CN106168591A - Combustible gas detecting device in a kind of stove - Google Patents
Combustible gas detecting device in a kind of stove Download PDFInfo
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- CN106168591A CN106168591A CN201610693842.9A CN201610693842A CN106168591A CN 106168591 A CN106168591 A CN 106168591A CN 201610693842 A CN201610693842 A CN 201610693842A CN 106168591 A CN106168591 A CN 106168591A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/26—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures using combustion with oxygen under pressure, e.g. in bomb calorimeter
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- Combustion & Propulsion (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The present invention relates to field of gas detection, particularly relate to the detection device of fuel gas in a kind of stove.It has combustor, and described combustion chamber is provided with temperature sensor, and described temperature sensor connects LEL signal picker, and described LEL signal picker connects executor；Described combustor bottom is also associated with gas sample mouth, and described sample tap connects burner hearth；Described combustor bottom is also associated with the combustion-supporting hydrogen flowmeter of combustion-supporting hydrogen inlet and correspondence；Connect at waste gas outlet above described combustor and have for preventing flame from diffusing out the spark arrester of combustor.Usefulness of the present invention is: use combustor directly to burn sampling gas, and by temperature sensor detection calorific value change, sensor is long for service life, measures accurately.Use negative pressure drainage principle that furnace gas samples the extraction without air pump, decrease air pump link, stablize fault-free.Use this device detection furnace high-temperature gas without sampling the cooling procedure of gas, reduce the link of cooling sampling.
Description
Technical field:
The present invention relates to field of gas detection, particularly relate to the detection device of fuel gas in a kind of stove.
Background technology:
The fuel gas detection of prior art has two kinds, and one is catalytic combustion-type, and one is infrared optics type.
Catalytic combustion type fuel gas detector is that the resistance variations after utilizing the heating of refractory metal platinum filament is flammable to measure
Gas concentration, when fuel gas enters detector, the catalyst coat on platinum filament surface causes oxidation reaction, and it produces
Heat makes platinum wire temperature raise, and makes the resistivity of platinum filament change, thus determines the concentration change of fuel gas.This side
Formula detector is that service life is short as sensor probe with the platinum filament of catalyst coat, uses rear changing value big, demarcates tired
Difficult.
Infrared radiation detection apparatus is to utilize infrarefraction optical principle detected gas concentration, along with the difference of gaseous species, granule
Degree, the content difference of moisture content, too big on accuracy of detection impact, the scope of application is little.Both the above detection mode is confined to environment inspection
Survey, for as in industrial furnace the detection of fuel gas be also difficult problem.
Summary of the invention:
The technical problem to be solved is to provide the combustible gas detecting device of a kind of simple in construction, dependable performance, special
It it not the detection device of fuel gas in a kind of stove.
For above technical problem, combustible gas detecting device in a kind of stove that the present invention relates to, there is combustor, described
Combustion chamber is provided with temperature sensor, and described temperature sensor connects LEL signal picker, described LEL signals collecting
Device connects executor；Described combustor bottom is also associated with gas sample mouth, and described sample tap connects burner hearth；Described burning
Bottom, room is also associated with the combustion-supporting hydrogen flowmeter of combustion-supporting hydrogen inlet and correspondence；Above described combustor at waste gas outlet even
It is connected to for preventing flame from diffusing out the spark arrester of combustor.
As preferably, the velocity of discharge of injection rate and waste gas in order to control gas to be detected, described spark arrester connects
There is the depression drainage device for improving the waste gas velocity of discharge, between described spark arrester and depression drainage device, be additionally provided with control waste gas row
Go out the exhaust gas control valve of speed.
As preferably, in order to be discharged by the waste gas in combustor in time, described depression drainage device one end is provided with compression sky
Gas entrance and the compressed-air actuated air relief valve of control, the other end is provided with Waste gas outlet.
As preferably, between described combustor with gas sample mouth, it is additionally provided with demarcation gas entrance and corresponding demarcation air-flow
The purging air effusion meter of gauge and purging air entrance and correspondence.
As preferably, in order to enable the hydrogen of injection fully to burn, between described combustor and purging air entrance also
It is provided with demarcation oxygen intake and the demarcation oxygen flow meter of correspondence.
The need detection fuel gas of certain flow, the combustion heat of increment it is passed through in the combustion of hydrogen indoor of a compact stabilized
Value, by the thermocouple measurement in combustor, thus detects the LEL value of fuel gas, and exports warning and 4-20mA output
Signal.This mode utilizing fuel value change to detect fuel gas, service life is long, and accuracy of detection is high, is suitable for various many
The detection of component fuel gas, applied widely.
Compared with prior art, usefulness of the present invention is: uses combustor directly to burn sampling gas, and is passed by temperature
Sensor detection calorific value change, sensor is long for service life, measures accurately.Use the negative pressure drainage principle sampling nothing to furnace gas
Need the extraction of air pump, decrease air pump link, stablize fault-free.Use this device detection furnace high-temperature gas without sampling gas
Cooling procedure, reduces the link of cooling sampling.
Accompanying drawing illustrates:
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of combustible gas detecting device in stove.
In figure: 1, compressed air inlet；2, air relief valve；3, depression drainage device；4, Waste gas outlet；5, exhaust gas control valve；
6, spark arrester；7, temperature sensor；8, combustor；9, gas sample mouth；10 burner hearths；11, oxygen flow meter is demarcated；12, demarcate
Oxygen intake；13, air-flow gauge is demarcated；14, gas entrance is demarcated；15, purging air effusion meter；16, purging air entrance；17、
Combustion-supporting hydrogen flowmeter；18, combustion-supporting hydrogen inlet；19, executor；20, LEL signal picker.
Detailed description of the invention:
Combustible gas detecting device in a kind of stove that the present invention relates to, as shown in Figure 1: there is combustor 8, in described combustor 8
Portion is provided with temperature sensor 7, and described temperature sensor 7 connects LEL signal picker 20, described LEL signal picker 20
Connect and have executor 19；Described combustor 8 bottom is also associated with gas sample mouth 9, and described gas sample mouth 9 connects burner hearth
11；Described combustor bottom is also associated with the combustion-supporting hydrogen flowmeter 17 of combustion-supporting hydrogen inlet 18 and correspondence；Described combustor 8
It is connected above for preventing flame from diffusing out the spark arrester 6 of combustor 8.
As preferably, the velocity of discharge of injection rate and waste gas in order to control gas to be detected, described spark arrester 6 connects
There is the depression drainage device 3 for improving the waste gas velocity of discharge, be additionally provided with control between described spark arrester 6 and depression drainage device 3 useless
The exhaust gas control valve 5 of the gas velocity of discharge.
As preferably, in order to be discharged by the waste gas in combustor in time, described depression drainage device 3 one end is provided with compression sky
Gas entrance 1 and the compressed-air actuated air relief valve 2 of control, the other end is provided with Waste gas outlet 4.
As preferably, between described combustor 8 and gas sample mouth 9, it is additionally provided with demarcation gas entrance 14 and corresponding demarcation
The purging air effusion meter 15 of air-flow gauge 13 and purging air entrance 16 and correspondence.
As preferably, in order to enable the hydrogen of injection fully to burn, between described combustor 8 and purging air entrance 16
It is additionally provided with demarcation oxygen intake 12 and the demarcation oxygen flow meter 11 of correspondence.
Combustion-supporting hydrogen is by helping fuel gas inlet 18 to enter combustor 8, and is controlled flow by combustion-supporting hydrogen flowmeter 17, in burning
By the stable burning of certain tolerance in room 8.Sampling gas enters combustor 8, in combustor 8 by sample tap 9 in burner hearth 10
Increasing fuel value, the tolerance of sampling gas is controlled by exhaust gas control valve 5.Negative pressure drainage mouth 3 is being drawn when being to be discharged by compressed air
Stream device intracavity forms negative pressure and the waste gas in combustor 8 is drawn.Compressed air is controlled pressure by air relief valve 2.
By fixed value and the value added of sampling gas firing of combustion-supporting combustion of hydrogen in the combustor 8 of temperature sensor 7 perception,
It is transferred to LEL signal picker 20, is converted into 4-20mA output signal, thus controls executor 19 action.Purging air is by blowing
Sweeping air intake 16 to enter purging air effusion meter 15 and control, output signal uses when LEL signal value demarcated by needs, normally examines
Close during survey.When needing to demarcate LEL signal value, demarcate gas and entered by demarcating gas entrance 14, demarcate oxygen by demarcating oxygen intake
12 enter, and are controlled flow by respective streams gauge 11, and LEL signal value carries out 0 demarcation.
It is emphasized that: be the most only introduction and the description of the occupation mode of the present invention, not the present invention made any
Pro forma restriction, any simple modification that above example is made by every technical spirit according to the present invention, equivalent variations
With modification, all still fall within the range of technical solution of the present invention.
Claims (5)
1. a combustible gas detecting device in stove, has combustor (8), it is characterised in that: described combustor 8 is internally provided with
Temperature sensor (7), described temperature sensor (7) connects LEL signal picker (20), described LEL signal picker (20)
Connect and have executor (19)；Described combustor (8) bottom is also associated with gas sample mouth (9), and described gas sample mouth (9) connects
There is burner hearth (10)；Described combustor (8) bottom is also associated with the combustion-supporting hydrogen flowmeter of combustion-supporting hydrogen inlet (18) and correspondence
(17)；Described combustor (8) is connected above for preventing flame from diffusing out the spark arrester (6) of combustor (8).
Combustible gas detecting device in stove the most according to claim 1, it is characterised in that: described spark arrester (6) connects to be had
For improving the depression drainage device (3) of the waste gas velocity of discharge, between described spark arrester (6) and depression drainage device (3), it is additionally provided with control
The exhaust gas control valve (5) of the waste gas velocity of discharge processed.
Combustible gas detecting device in stove the most according to claim 2, it is characterised in that: described depression drainage device (3)
End is provided with compressed air inlet (1) and controls compressed-air actuated air relief valve (2), and the other end is provided with Waste gas outlet (4).
Combustible gas detecting device in stove the most according to claim 1, it is characterised in that: described combustor (8) and gas
Demarcation gas entrance (14) and demarcation air-flow gauge (13) of correspondence and purging air entrance (16) it is additionally provided with between sample tap (9)
And the purging air effusion meter (15) of correspondence.
Combustible gas detecting device in stove the most according to claim 4, it is characterised in that: described combustor (8) and purging
Demarcation oxygen intake (12) and the demarcation oxygen flow meter (11) of correspondence it is additionally provided with between air intake (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693842.9A CN106168591B (en) | 2016-08-22 | 2016-08-22 | Combustible gas detecting device in a kind of furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693842.9A CN106168591B (en) | 2016-08-22 | 2016-08-22 | Combustible gas detecting device in a kind of furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106168591A true CN106168591A (en) | 2016-11-30 |
| CN106168591B CN106168591B (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610693842.9A Active CN106168591B (en) | 2016-08-22 | 2016-08-22 | Combustible gas detecting device in a kind of furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208321A (en) * | 2019-07-04 | 2019-09-06 | 上海智昂环保科技有限公司 | A kind of combustible gas explosion limit analysis system |
| CN111366609A (en) * | 2020-03-15 | 2020-07-03 | 莱浦顿(上海)工程技术有限公司 | Combustible gas analyzer |
| CN111503647A (en) * | 2020-04-10 | 2020-08-07 | 中国船舶重工集团公司第七一八研究所 | Negative pressure ignition and combustion system and method for using negative pressure ignition and stable combustion of system |
| CN117871451A (en) * | 2024-03-12 | 2024-04-12 | 南京霍普斯科技有限公司 | System for measuring combustion temperature and monitoring combustible explosive gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002286644A (en) * | 2001-03-22 | 2002-10-03 | Mitsubishi Heavy Ind Ltd | Gasifying apparatus |
| CN104569038A (en) * | 2013-10-11 | 2015-04-29 | 上海锦宜仪器有限公司 | Device and method for combustible gas detection |
| CN206057230U (en) * | 2016-08-22 | 2017-03-29 | 苏州工业园区姑苏科技有限公司 | Combustible gas detecting device in stove |
-
2016
- 2016-08-22 CN CN201610693842.9A patent/CN106168591B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002286644A (en) * | 2001-03-22 | 2002-10-03 | Mitsubishi Heavy Ind Ltd | Gasifying apparatus |
| CN104569038A (en) * | 2013-10-11 | 2015-04-29 | 上海锦宜仪器有限公司 | Device and method for combustible gas detection |
| CN206057230U (en) * | 2016-08-22 | 2017-03-29 | 苏州工业园区姑苏科技有限公司 | Combustible gas detecting device in stove |
Non-Patent Citations (1)
| Title |
|---|
| 宋小坚: ""可燃气体传感器研究进展"", 《煤气与热力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208321A (en) * | 2019-07-04 | 2019-09-06 | 上海智昂环保科技有限公司 | A kind of combustible gas explosion limit analysis system |
| CN111366609A (en) * | 2020-03-15 | 2020-07-03 | 莱浦顿(上海)工程技术有限公司 | Combustible gas analyzer |
| CN111503647A (en) * | 2020-04-10 | 2020-08-07 | 中国船舶重工集团公司第七一八研究所 | Negative pressure ignition and combustion system and method for using negative pressure ignition and stable combustion of system |
| CN117871451A (en) * | 2024-03-12 | 2024-04-12 | 南京霍普斯科技有限公司 | System for measuring combustion temperature and monitoring combustible explosive gas |
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| Publication number | Publication date |
|---|---|
| CN106168591B (en) | 2019-03-29 |
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Effective date of registration: 20190626 Address after: 215104 No. 8 Xishui Road, Wangshan Industrial Park, Yuexi, Wuzhong Development Zone, Suzhou City, Jiangsu Province Patentee after: SUZHOU TIANLONG CHAIN CO., LTD. Address before: 215121 No. 9 Sifang Street, Weiting Town, Suzhou Industrial Park, Jiangsu Province Patentee before: Suzhou Industrial Park Gusu Technology Co., Ltd. |