CN116928078A - Energy-saving management system and method for digital energy vacuum station - Google Patents
Energy-saving management system and method for digital energy vacuum station Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000007726 management method Methods 0.000 claims description 34
- 238000004146 energy storage Methods 0.000 claims description 28
- 238000005086 pumping Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 claims 3
- 230000001276 controlling effect Effects 0.000 description 17
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- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
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- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
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- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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Abstract
The application relates to the technical field of vacuum stations, in particular to an energy-saving management system and method of a digital energy vacuum station, wherein the energy-saving management system comprises the following steps: a vacuum container is communicated between the concentration tank group and the vacuum pump group; monitoring the air pressure of the vacuum container, judging whether the air pressure of the vacuum container meets the air pressure requirement required by the concentration tank group, and if not, judging that: calculating the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group; according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; when the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from a working state to a temporary rest state, and the vacuum pump is stopped for rest at the moment; and after the rest time T, if the air pressure of the vacuum container is not lower than a preset threshold value, controlling the vacuum pump to be turned off. The application can carry out energy-saving management on the vacuum station and reduce energy waste.
Description
Technical Field
The application relates to the technical field of vacuum stations, in particular to an energy-saving management system and method of a digital energy vacuum station.
Background
The vacuum station is an integrated vacuum system and comprises a station room, equipment, pipelines, power distribution, air inlet and exhaust systems and the like. The vacuum system (negative pressure system) is widely used, such as vacuum packaging, vacuum conveying, vacuum evaporation, vacuum dehydration, vacuum concentration, and the like. Among them, vacuum concentration is a method for removing liquid from a solution, and is commonly used for separating and enriching biomacromolecules such as proteins, nucleic acids, and the like. The working principle is that the solution to be treated is placed in a concentration tank, the boiling point is reduced by pumping gas in the concentration tank through a vacuum pump, so that water and other volatile small molecules are evaporated from the solution, and finally solid residues after condensation are left.
The traditional production mode is to connect each concentration tank with a vacuum pump, when a certain concentration tank needs to be pumped, the vacuum pump is opened to pump air, so that the vacuum pump is required to be equipped for each concentration tank, great cost is economically caused, and meanwhile, when the power of the vacuum pump is higher than the pressure required in the concentration tank, a part of the power of the vacuum pump is wasted, and great energy waste is caused.
Disclosure of Invention
In order to solve the above problems, the present application provides an energy-saving management system and method for a digital energy vacuum station, which can perform energy-saving management on the vacuum station, and reduce energy waste, and specifically comprises: by communicating the vacuum vessel between the concentration tank set and the vacuum pump set, the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity can be reduced. Meanwhile, intelligent selection of vacuum pumps with different powers in the vacuum pump set is realized, and the vacuum pump with the pressure capacity relatively matched with the difference value is selected; avoiding energy waste caused by the adoption of a vacuum pump with overhigh power. And after the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from the working state to the temporary rest state, so that the electric energy waste caused by emergency refrigeration of the refrigerating system due to the fact that the continuous working temperature of the vacuum pump is raised too fast can be prevented. In addition, after the rest time T, if the air pressure of the vacuum container is not lower than a preset threshold value, controlling the vacuum pump to be shut down; thereby realizing shutdown energy saving.
In order to achieve the above purpose, the application adopts the following technical scheme:
an energy-saving management method of a digital energy vacuum station comprises the following steps:
the vacuum container is communicated between the concentration tank group and the vacuum pump group so as to reduce the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity, wherein the vacuum pump group comprises a plurality of vacuum pumps with different powers;
monitoring the air pressure of the vacuum container, judging whether the air pressure of the vacuum container meets the air pressure requirement required by the concentration tank group, and if not, judging that:
calculating the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group;
according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; when the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from a working state to a temporary rest state, and the vacuum pump is stopped for rest at the moment, wherein the rest time T=R (temp 1-temp 2) of the temporary rest state, wherein R is a preset vacuum pump rest coefficient, temp1 is a vacuum pump head temperature value, and temp2 is an environment temperature value where the vacuum pump is positioned;
after the rest time T passes, if the air pressure of the vacuum container is lower than a preset threshold value, controlling the vacuum pump to be adjusted from a temporary rest state to a working state, and if the air pressure of the vacuum container is not lower than the preset threshold value, controlling the vacuum pump to be shut down.
Further, the method also comprises the following steps:
through current transformer and the voltage acquisition module of establishing ties in the circuit main loop of vacuum pump, acquire current value and voltage value in real time, calculate again, record and store the electric quantity W that the vacuum pump consumed in each operating condition, the formula is:
wherein A is the time period of the vacuum pump in one working state, u (a) is the instantaneous voltage at the moment a, i (a) is the instantaneous current at the moment a, and lambda is the work coefficient of the vacuum pump.
Further, the method also comprises the following steps:
and monitoring the power of the vacuum pump in real time, judging whether the vacuum pump is in normal operation or not according to the detection result, and if not, triggering an alarm.
Further, if the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group is greater than the highest output range of the single vacuum pump, a plurality of vacuum pumps are adopted for linkage operation.
Further, in the multiple vacuum pump linkage operation mode, the operation time and the current of each pump are adjusted through the frequency converter, so that the air extraction capacity of the multiple vacuum pumps in linkage is distributed uniformly.
Further, by communicating a gas energy storage vessel between the concentration tank set and the vacuum vessel, fluctuations in pressure are buffered.
Further, the gas energy storage container is provided with a thermometer and a safety valve.
Further, the concentration tank group comprises a plurality of concentration tanks, each concentration tank is communicated with the gas energy storage container, and a control valve is arranged between each concentration tank and the gas energy storage container.
An energy saving management system of a digital energy vacuum station for performing the energy saving management method of a digital energy vacuum station as described above.
Further, the energy-saving management system of the digital energy vacuum station comprises a control module, wherein the control module is used for monitoring the running states of the vacuum pump set, the vacuum container, the gas energy storage container and the concentration tank set in real time and adjusting and controlling the vacuum pump set, the vacuum container, the gas energy storage container and the concentration tank set according to requirements.
The application has the beneficial effects that:
1. by communicating the vacuum vessel between the concentration tank set and the vacuum pump set, the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity can be reduced. Meanwhile, calculating the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group; according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; the intelligent selection of the vacuum pumps with different powers in the vacuum pump set is realized, and the vacuum pump with the pressure capacity relatively matched with the difference value is selected; avoiding energy waste caused by the adoption of a vacuum pump with overhigh power. And after the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from the working state to the temporary rest state, so that the electric energy waste caused by emergency refrigeration of the refrigerating system due to the fact that the continuous working temperature of the vacuum pump is raised too fast can be prevented. In addition, after the rest time T, if the air pressure of the vacuum container is not lower than a preset threshold value, controlling the vacuum pump to be shut down; thereby realizing shutdown energy saving.
2. The energy-saving management system of the digital energy vacuum station can provide more data support for the subsequent research, realize the fine management of data and provide data parameter basis for the subsequent improvement of the vacuum station by calculating, recording and storing the electric quantity W consumed by the vacuum pump in each working state in real time. Meanwhile, the application can acquire the current value and the voltage value in real time by connecting the current transformer and the voltage acquisition module in series in the circuit main loop of the vacuum pump, and calculate the electric quantity consumed by the vacuum pump in each working state, and the application uses cheaper hardware without using an electric energy meter or other expensive and complex equipment, thereby reducing the production cost.
3. Monitoring the power of the vacuum pump in real time, judging whether the vacuum pump is in normal operation or not according to the detection result, and if not, triggering an alarm; therefore, on-site staff can be reminded of paying attention to the abnormal condition of the vacuum pump, measures can be timely taken for investigation, and equipment damage and accidents are avoided. And moreover, each abnormality of the vacuum pump can be recorded and stored in a database, so that a user can conveniently check the running condition and the problem of the vacuum pump.
4. The linkage operation of the plurality of vacuum pumps can cope with the situation that the extraction amount required by the concentration tank group is large, in other words, the application can not only avoid the energy waste caused by the adoption of the vacuum pump with overhigh power, but also can realize the linkage operation of the plurality of vacuum pumps according to actual needs, thereby improving the extraction efficiency. The use of the frequency converter can realize the balance of air capacity when a plurality of vacuum pumps are operated in a linkage way, thereby achieving the effect of more efficiently and stably vacuumizing, and specifically comprising the following steps: linkage type air suction can be performed according to the scale and design of the pipeline so as to meet the requirements of higher flow and faster air suction rate. The vacuum pump can be matched with various vacuum pump models, the application range of the system is wider, and the requirements of complex or high-flow concentration tank groups can be met. The rotating speed of the vacuum pump motor is regulated through the frequency converter, so that the load of each vacuum pump is balanced, the energy consumption and the maintenance cost are reduced, and the work is more economic and efficient. In summary, this solution can improve the working efficiency of the vacuum station and reduce the operating costs.
5. The gas energy storage container is communicated between the concentration tank group and the vacuum container, so that pressure balance can be better realized, stable pressure difference in the vacuum system is ensured, and meanwhile, the leakage rate of the system can be reduced, and the vacuum degree is improved. When the internal pressure of the gas energy storage container exceeds a set range, the safety valve can automatically discharge gas, and the safe operation of the system is ensured. The temperature inside the gas energy storage container can be monitored in real time by adopting the thermometer, and data support is provided for system operation.
6. Through the communication between a plurality of concentrating tanks in the concentrating tank group and the gas energy storage container and the arrangement of the control valve, the effects of flexible operation, stable gas supply, accelerating the concentrating speed, improving the system stability and improving the operation safety are realized.
Drawings
Fig. 1 is a flowchart of an energy saving management method of a digital energy vacuum station according to the present application.
Fig. 2 is a schematic diagram of a vacuum pump power and pressure capability meter according to the present application.
Detailed Description
Referring to fig. 1, the present application relates to an energy-saving management system and method for a digital energy vacuum station. The energy-saving management system of the digital energy vacuum station comprises a control module, a vacuum pump set, a vacuum container, a gas energy storage container and a concentration tank set, wherein the control module is used for monitoring the running states of the vacuum pump set, the vacuum container, the gas energy storage container and the concentration tank set in real time and adjusting and controlling the vacuum pump set, the vacuum container, the gas energy storage container and the concentration tank set according to requirements. The energy-saving management system of the digital energy vacuum station can carry out energy-saving management on the vacuum station, reduces energy waste and specifically comprises the following steps: by communicating the vacuum vessel between the concentration tank set and the vacuum pump set, the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity can be reduced. Meanwhile, intelligent selection of vacuum pumps with different powers in the vacuum pump set is realized, and the vacuum pump with the pressure capacity relatively matched with the difference value is selected; avoiding energy waste caused by the adoption of a vacuum pump with overhigh power. And after the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from the working state to the temporary rest state, so that the electric energy waste caused by emergency refrigeration of the refrigerating system due to the fact that the continuous working temperature of the vacuum pump is raised too fast can be prevented. In addition, after the rest time T, if the air pressure of the vacuum container is not lower than a preset threshold value, controlling the vacuum pump to be shut down; thereby realizing shutdown energy saving.
The energy-saving management method of the digital energy vacuum station is applied to the energy-saving management system of the digital energy vacuum station. The energy-saving management method of the digital energy vacuum station comprises the following steps:
the vacuum container is communicated between the concentration tank group and the vacuum pump group so as to reduce the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity, wherein the vacuum pump group comprises a plurality of vacuum pumps with different powers; in the vacuum concentration, the concentration tank needs to frequently use a vacuum source and the required pumping amount is not large, and at the moment, if the vacuum pump is directly used for pumping, the pumping amount can cause the waste of the vacuum pump power.
Monitoring the air pressure of the vacuum container, judging whether the air pressure of the vacuum container meets the air pressure requirement required by the concentration tank group, and if not, judging that:
calculating the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group;
according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; when the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from a working state to a temporary rest state, and the vacuum pump is stopped for rest at the moment, wherein the rest time T=R (temp 1-temp 2) of the temporary rest state, wherein R is a preset vacuum pump rest coefficient, temp1 is a vacuum pump head temperature value, and temp2 is an environment temperature value where the vacuum pump is positioned; it should be noted that, the pressure capacity meter is used for recording the air pressures that can be provided corresponding to the rated power of each vacuum Pump in the vacuum Pump set, and specifically please refer to fig. 2, fig. 2 illustrates the air pressures that can be provided by the rated powers of Pump a to Pump E respectively.
After the rest time T passes, if the air pressure of the vacuum container is lower than a preset threshold value, controlling the vacuum pump to be adjusted from a temporary rest state to a working state, and if the air pressure of the vacuum container is not lower than the preset threshold value, controlling the vacuum pump to be shut down.
In the scheme, the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group is calculated; according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; the intelligent selection of the vacuum pumps with different powers in the vacuum pump set is realized, and the vacuum pump with the pressure capacity relatively matched with the difference value is selected; avoiding energy waste caused by the adoption of a vacuum pump with overhigh power. Meanwhile, after the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from the working state to the temporary rest state, so that the electric energy waste caused by emergency refrigeration of the refrigerating system due to the fact that the continuous working temperature of the vacuum pump rises too fast can be prevented. After the rest time T is elapsed, if the air pressure of the vacuum container is not lower than a preset threshold value, controlling the vacuum pump to be turned off; thereby realizing shutdown energy saving.
Further, the method also comprises the following steps:
through current transformer and the voltage acquisition module of establishing ties in the circuit main loop of vacuum pump, acquire current value and voltage value in real time, calculate again, record and store the electric quantity W that the vacuum pump consumed in each operating condition, the formula is:
wherein A is the time period of the vacuum pump in one working state, u (a) is the instantaneous voltage at the moment a, i (a) is the instantaneous current at the moment a, and lambda is the work coefficient of the vacuum pump.
In the scheme, the electric quantity W consumed by the vacuum pump in each working state is calculated, recorded and stored in real time, so that more data support can be provided for the follow-up research on the energy-saving management system of the digital energy vacuum station, the fine management of data is realized, and a data parameter basis is provided for the follow-up improvement of the vacuum station. Meanwhile, the application can acquire the current value and the voltage value in real time by connecting the current transformer and the voltage acquisition module in series in the circuit main loop of the vacuum pump, and calculate the electric quantity consumed by the vacuum pump in each working state, and the application uses cheaper hardware without using an electric energy meter or other expensive and complex equipment, thereby reducing the production cost.
Further, the method also comprises the following steps:
and monitoring the power of the vacuum pump in real time, judging whether the vacuum pump is in normal operation or not according to the detection result, and if not, triggering an alarm. In particular, the present embodiment may install a power detection device, such as a power meter or a power sensor, on an input line of the vacuum pump. The power detection device can detect the power output condition of the vacuum pump in real time and transmit the obtained power value to the control module through the sensor. The control module obtains the detected power value and processes the data according to a certain algorithm. When the output power of the vacuum pump is abnormal, the control module judges according to preset conditions, and then triggers an alarm (wherein the alarm comprises an audible alarm and an LED indicator lamp alarm) or other operations; in order to remind on-site staff to pay attention to the abnormal condition of the vacuum pump, take measures in time to check, avoid equipment damage and accident.
Meanwhile, the embodiment also records and stores the abnormality of the vacuum pump in a database every time, so that a user can conveniently check the running condition and the problem of the vacuum pump. In addition, in the data analysis stage, the operation prediction of the vacuum pump can be realized by means of big data or AI (advanced technology interface) calibration means, so that the maintenance period is optimized, the maintenance cost is reduced, and the service life is prolonged.
Preferably, if the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group is greater than the highest output range of a single vacuum pump, a plurality of vacuum pumps are adopted for linkage operation. In the scheme, the condition that the pumping quantity required by the concentration tank group is large can be dealt with by adopting the linkage operation of a plurality of vacuum pumps, in other words, the application can not only avoid the energy waste caused by the adoption of the vacuum pump with overhigh power, but also improve the pumping efficiency by adopting the linkage operation of a plurality of vacuum pumps according to actual needs. Further, in the multiple vacuum pump linkage operation mode, the operation time and the current of each pump are adjusted through the frequency converter, so that the air extraction capacity of the multiple vacuum pumps in linkage is distributed uniformly. In this embodiment, the use of the frequency converter can realize the balance of air volume when a plurality of vacuum pumps are operated in a linkage way, so as to achieve the effect of more efficiently and stably vacuumizing, and specifically comprises: linkage type air suction can be performed according to the scale and design of the pipeline so as to meet the requirements of higher flow and faster air suction rate. The vacuum pump can be matched with various vacuum pump models, the application range of the system is wider, and the requirements of complex or high-flow concentration tank groups can be met. The rotating speed of the vacuum pump motor is regulated through the frequency converter, so that the load of each vacuum pump is balanced, the energy consumption and the maintenance cost are reduced, and the work is more economic and efficient. In summary, this solution can improve the working efficiency of the vacuum station and reduce the operating costs.
Further, a gas energy storage container is communicated between the concentration tank group and the vacuum container, and the gas energy storage container is provided with a thermometer and a safety valve.
In the embodiment, the gas energy storage container is adopted to better realize pressure balance, so that the system leakage rate can be reduced while the stable pressure difference in the vacuum system is ensured, and the vacuum degree is improved. When the internal pressure of the gas energy storage container exceeds a set range, the safety valve can automatically discharge gas, and the safe operation of the system is ensured. The temperature inside the gas energy storage container can be monitored in real time by adopting the thermometer, and data support is provided for system operation.
Further, the concentration tank group comprises a plurality of concentration tanks, each concentration tank is communicated with the gas energy storage container, and a control valve is arranged between each concentration tank and the gas energy storage container; the purpose defined here is to improve the operational flexibility (control valves are provided between each concentration tank and the gas storage container, the gas flow can be independently controlled, flexible operation and control of different concentration tanks are achieved), to increase the gas supply stability (by communicating the gas storage container and the concentration tank, continuous and stable gas supply can be provided, the working efficiency of the concentration tank group is avoided from being affected by insufficient gas in the operation process), to accelerate the concentration speed (the gas storage container can rapidly supplement the gas required by the concentration tank group, the concentration tank can continuously perform concentration in the operation process, thereby improving the concentration speed and efficiency), to improve the system stability (each concentration tank can accurately control the gas flow and the pressure balance by communicating with the gas storage container and controlling the control valve, thereby increasing the stability and reliability of the system), to improve the operational safety (by setting the control valves between the concentration tank group and the gas storage container, the gas flow can be isolated and controlled, the occurrence of unexpected leakage and safety accidents is avoided, and the operational safety is improved).
Compared with the prior art, the beneficial effects of the embodiment of the application are at least as follows:
1. by communicating the vacuum vessel between the concentration tank set and the vacuum pump set, the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity can be reduced. Meanwhile, calculating the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group; according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; the intelligent selection of the vacuum pumps with different powers in the vacuum pump set is realized, and the vacuum pump with the pressure capacity relatively matched with the difference value is selected; avoiding energy waste caused by the adoption of a vacuum pump with overhigh power. And after the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from the working state to the temporary rest state, so that the electric energy waste caused by emergency refrigeration of the refrigerating system due to the fact that the continuous working temperature of the vacuum pump is raised too fast can be prevented. In addition, after the rest time T, if the air pressure of the vacuum container is not lower than a preset threshold value, controlling the vacuum pump to be shut down; thereby realizing shutdown energy saving.
2. The energy-saving management system of the digital energy vacuum station can provide more data support for the subsequent research, realize the fine management of data and provide data parameter basis for the subsequent improvement of the vacuum station by calculating, recording and storing the electric quantity W consumed by the vacuum pump in each working state in real time. Meanwhile, the application can acquire the current value and the voltage value in real time by connecting the current transformer and the voltage acquisition module in series in the circuit main loop of the vacuum pump, and calculate the electric quantity consumed by the vacuum pump in each working state, and the application uses cheaper hardware without using an electric energy meter or other expensive and complex equipment, thereby reducing the production cost.
3. Monitoring the power of the vacuum pump in real time, judging whether the vacuum pump is in normal operation or not according to the detection result, and if not, triggering an alarm; therefore, on-site staff can be reminded of paying attention to the abnormal condition of the vacuum pump, measures can be timely taken for investigation, and equipment damage and accidents are avoided. And moreover, each abnormality of the vacuum pump can be recorded and stored in a database, so that a user can conveniently check the running condition and the problem of the vacuum pump.
4. The linkage operation of the plurality of vacuum pumps can cope with the situation that the extraction amount required by the concentration tank group is large, in other words, the application can not only avoid the energy waste caused by the adoption of the vacuum pump with overhigh power, but also can realize the linkage operation of the plurality of vacuum pumps according to actual needs, thereby improving the extraction efficiency. The use of the frequency converter can realize the balance of air capacity when a plurality of vacuum pumps are operated in a linkage way, thereby achieving the effect of more efficiently and stably vacuumizing, and specifically comprising the following steps: linkage type air suction can be performed according to the scale and design of the pipeline so as to meet the requirements of higher flow and faster air suction rate. The vacuum pump can be matched with various vacuum pump models, the application range of the system is wider, and the requirements of complex or high-flow concentration tank groups can be met. The rotating speed of the vacuum pump motor is regulated through the frequency converter, so that the load of each vacuum pump is balanced, the energy consumption and the maintenance cost are reduced, and the work is more economic and efficient. In summary, this solution can improve the working efficiency of the vacuum station and reduce the operating costs.
5. The gas energy storage container is communicated between the concentration tank group and the vacuum container, so that pressure balance can be better realized, stable pressure difference in the vacuum system is ensured, and meanwhile, the leakage rate of the system can be reduced, and the vacuum degree is improved. When the internal pressure of the gas energy storage container exceeds a set range, the safety valve can automatically discharge gas, and the safe operation of the system is ensured. The temperature inside the gas energy storage container can be monitored in real time by adopting the thermometer, and data support is provided for system operation.
6. Through the communication between a plurality of concentrating tanks in the concentrating tank group and the gas energy storage container and the arrangement of the control valve, the effects of flexible operation, stable gas supply, accelerating the concentrating speed, improving the system stability and improving the operation safety are realized.
The above embodiments are merely illustrative of the preferred embodiments of the present application and are not intended to limit the scope of the present application, and various modifications and improvements made by those skilled in the art to the technical solution of the present application should fall within the scope of protection defined by the claims of the present application without departing from the spirit of the design of the present application.
Claims (10)
1. The energy-saving management method of the digital energy vacuum station is characterized by comprising the following steps of:
the vacuum container is communicated between the concentration tank group and the vacuum pump group so as to reduce the waste of vacuum pump power caused by frequent use of the vacuum pump under the condition of less pumping quantity, wherein the vacuum pump group comprises a plurality of vacuum pumps with different powers;
monitoring the air pressure of the vacuum container, judging whether the air pressure of the vacuum container meets the air pressure requirement required by the concentration tank group, and if not, judging that:
calculating the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group;
according to a preset vacuum pump power and pressure capacity meter, controlling a vacuum pump with the pressure capacity matched with the difference value in the vacuum pump set to enter a working state; when the air pressure change of the vacuum container is stable, the vacuum pump is adjusted from a working state to a temporary rest state, and the vacuum pump is stopped for rest at the moment, wherein the rest time T=R (temp 1-temp 2) of the temporary rest state, wherein R is a preset vacuum pump rest coefficient, temp1 is a vacuum pump head temperature value, and temp2 is an environment temperature value where the vacuum pump is positioned;
after the rest time T passes, if the air pressure of the vacuum container is lower than a preset threshold value, controlling the vacuum pump to be adjusted from a temporary rest state to a working state, and if the air pressure of the vacuum container is not lower than the preset threshold value, controlling the vacuum pump to be shut down.
2. The energy saving management method of a digital energy vacuum station according to claim 1, further comprising the steps of:
through current transformer and the voltage acquisition module of establishing ties in the circuit main loop of vacuum pump, acquire current value and voltage value in real time, calculate again, record and store the electric quantity W that the vacuum pump consumed in each operating condition, the formula is:
wherein A is the time period of the vacuum pump in one working state, u (a) is the instantaneous voltage at the moment a, i (a) is the instantaneous current at the moment a, and lambda is the work coefficient of the vacuum pump.
3. The energy saving management method of a digital energy vacuum station according to claim 2, further comprising the steps of:
and monitoring the power of the vacuum pump in real time, judging whether the vacuum pump is in normal operation or not according to the detection result, and if not, triggering an alarm.
4. The energy saving management method of the digital energy vacuum station according to claim 3, wherein if the difference between the air pressure of the vacuum container and the air pressure required by the concentration tank group is greater than the highest output range of the single vacuum pump, the plurality of vacuum pumps are operated in a linkage manner.
5. The energy saving management method of the digital energy vacuum station according to claim 4, wherein in the multiple vacuum pump linkage operation mode, the operation time and the current of each pump are adjusted through a frequency converter so that the air extraction capacity of the multiple vacuum pump linkage is uniformly distributed.
6. The energy conservation management method of the digital energy vacuum station according to claim 1, wherein the fluctuation of pressure is buffered by communicating a gas energy storage container between the concentration tank group and the vacuum container.
7. The energy saving management method of a digital energy vacuum station of claim 6, wherein the gas energy storage container is provided with a thermometer and a safety valve.
8. The method of claim 7, wherein the set of concentrating tanks comprises a plurality of concentrating tanks, each concentrating tank being in communication with the gas storage vessel, a control valve being provided between each concentrating tank and the gas storage vessel.
9. An energy saving management system of a digital energy vacuum station, characterized in that the energy saving management system of a digital energy vacuum station is used for executing the energy saving management method of a digital energy vacuum station according to any one of claims 1-8.
10. The energy conservation management system of the digital energy vacuum station according to claim 9, wherein the energy conservation management system of the digital energy vacuum station comprises a control module for monitoring the operation states of the vacuum pump group, the vacuum container, the gas energy storage container and the concentration tank group in real time and adjusting and controlling the vacuum pump group, the vacuum container, the gas energy storage container and the concentration tank group according to the requirements.
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