CN110031593A - A kind of calorific value of gas detection device based on gas content detection - Google Patents
A kind of calorific value of gas detection device based on gas content detection Download PDFInfo
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- CN110031593A CN110031593A CN201910384219.9A CN201910384219A CN110031593A CN 110031593 A CN110031593 A CN 110031593A CN 201910384219 A CN201910384219 A CN 201910384219A CN 110031593 A CN110031593 A CN 110031593A
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- gas
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- pressure transmitter
- calorific value
- regulating valve
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 69
- 230000001105 regulatory effect Effects 0.000 claims abstract description 27
- 239000003034 coal gas Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 24
- 239000002737 fuel gas Substances 0.000 abstract description 11
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000003345 natural gas Substances 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009841 combustion method Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0034—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array comprising neural networks or related mathematical techniques
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention provides a kind of calorific value of gas detection device based on gas content detection, including cabinet and the intracorporal constant pressure regulating valve of case, first pressure transmitter, second pressure transmitter, flow-through orifice, differential pressure transmitter, CO sensor, CH4 sensor and data acquisition controller.Constant pressure regulating valve, flow-through orifice, CO sensor and CH4 sensor are sequentially connected by pipeline by coal gas input port, the outlet of CH4 sensor connects coal gas delivery outlet；First pressure transmitter, second pressure transmitter, differential pressure transmitter, CO sensor, CH4 sensor connect the port AI of data acquisition controller by signal cable.Pass through the component content of primary combustion object in detection coal gas, multiplied by respective unit calorific value, obtain the instantaneous gross calorific value of coal gas, for the calorific value of the various fuel gas such as continuous high speed measurement blast furnace gas, coke-stove gas, producer gas, liquefied gas, natural gas, mixed gas, the ideal instrument of fuel gas with low heat value can be especially monitored.
Description
Technical field
The present invention relates to gas sensor technical field, in particular to a kind of calorific value of gas inspection based on gas content detection
Survey device.
Background technique
In the industrial productions such as metallurgy, coking, building materials, town gas, sphere of life, burning mixture combustion is widely used
Material, common fuel gas have blast furnace gas, coal gas of converter, coke-stove gas, producer gas, natural gas, liquefied gas, biogas
Deng, in order to efficiently use the gaseous fuel of various different calorific values, several gaseous fuels is generally required to be used in mixed way, it is mixed to guarantee
Close the needs that gaseous fuel calorific value meets the productions such as industrial furnace.When several gaseous fuels are used in mixed way, due to producing gas
The component ratio of the influence of source fluctuating factor, mixed gas changes frequent occurrence, and calorific value also changes therewith.Work as gaseous fuel
Calorific value when changing, such as monitor and adjusted not in time, only cannot be fine by the flow and pressure of control gaseous fuel
Realization industrial furnace etc. the needs that normally produce of Thermal Equipment.The caloric value instrument of selection in domestic is using perseverance all the time
Pressure, constant current combustion method, detect mv value by zirconium oxide, thermoelectric pile, calculate its and correspond to thermal content, such instrument principle is simple,
Low cost, but measurement accuracy it is not high, it is big using risk, can not detect that fuel gas with low heat value, maintenance be big, maintenance personnel works
Intensity is high.
Summary of the invention
In order to overcome the shortcomings in the background art, the present invention provides a kind of calorific value of gas detection based on gas content detection
Device obtains the instantaneous total of coal gas multiplied by respective unit calorific value by the component content of primary combustion object in detection coal gas
Calorific value, it is each for continuous high speed measurement blast furnace gas, coke-stove gas, producer gas, liquefied gas, natural gas, mixed gas etc.
The calorific value of kind fuel gas, can especially monitor the ideal instrument of fuel gas with low heat value.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of calorific value of gas detection device based on gas content detection, including cabinet and the intracorporal constant pressure regulating valve of case,
First pressure transmitter, second pressure transmitter, flow-through orifice, differential pressure transmitter, CO sensor, CH4 sensor and data are adopted
Collect controller.
The connection relationship of gas circuit are as follows: constant pressure regulating valve, flow-through orifice, CO are sequentially connected by pipeline by coal gas input port and passed
The outlet of sensor and CH4 sensor, CH4 sensor connects coal gas delivery outlet；
Pressure point is respectively set on the forward and backward pipeline of constant pressure regulating valve, is separately connected first pressure transmitter and second
The gas circuit input terminal of pressure transmitter；
The differential pressure measuring point of flow-through orifice passes through piping connection differential pressure transmitter.
The connection relationship of circuit are as follows: first pressure transmitter, second pressure transmitter, differential pressure transmitter, CO sensor,
CH4 sensor connects the port AI of data acquisition controller by signal cable.
Further, the first solenoid valve and second solenoid valve are additionally provided on the pipeline of constant pressure regulating valve front end, coal gas is defeated
Entrance connects constant pressure regulating valve front end by the first solenoid valve, and Standard Gases input port connects constant pressure regulating valve by second solenoid valve
Front end.
Further, the data acquisition controller is PLC or is industrial control all-in-one machine.
Further, the data acquisition controller can also be electrically connected by the port AO and constant pressure regulating valve.
It further, further include the HMI being set on cabinet panel, HMI passes through communication cable and data acquisition controller
It is connected.
Compared with prior art, the beneficial effects of the present invention are:
1) coal gas is obtained multiplied by respective unit calorific value by the component content of primary combustion object in detection coal gas
Instantaneous gross calorific value measures blast furnace gas, coke-stove gas, producer gas, liquefied gas, natural gas, Mixture Density Networks for continuous high speed
The calorific value of the various fuel gas such as gas can especially monitor the ideal instrument of fuel gas with low heat value；
2) higher than traditional combustion method calorimetric value measurement accuracy, structure is simple, safe and reliable, easy to maintain；
3) pressure of measurement pipeline is adjusted with constant pressure regulating valve, two pressure transmitter monitorings adjust forward and backward pipeline pressure
Power realizes that constant pressure is adjusted, and guarantees the constant pressure measurement of measurement pipeline；
4) flow of signal piping can be measured with orifice flowmeter cooperation differential pressure transmitter；
5) two solenoid valves of input port setting, one is used to open when conventional detection, another is for being passed through Standard Gases
Carry out opening when calibration；
6) be widely used in the calorific values such as metallurgy, chemical industry, building materials, town gas detection with automatic control system in and gas making factory
On various gas source production lines, it also can be used for coke oven, hot-blast stove, heating furnace, annealing furnace, gas tank, air accumulator, gas mixing device
Etc. in equipment.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention；
Fig. 2 is control system block diagram of the invention.
In figure: 1- cabinet 2- the first solenoid valve 3- second solenoid valve 4-CO sensor 5- first pressure transmitter 6-
10 differential pressure transmitter 11-AC/DC power supply of constant pressure regulating valve 7- second pressure transmitter 8-CH4 sensor 9- flow-through orifice
12- data acquisition controller 13- cabinet door-plate 14- touch screen.
Specific embodiment
Specific embodiment provided by the invention is described in detail below in conjunction with attached drawing.
As shown in Figs. 1-2, a kind of calorific value of gas detection device based on gas content detection, including cabinet (1) and cabinet
(1) constant pressure regulating valve (6), first pressure transmitter (5), second pressure transmitter (7), flow-through orifice (9), differential pressure transporting in
Device (10), CO sensor (4), CH4 sensor (8) and data acquisition controller (12).
The connection relationship of gas circuit are as follows:
By coal gas input port by pipeline be sequentially connected constant pressure regulating valve (6), flow-through orifice (9), CO sensor (4) and
The outlet of CH4 sensor (8), CH4 sensor (8) connects coal gas delivery outlet；
Pressure point is respectively set on the forward and backward pipeline of constant pressure regulating valve (6), is separately connected first pressure transmitter (5)
With the gas circuit input terminal of second pressure transmitter (7)；
Flow-through orifice (9) differential pressure measuring point passes through piping connection differential pressure transmitter (10).
The connection relationship of circuit are as follows: first pressure transmitter (5), second pressure transmitter (7), differential pressure transmitter (10),
CO sensor (4), CH4 sensor (8) pass through the port AI of signal cable connection data acquisition controller (12).
The first solenoid valve (2) and second solenoid valve (3) are additionally provided on the pipeline of constant pressure regulating valve (6) front end, coal gas is defeated
Entrance connects constant pressure regulating valve (6) front end by the first solenoid valve (2), and Standard Gases input port is connected by second solenoid valve (3)
Constant pressure regulating valve (6) front end.
The data acquisition controller (12) is PLC or is industrial control all-in-one machine.PLC can be using any one brand
Small PLC, industrial control all-in-one machine can use and grind auspicious industrial control all-in-one machine.
The data acquisition controller (12) can also be electrically connected by the port AO and constant pressure regulating valve (6).Constant pressure
Regulating valve (6) can be controlled by data acquisition controller (12), can not also be controlled by data acquisition controller (12),.
It being also provided with HMI (14) on cabinet (1) panel (13) of the invention, the present embodiment is the touch screen of the Kunlun on-state,
HMI (14) is connected by communication cable with data acquisition controller (12).If data acquisition controller (12) uses PLC,
It needs that touch screen (14) matched with its is arranged, for operating and showing.Touch screen is not necessarily to if selecting industrial control all-in-one machine.
Fuel gases calorific value of the invention detects control method are as follows:
Step 1: the tested sampled probe of combustion gas enters sample gas pretreatment unit, after dedusting, water removal, cooling treatment
Sample gas be admitted to calorific value of gas detection device；
Step 2: point for being configured with more set different principles according to sample gas components difference is tested in calorific value of gas detection device
Analyse sensor, including CO sensor (4) and CH4 sensor (8)；
Step 3: the percentage of the various gases in sensor (CO sensor (4) and CH4 sensor (8)) measurement sample gas
Content, data acquisition controller (12) acquire the measuring signal of each road sensor, then these Component Percent contents multiplied by each
From unit calorific value, the instantaneous gross calorific value amount of tested combustion gas can be obtained by operation；
Step 4: data acquisition controller (12) calculate and by HMI (14) show the magnificent white value of tested gas, calorific value and
Rate of specific gravity (or density value).
The present invention must be produced coal by the component content of primary combustion object in detection coal gas multiplied by respective unit calorific value
The instantaneous gross calorific value of gas for continuous high speed measurement blast furnace gas, coke-stove gas, producer gas, liquefied gas, natural gas, mixes
The calorific value for closing the various fuel gas such as coal gas, can especially monitor the ideal instrument of fuel gas with low heat value；Than traditional combustion method
Calorimetric value measurement accuracy is high, structure is simple, safe and reliable, easy to maintain.
The present invention adjusts the pressure of measurement pipeline with constant pressure regulating valve (6), and two pressure transmitters (5) and (7) monitoring are adjusted
Forward and backward loine pressure is saved, realizes that constant pressure is adjusted, guarantees the constant pressure measurement of measurement pipeline；Cooperate differential pressure with orifice flowmeter (9)
Transmitter (10) can measure the flow of signal piping.
Two solenoid valves (2) of input port setting and (3), one is used to open when conventional detection, another is for being passed through
Standard Gases carry out opening when calibration.
Above embodiments are implemented under the premise of the technical scheme of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
Not mentionleting alone bright is conventional method.
Claims (5)
1. a kind of calorific value of gas detection device based on gas content detection, which is characterized in that including cabinet and the intracorporal perseverance of case
Press regulating valve, first pressure transmitter, second pressure transmitter, flow-through orifice, differential pressure transmitter, CO sensor, CH4 sensor
And data acquisition controller；
The connection relationship of gas circuit are as follows: constant pressure regulating valve, flow-through orifice, CO sensor are sequentially connected by pipeline by coal gas input port
Outlet with CH4 sensor, CH4 sensor connects coal gas delivery outlet；
Pressure point is respectively set on the forward and backward pipeline of constant pressure regulating valve, is separately connected first pressure transmitter and second pressure
The gas circuit input terminal of transmitter；
The differential pressure measuring point of flow-through orifice passes through piping connection differential pressure transmitter；
The connection relationship of circuit are as follows: first pressure transmitter, second pressure transmitter, differential pressure transmitter, CO sensor, CH4 are passed
Sensor connects the port AI of data acquisition controller by signal cable.
2. a kind of calorific value of gas detection device based on gas content detection according to claim 1, which is characterized in that
The first solenoid valve and second solenoid valve are additionally provided on the pipeline of constant pressure regulating valve front end, coal gas input port is connected by the first solenoid valve
Constant pressure regulating valve front end is connect, Standard Gases input port connects constant pressure regulating valve front end by second solenoid valve.
3. a kind of calorific value of gas detection device based on gas content detection according to claim 1, which is characterized in that institute
The data acquisition controller stated is PLC or is industrial control all-in-one machine.
4. a kind of calorific value of gas detection device based on gas content detection according to claim 1, which is characterized in that institute
The data acquisition controller stated also passes through the port AO and constant pressure regulating valve is electrically connected.
5. a kind of calorific value of gas detection device based on gas content detection according to claim 1, which is characterized in that also
Including the HMI being set on cabinet panel, HMI is connected by communication cable with data acquisition controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384219.9A CN110031593A (en) | 2019-05-09 | 2019-05-09 | A kind of calorific value of gas detection device based on gas content detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384219.9A CN110031593A (en) | 2019-05-09 | 2019-05-09 | A kind of calorific value of gas detection device based on gas content detection |
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| Publication Number | Publication Date |
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| CN110031593A true CN110031593A (en) | 2019-07-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910384219.9A Pending CN110031593A (en) | 2019-05-09 | 2019-05-09 | A kind of calorific value of gas detection device based on gas content detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029396A (en) * | 2021-02-23 | 2021-06-25 | 广东韶钢松山股份有限公司 | Gas on-line monitoring system and method |
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