CN111120277B - Linkage operation method and system for air compressor unit - Google Patents
Linkage operation method and system for air compressor unit Download PDFInfo
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- CN111120277B CN111120277B CN201911391569.4A CN201911391569A CN111120277B CN 111120277 B CN111120277 B CN 111120277B CN 201911391569 A CN201911391569 A CN 201911391569A CN 111120277 B CN111120277 B CN 111120277B
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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
- F04B41/06—Combinations of two or more pumps
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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
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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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
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
A linkage operation method and a system for an air compressor unit are provided, and the linkage operation method for the air compressor unit comprises the following steps: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a reduced state, the controller controls an electromagnetic valve on an air inlet pipe connected with the air storage tank to be opened; the controller calculates the pressure change rate in the first air supply tank according to the pressure value in the first air supply tank detected by the first air pressure detector; the controller determines the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power; and the controller controls the first air compressor to work at the determined running power. The invention can quickly respond to the gas demand and stably and timely supply high-pressure gas.
Description
Technical Field
The invention relates to the technical field of air compressor control, in particular to a linkage operation method and system for an air compressor unit.
Background
An existing high-pressure factory air supply system generally includes an air tank disposed in a workshop, an air supply station supplying high-pressure air to the air tank, and an air compressor generating high-pressure air. When the air storage tank in the workshop is under-pressure to a certain pressure value, the air storage tank of the air supply station supplies air through a pipeline, and when the pressure of the air storage tank in the air storage station is lower than the under-pressure value, the air compressor starts to work under full load. The process of detecting the underpressure of the air storage tank twice from the shortage of compressed gas in a workshop to the start of the operation of the air compressor causes the delay of pressure supplement at the use end of the workshop. When the workshop consumes a large amount of high-pressure air, the high-pressure air cannot be supplemented in time, and the air pressure supplied by the under-pressure air storage tank in the air storage station cannot meet the requirement of the air storage tank in the workshop, so that the secondary pressure supplementing delay of a use end is caused.
Disclosure of Invention
The invention provides a linkage operation method and a linkage operation system for an air compressor unit, which can quickly respond to gas demand and stably and timely supply high-pressure gas.
According to a first aspect of the present invention, the present invention provides a linkage operation method for an air compressor unit, comprising the steps of: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a reduced state, the controller controls an electromagnetic valve on an air inlet pipe connected with the air storage tank to be opened; the controller calculates the pressure change rate in the first air supply tank according to the pressure value in the first air supply tank detected by the first air pressure detector; the controller determines the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power; and the controller controls the first air compressor to work at the determined running power.
Preferably, the method further comprises the following steps: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a stable state, the controller controls an electromagnetic valve on an air inlet pipe connected with the air storage tank to be closed; when the pressure value in the first air supply tank detected by the first air pressure detector reaches the normal air storage pressure value, the controller controls the first air compressor to stop working.
Preferably, the method further comprises the following steps: and when the determined operation power is larger than the maximum operation power of the first air compressor, the controller controls the second air compressor to start to work, and the sum of the operation powers of the first air compressor and the second air compressor is matched with the determined operation power.
Preferably, the maximum operating power of the second air compressor is greater than or equal to the maximum operating power of the first air compressor, and when the first air compressor and the second air compressor both work, the actual operating power of the first air compressor and the actual operating power of the second air compressor are distributed according to the ratio of the maximum operating power of the first air compressor to the maximum operating power of the second air compressor.
Preferably, the method further comprises the following steps: the controller predicts future gas consumption peak time according to historical gas consumption records of the gas storage tank, and when the time difference between the future gas consumption peak time and the time difference is smaller than a preset time difference, the first air compressor and the second air compressor are controlled to be started until pressure values in the first gas supply tank and the second gas supply tank reach the maximum gas storage pressure value.
Preferably, the controller predicts a future peak gas consumption time according to a historical gas consumption record of the gas storage tank, and specifically includes: screening high-gas consumption records with the gas consumption larger than a preset gas consumption threshold value and gas consumption time periods thereof from historical gas consumption records of the gas storage tank, establishing a fitting function according to distribution of the gas consumption time periods of the high-gas consumption records, and determining future gas consumption peak time according to a gas consumption rule reflected by the fitting function.
Preferably, the method further comprises the following steps: in the predetermined time quantum after with gas peak time, if the actual gas consumption of gas holder does not reach and predicts the gas consumption, the controller carries out the exhaust through first air compressor machine to first gas feed jar until the pressure value in the first gas feed jar reaches normal gas storage pressure value to carry out the exhaust through the second air compressor machine to the second gas feed jar until the pressure value in the second gas feed jar reaches normal gas storage pressure value.
According to a second aspect of the invention, the invention provides a linkage operation system of an air compressor unit, which comprises a plurality of air storage tanks, a controller, and a first air compressor, a first air supply tank, a first air supply pipe and a connecting pipe which are sequentially connected, wherein the air storage tanks are connected with the connecting pipe through the air inlet pipe; the air inlet pipe is provided with an electromagnetic valve, the first air supply pipe is provided with a check valve, the first air supply tank is internally provided with a first air pressure detector, and the air storage tank is internally provided with a third air pressure detector; the solenoid valve, the first air pressure detector and the third air pressure detector are all electrically connected with a controller, and the controller is configured to: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a reduced state, controlling an electromagnetic valve on an air inlet pipe connected with the air storage tank to be opened; calculating the pressure change rate in the first air supply tank according to the pressure value in the first air supply tank detected by the first air pressure detector; determining the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power; and controlling the first air compressor to work at the determined running power.
Preferably, the controller is further configured to: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a stable state, controlling an electromagnetic valve on an air inlet pipe connected with the air storage tank to be closed; and when the pressure value in the first air supply tank detected by the first air pressure detector reaches the normal air storage pressure value, controlling the first air compressor to stop working.
Preferably, air compressor unit linkage operating system still includes second air compressor machine, second air feed jar and second air supply pipe, second air compressor machine, second air feed jar, second air supply pipe and connecting pipe link to each other in order, be provided with the check valve on the second air supply pipe, be provided with the second atmospheric pressure detector of being connected with the controller electricity in the second air feed jar, the controller still disposes and is used for: and when the determined operation power is larger than the maximum operation power of the first air compressor, controlling the second air compressor to start to work, wherein the sum of the operation powers of the first air compressor and the second air compressor is matched with the determined operation power.
According to the invention, once the reduction of the air pressure in the air storage tank is detected, the corresponding electromagnetic valve of the air storage tank is controlled to be opened, the air storage tank is supplemented with pressure through the air supply tank, and the air compressor is started to work according to the change of the air pressure of the air supply tank, so that the air pressure of the air compressor is ensured to be stable, and the air is continuously supplied to the air storage tank. Meanwhile, the running power of the air compressor corresponds to the pressure change rate of the air storage tank, so that the problem of waste caused by running of the air compressor at overhigh power is avoided, and the energy consumption of the system is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a linkage operation system of an air compressor unit according to an embodiment of the present invention;
fig. 2 is a flowchart of a linkage operation method of an air compressor unit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
As shown in fig. 1, the air compressor unit linkage operation system according to the present invention includes a plurality of air tanks 2, a controller 1, and a first air compressor 31, a first air supply tank 41, a first air supply pipe 51, and a connection pipe 6, which are connected in sequence. The gas storage tank 2 is usually placed in a workshop and connected with gas equipment to supply gas to the gas equipment. The number and capacity of the air tanks 2 are configured according to the actual needs of the plant, and five air tanks 2 are illustrated in fig. 1 from the numbers a to E. Each gas storage tank 2 is connected with the connecting pipe 6 through an air inlet pipe 21, each air inlet pipe 21 is provided with an electromagnetic valve 22, the first air supply pipe 51 is provided with a check valve 7, and the electromagnetic valves 22 are in a closed state in a default state, as shown in the figure, five gas storage tanks 2 are correspondingly provided with five electromagnetic valves 22 with numbers A-E. The first air compressor 31 compresses the air and supplies the high-pressure air to the first air supply tank 41. When the solenoid valve 22 of the inlet pipe 21 is opened, the inlet pipe 21 is conducted, the first air supply tank 41 supplies air to the air storage tank 2 connected to the inlet pipe 21 through the connection pipe 6 and the conducted inlet pipe 21, and the check valve 7 prevents the backflow of the air into the first air supply tank 41. Be provided with first atmospheric pressure detector in first air feed jar 41, be provided with third atmospheric pressure detector in the gas holder 2, solenoid valve 22, first atmospheric pressure detector and third atmospheric pressure detector all are connected with controller 1 electricity, first atmospheric pressure detector is used for the atmospheric pressure value in the real-time detection first air feed jar 41 and sends the atmospheric pressure value that detects to controller 1, third atmospheric pressure detector is used for the atmospheric pressure value in the real-time detection gas holder 2 to send the atmospheric pressure value that detects to controller 1, controller 1 can send control command, open or close with the corresponding solenoid valve 22 of control.
The invention provides a linkage operation method of an air compressor unit, which is explained in terms of a controller 1 and comprises the following steps as shown in figure 2:
s100: when the third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a reduced state, the controller controls the electromagnetic valve on the air inlet pipe connected with the air storage tank to be opened.
The air pressure change state in each air storage tank 2 includes three states, which are an air pressure increase state, an air pressure stable state and an air pressure decrease state, the air pressure increase state generally indicates that the first air supply tank 41 is supplying air to the air storage tank 2, the air pressure stable state indicates that the air pressure is maintained within a relatively stable air pressure range and generally indicates that the air storage tank 2 is not used, and the air pressure decrease state generally indicates that the air storage tank 2 is supplying air to the air-using equipment, which results in the air pressure decrease in the air storage tank 2. When one or more air containers 2 are supplied with air, the air pressure in the air containers 2 is reduced. The third air pressure detector detects the air pressure in the air storage tank 2 in real time, and reflects the state of the air pressure change through the air pressure change condition in a predetermined time period, for example, if the air pressure at the start time of the predetermined time period is greater than the air pressure at the end time of the predetermined time period, it is determined that the pressure in the air storage tank 2 is in a reduced state. At this time, the controller 1 opens the solenoid valve 22 of the inlet pipe 21 connected to the air tank 2 with reduced air pressure, and the first air supply tank 41 supplies air to the air tank 2 with reduced air pressure, so that the air pressure of the air tank 2 can be maintained in response to the air pressure change of the air tank 2 immediately, compared with the conventional control method, to continuously supply air.
S200: the controller calculates a pressure change rate in the first gas supply tank according to the pressure value in the first gas supply tank detected by the first gas pressure detector.
Since the first air supply tank 41 supplies air to the air container 2, the air pressure of which is reduced, the pressure in the first air supply tank 41 is also changed accordingly. When the solenoid valve 22 is opened, the controller 1 starts timing, and after the timing reaches the duration of a timing period, the controller 1 calculates the rate of change of the pressure in the first air supply tank 41, typically the average rate of change of the pressure, based on the pressure value in the first air supply tank 41 detected by the first air pressure detector during the timing period. The pressure change rate is expressed as an air supply amount, and the larger the pressure change rate is, the larger the air supply amount of the first air supply tank 41 is, the larger the air consumption amount of the air tank 2 is, and on the contrary, the smaller the air supply amount of the first air supply tank 41 is, the smaller the air consumption amount of the air tank 2 is.
S300: the controller determines the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power.
The controller 1 prestores the mapping relationship between the pressure change rate and the operating power, and may specifically store the mapping relationship in the form of a mapping relationship list, that is, each pressure change rate corresponds to the operating power of the air compressor, and generally, a range of pressure change rates corresponds to one operating power. After the pressure change rate in the first air supply tank 41 is calculated, the operation power mapped by the pressure change rate can be determined by querying the mapping relation list, which indicates that the air compressor will operate at the operation power.
S400: and the controller controls the first air compressor to work at the determined running power.
In a default state, the air pressure in the first air supply tank 41 is stable, and thus, the first air compressor 31 does not operate. When the air pressure in the first air supply tank 41 is changed, the first air compressor 31 is required to be operated to supplement the air pressure in the first air supply tank 41. After determining the operation power mapped by the pressure change rate, the controller 1 controls the first air compressor 31 to start and continue to operate at the determined operation power. Since the operation power corresponds to the pressure change rate, the air supply amount of the first air compressor 31 can satisfy the consumption of the first air supply tank 41, and meanwhile, the first air compressor 31 does not operate at too high power, so that the waste problem caused by the operation of the air compressor at too high power is avoided, and the energy consumption of the system is reduced.
The timing period for calculating the pressure change rate may be set to a short time, for example, 10s, and the controller 1 may calculate the pressure change rate in each timing period in real time to update the determined operation power in real time, so as to control the first air compressor 31 to operate at the latest determined operation power in real time. The timeliness and the stability of high-pressure gas supply are improved, and sudden increase or sudden decrease of the gas consumption can be quickly coped with.
In one embodiment, after step S400, the following steps are further included: the controller 1 calculates the pressure change rate in the gas storage tank 2 within a predetermined time period in real time, if the pressure change rate in the gas storage tank 2 is small and is lower than a minimum threshold value, it is determined that the pressure in the gas storage tank 2 is in a stable state, which indicates that the gas-using equipment may not use the gas in the gas storage tank 2 any more, at this time, the controller 1 controls the corresponding electromagnetic valve 22 of the gas storage tank 2 to close, and the first gas supply tank 41 does not supply gas to the gas storage tank 2 any more. Of course, to further accurately detect whether the gas supply apparatus is no longer supplying gas. A flow meter can be arranged at the air outlet of the air storage tank 2 and electrically connected with the controller 1, and when the flow detected by the flow meter is smaller than a preset threshold value, the air supply tank is considered not to supply air any more. Meanwhile, whether the pressure value in the gas storage tank 2 reaches a normal pressure value is judged, if the pressure value reaches the normal pressure value and the flow detected by the flow meter is smaller than a preset threshold value, the corresponding electromagnetic valve 22 is controlled to be closed, otherwise, the electromagnetic valve 22 needs to be kept in an open state; after the electromagnetic valve 22 is closed, the air pressure in the first air supply tank 41 is not reduced any more, and it can be determined whether the pressure value detected by the first air pressure detector reaches the normal air storage pressure value, if the normal air storage pressure value is reached, it indicates that the first air supply tank 41 does not need the first air compressor 31 to continue air supply, the controller 1 will control the first air compressor 31 to stop working.
In an embodiment, the air compressor unit linkage operation system further includes a second air compressor 32, a second air supply tank 42 and a second air supply pipe 52, the second air compressor 32, the second air supply tank 42, the second air supply pipe 52 and the connecting pipe 6 are sequentially connected, a check valve 7 is also arranged on the second air supply pipe 52, and a second air pressure detector electrically connected with the controller 1 is arranged in the second air supply tank 42. The second air compressor 32 compresses the air and supplies the high pressure air to the second air supply tank 42. When the electromagnetic valve 22 of the air inlet pipe 21 is opened, the air inlet pipe 21 is conducted, the second air supply tank 42 supplies air to the air storage tank 2 through the second air supply pipe 52 and the connecting pipe 6, and the second air supply pipe 52 stops the check valve 7 to prevent the backflow of the air into the second air supply tank 42. The second air pressure detector is used to detect the air pressure value in the second air supply tank 42 in real time and transmit the detected air pressure value to the controller 1.
After step S400, the method for operating the air compressor unit in a linkage manner further includes the following steps: and when the determined operation power is larger than the maximum operation power of the first air compressor, the controller controls the second air compressor to start to work, and the sum of the operation powers of the first air compressor and the second air compressor is matched with the determined operation power.
Since the operation power of the air compressor is limited, when a plurality of air tanks 2 are used, the consumption of the air in the first air supply tank 41 increases, and the operation power of the first air compressor 31 is required to be larger. If the operation power mapped by the pressure change rate in the first air supply tank 41 is greater than the maximum operation power of the first air compressor 31, the controller 1 controls the second air compressor 32 to start to operate, the first air compressor 31 and the second air compressor 32 operate simultaneously to supply air to the first air supply tank 41 and the second air supply tank 42 respectively, and the sum of the operation powers of the first air compressor 31 and the second air compressor 32 may be the same as the determined operation power, so that the power consumption of the system is not increased. When the determined operation power is less than the maximum operation power of the first air compressor 31, the second air compressor 32 may be controlled to stop operating.
Further, the maximum operating power of the second air compressor 32 is set to be greater than or equal to the maximum operating power of the first air compressor 31, the second air compressor 32 can be a main air compressor, air is supplied when the air consumption is large, the first air compressor 31 can be a maintenance air compressor, and air pressure is maintained when the air consumption is small. When the operation power mapped by the pressure change rate in the first air supply tank 41 is greater than the maximum operation power of the first air compressor 31, both the first air compressor 31 and the second air compressor 32 operate, at this time, the ratio of the maximum operation power of the first air compressor 31 to the maximum operation power of the second air compressor 32 is equal to the ratio of the actual operation power of the first air compressor 31 to the actual operation power of the second air compressor 32, and the sum of the operation power of the first air compressor 31 to the operation power of the second air compressor 32 is equal to the determined operation power. For example, the maximum operating power of the first air compressor 31 is 50kw, the maximum operating power of the second air compressor 32 is 100kw, and when the determined operating power is 120kw, the actual operating power of the first air compressor 31 is set to 40kw, and the actual operating power of the second air compressor 32 is set to 80 kw. Therefore, the two air compressors can work at relatively moderate running power, so that a certain air compressor is prevented from running at the maximum running power for a long time, and the service life of the air compressor can be effectively prolonged.
On the basis of the above embodiment, the method further comprises the following steps: the controller predicts future gas consumption peak time according to historical gas consumption records of the gas storage tank, and when the time difference between the future gas consumption peak time and the time difference is smaller than a preset time difference, the first air compressor and the second air compressor are controlled to be started until pressure values in the first gas supply tank and the second gas supply tank reach the maximum gas storage pressure value.
The controller 1 can be connected with a memory, a flow meter is arranged at an air outlet of each air storage tank 2 and used for detecting the air supply quantity of each air storage tank 2, the controller 1 can calculate the total air consumption of each preset air consumption period, such as the air consumption per hour, the memory is used for storing the calculated total air consumption of the air storage tanks 2 in real time, the total air consumption can be stored in a form of a recording table, the air consumption per hour is clearly reflected, and a historical air consumption record of the air storage tanks 2 is formed. For plants with relatively regular work and rest hours, the gas consumption of the gas storage tanks 2 has certain regularity, for example, for plants which only work during the day, the working hours during the day are relatively fixed, and the gas consumption peak is generally met at a predetermined time after the working hours are started. When the recorded time is long enough, the controller can predict the future peak time of gas consumption through the rule reflected by the historical gas consumption record. Therefore, air can be supplied in advance to correspond to the peak of air consumption. Specifically, controller 1 judges whether the time difference between the real-time and the peak time of gas consumption is less than the preset time difference, and when the time difference between the real-time and the peak time of gas consumption is less than the preset time difference, it indicates that the peak time of gas consumption is about to come, at this moment, first air compressor 31 and second air compressor 32 can be controlled to both open and operate until the pressure values in first gas supply tank 41 and second gas supply tank 42 all reach the maximum gas storage pressure value, that is, when first gas supply tank 41 and second gas supply tank 42 are both filled with gas, first air compressor 31 and second air compressor 32 will stop operating. The operation power of the first air compressor 31 and the second air compressor 32 should be satisfied, and the pressure values in the first air supply tank 41 and the second air supply tank 42 should be raised to the maximum storage pressure value within the preset time difference.
The controller predicts the peak time of future gas consumption according to the historical gas consumption record of the gas storage tank, and the method is realized by the following steps: screening high-gas consumption records with the gas consumption larger than a preset gas consumption threshold value and gas consumption time periods thereof from historical gas consumption records of the gas storage tank, establishing a fitting function according to distribution of the gas consumption time periods of the high-gas consumption records, and determining future gas consumption peak time according to a gas consumption rule reflected by the fitting function.
And setting a gas consumption threshold, and identifying the time period when the gas consumption is greater than the gas consumption threshold as a gas consumption peak time period. The controller 1 can search in historical gas records, screen out high-gas records with gas consumption larger than the preset gas consumption threshold value in a single gas consumption cycle, and determine the gas consumption and the gas consumption time period recorded in the high-gas records, so that the high-gas records are distributed on a time axis in a scattered manner, a fitting function can be established according to the gas consumption and the gas consumption time period of the high-gas records, and the fitting function reflects the trend of the high-gas consumption on the time axis. And in the future time period, searching a time period corresponding to the gas consumption which is greater than a preset gas consumption threshold value on the fitting function, wherein the time period is the future gas consumption peak time.
After the peak time of gas consumption is determined, whenever the peak time of gas consumption is reached, the first air compressor 31 and the second air compressor 32 are both started to operate, and the pressure values in the first gas supply tank 41 and the second gas supply tank 42 reach the maximum gas storage pressure value. If the gas usage does not reach the peak usage at the determined peak usage time, the first gas cylinder 41 and the second gas cylinder 42 maintain the maximum storage pressure value, which is detrimental to the service life of the gas cylinders, and therefore, it is necessary to add a fault tolerance mechanism.
On the basis of the embodiment, the method further comprises the following steps: and judging whether the actual gas consumption of the gas storage tank 2 reaches the estimated gas consumption within a preset time period after the determined gas consumption peak time, if not, indicating that the gas consumption peak does not occur, and exhausting the first gas supply tank 41 by the controller 1 through the first air compressor 31 until the pressure value in the first gas supply tank 41 reaches the normal gas storage pressure value, and exhausting the second gas supply tank 42 by the second air compressor 32 until the pressure value in the second gas supply tank 42 reaches the normal gas storage pressure value.
In one embodiment, the controller 1 is further connected with a wireless communication module 8, and the wireless communication module 8 may be a 4G module. The controller 1 can be connected to the terminal equipment of the user, for example, a mobile phone, through the wireless communication module 8. The terminal equipment can send out a control instruction to control the air compressor and the electromagnetic valve in the air compressor set linkage operation system, and the controller 1 can feed back detected or recorded information to the terminal equipment.
The user can set a gas using schedule on the terminal device, the gas using schedule comprises gas using time and gas using amount, the controller 1 can receive the gas using schedule of the user, a gas using plan is made according to the gas using schedule, and the air compressor and the electromagnetic valve are controlled to act according to the gas using plan. Specifically, in a predetermined time period before each gas using time comes, whether the surplus in the gas storage tank 2 and the gas supply tank meets the gas using amount corresponding to the gas using time is detected, and if the surplus in the gas storage tank 2 and the gas supply tank cannot meet the gas using amount corresponding to the gas using time, the air compressor is controlled to operate until the surplus in the gas storage tank 2 and the gas supply tank meets the gas using amount corresponding to the gas using time. The gas supply tank can be connected with a spare gas tank, and when the surplus of the gas storage tank 2 and the gas supply tank is larger than the gas consumption corresponding to the gas consumption time and the gas consumption is stable in a plurality of preset gas consumption times after the gas consumption time, the excessive gas in the gas supply tank is stored in the spare gas tank. When the interval between two adjacent gas using time is larger than the preset time, the high-pressure gas in the gas storage tank 2 and the gas supply tank can be exhausted after the last gas using time is finished.
The embodiment of the invention also provides a linkage operation system of an air compressor unit, as shown in fig. 1, which comprises a plurality of air storage tanks 2, a controller 1, and a first air compressor 31, a first air supply tank 41, a first air supply pipe 51 and a connecting pipe 6 which are connected in sequence. The gas storage tank 2 is usually placed in a workshop and connected with gas equipment to supply gas to the gas equipment. The number and capacity of the air tanks 2 are configured according to the actual needs of the plant, and five air tanks 2 are illustrated in fig. 1 from the numbers a to E. Each gas storage tank 2 is connected with the connecting pipe 6 through a gas inlet pipe 21, each gas inlet pipe 21 is provided with a solenoid valve 22, the first gas supply pipe 51 is provided with a check valve 7, and the solenoid valves 22 are in a closed state in a default state. The first air compressor 31 compresses the air and supplies the high-pressure air to the first air supply tank 41. When the solenoid valve 22 of the inlet pipe 21 is opened, the inlet pipe 21 is conducted, the first air supply tank 41 supplies air to the air storage tank 2 connected to the inlet pipe 21 through the connection pipe 6 and the conducted inlet pipe 21, and the check valve 7 prevents the backflow of the air into the first air supply tank 41. Be provided with first atmospheric pressure detector in first air feed jar 41, be provided with third atmospheric pressure detector in the gas holder 2, solenoid valve 22, first atmospheric pressure detector and third atmospheric pressure detector all are connected with controller 1 electricity, first atmospheric pressure detector is used for the atmospheric pressure value in the real-time detection first air feed jar 41 and sends the atmospheric pressure value that detects to controller 1, third atmospheric pressure detector is used for the atmospheric pressure value in the real-time detection gas holder 2 to send the atmospheric pressure value that detects to controller 1, controller 1 can send control command, open or close with the corresponding solenoid valve 22 of control.
The controller is configured to: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a reduced state, controlling an electromagnetic valve on an air inlet pipe connected with the air storage tank to be opened; calculating the pressure change rate in the first gas supply tank according to the pressure value in the first gas supply tank detected by the first gas pressure detector; determining the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power; and controlling the first air compressor to work at the determined running power.
In one embodiment, the controller is further configured to: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a stable state, controlling an electromagnetic valve on an air inlet pipe connected with the air storage tank to be closed; and when the pressure value in the first air supply tank detected by the first air pressure detector reaches the normal air storage pressure value, controlling the first air compressor to stop working.
In one embodiment, the air compressor unit linkage operation system further comprises a second air compressor, a second air supply tank and a second air supply pipe, the second air compressor, the second air supply tank, the second air supply pipe and the connecting pipe are sequentially connected, a check valve is arranged on the second air supply pipe, a second air pressure detector electrically connected with the controller is arranged in the second air supply tank, and the controller is further configured to: and when the determined operation power is larger than the maximum operation power of the first air compressor, controlling the second air compressor to start to work, wherein the sum of the operation powers of the first air compressor and the second air compressor is matched with the determined operation power.
In one embodiment, the maximum operating power of the second air compressor is greater than or equal to the maximum operating power of the first air compressor, and when the first air compressor and the second air compressor are both operated, the actual operating power of the first air compressor and the actual operating power of the second air compressor are distributed according to the ratio of the maximum operating power of the first air compressor to the maximum operating power of the second air compressor.
In one embodiment, the controller is further configured to: the controller predicts future gas consumption peak time according to historical gas consumption records of the gas storage tank, and when the time difference between the future gas consumption peak time and the time difference is smaller than a preset time difference, the first air compressor and the second air compressor are controlled to be started until pressure values in the first gas supply tank and the second gas supply tank reach the maximum gas storage pressure value.
In one embodiment, the controller is further configured to: screening high-gas consumption records with the gas consumption larger than a preset gas consumption threshold value and gas consumption time periods thereof from historical gas consumption records of the gas storage tank, establishing a fitting function according to distribution of the gas consumption time periods of the high-gas consumption records, and determining future gas consumption peak time according to a gas consumption rule reflected by the fitting function.
In one embodiment, the controller is further configured to: in the predetermined time quantum after with gas peak time, if the actual gas consumption of gas holder does not reach and predicts the gas consumption, the controller carries out the exhaust through first air compressor machine to first gas feed jar until the pressure value in the first gas feed jar reaches normal gas storage pressure value to carry out the exhaust through the second air compressor machine to the second gas feed jar until the pressure value in the second gas feed jar reaches normal gas storage pressure value.
For specific description of the air compressor unit linkage operation system, reference may be made to the embodiment of the air compressor unit linkage operation method part, which is not described herein again.
The foregoing is a more detailed description of the present invention with reference to specific embodiments thereof, and it is not intended to limit the invention to the specific embodiments thereof. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.
Claims (7)
1. An operation method of a linkage operation system of an air compressor unit is characterized by comprising the following steps: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a reduced state, the controller controls an electromagnetic valve on an air inlet pipe connected with the air storage tank to be opened; the controller calculates the pressure change rate in the first air supply tank according to the pressure value in the first air supply tank detected by the first air pressure detector; the controller determines the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power; the controller controls the first air compressor to work at the determined operation power, wherein the air compressor unit linkage operation system comprises a plurality of air storage tanks, the controller, and the first air compressor, the first air supply tank, the first air supply pipe and the connecting pipe which are sequentially connected, and the air storage tanks are connected with the connecting pipe through air inlet pipes; the air inlet pipe is provided with an electromagnetic valve, a first air supply tank is connected with a connecting pipe through a first air supply pipe, the first air supply pipe is provided with a check valve, a first air pressure detector is arranged in the first air supply tank, and a third air pressure detector is arranged in the air storage tank; solenoid valve, first atmospheric pressure detector and third atmospheric pressure detector all are connected with the controller electricity, air compressor unit linkage operation system still includes second air compressor machine, second air feed jar and second air supply pipe, second air compressor machine, second air feed jar, second air supply pipe and connecting pipe link to each other in order, be provided with the check valve on the second air supply pipe, be provided with the second atmospheric pressure detector of being connected with the controller electricity in the second air feed jar.
2. The method of operation of claim 1, further comprising the steps of: when a third air pressure detector in the air storage tank detects that the pressure in the air storage tank is in a stable state, the controller controls an electromagnetic valve on an air inlet pipe connected with the air storage tank to be closed; when the pressure value in the first air supply tank detected by the first air pressure detector reaches the normal air storage pressure value, the controller controls the first air compressor to stop working.
3. The method of operation of claim 1, further comprising the steps of: and when the determined operation power is larger than the maximum operation power of the first air compressor, the controller controls the second air compressor to start to work, and the sum of the operation powers of the first air compressor and the second air compressor is matched with the determined operation power.
4. The method of operation of claim 3, wherein: the maximum operating power of the second air compressor is larger than or equal to the maximum operating power of the first air compressor, and when the first air compressor and the second air compressor work, the actual operating power of the first air compressor and the actual operating power of the second air compressor are distributed according to the ratio of the maximum operating power of the first air compressor to the maximum operating power of the second air compressor.
5. The method of operation of claim 1, further comprising the steps of: the controller predicts future gas consumption peak time according to historical gas consumption records of the gas storage tank, and when the time difference from the future gas consumption peak time is smaller than a preset time difference, the first air compressor and the second air compressor are controlled to be started to work until pressure values in the first gas supply tank and the second gas supply tank reach the maximum gas storage pressure value.
6. The operating method according to claim 5, wherein the step of estimating a future peak gas usage time by the controller based on historical gas usage records of the gas storage tank comprises: screening high-gas consumption records with the gas consumption larger than a preset gas consumption threshold value and gas consumption time periods thereof from historical gas consumption records of the gas storage tank, establishing a fitting function according to distribution of the gas consumption time periods of the high-gas consumption records, and determining future gas consumption peak time according to a gas consumption rule reflected by the fitting function.
7. The method of operation of claim 5, further comprising the steps of: in the predetermined time quantum after with gas peak time, if the actual gas consumption of gas holder does not reach and predicts the gas consumption, the controller carries out the exhaust through first air compressor machine to first gas feed jar until the pressure value in the first gas feed jar reaches normal gas storage pressure value to carry out the exhaust through the second air compressor machine to the second gas feed jar until the pressure value in the second gas feed jar reaches normal gas storage pressure value.
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| CN114517784B (en) * | 2020-11-19 | 2023-03-14 | 比亚迪股份有限公司 | Air compressor control system and method and vehicle |
| CN112944215A (en) * | 2021-01-22 | 2021-06-11 | 浙江临安曙光印务有限公司 | Centralized gas supply system |
| CN114109777B (en) * | 2021-12-02 | 2022-06-24 | 广东鑫钻节能科技股份有限公司 | Electric energy management system for air compression station |
| CN114151314A (en) * | 2021-12-14 | 2022-03-08 | 中国核工业二四建设有限公司 | Air compressor system, control system and control method |
| CN114352511B (en) * | 2021-12-28 | 2024-02-23 | 南京尚爱机械制造有限公司 | Method for reducing idle load of air compressor in multi-machine operation of air compressor |
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