阅读说明：本技术 一种空压机组控制系统及控制方法 (Control system and control method for air compressor unit ) 是由 姜远鹏 马宁 张彦君 张云龙 李知音 张开闯 堵俊杰 于 2019-10-30 设计创作，主要内容包括：本发明提供了一种空压机组控制系统及控制方法,其具备物联网功能,可视化、大数据存储、远程操作化都能够进行,智能控制,节省了人力成本。其特征在于：其包括云服务器,所述云服务器分别连接远程客户端、压缩机物联网模块和采集流量物联网模块,所述压缩机物联网模块分别连接变频空压机和工频空压机组,所述变频空压机和工频空压机组的输出端分别连接调节阀,所述调节阀连接总管,所述总管上安装有流量计,所述采集流量物联网模块连接所述流量计。(The invention provides a control system and a control method of an air compressor unit, which have the function of the Internet of things, can perform visualization, large data storage and remote operation, can perform intelligent control, and saves labor cost. The method is characterized in that: the cloud server is connected with the remote client, the compressor Internet of things module and the flow collection Internet of things module respectively, the compressor Internet of things module is connected with the variable frequency air compressor and the power frequency air compressor unit respectively, the output ends of the variable frequency air compressor and the power frequency air compressor unit are connected with the regulating valve respectively, the regulating valve is connected with the header pipe, the header pipe is provided with the flowmeter, and the flow collection Internet of things module is connected with the flowmeter.)

1. An air compressor unit control system characterized in that: the cloud server is connected with the remote client, the compressor Internet of things module and the flow collection Internet of things module respectively, the compressor Internet of things module is connected with the variable frequency air compressor and the power frequency air compressor unit respectively, the output ends of the variable frequency air compressor and the power frequency air compressor unit are connected with the regulating valve respectively, the regulating valve is connected with the header pipe, the header pipe is provided with the flowmeter, and the flow collection Internet of things module is connected with the flowmeter.

2. The air compressor package control system according to claim 1, wherein: the compressor Internet of things module and the flow acquisition Internet of things module both adopt FBOX Internet of things modules.

3. The air compressor package control system according to claim 2, wherein: the regulating valve is a three-way pneumatic regulating valve.

4. The air compressor package control system according to claim 3, wherein: the flow collecting internet of things module is connected with the flow meter through a Modbus-RTU protocol.

5. A control method of an air compressor unit is characterized by comprising the following steps:

step 1, starting an air compressor unit control system, wherein the air compressor unit control system comprises a cloud server, the cloud server is respectively connected with a remote client, a compressor Internet of things module and a flow collection Internet of things module, the compressor Internet of things module is respectively connected with a variable frequency air compressor and a power frequency air compressor unit, the output ends of the variable frequency air compressor and the power frequency air compressor unit are respectively connected with an adjusting valve, the adjusting valve is connected with a main pipe, a flowmeter is mounted on the main pipe, and the flow collection Internet of things module is connected with the flowmeter;

step 2, starting the remote client, sending a set pressure value to the cloud server, controlling the corresponding regulating valve to be fully opened to be emptied by the cloud server through the compressor Internet of things module, and starting the frequency conversion air compressor to run in full load;

step 3, the cloud server compares the set pressure value with the rated air volume of the single air compressor, if the set pressure value is smaller than the rated air volume of the single air compressor, the step 4 is carried out, and if the set pressure value is larger than the rated air volume of the single air compressor, the step 5 is carried out;

step 4, collecting an actual pressure value of the flow meter measured by the flow internet of things module and transmitting the actual pressure value to the cloud server through the wireless communication module, comparing the actual pressure value with a set pressure value by the cloud server through a PID algorithm, and adjusting the power of the variable frequency air compressor according to a comparison result until the actual pressure value is the same as the set pressure value;

and 5, starting N power frequency air compressors of rated air volume which are smaller than a set pressure value and are arranged in the power frequency air compressor unit, wherein N is a positive integer, collecting an actual pressure value of the flow internet of things module measuring flowmeter and transmitting the actual pressure value to a cloud server through a wireless communication module, comparing the actual pressure value with the set pressure value through a PID algorithm by the cloud server, and adjusting the power of the variable frequency air compressor according to a comparison result until the actual pressure value is the same as the set pressure value.

Technical Field

The invention relates to the field of air compressor control, in particular to a control system and a control method for an air compressor unit.

Background

The air compressor is used for providing air source power and is a core device of a pneumatic system. When the air compressor is used, a plurality of air compressors are usually connected in parallel to form an air compressor unit, the displacement of the air compressor unit is collected to a main pipe, and the main pipe provides air source power.

The Chinese invention patent publication No. CN106050634A discloses an air compressor group control system and a control method, comprising a human-computer interface, a PLC operation controller, a variable-frequency regulation air compressor, a power-frequency air compressor group, a pressure sensor, a paperless recorder and an air storage tank, wherein the power-frequency air compressor group is formed by connecting more than one power-frequency air compressors in series, the human-computer interface is electrically connected with the PLC operation controller, and the PLC operation controller is respectively electrically connected with the variable-frequency regulation air compressor and the power-frequency air compressor group. However, the air compressor unit lacks the internet of things function, so that the remote client is lost, visualization, big data storage and remote operation cannot be performed, and the use of a user is greatly influenced.

Disclosure of Invention

The invention provides an air compressor unit control system and a control method, aiming at the problems that the existing air compressor unit lacks the function of the Internet of things, so that the remote client is lost, and visualization, big data storage and remote operation can not be carried out.

The technical scheme is as follows:

an air compressor unit control system characterized in that: the cloud server is connected with the remote client, the compressor Internet of things module and the flow collection Internet of things module respectively, the compressor Internet of things module is connected with the variable frequency air compressor and the power frequency air compressor unit respectively, the output ends of the variable frequency air compressor and the power frequency air compressor unit are connected with the regulating valve respectively, the regulating valve is connected with the header pipe, the header pipe is provided with the flowmeter, and the flow collection Internet of things module is connected with the flowmeter.

It is further characterized in that:

the compressor Internet of things module and the flow acquisition Internet of things module both adopt FBOX Internet of things modules;

the regulating valve is a three-way pneumatic regulating valve;

the flow collecting internet of things module is connected with the flow meter through a Modbus-RTU protocol.

A control method of an air compressor unit is characterized by comprising the following steps:

step 1, starting an air compressor unit control system, wherein the air compressor unit control system comprises a cloud server, the cloud server is respectively connected with a remote client, a compressor Internet of things module and a flow collection Internet of things module, the compressor Internet of things module is respectively connected with a variable frequency air compressor and a power frequency air compressor unit, the output ends of the variable frequency air compressor and the power frequency air compressor unit are respectively connected with an adjusting valve, the adjusting valve is connected with a main pipe, a flowmeter is mounted on the main pipe, and the flow collection Internet of things module is connected with the flowmeter;

step 2, starting the remote client, sending a set pressure value to the cloud server, controlling the corresponding regulating valve to be fully opened to be emptied by the cloud server through the compressor Internet of things module, and starting the frequency conversion air compressor to run in full load;

step 3, the cloud server compares the set pressure value with the rated air volume of the single air compressor, if the set pressure value is smaller than the rated air volume of the single air compressor, the step 4 is carried out, and if the set pressure value is larger than the rated air volume of the single air compressor, the step 5 is carried out;

step 4, collecting an actual pressure value of the flow meter measured by the flow internet of things module and transmitting the actual pressure value to the cloud server through the wireless communication module, comparing the actual pressure value with a set pressure value by the cloud server through a PID algorithm, and adjusting the power of the variable frequency air compressor according to a comparison result until the actual pressure value is the same as the set pressure value;

and 5, starting N power frequency air compressors of rated air volume which are smaller than a set pressure value and are arranged in the power frequency air compressor unit, wherein N is a positive integer, collecting an actual pressure value of the flow internet of things module measuring flowmeter and transmitting the actual pressure value to a cloud server through a wireless communication module, comparing the actual pressure value with the set pressure value through a PID algorithm by the cloud server, and adjusting the power of the variable frequency air compressor according to a comparison result until the actual pressure value is the same as the set pressure value.

After having adopted such structure, because frequency conversion air compressor machine and decide frequency air compressor machine group pass through the thing networking module and are connected with the cloud ware, adjust actual pressure value and setting value through the cloud ware, the start-up of the air compressor machine of control corresponding quantity realizes house steward constant voltage output, and it possesses the thing networking function, and visual, big data storage, remote operation ization can both go on, and the human cost has been saved to the mode intelligence.

Drawings

FIG. 1 is a schematic diagram of the system control of the present invention;

FIG. 2 is an electrical wiring diagram of the system of the present invention;

FIG. 3 is an enlarged electrical wiring diagram at A of FIG. 2;

FIG. 4 is an enlarged electrical wiring diagram at B of FIG. 2;

FIG. 5 is a schematic view of a portion of the system from the compressor to the flow meter;

FIG. 6 is a logic diagram of a method;

1. a cloud server; 2. a remote client; 3. a compressor Internet of things module; 4. a flow collection Internet of things module; 5. a variable frequency air compressor; 6. a power frequency air compressor unit; 7. adjusting a valve; 8. a header pipe; 9. a flow meter.

Detailed Description

As shown in fig. 1 and 2, an air compressor unit control system comprises a cloud server 1, wherein the cloud server 1 is connected with a remote client 2, a compressor internet of things module 3 and a flow collection internet of things module 4 through a 4G network respectively, the compressor internet of things module 3 is an FBOX internet of things module, the FBOX internet of things module is connected with a variable frequency air compressor 5 and a power frequency air compressor unit 6 through an Ethernet respectively, and the power frequency air compressor unit 6 at least comprises 1 power frequency air compressor. The output ends of the variable frequency air compressor 5 and the power frequency air compressor unit 6 are respectively connected with a regulating valve 7, the regulating valve 7 is a three-way pneumatic regulating valve, the output end of the three-way pneumatic regulating valve is connected with a main pipe 8, a flowmeter 9 is installed on the main pipe 8, the Internet of things module 4 is collected, and the Internet of things module 4 is an FBOX Internet of things module and is connected with the flowmeter 9 through a Modbus-RTU protocol.

As shown in fig. 3, the FOX internet of things module is the same as the circuit connection mode of the variable frequency air compressor 5 and the power frequency air compressor unit 6, specifically, the ethernet interface of the FOX internet of things module is connected with the ethernet interface of the air compressor, the GND interface of the FOX internet of things module is connected with the GND interface of the air compressor, the 24V power interface of the FOX internet of things module is connected with the 24V power interface of the air compressor, and the a0+ interface and the a 0-interface of the air compressor are connected with the three-way pneumatic control valve after being connected in series.

As shown in fig. 4, the connection mode of the flow collection internet of things module 4 and the flowmeter 9 is that the 485+ interface and the 485-interface of the flow collection internet of things module 4 are connected in series and then connected with the flowmeter 9, and the 24V power interface of the flow collection internet of things module 4 is connected with the GND interface and connected with the external power supply.

As shown in fig. 6, a control method for an air compressor unit specifically includes the following steps:

step 1, starting an air compressor unit control system, wherein the air compressor unit control system comprises a cloud server 1, the cloud server 1 is respectively connected with a remote client 2, a compressor Internet of things module 3 and a flow collection Internet of things module 4 through a 4G network, the compressor Internet of things module 3 is respectively connected with a variable frequency air compressor 5 and a power frequency air compressor unit 6 through Ethernet, the output ends of the variable frequency air compressor 5 and the power frequency air compressor unit 6 are respectively connected with an adjusting valve 7, the adjusting valve 7 is a three-way pneumatic adjusting valve, the three-way pneumatic adjusting valve is connected with a main pipe 8, a flowmeter 9 is mounted on the main pipe 8, and the flow collection Internet of things module 4 is an FBOX Internet of things module and is connected with the flowmeter 9;

step 2, starting the remote client 2, sending a set pressure value to the cloud server 1, controlling the corresponding three-way pneumatic regulating valve to be fully opened to be emptied by the cloud server 1 through the compressor Internet of things module 3, and starting the variable frequency air compressor 5 to run in full load;

step 3, the cloud server 1 compares the set pressure value with the rated air volume of the single air compressor, if the set pressure value is smaller than the rated air volume of the single air compressor, the step 4 is carried out, and if the set pressure value is larger than the rated air volume of the single air compressor, the step 5 is carried out;

step 4, collecting an actual pressure value of a flow meter 9 measured by a flow internet of things module 4 and transmitting the actual pressure value to a cloud server 1 through a wireless communication module, comparing the actual pressure value with a set pressure value by the cloud server 1 through a PID algorithm, and adjusting the power of a variable frequency air compressor 5 through a compressor internet of things module 3 according to a comparison result until the actual pressure value is the same as the set pressure value;

and step 5, starting N power frequency air compressors with rated air volume smaller than a set pressure value in the power frequency air compressor unit 6 through the compressor Internet of things module 3, wherein N is a positive integer, collecting an actual pressure value of the flow meter 9 measured by the flow Internet of things module 4 and transmitting the actual pressure value to the cloud server 1 through the wireless communication module, comparing the actual pressure value with the set pressure value through the PID algorithm by the cloud server 1, and adjusting the power of the variable frequency air compressor 5 through the compressor Internet of things module 3 according to a comparison result until the actual pressure value is the same as the set pressure value.

In conclusion, because the variable-frequency air compressor and the fixed-frequency air compressor unit are connected with the cloud server through the internet of things module, the cloud server is used for adjusting the actual pressure value and the set value, the starting of the air compressors of the corresponding number is controlled, the constant-pressure output of the main pipe is realized, the variable-frequency air compressor and the fixed-frequency air compressor unit have the internet of things function, are intelligent in mode, store large data and save labor cost.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.