CN202631013U - On-line coal gas flow monitoring system - Google Patents
On-line coal gas flow monitoring system Download PDFInfo
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- CN202631013U CN202631013U CN 201220224514 CN201220224514U CN202631013U CN 202631013 U CN202631013 U CN 202631013U CN 201220224514 CN201220224514 CN 201220224514 CN 201220224514 U CN201220224514 U CN 201220224514U CN 202631013 U CN202631013 U CN 202631013U
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- flow sensor
- monitoring system
- transmitter
- photoisolator
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Abstract
The utility model relates to an on-line monitoring system and discloses an on-line coal gas flow monitoring system. The monitoring system comprises a PLC control system, an industrial computer, a flow sensor, a transducer and an optoelectronic isolator, wherein the PLC control system comprises a CPU module, as well as a power module, an Ethernet communication module and an analogue value input module which are respectively connected with the CPU module; the flow sensor is mounted in a gas pipe to be measured; the signal output end of the flow sensor is connected with the input end of the transducer; the output end of the transducer is connected with the input end of the optoelectronic isolator; the output end of the optoelectronic isolator is connected with the analogue value input module; and the industrial computer is connected with the Ethernet communication module. The monitoring system can measure and display the pressure value of a coal gas feed system in time, and has the advantages of operational reliability, strong universality, strong extension ability and the like.
Description
Technical field
The utility model relates to a kind of online monitoring system, particularly a kind of gas flow online monitoring system.
Background technology
In metallurgy industry; The purified gas that obtains behind the blast furnace gas dry dusting is exported to the user and is used, and what of gas output are the primary factor that influence enterprise and user each side economic interests; But because contain a certain amount of dust and moisture content in the coal gas, the precision of online actual measured amount is a technical barrier.When gas supply system occurs when unstable, will cause follow-up stock gas differential pressure generating TRT system or the hot blast stove system can not stable operation as can not in time taking effective control measure.
The utility model content
The purpose of the utility model provides a kind ofly can in time measure and show gas supply system force value, the gas flow online monitoring system that functional reliability is strong.
The utility model for realizing the technical scheme that above-mentioned purpose adopts is: a kind of gas flow online monitoring system; This system comprises PLC control system, industrial computer, flow sensor, transmitter, photoisolator; The PLC control system comprises CPU module and the power module that is connected with the CPU module respectively, ethernet communication module, analog quantity load module; Flow sensor is installed in the gas pipe that will measure, and the signal output part of flow sensor is connected with the input end of transmitter, and the output terminal of transmitter is connected with the input end of photoisolator; The output terminal of photoisolator is connected with the analog quantity load module, and industrial computer is connected with the ethernet communication module.
Wherein said system is provided with n flow sensor, a n transmitter, a n photoisolator; N is the natural number greater than 1; N flow sensor is installed in respectively in the different gas pipe of diverse location in the same gas pipe or same induction system; The signal output part of flow sensor n is connected with the input end of transmitter n, and the output terminal of transmitter n is connected with the input end of photoisolator n, and the output terminal of n photoisolator is connected with the analog quantity load module respectively.
Wherein said analog quantity load module is 8 tunnel 12 4-20mA, 2 line system analog quantity load modules.
Wherein said power module is the DC24V DC power supplier.
Owing to adopted such scheme, the utility model has following beneficial effect with existing other similar compared with techniques:
1, can in time measure and show the gas supply system force value
The utility model gas flow online monitoring system is owing to be equipped with flow sensor in gas pipe; Flow sensor is installed in respectively in the different gas pipe of diverse location in the same gas pipe or same induction system; Flow sensor can be measured the differential pressure signal in the gas piping; Transmitter converts differential pressure signal to current signal; Again current signal is transferred to the CPU module through photoisolator and analog quantity load module, through the ethernet communication module force value is presented at industrial computer after the analysis of CPU module count and keeps watch on the panel, normal pressure value is set in system; As long as the force value that detects exceeds normal pressure value, can be through with the supporting control system of the utility model gas flow online monitoring system gas supply system being taked control measure.
2, functional reliability and highly versatile
The utility model gas flow online monitoring system hardware components modularization, transmitter converts differential pressure signal to current signal, is transferred to the analog quantity load module through photoisolator; Input and output insulation are isolated; The signal one-way transmission, no feedback influence, strong interference immunity; Response speed is fast; Functional reliability and highly versatile at the scene, friendly programmed environment let the people can accomplish in the shortest time that more loaded down with trivial details task is programmed and update routine easily, are convenient to left-hand seat especially.
3, extended capability is strong
Other function only need increase load module and at the configuration interface of industrial computer if what is realized, and the program segment that on original procedure basis, adds expanded function gets final product.
Below in conjunction with accompanying drawing and embodiment the utility model gas flow online monitoring system is described further.
Description of drawings
Fig. 1 is the block diagram of the utility model gas flow online monitoring system.
Embodiment
As shown in Figure 1, the utility model gas flow online monitoring system, this system comprises PLC control system, industrial computer, flow sensor, transmitter, photoisolator.PLC control system 1 comprises CPU module and the power module that is connected with the CPU module respectively, ethernet communication module, analog quantity load module.Flow sensor and transmitter are installed in the gas pipe that will measure; The signal output part of flow sensor is connected with the input end of transmitter; The output terminal of transmitter is connected with the input end of photoisolator, and the output terminal of photoisolator is connected with the analog quantity load module.Industrial computer is connected with the ethernet communication module through the Ethernet netting twine.
Be provided with n flow sensor, a n transmitter, a n photoisolator (only illustrate among the figure 3 the 1st, 2 and n group) in the native system; N is for greater than 1 natural number (n is a monitoring point quantity), and n flow sensor is installed in respectively in the different gas pipe of diverse location in the same gas pipe or same induction system.Shown in figure; The signal output part of flow sensor 1 is connected with the input end of transmitter 1; The output terminal of transmitter 1 is connected with the input end of photoisolator 1, and the signal output part of flow sensor 2 is connected with the input end of transmitter 2, and the output terminal of transmitter 2 is connected with the input end of photoisolator 2; The signal output part of flow sensor 3 is connected with the input end of transmitter 3; The signal output part of flow sensor n is connected with the input end of transmitter n, and the output terminal of transmitter n is connected with the input end of photoisolator n, and the output terminal of n photoisolator is connected with the analog quantity load module respectively.Certainly, if the n value is bigger, polylith analog quantity load module can be set when analog quantity load module interface is not enough, this moment, polylith analog quantity load module was connected with the CPU module simultaneously.
Said analog quantity load module is 8 tunnel 12 4-20mA, 2 line system analog quantity load modules, and transmitter is 2 line system 4-20mA transmitters, and transmitter is connected with 1 tunnel analog input channel terminal (not shown) of analog quantity load module through 2 core cables.The CPU module of PLC control system 1, power module, ethernet communication module, analog quantity load module are separately positioned on the PLC backboard, and above-mentioned each module links to each other directly continuous through the PLC backboard.Power module is the DC24V DC power supplier, and PLC control system 1 inner all modules are supplied power through the PLC backboard by the DC24V DC power supplier.
Measuring principle: flowmeter is a kind of insert type flow measuring instrument, in pipeline, inserts a flow sensor, when the fluid flows quantity sensor, meets flow path direction in its front portion and produces a high pressure distributive province, produces a low pressure distributive province at its rear portion.Flow sensor has by certain regularly arranged many to pressure port (being generally three pairs) at high and low nip, measures the total pressure of fluid respectively, comprises average velocity pressure P l and static pressure P2.P1 and P2 are introduced transmitter respectively, measure differential pressure △ P=P1-P2, the size of △ P reflection fluid average velocity can be extrapolated the flow of fluid with this.The flow sensor that inserts in the casing outlet conduit in time detects differential pressure value and outputs to transmitter.Differential pressure then abnormal conditions such as dustiness exceeds standard possibly occur outside range of control.
During work, flow sensor converts on-the-spot gas flow into differential pressure signal, can increase the quantity of flow sensor, transmitter and photoisolator according to the increase of field monitoring point; Transmitter converts the detected differential pressure signal of flow sensor into the 4-20mA current signal of standard; The effect of photoisolator is to transmit electric signal, and input and output insulation are isolated, the signal one-way transmission, and no feedback influence, strong interference immunity, response speed is fast; The electric signal that 1 pair of scene of PLC control system sends carries out the periodicity computing through the program that writes in advance; What obtain that the operator can directly see understands dustiness numerical value; And the supervision panel that finally passes through industrial computer shows with forms such as numerical value or rod figure; Normal pressure value (can pass through software setting) is set in system; As long as the force value that detects exceeds normal pressure value (abnormal conditions such as dustiness exceeds standard possibly occur), can be through with the supporting control system (control system is not the inventive point of the utility model, does not do detailed description at this) of the utility model gas flow online monitoring system gas supply system being taked control measure.Certainly, we also can be as required show the dustiness real-time curve in display screen, and can printing reports etc.When abnormal conditions such as dustiness exceeds standard appearred in the monitoring point, at this moment, also there was sound and light alarm in system, is convenient to the operator and in time takes the necessary measures.
Claims (4)
1. gas flow online monitoring system; It is characterized in that; This system comprises PLC control system, industrial computer, flow sensor, transmitter, photoisolator, and the PLC control system comprises CPU module and the power module that is connected with the CPU module respectively, ethernet communication module, analog quantity load module, and flow sensor is installed in the gas pipe that will measure; The signal output part of flow sensor is connected with the input end of transmitter; The output terminal of transmitter is connected with the input end of photoisolator, and the output terminal of photoisolator is connected with the analog quantity load module, and industrial computer is connected with the ethernet communication module.
2. gas flow online monitoring system as claimed in claim 1; It is characterized in that; Said system is provided with n flow sensor, a n transmitter, a n photoisolator; N is the natural number greater than 1, and n flow sensor is installed in respectively in the different gas pipe of diverse location in the same gas pipe or same induction system, and the signal output part of flow sensor n is connected with the input end of transmitter n; The output terminal of transmitter n is connected with the input end of photoisolator n, and the output terminal of n photoisolator is connected with the analog quantity load module respectively.
3. gas flow online monitoring system as claimed in claim 1 is characterized in that, said analog quantity load module is 8 tunnel 12 4-20mA, 2 line system analog quantity load modules.
4. gas flow online monitoring system as claimed in claim 1 is characterized in that, said power module is the DC24V DC power supplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224514 CN202631013U (en) | 2012-05-18 | 2012-05-18 | On-line coal gas flow monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224514 CN202631013U (en) | 2012-05-18 | 2012-05-18 | On-line coal gas flow monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631013U true CN202631013U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220224514 Expired - Lifetime CN202631013U (en) | 2012-05-18 | 2012-05-18 | On-line coal gas flow monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631013U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866069A (en) * | 2014-03-20 | 2014-06-18 | 莱芜钢铁集团有限公司 | Centralized online monitoring system of multiple blast furnaces coal gas environment and control method thereof |
| CN109406720A (en) * | 2018-09-19 | 2019-03-01 | 淮北矿业股份有限公司 | A kind of long-range monitoring coke oven on-line checking data |
| CN113252099A (en) * | 2021-06-15 | 2021-08-13 | 阳春新钢铁有限责任公司 | Automatic detection loop system for optimizing primary meter |
-
2012
- 2012-05-18 CN CN 201220224514 patent/CN202631013U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866069A (en) * | 2014-03-20 | 2014-06-18 | 莱芜钢铁集团有限公司 | Centralized online monitoring system of multiple blast furnaces coal gas environment and control method thereof |
| CN109406720A (en) * | 2018-09-19 | 2019-03-01 | 淮北矿业股份有限公司 | A kind of long-range monitoring coke oven on-line checking data |
| CN113252099A (en) * | 2021-06-15 | 2021-08-13 | 阳春新钢铁有限责任公司 | Automatic detection loop system for optimizing primary meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |