured to send generated temperature data to the controller according to the temperature acquisition instruction; the controller is further configured to analyze the valve opening degree of all the temperature data to obtain throttle valve group opening degree data and send the throttle valve group opening degree data to the throttle valve group; the throttle valve group is further configured to adjust the valve opening degree according to the throttle valve group opening degree data; the throttle valve group comprises a first throttle valve and a second throttle valve, one end of the first throttle valve is connected to the second throttle valve through a pipeline, the other end of the first throttle valve is connected to a pipeline to be processed, a plurality of temperature sensors are arranged on the side wall of the pipeline to be processed, and the controller is connected to the first throttle valve, the second throttle valve, and the plurality of temperature sensors through cables respectively; in the controller, the process of analyzing the valve opening degree of all the temperature data to obtain throttle valve group opening degree data comprises: when any one of all the temperature data is less than a preset low-temperature risk threshold, a preset opening degree curve formula is used to calculate all the temperature data to obtain first throttle valve opening degree data and second throttle valve opening degree data, the first throttle valve opening degree data and the second throttle valve opening degree data are combined into throttle valve group opening degree data, and the preset opening degree curve formula is T=f(V01, V02), wherein T is temperature data, V01 is first throttle valve opening degree data, and V02 is second throttle valve opening degree data; in the throttle valve group, the process of adjusting the valve opening degree according to the throttle valve group opening degree data comprises: the first throttle valve is configured to adjust the valve opening degree according to the first throttle valve opening degree data; the second throttle valve is configured to adjust the valve opening degree according to the second throttle valve opening degree data.

2. The long convey pipe blowoff system according to claim 1, wherein The long-distance pipeline venting system further comprises a first stop valve and a second stop valve, the first stop valve and the second stop valve are arranged at both ends of the pipeline to be processed and are connected to the controller through cables respectively; the controller is configured to generate a first stop valve closing instruction and a second stop valve closing instruction according to the emergency control instruction, send the first stop valve closing instruction to the first stop valve, and send the second stop valve closing instruction to the second stop valve; the first stop valve is configured to close the valve according to the first stop valve closing instruction; the second stop valve is configured to close the valve according to the second stop valve closing instruction.

3. A method of venting a long pipeline, characterized by, The method comprises the following steps: importing an emergency control instruction and sending the emergency control instruction to a throttle valve group; opening the valve according to the emergency control instruction, and generating a throttle valve opening instruction and sending the throttle valve opening instruction to the controller when the opening of the valve is completed; generating a temperature acquisition instruction according to the throttle valve opening instruction and sending the temperature acquisition instruction to each temperature sensor respectively; sending the generated temperature data to the controller according to the temperature acquisition instruction; performing valve opening degree analysis on all the temperature data to obtain throttle valve group opening degree data and sending the throttle valve group opening degree data to the throttle valve group; adjusting the valve opening degree according to the throttle valve group opening degree data; the process of performing valve opening degree analysis on all the temperature data to obtain throttle valve group opening degree data comprises: when any one of all the temperature data is less than a preset low-temperature risk threshold, calculating all the temperature data by a preset opening degree curve formula to obtain first throttle valve opening degree data and second throttle valve opening degree data, combining the first throttle valve opening degree data and the second throttle valve opening degree data into throttle valve group opening degree data, and the preset opening degree curve formula is T=f(V01, V02), wherein T is temperature data, V01 is first throttle valve opening degree data, and V02 is second throttle valve opening degree data; in the throttle valve group, the process of adjusting the valve opening degree according to the throttle valve group opening degree data comprises: the first throttle valve is configured to adjust the valve opening degree according to the first throttle valve opening degree data; the second throttle valve is configured to adjust the valve opening degree according to the second throttle valve opening degree data.

4. The long convey pipe blowoff method according to claim 3, characterized by, Further comprising: generating a first stop valve closing instruction and a second stop valve closing instruction according to the emergency control instruction, sending the first stop valve closing instruction to the first stop valve, and sending the second stop valve closing instruction to the second stop valve; closing the valve according to the first stop valve closing instruction; closing the valve according to the second stop valve closing instruction.

5. A long distance pipeline blowdown system comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein, The computer program is configured to, when executed by the processor, implement the long-distance pipeline emptying method according to any one of claims 3 to 4.

6. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 5. The computer program is configured to, when executed by the processor, implement the long-distance pipeline emptying method according to any one of claims 3 to 4.

Images