CN115681830A - Device and method for starting and stopping gas station by one key - Google Patents
Device and method for starting and stopping gas station by one key Download PDFInfo
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Abstract
The invention relates to the technical field of pipeline leakage detection, and discloses a device and a method for starting and stopping a compressor station by one key, wherein in the process of starting and stopping by one key, leakage detection is carried out, and the method comprises the following steps: acquiring output information, and preliminarily judging whether the long transmission pipe is leaked or not based on the output information; if the leakage problem is preliminarily judged, acquiring flow data; judging whether the long conveying pipe leaks or not based on the flow data; if the leakage problem is determined, judging the conveying section with the leakage; acquiring detection data of a conveying section with leakage, and analyzing the leakage degree and position of the conveying section based on the detection data; and sending out early warning information based on the analysis result. The invention determines the leakage degree and position of the conveying section through gradual detection and analysis, and sends out early warning information based on the analysis result; the long-distance pipeline is prevented from being completely detected, the detection speed is increased, and the detection precision is improved.
Description
Technical Field
The invention relates to the technical field of compressed air supply systems, in particular to a device and a method for starting and stopping a gas station by one key.
Background
The gas compression station refers to a station yard provided with natural gas pressurization equipment. The gas station set in oil and gas field is called mine field gas station, which pressurizes low pressure natural gas and sends it to gas treating plant for desulfurizing, dewatering, decarbonizing and recovering liquefied petroleum gas, natural gas, etc. to make the gas reach the requirement of natural gas. The gas pressing station at the starting point of the long-distance natural gas pipeline is called a starting point gas pressing station, and is commonly called a first station. It receives and processes the commodity natural gas from factory, and after dust removal, metering and pressurization, it is transported to next station. The intermediate gas station is arranged along the pipeline and used for supplementing pressure energy consumed when gas flows along the natural gas pipeline and conveying the natural gas to the pipeline terminal point according to the required flow.
With the change of the production management mode of the natural gas pipeline, the regional management of the gas station is gradually popularized as an advanced management concept, various production operation technologies such as regional management, unattended operation, remote regulation and the like are required as supports, and the one-key station starting and stopping technology of the gas station is an important technical basis. The one-key start-stop comprises 6 parts of state feedback and alarm detection, automatic conduction of a process flow in a station, automatic start-stop of a compressed air system, automatic distribution of fans of a compressor plant, one-key start of a compressor unit, anti-surge control and load distribution. However, in the operation process of the long-distance natural gas pipeline, the long-distance natural gas pipeline is likely to leak due to the influence of factors such as oxidation, external environment change and pipeline damage. The natural gas leakage can cause environmental pollution and property loss, and can threaten personal safety under severe conditions, so the natural gas long-distance pipeline leakage detection has great significance for efficient and safe production.
Disclosure of Invention
The invention aims to provide a device and a method for one-key start and stop of a gas station, which solve the problem that the pipeline leakage is not detected in the one-key start and stop of a long-distance pipeline of the existing gas station.
In order to achieve the above object, the present invention provides a method for one-key start-stop of a gas station, wherein in the process of one-key start-stop, leakage detection is performed, and the method comprises the following steps:
acquiring output information, and preliminarily judging whether the long transmission pipe is leaked or not based on the output information;
if the leakage problem is preliminarily judged, acquiring flow data;
judging whether the long conveying pipe leaks or not based on the flow data;
if the leakage problem is determined, judging the conveying section with the leakage;
acquiring detection data of a conveying section with leakage, and analyzing the leakage degree and position of the conveying section based on the detection data;
and sending out early warning information based on the analysis result.
In one embodiment, acquiring the transportation information, and primarily judging whether the long transportation pipe leaks or not based on the transportation information comprises:
acquiring an actual output value, and judging whether the error between the actual output value and a preset target output value is within a preset output error range;
if the output error is within the preset output error range, preliminarily judging that the long conveying pipe is not leaked;
if the output error is not within the preset output error range, the leakage of the long conveying pipe is preliminarily judged.
In one embodiment, if a leakage problem is preliminarily determined, obtaining flow data includes:
a plurality of flow detection points are arranged at intervals in the long conveying pipe of the initial station and the intermediate station;
and acquiring flow data of each flow detection point.
In one embodiment, determining whether the long transmission pipe is leaking based on the flow data comprises:
judging whether the error of the flow data of the flow detection point and the preset flow data corresponding to the flow detection point is within a preset flow error range or not;
if the flow rate is within the preset flow rate error range, judging that the long conveying pipe is not leaked;
and if the flow rate is not within the preset flow rate error range, judging that the long conveying pipe leaks.
In one embodiment, if it is determined that a leakage problem occurs, determining a delivery segment where a leakage occurs includes:
a new flow detection point group consisting of a flow detection point which is not in the preset flow error range and a flow detection point before the first flow detection point which is not in the preset flow error range;
acquiring a difference value of adjacent flow detection points in the new flow detection point group;
judging whether a difference value graph drawn based on the difference value has only one fluctuation area;
if so, judging that the long conveying pipe between two adjacent flow detection points forming the fluctuation area is a conveying section with leakage;
if not, judging that the long conveying pipe between two adjacent flow detection points forming the fluctuation area in each fluctuation area is a conveying section with leakage.
In one embodiment, the sensed data includes an external surface pressure of the long-distance pipeline.
In one embodiment, acquiring detection data of a conveying section where a leakage occurs, and analyzing the degree and position of the leakage occurring in the conveying section based on the detection data comprises:
acquiring the outer surface pressure of the conveying section with leakage;
and acquiring the position information of the external surface pressure exceeding a preset leakage pressure value, wherein the position information is the position of the conveying section where leakage occurs.
In one embodiment, the method includes the steps of obtaining detection data of a conveying section where leakage occurs, analyzing the degree and position of leakage occurring in the conveying section based on the detection data, and further including:
acquiring a pressure value of a leakage conveying section;
and determining the leakage degree of the conveying section based on the relation between the pressure value and the preset pressure value.
In one embodiment, the issuing of the warning information based on the analysis result includes:
presetting a preset leakage degree matrix H0, and setting H0= (H1, H2, H3, H4), wherein H1 is a first preset leakage degree, H2 is a second preset leakage degree, H3 is a third preset leakage degree, and H4 is a fourth preset leakage degree, wherein H1 is more than H2 and less than H3 and less than H4;
presetting a preset early warning level matrix G0, and setting G0= (G1, G2, G3, G4), wherein G1 is a first preset early warning level, G2 is a second preset early warning level, G3 is a third preset early warning level, G4 is a fourth preset early warning level, and G1 is more than G2 and less than G3 and less than G4;
setting an early warning grade G according to the relation between the leakage degree H and each preset leakage degree:
when H is less than H1, selecting the first preset early warning grade G1 as an early warning grade G;
when H1 is not more than H and is less than H2, selecting the second preset early warning grade G2 as an early warning grade G;
when H2 is not more than H and is less than H3, selecting the third preset early warning grade G3 as an early warning grade G;
and when H3 is not more than H and is less than H4, selecting the fourth preset early warning grade G4 as an early warning grade G.
In order to achieve the above object, the present invention further provides a device for starting and stopping a gas station by one key, wherein the device comprises:
the outer surface of the long conveying pipe is coated with an elastic flame-retardant layer;
the detection device comprises a flowmeter and a pressure detector; the flowmeters are fixed in the long conveying pipe at intervals, and the pressure detectors are distributed in the elastic flame-proof layer at intervals;
the controller is electrically connected with the detection device and used for acquiring the output information and preliminarily judging whether the long transmission pipe leaks or not based on the output information;
if the leakage problem is preliminarily judged, acquiring flow data;
judging whether the long conveying pipe leaks or not based on the flow data;
if the leakage problem is determined, judging the conveying section with the leakage;
acquiring detection data of a conveying section with leakage, and analyzing the degree and position of the leakage of the conveying section based on the detection data;
and sending out early warning information based on the analysis result.
The invention discloses the following technical effects:
the invention provides a device and a method for starting and stopping a compressor station by one key, wherein the degree and the position of leakage of a conveying section are determined through gradual detection and analysis, and early warning information is sent out based on an analysis result; the long-distance pipeline is prevented from being completely detected, the detection speed is increased, and the detection precision is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a method for one-key start-stop of a gas station according to an embodiment of the invention;
FIG. 2 is a schematic illustration of an elongated delivery tube provided by an embodiment of the present invention;
FIG. 3 is a schematic illustration of a leaking transport section provided by an embodiment of the present invention;
FIG. 4 is a plot of the temperature difference across the fluctuation zone provided by an embodiment of the present invention;
FIG. 5 is a graph of the temperature difference between two zones of fluctuation provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram of a device for starting and stopping a compressor station by one key according to an embodiment of the invention;
wherein: 10. a long conveying pipe; 11. an elastic flame-retardant layer; 12. a pressure detector; 13. a flow meter; 20. a first station; 30. And (4) an intermediate station.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The one-key start-stop system consists of 6 parts, namely state feedback and alarm detection, automatic conduction of a process flow in a station, automatic start-stop of a compressed air system, automatic distribution of fans of a compressor plant, one-key start of a compressor unit, automatic commissioning and quit of anti-surge control and load distribution. The state feedback and alarm detection is used for automatically judging whether the state of equipment related to one-key station starting is normal or not; the in-station process flow automatic conduction is used for automatically checking whether the station process flow meets the station starting requirement or not, and automatically conducting the in-station process flow after the valve state meets the requirement; the compressed air system is automatically started and stopped to automatically check whether the pressure of the compressed air pipeline is normal. In the one-key start-stop process, no leakage detection is performed.
In order to avoid influencing start and stop by one key due to pipeline leakage, as shown in fig. 1, the embodiment discloses a method for starting and stopping by one key of a gas station, and in the process of starting and stopping by one key, leakage detection is performed, and the method comprises the following steps:
step S010, acquiring the output information, and preliminarily judging whether the long transmission pipe leaks or not based on the output information;
step S020, if the leakage problem is preliminarily judged, acquiring flow data;
step S030, judging whether the long conveying pipe leaks or not based on the flow data;
step S040, if the leakage problem is determined, judging the conveying section where the leakage occurs;
step S050, detecting data of the conveying section with leakage are obtained, and the degree and the position of the leakage of the conveying section are analyzed based on the detecting data;
and step S060, sending out early warning information based on the analysis result.
It can be understood that, in the above embodiment, whether the long conveying pipe leaks or not can be accurately determined through steps S010 to S030, so as to improve the determination accuracy; through the steps of S040-S050, the degree and the position of leakage of the conveying section can be accurately achieved, and the leakage detection accuracy rate is improved.
As shown in fig. 2-3, in some embodiments of the present application, obtaining the traffic information, and preliminarily determining whether the long transmission pipe is leaked based on the traffic information includes:
acquiring an actual output value, and judging whether the error between the actual output value and a preset target output value is within a preset output error range or not;
if the output error is within the preset output error range, preliminarily judging that the long conveying pipe is not leaked;
if the output error is not within the preset output error range, the leakage of the long-distance conveying pipe is preliminarily judged.
Specifically, assume that the initial throughput value is 1200 m 3 The preset target output value before the intermediate station is not pressurized is 1100 m 3 H, the preset output error range is-10 m 3 /h～+10 m 3 H is used as the reference value. If the actual throughput of the intermediate station is 1090 m 3 /h～1110 m 3 Within the range of/h, the leakage of the long conveying pipe is preliminarily judged. If the actual throughput of the intermediate station is 1060 m 3 And h, preliminarily judging that the long-distance conveying pipe leaks.
It can be understood that, in the above embodiment, by obtaining the actual output value, and determining whether the error between the actual output value and the preset target output value is within the preset output error range, the preliminary leak detection may be performed.
In some embodiments of the present application, if the leakage problem is preliminarily determined, obtaining flow data includes:
a plurality of flow detection points are arranged at intervals in the long conveying pipes of the initial station and the intermediate station;
and acquiring flow data of each flow detection point.
Whether long defeated pipe reveals based on flow data judgement includes:
judging whether the error of the flow data of the flow detection point and the preset flow data corresponding to the flow detection point is within a preset flow error range or not;
if the flow rate is within the preset flow rate error range, judging that the long conveying pipe is not leaked;
if the flow rate is not within the preset flow rate error range, the leakage of the long-distance transmission pipe is judged.
In particular, at the head station and intermediate stations8 flow detection points are arranged in the long conveying pipe at intervals, and are named as X1, X2, X3, X4, X5, X6, X7 and X8 along the direction from the initial station to the intermediate station; if the long transmission pipe is not leaked, the preset flow data corresponding to the flow detection points are 1200 m respectively 3 /h、1185 m 3 /h、1170 m 3 /h、1155 m 3 /h、1140 m 3 /h、1125 m 3 /h、1110 m 3 /h、1095 m 3 H is used as the reference value. The preset flow error range is-5 m 3 /h～+5 m 3 For example, if the actual flow data at flow detection point X4 is 1140 m 3 /h, and preset flow data 1155 m of flow detection point X4 3 Error of 15 m/h 3 And h, indicating that the flow is not within the preset flow error range, and judging that the long-distance pipeline leaks.
In some embodiments of the present application, if it is determined that a leakage problem occurs, determining a delivery segment where the leakage occurs includes:
a new flow detection point group consisting of a flow detection point which is not in the preset flow error range and a flow detection point before the first flow detection point which is not in the preset flow error range;
acquiring a difference value of adjacent flow detection points in the new flow detection point group;
judging whether a difference value graph drawn based on the difference value has only one fluctuation area;
if so, judging that the long conveying pipe between two adjacent flow detection points forming the fluctuation area is a conveying section with leakage;
if not, judging that the long conveying pipe between two adjacent flow detection points forming the fluctuation area in each fluctuation area is a conveying section with leakage.
As shown in fig. 4, it can be understood that, in the above embodiment, if the actual flow data of the actual detected flow detection points X1 to X8 are 1200 m respectively 3 /h、1185 m 3 /h、1170 m 3 /h、1135 m 3 /h、1115 m 3 /h、1095 m 3 /h、1075 m 3 /h、1055m 3 The flow detection points which are not in the preset flow error range are X4-X8, and the new flow detection point group is X3-X8; in the X3-X8 phaseThe difference between two adjacent flow detection points is 25m respectively 3 /h 、20 m 3 /h、20 m 3 /h、20 m 3 /h、20 m 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. In the difference diagram, only one fluctuation area exists, and the conveying section with leakage in the new flow detection point group X3-X8 is judged to be X3-X4.
As shown in FIG. 5, if the actual flow data at the actual detection flow detection points X1-X8 are 1200 m, respectively 3 /h、1185 m 3 /h、1170 m 3 /h、1135 m 3 /h、1115 m 3 /h、1095 m 3 /h、1070 m 3 /h、1035m 3 The flow detection points which are not in the preset flow error range are X4-X8, and the new flow detection point group is X3-X8; the difference value between two adjacent flow detection points in the X3-X8 is respectively 25m 3 /h 、20 m 3 /h、20 m 3 /h、30 m 3 /h、25 m 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. At the moment, two fluctuation areas exist, and conveying sections with leakage in a new flow detection point group X3-X8 are judged to be X3-X4 and X6-X7.
As shown in fig. 3, in some embodiments of the present application, the sensed data includes an external surface pressure of the long-distance pipeline.
The detection data of the transport section that takes place to reveal is obtained, and the degree and the position that take place to reveal in the transport section are carried on the basis of the analysis of detection data, include:
acquiring the outer surface pressure of the conveying section with leakage;
and acquiring the position information of the external surface pressure exceeding a preset leakage pressure value, wherein the position information is the position of the conveying section where leakage occurs.
It can be understood that, in the above embodiment, when a leakage occurs at a certain position of the conveying section, the elastic flame-retardant layer may bulge due to leakage of natural gas, the outer surface pressure exceeds a preset leakage pressure value, the position information that the outer surface pressure exceeds the preset leakage pressure value is obtained, and the position information is determined as the position where the leakage occurs at the conveying section.
In some embodiments of the present application, the method includes obtaining detection data of a conveying section where a leakage occurs, and analyzing a degree and a position of the conveying section where the leakage occurs based on the detection data, and further includes:
acquiring a pressure value of a leakage conveying section;
and determining the leakage degree of the conveying section based on the relation between the pressure value and the preset pressure value.
It is understood that, in the above-described embodiment, the larger the pressure value, the more serious the degree of occurrence of the leakage.
In some embodiments of the present application, the issuing of the warning information based on the analysis result includes:
presetting a preset leakage degree matrix H0, and setting H0= (H1, H2, H3, H4), wherein H1 is a first preset leakage degree, H2 is a second preset leakage degree, H3 is a third preset leakage degree, and H4 is a fourth preset leakage degree, wherein H1 is more than H2 and less than H3 and less than H4;
presetting a preset early warning level matrix G0, and setting G0= (G1, G2, G3, G4), wherein G1 is a first preset early warning level, G2 is a second preset early warning level, G3 is a third preset early warning level, G4 is a fourth preset early warning level, and G1 is more than G2 and less than G3 and less than G4;
setting an early warning grade G according to the relation between the leakage degree H and each preset leakage degree:
when H is less than H1, selecting a first preset early warning grade G1 as an early warning grade G;
when H1 is not more than H and less than H2, selecting a second preset early warning grade G2 as an early warning grade G;
when H2 is not more than H and less than H3, selecting a third preset early warning grade G3 as an early warning grade G;
and when H3 is not more than H and less than H4, selecting a fourth preset early warning grade G4 as an early warning grade G.
Specifically, a preset leakage degree matrix H0 is preset, and H0= (25%, 50%,75%, 100%), wherein 25% is a first preset leakage degree, 50% is a second preset leakage degree, 75% is a third preset leakage degree, and 100% is a fourth preset leakage degree, wherein 0 is equal to or less than 25% < 50% < 75% < 100%;
presetting a preset early warning level matrix G0, and setting G0= (G1, G2, G3, G4), wherein G1 is a first preset early warning level, G2 is a second preset early warning level, G3 is a third preset early warning level, G4 is a fourth preset early warning level, and G1 is greater than G2 and greater than G3 and less than G4;
setting an early warning grade G according to the relation between the leakage degree H and each preset leakage degree:
when H is less than 25%, selecting a first preset early warning grade G1 as an early warning grade G;
when H is more than or equal to 25% and less than 50%, selecting a second preset early warning grade G2 as an early warning grade G;
when H is more than or equal to 50% and less than 75%, selecting a third preset early warning grade G3 as an early warning grade G;
and when H is more than or equal to 75% and less than 100%, selecting a fourth preset early warning grade G4 as an early warning grade G.
It can be understood that, in the above embodiment, the early warning level G is set according to the relationship between the leakage degree H and each preset leakage degree, so as to remind the worker of the severity problem of the leakage problem, and the worker can conveniently adopt different remedial measures to remedy the problem.
It should be noted that the above scheme of the preferred embodiment is only a specific implementation manner proposed in the present application, and a person skilled in the art may select other preset leakage degree matrix H0 and preset early warning level matrix G0 according to actual situations, which does not affect the protection scope of the present application.
As shown in fig. 6, to achieve the above object, the present invention further provides an apparatus for one-key start/stop of a compressor station, the apparatus comprising:
the long conveying pipe 10 is characterized in that the outer surface of the long conveying pipe 10 is coated with an elastic flame-retardant layer 11;
a detection device including a flow meter 13 and a pressure detector 12; the flowmeter 13 is fixed in the long pipeline at intervals, and the pressure detectors 12 are distributed in the elastic flame-retardant layer 11 at intervals;
the controller is electrically connected with the detection device and used for acquiring the output information and preliminarily judging whether the long transmission pipe leaks or not based on the output information;
if the leakage problem is preliminarily judged, acquiring flow data;
judging whether the long conveying pipe leaks or not based on the flow data;
if the leakage problem is determined, judging the conveying section with the leakage;
acquiring detection data of a conveying section with leakage, and analyzing the degree and position of the leakage of the conveying section based on the detection data;
and sending out early warning information based on the analysis result.
It can be understood that, in the above embodiment, the device is simple, the acquisition of temperature and pressure can be realized, and the output value can be obtained by starting and stopping one station of the compressed gas station; the device can realize confirming the position of revealing step by step through various detection data that the controller analysis acquireed, has avoided carrying out whole detections to long-distance pipeline, has improved detection speed, has improved and has detected the precision.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for one-key start-stop of a compressor station is characterized in that leakage detection is carried out in the one-key start-stop process, and comprises the following steps:
acquiring output information, and preliminarily judging whether the long transmission pipe is leaked or not based on the output information;
if the leakage problem is preliminarily judged, flow data are obtained;
judging whether the long conveying pipe leaks or not based on the flow data;
if the leakage problem is determined, judging the conveying section with the leakage;
acquiring detection data of a conveying section with leakage, and analyzing the leakage degree and position of the conveying section based on the detection data;
and sending out early warning information based on the analysis result.
2. The method for one-key start and stop of the gas station according to claim 1, wherein the steps of obtaining the output information and preliminarily judging whether the long transmission pipe leaks or not based on the output information comprise the following steps:
acquiring an actual output value, and judging whether the error between the actual output value and a preset target output value is within a preset output error range;
if the output error is within the preset output error range, preliminarily judging that the long conveying pipe is not leaked;
if the output error is not within the preset output error range, the leakage of the long conveying pipe is preliminarily judged.
3. The method for one-key start-stop of the gas station according to claim 1, wherein if the leakage problem is preliminarily judged to occur, acquiring flow data, comprising:
a plurality of flow detection points are arranged at intervals in the long conveying pipe of the initial station and the intermediate station;
and acquiring flow data of each flow detection point.
4. The method for one-key start-stop of a compressor station according to claim 3, wherein judging whether the long conveying pipe leaks or not based on the flow data comprises:
judging whether the error of the flow data of the flow detection point and the preset flow data corresponding to the flow detection point is within a preset flow error range or not;
if the flow rate is within the preset flow rate error range, judging that the long conveying pipe is not leaked;
and if the flow rate is not within the preset flow rate error range, judging that the long conveying pipe leaks.
5. The method for one-key start-stop of a compressor station according to claim 4, wherein if it is determined that a leakage problem occurs, determining a transport section where the leakage occurs comprises:
a new flow detection point group consisting of a flow detection point which is not in the preset flow error range and a flow detection point before the first flow detection point which is not in the preset flow error range;
acquiring a difference value of adjacent flow detection points in the new flow detection point group;
judging whether a difference value graph drawn based on the difference value has only one fluctuation area;
if so, judging that the long conveying pipe between two adjacent flow detection points forming the fluctuation area is a conveying section with leakage;
if not, judging that the long conveying pipe between two adjacent flow detection points forming the fluctuation area in each fluctuation area is a conveying section with leakage.
6. The method for one-touch start-stop of a pneumatic station as claimed in claim 1, wherein the sensed data comprises an external surface pressure of the long-distance pipeline.
7. The method for one-key start and stop of the gas station according to claim 6, wherein the detection data of the conveying section with the leakage is obtained, and the degree and the position of the leakage of the conveying section are analyzed based on the detection data, and the method comprises the following steps:
acquiring the outer surface pressure of the conveying section with leakage;
and acquiring the position information of the external surface pressure exceeding a preset leakage pressure value, wherein the position information is the position of the conveying section where leakage occurs.
8. The method for one-key start-stop of a compressor station according to claim 7, wherein detection data of a transport section where a leak occurs is acquired, and the degree and position of the leak occurring in the transport section are analyzed based on the detection data, further comprising:
acquiring a pressure value of a conveying section with leakage;
and determining the leakage degree of the conveying section based on the relation between the pressure value and the preset pressure value.
9. The method for one-key start-stop of a compressor station according to claim 1, wherein the sending out early warning information based on the analysis result comprises:
presetting a preset leakage degree matrix H0, and setting H0= (H1, H2, H3, H4), wherein H1 is a first preset leakage degree, H2 is a second preset leakage degree, H3 is a third preset leakage degree, and H4 is a fourth preset leakage degree, wherein H1 is more than H2 and less than H3 and less than H4;
presetting a preset early warning level matrix G0, and setting G0= (G1, G2, G3, G4), wherein G1 is a first preset early warning level, G2 is a second preset early warning level, G3 is a third preset early warning level, G4 is a fourth preset early warning level, and G1 is greater than G2 and greater than G3 and less than G4;
setting an early warning grade G according to the relationship between the leakage degree H and each preset leakage degree:
when H is less than H1, selecting the first preset early warning grade G1 as an early warning grade G;
when H1 is not more than H and is less than H2, selecting the second preset early warning grade G2 as an early warning grade G;
when H2 is not more than H and is less than H3, selecting the third preset early warning grade G3 as an early warning grade G;
and when H3 is more than or equal to H and less than H4, selecting the fourth preset early warning level G4 as an early warning level G.
10. A device for a key start/stop of a compressor station, the device comprising:
the outer surface of the long conveying pipe is coated with an elastic flame-retardant layer;
the detection device comprises a flowmeter and a pressure detector; the flow meters are fixed in the long conveying pipe at intervals, and the pressure detectors are distributed in the elastic flame-proof layer at intervals;
the controller is electrically connected with the detection device and used for acquiring the output information and preliminarily judging whether the long transmission pipe leaks or not based on the output information;
if the leakage problem is preliminarily judged, acquiring flow data;
judging whether the long conveying pipe leaks or not based on the flow data;
if the leakage problem is determined, judging the conveying section with the leakage;
acquiring detection data of a conveying section with leakage, and analyzing the leakage degree and position of the conveying section based on the detection data;
and sending out early warning information based on the analysis result.
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