CN118273933B - Intelligent pressure compensation control system and method for pump body - Google Patents

Abstract

The present invention discloses a pressure intelligent compensation control system and method for a pump body, relates to the field of pump bodies, solves the problem of incomplete analysis of pump body pressure compensation requirements, comprises a data acquisition module, an energy analysis module, a delivery monitoring module, a blockage analysis module, a configuration control terminal and a compensation control terminal, wherein the data acquisition module is used to acquire fluid characteristic data of a fluid medium and pipeline segment data of a delivery pipeline, the energy analysis module is used to analyze the energy supply demand level of the delivery pipeline, the configuration control terminal is used to adjust the pump body configuration, the delivery monitoring module is used to monitor the segment inlet pressure and the segment outlet pressure of each pipeline segment, the blockage analysis module is used to analyze the pipeline blockage state of each pipeline segment and the connection blockage state of the corresponding connecting pipe fittings of the pipeline segment, and the compensation control terminal is used to control the pressure compensation of the pump body connected to the delivery pipeline, and the present invention realizes intelligent pump body configuration switching and pipeline pressure compensation.

Description

A pressure intelligent compensation control system and method for a pump body

Technical Field

The present invention belongs to the field of pump bodies and relates to a pressure compensation control technology, in particular to a pressure intelligent compensation control system and method for a pump body.

Background Art

Pressure compensation control is a control technology for pumps that aims to maintain a stable pressure in the system. In hydraulic systems, pumps are usually used to provide fluid energy to push hydraulic cylinders or perform other work. Pressure compensation control automatically adjusts the output flow of the pump to compensate for changes in system pressure. It is usually based on a feedback loop to sense the pressure in the system and adjust the flow output of the pump accordingly to maintain the set pressure level. Common pump pressure compensation control includes pressure sensors, control valves, control algorithms, pump adjustments, and feedback loops. Pressure compensation control is widely used in many hydraulic applications, such as industrial machinery, hydraulic machine tools, lifting equipment, etc.

Under the current technical background, pipeline transportation usually uses various pumps as power sources. Due to the characteristics of the transported materials and the composition characteristics of the pipeline materials, it is necessary to select a suitable pump to ensure the normal operation of the transportation operation. When performing pressure compensation, the existing pumps often fail to consider the characteristics of the pipeline and the transported materials to perform compensation demand analysis. For example, corrosive liquids cause pipeline leakage or high-viscosity liquids cause pipeline blockage, resulting in invalid pressure compensation.

To this end, we propose a pressure intelligent compensation control system and method for a pump body.

Summary of the invention

In view of the deficiencies in the prior art, an object of the present invention is to provide a pressure intelligent compensation control system and method for a pump body.

The technical problems to be solved by the present invention are:

How to achieve intelligent switching control of pump configuration and intelligent compensation control of pipeline pressure based on the characteristics of pipeline and transported materials.

In order to achieve the above object, the present invention adopts the following technical solutions:

In the first aspect, a pressure intelligent compensation control system for a pump body includes a data acquisition module, an energy analysis module, a delivery monitoring module, a blockage analysis module, a configuration control terminal, a compensation control terminal and a server;

The data acquisition module is used to acquire the fluid characteristic data of the fluid medium in the conveying pipeline and send it to the energy analysis module via the server. The data acquisition module is also used to acquire the pipeline segment data of the conveying pipeline and send it to the energy analysis module and the obstruction analysis module via the server.

The energy analysis module is used to analyze the pressure energy provided by the pump body corresponding to the delivery pipeline, and the energy supply demand level of the delivery pipeline obtained by the analysis is sent to the configuration control terminal via the server;

The configuration control terminal performs adjustment and control of the pump body configuration according to the energy supply demand level;

The transport monitoring module is used to monitor the transport status of the transport pipeline in real time, and the segment inlet pressure and segment outlet pressure of each pipeline segment obtained by monitoring are sent to the blockage analysis module via the server;

The blocking analysis module is used to analyze the pipeline blocking situation of the transmission pipeline, and the pipeline blocking status of each pipeline segment and the connection blocking status of the connecting pipe corresponding to the pipeline segment are obtained through the server and sent to the compensation control terminal;

The data acquisition module also collects the fluid inlet hydraulic pressure at the medium container connected to the delivery pipeline and sends it to the compensation control terminal;

The compensation control terminal is used to perform compensation control on the pressure of the pump body connected to the delivery pipeline.

Further, the fluid characteristic data includes the fluid density and fluid viscosity of the fluid medium in the delivery pipeline;

The pipeline segment data includes the pipeline length, pipeline diameter, absolute roughness of the pipe wall of each pipeline segment in the transmission pipeline, and the pipe resistance coefficient of the corresponding connecting pipe fittings of each pipeline segment.

Furthermore, the analysis process of the energy analysis module is as follows:

Obtain the fluid density of the fluid medium in the conveying pipeline and the pipeline length and pipeline diameter of the pipeline segment in the conveying pipeline, and calculate the fluid conveying energy supply of the conveying pipeline;

Obtain the fluid viscosity of the fluid medium in the conveying pipeline, and then obtain the absolute roughness of the pipe wall of the pipe segment in the conveying pipeline and the pipe resistance coefficient of the corresponding connecting pipe fittings of the pipe segment, and calculate the resistance compensation energy supply of the conveying pipeline;

The energy demand value of the conveying pipeline is calculated by adding the fluid conveying energy and the resistance compensation energy of the conveying pipeline;

Comparing the energy demand value of the transmission pipeline with the energy demand threshold;

If the energy supply demand value is less than or equal to the first energy supply demand threshold, the energy supply demand level of the transmission pipeline is determined to be the first energy supply demand level;

If the energy supply demand value is greater than the first energy supply demand threshold and less than or equal to the second energy supply demand threshold, then the energy supply demand level of the transmission pipeline is determined to be the second energy supply demand level;

If the energy supply demand value is greater than the second energy supply demand threshold, the energy supply demand level of the transmission pipeline is determined to be the third energy supply demand level.

Furthermore, the first energy supply demand threshold and the second energy supply demand threshold are both greater than zero, the first energy supply demand threshold is less than the second energy supply demand threshold, the pressure energy demand of the first energy supply demand level is lower than the pressure energy demand of the second energy supply demand level, and the pressure energy demand of the second energy supply demand level is lower than the pressure energy demand of the third energy supply demand level.

Furthermore, the working process of the configuration control terminal is as follows:

If the energy supply demand level of the transportation system is the first energy supply demand level, the parameter configuration of the pump body corresponding to the transportation pipeline is switched to the first pump body head and the first pump body efficiency;

If the energy supply demand level of the transportation system is the second energy supply demand level, the parameter configuration of the pump body corresponding to the transportation pipeline is switched to the second pump body head and the second pump body efficiency;

If the energy supply demand level of the transportation system is the third energy supply demand level, the parameter configuration of the pump body corresponding to the transportation pipeline is switched to the third pump body head and the third pump body efficiency;

Among them, the value of the first pump body head is smaller than the value of the second pump body head, the value of the second pump body head is smaller than the value of the third pump body head, the value of the first pump body efficiency is smaller than the value of the second pump body efficiency, and the value of the second pump body efficiency is smaller than the value of the third pump body efficiency.

Furthermore, the analysis process of the blocking analysis module specifically includes:

Obtain the segment inlet pressure, segment outlet pressure and pipeline length of each pipeline segment in the transmission pipeline;

Calculating a pipeline pressure loss coefficient of a pipeline segment in the transmission pipeline, and comparing the pipeline pressure loss coefficient of each pipeline segment in the transmission pipeline with a pipeline pressure loss threshold;

If the pipeline pressure loss coefficient is less than or equal to the first pipeline pressure loss threshold, the pipeline blocking state of the pipeline segment is determined to be unblocked;

If the pipeline pressure loss coefficient is greater than the first pipeline pressure loss threshold and less than or equal to the second pipeline pressure loss threshold, it is determined that the pipeline blockage state of the pipeline segment is slightly blocked;

If the pipeline pressure loss coefficient is greater than the second pipeline pressure loss threshold, it is determined that the pipeline blockage state of the pipeline segment is severe blockage.

Furthermore, the analysis process of the blocking analysis module also includes:

Obtain the pipe resistance coefficient of the connecting pipe corresponding to the pipeline segment, calculate the connection pressure loss coefficient of the connecting pipe corresponding to each pipeline segment in the transmission pipeline, and compare the connection pressure loss coefficient of the connecting pipe corresponding to the pipeline segment with the connection pressure loss critical value;

If the connection pressure loss coefficient is less than the connection pressure loss critical value, the connection blocking state of the corresponding connecting pipe of the pipeline segment is determined to be unblocked;

If the connection pressure loss coefficient is greater than or equal to the connection pressure loss critical value, the connection blocking state of the connecting pipe corresponding to the pipeline segment is determined to be blocked.

Further, the values of the first pipeline pressure loss threshold and the second pipeline pressure loss threshold are both greater than zero, the first pipeline pressure loss threshold is less than the second pipeline pressure loss threshold, and the value of the pressure loss critical value is greater than zero.

Furthermore, the compensation control process of the compensation control terminal is specifically as follows:

Obtain the fluid inlet hydraulic pressure of the medium container, compare the fluid inlet hydraulic pressure of the medium container with the standard hydraulic range, and simultaneously obtain the pipeline blocking state of each pipeline segment and the connection blocking state of the corresponding connecting pipe fittings of the pipeline segment;

If the fluid inlet hydraulic pressure of the medium container belongs to the standard hydraulic pressure range, no operation is performed;

If the fluid inlet hydraulic pressure of the medium container does not belong to the standard hydraulic range;

When the connection blocking state of the corresponding connecting pipe of the pipeline segment is unblocked, and the pipeline blocking state of the pipeline segment is slightly blocked, the pump efficiency is adaptively adjusted based on the standard hydraulic range;

When the connection blocking status of the connecting pipe corresponding to the pipeline segment is unblocked, and the pipeline blocking status of the pipeline segment is severely blocked, the staff will be immediately arranged to go to the pipeline segment to perform pipeline dredging operations;

When the connection blockage status of the connecting pipe corresponding to the pipeline segment is blocked, and the pipeline blockage status of the pipeline segment is slightly blocked, the pump efficiency is adaptively adjusted based on the standard hydraulic interval, and the connecting pipe of the pipeline segment is unblocked during the regular maintenance period;

When the connection blocking status of the connecting pipe fittings corresponding to the pipeline segment is blocked, and the pipeline blocking status of the pipeline segment is severely blocked, staff will be immediately arranged to go to the pipeline segment to clear the pipeline and connecting pipe fittings.

In a second aspect, a pressure intelligent compensation control method for a pump body comprises the following steps:

Step S101, the data acquisition module acquires the fluid characteristic data of the fluid medium in the conveying pipeline and sends it to the energy analysis module. The data acquisition module also acquires the pipeline segment data of the conveying pipeline and sends it to the energy analysis module and the blockage analysis module;

Step S102, the energy analysis module analyzes the pressure energy provided by the pump body corresponding to the delivery pipeline, and sends the energy supply demand level of the delivery pipeline obtained by the analysis to the configuration and control terminal, and the configuration and control terminal adjusts and controls the pump body configuration according to the energy supply demand level;

Step S103, the transport monitoring module monitors the transport status of the transport pipeline in real time, and obtains the segment inlet pressure and segment outlet pressure of each pipeline segment and sends them to the blockage analysis module;

Step S104, the blocking analysis module analyzes the pipeline blocking condition of the transmission pipeline, obtains the pipeline blocking status of each pipeline segment and the connection blocking status of the connecting pipe corresponding to the pipeline segment, and sends them to the compensation control terminal;

Step S105, the data acquisition module collects the fluid inlet hydraulic pressure at the medium container connected to the delivery pipeline and sends it to the compensation control terminal, and the compensation control terminal performs compensation control on the pressure of the pump body connected to the delivery pipeline.

In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

1. The present invention first obtains the fluid characteristic data of the fluid medium in the conveying pipeline through the data acquisition module and sends it to the energy analysis module. At the same time, the data acquisition module also obtains the pipeline segment data of the conveying pipeline and sends it to the energy analysis module and the blockage analysis module. Then, the energy analysis module is used to analyze the pressure energy provided by the pump body corresponding to the conveying pipeline to obtain the energy supply demand level of the conveying pipeline and send it to the configuration control terminal. Then, the configuration control terminal adjusts and controls the pump body configuration according to the energy supply demand level. The present invention realizes the intelligent switching of the pump body configuration;

2. The present invention utilizes a delivery monitoring module to perform real-time monitoring of the delivery conditions of the delivery pipeline, obtains the segment inlet pressure and the segment outlet pressure of each pipeline segment and sends them to a blockage analysis module, and then analyzes the pipeline blockage conditions of the delivery pipeline through the blockage analysis module, obtains the pipeline blockage status of each pipeline segment and the connection blockage status of the corresponding connecting pipes of the pipeline segment and sends them to a compensation control terminal. At the same time, the data acquisition module also collects the fluid inlet hydraulic pressure at the medium container connected to the delivery pipeline and sends it to the compensation control terminal. Finally, the pressure of the pump body connected to the delivery pipeline is compensated and controlled through the compensation control terminal. The present invention realizes intelligent compensation of pipeline pressure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

FIG1 is a block diagram of the overall system of the present invention;

Fig. 2 is a connection diagram of the present invention;

FIG3 is a schematic diagram of the principle of the data acquisition module in the present invention;

FIG4 is a schematic diagram of the principle of the transport monitoring module in the present invention;

FIG5 is a flow chart of the method of the present invention.

DETAILED DESCRIPTION

The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1: Referring to FIGS. 1-4 , the present invention provides a pressure intelligent compensation control system for a pump body, including a data acquisition module, an energy analysis module, a delivery monitoring module, a blocking analysis module, a configuration control terminal, a compensation control terminal and a server;

In this embodiment, the pump body is applied to various conveying systems. As shown in FIG2 , the conveying system is specifically a pipeline transportation system for conveying fluid media, such as a water pipeline, an oil pipeline or a hydraulic pipeline. In this embodiment, the conveying system is described by a conveying pipeline. The fluid medium includes a liquid medium and a gas medium. Common liquid media include water, oil, liquid chemical raw materials, etc. Common gas media include natural gas, air, pure oxygen, etc. The medium container is used to store the fluid medium. The pump body is connected to each medium container through a conveying pipeline, and the conveying and transfer of the fluid medium between the medium containers are realized through pumping in and pumping out operations.

Please refer to FIG. 3 , the data acquisition module is used to acquire the fluid characteristic data of the fluid medium in the delivery pipeline and the pipeline segment data of the delivery pipeline. The fluid characteristic data is the fluid density and fluid viscosity of the fluid medium in the delivery pipeline. In this embodiment, the fluid density is based on the value included in the commonly used liquid standard density table. When the fluid medium is not included in the commonly used liquid density table, the fluid density is obtained by a densitometer or a fluid density measuring instrument, and the fluid viscosity of the fluid medium is obtained by a viscometer.

As shown in FIG3 , the transport pipeline is divided into multiple pipeline segments according to the connecting pipe fittings. The pipeline segment data includes the pipeline length, pipeline diameter, absolute roughness of the pipe wall, and the pipe resistance coefficient of the connecting pipe fittings corresponding to each pipeline segment in the transport pipeline. The connecting pipe fittings corresponding to the pipeline segment are the connecting pipe fittings installed at the segment outlet of the pipeline segment.

In this embodiment, the absolute roughness value of the pipe wall of each pipe segment in the transmission pipeline can refer to the absolute roughness approximate value table of industrial pipes, and the absolute roughness approximate value table of industrial pipes is as follows:

At the same time, the pipe resistance coefficient of the connecting pipe is shown in the pipe resistance coefficient table. The pipe resistance coefficient table is as follows:

The data acquisition module sends the fluid property data of the fluid medium to the server, and the server sends the fluid property data of the fluid medium to the energy analysis module. The data acquisition module also sends the pipeline segment data of the transport pipeline to the server, and the server sends the pipeline segment data of the transport pipeline to the energy analysis module and the obstruction analysis module.

The energy analysis module is used to analyze the pressure energy provided by the pump body corresponding to the delivery pipeline. The specific analysis process is as follows:

Obtain the fluid density LM of the fluid medium in the conveying pipeline and the pipeline length CDi and pipeline diameter GJi of the pipeline segment in the conveying pipeline, where i is the sequence number of the pipeline segment, i is a non-zero natural number, and the upper limit value of i is n, which is equal to the number of pipeline segments in the conveying pipeline. It can be understood that the smaller the value of i is, the closer the pipeline segment is to the inlet of the conveying pipeline, and the larger the value of i is, the closer the pipeline segment is to the outlet of the conveying pipeline;

The fluid transport energy supply SS of the transport pipeline is calculated according to the formula, which is as follows:

;

Among them, g is the standard gravitational acceleration, and the fluid transportation energy supply reflects the amount of work done by the fluid medium to overcome gravity during the transportation process. The work done by the fluid medium to overcome gravity is supplied by the pump body;

Obtain the fluid viscosity LN of the fluid medium in the conveying pipeline, and then obtain the absolute roughness CCi of the pipe wall of the pipe segment in the conveying pipeline and the pipe resistance coefficient ZLi of the connecting pipe corresponding to the pipe segment;

The resistance compensation energy supply BC of the transmission pipeline is calculated according to the formula, which is as follows:

;

Among them, z1 and z2 are proportional coefficients with fixed values, and the values of z1 and z2 are both greater than zero. It can be understood that the larger the pipeline length and pipeline diameter of the pipeline segment, the larger the contact area between the fluid medium and the pipe wall, the greater the absolute roughness of the conveying pipeline, and the greater the resistance encountered by the fluid medium during the conveying process. Similarly, the larger the pipe resistance coefficient of the connecting pipe, the greater the resistance encountered by the fluid medium when passing through the connecting pipe, that is, the greater the work done by the fluid medium to overcome the resistance, and the work done by the fluid medium to overcome the resistance is powered by the pump body;

The energy demand value of the conveying pipeline is calculated by adding the fluid conveying energy and the resistance compensation energy of the conveying pipeline;

Comparing the energy demand value of the transmission pipeline with the energy demand threshold;

If the energy supply demand value is less than or equal to the first energy supply demand threshold, the energy supply demand level of the transmission pipeline is determined to be the first energy supply demand level;

If the energy supply demand value is greater than the first energy supply demand threshold and less than or equal to the second energy supply demand threshold, then the energy supply demand level of the transmission pipeline is determined to be the second energy supply demand level;

If the energy supply demand value is greater than the second energy supply demand threshold, the energy supply demand level of the transmission pipeline is determined to be the third energy supply demand level;

Wherein, the first energy supply demand threshold and the second energy supply demand threshold are both greater than zero, the first energy supply demand threshold is less than the second energy supply demand threshold, the pressure energy demand of the first energy supply demand level is lower than the pressure energy demand of the second energy supply demand level, and the pressure energy demand of the second energy supply demand level is lower than the pressure energy demand of the third energy supply demand level;

The energy analysis module sends the energy supply demand level of the transmission pipeline to the server, and the server sends the energy supply demand level of the transmission pipeline to the configuration and control terminal;

The configuration control terminal adjusts and controls the pump configuration according to the energy supply demand level, and the working process is as follows:

If the energy supply demand level of the transportation system is the first energy supply demand level, the parameter configuration of the pump body corresponding to the transportation pipeline is switched to the first pump body head and the first pump body efficiency;

If the energy supply demand level of the transportation system is the second energy supply demand level, the parameter configuration of the pump body corresponding to the transportation pipeline is switched to the second pump body head and the second pump body efficiency;

If the energy supply demand level of the transportation system is the third energy supply demand level, the parameter configuration of the pump body corresponding to the transportation pipeline is switched to the third pump body head and the third pump body efficiency;

In this embodiment, the parameter configuration of the delivery pipeline corresponding to the pump body is switched by replacing the pump body connected to the delivery pipeline;

Among them, the value of the first pump head is smaller than the value of the second pump head, the value of the second pump head is smaller than the value of the third pump head, the value of the first pump efficiency is smaller than the value of the second pump efficiency, and the value of the second pump efficiency is smaller than the value of the third pump efficiency. For example, in this embodiment, the values of the first pump head, the second pump head and the third pump head are specifically 10m, 20m, 50m, and the values of the first pump efficiency, the second pump efficiency and the third pump efficiency are specifically 25W, 30W, 55W;

It should be specifically stated that the pump head is the energy obtained by the unit mass of the fluid medium after passing through the pump body. In the actual working process, it is manifested as the maximum height that the liquid column can reach after the fluid medium passes through the pump body. The pump efficiency is the effective power of the power components such as the impeller, shaft, and magnetic shaft in the pump body;

As a further solution of the present invention, please refer to FIG. 4 , the transport monitoring module is used to monitor the transport status of the transport pipeline in real time, and the monitoring process is as follows:

As shown in FIG4 , with the conveying direction of the fluid medium as the positive direction, the fluid medium inflow end of each pipeline segment is marked as the segment inlet, and the fluid medium outflow end of each pipeline segment is marked as the segment outlet, and the segment inlet pressure and segment outlet pressure of each pipeline segment are monitored in real time. In this embodiment, the segment inlet pressure and segment outlet pressure of each pipeline segment are obtained by a hydraulic pressure sensor or a pneumatic pressure sensor arranged at the segment inlet and the segment outlet of each pipeline segment;

The transport monitoring module sends the segment inlet pressure and the segment outlet pressure of each pipeline segment to the server, and the server sends the segment inlet pressure and the segment outlet pressure of each pipeline segment to the blockage analysis module;

The blocking analysis module is used to analyze the blocking condition of the pipeline. The specific analysis process is as follows:

Obtain the segment inlet pressure RKi, segment outlet pressure CKi and pipeline length CDi of each pipeline segment in the transmission pipeline;

The pipeline pressure loss coefficient YSi of the pipeline segment in the transmission pipeline is calculated according to the formula. The specific formula is as follows:

YSi=（CKi-RKi）/CDi;

Compare the pipeline pressure loss coefficient of each pipeline segment in the transmission pipeline with the pipeline pressure loss threshold;

If the pipeline pressure loss coefficient is less than or equal to the first pipeline pressure loss threshold, the pipeline blocking state of the pipeline segment is determined to be unblocked;

If the pipeline pressure loss coefficient is greater than the first pipeline pressure loss threshold and less than or equal to the second pipeline pressure loss threshold, it is determined that the pipeline blockage state of the pipeline segment is slightly blocked;

If the pipeline pressure loss coefficient is greater than the second pipeline pressure loss threshold, it is determined that the pipeline blockage state of the pipeline segment is severe blockage;

Wherein, the values of the first pipeline pressure loss threshold and the second pipeline pressure loss threshold are both greater than zero, and the first pipeline pressure loss threshold is less than the second pipeline pressure loss threshold;

Obtain the pipe resistance coefficient ZLi of the connecting pipes corresponding to the pipeline segments, and calculate the connection pressure loss coefficient LSi of the connecting pipes corresponding to each pipeline segment in the transmission pipeline according to the formula. The specific formula is as follows:

LSi= (RKi+1-CKi)/ZLi;

Compare the connection pressure loss coefficient of the corresponding connecting pipe fittings of the pipeline segment with the critical value of the connection pressure loss;

If the connection pressure loss coefficient is less than the connection pressure loss critical value, the connection blocking state of the corresponding connecting pipe of the pipeline segment is determined to be unblocked;

If the connection pressure loss coefficient is greater than or equal to the connection pressure loss critical value, the connection blocking state of the corresponding connecting pipe of the pipeline segment is determined to be blocked;

Among them, the value of the critical value of pressure loss is greater than zero;

The blocking analysis module sends the pipeline blocking status of each pipeline segment and the connection blocking status of the connecting pipe corresponding to the pipeline segment to the server, and the server sends the pipeline blocking status of each pipeline segment and the connection blocking status of the connecting pipe corresponding to the pipeline segment to the compensation control terminal;

The data acquisition module collects the fluid inlet hydraulic pressure at the medium container connected to the delivery pipeline, and sends the fluid inlet hydraulic pressure to the server, and the server sends the fluid inlet hydraulic pressure to the compensation control terminal, and the compensation control terminal is used to compensate and control the pressure of the pump body connected to the delivery pipeline. The compensation control process is as follows:

The fluid inlet hydraulic pressure of the medium container is obtained by a flow meter arranged at the inlet of the medium container, the fluid inlet hydraulic pressure of the medium container is compared with the standard hydraulic range, and the pipeline blocking state of each pipeline segment and the connection blocking state of the corresponding connecting pipe fittings of the pipeline segment are obtained at the same time;

If the fluid inlet hydraulic pressure of the medium container belongs to the standard hydraulic pressure range, no operation is performed;

If the fluid inlet hydraulic pressure of the medium container does not belong to the standard hydraulic range;

When the connection blocking state of the corresponding connecting pipe of the pipeline segment is unblocked, and the pipeline blocking state of the pipeline segment is slightly blocked, the pump efficiency is adaptively adjusted based on the standard hydraulic range;

When the connection blocking status of the connecting pipe corresponding to the pipeline segment is unblocked, and the pipeline blocking status of the pipeline segment is severely blocked, the staff will be immediately arranged to go to the pipeline segment to perform pipeline dredging operations;

When the connection blockage status of the connecting pipe corresponding to the pipeline segment is blocked, and the pipeline blockage status of the pipeline segment is slightly blocked, the pump efficiency is adaptively adjusted based on the standard hydraulic interval, and the connecting pipe of the pipeline segment is unblocked during the regular maintenance period;

When the connection blocking state of the connecting pipe fittings corresponding to the pipeline segment is blocked, and the pipeline blocking state of the pipeline segment is severely blocked, the staff will be immediately arranged to go to the pipeline segment to clear the pipeline and connecting pipe fittings;

In this application, if corresponding calculation formulas appear, the above calculation formulas are all dimensionless and take their numerical calculations. The weight coefficients, proportional coefficients and other coefficients in the formulas are set to a result value obtained by quantifying each parameter. The size of the weight coefficient and the proportional coefficient can be determined as long as it does not affect the proportional relationship between the parameter and the result value.

Embodiment 2: Referring to FIG. 5 , based on another concept of the same invention, a pressure intelligent compensation control method for a pump body is proposed, comprising the following steps:

Step S101, the data acquisition module acquires the fluid characteristic data of the fluid medium in the conveying pipeline and sends it to the energy analysis module. The data acquisition module also acquires the pipeline segment data of the conveying pipeline and sends it to the energy analysis module and the blockage analysis module;

Step S102, the energy analysis module analyzes the pressure energy provided by the pump body corresponding to the delivery pipeline, and sends the energy supply demand level of the delivery pipeline obtained by the analysis to the configuration and control terminal, and the configuration and control terminal adjusts and controls the pump body configuration according to the energy supply demand level;

Step S103, the transport monitoring module monitors the transport status of the transport pipeline in real time, and obtains the segment inlet pressure and segment outlet pressure of each pipeline segment and sends them to the blockage analysis module;

Step S104, the blocking analysis module analyzes the pipeline blocking condition of the transmission pipeline, obtains the pipeline blocking status of each pipeline segment and the connection blocking status of the connecting pipe corresponding to the pipeline segment, and sends them to the compensation control terminal;

Step S105, the data acquisition module collects the fluid inlet hydraulic pressure at the medium container connected to the delivery pipeline and sends it to the compensation control terminal, and the compensation control terminal performs compensation control on the pressure of the pump body connected to the delivery pipeline.

The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The intelligent pressure compensation control system for the pump body is characterized by comprising a data acquisition module, an energy analysis module, a conveying monitoring module, a blocking analysis module, a configuration regulation terminal, a compensation control terminal and a server;

The data acquisition module is used for acquiring fluid characteristic data of a fluid medium in the conveying pipeline, the fluid characteristic data are sent to the energy analysis module through the server, the data acquisition module is also used for acquiring pipeline section data of the conveying pipeline, and the pipeline section data are sent to the energy analysis module and the blocking analysis module through the server;

The energy analysis module is used for analyzing the pressure energy provided by the corresponding pump body of the conveying pipeline, analyzing to obtain the energy supply requirement grade of the conveying pipeline, and sending the energy supply requirement grade to the configuration regulation terminal through the server; the configuration regulation terminal carries out regulation control on pump body configuration according to the energy supply demand level;

The conveying monitoring module is used for monitoring the conveying condition of the conveying pipeline in real time, monitoring to obtain the segment inlet pressure and the segment outlet pressure of each pipeline segment, and sending the segment inlet pressure and the segment outlet pressure to the blockage analysis module through the server;

The blockage analysis module is used for analyzing the pipeline blockage situation of the conveying pipeline, analyzing to obtain pipeline blockage states of all pipeline sections and connecting blockage states of corresponding connecting pipes of the pipeline sections, and sending the pipeline blockage states to the compensation control terminal through the server; the data acquisition module is also used for acquiring fluid inlet hydraulic pressure at a medium container connected with the conveying pipeline, and the fluid inlet hydraulic pressure is sent to the compensation control terminal through the server;

The analysis process of the blocking analysis module specifically comprises the following steps:

acquiring segment inlet pressure, segment outlet pressure and pipeline length of each pipeline segment in the conveying pipeline;

Calculating pipeline pressure loss coefficients of pipeline segments in a conveying pipeline, and comparing the pipeline pressure loss coefficients of all pipeline segments in the conveying pipeline with a pipeline pressure loss threshold value;

if the pipeline pressure loss coefficient is smaller than or equal to the first pipeline pressure loss threshold value, judging that the pipeline blocking state of the pipeline section is unblocked;

if the pipeline pressure loss coefficient is larger than the first pipeline pressure loss threshold value and smaller than or equal to the second pipeline pressure loss threshold value, judging that the pipeline blocking state of the pipeline section is slightly blocked;

If the pipeline pressure loss coefficient is larger than the second pipeline pressure loss threshold value, judging that the pipeline blocking state of the pipeline section is heavy blocking;

Then, pipe fitting resistance coefficients of the pipe sections corresponding to the connecting pipe fittings are obtained, connection pressure loss coefficients of the pipe sections corresponding to the connecting pipe fittings in the conveying pipeline are calculated, and the connection pressure loss coefficients of the pipe sections corresponding to the connecting pipe fittings are compared with connection pressure loss critical values;

if the connection pressure loss coefficient is smaller than the connection pressure loss critical value, judging that the connection blocking state of the corresponding connection pipe fitting of the pipeline section is unblocked;

if the connection pressure loss coefficient is larger than or equal to the connection pressure loss critical value, judging that the connection blocking state of the pipeline section corresponding to the connection pipe fitting is blocking;

the compensation control terminal is used for carrying out compensation control on the pressure of the pump body connected with the conveying pipeline, and the compensation control process is specifically as follows:

Acquiring fluid inlet hydraulic pressure of a medium container, comparing the fluid inlet hydraulic pressure of the medium container with a standard hydraulic interval, and simultaneously acquiring a pipeline blocking state of each pipeline segment and a connection blocking state of a corresponding connection pipe fitting of the pipeline segment;

if the fluid inlet hydraulic pressure of the medium container belongs to the standard hydraulic interval, not performing any operation;

If the fluid inlet hydraulic pressure of the medium container does not belong to the standard hydraulic interval;

when the connection blocking state of the pipeline section corresponding to the connecting pipe fitting is unblocked and the pipeline blocking state of the pipeline section is slightly blocked, adjusting the pump body efficiency based on the standard hydraulic interval;

when the connection blocking state of the pipeline section corresponding to the connecting pipe fitting is unblocked and the pipeline blocking state of the pipeline section is heavy blocking, arranging a worker to go to the pipeline section for pipeline dredging operation;

when the connection blocking state of the pipeline section corresponding to the connecting pipe fitting is blocked and the pipeline blocking state of the pipeline section is slightly blocked, adjusting the pump body efficiency based on the standard hydraulic interval, and dredging the connecting pipe fitting of the pipeline section in the regular maintenance period;

When the connection blocking state of the pipeline section corresponding to the connecting pipe fitting is blocking and the pipeline blocking state of the pipeline section is heavy blocking, the workers are arranged to go to the pipeline section to conduct pipeline and connecting pipe fitting dredging operation.

2. The intelligent compensation control system for pressure of a pump body of claim 1, wherein the fluid characteristic data includes fluid density and fluid viscosity of the fluid medium in the delivery conduit;

The pipeline segment data comprise pipeline lengths, pipeline pipe diameters and absolute pipe wall roughness of all pipeline segments in the conveying pipeline, and pipe resistance coefficients of corresponding connecting pipes of all pipeline segments.

3. The intelligent compensation control system for pressure of a pump body according to claim 2, wherein the analysis process of the energy analysis module is specifically as follows:

acquiring the fluid density of a fluid medium in a conveying pipeline, the pipeline length and the pipeline diameter of a pipeline section in the conveying pipeline, and calculating the fluid conveying energy supply of the conveying pipeline;

acquiring the fluid viscosity of a fluid medium in a conveying pipeline, then acquiring the absolute roughness of the pipe wall of a pipeline section in the conveying pipeline and the resistance coefficient of a pipe fitting of a corresponding connecting pipe fitting of the pipeline section, and calculating the resistance compensation energy supply of the conveying pipeline;

adding and summing the fluid conveying energy supply and the resistance compensation energy supply of the conveying pipeline to obtain an energy supply requirement value of the conveying pipeline;

and comparing the energy supply demand value of the conveying pipeline with an energy supply demand threshold value, and judging the energy supply demand level of the conveying pipeline to be a first energy supply demand level, a second energy supply demand level or a third energy supply demand level.

4. A pressure intelligent compensation control system for a pump body according to claim 3, wherein the pressure energy demand of the first energy supply demand level is lower than the pressure energy demand of the second energy supply demand level, which is lower than the pressure energy demand of the third energy supply demand level.

5. The intelligent compensation control system for pressure of a pump body according to claim 3, wherein the working process of the configuration regulating terminal is specifically as follows:

If the energy supply demand level of the conveying system is the first energy supply demand level, switching the parameter configuration of the conveying pipeline corresponding to the pump body to the first pump body lift and the first pump body efficiency;

If the energy supply demand level of the conveying system is the second energy supply demand level, switching the parameter configuration of the conveying pipeline corresponding to the pump body to the second pump body lift and the second pump body efficiency;

If the energy supply demand level of the conveying system is the third energy supply demand level, switching the parameter configuration of the conveying pipeline corresponding to the pump body to the third pump body lift and the third pump body efficiency;

The numerical value of the first pump body lift is smaller than that of the second pump body lift, the numerical value of the second pump body lift is smaller than that of the third pump body lift, the numerical value of the first pump body efficiency is smaller than that of the second pump body efficiency, and the numerical value of the second pump body efficiency is smaller than that of the third pump body efficiency.

6. The intelligent pressure compensation control system for a pump body of claim 1, wherein the first and second line pressure loss thresholds are each greater than zero in value, the first line pressure loss threshold is less than the second line pressure loss threshold, and the pressure loss threshold is greater than zero in value.

7. An intelligent pressure compensation control method for a pump body, characterized in that based on the intelligent pressure compensation control system for a pump body according to any one of claims 1 to 6, the intelligent pressure compensation control method specifically comprises:

Step S101, fluid characteristic data of a fluid medium in a conveying pipeline and the conveying pipeline are obtained;

Step S102, analyzing the pressure energy provided by the corresponding pump body of the conveying pipeline to obtain the energy supply demand level of the conveying pipeline, and performing adjustment control on pump body configuration according to the energy supply demand level;

Step S103, monitoring the conveying condition of a conveying pipeline in real time, and monitoring to obtain the inlet pressure and the outlet pressure of each pipeline segment;

Step S104, analyzing the pipeline blocking condition of the conveying pipeline to obtain the pipeline blocking state of each pipeline section and the connection blocking state of the corresponding connecting pipe fitting of the pipeline section;

And step 105, collecting fluid inlet hydraulic pressure at a medium container connected with the conveying pipeline, and performing compensation control on the pressure of a pump body connected with the conveying pipeline.