Air compression station energy consumption optimization process

Abstract

The present application relates to air compression station technical field, provide a kind of air compression station energy consumption optimization process, comprising the following steps: S1, air supply main pipeline is equipped with air pressure sensor, and the air outlet of air supply main pipeline is equipped with valve;S2, obtain air compressor number, air compressor exhaust capacity and air compressor power, carry out full combination processing to air compressor number, obtain number combination data table, exhaust capacity addition data table and power addition data table;S3, set upper limit threshold and lower limit threshold of air pressure;S4, first close valve, then start all air compressor, record the current number combination item corresponding to the air compressor in starting state, current exhaust capacity addition value and current power addition value;S5, when air pressure value is within the range of upper limit threshold and lower limit threshold of air pressure, open valve;S6, monitor air pressure value.The present application has the advantages that: select the air compressor start combination that meets air pressure supply while power is lowest, optimize the energy consumption of air compression station.

Description

Technical Field

[0001] This invention relates to the field of air compressor station technology, and more specifically to an energy consumption optimization process for air compressor stations. Background Technology

[0002] An air compressor is short for an air compressor. An air compressor is the main component of an air source device. It is a device that converts the mechanical energy of a prime mover (usually an electric motor) into the pressure energy of gas, and is a device that generates compressed air pressure.

[0003] The glass bottle manufacturing plant requires compressed air. The air compressor station is the working area of ​​the air compressors, responsible for delivering compressed air to the workshops. The compressed air generated by the air compressors first enters the storage tank and then flows to the main air supply pipeline. The outlet of the main air supply pipeline connects to the air delivery pipelines of each workshop. When the demand for compressed air in the workshops exceeds the supply capacity of the air compressor station, the air pressure in the main air supply pipeline decreases, and the amount of compressed air in the storage tank decreases. When the demand for compressed air in the workshops is less than the supply capacity of the air compressor station, the air pressure in the main air supply pipeline increases, and the amount of compressed air in the storage tank increases. A pressure sensor is installed on the main air supply pipeline, and a pressure display is installed in the working chamber of the air compressor station. The pressure sensor sends the detected pressure value to the pressure display.

[0004] Currently, when the pressure display shows a reading below the required lower threshold, staff move to the air compressor site, operate the compressor control cabinet, and start the corresponding air compressor to increase the pressure in the main air supply pipeline. Conversely, when the pressure display shows a reading above the required upper threshold, the same procedure is performed to operate the compressor control cabinet and stop the corresponding air compressor to reduce the pressure in the main air supply pipeline. The air compressor station has multiple air compressors, some with the same displacement and others with different displacements.

[0005] The control cabinets of air compressors are geographically dispersed, making on-site operation inefficient. After starting and stopping the compressors, operators must monitor the pressure display to confirm if the required pressure has been reached. This leads to a situation where a large demand for compressed air results in the operation of a smaller compressor, failing to meet the pressure requirements of the main supply line; conversely, a smaller demand results in the operation of a larger compressor, increasing unnecessary energy consumption. Therefore, an energy optimization process for air compressor stations is needed to select compressors that ensure the compressed air supply to the main pipeline while avoiding unnecessary energy consumption. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an energy consumption optimization process for air compressor stations.

[0007] This invention is implemented as follows: an energy consumption optimization process for air compressor stations, comprising the following steps:

[0008] S1. The exhaust port of the air compressor is connected to the air inlet of the air storage tank, the air outlet of the air storage tank is connected to the air inlet of the main air supply pipeline, the main air supply pipeline is equipped with a pressure sensor, the air outlet of the main air supply pipeline is equipped with a valve, the pressure sensor is electrically connected to a display, the display is used to display the air pressure value of the main air supply pipeline, and there are multiple air compressors.

[0009] S2. Obtain the air compressor number, air compressor discharge volume, and air compressor power. Perform a full combination process on the air compressor number to obtain a number combination data table, a discharge volume sum data table, and a power sum data table. The number combination items in the number combination data table, the discharge volume sum value in the discharge volume sum data table, and the power sum value in the power sum data table correspond one-to-one.

[0010] S3. Set the upper and lower pressure thresholds;

[0011] S4. First, close the valve, then start all the air compressors. The air tank stores compressed air. At this time, the air pressure value of the main air supply pipeline rises. Record the current number combination item, the sum of the current exhaust volume and the sum of the current power of the air compressors that are in the start-up state.

[0012] S5. When the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, open the valve;

[0013] S6. Monitor the air pressure value. When the air pressure value is lower than the lower air pressure threshold, proceed to S7; when the air pressure value is higher than the upper air pressure threshold, proceed to S8; when the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, proceed to S9.

[0014] S7. First, search the exhaust volume summation data table, select the exhaust volume summation value that is higher than the current exhaust volume summation value and is the smallest, and record it as the exhaust volume increase parameter. Then, search the number combination data table, select the number combination item corresponding to the exhaust volume increase parameter, and control the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume summation value and the current power summation value, and go to S6.

[0015] S8. First, search the exhaust volume summation data table, select the largest exhaust volume summation value that is lower than the current exhaust volume summation value, and record it as the reduced exhaust volume parameter. Then, search the number combination data table, select the number combination item corresponding to the reduced exhaust volume parameter, and control the start / stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume summation value and the current power summation value, and go to S6.

[0016] S9. Monitor the start / stop status of the air compressors. If all air compressors are stopped, proceed to S10; if at least one air compressor is running, proceed to S6.

[0017] S10. End the operation of the air compressor station.

[0018] Furthermore, it also includes: in S6, when the air pressure value does not change, the current number combination item is recorded as the balance number combination parameter;

[0019] In S9, the start-stop status of the air compressor is controlled through the control cabinet of the air compressor according to the balance number combination parameters, and the start-stop status of the air compressor is monitored.

[0020] Furthermore, it also includes: in S6, when the air pressure value does not change, the sum of the current exhaust volume is recorded as the balanced exhaust volume parameter.

[0021] In step S9, firstly, based on the balanced exhaust volume parameter, the exhaust volume summation data table, the power summation data table, and the number combination data table are searched sequentially. The number combination item corresponding to the same balanced exhaust volume parameter and the smallest power summation value is selected and recorded as the balanced number combination parameter. Then, based on the balanced number combination parameter, the start and stop status of the air compressor is controlled through the control cabinet of the air compressor, and the start and stop status of the air compressor is monitored.

[0022] Furthermore, it also includes: in S3, providing a table corresponding to the rate of change of air pressure value and the increase or decrease of exhaust volume;

[0023] Specifically, step S6 involves monitoring the air pressure value, recording the rate of change of the air pressure value, and proceeding to step S7 when the air pressure value is lower than the lower air pressure threshold; proceeding to step S8 when the air pressure value is higher than the upper air pressure threshold; and proceeding to step S9 when the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold.

[0024] Specifically, S7 involves first looking up the table corresponding to the rate of change of air pressure value and the increase or decrease of exhaust volume, combining it with the current exhaust volume sum value to obtain the exhaust volume demand value, then looking up the exhaust volume sum data table, selecting the exhaust volume sum value that is closest to the exhaust volume demand value and recording it as the exhaust volume increase parameter, then looking up the number combination data table, selecting the number combination item corresponding to the exhaust volume increase parameter, and controlling the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item, and updating the current number combination item, the current exhaust volume sum value and the current power sum value;

[0025] Specifically, S8 involves first looking up the table corresponding to the rate of change of air pressure and the increase or decrease of exhaust volume, combining it with the current exhaust volume sum value to obtain the required exhaust volume value, then looking up the exhaust volume sum data table, selecting the exhaust volume sum value closest to the required exhaust volume value and recording it as the reduced exhaust volume parameter, then looking up the number combination data table, selecting the number combination item corresponding to the reduced exhaust volume parameter, and controlling the start / stop status of the air compressor through the air compressor control cabinet according to the selected number combination item, and updating the current number combination item, the current exhaust volume sum value, and the current power sum value.

[0026] Furthermore, it also includes: in S2, the control cabinet of the air compressor is connected to the computer via a data cable. The computer obtains the air compressor number, air compressor discharge volume, and air compressor power from the control cabinet of the air compressor. The air compressor number is processed by a full combination to obtain a number combination data table, a discharge volume sum data table, and a power sum data table. The number combination items in the number combination data table, the discharge volume sum value in the discharge volume sum data table, and the power sum value in the power sum data table correspond one-to-one. The computer's display screen also displays the number combination data table, the discharge volume sum data table, and the power sum data table.

[0027] The barometric pressure sensor is connected to the computer via a data cable, and the display is the computer's screen.

[0028] The computer controls the start and stop status of the air compressor according to the number combination item. The computer's display screen also displays the current number combination item, the sum of the current exhaust volume and the sum of the current power corresponding to the air compressor in the start state.

[0029] The valve is an electrically adjustable valve, and its opening and closing states are controlled by the computer.

[0030] Furthermore, it also includes: in S3, the upper limit threshold and the lower limit threshold of air pressure are input by the keyboard and stored in the computer;

[0031] In step S5, the computer compares the air pressure value with the upper air pressure threshold and the lower air pressure threshold.

[0032] The computer executes the process steps S6 to S9.

[0033] Furthermore, it also includes: in S1, the hot water outlet of the air compressor is connected to the inlet of the hot water main pipeline, the outlet of the hot water main pipeline is connected to the inlet of the cooling tower, the outlet of the cooling tower is connected to the inlet of the water storage tank, the outlet of the water storage tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the cold water main pipeline, the outlet of the cold water main pipeline is connected to the cold water inlet of the air compressor, a water temperature sensor is installed in the hot water main pipeline, and there are multiple water pumps;

[0034] In step S2, the water temperature sensor is connected to the computer via a data cable, and the computer's display screen also shows the water temperature value of the main hot water pipe; the computer is connected to the water pump controller via a data cable, and the computer controls the start and stop status of the water pump.

[0035] In S3, the water temperature threshold, the correspondence table between the number of water pumps started and the number of air compressors started are all input by the keyboard and stored in the computer.

[0036] In step S6, the computer determines the number of air compressors in the start-up state based on the current number combination item, and then determines the number of water pumps to be started based on the correspondence table between the number of water pumps started and the number of air compressors started.

[0037] The advantages of this invention are as follows: 1. Based on the air compressor numbers, air compressor discharge volume, and air compressor power corresponding to multiple air compressors, a full combination processing is performed to obtain a number combination data table, a discharge volume sum data table, and a power sum data table. Based on this, the compressed air supply of the air compressor station is adjusted, and the air pressure value of the main air supply pipeline is monitored to keep it within the upper and lower air pressure thresholds. The air compressor start-up combination that meets the air pressure supply requirements and has the lowest power is selected to optimize the energy consumption of the air compressor station.

[0038] 2. The computer performs full combination processing to obtain a number combination data table, an exhaust volume sum data table, and a power sum data table. Based on the actual air pressure value of the air pressure sensor, the computer automatically finds the optimal air compressor number combination and controls the start and stop status of the air compressor. It has a high degree of automation and high execution efficiency.

[0039] 3. The computer determines the number of water pumps to be started based on the current number of air compressors started, so as to optimize the total power of the water pumps while meeting the cooling requirements of the air compressors. Attached Figure Description

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Figure 1 This is a flowchart of the air compressor station energy consumption optimization process of the present invention.

[0042] Figure 2 This is a schematic diagram of the computer-controlled air compressor and water pump of the present invention.

[0043] Reference numerals: 10 air compressor; 11 air filter; 12 air tank;

[0044] 20. Main gas supply pipeline; 21. Gas pressure sensor; 22. Gas pressure alarm; 23. Valve;

[0045] Computer 30; Display screen 31;

[0046] 40. Water pump; 41. Cooling tower; 42. Water storage tank; 43. Hot water main pipeline; 44. Cold water main pipeline; 45. Water temperature sensor; 46. Water temperature alarm. Detailed Implementation

[0047] This invention provides an energy consumption optimization process for air compressor stations, overcoming the shortcomings of the prior art where operators start the air compressor at the site, resulting in a mismatch between the demand for compressed air in the main air supply pipe and the total exhaust volume of the air compressor. This process ensures the compressed air demand of the main air supply pipe while avoiding unnecessary power consumption, selecting the air compressor start-up combination that meets the air pressure supply requirements and has the lowest power consumption, thus optimizing the energy consumption of the air compressor station.

[0048] The overall concept of the technical solution of this invention is as follows:

[0049] When the workshop's compressed air demand exceeds the air compressor station's supply, the pressure in the main air supply pipeline decreases, reducing the amount of compressed air in the storage tank. Conversely, when the workshop's compressed air demand is less than the air compressor station's supply, the pressure in the main air supply pipeline increases, increasing the amount of compressed air in the storage tank. The pressure sensor detects the pressure value in the main air supply pipeline, and monitoring this pressure value adjusts the start / stop status of the air compressors in the air compressor station.

[0050] Based on the compressor numbers, discharge capacity, and power of multiple air compressors in the air compressor station, a full combination processing is performed to obtain a number combination data table, a discharge capacity sum data table, and a power sum data table. When the air pressure value is not within the upper or lower air pressure threshold, the air compressor start-up combination that meets the air pressure supply requirements and has the lowest power is selected based on the number combination data table, discharge capacity sum data table, and power sum data table to optimize the energy consumption of the air compressor station.

[0051] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0052] See Figures 1 to 2 Embodiment 1 of the present invention.

[0053] An energy consumption optimization process for air compressor stations includes the following steps:

[0054] S1. The exhaust port of the air compressor 10 is connected to the air inlet of the air storage tank 12. The air outlet of the air storage tank 12 is connected to the air inlet of the main air supply pipeline 20. The main air supply pipeline 20 is equipped with a pressure sensor 21. The air outlet of the main air supply pipeline 20 is equipped with a valve. The air inlet of the air compressor 10 is equipped with an air filter 11. The pressure sensor 21 is electrically connected to a display. The display is used to display the air pressure value of the main air supply pipeline 20. There are multiple air compressors 10.

[0055] The hot water outlet of the air compressor 10 is connected to the inlet of the hot water main pipe 43. The outlet of the hot water main pipe 43 is connected to the inlet of the cooling tower 41. The outlet of the cooling tower 41 is connected to the inlet of the water storage tank 42. The outlet of the water storage tank 42 is connected to the inlet of the water pump 40. The outlet of the water pump 40 is connected to the inlet of the cold water main pipe 44. The outlet of the cold water main pipe 44 is connected to the cold water inlet of the air compressor 10. A water temperature sensor 45 is installed in the hot water main pipe 43. There are multiple water pumps 40.

[0056] S2. Obtain the air compressor number, air compressor discharge volume, and air compressor power. Perform a full combination process on the air compressor number to obtain a number combination data table, a discharge volume sum data table, and a power sum data table. The number combination items in the number combination data table, the discharge volume sum value in the discharge volume sum data table, and the power sum value in the power sum data table correspond one-to-one.

[0057] The air compressor 10 can be started and stopped manually by operating the control cabinet on-site, or the air compressor 10 can be started and stopped by the computer 30 by sending a signal to the control cabinet of the air compressor. The computer 30 has high execution efficiency.

[0058] The air compressor number, air compressor discharge capacity, and air compressor power can be input via keyboard and stored in computer 30; alternatively, the air compressor control cabinet can be connected to the computer via a data cable. The computer 30 obtains the air compressor number, air compressor discharge capacity, and air compressor power from the control cabinet of the air compressor 10, performs a full combination processing on the air compressor number, and obtains the number combination data table, the discharge capacity sum data table, and the power sum data table. The display screen 31 of the computer 30 also displays the number combination data table, the discharge capacity sum data table, and the power sum data table.

[0059] The air pressure sensor 21 is connected to the computer 30 via a data cable, and the display is the screen 31 of the computer 30. The computer 30 is also connected to the air pressure alarm 22 via a data cable. When the air pressure value of the main air supply pipeline 20 is not within the range of the lower air pressure threshold and the upper air pressure threshold, the computer 30 causes the air pressure alarm 22 to sound an alarm to remind the staff of the air compressor station.

[0060] The computer 30 controls the start and stop status of the air compressor 10 according to the number combination item. The display screen 31 of the computer 30 also displays the current number combination item, the sum of the current exhaust volume and the sum of the current power corresponding to the air compressor 10 in the start state.

[0061] The valve is an electrically adjustable valve, and its opening and closing states are controlled by the computer 30.

[0062] The water temperature sensor 45 is connected to the computer 30 via a data cable. The display screen 31 of the computer 30 also displays the water temperature value of the main hot water pipe 43. The computer 30 is also connected to the controller of the water pump 40 via a data cable, and the computer 30 controls the start and stop status of the water pump 40. The water pump 40 delivers cold water from the storage tank 42 to the air compressor 10 for heat exchange. The resulting hot water is cooled by the cooling tower 41 and then flows back to the storage tank 42. When more air compressors 10 are running, more hot water is produced, thus raising the water level in the main hot water pipe 43. Operators can also monitor the real-time water temperature changes in the main hot water pipe 43 on the display screen 31 of the computer 30. The computer 30 is also connected to a water temperature alarm 46 via a data cable. When the water temperature value of the main hot water pipe 43 exceeds the water temperature threshold, the computer 30 activates the water temperature alarm 46 to sound an alarm, alerting the air compressor station staff. Operators can manually control the start and stop status of the water pump via the controller of the water pump 40.

[0063] In this embodiment, it is assumed that there are five air compressors 10, with air compressor numbers A1, A2, A3, A4, and A5 respectively; air compressor discharge capacities E1, E2, E3, E4, and E5 respectively; and air compressor powers P1, P2, P3, P4, and P5 respectively.

[0064] For example, E1=10m 3 / min, E2=20m 3 / min, E3=20m 3 / min, E4=40m 3 / min, E5=100m 3 / min; P1=63kw, P2=132kw, P3=132kw, P4=250kw, P5=500kw.

[0065] The computer performs a full combination processing on the air compressor numbers to obtain a number combination data table, namely {Air, A1, A2, A3, A4, A5, A1A2, A1A3, A1A4, A1A5, A2A3, A2A4, A2A5, A3A4, A3A5, A4A5, A1A2A3, A1A2A4, A1A2A5, A1A3A4, A1A3A5, A1A4A5, A2A3A4, A2A3A5, A2A4A5, A3A4A5, A1A2A3A4, A1A2A3A5, A1A3A4A5, A1A2A4A5, A2A3A4A5, A1A2A3A4A5}.

[0066] The table of total exhaust volume is as follows: 0, E1, E2, E3, E4, E5, E1+E2, E1+E3, E1+E4, E1+E5, E2+E3, E2+E4, E2+E5, E 3+E4, E3+E5, E4+E5, E1+E2+E3, E1+E2+E4, E1+E2+E5, E1+E3+E4, E1+E3+E5 , E1+E4+E5, E2+E3+E4, E2+E3+E5, E2+E4+E5, E3+E4+E5, E1+E2+E3+E4, E1+ E2+E3+E5, E1+E3+E4+E5, E1+E2+E4+E5, E2+E3+E4+E5, E1+E2+E3+E4+E5}.

[0067] Power summation data table, i.e. { 0. P1, P2, P3, P4, P5, P1+P2, P1+P3, P1+P4, P1+P5, P2+P3, P2+P4, P2+P5, P 3+P4, P3+P5, P4+P5, P1+P2+P3, P1+P2+P4, P1+P2+P5, P1+P3+P4, P1+P3+P5 , P1+P4+P5, P2+P3+P4, P2+P3+P5, P2+P4+P5, P3+P4+P5, P1+P2+P3+P4, P1+ P2+P3+P5, P1+P3+P4+P5, P1+P2+P4+P5, P2+P3+P4+P5, P1+P2+P3+P4+P5}.

[0068] For example, if the number combination item A1A2A5 is selected, the computer will start the air compressors numbered A1, A2, and A5, and stop the air compressors numbered A3 and A4. The current number combination item is A1A2A5, and the sum of the current exhaust volumes is E1 + E2 + E5, where E1 + E2 + E5 = 130m³. 3 / min, the current power sum value P1+P2+P5, P1+P2+P5=695kw. If the current number combination item is empty, it means all air compressors are stopped, and the sum value of the current discharge volume and the sum value of the current power are both 0. If the current number combination item is A1A2A3A4A5, it means all air compressors are started, and the sum value of the current discharge volume and the sum value of the current power are both at their maximum.

[0069] S3. Set the upper limit threshold and the lower limit threshold for air pressure; the upper limit threshold and the lower limit threshold for air pressure are input by the keyboard and stored in the computer;

[0070] The water temperature threshold and the table corresponding to the number of water pumps and air compressors started are all input via keyboard and stored in the computer.

[0071] S4. First, close the valve, then start all the air compressors 10. The air tank stores compressed air. At this time, the air pressure value of the main air supply pipeline 20 rises. Record the current number combination item, the sum of the current exhaust volume and the sum of the current power of the air compressors in the start-up state. This is the state when the air compressor station just starts working. The air pressure value of the main air supply pipeline 20 starts to rise from zero.

[0072] S5. When the air pressure value is within the range of the upper and lower air pressure thresholds, open the valve; this is the main air supply pipeline 20, which supplies compressed air to each workshop. When the workshop's demand for compressed air exceeds the air compressor station's supply, the air pressure in the main air supply pipeline 20 decreases, and the amount of compressed air in the storage tank 12 decreases. When the workshop's demand for compressed air is less than the air compressor station's supply, the air pressure in the main air supply pipeline 20 increases, and the amount of compressed air in the storage tank 12 increases.

[0073] The computer compares the air pressure value with the upper air pressure threshold and the lower air pressure threshold; the computer also compares the water temperature of the hot water main pipe 43 with the water temperature threshold.

[0074] S6. Monitor the air pressure value. When the air pressure value does not change, record the current number combination item as the balance number combination parameter. If the air pressure value does not change, it means that the demand for compressed air in the workshop is equal to the supply of compressed air from the air compressor station. For example, if the air compressors numbered A2 and A3 start and the air compressors A1, A4, and A5 stop, and the air pressure value does not change, then the balance number combination parameter is A2A3.

[0075] Record the sum of the current exhaust volumes as the balanced exhaust volume parameter; then the sum of the exhaust volumes corresponding to A2A3, E2+E3, is the balanced exhaust volume parameter.

[0076] The computer determines the number of air compressors in the start-up state based on the current number combination item, and then determines the number of water pumps to be started according to the correspondence table between the number of water pumps started and the number of air compressors started.

[0077] The computer optimizes the total power of the water pumps while meeting the cooling requirements of the air compressors. The ratio of the number of air compressors started to the number of water pumps started is 2:1, rounded down. For example, if there are three water pumps and five air compressors, when two air compressors are started, the computer starts one water pump; when four air compressors are started, the computer starts two water pumps. If the water temperature in the main hot water pipe 43 exceeds the specified temperature threshold during air compressor operation, the water temperature alarm 46 will sound, and the computer will start another water pump. For example, if the current combination is A1A2A5, it means that three air compressors are started, and the computer will start one water pump. If the water temperature exceeds the specified temperature threshold, the computer will start two water pumps.

[0078] When the air pressure value is lower than the lower air pressure threshold, proceed to S7; when the air pressure value is higher than the upper air pressure threshold, proceed to S8; when the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, proceed to S9.

[0079] S7. First, search the exhaust volume summation data table, select the exhaust volume summation value that is higher than the current exhaust volume summation value and is the smallest, and record it as the exhaust volume increase parameter. Then, search the number combination data table, select the number combination item corresponding to the exhaust volume increase parameter, and control the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume summation value and the current power summation value, and go to S6.

[0080] For example, the sum of the front displacement values ​​is E1+E2+E5; however, in the displacement summation data table, E1+E4+E5, E2+E3+E5, E2+E4+E5, E3+E4+E5, E1+E2+E3+E5, E1+E3+E4+E5, E1+E2+E4+E5, E2+E3+E4+E5, and E1+E2+E3+E4+E5 are all higher than... Among E1+E2+E5, E1+E4+E5, E2+E3+E5, E2+E4+E5, E3+E4+E5, E1+E2+E3+E5, E1+E3+E4+E5, E1+E2+E4+E5, E2+E3+E4+E5, and E1+E2+E3+E4+E5, E2+E3+E4+E5 and E4+E5 are the smallest, both being 140m. 3 If the displacement adjustment parameter is set to E2+E3+E5 or E4+E5, then the corresponding number combination item is A2A3A5. The computer will then start air compressors numbered A2, A3, and A5, and stop air compressors numbered A1 and A4. Alternatively, if the corresponding number combination item is A4A5, the computer will start air compressors numbered A4 and A5, and stop air compressors numbered A1, A2, and A3.

[0081] However, since the power of P2+P3+P5 is 764kw and the power of P4+P5 is 750kw in the power summation table, and the power of the numbered combination item A4A5 corresponding to the displacement adjustment parameter E4+E5 is smaller, the numbered combination item A4A5 is selected first.

[0082] For example, if the pressure value does not change after switching to S6, it means that the demand for compressed air in the workshop is equal to the supply of compressed air from the air compressor station, and the balance number combination parameter is A4A5.

[0083] S8. First, search the exhaust volume summation data table, select the largest exhaust volume summation value that is lower than the current exhaust volume summation value, and record it as the reduced exhaust volume parameter. Then, search the number combination data table, select the number combination item corresponding to the reduced exhaust volume parameter, and control the start / stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume summation value and the current power summation value, and go to S6.

[0084] For example, the sum of the front displacement values ​​is E1+E2+E5; however, in the displacement summation data table, 0, E1, E2, E3, E4, E5, E1+E2, E1+E3, E1+E4, E1+E5, E2+E3, E2+E4, E2+E5, E3+E4, E3+E5, E1+E2+E3, E1+E2+E4, E1+E3+E4, E2+E3+E4, and E1+E2+E3+E4 are all lower than E1+E2+E5. At 0, E1, Among E2, E3, E4, E5, E1+E2, E1+E3, E1+E4, E1+E5, E2+E3, E2+E4, E2+E5, E3+E4, E3+E5, E1+E2+E3, E1+E2+E4, E1+E3+E4, E2+E3+E4, and E1+E2+E3+E4, E2+E5 and E3+E5 have the largest values, both reaching 120m. 3 If the displacement is adjusted to / min, then the air compressor with displacement is reduced to E2+E5 or E3+E5. In this case, the number combination item corresponding to the displacement parameter adjustment is A2A5, and the computer will start the air compressors numbered A2 and A5, and stop the air compressors numbered A1, A3, and A4. Alternatively, if the number combination item corresponding to the displacement parameter adjustment is A3A5, the computer will start the air compressors numbered A3 and A5, and stop the air compressors numbered A1, A2, and A4.

[0085] Since the current total displacement values ​​E1+E2+E5 correspond to the numbered combination item A1A2A5 and E2+E5 correspond to the numbered combination item A2A5, it is only necessary to shut down the air compressor A1 to change from A1A2A5 to A2A5. Therefore, the numbered combination item A2A5 is preferred.

[0086] S9. First, based on the balanced exhaust volume parameter, sequentially search the exhaust volume summation data table, the power summation data table, and the number combination data table, and select the number combination item corresponding to the same balanced exhaust volume parameter and the smallest power summation value as the balanced number combination parameter; if the balanced number combination parameter here is different from the balanced number combination parameter in S6, discard the balanced number combination parameter in S6 and select the balanced number combination parameter here.

[0087] For example, if the air pressure value remains unchanged, and the current combination parameter is A2A3, then the sum of the current exhaust volumes, E2+E3, is the balanced exhaust volume parameter, and E2+E3=40m³. 3 / min, in the displacement addition data table, E4 is the same as E2+E3, while the power addition value P4 is smaller than P2+P3, P4=250kw, P2+P3=264kw, then the number combination item A4 corresponding to P4 is the balance number combination parameter.

[0088] According to the balance number combination parameters, the computer controls the start and stop status of the air compressor through the control cabinet of the air compressor, and then monitors the start and stop status of the air compressor. If all air compressors are stopped, proceed to S10; if at least one air compressor is in the start state, proceed to S6.

[0089] S10. End the operation of the air compressor station. With all air compressors in the air compressor station stopped and the air pressure in the main air supply pipeline not decreasing, it indicates that the workshop does not require compressed air at this time.

[0090] Based on the actual air pressure values ​​from the air pressure sensor, and combined with the number combination data table, the exhaust volume summation data table, and the power summation data table, the computer automatically finds the optimal air compressor number combination and controls the start and stop status of the air compressor. It has a high degree of automation and high execution efficiency.

[0091] Embodiment 2 of the present invention.

[0092] An energy consumption optimization process for air compressor stations includes the following steps:

[0093] S1. The exhaust port of the air compressor is connected to the air inlet of the air storage tank, the air outlet of the air storage tank is connected to the air inlet of the main air supply pipeline, the main air supply pipeline is equipped with a pressure sensor, the air outlet of the main air supply pipeline is equipped with a valve, the pressure sensor is electrically connected to a display, the display is used to display the air pressure value of the main air supply pipeline, and there are multiple air compressors.

[0094] S2. Obtain the air compressor number, air compressor discharge volume and air compressor power. Perform full combination processing on the air compressor number to obtain a number combination data table, a discharge volume sum data table and a power sum data table. The discharge volume sum values ​​in the discharge volume sum data table and the power sum values ​​in the power sum data table correspond one-to-one.

[0095] S3. Set the upper and lower pressure thresholds;

[0096] Provides a table showing the correspondence between the rate of change of air pressure and the increase or decrease of exhaust volume; the data in the table is input via keyboard and stored in the computer.

[0097] S4. First, close the valve, then start all the air compressors. The air tank stores compressed air. At this time, the air pressure value of the main air supply pipeline rises. Record the current number combination item, the sum of the current exhaust volume and the sum of the current power of the air compressors that are in the start-up state.

[0098] S5. When the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, open the valve;

[0099] S6. Monitor the air pressure value and record the rate of change of the air pressure value. When the air pressure value is lower than the lower air pressure threshold, proceed to S7; when the air pressure value is higher than the upper air pressure threshold, proceed to S8; when the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, proceed to S9.

[0100] S7. First, look up the table corresponding to the rate of change of air pressure value and the increase or decrease of exhaust volume. Combine this with the current exhaust volume sum value to obtain the exhaust volume requirement value. Then, look up the exhaust volume sum data table, select the exhaust volume sum value that is closest to the exhaust volume requirement value, and record it as the exhaust volume increase parameter. Next, look up the number combination data table, select the number combination item corresponding to the exhaust volume increase parameter, and control the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item, and update the current number combination item, the current exhaust volume sum value, and the current power sum value.

[0101] S8. First, look up the table corresponding to the rate of change of air pressure value and the increase or decrease of exhaust volume. Combine this with the current exhaust volume sum value to obtain the exhaust volume requirement value. Then, look up the exhaust volume sum data table, select the exhaust volume sum value that is closest to the exhaust volume requirement value and record it as the exhaust volume reduction parameter. Next, look up the number combination data table, select the number combination item corresponding to the exhaust volume reduction parameter, and control the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume sum value and the current power sum value.

[0102] For example, if the air pressure changes from Q1 to Q2 within one minute, the rate of change is Δq1. In the corresponding table, the displacement increase / decrease corresponding to Δq1 is Δe1. The current displacement sum is E2 + E3, and the required displacement is E2 + E3 + Δe1. In the displacement sum data table, E1 + E2 + E3 + E4 is closest to or equal to E2 + E3 + Δe1. Therefore, the displacement adjustment parameter is E1 + E2 + E3 + E4. In the numbered combination data table, the numbered combination corresponding to the adjusted displacement parameter E1 + E2 + E3 + E4 is A1A2A3A4. At this point, the computer controls the air compressors numbered A1, A2, A3, and A4 to start, and the air compressor numbered A5 to stop. This allows for rapid adjustment of the air compressor's start / stop status.

[0103] Monitor the start / stop status of the air compressors. If all air compressors are stopped, proceed to S10; if at least one air compressor is running, proceed to S6.

[0104] S10. End the operation of the air compressor station.

[0105] For other parts not described, please refer to Embodiment 1 of the present invention.

[0106] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An energy consumption optimization process for an air compressor station, characterized in that, Includes the following steps: S1. The exhaust port of the air compressor is connected to the air inlet of the air storage tank, the air outlet of the air storage tank is connected to the air inlet of the main air supply pipeline, the main air supply pipeline is equipped with a pressure sensor, the air outlet of the main air supply pipeline is equipped with a valve, the pressure sensor is electrically connected to a display, the display is used to display the air pressure value of the main air supply pipeline, and there are multiple air compressors. S2. Obtain the air compressor number, air compressor discharge volume, and air compressor power. Perform a full combination process on the air compressor number to obtain a number combination data table, a discharge volume sum data table, and a power sum data table. The number combination items in the number combination data table, the discharge volume sum value in the discharge volume sum data table, and the power sum value in the power sum data table correspond one-to-one. S3. Set the upper and lower pressure thresholds; S4. First, close the valve, then start all the air compressors. The air tank stores compressed air. At this time, the air pressure value of the main air supply pipeline rises. Record the current number combination item, the sum of the current exhaust volume and the sum of the current power of the air compressors that are in the start-up state. S5. When the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, open the valve; S6. Monitor the air pressure value. When the air pressure value does not change, record the current number combination item as the balanced number combination parameter, and also record the sum of the current exhaust volumes as the balanced exhaust volume parameter. When the air pressure value is lower than the lower air pressure threshold, proceed to S7. When the air pressure value is higher than the upper air pressure threshold, proceed to S8. When the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold, proceed to S9. S7. First, search the exhaust volume summation data table, select the exhaust volume summation value that is higher than the current exhaust volume summation value and is the smallest, and record it as the exhaust volume increase parameter. Then, search the number combination data table, select the number combination item corresponding to the exhaust volume increase parameter, and control the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume summation value and the current power summation value, and go to S6. S8. First, search the exhaust volume summation data table, select the largest exhaust volume summation value that is lower than the current exhaust volume summation value, and record it as the reduced exhaust volume parameter. Then, search the number combination data table, select the number combination item corresponding to the reduced exhaust volume parameter, and control the start / stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item. Update the current number combination item, the current exhaust volume summation value and the current power summation value, and go to S6. S9. First, based on the balanced exhaust volume parameter, sequentially search the exhaust volume summation data table, the power summation data table, and the number combination data table. Select the number combination item corresponding to the same balanced exhaust volume parameter and the smallest power summation value, and record it as the balanced number combination parameter. Then, based on the balanced number combination parameter, control the start and stop status of the air compressor through the air compressor control cabinet. Monitor the start and stop status of the air compressor. If all air compressors are stopped, proceed to S10; if at least one air compressor is in the start state, proceed to S6. S10. End the operation of the air compressor station.

2. The energy consumption optimization process for an air compressor station according to claim 1, characterized in that, Also includes: In S3, a table is provided showing the correspondence between the rate of change of air pressure and the increase or decrease of exhaust volume; Specifically, step S6 involves monitoring the air pressure value, recording the rate of change of the air pressure value, and proceeding to step S7 when the air pressure value is lower than the lower air pressure threshold; proceeding to step S8 when the air pressure value is higher than the upper air pressure threshold; and proceeding to step S9 when the air pressure value is within the range of the upper air pressure threshold and the lower air pressure threshold. Specifically, S7 involves first looking up the table corresponding to the rate of change of air pressure value and the increase or decrease of exhaust volume, combining it with the current exhaust volume sum value to obtain the exhaust volume demand value, then looking up the exhaust volume sum data table, selecting the exhaust volume sum value that is closest to the exhaust volume demand value and recording it as the exhaust volume increase parameter, then looking up the number combination data table, selecting the number combination item corresponding to the exhaust volume increase parameter, and controlling the start and stop status of the air compressor through the control cabinet of the air compressor according to the selected number combination item, and updating the current number combination item, the current exhaust volume sum value and the current power sum value; Specifically, S8 involves first looking up the table corresponding to the rate of change of air pressure and the increase or decrease of exhaust volume, combining it with the current exhaust volume sum value to obtain the required exhaust volume value, then looking up the exhaust volume sum data table, selecting the exhaust volume sum value closest to the required exhaust volume value and recording it as the reduced exhaust volume parameter, then looking up the number combination data table, selecting the number combination item corresponding to the reduced exhaust volume parameter, and controlling the start / stop status of the air compressor through the air compressor control cabinet according to the selected number combination item, and updating the current number combination item, the current exhaust volume sum value, and the current power sum value.

3. The energy consumption optimization process for an air compressor station according to claim 1, characterized in that, Also includes: In step S2, the control cabinet of the air compressor is connected to the computer via a data cable. The computer obtains the air compressor number, air compressor discharge volume, and air compressor power from the control cabinet. The computer performs a full combination processing on the air compressor number to obtain a number combination data table, a discharge volume sum data table, and a power sum data table. The number combination items in the number combination data table, the discharge volume sum values ​​in the discharge volume sum data table, and the power sum values ​​in the power sum data table correspond one-to-one. The computer's display screen also displays the number combination data table, the discharge volume sum data table, and the power sum data table. The barometric pressure sensor is connected to the computer via a data cable, and the display is the computer's screen. The computer controls the start and stop status of the air compressor according to the number combination item. The computer's display screen also displays the current number combination item, the sum of the current exhaust volume and the sum of the current power corresponding to the air compressor in the start state. The valve is an electrically adjustable valve, and its opening and closing states are controlled by the computer.

4. The energy consumption optimization process for an air compressor station according to claim 3, characterized in that, Also includes: In S3, the upper limit threshold and the lower limit threshold of air pressure are input by the keyboard and stored in the computer; In step S5, the computer compares the air pressure value with the upper air pressure threshold and the lower air pressure threshold. The computer executes the process steps S6 to S9.

5. The energy consumption optimization process for an air compressor station according to claim 4, characterized in that, Also includes: In S1, the hot water outlet of the air compressor is connected to the inlet of the main hot water pipeline, the outlet of the main hot water pipeline is connected to the inlet of the cooling tower, the outlet of the cooling tower is connected to the inlet of the water storage tank, the outlet of the water storage tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the main cold water pipeline, the outlet of the main cold water pipeline is connected to the cold water inlet of the air compressor, a water temperature sensor is installed on the main hot water pipeline, and there are multiple water pumps. In step S2, the water temperature sensor is connected to the computer via a data cable, and the computer's display screen also shows the water temperature value of the main hot water pipe; the computer is connected to the water pump controller via a data cable, and the computer controls the start and stop status of the water pump. In S3, the water temperature threshold, the correspondence table between the number of water pumps started and the number of air compressors started are all input by the keyboard and stored in the computer. In step S6, the computer determines the number of air compressors in the start-up state based on the current number combination item, and then determines the number of water pumps to be started based on the correspondence table between the number of water pumps started and the number of air compressors started.

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