CN114562451A - Method and device for adjusting load of reciprocating compressor unit, terminal and medium - Google Patents
Method and device for adjusting load of reciprocating compressor unit, terminal and medium Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F04B49/065—Control using electricity and making use of computers
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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
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
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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
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/022—Stopping, starting, unloading or idling control by means of pressure
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Abstract
The application provides a method, a device, a terminal and a medium for adjusting the load of a reciprocating compressor unit, and belongs to the technical field of computers. The method comprises the following steps: acquiring a target tank pressure interval to which a current tank pressure signal value belongs, wherein one tank pressure interval corresponds to one load value of one compressor; determining target load state information according to the target tank pressure interval, wherein the target load state information is used for indicating the target start-stop state and the target load value of each compressor in the compressor unit; and in response to the fact that the target load state information is inconsistent with the actual load state information, gradually adjusting the load value and the start-stop state of each compressor according to the target load state information. According to the technical scheme, the load state of each compressor in the compressor unit can be timely adjusted step by step according to the current tank pressure signal value, manual intervention is not needed, the probability of misoperation is reduced, the reliability and the accuracy are improved, and potential safety hazards are avoided.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method and an apparatus for adjusting a load of a reciprocating compressor unit, a terminal, and a medium.
Background
As a typical displacement compressor, a reciprocating compressor is widely used in the fields of petroleum, natural gas, chemical industry, and the like. Particularly in large cryogenic (e.g., lng, lpg, etc.) storage tank areas, it is common to handle boil-off gas from environmental heat leaks in storage tanks to control the storage tank pressure within an operational safety range. When the compressed air volume exceeds the capacity of a single reciprocating engine, other parallel compressor sets are usually started to meet the air volume requirement. If the air quantity is low, only one compressor is operated; as the air quantity increases, the number of the running compressors increases; and the whole compressor set is completely put into use until the gas quantity is close to the peak value. Therefore, the adjusting mode and the control effect of the load of the reciprocating compressor set have very important significance for maintaining the safety of the storage tank.
At present, the load regulation of a single reciprocating compressor is generally realized by adopting a clearance regulation and unloader cooperation mode, and the single load is regulated from 25%, 50%, 75% to 100% step by step. The gradual conversion of single load of the reciprocating compressor and the adjustment of the current running number of the compressor units adopt a manual Control mode, namely, an operator manually controls the load of the compressor through a picture of a Distributed Control System (DCS) to maintain the pressure stability of the storage tank System.
The problem that above-mentioned embodiment exists is that compressor start-up and shut down need manual intervention, and intensity of labour is high, the maloperation probability is big, and the control of load adjustment relies on experience operation more, leads to reliability and accuracy lower, influences the energy consumption level of device and may even cause the potential safety hazard.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal and a storage medium for adjusting the load of a reciprocating compressor unit, which can adjust the load state of each compressor in the compressor unit in time according to the current tank pressure signal value without manual intervention, thereby reducing the probability of misoperation, improving the reliability and accuracy and avoiding potential safety hazards. The technical scheme is as follows:
in one aspect, a method for adjusting a load of a reciprocating compressor unit is provided, and the method includes:
acquiring a target tank pressure interval to which a current tank pressure signal value belongs, wherein one tank pressure interval corresponds to one load value of one compressor;
determining target load state information according to the target tank pressure interval, wherein the target load state information is used for indicating target start-stop states and target load values of all compressors in a compressor unit;
and in response to the fact that the target load state information is not consistent with the actual load state information, adjusting the load value and the start-stop state of each compressor according to the target load state information, wherein the actual load state information is used for indicating the actual start-stop state and the actual load value of each compressor.
In an optional implementation manner, the step-by-step adjusting the load value and the start-stop state of each compressor according to the target load state information in response to that the target load state information does not coincide with the actual load state information includes:
responding to the inconsistency between the target load state information and the actual load state information, and acquiring the current load value of a target compressor, wherein the target compressor is a compressor which is started in a compressor unit and is started recently;
and according to the target load state information, at least one of the load value of a target compressor, the start-stop state of the target compressor and the start-stop states of other compressors adjacent to the target compressor in the starting sequence is adjusted step by step from the current load value.
In an optional implementation manner, the step of adjusting at least one of a load value of a target compressor, a start-stop state of the target compressor, and start-stop states of other compressors whose start sequences are adjacent to the target compressor from the current load value according to the target load state information includes:
acquiring a first tank pressure interval corresponding to the current load value of the target compressor;
and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the first tank pressure interval and not larger than the upper limit value of a second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, wherein the second tank pressure interval is a tank pressure interval corresponding to the highest load value of the target compressor.
In an optional implementation manner, the step of adjusting at least one of a load value of a target compressor, a start-stop state of the target compressor, and start-stop states of other compressors whose start sequences are adjacent to the target compressor from the current load value according to the target load state information includes:
acquiring a first tank pressure interval corresponding to the current load value of the target compressor;
and in response to the fact that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the first tank pressure interval and not smaller than the lower limit value of a third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, wherein the third tank pressure interval is a tank pressure interval corresponding to the lowest load value of the target compressor.
In an optional implementation manner, the step of adjusting at least one of a load value of a target compressor, a start-stop state of the target compressor, and start-stop states of other compressors whose start sequences are adjacent to the target compressor from the current load value according to the target load state information includes:
acquiring a second tank pressure interval corresponding to the highest load value of the target compressor;
and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, and starting the first compressor, wherein the starting sequence of the first compressor is adjacent to and behind the target compressor.
In an optional implementation manner, the step of adjusting at least one of a load value of a target compressor, a start-stop state of the target compressor, and start-stop states of other compressors whose start sequences are adjacent to the target compressor from the current load value according to the target load state information includes:
acquiring a third tank pressure interval corresponding to the lowest load value of the target compressor;
and in response to the lower limit value of the target tank pressure interval being smaller than the lower limit value of the third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, and closing the target compressor.
In an optional implementation, the method further includes:
responding to the continuous increase of the tank pressure signal value to the upper limit value of the target tank pressure interval, and outputting a load increasing signal, wherein the load increasing signal is used for indicating a target compressor to increase the load, and the target compressor is a compressor which is started in a compressor unit and is started recently;
and responding to the continuous reduction of the tank pressure signal value to the lower limit value of the target tank pressure interval, and outputting a load reduction signal, wherein the load reduction signal is used for indicating the target compressor to reduce the load.
In another aspect, there is provided an apparatus for adjusting a load of a reciprocating compressor set, the apparatus comprising:
the acquisition module is used for acquiring a target tank pressure interval to which the current tank pressure signal value belongs, and one tank pressure interval corresponds to one load value of one compressor;
the determining module is used for determining target load state information according to the target tank pressure interval, wherein the target load state information is used for indicating a target start-stop state and a target load value of each compressor in the compressor unit;
and the adjusting module is used for responding to the inconsistency between the target load state information and the actual load state information, and gradually adjusting the load value and the start-stop state of each compressor according to the target load state information, wherein the actual load state information is used for indicating the actual start-stop state and the actual load value of each compressor.
In an optional implementation manner, the adjusting module includes:
the obtaining unit is used for responding to the inconsistency between the target load state information and the actual load state information, and obtaining the current load value of a target compressor, wherein the target compressor is a compressor which is started in the compressor unit and is started recently;
and the adjusting unit is used for adjusting at least one of the load value of the target compressor, the start-stop state of the target compressor and the start-stop states of other compressors adjacent to the target compressor in the starting sequence from the current load value step by step according to the target load state information.
In an optional implementation manner, the adjusting unit is configured to obtain a first tank pressure interval corresponding to a current load value of the target compressor; and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the first tank pressure interval and not larger than the upper limit value of a second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, wherein the second tank pressure interval is a tank pressure interval corresponding to the highest load value of the target compressor.
In an optional implementation manner, the adjusting unit is configured to obtain a first tank pressure interval corresponding to a current load value of the target compressor; and in response to the fact that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the first tank pressure interval and not smaller than the lower limit value of a third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, wherein the third tank pressure interval is a tank pressure interval corresponding to the lowest load value of the target compressor.
In an optional implementation manner, the adjusting unit is configured to obtain a second tank pressure interval corresponding to a highest load value of the target compressor; and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, and starting the first compressor, wherein the starting sequence of the first compressor is adjacent to and behind the target compressor.
In an optional implementation manner, the adjusting unit is configured to obtain a third tank pressure interval corresponding to the lowest load value of the target compressor; and in response to the lower limit value of the target tank pressure interval being smaller than the lower limit value of the third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, and closing the target compressor.
In an optional implementation, the apparatus further includes:
the signal output module is used for responding to the situation that the tank pressure signal value continuously rises to the upper limit value of the target tank pressure interval, and outputting a load increasing signal, wherein the load increasing signal is used for indicating a target compressor to increase the load, and the target compressor is a compressor which is started in a compressor unit and is started recently;
the signal output module is further used for responding to the fact that the tank pressure signal value is continuously reduced to a lower limit value of the target tank pressure interval, and outputting a load reduction signal, wherein the load reduction signal is used for indicating the target compressor to reduce the load.
In another aspect, a terminal is provided, where the terminal includes a processor and a memory, where the memory is used to store at least one piece of computer program, and the at least one piece of computer program is loaded by the processor and executed to implement the operations executed in the reciprocating compressor group load adjusting method in the embodiment of the present application.
In another aspect, a computer-readable storage medium is provided, where at least one segment of a computer program is stored, and the at least one segment of the computer program is loaded and executed by a processor to implement the operations performed in the method for adjusting a load of a reciprocating compressor unit in the embodiment of the present application.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
in the embodiment of the application, the method for adjusting the load of the reciprocating compressor unit is provided, and the load states of the compressors in the compressor unit can be timely adjusted step by step according to the current tank pressure signal value by setting the tank pressure intervals corresponding to the load values of the compressors, so that manual intervention is not needed, the probability of misoperation is reduced, the reliability and the accuracy are improved, and the potential safety hazard is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an implementation environment of a method for adjusting a load of a reciprocating compressor unit according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for adjusting the load of a reciprocating compressor set according to an embodiment of the present application;
FIG. 3 is a logic diagram of a reciprocating compressor package load regulation according to an embodiment of the present application;
FIG. 4 is a block diagram of a reciprocating compressor load adjustment device according to an embodiment of the present application;
fig. 5 is a block diagram of a terminal according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Hereinafter, terms appearing in the embodiments of the present application are introduced.
DCS, Distributed Control System, decentralized Control System is a new generation of instrument Control System based on microprocessor and adopting the design principle of decentralized Control function, centralized display operation, and giving consideration to both autonomous and comprehensive coordination. The distributed control system is called DCS for short, and can also be translated into a distributed control system or a distributed computer control system. The method adopts the basic design idea of controlling dispersion, operation and management centralization and adopts a structural form of multilayer grading, cooperation and autonomy. Its main features are its centralized management and decentralized control. DCS is widely applied to various industries such as electric power, metallurgy, petrochemical industry and the like at present.
Hereinafter, an implementation environment of the method for adjusting the load of the reciprocating compressor set according to the embodiment of the present application will be described. Fig. 1 is a schematic diagram of an implementation environment of a method for adjusting a load of a reciprocating compressor unit according to an embodiment of the present application. Referring to fig. 1, the implementation environment includes a terminal 101 and a reciprocating compressor package 102.
The terminal 101 and the reciprocating compressor string 102 can be directly or indirectly connected through wired or wireless communication, and the present application is not limited thereto.
Optionally, the terminal 101 is a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like, but is not limited thereto. The terminal 101 is installed and operated with an application program supporting control of the reciprocating compressor set 102, and the application program is capable of monitoring real-time parameters of the reciprocating compressor set 102 and controlling the start-stop state of each compressor set in the reciprocating compressor set. Optionally, the application program is a DCS (Distributed Control System), or other automation Control systems, which is not limited in this embodiment of the present application.
Optionally, the reciprocating compressor unit 102 includes a plurality of reciprocating compressors, a single reciprocating compressor can perform load adjustment in a manner of cooperation between clearance adjustment and an unloader, the load adjustment range is large, and the single load is adjusted from 25%, 50%, 75% to 100% step by step. Of course, more adjustment stages can be divided, and the embodiment of the present application does not limit this.
In the embodiment of the application, the reciprocating compressor unit comprises a plurality of reciprocating compressors, and each reciprocating compressor operates in a parallel mode. When the air quantity is low, only one compressor is operated; as the air quantity increases, when one compressor is not enough to meet the air quantity requirement, the running number of the compressors is increased one by one; and the whole compressor set is completely put into use until the gas quantity is close to the peak value. The capacity of the reciprocating compressor is generally designed according to the maximum volume flow working condition required by a process system, and in the actual operation process, the fluctuation of the evaporation gas quantity in the storage tank is frequent due to the change of the operation working condition (such as component change, environmental temperature, volume replacement and flash evaporation caused by material inlet and outlet, and the like), and the actual demand of the reciprocating compressor is often smaller than the design value, so that the reciprocating compressor does not operate in a full load state at all times, and the requirement of load regulation is provided for the compressor. The embodiment of the application provides a method for adjusting the load of a reciprocating compressor unit, which can timely adjust the load state of each compressor in the compressor unit step by step according to the current tank pressure signal value, does not need manual intervention, reduces the probability of misoperation, improves the reliability and accuracy, and avoids potential safety hazards. Referring to fig. 2, fig. 2 is a flowchart illustrating a method for adjusting a load of a reciprocating compressor set according to an embodiment of the present disclosure. As shown in fig. 2, the present embodiment is described with an example of application to a terminal. The method for adjusting the load of the reciprocating compressor unit comprises the following steps:
201. the terminal acquires a target tank pressure interval to which the current tank pressure signal value belongs, and one tank pressure interval corresponds to one load value of one compressor.
In the embodiment of the present application, the load of each compressor is divided into a plurality of gears, and each compressor corresponds to a plurality of load values, such as 25%, 50%, 75% and 100%. Then the pressure of the storage tank is divided into a plurality of tank pressure intervals, and each tank pressure interval corresponds to a load value of one compressor.
For example, taking a compressor unit including three parallel reciprocating compressors as an example, the correspondence between the load value and the tank pressure interval is shown in table 1.
TABLE 1
As shown in table 1, the start-up sequence for compressor a, compressor B and compressor C is: compressor a first, compressor B second, compressor C third. Ya represents a trigger value for starting the compressor A, namely when the current tank pressure signal value exceeds Ya, the compressor A is started. Yb represents a trigger value for starting the compressor B, i.e., when the current tank pressure signal value exceeds Yb, the compressor B is started. Yc represents a trigger value for starting the compressor C, i.e., when the current tank pressure signal value exceeds Yc, the compressor C is started. Na represents a trigger value for closing the compressor A, namely when the current tank pressure signal value is smaller than Na, the compressor A is closed. And Nb is a trigger value for closing the compressor B, namely when the current tank pressure signal value is less than Nb, the compressor B is closed. Nc represents a trigger value for turning off the compressor C, that is, when the current tank pressure signal value is smaller than Nc, the compressor C is turned off. The load values for each compressor are 25%, 50%, 75% and 100%.
Ya < U1< U2< U3< Yb < U4< U5< U6< Yc < U7< U8< U9, which indicates the upper limit value of the tank pressure interval; na < D1< D2< D3< Nb < D4< D5< D6< Nc < D7< D8< D9 represents the lower limit value of the tank pressure interval. Further, Ni < Yi, i ═ a, b, c indicates that the lower limit value of the tank pressure section corresponding to the lowest load value of the compressor following the start order is smaller than the upper limit value of the tank pressure section corresponding to the highest load value of the compressor adjacent and preceding the start order, that is, only if the current tank pressure signal value exceeds the upper limit value of the tank pressure section corresponding to the highest load value of the compressor, the new compressor is started. It should be noted that Dj < Uj, j is 1,2,3 … 9, and indicates that two tank pressure sections corresponding to two adjacent load values of the same compressor intersect, but do not completely overlap, so that the compressor is prevented from frequently increasing or decreasing the load when the current tank pressure signal value is floating around the upper (lower) limit.
202. And the terminal determines target load state information according to the target tank pressure interval, wherein the target load state information is used for indicating the target start-stop state and the target load value of each compressor in the compressor unit.
In the embodiment of the application, the terminal can determine the target start-stop state and the target load value of each compressor under the current tank pressure signal value according to the determined target tank pressure interval.
For example, if the target tank pressure interval is Na-U1, compressor a is in the on state and the load value is 25%; compressor B and compressor C are in a shutdown state. If the target tank pressure interval is D4-U5, the compressor A is in a starting state and the load value is 100%; the compressor B is in a starting state, and the load value is 50%; the compressor C is in a stopped state. If the target tank pressure interval is D8-U9, the compressor A is in a starting state, and the load value is 100%; the compressor B is in a starting state, and the load value is 100%; the compressor C is in the start-up state and the load value is 75%.
203. And in response to the fact that the target load state information is inconsistent with the actual load state information, the terminal adjusts the load value and the start-stop state of each compressor step by step according to the target load state information, wherein the actual load state information is used for indicating the actual start-stop state and the actual load value of each compressor.
In this embodiment, after obtaining the target load state information, the terminal may determine whether the target load value and the target start-stop state of each compressor indicated by the target load state information match the actual start-stop state and the actual load value of each compressor indicated by the actual load state information. If the current load state of each compressor is consistent with the current load state of each compressor, the terminal maintains the current load state of each compressor unchanged; if the target load value of any compressor is higher than the actual load value, the terminal carries out load increasing operation and increases the actual load value to the target load value; and if the target load value of any compressor is lower than the actual load value, the terminal carries out load reduction operation and reduces the actual load value to the target load value.
And when the terminal adjusts the load value and the start-stop state of each compressor step by step, the terminal starts to adjust from a target compressor, wherein the target compressor is a compressor which is started in the compressor unit and is started recently. Correspondingly, in response to the fact that the target load state information does not accord with the actual load state information, the terminal first obtains the current load value of the target compressor. And then, according to the target load state information, at least one of the load value of the target compressor, the start-stop state of the target compressor and the start-stop states of other compressors adjacent to the target compressor in the start sequence is adjusted step by step from the current load value.
Optionally, when the target start-stop state of each compressor indicated by the target load state information is the same as the actual start-stop state indicated by the actual load state information, and the target load value of the target compressor is greater than the actual load value. The terminal firstly acquires a first tank pressure interval corresponding to the current load value of the target compressor. And responding to the condition that the upper limit value of the target tank pressure interval is larger than the upper limit value of the first tank pressure interval and is not larger than the upper limit value of a second tank pressure interval, and gradually increasing the load value of the target compressor from the current load value by the terminal, wherein the second tank pressure interval is the tank pressure interval corresponding to the highest load value of the target compressor.
For example, if the target compressor is compressor a, the target tank pressure interval is D2-U3, the first tank pressure interval is Na-U1, and the second tank pressure interval is D3-Yb, the actual load value of compressor a is 25%, and the target load value is 75%. Since U1< U3< Yb, the terminal adjusts the load of compressor a from 25% to 50% and then to 75%.
Optionally, when the target start-stop state of each compressor indicated by the target load state information is the same as the actual start-stop state indicated by the actual load state information, and the target load value of the target compressor is smaller than the actual load value. The terminal firstly acquires a first tank pressure interval corresponding to the current load value of the target compressor. Then, in response to that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the first tank pressure interval and not smaller than the lower limit value of a third tank pressure interval, the terminal can gradually reduce the load value of the target compressor from the current load value, and the third tank pressure interval is a tank pressure interval corresponding to the lowest load value of the target compressor.
For example, if the target compressor is compressor B, the target tank pressure interval is D4-U5, the first tank pressure interval is D6-Yc, and the third tank pressure interval is Nb-U4, the actual load value of compressor B is 100%, and the target load value is 50%. Since Nb < D4< D6, the terminal adjusts the load value of compressor B from 100% to 75% and then to 50%.
Optionally, when the target start-stop state of each compressor indicated by the target load state information is different from the actual start-stop state indicated by the actual load state information, and the target load value of the target compressor is greater than the actual load value. The terminal firstly obtains a second tank pressure interval corresponding to the highest load value of the target compressor. And responding to the condition that the upper limit value of the target tank pressure interval is larger than the upper limit value of the second tank pressure interval, the terminal can increase the load value of the target compressor from the current load value step by step and start the first compressor, wherein the starting sequence of the first compressor is adjacent to and behind the target compressor.
For example, the target compressor is compressor B, the target tank pressure interval is D7-U8, the first tank pressure interval is D4-U5, and the second tank pressure interval is D6-Yc. The actual load value of the compressor B was 50%, and the target load value was 100%. The actual start-stop state of the compressor C is a stop state, the target start-stop state is a start state, and the target load value is 50%. Since U8> Yc, the terminal adjusts the load value of compressor B from 50% to 75%, and then from 75% to 100%, then the terminal starts compressor C, and finally the terminal adjusts the load value of compressor C from 25% to 50%.
Optionally, when the target start-stop state of each compressor indicated by the target load state information is different from the actual start-stop state indicated by the actual load state information, and the target load value of the target compressor is smaller than the actual load value. And the terminal firstly acquires a third tank pressure interval corresponding to the lowest load value of the target compressor. In response to the lower limit value of the target tank pressure interval being smaller than the lower limit value of the third tank pressure interval, the terminal can reduce the load value of the target compressor step by step from the current load value and then turn off the target compressor.
For example, the target compressor is compressor B, the target tank pressure interval is D1-U2, the first tank pressure interval is D4-U5, and the third tank pressure interval is Nb-U4. The actual load value of the compressor B is 50%, the actual start-stop state is a starting state, and the target start-stop state is a stopping state. The actual start-stop state of the compressor A is a starting state, the actual load value is 100%, and the target load value is 50%. Since D1< Nb, the terminal adjusts the load value of compressor B from 50% to 25%, then shuts down compressor B, then starts compressor C, and finally adjusts the load value of compressor C from 25% to 50%.
204. And responding to the continuous increase of the tank pressure signal value to the upper limit value of the target tank pressure interval, and outputting a load increasing signal, wherein the load increasing signal is used for indicating a target compressor to increase the load, and the target compressor is a compressor which is started in the compressor unit and is started recently.
In the embodiment of the application, for the target compressor, when the target compressor is at the target load value corresponding to the target tank pressure interval, if the tank pressure continuously rises, once the tank pressure signal value reaches the upper limit value of the target tank pressure interval, the terminal outputs a load increasing signal, and the load increasing signal instructs the target compressor to change the size of the clearance cavity and/or the opening and closing state of the unloader until the load value of the target compressor is adjusted to a proper size, namely the tank pressure is maintained in the tank pressure interval corresponding to the adjusted load value.
205. And responding to the continuous reduction of the tank pressure signal value to the lower limit value of the target tank pressure interval, and outputting a load reduction signal by the terminal, wherein the load reduction signal is used for indicating the target compressor to reduce the load.
In the embodiment of the application, when the target compressor is at the target load value corresponding to the target tank pressure interval, if the tank pressure is continuously reduced, once the tank pressure signal value reaches the lower limit value of the target tank pressure interval, the terminal outputs a load reduction signal, and the target compressor is instructed to change the size of the clearance cavity and/or the opening and closing state of the unloader through the load reduction signal until the load value of the target compressor is adjusted to be proper, namely the tank pressure is maintained in the tank pressure interval corresponding to the adjusted load value.
It should be noted that, if the load value of a certain compressor is adjusted up to full load, that is, the load value is continuously increased when the load value is the highest, the terminal instructs to start a new compressor to enter a starting state, and the compressor is adjusted step by step from the 25% load value; if the load value of the compressor is reduced step by step along with the reduction of the tank pressure, and the tank pressure is still continuously reduced when the load value is reduced to 25 percent step by step, the operation of the compressor is stopped, and the compressor is set to be in a stop state.
It should be noted that, in order to make the adjustment method of the reciprocating compressor load described in the above steps 201 to 205 easier to understand, referring to fig. 3, fig. 3 is a logic block diagram of a reciprocating compressor load adjustment according to an embodiment of the present application. As shown in fig. 3, the reciprocating compressor unit includes three parallel reciprocating compressors: compressor a, compressor B and compressor C, the parameters shown in the figure are shown in table 1.
It should be noted that the method for adjusting the load of the reciprocating compressor unit, provided by the embodiment of the application, realizes automatic control, improves the automatic control level of a process system, and provides guarantee for safe and stable operation of a storage tank. In addition, because the adjacent tank pressure intervals are mutually crossed and not completely overlapped, the compressor unit is prevented from frequently acting or even starting and stopping near a certain tank pressure control point, and the use effect and the service life of the compressor are prolonged. The scheme provided by the embodiment of the application is very flexible, the lower limit value and the upper limit value of each tank pressure interval can be set and adjusted according to actual requirements, and if the running time of the transition load gear which cannot be operated for a long time can be limited, the method and the device are suitable for the performances of different compressors. Finally, the scheme provided by the embodiment of the application is wide in applicability, can be used for controlling compressor unit control systems of low-temperature and normal-pressure storage tanks and tank area pressures of liquefied natural gas, liquefied petroleum gas, liquid ethylene, liquid ammonia and the like, and is also suitable for compressor unit control schemes of process systems with similar pressure response characteristics, and the embodiment of the application is not described one by one.
In order to verify the effect of the method for adjusting the load of the reciprocating compressor unit according to the present invention, the method for adjusting the load of the reciprocating compressor unit was implemented in a certain lng receiving station. Before implementation, the regulation and the equipment start and stop of the reciprocating compressor unit of the liquefied natural gas receiving station are controlled manually by an operator, the workload is large, and the tank pressure control is unstable. After the implementation, the pressure of the storage tank is rapidly increased during the ship unloading, the three compressors are sequentially put into operation, the tank pressure gradually falls back after the ship unloading is finished, the load of the compressor unit is stably reduced, and one of the compressors is automatically shut down. Therefore, the automatic control of the compressor load adjustment is successfully realized, the whole load adjustment process is well controlled, and the expected purpose is achieved.
In the embodiment of the application, the method for adjusting the load of the reciprocating compressor unit is provided, and the load states of the compressors in the compressor unit can be timely adjusted step by step according to the current tank pressure signal value by setting the tank pressure intervals corresponding to the load values of the compressors, so that manual intervention is not needed, the probability of misoperation is reduced, the reliability and the accuracy are improved, and the potential safety hazard is avoided.
Fig. 4 is a block diagram of an adjusting device for a load of a reciprocating compressor set according to an embodiment of the present application. The apparatus is used for executing the steps when the method is executed, and referring to fig. 4, the apparatus comprises: an obtaining module 401, a determining module 402 and an adjusting module 403.
An obtaining module 401, configured to obtain a target tank pressure interval to which a current tank pressure signal value belongs, where one tank pressure interval corresponds to one load value of one compressor;
a determining module 402, configured to determine target load state information according to the target tank pressure interval, where the target load state information is used to indicate a target start-stop state and a target load value of each compressor in a compressor unit;
an adjusting module 403, configured to adjust the load value and the start-stop state of each compressor step by step according to the target load state information in response to that the target load state information does not conform to the actual load state information, where the actual load state information is used to indicate the actual start-stop state and the actual load value of each compressor.
In an alternative implementation, the adjusting module 403 includes:
the obtaining unit is used for responding to the inconsistency between the target load state information and the actual load state information, and obtaining the current load value of a target compressor, wherein the target compressor is a compressor which is started in the compressor unit and is started recently;
and the adjusting unit is used for adjusting at least one of the load value of the target compressor, the start-stop state of the target compressor and the start-stop states of other compressors adjacent to the target compressor in the starting sequence from the current load value step by step according to the target load state information.
In an optional implementation manner, the adjusting unit is configured to obtain a first tank pressure interval corresponding to a current load value of the target compressor; and responding to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the first tank pressure interval and not larger than the upper limit value of a second tank pressure interval, and gradually increasing the load value of the target compressor from the current load value, wherein the second tank pressure interval is the tank pressure interval corresponding to the highest load value of the target compressor.
In an optional implementation manner, the adjusting unit is configured to obtain a first tank pressure interval corresponding to a current load value of the target compressor; and in response to the fact that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the first tank pressure interval and not smaller than the lower limit value of a third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, wherein the third tank pressure interval is a tank pressure interval corresponding to the lowest load value of the target compressor.
In an optional implementation manner, the adjusting unit is configured to obtain a second tank pressure interval corresponding to a highest load value of the target compressor; and responding to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, and starting a first compressor, wherein the starting sequence of the first compressor is adjacent to and behind the target compressor.
In an optional implementation manner, the adjusting unit is configured to obtain a third tank pressure interval corresponding to the lowest load value of the target compressor; and in response to the lower limit value of the target tank pressure interval being smaller than the lower limit value of the third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, and closing the target compressor.
In an optional implementation, the apparatus further includes:
the signal output module is used for responding to the situation that the tank pressure signal value continuously rises to the upper limit value of the target tank pressure interval, and outputting a load increasing signal, wherein the load increasing signal is used for indicating a target compressor to increase the load, and the target compressor is a compressor which is started in a compressor unit and is started recently;
the signal output module is further used for responding to the fact that the tank pressure signal value is continuously reduced to a lower limit value of the target tank pressure interval, and outputting a load reduction signal, wherein the load reduction signal is used for indicating the target compressor to reduce the load.
In the embodiment of the application, the method for adjusting the load of the reciprocating compressor unit is provided, and the load states of the compressors in the compressor unit can be timely adjusted step by step according to the current tank pressure signal value by setting the tank pressure intervals corresponding to the load values of the compressors, so that manual intervention is not needed, the probability of misoperation is reduced, the reliability and the accuracy are improved, and the potential safety hazard is avoided.
It should be noted that: the load adjustment device for a reciprocating compressor unit according to the above embodiment is illustrated by dividing the functional modules when adjusting the load of the reciprocating compressor unit, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to perform all or part of the above described functions. In addition, the adjusting device for the load of the reciprocating compressor unit and the embodiment of the adjusting method for the load of the reciprocating compressor unit provided by the above embodiment belong to the same concept, and the specific implementation process is detailed in the embodiment of the method and is not described again.
Fig. 5 is a block diagram of a terminal 500 according to an embodiment of the present application. The terminal 500 may be a portable mobile terminal such as: a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III, motion video Experts compression standard Audio Layer 3), an MP4 player (Moving Picture Experts Group Audio Layer IV, motion video Experts compression standard Audio Layer 4), a notebook computer, or a desktop computer. Terminal 500 may also be referred to by other names such as user equipment, portable terminal, laptop terminal, desktop terminal, and the like.
In general, the terminal 500 includes: a processor 501 and a memory 502.
The processor 501 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 501 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 501 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 501 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, processor 501 may also include an AI (Artificial Intelligence) processor for processing computational operations related to machine learning.
In some embodiments, the terminal 500 may further optionally include: a peripheral interface 503 and at least one peripheral. The processor 501, memory 502 and peripheral interface 503 may be connected by a bus or signal lines. Each peripheral may be connected to the peripheral interface 503 by a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 504, display screen 505, camera assembly 506, audio circuitry 507, positioning assembly 508, and power supply 509.
The peripheral interface 503 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 501 and the memory 502. In some embodiments, the processor 501, memory 502, and peripheral interface 503 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 501, the memory 502, and the peripheral interface 503 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.
The Radio Frequency circuit 504 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 504 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 504 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 504 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 504 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: the world wide web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the rf circuit 504 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.
The display screen 505 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 505 is a touch display screen, the display screen 505 also has the ability to capture touch signals on or over the surface of the display screen 505. The touch signal may be input to the processor 501 as a control signal for processing. At this point, the display screen 505 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display screen 505 may be one, disposed on the front panel of the terminal 500; in other embodiments, the display screens 505 may be at least two, respectively disposed on different surfaces of the terminal 500 or in a folded design; in other embodiments, the display 505 may be a flexible display disposed on a curved surface or a folded surface of the terminal 500. Even more, the display screen 505 can be arranged in a non-rectangular irregular figure, i.e. a shaped screen. The Display screen 505 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and other materials.
The camera assembly 506 is used to capture images or video. Optionally, camera assembly 506 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments, camera assembly 506 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
The positioning component 508 is used for positioning the current geographic Location of the terminal 500 for navigation or LBS (Location Based Service). The Positioning component 508 may be a Positioning component based on the Global Positioning System (GPS) in the united states, the beidou System in china, or the galileo System in russia.
In some embodiments, terminal 500 also includes one or more sensors 510. The one or more sensors 510 include, but are not limited to: acceleration sensor 511, gyro sensor 512, pressure sensor 513, fingerprint sensor 514, optical sensor 515, and proximity sensor 516.
The acceleration sensor 511 may detect the magnitude of acceleration on three coordinate axes of the coordinate system established with the terminal 500. For example, the acceleration sensor 511 may be used to detect components of the gravitational acceleration in three coordinate axes. The processor 501 may control the display screen 505 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 511. The acceleration sensor 511 may also be used for acquisition of motion data of a game or a user.
The gyro sensor 512 may detect a body direction and a rotation angle of the terminal 500, and the gyro sensor 512 may cooperate with the acceleration sensor 511 to acquire a 3D motion of the user on the terminal 500. The processor 501 may implement the following functions according to the data collected by the gyro sensor 512: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.
The pressure sensor 513 may be disposed on a side frame of the terminal 500 and/or underneath the display screen 505. When the pressure sensor 513 is disposed on the side frame of the terminal 500, a user's holding signal of the terminal 500 may be detected, and the processor 501 performs left-right hand recognition or shortcut operation according to the holding signal collected by the pressure sensor 513. When the pressure sensor 513 is disposed at the lower layer of the display screen 505, the processor 501 controls the operability control on the UI interface according to the pressure operation of the user on the display screen 505. The operability control comprises at least one of a button control, a scroll bar control, an icon control and a menu control.
The fingerprint sensor 514 is used for collecting the fingerprint of the user, and the processor 501 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 514, or the fingerprint sensor 514 identifies the identity of the user according to the collected fingerprint. Upon recognizing that the user's identity is a trusted identity, the processor 501 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings, etc. The fingerprint sensor 514 may be disposed on the front, back, or side of the terminal 500. When a physical button or a vendor Logo is provided on the terminal 500, the fingerprint sensor 514 may be integrated with the physical button or the vendor Logo.
The optical sensor 515 is used to collect the ambient light intensity. In one embodiment, the processor 501 may control the display brightness of the display screen 505 based on the ambient light intensity collected by the optical sensor 515. Specifically, when the ambient light intensity is high, the display brightness of the display screen 505 is increased; when the ambient light intensity is low, the display brightness of the display screen 505 is reduced. In another embodiment, processor 501 may also dynamically adjust the shooting parameters of camera head assembly 506 based on the ambient light intensity collected by optical sensor 515.
A proximity sensor 516, also referred to as a distance sensor, is typically disposed on the front panel of the terminal 500. The proximity sensor 516 is used to collect the distance between the user and the front surface of the terminal 500. In one embodiment, when the proximity sensor 516 detects that the distance between the user and the front surface of the terminal 500 gradually decreases, the processor 501 controls the display screen 505 to switch from the bright screen state to the dark screen state; when the proximity sensor 516 detects that the distance between the user and the front surface of the terminal 500 becomes gradually larger, the display screen 505 is controlled by the processor 501 to switch from the breath screen state to the bright screen state.
Those skilled in the art will appreciate that the configuration shown in fig. 5 is not intended to be limiting of terminal 500 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.
The embodiment of the present application further provides a computer-readable storage medium, which is applied to a terminal, and the computer-readable storage medium stores at least one piece of computer program, where the at least one piece of computer program is loaded and executed by a processor to implement the operations executed by the terminal in the reciprocating compressor group load adjusting method according to the foregoing embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (16)
1. A method of regulating the load on a reciprocating compressor unit, said method comprising:
acquiring a target tank pressure interval to which a current tank pressure signal value belongs, wherein one tank pressure interval corresponds to one load value of one compressor;
determining target load state information according to the target tank pressure interval, wherein the target load state information is used for indicating target start-stop states and target load values of all compressors in a compressor unit;
and in response to the fact that the target load state information is inconsistent with the actual load state information, gradually adjusting the load value and the start-stop state of each compressor according to the target load state information, wherein the actual load state information is used for indicating the actual start-stop state and the actual load value of each compressor.
2. The method of claim 1, wherein the adjusting the load value and the start-stop state of each compressor step by step according to the target load state information in response to the target load state information not matching the actual load state information comprises:
responding to the inconsistency between the target load state information and the actual load state information, and acquiring the current load value of a target compressor, wherein the target compressor is a compressor which is started in a compressor unit and is started recently;
and according to the target load state information, at least one of the load value of a target compressor, the start-stop state of the target compressor and the start-stop states of other compressors adjacent to the target compressor in the starting sequence is adjusted step by step from the current load value.
3. The method of claim 2, wherein the adjusting step by step at least one of the load value of the target compressor, the start-stop state of the target compressor, and the start-stop states of other compressors adjacent to the target compressor in the start order from the current load value according to the target load state information comprises:
acquiring a first tank pressure interval corresponding to the current load value of the target compressor;
and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the first tank pressure interval and not larger than the upper limit value of a second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, wherein the second tank pressure interval is a tank pressure interval corresponding to the highest load value of the target compressor.
4. The method of claim 2, wherein the adjusting step by step at least one of the load value of the target compressor, the start-stop state of the target compressor, and the start-stop states of other compressors adjacent to the target compressor in the start order from the current load value according to the target load state information comprises:
acquiring a first tank pressure interval corresponding to the current load value of the target compressor;
and in response to the fact that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the first tank pressure interval and not smaller than the lower limit value of a third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, wherein the third tank pressure interval is a tank pressure interval corresponding to the lowest load value of the target compressor.
5. The method of claim 2, wherein the adjusting step by step at least one of the load value of the target compressor, the start-stop state of the target compressor, and the start-stop states of other compressors adjacent to the target compressor in the start order from the current load value according to the target load state information comprises:
acquiring a second tank pressure interval corresponding to the highest load value of the target compressor;
and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, and starting the first compressor, wherein the starting sequence of the first compressor is adjacent to and behind the target compressor.
6. The method of claim 2, wherein the adjusting step by step at least one of the load value of the target compressor, the start-stop state of the target compressor, and the start-stop states of other compressors adjacent to the target compressor in the start order from the current load value according to the target load state information comprises:
acquiring a third tank pressure interval corresponding to the lowest load value of the target compressor;
and in response to the lower limit value of the target tank pressure interval being smaller than the lower limit value of the third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, and closing the target compressor.
7. The method of claim 1, further comprising:
responding to the continuous increase of the tank pressure signal value to the upper limit value of the target tank pressure interval, and outputting a load increasing signal, wherein the load increasing signal is used for indicating a target compressor to increase the load, and the target compressor is a compressor which is started in a compressor unit and is started recently;
and responding to the continuous reduction of the tank pressure signal value to the lower limit value of the target tank pressure interval, and outputting a load reduction signal, wherein the load reduction signal is used for indicating the target compressor to reduce the load.
8. An apparatus for regulating a load of a reciprocating compressor unit, said apparatus comprising:
the acquisition module is used for acquiring a target tank pressure interval to which the current tank pressure signal value belongs, and one tank pressure interval corresponds to one load value of one compressor;
the determining module is used for determining target load state information according to the target tank pressure interval, wherein the target load state information is used for indicating a target start-stop state and a target load value of each compressor in the compressor unit;
and the adjusting module is used for responding to the inconsistency between the target load state information and the actual load state information, and gradually adjusting the load value and the start-stop state of each compressor according to the target load state information, wherein the actual load state information is used for indicating the actual start-stop state and the actual load value of each compressor.
9. The apparatus of claim 8, wherein the adjustment module comprises:
the obtaining unit is used for responding to the inconsistency between the target load state information and the actual load state information, and obtaining the current load value of a target compressor, wherein the target compressor is a compressor which is started in the compressor unit and is started recently;
and the adjusting unit is used for adjusting at least one of the load value of the target compressor, the start-stop state of the target compressor and the start-stop states of other compressors adjacent to the target compressor in the starting sequence from the current load value step by step according to the target load state information.
10. The device of claim 9, wherein the adjusting unit is configured to obtain a first tank pressure interval corresponding to a current load value of the target compressor; and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the first tank pressure interval and not larger than the upper limit value of a second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, wherein the second tank pressure interval is a tank pressure interval corresponding to the highest load value of the target compressor.
11. The device of claim 9, wherein the adjusting unit is configured to obtain a first tank pressure interval corresponding to a current load value of the target compressor; and in response to the fact that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the first tank pressure interval and not smaller than the lower limit value of a third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, wherein the third tank pressure interval is a tank pressure interval corresponding to the lowest load value of the target compressor.
12. The device of claim 9, wherein the adjusting unit is configured to obtain a second tank pressure interval corresponding to a highest load value of the target compressor; and in response to the fact that the upper limit value of the target tank pressure interval is larger than the upper limit value of the second tank pressure interval, gradually increasing the load value of the target compressor from the current load value, and starting the first compressor, wherein the starting sequence of the first compressor is adjacent to and behind the target compressor.
13. The device of claim 9, wherein the adjusting unit is configured to obtain a third tank pressure interval corresponding to the target compressor minimum load value; and in response to the fact that the lower limit value of the target tank pressure interval is smaller than the lower limit value of the third tank pressure interval, gradually reducing the load value of the target compressor from the current load value, and closing the target compressor.
14. The apparatus of claim 8, further comprising:
the signal output module is used for responding to the situation that the tank pressure signal value continuously rises to the upper limit value of the target tank pressure interval, and outputting a load increasing signal, wherein the load increasing signal is used for indicating a target compressor to increase the load, and the target compressor is a compressor which is started in a compressor unit and is started recently;
the signal output module is further used for responding to the fact that the tank pressure signal value is continuously reduced to a lower limit value of the target tank pressure interval, and outputting a load reduction signal, wherein the load reduction signal is used for indicating the target compressor to reduce the load.
15. A terminal, characterized in that it comprises a processor and a memory, said memory being used to store at least one piece of computer program, said at least one piece of computer program being loaded by said processor and executing the method for regulating the load of a reciprocating compressor group according to any one of claims 1 to 7.
16. A storage medium for storing at least one piece of computer program for executing the method of adjusting a load of a reciprocating compressor group according to any one of claims 1 to 7.
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