CN219872170U

CN219872170U - FF-type bus-based electric actuator configuration system

Info

Publication number: CN219872170U
Application number: CN202320353276.2U
Authority: CN
Inventors: 田爽; 叶宁; 王维刚; 王傲寒; 李晓博; 章硕; 赵亮
Original assignee: Xian Thermal Power Research Institute Co Ltd; Xian Xire Control Technology Co Ltd; Huaneng Laiwu Power Generation Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd; Xian Xire Control Technology Co Ltd; Huaneng Laiwu Power Generation Co Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-10-20
Anticipated expiration: 2033-02-28

Abstract

The utility model provides an FF-based bus electric actuator configuration system, which comprises a communication acquisition card, a controller and an upper computer, wherein the input and output ends of the communication acquisition card are connected with an electric actuator; the output and input ends of the communication acquisition card are connected with a controller integrated with an FF bus, and the controller is in communication connection with an upper computer; the electric actuator adopting FF type bus control can meet the control requirements of seven groups of signals only by one group of communication wires, greatly reduces the number of cabling, reduces the construction cost, and can meet the control requirements of seven groups of signals only by one group of communication wires, greatly reduces the number of cabling and reduces the construction cost.

Description

FF-type bus-based electric actuator configuration system

Technical Field

The utility model belongs to the technical field of industrial field bus communication systems, and particularly relates to a FF-type bus-based electric actuator configuration system.

Background

When the traditional hard-wired electric actuating mechanism is controlled, seven groups of cable signals including an on feedback signal, an off feedback signal, a fault signal, an on instruction signal, an off instruction signal, an opening instruction signal and an opening feedback signal are needed, wherein the first five groups of signals are switching value signals, the second two groups of signals are analog value signals, and a plurality of cables are needed to be paved for acquiring the seven groups of cable signals, so that the construction cost is increased; in addition, the traditional electric actuator needs to manually carry out the work of parameter adjustment and equipment correction on the industrial site, so that the working efficiency is low and the labor cost is high; meanwhile, the manual regulation and control make the controllability of the electric actuator low.

Disclosure of Invention

The utility model aims to provide an FF-type bus-based electric actuator configuration system, which solves the defect of high control cost in the control of an electric actuator in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an FF-based bus electric actuator configuration system, which comprises a communication acquisition card, a controller and an upper computer, wherein the input and output ends of the communication acquisition card are connected with an electric actuator; the output and input ends of the communication acquisition card are connected with a controller integrated with an FF bus, and the controller is connected with an upper computer in a communication way.

Preferably, the controller-integrated FF bus includes an FFAI function block, an FFDI function block, an FFDO function block, and an FFAO function block.

Preferably, an input pin of the FFAO function block is an adjustment instruction input of the electric actuator.

Preferably, the output pin of the FFAI function block is a valve position feedback real-time value of the electric actuator.

Preferably, the input pin of the FFDO function is a switch command input of the electric actuator.

Preferably, the switch state of the output pin electric actuator of the FFDI functional block feeds back a real time value.

Preferably, the controller is connected with the upper computer through a network cable.

Compared with the prior art, the utility model has the beneficial effects that:

according to the control system based on the FF type bus electric actuator, the control requirements of seven groups of signals can be met by adopting the FF type bus controlled electric actuator only by one group of communication wires, so that the cable laying quantity is greatly reduced, and the construction cost is reduced; in addition, the equipment for communication transmission is adopted, more data are transmitted by the equipment, the selected additional effective information can be screened out purposefully, all information of signals such as motor rotation speed, running temperature and the like can be transmitted through a group of communication lines, no additional cable is needed, and the controllable accuracy of the equipment is improved comprehensively; meanwhile, the equipment after communication can manage the field equipment through the upper bit position computer, so that the working efficiency is improved, and the human resources are saved.

Drawings

FIG. 1 is a schematic diagram of the system architecture of the present utility model;

FIG. 2 is a schematic diagram of a FF type bus electric actuator adjustment mode configuration control scheme;

fig. 3 is a schematic diagram of a switching mode configuration control scheme of an FF type bus electric actuator.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Fieldbus technology and products, which began to develop at the end of the 80 s, and the control systems composed of them, the Fieldbus control systems (FCS, fie ldbus Contro l System), have led to a revolution in the field of automatic control. The open, full digital, bi-directional and multi-station communication network and the multifunctional intelligent on-site digital instrument are main characteristics of FCS, which can greatly leap the efficiency of the automatic control system and reduce the comprehensive cost in the aspects of design, construction, debugging, operation, maintenance, system expansion and the like.

Through the gradual and deep application of field buses in different industries, the knowledge of the professional skilled in various bus standard application occasions is increasingly clear, and the conclusion of the comparison is that: for process control applications, the PROFI BUS and FF (FOUNDATION Fie ldbus) buses are suitable, and different fields have different requirements for FCS, so the buses used are different, in particular:

simulation of continuous classes: the basic measurement and control objects are flow, temperature, material level, pressure, pneumatic locators, temperature transmitters and the like, such as FF standard H1 buses and Profibus-PA buses developed from the instrument industry.

Digital discrete action class: the basic measurement and control objects are an electric executing mechanism, an intelligent motor protection device, an analysis instrument, an I DAS communication device, PLC communication equipment, an electromagnetic valve island box and the like, such as Profibus-DP buses developed from the PLC.

The field bus standards which are relatively mature and widely applied to thermal power plants at present internationally and domestically are a Type3Profibus field bus and a Type9FF-H1 field bus; in comparison to the two BUS standards, FF-H1 is better suited for continuous quantity control (instead of 4-20 mA analog), while PROFI BUS is better suited for discrete quantity control, but at the same time also suited for continuous quantity control (which is slightly inferior to FF BUS in terms of continuous quantity control).

The configuration method of Profibus-DP type bus equipment in industrial control industry mainly carries out modularized input/output channel configuration through an upper computer according to GSD files, wherein the GSD files are driving files of the type of bus and are standard communication interfaces established for mutual integration among different manufacturers; the FF type bus equipment configuration method is to carry out modularized configuration through a DD file by an upper computer, wherein the DD file is the standardized definition of the type of equipment, and the control of the equipment is mainly realized through a functional block FFAI, FFAO, FFDI, FFDO in configuration software.

The application for the FF type bus electric actuator is also temporarily in the vacuum region,

specifically, as shown in fig. 1, the control system based on the FF type bus electric actuator provided by the utility model comprises a communication acquisition card, a controller and an upper computer, wherein the input and output ends of the communication acquisition card are connected with the electric actuator; the output and input ends of the communication acquisition card are connected with a controller integrated with an FF bus, and the controller is connected with an upper computer in a communication way.

Example 1, taking an electric actuator as an example

The utility model provides a control system based on an FF type bus electric actuator, which comprises but is not limited to a fresh water inlet electric valve.

The FFbus integrated by the controller comprises an FFAI functional block, an FFDI functional block, an FFDO functional block and an FFAO functional block, wherein the FFAI functional block is used for reading valve position feedback, moment value and motor current value of the electric actuator; the FFDI functional block is used for transmitting switching value information of the electric actuating mechanism, wherein the switching value information comprises remote, local, full-on, full-off, over-torque, motor overheat, fault, on-line, off-line and communication configuration abnormal information; the FFDO functional block is used for driving an on command, an off command and a stop command of the electric executing mechanism; the FFAO function block is used for control of the adjustment instruction.

In example 2, the ff bus electric actuator adjustment mode configuration control scheme.

With the DCS platform as an experimental environment, a specific configuration scheme is shown in fig. 2 below, constructed under the condition of controlling with an adjustment command and feedback as requirements:

the input pin of the FFAO functional block is the input of an adjusting instruction of the electric actuator, and the output pin of the FFAI functional block is a valve position feedback real-time value of the electric actuator; the input instruction of the electric actuating mechanism can be changed through the upper computer, so that the actual opening of the valve is controlled, the valve position opening information of the actuating mechanism is 0 to 100% under the normal condition, and experiments prove that when the given instruction is 10%, 30%, 50%, 80% and 100%, the upper computer receives opening feedback values of 9.9%, 28.9%, 50.1%, 79.3% and 100.2%. The actual opening of the control site is the same as that of the upper computer.

Embodiment 3, ff bus electric actuator switch mode configuration control scheme.

With the DCS platform as an experimental environment, the specific configuration scheme is shown in the following figure 3 under the condition that a switch instruction and feedback are used as requirements for control:

the input pin of the FFDO functional block is the switch instruction input of the electric actuator, and the output pin of the FFDI functional block is the switch state feedback real-time value of the electric actuator. By performing relevant configuration, control of input parameters and execution of algorithms on the functional blocks. When the upper computer is used for conducting closing instruction operation on the electric executing mechanism, when the equipment is in a fully closed position, the valve position feedback value is less than 2 through valve position feedback, and when the valve position feedback value is less than 2, the switching value feedback fully closed signal is set to 1; when the upper computer is used for carrying out closing instruction operation on the execution mechanism, a stopping instruction is sent again at the moment, when the valve position of the execution mechanism is at the middle position, the full-open and full-closed position signals disappear, in addition, the remote on-site signals can be switched through the knob position of the on-site equipment, and the upper-bit pattern configuration remote signals are fed back normally.

The method has the advantages of better production and management service and full play of the advantages of the related technology through the application example of the FF type bus electric actuator, along with the operability, data openness and interactivity of the device.

Moreover, because the FF-type bus does not have redundancy characteristics, the FF-type bus has a certain safety risk compared with the Profibus-DP-type bus, but the independent physical attribute of the FF-type bus is incomparable with the Profibus-DP-type bus, for example, when the Profibus-DP-type bus equipment of a certain link has the ground connection, the short circuit condition or the equipment needs to be disassembled for maintenance and replacement, if the communication of the whole link equipment is affected by improper treatment; the FF type bus is independent of other devices due to the physical characteristics, and when the device performs fault processing, only maintenance processing is performed on the device, so that other devices on the link are not affected.

Claims

1. The FF-type bus-based electric actuator configuration system is characterized by comprising a communication acquisition card, a controller and an upper computer, wherein the input and output ends of the communication acquisition card are connected with an electric actuator; the output and input ends of the communication acquisition card are connected with a controller integrated with an FF bus, and the controller is connected with an upper computer in a communication way.

2. The FF-based bus electric actuator configuration system of claim 1, wherein the controller-integrated FF bus comprises an FFAI function block, an FFDI function block, an FFDO function block, and an FFAO function block.

3. The FF-type bus-based electric actuator configuration system of claim 2, wherein the input pins of the FFAO function block are adjustment command inputs for the electric actuator.

4. The FF-based bus electric actuator configuration system of claim 2, wherein the output pin of the FFAI function is a valve position feedback real-time value of the electric actuator.

5. The FF-based bus electric actuator configuration system of claim 2, wherein the input pins of the FFDO function block are switch command inputs of the electric actuator.

6. The FF-based bus electric actuator configuration system of claim 2, wherein the output pins of the FFDI function block provide on-off state feedback real time values.

7. The FF-based bus electric actuator configuration system of claim 1, wherein the controller is connected to the host computer via a network cable.