CN116301073A - Drainage pump modularized start-stop control system with unified stop liquid level and control method - Google Patents
Drainage pump modularized start-stop control system with unified stop liquid level and control method Download PDFInfo
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Abstract
The system comprises drainage equipment, a sensor, a general control function module and a man-machine interaction device, wherein the drainage equipment comprises n drainage pumps which are respectively numbered as 1# and 2# … … n #, the drainage equipment is connected with the general control function module, and the general control function module controls the drainage equipment to start/stop; the n draining pumps are divided into m+1 groups from high to low according to the priority of starting the pumps, namely a 0-level main pump group, a 1-level standby pump group and a … … m-level standby pump group respectively; the general control function module is used for automatically controlling n draining pumps in the draining equipment and is connected with the man-machine interaction device. The invention aims to solve the problem that when the drainage system pump station technology is modified, the number of the main start, the standby start and the whole pump station drainage pumps is changed, and the control program is required to be rewritten or changed on a large scale. Various control parameters can be flexibly set according to actual needs, and the method is unlimited.
Description
Technical Field
The invention relates to the field of control of drainage systems, in particular to a drainage pump modularized start-stop control system and a control method with unified stop liquid level.
Background
In industrial control, there are many applications where a drainage system is needed, for example: the water turbine is arranged at the top cover part of the water truck room to leak water, and a water turbine top cover drainage system is needed; a riverbed rock mass water leakage is arranged in the dam body of the hydropower station, and a dam foundation drainage system is needed; the unit maintenance of the hydropower station requires a unit maintenance drainage system; the factory is rainy and drained, and a factory area rainwater drainage system is needed. These systems are all typical drainage systems. The drainage system is generally designed with a plurality of drainage pumps as drainage equipment, when the drainage system pump station technology is modified, the number of the main pump station, the standby pump station and the whole pump station drainage pump station is changed, a control program is required to be rewritten or changed in a large scale, and a great deal of manpower, material resources and financial resources are required to be consumed for modifying the technology modification program. At present, a portable, universal, modularized and flexible-extensible drainage pump modularized start-stop control method for changing the number of the drainage pumps of the main start-up, standby start-up and full pump stations and the start-stop control parameters is not disclosed, but a control program is not required to be changed or redesigned on a large scale.
Disclosure of Invention
In order to solve the technical problems, the invention provides a drainage pump modularized start-stop control system with unified stop pump liquid level and a control method, and aims to solve the problem that when the technology of a drainage system pump station is modified, the number of main start-up, standby start-up and full pump station drainage pumps is changed, and a control program is required to be rewritten or changed on a large scale. Various control parameters can be flexibly set according to actual needs, and the method is unlimited.
The technical scheme adopted by the invention is as follows:
a modular start-stop control system for a drainage pump with unified liquid level for stopping the pump comprises drainage equipment, a sensor, a general control function module and a man-machine interaction device,
the drainage equipment is used for pumping and draining the water stored in the drainage pool to the reservoir;
the drainage equipment comprises n drainage pumps, wherein the numbers of the drainage pumps are 1# and 2# … … n #, the drainage equipment is connected with a general control function module, and the general control function module controls the drainage equipment to start/stop; the n draining pumps are divided into m+1 groups from high to low according to the priority of starting the pumps, namely a 0-level main pump group, a 1-level standby pump group and a … … m-level standby pump group, and m is a natural number.
The plurality of sensors are respectively arranged on the drainage pool, the reservoir and the drainage equipment and used for collecting the liquid level of the drainage pool, the pump running state, the pump fault state, the pump automatic state and the pump running times of the drainage equipment, and the pump running time is connected with the universal control function module;
the general control function module is used for automatically controlling n draining pumps in the draining equipment and is connected with the man-machine interaction device.
The drainage pool is connected with drainage equipment through a first pipeline, and the drainage equipment is connected with the reservoir through a second pipeline.
The plurality of sensors are connected with the universal control functional module through an electric loop, the plurality of sensors are used for collecting the liquid level of the drainage pool, the pump running state, the pump fault state, the pump hand automatic state and the running times of the pump of the drainage equipment, and the running time of the pump is transmitted to the universal control functional module through the electric loop.
The general control function module is connected with the man-machine interaction device through a communication loop, receives drainage system control parameters set by the man-machine interaction device through the communication loop, and comprises start-stop parameters, pump station parameters and rotation parameters, and carries out logic processing according to the collected drainage pool liquid level and the pump running state, pump fault state, pump automatic state and pump running times of the drainage equipment through an electric loop, and after the running time of the pump is subjected to logic processing, the electric loop is used for automatically controlling n drainage pumps in the drainage equipment, and meanwhile, drainage system state parameter information is transmitted to the man-machine interaction device through the communication loop.
The start-stop parameters include: level 0 main pump set starting level H 0 Starting level H of 1-stage backup pump unit 1 … … m-level backup pump set starting level H m Equal (m is a natural number), the stop liquid level of the main pump group and each level pump group is the same and is H 0 '. Wherein H is 0 ’<H 0 <H 1 <H 2 <……<H m 。
The pump station parameters include: the total number N of drainage pumps of the drainage system and the number N of drainage pumps of the main pump group 0 Number N of drainage pumps of 1-stage pump group 1 Number N of drainage pumps of … … m-level standby pump unit m 。
The rotation parameters include: a pump fault state weight value a; a manual state weight value b of the pump; a weight value c of the number of pump operations; a weight value d of the pump run time; the running state weight value e of the pump, etc.
The functions of the general control function module comprise a pump starting quantity calculation module, a rotation sequencing module and a pump starting and stopping control module;
the pump starting quantity calculation module is used for calculating the pump starting quantity according to the control parameters of the drainage system: the start-stop parameters, the pump station parameters and the water drainage pool liquid level H are calculated by adopting a start-pump quantity calculation method, and the start-pump quantity x is output to a start-stop pump control module.
The rotation sequencing module is used for sequencing all the pump state signals of the drainage system according to rotation parameters and various working condition factors: the pump running state, the pump fault state, the pump hand automatic state, the pump running times, the pump running time and the like of the drainage equipment adopt a priority wheel change sequencing method and output a rotation sequence to the start-stop pump control module. The rotation sequence is a pump number sequence array, and the rotation sequences are sequentially arranged according to the order of the priority of the drainage pump corresponding to the pump number from high to low.
The start-stop pump control module receives the information of the start-stop pump quantity x, the rotation sequence and the like output by the start-stop pump quantity calculation module, and outputs a drainage pump start-stop control signal to the drainage equipment according to the state signals of all pumps of the drainage system under various working condition factors.
The man-machine interaction device is communicated with the universal control function module, and the drainage system control parameters set by a user through the man-machine interaction device, namely, start-stop parameters, pump station parameters and rotation parameters, are transmitted to the universal control function module, and meanwhile, the man-machine interaction device collects drainage system state parameter information sent by the universal control function module and performs graphical display.
The drainage system state parameter information comprises a rotation sequence, a drainage pool liquid level, a pump running state of drainage equipment, a pump fault state, a pump automatic state, the running times of a pump and the running time of the pump.
A modularized start-stop control method for a drainage pump comprises a start-up quantity calculation method, a priority wheel change sequencing method and a start-stop pump control method;
the method for calculating the number of started pumps comprises the following steps:
Step 3, a pump starting quantity calculation module detects whether H is detected>H 1 If yes, x=n 0 +N 1 Step 4, entering a step; if not, enter step 4.
……
Step m+2, a pump starting quantity calculating module detects whether H is present or not>H m If yes, x=n 0 +N 1 +……+N m Step m+3; if not, entering the m+3 step.
Step m+3, and detecting whether H is detected by a pump starting quantity calculation module<H 0 ' if yes, x=0, go to the m+4 step; if not, directly entering the (m+4) th step.
And step m+4, starting the pump quantity calculation module to output x, and returning to the step 1.
The method for calculating the number of started pumps specifically comprises m+4 steps in total.
When m=0, namely the control system only has a main pump group and no 1-m-level standby pump group, the method for calculating the number of pumps is specifically comprised of 4 steps in total, wherein the m+2th step is the 2 nd step, the m+3rd step is the 3 rd step, and the m+4th step is the 4 th step;
when m=1, namely, the control system only has a main pump group and 1-stage standby pump group and no 2-m-stage standby pump group, the method for calculating the number of pumps is specifically comprised of 4 steps in total, wherein the m+2 step is the 3 rd step, the m+3 step is the 4 th step, and the m+4 step is the 5 th step;
when m=2, namely the control system only has a main pump group, a 1-stage standby pump group and a 2-stage standby pump group and no 3-m-stage standby pump group, the method for calculating the starting pump quantity specifically comprises 4 steps in total, wherein the m+2th step is the 4 th step, the m+3rd step is the 5 th step, and the m+4th step is the 6 th step;
and so on.
The priority level round-robin sequencing method comprises the following steps:
step 1: the rotation sequencing module collects the total number N of drainage pumps of the drainage system.
Step 2: the rotation sequencing module collects state signals of various working condition factors of all pumps, and calculates and determines various working condition values of all pumps.
In the step 2, the multiple working condition factors include: pump running state, pump failure state, pump hand automatic state, pump running times, pump running time. The steps of the invention take the five working condition factors as examples, and the working condition factors can be expanded according to the actual application conditions during actual application.
According to various working condition factors, the various working condition values of all pumps are determined as follows:
in all pumps, if the pump is in an operating state, the working condition value V takes a value of 1; if the pump is in a non-running state, the working condition value V takes a value of 0. Let the working condition value of the n-type pump be V n . Where N.gtoreq.n.gtoreq.1.
In all pumps, if the pump is in a non-fault state, the working condition value X takes a value of 1; if the pump cannot work normally, the working condition value X takes on a value of 0. Let the working condition value of the n-type pump be X n . Where N.gtoreq.n.gtoreq.1.
In all pumps, if the manual and automatic state of the pump is 'automatic', the state working condition value Y takes a value of 1; if the manual and automatic state of the pump is manual, the working condition value Y of the state is 0. The reason for this is that the manual status of the pump is set to "automatic" priority over "manual". Let the working condition value of the n-type pump be Y n . Where N.gtoreq.n.gtoreq.1.
In all pumps, the number of rising edges of the operation state of the pump can be counted according to the operation state of the pump to obtain the operation times of the pump, the operation times of the pump are sequenced, and the working condition value Z of the pump times corresponding to the times from high to low sequentially takes the values of 1,2 … N … N-1 and N. Where N.gtoreq.n.gtoreq.1. Setting the frequency operating mode value of the n-number pump asZ n 。
In all pumps, according to the running state of the pump, the running state accumulation duration time of the pump can be timed to obtain the running time of the pump, the running time of the pump is sequenced, and the time is sequentially 1,2 … N … N-1 and N from the long to the short corresponding pump times working condition value U. Wherein N.gtoreq.n.gtoreq.1. Let the number of times working condition value of n-number pump be U n 。
Step 3: the rotation sequencing module collects weight values of various working condition factors of all pumps.
In the step 3, a fault state weight value a of the set pump is collected; a manual state weight value b of the pump; a weight value c of the number of pump operations; a weight value d of the pump run time; the pump operating state weight e.
The user sets the weight values corresponding to various working condition factors according to the self requirements, and generally, the more important the working condition factors are, the larger the influence is, and the larger the weight is. Normally, to ensure normal function, the necessary operating conditions include pump operating state, pump failure state, pump automatic state, and e > a > b. If the start and stop are controlled only according to the operation times of the pump, e > a > b > c > d=0; if start-stop is controlled only according to the running time of the pump, e > a > b > d > c=0; if the start and stop are controlled according to the operation times and the operation time of the pump and preferentially according to the operation times of the pump, e > a > b > c > d >0; if the start-stop is controlled according to the operation times and the operation time of the pump and preferentially according to the operation time of the pump, e > a > b > d > c >0.
Step 4: the rotation sequencing module calculates the priority score of each pump according to the working condition values corresponding to various working condition factors of all the pumps and the corresponding weight values.
In the step 4, the priority score m=ax+by+cz+du+ev of each pump is calculated; priority score M for pump n n ＝aX n +bY n +cZ n +dU n +eV n 。
Step 5: the rotation sequencing module sequences the priority of all pumps in the system according to the priority score of each pump, and obtains a corresponding pump number sequence array according to the priority of the pumps from high to low;
in the step 5, according to M n Is prioritized by the size of the pumps, and the priority score M of the n-number pump n The larger the priority, the higher the priority, the more front the pump number n is arranged in the queue
Then the priority of the pump is from high to low, corresponding to the pump number sequence: { n 1 ，n 2 ，……，n N-1 ，n N ' record as a group team [ N ]]。
Step 6: the rotation sequencing module outputs a pump number sequence array.
In the step 6, a pump number sequence is output: { n 1 ，n 2 ，……，n N-1 ，n N "array team [ N ]]。
Step 7: and (3) detecting the running states of all the pumps by the rotation sequencing module, and returning to the step (2) if the pumps stop running.
The detailed steps of the start-stop pump control method are as follows:
1. the start-stop pump control module 12 collects the pump number sequence team [ N ], x and the operating status of the pump, and proceeds to step 2.
2. Among all pumps of the first x elements in pump number team [ N ], all pumps in the non-operational state are started. Expressed in language C-like form:
for(j＝0，j<x,j++)
{
if (the team [ j ] pump is in a non-running state) starts the team [ j ] pump;
}
and then proceeds to step 3.
3. After excluding the pumps of the first x elements of the pump number team [ N ], all pumps in operation are stopped among all the remaining pumps. Expressed in language C-like form:
for(j＝x，j<N,j++)
{
if (team [ j ] pump is in run state) stops team [ j ] pump;
}
and then returns to step 1.
In the method, j is an intermediate control variable and is a natural number.
The invention relates to a drainage pump modularized start-stop control system with unified stop liquid level and a control method, which have the following technical effects:
1) By adopting the drainage pump modularized start-stop control system and the control method with unified pump stop liquid level, the problems that when the drainage system pump station technology is modified, the number of the main 0-level main pump group, each level standby pump group and the whole pump station drainage pump is changed, the starting liquid level of the 0-level main pump group and each level standby pump group is changed, and when the weight values corresponding to various working condition factors are changed, the control program is required to be rewritten or changed on a large scale can be solved.
2) The method is a portable, universal and modularized pump control method, can be flexibly expanded, can flexibly change the number of the 0-level main pump set, the 0-level standby pump set and the full pump station drainage pump set when the control system technology is modified, flexibly change the starting liquid level of the 0-level main pump set and the starting liquid level of each level standby pump set, and can flexibly change the weight values corresponding to various working condition factors without large-scale change or redesign and writing of control programs, and only needs to modify pump station parameters, start-stop parameters and rotation parameters through a man-machine interaction device, thereby greatly saving manpower, material resources and financial resources.
3) The method has wide applicability. The start-stop parameters, the pump station parameters and the rotation parameters can be flexibly set according to actual requirements, and the conditions are unlimited;
4) The pump starting quantity calculation module adopts a pump starting quantity calculation method, the rotation sequencing module adopts a priority wheel change sequencing method, the modularized programming is realized, and the pump starting and stopping control module adopts a pump starting and stopping control method, so that the modularized programming is realized. After the modularized programming is realized, the single control function module has simple and efficient program, fewer execution sentences, low memory occupancy rate, short execution period and higher efficiency. After the modular programming is realized, the functions of the modules are relatively independent and stable, the modules are not easily influenced by the mutual coupling of other programs, the programs are easy to read and maintain, and the program running is not easy to make mistakes and fly away. After the modular programming is realized, the complex functions can be simplified, and the complex and difficult-to-realize functions are disassembled into simple and easy-to-realize sub-functions, so that the design, the extension and the derivatization are convenient.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of a modular start-stop control system for a drain pump with unified pump stop level.
Fig. 2 is a schematic diagram of the general control function module structure of the present invention.
FIG. 3 is a flow chart of a method for calculating the number of pumps started in the present invention.
Fig. 4 is a flow chart of the priority round robin sequencing method of the present invention.
FIG. 5 is a flow chart of a method of controlling a start-stop pump according to the present invention.
Detailed Description
As shown in fig. 1 and 2, a drainage pump modularized start-stop control system with unified pump stop liquid level comprises a drainage pool 1, a reservoir 2, a pipeline 3, drainage equipment 4, a sensor 5, a general control function module 6, a man-machine interaction device 7, an electric loop 8 and a communication loop 9.
The drainage pool 1 is a place for storing incoming water, and the drainage equipment 4 is waited to pump and drain the liquid such as the water stored in the drainage pool to the reservoir 2.
The reservoir 2 is where the drain water is stored.
The drainage tank 1 is connected with the drainage device 4 through the first pipeline 3, and the drainage device 4 is connected with the reservoir 2 through the second pipeline.
The drainage device 4 comprises n drainage pumps, which are numbered as 1# and 2# … … n # respectively, and receives start/stop control of the general control function module 6 through the electric loop 8. The n draining pumps are divided into m+1 groups from high to low according to the priority of starting the pumps, namely a 0-level main pump group, a 1-level standby pump group and a … … m-level standby pump group (m is a natural number).
The plurality of sensors 5 collect physical quantity parameters or status signals of the drainage basin 1, the reservoir 2, the pipe 3, the drainage device 4 in the drainage system, such as the liquid level of the drainage basin 1, the pump operation state of the drainage device 4, the pump failure state, the pump automatic state, the operation times of the pump, the operation time of the pump, etc., and transmit the same to the general control function module 6 through the electrical circuit 8.
The general control function module 6 receives the control parameters of the drainage system, such as start-stop parameters, pump station parameters and rotation parameters, set by the man-machine interaction device 7 through the communication loop 9, and according to the liquid level H of the drainage tank 1 collected by the sensor 5 received by the electric loop 8 and the state signals of various working condition factors of all pumps obtained directly or indirectly, such as: the pump running state, the pump fault state, the pump automatic state, the pump running times, the pump running time and the like of the drainage equipment 4 are logically processed by adopting a drainage pump modularized start-stop control method, n drainage pumps in the drainage equipment 4 are automatically controlled through an electric loop 8, and meanwhile, drainage system state parameter information is transmitted to a man-machine interaction device 7 through a communication loop 9.
The start-stop parameters are as follows: level 0 main pump set starting level H 0 Starting level H of 1-stage backup pump unit 1 Stop liquid level H of 1-stage backup pump set 1 Priming level H of' … … m stage arm pump set m Equal (m is a natural number), the stop liquid level of the main pump group and each level pump group is the same and is H 0 '. Wherein H is 0 ’<H 0 <H 1 <H 2 <……<H m 。
Pump station parameters are as follows: the total number N of drainage pumps of the drainage system and the number N of drainage pumps of the main pump group 0 Number N of drainage pumps of 1-stage pump group 1 Number N of drainage pumps of … … m-level standby pump unit m 。
Rotation parameters are as follows: a pump fault state weight value a; a manual state weight value b of the pump; a weight value c of the number of pump operations; a weight value d of the running times of the pump; the running state weight value e of the pump, etc.
The man-machine interaction device 7 communicates with the general control function module 6. Drainage system control parameters set by a user through the man-machine interaction device 7: the start-stop parameters, the pump station parameters and the rotation parameters are transmitted to the universal control function module 6, and meanwhile, the man-machine interaction device 7 collects drainage system state parameter information sent by the universal control function module 6 to be displayed graphically. The drainage system state parameter information comprises a rotation sequence, the liquid level of the drainage pool 1, the pump running state of the drainage equipment 4, a pump fault state, a pump hand automatic state, the running times of the pump and the running time of the pump.
The electric loop 8 is connected with the sensor 5 and the universal control function module 6, and the drainage equipment 4 and the universal control function module 6, so that transmission of state signals and control signals is realized.
And the communication loop 9 is connected with the universal control function module 6 and the man-machine interaction device 7 to realize the transmission of control parameters and state information of the drainage system.
The control function module 6 adopts a PCS-9150 series controller independently developed by Nanjing Rui relay protection electric Limited company.
The human interaction device 7 employs a touch screen of model TPC1570Gi of kunluki brand.
The functions of the general control function module 6 consist of a pump starting number calculation module 10, a rotation sequencing module 11 and a pump starting and stopping control module 12.
The pump starting number calculation module 10 is used for calculating the pump starting number according to the control parameters of the drainage system: start-stop parameters, pump station parameters, and drainage system status signals: the liquid level H of the drainage tank 1 and the like, and the pump starting quantity x is output to the pump starting and stopping control module 12 by adopting a pump starting quantity calculation method.
The rotation sequencing module 11 is used for controlling parameters according to a drainage system: rotation parameters and state signals of various working conditions of all pumps of the drainage system: the pump operation state, pump failure state, pump hand automatic state, pump operation times, pump operation time, etc. of the drainage device 4 are adopted to output a rotation sequence to the start-stop pump control module 12 by adopting a priority rotation sequencing method. The rotation sequence is a pump number sequence array, and the rotation sequences are sequentially arranged according to the order of the priority of the drainage pump corresponding to the pump number from high to low.
The start-stop pump control module 12 receives the information such as the start-up pump number x output by the start-up pump number calculation module 10, the rotation sequence output by the rotation sequencing module 11, and the like, and according to the state signals of various working condition factors of all pumps of the drainage system: the pump running state of the drainage device 4 adopts a start-stop pump control method, and a drainage pump start-stop control signal is output to the drainage device 4.
A modularized start-stop control method for a drainage pump comprises a start-up quantity calculation method, a priority wheel change sequencing method and a start-stop pump control method;
the method for calculating the number of started pumps comprises the following detailed steps:
Step 3, pump start number calculation module 10 detects whether H is present>H 1 If yes, x=n 0 +N 1 Step 4, entering a step; if not, entering the m+3 step.
……
Step m+2, pump start number calculation module 10 detects whether H is present>H m If yes, x=n 0 +N 1 +……+N m Step m+3; if not, entering the m+3 step.
Step m+3 step, pump start number calculation module 10 detects whether H is<H 0 ' if yes, x=0, go to the m+4 step; if not, directly entering the (m+4) th step.
Step m+4, the pump starting number calculation module 10 outputs x, and returns to step 1.
The method for calculating the number of started pumps specifically comprises m+4 steps in total.
When m=0, namely the control system only has a main pump group and no 1-m-level standby pump group, the method for calculating the number of pumps is specifically comprised of 4 steps in total, wherein the m+2th step is the 2 nd step, the m+3rd step is the 3 rd step, and the m+4th step is the 4 th step;
when m=1, namely, the control system only has a main pump group and 1-stage standby pump group and no 2-m-stage standby pump group, the method for calculating the number of pumps is specifically comprised of 4 steps in total, wherein the m+2 step is the 3 rd step, the m+3 step is the 4 th step, and the m+4 step is the 5 th step;
when m=2, namely the control system only has a main pump group, a 1-stage standby pump group and a 2-stage standby pump group and no 3-m-stage standby pump group, the method for calculating the starting pump quantity specifically comprises 4 steps in total, wherein the m+2th step is the 4 th step, the m+3rd step is the 5 th step, and the m+4th step is the 6 th step;
and so on.
The detailed steps of the priority round robin sequencing method are as follows:
step 1: the rotation sequencing module 11 collects the total number N of drainage pumps of the drainage system.
Step 2: the rotation sequencing module 11 collects state signals of various working conditions of all pumps, and calculates and determines various working condition values of all pumps.
In the step 2, the multiple working condition factors include: pump running state, pump failure state, pump hand automatic state, pump running times, pump running time. The steps of the invention take the five working condition factors as examples, and the working condition factors can be expanded according to the actual application conditions during actual application.
According to various working condition factors, the various working condition values of all pumps are determined as follows:
in all pumps, if the pump is in an operating state, the working condition value V takes a value of 1; if the pump is in a non-running state, the working condition value V takes a value of 0. Let the working condition value of the n-type pump be V n . Where N.gtoreq.n.gtoreq.1.
In all pumps, if the pump is in a non-failure stateThe value of the working condition value X is 1; if the pump cannot work normally, the working condition value X takes on a value of 0. Let the working condition value of the n-type pump be X n . Where N.gtoreq.n.gtoreq.1.
In all pumps, if the manual and automatic state of the pump is 'automatic', the state working condition value Y takes a value of 1; if the manual and automatic state of the pump is manual, the working condition value Y of the state is 0. The reason for this is that the manual status of the pump is set to "automatic" priority over "manual". Let the working condition value of the n-type pump be Y n . Where N.gtoreq.n.gtoreq.1.
In all pumps, the number of rising edges of the operation state of the pump can be counted according to the operation state of the pump to obtain the operation times of the pump, the operation times of the pump are sequenced, and the working condition value Z of the pump times corresponding to the times from high to low sequentially takes the values of 1,2 … N … N-1 and N. Where N.gtoreq.n.gtoreq.1. Setting the frequency working condition value of the n-number pump as Z n 。
In all pumps, according to the running state of the pump, the running state accumulation duration time of the pump can be timed to obtain the running time of the pump, the running time of the pump is sequenced, and the time is sequentially 1,2 … N … N-1 and N from the long to the short corresponding pump times working condition value U. Wherein N.gtoreq.n.gtoreq.1. Let the number of times working condition value of n-number pump be U n 。
Step 3: the rotation sequencing module 11 collects the weight values of various working condition factors of all pumps.
In the step 3, a fault state weight value a of the set pump is collected; a manual state weight value b of the pump; a weight value c of the number of pump operations; a weight value d of the pump run time; the pump operating state weight e.
The user sets the weight values corresponding to various working condition factors according to the self requirements, and generally, the more important the working condition factors are, the larger the influence is, and the larger the weight is. Normally, to ensure normal function, the necessary operating conditions include pump operating state, pump failure state, pump automatic state, and e > a > b. If the start and stop are controlled only according to the operation times of the pump, e > a > b > c > d=0; if start-stop is controlled only according to the running time of the pump, e > a > b > d > c=0; if the start and stop are controlled according to the operation times and the operation time of the pump and preferentially according to the operation times of the pump, e > a > b > c > d >0; if the start-stop is controlled according to the operation times and the operation time of the pump and preferentially according to the operation time of the pump, e > a > b > d > c >0.
Step 4: the rotation sequencing module 11 calculates the priority score of each pump according to the working condition values corresponding to the working condition factors of all the pumps and the corresponding weight values.
In the step 4, the priority score m=ax+by+cz+du+ev of each pump is calculated; priority score M for pump n n ＝aX n +bY n +cZ n +dU n +eV n 。
Step 5: the rotation sequencing module 11 sequences the priority of all pumps in the system according to the priority score of each pump, and obtains a corresponding pump number sequence array according to the priority of the pumps from high to low;
in the step 5, the priority of the pumps is ordered according to the size of Mn, and M is set as the higher the priority score Mn of the n pumps is, the higher the priority is, and the more the pump number n is arranged at the front of the position of the queue n1 ≧M n2 ≧……≧M nN-1 ≧M nN According to the priority of the pump from high to low, the corresponding pump number sequence is as follows: { n 1 ，n 2 ，……，n N-1 ，n N ' record as a group team [ N ]]。
Step 6: the rotation ordering module 11 outputs a pump number sequence array.
In the step 6, a pump number sequence is output: { n 1 ，n 2 ，……，n N-1 ，n N "array team [ N ]]。
Step 7: the rotation sequencing module 11 detects the running state of all the pumps, and if any, the pumps stop running, and returns to step 2.
The detailed steps of the start-stop pump control method are as follows:
1. the start-stop pump control module 12 collects the pump number sequence team [ N ], x and the operating status of the pump, and proceeds to step 2.
2. Among all pumps of the first x elements in pump number team [ N ], all pumps in the non-operational state are started. Expressed in language C-like form:
for(j＝0，j<x,j++)
{
if (the team [ j ] pump is in a non-running state) starts the team [ j ] pump;
}
and then proceeds to step 3.
3. After excluding the pumps of the first x elements of the pump number team [ N ], all pumps in operation are stopped among all the remaining pumps. Expressed in language C-like form:
for(j＝x，j<N,j++)
{
if (team [ j ] pump is in run state) stops team [ j ] pump;
}
and then returns to step 1.
In the method, j is an intermediate control variable and is a natural number.
Claims (9)
1. The utility model provides a control system is opened to unified drain pump modularization of stopping pump liquid level, includes drainage equipment (4), sensor (5), general control function module (6), human-computer interaction device (7), its characterized in that:
the drainage device (4) is used for pumping and draining the water stored in the drainage pool (1) to the reservoir (2);
the drainage device (4) comprises n drainage pumps, the numbers of the drainage pumps are 1# and 2# … … n #, the drainage device (4) is connected with a general control functional module (6), and the general control functional module (6) controls the drainage device (4) to start/stop; the n draining pumps are divided into m+1 groups from high to low according to the priority of starting the pumps, namely a 0-level main pump group, a 1-level standby pump group and a … … m-level standby pump group respectively;
the plurality of sensors (5) are respectively arranged on the drainage pool (1), the water reservoir (2) and the drainage equipment (4) and are used for collecting the liquid level of the drainage pool (1), the pump running state, the pump fault state, the pump automatic state and the pump running times of the drainage equipment (4), and the pump running time is connected with the universal control function module (6);
the universal control functional module (6) is used for automatically controlling n draining pumps in the draining equipment (4), and the universal control functional module (6) is connected with the man-machine interaction device (7).
2. The drain pump modular start-stop control system with unified pump stop liquid level according to claim 1, wherein: the utility model provides a drainage system control parameter that human-computer interaction device (7) is connected through communication loop (9) to general control function module (6), general control function module (6) accept the drainage system control parameter that human-computer interaction device (7) set up through communication loop (9), including start-stop parameter, pump station parameter, rotation parameter, and according to the pump running state, pump fault state, the automatic state of pump hand, the running number of times of pump through electric loop (8) receiving drainage tank (1) liquid level and drainage equipment (4) of gathering, after the running time of pump carries out logical processing, carry out automatic control through electric loop (8) to n drain pumps in drainage equipment (4), simultaneously transmit drainage system state parameter information to human-computer interaction device (7) through communication loop (9).
3. The drain pump modular start-stop control system with unified pump stop liquid level according to claim 2, wherein:
the start-stop parameters include: level 0 main pump set starting level H 0 Starting level H of 1-stage backup pump unit 1 … … m-level backup pump set starting level H m The stop liquid level of the main pump group and each stage of pump group is the same as H 0 'A'; wherein H is 0 ’<H 0 <H 1 <H 2 <……<H m ；
The pump station parameters include: the total number N of drainage pumps of the drainage system and the number N of drainage pumps of the main pump group 0 Number N of drainage pumps of 1-stage pump group 1 Number N of drainage pumps of … … m-level standby pump unit m ；
The rotation parameters include: a pump fault state weight value a; a manual state weight value b of the pump; a weight value c of the number of pump operations; a weight value d of the pump run time; the pump operating state weight e.
4. The drain pump modular start-stop control system with unified pump stop liquid level according to claim 1, wherein:
the functions of the general control function module (6) comprise a pump starting quantity calculation module (10), a rotation sequencing module (11) and a pump starting and stopping control module (12);
the pump starting quantity calculating module (10) is used for controlling parameters according to a drainage system: the start-stop parameters, the pump station parameters and the liquid level H of the drainage tank (1) are calculated by adopting a start-pump quantity calculation method, and the start-pump quantity x is output to a start-stop pump control module (12);
the rotation sequencing module (11) is used for sequencing all the pump multiple working condition factor state signals of the drainage system according to rotation parameters: the pump running state, the pump fault state, the pump hand automatic state, the pump running times, the pump running time and the like of the drainage equipment (4) adopt a priority wheel switching sequence method, and output a switching sequence to the start-stop pump control module (12);
the start-stop pump control module (12) receives information such as the start-up number x output by the start-up number calculation module (10), a rotation sequence output by the rotation sequencing module (11) and the like, and outputs a drainage pump start-stop control signal to the drainage equipment (4) by adopting a start-stop pump control method according to state signals of various working condition factors of all pumps of the drainage system.
5. The method for calculating the start-up quantity of the drainage pump is characterized by comprising the following steps of:
step 1, acquiring parameters H, H by a pump starting quantity calculation module (10) 0 、H 0 ’、H 1 ……H m 、N、N 0 、N 1 ……N m Step 2, entering a step 2; meaning of each parameter representation referred to in step 1: level 0 main pump set starting level H 0 Starting level H of 1-stage backup pump unit 1 … … m-level backup pump set starting level H m The stop liquid level of the main pump group and each stage of pump group is the same as H 0 'A'; wherein H is 0 ’<H 0 <H 1 <H 2 <……<H m ；
Step 2, a pump starting quantity calculating module (10) detects whether H is detected>H 0 If yes, x=n 0 Step 3, entering a step; if not, entering a step 3;
step 3The pump starting quantity calculating module (10) detects whether H is the same as the pump starting quantity>H 1 If yes, x=n 0 +N 1 Step 4, entering a step; if not, entering a step 4;
……
step m+2, a pump starting quantity calculating module (10) detects whether H is detected>H m If yes, x=n 0 +N 1 +……+N m Step m+3; if not, entering the m+3 step;
step m+3, detecting whether H is detected by a pump starting quantity calculating module (10)<H 0 ' if yes, x=0, go to the m+4 step; if not, directly entering the (m+4) th step;
and step m+4, outputting x by the pump starting quantity calculating module (10), and returning to the step 1.
6. The method for calculating the start-up quantity of the drainage pump according to claim 5, wherein:
when m=0, namely the control system only has a main pump group and no 1-m-level standby pump group, the method for calculating the number of pumps is specifically comprised of 4 steps in total, wherein the m+2th step is the 2 nd step, the m+3rd step is the 3 rd step, and the m+4th step is the 4 th step;
when m=1, namely, the control system only has a main pump group and 1-stage standby pump group and no 2-m-stage standby pump group, the method for calculating the number of pumps is specifically comprised of 4 steps in total, wherein the m+2 step is the 3 rd step, the m+3 step is the 4 th step, and the m+4 step is the 5 th step;
when m=2, namely, the control system only has a main pump group, a 1-stage standby pump group and a 2-stage standby pump group and no 3-m-stage standby pump group, the method for calculating the starting pump quantity specifically comprises 4 steps in total, wherein the m+2th step is the 4 th step, the m+3rd step is the 5 th step, and the m+4th step is the 6 th step.
7. The drainage pump priority wheel change sequencing method is characterized by comprising the following steps of:
step 1: the rotation sequencing module (11) collects the total number N of drainage pumps of the drainage system;
step 2: the rotation sequencing module (11) collects state signals of various working condition factors of all pumps, and calculates and determines various working condition values of all pumps;
in the step 2, the multiple working condition factors include: pump running state, pump fault state, pump hand automatic state, pump running times, pump running time;
according to various working condition factors, the various working condition values of all pumps are determined as follows:
in all pumps, if the pump is in an operating state, the working condition value V takes a value of 1; if the pump is in a non-running state, the value of the working condition value V is 0; let the working condition value of the n-type pump be V n The method comprises the steps of carrying out a first treatment on the surface of the Wherein N > 1;
in all pumps, if the pump is in a non-fault state, the working condition value X takes a value of 1; if the pump cannot work normally, the value of the working condition value X is 0; let the working condition value of the n-type pump be X n The method comprises the steps of carrying out a first treatment on the surface of the Wherein N > 1;
in all pumps, if the manual and automatic state of the pump is 'automatic', the state working condition value Y takes a value of 1; if the manual and automatic state of the pump is manual, the working condition value Y of the state is 0; the reason for this is that the manual status of the pump is set to "automatic" with a higher priority than "manual"; let the working condition value of the n-type pump be Y n The method comprises the steps of carrying out a first treatment on the surface of the Wherein N > 1;
in all pumps, according to the operation state of the pump, the number of rising edges of the operation state of the pump can be counted to obtain the operation times of the pump, the operation times of the pump are ordered, and the operation times of the pump are sequentially valued to be 1,2 … N … N-1 and N from the high to the low corresponding operation times of the pump working condition value Z; wherein N > 1; setting the frequency working condition value of the n-number pump as Z n ；
In all pumps, according to the running state of the pump, the running state accumulated duration time of the pump can be timed to obtain the running time of the pump, the running time of the pump is sequenced, and the time is sequentially 1,2 … N … N-1 and N from the long to the short corresponding pump times working condition value U; wherein N is equal to or greater than N is equal to or greater than 1; let the number of times working condition value of n-number pump be U n ；
Step 3: the rotation sequencing module (11) collects weight values of various working condition factors of all pumps;
step 4: the rotation sequencing module (11) calculates the priority score of each pump according to the working condition values corresponding to various working condition factors of all pumps and the corresponding weight values;
in the step 4, the priority score m=ax+by+cz+du+ev of each pump is calculated; priority score M for pump n n ＝aX n +bY n +cZ n +dU n +eV n ；
Step 5: the rotation sequencing module (11) sequences the priority of all pumps in the system according to the priority score of each pump, and obtains a corresponding pump number sequence array according to the priority of the pumps from high to low;
in the step 5, according to M n Is prioritized by the size of the pumps, and the priority score M of the n-number pump n The larger the priority, the higher the priority, the more front the pump number n is arranged in the queue
Then the priority of the pump is from high to low, corresponding to the pump number sequence: { n 1 ，n 2 ，……，n N-1 ，n N ' record as a group team [ N ]]；
Step 6: the rotation sequencing module (11) outputs a pump number sequence array;
in the step 6, a pump number sequence is output: { n 1 ，n 2 ，……，n N-1 ，n N "array team [ N ]]；
Step 7: the rotation sequencing module (11) detects the running states of all pumps, and if the pumps stop running, the step 2 is returned.
8. The drain pump priority wheel shift sequencing method according to claim 7, wherein:
in the step 3, a fault state weight value a of the set pump is collected; a manual state weight value b of the pump; a weight value c of the number of pump operations; a weight value d of the pump run time; an operating state weight value e of the pump;
the user sets weight values corresponding to various working condition factors according to the self requirements, and the more important the working condition factors are, the greater the influence is, and the greater the weight is; in order to ensure normal functions, the essential working condition factors include the running state of the pump, the pump failure state and the automatic state of the pump hand, and e is more than a and more than b; if the start and stop are controlled only according to the operation times of the pump, e > a > b > c > d=0; if start-stop is controlled only according to the running time of the pump, e > a > b > d > c=0; if the start and stop are controlled according to the operation times and the operation time of the pump and preferentially according to the operation times of the pump, e > a > b > c > d >0; if the start-stop is controlled according to the operation times and the operation time of the pump and preferentially according to the operation time of the pump, e > a > b > d > c >0.
9. A method for controlling the start-stop of a drainage pump is characterized by comprising the following steps:
1. a start-stop pump control module (12) collects the pump number sequences team [ N ], x and the running state of the pump, and enters step 2;
2. starting all pumps in a non-running state in all pumps with the first x elements in the pump number of team [ N ]; expressed in language C-like form:
for(j＝0，j<x,j++)
{
if (the team [ j ] pump is in a non-running state) starts the team [ j ] pump;
}
then enter step 3;
3. after excluding the pumps with the first x elements of the pump number team [ N ], stopping all the pumps in the running state in all the remaining pumps; expressed in language C-like form:
for(j＝x，j<N,j++)
{
if (team [ j ] pump is in run state) stops team [ j ] pump;
}
then returning to the step 1;
wherein j is an intermediate control variable and is a natural number.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117350468A (en) * | 2023-09-07 | 2024-01-05 | 长江生态环保集团有限公司 | Centralized control mode-based scheduling method for regulation and storage pool system |
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| CN110985362A (en) * | 2019-11-06 | 2020-04-10 | 中水淮河规划设计研究有限公司 | Intelligent alternate working method for leakage drainage pump of pump station |
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