CN209447036U - A kind of novel steam turbine control system petrol station monitoring system - Google Patents
A kind of novel steam turbine control system petrol station monitoring system Download PDFInfo
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- CN209447036U CN209447036U CN201920517532.0U CN201920517532U CN209447036U CN 209447036 U CN209447036 U CN 209447036U CN 201920517532 U CN201920517532 U CN 201920517532U CN 209447036 U CN209447036 U CN 209447036U
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- petrol station
- conversion module
- data acquisition
- steam turbine
- turbine control
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Abstract
The utility model discloses a kind of steam turbine control system petrol station monitoring systems, the system includes: (5) three parts of petrol station measuring instrumentss (9), data acquisition A/D conversion module (4) and DCS system, the data acquisition A/D conversion module (4) is mounted on the scene (7) of steam turbine control system petrol station, the output signal concentration of several petrol station measuring instrumentss (9) is connected to data acquisition A/D conversion module (4), and uses MODBUS communication cable (2) connection data acquisition A/D conversion module (4) and DCS system (5)；It is connect between middle control operation computer (6) and DCS system (5) using ethernet netting twine (3).The utility model makes steam turbine control system petrol station signal be transferred to DCS system using the method for relative moderate, to realize remote operation control, reduced equipment investment cost has saved the human cost of use process.
Description
Technical field
The utility model relates to steam turbines, and in particular to the monitoring of steam turbine control system petrol station measuring signal concentration of transmissions
System.
Background technique
The measuring signal of the regulating system of steam turbine is all using the one-to-one mode of signal, that is, several instrument at present
Measuring signal just need several groups of signal cable signal to be transferred to long-range DCS system or digital indicator.It is such
Design just will increase the cost of signal cable and the cost of construction, and daily signal fault rate is also increased because route is more.
Data acquisition A/D conversion module may be implemented a multichannel measurement instrument analog signal and put together, and isolation is converted into
The output of RS-485 interface, with MODBUS agreement, does multiple groups signal concentration of transmissions to long-range DCS system or digital indicator
Display monitoring.
Modbus agreement is applied to a kind of all-purpose language on electronic controller.By this agreement, controller mutually it
Between, controller can communicate via between network (such as Ethernet) and other equipment.It has become a current industry standard.
There is it, the control equipment of different vendor's production can be linked to be industrial network, carry out Centralized Monitoring.This protocol defines a controls
Device processed can recognize the message structure used, but regardless of them be communicated by which kind of network.It describes a controller
The process of other equipment is requested access to, if responding the request from other equipment, and mistake how is detected and records.It makes
The common format of message field layout and content is determined.When communicating on a Modbus network, this agreement determines each control
Device need know their device address, identify the message sent by address, which kind of action decision will generate.If necessary to return
It answers, controller will generate feedback information and be issued with Modbus agreement.On other networks, the message of Modbus agreement is contained
Be converted to the frame or pack arrangement used over the network.This conversion is also extended according to specific network solution location, road
By path and the method for error detection.
Summary of the invention
The purpose of this utility model is that a kind of steam turbine control system petrol station monitoring is provided for existing system complex circuit
System.
Realize the technical solution of the utility model aim: a kind of steam turbine control system petrol station monitoring system, the system packet
Contain: tri- parts of field measuring instrument equipment, data acquisition A/D conversion module and DCS, the data acquisition A/D conversion module
It is mounted on the scene of regulating system petrol station, the output signal concentration of several field measuring instrument equipment is connected to data acquisition
A/D conversion module, and use a cable connection data acquisition A/D conversion module and DCS system；Middle control operation computer and DCS
It is connected between system using ethernet netting twine.
The utility model makes corresponding operation picture in DCS system, sets system and data acquisition A/D modulus of conversion
The parameter of block.Using shielded cable DCS interface corresponding with data acquisition A/D conversion module, is communicated and assisted by MODBUS
View realizes the information exchange of two systems.Signal biography is carried out using TC/IP agreement between middle control operation computer and DCS system
Defeated, middle control personnel can observe the detection data of regulating system petrol station on middle control operation screen in real time, to realize pair
The monitoring and operation of petrol station.
The utility model regulating system petrol station monitoring system changes the communication side of traditional one group of transmission cable of a signal
The multiple instrument measurement data-signals in scene can be transferred to DCS system by one group of signal through the invention, realized long-range by formula
Operation control to system oil station is adjusted.To reduce the cost of investment that the signal cable of DCS system is arrived at scene, only because of route
There is one group, complicated signal fault rate due to reduce more than the route.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
In figure: 1- cable, 2-MODBUS communication cable, 3- ethernet netting twine；4-A/D conversion module；5-DCS system；6-
Middle control operates computer；7- steam turbine control system petrol station scene；Operating room is controlled during 8- is long-range；9- petrol station measuring instrumentss.
Specific embodiment
Certain company's thermoelectric device has carried out primary transformation to steam turbine control system, and the petrol station of regulating system is individually gone out
Come, operation control remotely is carried out to petrol station.
According to traditional design, every instrument of petrol station is independently arranged signal cable and is transferred to DCS system, signal cable compared with
More, failure rate is higher, therefore the signal acquisition transmission of petrol station is transformed using the utility model.
For reality, the current signal of the analog quantity of the 4-20mA of every measuring instrumentss of petrol station is concentrated in order
It is connected to A/D conversion module, and sets every matched measuring range parameters of analysis, such as pressure range 0-16MPa, current range 0-
5A, 0-150 DEG C of temperature range, MODBUS communication needs are corresponding with DCS A/D conversion module parameter, and consistent setting both sides are logical
Interrogate format are as follows: RTU, mode RS-485, baud rate: 19200bit/s stop position: 1 bit check mode: odd.In DCS
Corresponding signal is write out using corresponding position number in the program of system, using remotely opening for corresponding position carry out oil pump
Stop, pressure interlocking of oil pressure etc., the analyzer display box of measuring instrumentss is devised on middle control operation screen, operator just passes through
The operation screen of DCS system can be monitored petrol station.
By this design, the complex circuit of solving the problems, such as over, daily trouble shooting judgement is also easier.No
But solve the cost of investment of the cable transmitted at a distance, also reduce because complex circuit and caused by signal fault rate.
Claims (1)
1. a kind of steam turbine control system petrol station monitoring system, it is characterized in that the system includes: petrol station measuring instrumentss (9), data
Acquisition A/D conversion module (4) and (5) three parts of DCS system, the data acquisition A/D conversion module (4) are mounted on steam turbine
The output signal concentration of several petrol station measuring instrumentss (9) is connected to data acquisition A/D by the scene (7) of regulating system petrol station
Conversion module (4), and use MODBUS communication cable (2) connection data acquisition A/D conversion module (4) and DCS system
(5)；It is connect between middle control operation computer (6) and DCS system (5) using ethernet netting twine (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920517532.0U CN209447036U (en) | 2019-04-17 | 2019-04-17 | A kind of novel steam turbine control system petrol station monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920517532.0U CN209447036U (en) | 2019-04-17 | 2019-04-17 | A kind of novel steam turbine control system petrol station monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209447036U true CN209447036U (en) | 2019-09-27 |
Family
ID=68034556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920517532.0U Active CN209447036U (en) | 2019-04-17 | 2019-04-17 | A kind of novel steam turbine control system petrol station monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209447036U (en) |
-
2019
- 2019-04-17 CN CN201920517532.0U patent/CN209447036U/en active Active
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