Fixed drainage pit anti-overflow system and method

Abstract

The invention discloses an anti-overflow system and method for a regular drainage pit, and the system comprises an obtaining module which is used for obtaining historical drainage parameters of a plurality of preset time periods, and generating a drainage evaluation value of a corresponding pipeline according to the historical drainage parameters; the setting module is used for setting the grade and the monitoring time node of the corresponding pipeline according to the drainage evaluation value, setting the storage unit connected with the pipeline according to the grade of the pipeline, and obtaining the real-time drainage parameter of the corresponding pipeline according to the monitoring time node; the control module is used for generating a storage evaluation value of the corresponding storage unit according to the real-time drainage parameter of the pipeline connected with the same storage unit, generating an overflow risk coefficient according to the storage evaluation value and the real-time water level parameter of the fixed drainage pit, and judging whether a drainage control instruction of the storage unit is generated or not according to the overflow risk coefficient; and the anti-overflow accuracy of the fixed drainage pit and the operation safety of workers of the thermal power plant are improved.

Description

Technical Field

[0001] The present application relates to the technical field of fixed-drainage pit overflow, and in particular to a fixed-drainage pit overflow prevention system and method. Background Art

[0002] The fixed drainage pit is used to receive the waste hot water from the regular sewage expansion tank, which is discharged into the sewer system after cooling. However, during the startup of the unit, the fixed drainage pit may overflow under the action of pressure or when the amount of drainage is large, causing the road surface near the fixed drainage pit to be flooded with hot water, and the steam to block the road surface, affecting the line of sight and posing a risk of scalding to people. Therefore, there is an urgent need for a fixed drainage pit overflow prevention system and method to reduce the overflow risk of the fixed drainage pit. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides a fixed drainage pit overflow prevention system and method, which calculates the hydrophobic evaluation value of the pipeline, connects the pipeline to the first storage unit or the second storage unit, and calculates the storage evaluation value of the first storage unit and the second storage unit, calculates the overflow risk coefficient in combination with the real-time water level parameters of the fixed drainage pit, accurately evaluates the overflow risk of the fixed drainage pit, sets the hydrophobic control instructions of the first storage unit and the second storage unit according to the overflow risk coefficient, and improves the overflow prevention accuracy of the fixed drainage pit and the working safety of the thermal power plant staff.

[0004] In some embodiments of the present application, a fixed-drainage pit overflow prevention system is provided, comprising:

[0005] An acquisition module, used to acquire historical drainage parameters of multiple preset time periods, and generate drainage evaluation values ​​of corresponding pipelines according to the historical drainage parameters;

[0006] A setting module, used to set the grade and monitoring time node of the corresponding pipeline according to the drainage evaluation value, set the storage unit connected to the pipeline according to the grade of the pipeline, and obtain the real-time drainage parameters of the corresponding pipeline according to the monitoring time node;

[0007] A control module, used to generate a storage evaluation value of a corresponding storage unit according to the real-time drainage parameters of the pipeline connected to the same storage unit, generate an overflow risk coefficient according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, and determine whether to generate a drainage control instruction for the storage unit according to the overflow risk coefficient;

[0008] Among them, the storage unit includes a first storage unit and a second storage unit, and the first storage unit, the second storage unit and the fixed row pit are connected.

[0009] In some embodiments of the present application, the step of generating a hydrophobic evaluation value of a corresponding pipeline according to historical hydrophobic parameters includes:

[0010] Establish multiple hydrophobicity evaluation indicators;

[0011] Determine the associated drainage parameter of each drainage evaluation index according to the correlation degree between the historical drainage parameter of each pipeline in a preset period and the drainage evaluation index;

[0012] Compare the associated drainage parameters of each pipeline in the preset period with the standard drainage parameters of the corresponding drainage evaluation index, and generate a first evaluation value of the corresponding drainage evaluation index of the current pipeline in the preset period according to the comparison result;

[0013] Generate a hydrophobicity evaluation value S of the corresponding pipeline according to the first evaluation values ​​of the plurality of hydrophobicity evaluation indicators of the same pipeline;

[0014]

[0015] Wherein, n is the hydrophobicity evaluation index, ai is the first evaluation value of the i-th hydrophobicity evaluation index, and ei is the weight coefficient of the i-th hydrophobicity evaluation index.

[0016] In some embodiments of the present application, setting the storage unit to which the pipeline is connected according to the grade of the pipeline includes:

[0017] Presetting a hydrophobic evaluation value threshold;

[0018] If the drainage evaluation value is greater than the drainage evaluation value threshold, the pipeline is set to the first level;

[0019] If the drainage evaluation value is less than the drainage evaluation value threshold, the pipeline is set to the second level;

[0020] If the pipeline is at the first level, the storage unit connected to the corresponding pipeline is set as the first storage unit;

[0021] If the pipeline is of the second level, the storage unit connected to the corresponding pipeline is set as the second storage unit.

[0022] In some embodiments of the present application, generating a storage evaluation value of a corresponding storage unit according to the real-time drainage parameters of a pipeline connected to the same storage unit includes:

[0023] Determine the first target period according to the last opening time node of the first drain valve connected to the first storage unit and the fixed drainage pit, and determine the second target period according to the last opening time node of the second drain valve connected to the second storage unit and the fixed drainage pit;

[0024] Generate a drainage cycle period of the corresponding pipeline according to the monitoring time node of the pipeline connected to the first storage unit, and generate a first drainage cycle average according to multiple drainage cycle periods of the pipeline connected to the first storage unit;

[0025] Generate a drainage cycle period of the corresponding pipeline according to the monitoring time node of the pipeline connected to the second storage unit, and generate a second drainage cycle period average according to multiple drainage cycle periods of the pipeline connected to the second storage unit;

[0026] Determine a first cycle number of a first drainage cycle mean of a pipeline connected to the first storage unit within a first target time period;

[0027] Determine a second cycle number of a second drainage cycle mean of the pipeline connected to the second storage unit within a second target time period;

[0028] Establishing a first hydrophobic amount accumulation model of the first storage unit and a second hydrophobic amount accumulation model of the second storage unit;

[0029] Generate a first predicted storage volume of the first storage unit according to a first hydrophobic volume accumulation model and a first cycle number of the pipeline connected to the first storage unit, and generate a second predicted storage volume of the second storage unit according to a second hydrophobic volume accumulation model and a second cycle number of the pipeline connected to the second storage unit;

[0030] A storage evaluation value of the first storage unit is generated according to the first predicted storage amount, and a storage evaluation value of the second storage unit is generated according to the second predicted storage amount.

[0031] In some embodiments of the present application, the first predicted storage capacity is compared with a pre-set first preset storage capacity threshold, and an initial storage evaluation value c1 of the first storage unit is generated according to the comparison result;

[0032] generating a first compensation coefficient f1 according to a pressure value of a first predicted storage amount of the first storage unit;

[0033] Generate a first storage evaluation value Q1 of the first storage unit according to the initial storage evaluation value of the first storage unit and the first compensation coefficient;

[0034] The calculation formula of the first storage evaluation value is: Q1 = c1 * f1;

[0035] Comparing the second predicted storage capacity with a preset second preset storage capacity threshold, and generating an initial storage evaluation value c2 of the second storage unit according to the comparison result;

[0036] generating a second compensation coefficient f2 according to a pressure value of a second predicted storage amount of the second storage unit;

[0037] Generate a second storage evaluation value Q2 of the second storage unit according to the initial storage evaluation value of the second storage unit and the second compensation coefficient;

[0038] The calculation formula of the second storage evaluation value is: Q2=c2*f2.

[0039] In some embodiments of the present application, a first preset first pressure value interval, a second preset first pressure value interval, a third preset first pressure value interval, a fourth preset first preset pressure value interval, a first preset compensation coefficient v1, a second preset compensation coefficient v2, a third preset compensation coefficient v3, a fourth preset compensation coefficient v4 are preset, and 0.8<v1<v2<1<v3<v4<1.2;

[0040] When the pressure value of the first predicted storage volume is within the first preset first pressure value interval, the fourth preset compensation coefficient v4 is selected as the first compensation coefficient f1, that is, f1=v4;

[0041] When the pressure value of the first predicted storage volume is within the second preset first pressure value interval, the third preset compensation coefficient v3 is selected as the first compensation coefficient f1, that is, f1=v3;

[0042] When the pressure value of the first predicted storage volume is within the third preset first pressure value interval, the second preset compensation coefficient v2 is selected as the first compensation coefficient f1, that is, f1=v2;

[0043] When the pressure value of the first predicted storage volume is within the fourth preset first pressure value interval, the first preset compensation coefficient v1 is selected as the first compensation coefficient f1, that is, f1=v1;

[0044] A first preset second pressure value interval, a second preset second pressure value interval, a third preset second pressure value interval, and a fourth preset second preset pressure value interval are also preset;

[0045] When the pressure value of the second predicted storage volume is within the first preset second pressure value interval, the fourth preset compensation coefficient v4 is selected as the second compensation coefficient f2, that is, f2=v4;

[0046] When the pressure value of the second predicted storage volume is within the second preset second pressure value interval, the third preset compensation coefficient v3 is selected as the second compensation coefficient f2, that is, f2=v3;

[0047] When the pressure value of the second predicted storage volume is within the third preset second pressure value interval, the second preset compensation coefficient v2 is selected as the second compensation coefficient f2, that is, f2=v2;

[0048] When the pressure value of the second predicted storage volume is within the fourth preset second pressure value interval, the first preset compensation coefficient v1 is selected as the second compensation coefficient f2, that is, f2=v1.

[0049] In some embodiments of the present application, an overflow risk coefficient is generated according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, including:

[0050] generating a comprehensive storage evaluation value according to a first storage evaluation value of the first storage unit and a second storage evaluation value of the second storage unit;

[0051] Obtain the real-time water level parameters of the fixed drainage pit in the third target period, and construct a water level change curve in chronological order;

[0052] Determine the water level threshold and water level fluctuation degree of the fixed drainage pit in the third target period according to the water level change curve;

[0053] Generate the water level evaluation value y of the fixed drainage pit according to the water level threshold and the degree of water level fluctuation;

[0054] Generate overflow risk coefficient F according to comprehensive storage evaluation value and water level evaluation value y;

[0055] The calculation formula of the overflow risk coefficient F is:

[0056] F=x1*m1*(Q1*d1+Q2*d2)+x2*m2*y;

[0057] Among them, (Q1*d1+Q2*d2) is the comprehensive storage evaluation value, d1 is the weight coefficient of the first storage unit, d2 is the weight coefficient of the second storage unit, m1 is the weight coefficient of the comprehensive storage evaluation value, x1 is the first overflow risk conversion coefficient, x2 is the second overflow risk conversion coefficient, and m2 is the weight coefficient of the water level evaluation value.

[0058] In some embodiments of the present application, judging whether to generate a hydrophobic control instruction for a storage unit according to an overflow risk coefficient includes:

[0059] Presetting a first overflow risk coefficient threshold and a second overflow risk coefficient threshold;

[0060] When the overflow risk coefficient is less than the first overflow risk coefficient threshold, no drainage control instruction of the storage unit is generated;

[0061] When the overflow risk coefficient is between the first overflow risk coefficient threshold and the second overflow risk coefficient threshold, the required drainage volume P1 of the first storage unit and the acceptable drainage volume P2 of the second storage unit are generated;

[0062] If P1<P2, the drain volume P1 required to be discharged from the first storage unit is transported to the second storage unit;

[0063] If P1>P2, the water level threshold difference between the water level threshold of the fixed drainage pit and the preset water level threshold is calculated, and the required drainage volume P1 is allocated according to the water level threshold difference and the acceptable drainage volume P2 to obtain a first allocation volume and a second allocation volume, and the first allocation volume is delivered to the fixed drainage pit, and the second allocation volume is delivered to the second storage unit;

[0064] When the overflow risk coefficient is greater than the second overflow risk coefficient threshold, the closing time of the first steam trap valve and the second steam trap valve is set, and an alarm signal is sent.

[0065] In some embodiments of the present application, a method for preventing overflow of a fixed drainage pit is also included:

[0066] Acquire historical drainage parameters for multiple preset time periods, and generate drainage evaluation values ​​for corresponding pipelines according to the historical drainage parameters;

[0067] The grade and monitoring time node of the corresponding pipeline are set according to the drainage evaluation value, the storage unit connected to the pipeline is set according to the grade of the pipeline, and the real-time drainage parameters of the corresponding pipeline are obtained according to the monitoring time node;

[0068] Generate a storage evaluation value of the corresponding storage unit according to the real-time drainage parameters of the pipeline connected to the same storage unit, generate an overflow risk coefficient according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, and determine whether to generate a drainage control instruction for the storage unit according to the overflow risk coefficient;

[0069] Among them, the storage unit includes a first storage unit and a second storage unit, and the first storage unit, the second storage unit and the fixed row pit are connected.

[0070] Compared with the prior art, the overflow prevention system and method of a fixed-drainage pit in the embodiment of the present application has the following beneficial effects:

[0071] By calculating the drainage evaluation value of the pipeline, connecting the pipeline to the first storage unit or the second storage unit, and calculating the storage evaluation values ​​of the first storage unit and the second storage unit, the overflow risk coefficient is calculated in combination with the real-time water level parameters of the fixed drainage pit, the overflow risk of the fixed drainage pit is accurately assessed, and the drainage control instructions of the first storage unit and the second storage unit are set according to the overflow risk coefficient, thereby improving the overflow prevention accuracy of the fixed drainage pit and the working safety of the thermal power plant staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 It is a schematic diagram of a fixed-drainage pit overflow prevention system in a preferred embodiment of the present application;

[0073] Figure 2 It is a flow chart of a method for preventing overflow of a fixed drainage pit in a preferred embodiment of the present application. DETAILED DESCRIPTION

[0074] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0075] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0076] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0077] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0078] like Figure 1 As shown, a fixed-drainage pit overflow prevention system according to a preferred embodiment of the present application includes:

[0079] An acquisition module, used to acquire historical drainage parameters of multiple preset time periods, and generate drainage evaluation values ​​of corresponding pipelines according to the historical drainage parameters;

[0080] A setting module, used to set the grade and monitoring time node of the corresponding pipeline according to the drainage evaluation value, set the storage unit connected to the pipeline according to the grade of the pipeline, and obtain the real-time drainage parameters of the corresponding pipeline according to the monitoring time node;

[0081] A control module, used to generate a storage evaluation value of a corresponding storage unit according to the real-time drainage parameters of the pipeline connected to the same storage unit, generate an overflow risk coefficient according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, and determine whether to generate a drainage control instruction for the storage unit according to the overflow risk coefficient;

[0082] Among them, the storage unit includes a first storage unit and a second storage unit, and the first storage unit, the second storage unit and the fixed row pit are connected.

[0083] In this embodiment, the preset time period refers to the time period of each unit startup, the first storage unit refers to the first fixed-displacement expansion tank, the second storage unit refers to the second fixed-displacement expansion tank, and the capacity of the second fixed-displacement expansion tank is greater than that of the first fixed-displacement expansion tank. The pipeline refers to the high-pressure emergency drain, the deaerator emergency drain, the deaerator overflow drain, the medium-pressure start-up drain main pipe, the high-pressure start-up drain main pipe, the boiler drum accident drain and the boiler drum body drain, soot blowing drain, and the historical drain parameters include drain pressure, drain volume, drain temperature, etc.

[0084] In some embodiments of the present application, the step of generating a hydrophobic evaluation value of a corresponding pipeline according to historical hydrophobic parameters includes:

[0085] Establish multiple hydrophobicity evaluation indicators;

[0086] Determine the associated drainage parameter of each drainage evaluation index according to the correlation degree between the historical drainage parameter of each pipeline in a preset period and the drainage evaluation index;

[0087] Compare the associated drainage parameters of each pipeline in the preset period with the standard drainage parameters of the corresponding drainage evaluation index, and generate a first evaluation value of the corresponding drainage evaluation index of the current pipeline in the preset period according to the comparison result;

[0088] Generate a hydrophobicity evaluation value S of the corresponding pipeline according to the first evaluation values ​​of the plurality of hydrophobicity evaluation indicators of the same pipeline;

[0089]

[0090] Wherein, n is the hydrophobicity evaluation index, ai is the first evaluation value of the i-th hydrophobicity evaluation index, and ei is the weight coefficient of the i-th hydrophobicity evaluation index.

[0091] In this embodiment, the drain evaluation index refers to the drain cause that causes overflow in the fixed drainage pit, and is determined based on the historical overflow log of the fixed drainage pit, for example, high-pressure heater accident drain, steam drum pressure, excessive drain volume, etc. The degree of correlation between the drain evaluation index and the historical drain parameters is set according to the historical drain parameters involved in the drain cause when setting the drain evaluation index in the historical overflow log, and the associated drain parameter of each drain evaluation index is obtained. The associated drain parameter is compared with the corresponding standard drain parameter. If the associated drain parameter is greater than the standard drain parameter, the smaller the first evaluation value is, and if the associated drain parameter is less than the standard drain parameter, the larger the first evaluation value is.

[0092] In this embodiment, a corresponding weight coefficient is set according to the number of appearances of the hydrophobic evaluation index in multiple historical overflow logs. The more the number of appearances, the larger the weight coefficient. The evaluation accuracy of the hydrophobic evaluation value of each pipeline is further improved through the first evaluation values ​​of multiple hydrophobic evaluation indicators and the corresponding weight coefficients. The larger the hydrophobic evaluation value, the smaller the influence of the corresponding pipeline hydrophobicity on the overflow of the fixed drainage pit.

[0093] In some embodiments of the present application, setting the storage unit to which the pipeline is connected according to the grade of the pipeline includes:

[0094] Presetting a hydrophobic evaluation value threshold;

[0095] If the drainage evaluation value is greater than the drainage evaluation value threshold, the pipeline is set to the first level;

[0096] If the drainage evaluation value is less than the drainage evaluation value threshold, the pipeline is set to the second level;

[0097] If the pipeline is at the first level, the storage unit connected to the corresponding pipeline is set as the first storage unit;

[0098] If the pipeline is of the second level, the storage unit connected to the corresponding pipeline is set as the second storage unit.

[0099] In this embodiment, the pipeline is of the first level, which means that the corresponding pipeline drainage has little effect on the overflow of the fixed drainage pit, and the first level pipeline is connected to the first storage unit. The first storage unit is used to store the pipeline drainage that has little effect on the overflow of the fixed drainage pit. The pipeline is of the second level, which means that the corresponding pipeline drainage has a greater impact on the overflow of the fixed drainage pit, and the second level pipeline is connected to the second storage unit. The second storage unit is used to store the pipeline drainage that has a greater impact on the overflow of the fixed drainage pit. The storage capacity, pressure resistance and temperature of the first storage unit are all smaller than those of the second storage unit.

[0100] In this embodiment, by determining the pipeline grade and connecting the corresponding storage units according to the pipeline grade, the overflow risk of the fixed drainage pit is reduced, thereby improving the work safety level of the thermal power plant staff.

[0101] In some embodiments of the present application, generating a storage evaluation value of a corresponding storage unit according to the real-time drainage parameters of a pipeline connected to the same storage unit includes:

[0102] Determine the first target period according to the last opening time node of the first drain valve connected to the first storage unit and the fixed drainage pit, and determine the second target period according to the last opening time node of the second drain valve connected to the second storage unit and the fixed drainage pit;

[0103] Generate a drainage cycle period of the corresponding pipeline according to the monitoring time node of the pipeline connected to the first storage unit, and generate a first drainage cycle average according to multiple drainage cycle periods of the pipeline connected to the first storage unit;

[0104] Generate a drainage cycle period of the corresponding pipeline according to the monitoring time node of the pipeline connected to the second storage unit, and generate a second drainage cycle period average according to multiple drainage cycle periods of the pipeline connected to the second storage unit;

[0105] Determine a first cycle number of a first drainage cycle mean of a pipeline connected to the first storage unit within a first target time period;

[0106] Determine a second cycle number of a second drainage cycle mean of the pipeline connected to the second storage unit within a second target time period;

[0107] Establishing a first hydrophobic amount accumulation model of the first storage unit and a second hydrophobic amount accumulation model of the second storage unit;

[0108] Generate a first predicted storage volume of the first storage unit according to a first hydrophobic volume accumulation model and a first cycle number of the pipeline connected to the first storage unit, and generate a second predicted storage volume of the second storage unit according to a second hydrophobic volume accumulation model and a second cycle number of the pipeline connected to the second storage unit;

[0109] A storage evaluation value of the first storage unit is generated according to the first predicted storage amount, and a storage evaluation value of the second storage unit is generated according to the second predicted storage amount.

[0110] In this embodiment, the opening time node of the first steam trap is set in advance and the same time interval is set, and the second steam trap is manually controlled to be opened or closed.

[0111] In this embodiment, the drainage cycle period refers to how long it takes for the corresponding pipeline to drain, the mean of the drainage cycle period refers to the average duration of drainage for multiple pipelines of the same storage unit, and the number of cycles refers to the average duration of drainage and how many times drainage can be performed within the corresponding target time period. The number of cycles is input into the corresponding drainage volume accumulation model to obtain the predicted drainage volume of the corresponding storage unit, laying the foundation for the subsequent evaluation of the storage evaluation value of the corresponding storage unit and improving the assessment accuracy of the storage evaluation value.

[0112] In this embodiment, the target time period is obtained according to the opening time nodes of the drain valves of the storage unit and the fixed drainage pit, and the corresponding drain volume accumulation model is set according to the historical drain parameters of the storage unit in the same historical period as the target time period, so as to predict the drain volume of the storage unit in the target time period and obtain the storage evaluation value of the corresponding storage unit.

[0113] In this embodiment, by predicting the amount of drainage within the target time period and obtaining the storage evaluation values ​​of the first storage unit and the second storage unit, the foundation is laid for the subsequent calculation of the overflow risk coefficient, the overflow risk of the fixed discharge pit is reduced, the drainage is temporarily stored in the storage unit, and the drainage amount and drainage pressure entering the fixed discharge pit are reduced.

[0114] In some embodiments of the present application, the first predicted storage capacity is compared with a pre-set first preset storage capacity threshold, and an initial storage evaluation value c1 of the first storage unit is generated according to the comparison result;

[0115] generating a first compensation coefficient f1 according to a pressure value of a first predicted storage amount of the first storage unit;

[0116] Generate a first storage evaluation value Q1 of the first storage unit according to the initial storage evaluation value of the first storage unit and the first compensation coefficient;

[0117] The calculation formula of the first storage evaluation value is: Q1 = c1 * f1;

[0118] Comparing the second predicted storage capacity with a preset second preset storage capacity threshold, and generating an initial storage evaluation value c2 of the second storage unit according to the comparison result;

[0119] generating a second compensation coefficient f2 according to a pressure value of a second predicted storage amount of the second storage unit;

[0120] Generate a second storage evaluation value Q2 of the second storage unit according to the initial storage evaluation value of the second storage unit and the second compensation coefficient;

[0121] The calculation formula of the second storage evaluation value is: Q2=c2*f2.

[0122] In this embodiment, the pressure value of the first predicted storage volume is set according to the historical pressure value corresponding to the historical storage volume of the first storage unit, and the pressure value of the second predicted storage volume is set according to the historical pressure value corresponding to the historical storage volume of the second storage unit. The compensation coefficient is generated by the pressure value to improve the accuracy of the storage evaluation value of the corresponding storage unit. The larger the storage evaluation value, the larger the hydrophobic storage volume that the storage unit can receive, which lays a data foundation for the subsequent calculation of the overflow risk coefficient, improves the accurate assessment of the overflow risk of the fixed drainage pit, and formulates corresponding hydrophobic control instructions based on the overflow risk coefficient to reduce the overflow probability of the fixed drainage pit.

[0123] In some embodiments of the present application, a first preset first pressure value interval, a second preset first pressure value interval, a third preset first pressure value interval, a fourth preset first preset pressure value interval, a first preset compensation coefficient v1, a second preset compensation coefficient v2, a third preset compensation coefficient v3, a fourth preset compensation coefficient v4 are preset, and 0.8<v1<v2<1<v3<v4<1.2;

[0124] When the pressure value of the first predicted storage volume is within the first preset first pressure value interval, the fourth preset compensation coefficient v4 is selected as the first compensation coefficient f1, that is, f1=v4;

[0125] When the pressure value of the first predicted storage volume is within the second preset first pressure value interval, the third preset compensation coefficient v3 is selected as the first compensation coefficient f1, that is, f1=v3;

[0126] When the pressure value of the first predicted storage volume is within the third preset first pressure value interval, the second preset compensation coefficient v2 is selected as the first compensation coefficient f1, that is, f1=v2;

[0127] When the pressure value of the first predicted storage volume is within the fourth preset first pressure value interval, the first preset compensation coefficient v1 is selected as the first compensation coefficient f1, that is, f1=v1;

[0128] A first preset second pressure value interval, a second preset second pressure value interval, a third preset second pressure value interval, and a fourth preset second preset pressure value interval are also preset;

[0129] When the pressure value of the second predicted storage volume is within the first preset second pressure value interval, the fourth preset compensation coefficient v4 is selected as the second compensation coefficient f2, that is, f2=v4;

[0130] When the pressure value of the second predicted storage volume is within the second preset second pressure value interval, the third preset compensation coefficient v3 is selected as the second compensation coefficient f2, that is, f2=v3;

[0131] When the pressure value of the second predicted storage volume is within the third preset second pressure value interval, the second preset compensation coefficient v2 is selected as the second compensation coefficient f2, that is, f2=v2;

[0132] When the pressure value of the second predicted storage volume is within the fourth preset second pressure value interval, the first preset compensation coefficient v1 is selected as the second compensation coefficient f2, that is, f2=v1.

[0133] In this embodiment, the first preset first pressure value interval < the second preset first pressure value interval < the third preset first pressure value interval < the fourth preset first preset pressure value interval, and the first preset second pressure value interval < the second preset second pressure value interval < the third preset second pressure value interval < the fourth preset second preset pressure value interval.

[0134] In this embodiment, multiple preset first pressure value intervals and preset second pressure value intervals are set in advance, and the corresponding pressure values ​​are determined according to the first predicted storage capacity and the second predicted storage capacity in the first storage unit and the second storage unit, and a reasonable compensation coefficient is selected according to the pressure value. When the pressure value is larger, the hydrophobicity in the storage unit is easy to overflow, thereby reducing the storage capacity of the storage unit, and the compensation coefficient should be smaller, that is, the storage evaluation value is smaller.

[0135] In some embodiments of the present application, an overflow risk coefficient is generated according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, including:

[0136] generating a comprehensive storage evaluation value according to a first storage evaluation value of the first storage unit and a second storage evaluation value of the second storage unit;

[0137] Obtain the real-time water level parameters of the fixed drainage pit in the third target period, and construct a water level change curve in chronological order;

[0138] Determine the water level threshold and water level fluctuation degree of the fixed drainage pit in the third target period according to the water level change curve;

[0139] Generate the water level evaluation value y of the fixed drainage pit according to the water level threshold and the degree of water level fluctuation;

[0140] Generate overflow risk coefficient F according to comprehensive storage evaluation value and water level evaluation value y;

[0141] The calculation formula of the overflow risk coefficient F is:

[0142] F=x1*m1*(Q1*d1+Q2*d2)+x2*m2*y;

[0143] Among them, (Q1*d1+Q2*d2) is the comprehensive storage evaluation value, d1 is the weight coefficient of the first storage unit, d2 is the weight coefficient of the second storage unit, m1 is the weight coefficient of the comprehensive storage evaluation value, x1 is the first overflow risk conversion coefficient, x2 is the second overflow risk conversion coefficient, and m2 is the weight coefficient of the water level evaluation value.

[0144] In this embodiment, the third target period refers to the time period after the starting node of receiving the hydrophobic amount of the first storage unit or the second storage unit, the water level threshold refers to the maximum water level parameter within the third target period, and the water level fluctuation degree refers to the fluctuation range of the real-time water level parameter within the third target period. When the water level threshold is closer to the preset water level threshold and the water level fluctuation degree is smaller, the water level evaluation value is larger, and vice versa.

[0145] In this embodiment, the larger the water level evaluation value and the larger the comprehensive storage evaluation value, the smaller the overflow risk coefficient, that is, the smaller the overflow risk of the fixed discharge pit; when the water level evaluation value or the smaller the comprehensive storage evaluation value, the larger the overflow risk coefficient.

[0146] In some embodiments of the present application, judging whether to generate a hydrophobic control instruction for a storage unit according to an overflow risk coefficient includes:

[0147] Presetting a first overflow risk coefficient threshold and a second overflow risk coefficient threshold;

[0148] When the overflow risk coefficient is less than the first overflow risk coefficient threshold, no drainage control instruction of the storage unit is generated;

[0149] When the overflow risk coefficient is between the first overflow risk coefficient threshold and the second overflow risk coefficient threshold, the required drainage volume P1 of the first storage unit and the acceptable drainage volume P2 of the second storage unit are generated;

[0150] If P1<P2, the drain volume P1 required to be discharged from the first storage unit is transported to the second storage unit;

[0151] If P1>P2, the water level threshold difference between the water level threshold of the fixed drainage pit and the preset water level threshold is calculated, and the required drainage volume P1 is allocated according to the water level threshold difference and the acceptable drainage volume P2 to obtain a first allocation volume and a second allocation volume, and the first allocation volume is delivered to the fixed drainage pit, and the second allocation volume is delivered to the second storage unit;

[0152] When the overflow risk coefficient is greater than the second overflow risk coefficient threshold, the closing time of the first steam trap valve and the second steam trap valve is set, and an alarm signal is sent.

[0153] In some embodiments of the present application, Figure 2 As shown, a method for preventing overflow of a fixed-drainage pit is also included:

[0154] Step S201: acquiring historical drainage parameters of multiple preset time periods, and generating drainage evaluation values ​​of corresponding pipelines according to the historical drainage parameters;

[0155] Step S202: setting the level and monitoring time node of the corresponding pipeline according to the drainage evaluation value, setting the storage unit connected to the pipeline according to the level of the pipeline, and obtaining the real-time drainage parameters of the corresponding pipeline according to the monitoring time node;

[0156] Step S203: Generate a storage evaluation value of the corresponding storage unit according to the real-time drainage parameters of the pipeline connected to the same storage unit, generate an overflow risk coefficient according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, and determine whether to generate a drainage control instruction for the storage unit according to the overflow risk coefficient;

[0157] Among them, the storage unit includes a first storage unit and a second storage unit, and the first storage unit, the second storage unit and the fixed row pit are connected.

[0158] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A fixed-drainage pit overflow prevention system, characterized in that: include: An acquisition module, used to acquire historical drainage parameters of multiple preset time periods, and generate drainage evaluation values ​​of corresponding pipelines according to the historical drainage parameters; A setting module, used to set the grade and monitoring time node of the corresponding pipeline according to the drainage evaluation value, set the storage unit connected to the pipeline according to the grade of the pipeline, and obtain the real-time drainage parameters of the corresponding pipeline according to the monitoring time node; A control module, used to generate a storage evaluation value of a corresponding storage unit according to the real-time drainage parameters of the pipeline connected to the same storage unit, generate an overflow risk coefficient according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, and determine whether to generate a drainage control instruction for the storage unit according to the overflow risk coefficient; Among them, the storage unit includes a first storage unit and a second storage unit, and the first storage unit, the second storage unit and the fixed row pit are connected.

2. The fixed-drainage pit overflow prevention system according to claim 1, characterized in that: The step of generating a drainage evaluation value of a corresponding pipeline according to historical drainage parameters includes: Establish multiple hydrophobicity evaluation indicators; Determine the associated drainage parameter of each drainage evaluation index according to the correlation degree between the historical drainage parameter of each pipeline in a preset period and the drainage evaluation index; Compare the associated drainage parameters of each pipeline in the preset period with the standard drainage parameters of the corresponding drainage evaluation index, and generate a first evaluation value of the corresponding drainage evaluation index of the current pipeline in the preset period according to the comparison result; Generate a hydrophobicity evaluation value S of the corresponding pipeline according to the first evaluation values ​​of the plurality of hydrophobicity evaluation indicators of the same pipeline; Wherein, n is the hydrophobicity evaluation index, ai is the first evaluation value of the i-th hydrophobicity evaluation index, and ei is the weight coefficient of the i-th hydrophobicity evaluation index.

3. The anti-overflow system for fixed-drainage pits according to claim 2, characterized in that: The step of setting the storage unit connected to the pipeline according to the grade of the pipeline includes: Presetting a hydrophobic evaluation value threshold; If the drainage evaluation value is greater than the drainage evaluation value threshold, the pipeline is set to the first level; If the drainage evaluation value is less than the drainage evaluation value threshold, the pipeline is set to the second level; If the pipeline is at the first level, the storage unit connected to the corresponding pipeline is set as the first storage unit; If the pipeline is of the second level, the storage unit connected to the corresponding pipeline is set as the second storage unit.

4. The anti-overflow system for fixed-drainage pits according to claim 3, characterized in that: The storage evaluation value of the corresponding storage unit is generated according to the real-time drainage parameters of the pipeline connected to the same storage unit, including: Determine the first target period according to the last opening time node of the first drain valve connected to the first storage unit and the fixed drainage pit, and determine the second target period according to the last opening time node of the second drain valve connected to the second storage unit and the fixed drainage pit; Generate a drainage cycle period of the corresponding pipeline according to the monitoring time node of the pipeline connected to the first storage unit, and generate a first drainage cycle average according to multiple drainage cycle periods of the pipeline connected to the first storage unit; Generate a drainage cycle period of the corresponding pipeline according to the monitoring time node of the pipeline connected to the second storage unit, and generate a second drainage cycle period average according to multiple drainage cycle periods of the pipeline connected to the second storage unit; Determine a first cycle number of a first drainage cycle mean of a pipeline connected to the first storage unit within a first target time period; Determine a second cycle number of a second drainage cycle mean of the pipeline connected to the second storage unit within a second target time period; Establishing a first hydrophobic amount accumulation model of the first storage unit and a second hydrophobic amount accumulation model of the second storage unit; Generate a first predicted storage volume of the first storage unit according to a first hydrophobic volume accumulation model and a first cycle number of the pipeline connected to the first storage unit, and generate a second predicted storage volume of the second storage unit according to a second hydrophobic volume accumulation model and a second cycle number of the pipeline connected to the second storage unit; A storage evaluation value of the first storage unit is generated according to the first predicted storage amount, and a storage evaluation value of the second storage unit is generated according to the second predicted storage amount.

5. The fixed-drainage pit overflow prevention system according to claim 4, characterized in that: Compare the first predicted storage capacity with a pre-set first preset storage capacity threshold, and generate an initial storage evaluation value c1 of the first storage unit according to the comparison result; generating a first compensation coefficient f1 according to a pressure value of a first predicted storage amount of the first storage unit; Generate a first storage evaluation value Q1 of the first storage unit according to the initial storage evaluation value of the first storage unit and the first compensation coefficient; The calculation formula of the first storage evaluation value is: Q1 = c1 * f1; Comparing the second predicted storage capacity with a preset second preset storage capacity threshold, and generating an initial storage evaluation value c2 of the second storage unit according to the comparison result; generating a second compensation coefficient f2 according to a pressure value of a second predicted storage amount of the second storage unit; Generate a second storage evaluation value Q2 of the second storage unit according to the initial storage evaluation value of the second storage unit and the second compensation coefficient; The calculation formula of the second storage evaluation value is: Q2=c2*f2.

6. The fixed-drainage pit overflow prevention system according to claim 5, characterized in that: A first preset first pressure value interval, a second preset first pressure value interval, a third preset first pressure value interval, a fourth preset first preset pressure value interval, a first preset compensation coefficient v1, a second preset compensation coefficient v2, a third preset compensation coefficient v3, a fourth preset compensation coefficient v4 are preset, and 0.8<v1<v2<1<v3<v4<1.2; When the pressure value of the first predicted storage volume is within the first preset first pressure value interval, the fourth preset compensation coefficient v4 is selected as the first compensation coefficient f1, that is, f1=v4; When the pressure value of the first predicted storage volume is within the second preset first pressure value interval, the third preset compensation coefficient v3 is selected as the first compensation coefficient f1, that is, f1=v3; When the pressure value of the first predicted storage volume is within the third preset first pressure value interval, the second preset compensation coefficient v2 is selected as the first compensation coefficient f1, that is, f1=v2; When the pressure value of the first predicted storage volume is within the fourth preset first pressure value interval, the first preset compensation coefficient v1 is selected as the first compensation coefficient f1, that is, f1=v1; A first preset second pressure value interval, a second preset second pressure value interval, a third preset second pressure value interval, and a fourth preset second preset pressure value interval are also preset; When the pressure value of the second predicted storage volume is within the first preset second pressure value interval, the fourth preset compensation coefficient v4 is selected as the second compensation coefficient f2, that is, f2=v4; When the pressure value of the second predicted storage volume is within the second preset second pressure value interval, the third preset compensation coefficient v3 is selected as the second compensation coefficient f2, that is, f2=v3; When the pressure value of the second predicted storage volume is within the third preset second pressure value interval, the second preset compensation coefficient v2 is selected as the second compensation coefficient f2, that is, f2=v2; When the pressure value of the second predicted storage volume is within the fourth preset second pressure value interval, the first preset compensation coefficient v1 is selected as the second compensation coefficient f2, that is, f2=v1.

7. The fixed-drainage pit overflow prevention system according to claim 5, characterized in that: The overflow risk factor is generated based on the storage evaluation value and the real-time water level parameters of the drainage pit, including: generating a comprehensive storage evaluation value according to a first storage evaluation value of the first storage unit and a second storage evaluation value of the second storage unit; Obtain the real-time water level parameters of the fixed drainage pit in the third target period, and construct a water level change curve in chronological order; Determine the water level threshold and water level fluctuation degree of the fixed drainage pit in the third target period according to the water level change curve; Generate the water level evaluation value y of the fixed drainage pit according to the water level threshold and the degree of water level fluctuation; Generate overflow risk coefficient F according to comprehensive storage evaluation value and water level evaluation value y; The calculation formula of the overflow risk coefficient F is: F=x1*m1*(Q1*d1+Q2*d2)+x2*m2*y; Among them, (Q1*d1+Q2*d2) is the comprehensive storage evaluation value, d1 is the weight coefficient of the first storage unit, d2 is the weight coefficient of the second storage unit, m1 is the weight coefficient of the comprehensive storage evaluation value, x1 is the first overflow risk conversion coefficient, x2 is the second overflow risk conversion coefficient, and m2 is the weight coefficient of the water level evaluation value.

8. The fixed-drainage pit overflow prevention system according to claim 7, characterized in that: Determine whether to generate a drain control instruction for the storage unit according to the overflow risk coefficient, including: Presetting a first overflow risk coefficient threshold and a second overflow risk coefficient threshold; When the overflow risk coefficient is less than the first overflow risk coefficient threshold, no drainage control instruction of the storage unit is generated; When the overflow risk coefficient is between the first overflow risk coefficient threshold and the second overflow risk coefficient threshold, the required drainage volume P1 of the first storage unit and the acceptable drainage volume P2 of the second storage unit are generated; If P1<P2, the drain volume P1 required to be discharged from the first storage unit is transported to the second storage unit; If P1>P2, the water level threshold difference between the water level threshold of the fixed drainage pit and the preset water level threshold is calculated, and the required drainage volume P1 is allocated according to the water level threshold difference and the acceptable drainage volume P2 to obtain a first allocation volume and a second allocation volume, and the first allocation volume is delivered to the fixed drainage pit, and the second allocation volume is delivered to the second storage unit; When the overflow risk coefficient is greater than the second overflow risk coefficient threshold, the closing time of the first steam trap valve and the second steam trap valve is set, and an alarm signal is sent.

9. A method for preventing overflow of a fixed drainage pit, characterized in that: include: Acquire historical drainage parameters for multiple preset time periods, and generate drainage evaluation values ​​for corresponding pipelines according to the historical drainage parameters; The grade and monitoring time node of the corresponding pipeline are set according to the drainage evaluation value, the storage unit connected to the pipeline is set according to the grade of the pipeline, and the real-time drainage parameters of the corresponding pipeline are obtained according to the monitoring time node; Generate a storage evaluation value of the corresponding storage unit according to the real-time drainage parameters of the pipeline connected to the same storage unit, generate an overflow risk coefficient according to the storage evaluation value and the real-time water level parameters of the fixed drainage pit, and determine whether to generate a drainage control instruction for the storage unit according to the overflow risk coefficient; Among them, the storage unit includes a first storage unit and a second storage unit, and the first storage unit, the second storage unit and the fixed row pit are connected.

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