CN205808782U - A kind of vacuum withdraw device of short neck nozzle - Google Patents
A kind of vacuum withdraw device of short neck nozzle Download PDFInfo
- Publication number
- CN205808782U CN205808782U CN201620606469.4U CN201620606469U CN205808782U CN 205808782 U CN205808782 U CN 205808782U CN 201620606469 U CN201620606469 U CN 201620606469U CN 205808782 U CN205808782 U CN 205808782U
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- CN
- China
- Prior art keywords
- probe
- analyser
- short neck
- air chamber
- neck nozzle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
This utility model belongs to instrument and meter for automation and controls technical field, is specifically related to the vacuum withdraw device of a kind of short neck nozzle, and this device includes that probe tube, probe tube are wrapped in refractory part, and refractory part is located in furnace wall；Described probe tube one end is exposed furnace wall end face and is stretched in burner hearth, the probe tube other end is connected with detection air chamber one end, detection air chamber is provided with analyser probe, the probe test side of analyser probe extends to detect in the middle part of air chamber, the detection air chamber other end is connected with short neck nozzle threaded one end by pipeline, the short neck nozzle other end is threaded the free air pressure draw, air compressed pipe is provided with suspended body flowmeter and pressure regulator valve, this utility model is the most simple and practical in practicality, easy to make, and it is safe and reliable, eliminate the measurement delay that analyser uses sampling to bring, fault rate is high, the drawback that maintenance cost is high；Avoid Venturi tube technology and require high, to be difficult to processing unfavorable factor.
Description
Technical field
This utility model belongs to instrument and meter for automation and controls technical field, is specifically related to the vacuum drawn dress of a kind of short neck nozzle
Put.
Background technology
At steel industry, the significance level of industry furnace gas content detection analysis result within burner hearth decides fire box temperature
Control, the adjustment etc. of air-fuel ratio decide the relevant factor of quality of product.So the detection mode of burner hearth furnace gas content is just
It is particularly important.The purpose of analysis of fumes automatic sampling to be reached.The furnace gas of extraction becomes sample gas, it is necessary to representative,
The component information of whole furnace gases of detected burner hearth can be reflected.
The most the most frequently used analyser sample gas analyzes detection mode direct insertion, pull-out type, direct insertion analyser, pull-out type
Analyser is typically all and is made up of detection probe, transducer.The relevant parameter that detection probe is measured delivers to transducer by cable
Carry out Data Analysis Services, obtain furnace gas related component.Direct insertion analyser detection probe is inserted directly into inside burner hearth, directly connects
Touch tested furnace gas, carry out the analysis of furnace gas component.Due to the use demand of technical standard by analyser detection probe, it is merely able to
It is suitable for measuring the furnace gas of about 200-300 DEG C.And it is vulnerable to burner hearth internal dust, the pollution of impurity, measurement accuracy, stable
Property can not get ensure.Maintenance period is short, and analyser damage frequency is high.In view of above drawback, the detection side of this type of analyser sample gas
Formula is the most progressively eliminated.
Pull-out type analyser feature is that detection probe is not directly contacted with high-temperature furnace gas, and furnace gas is drawn out of outside stove, enters back into inspection
Probing head carries out content analysis.The sample gas of pull-out type analyser is extracted the commonly used suction pump of mode out and is carried out, but is typically based on and needs
Want to install sampling pretreatment device additional, it is therefore an objective to representational sample gas will be gathered, and according to analyzing the purpose of test, to dividing
Analysis sample gas processes, specifically include filtrations, cooling, voltage stabilizing, current stabilization, constant temperature, dehumidify, suction etc., enter back into and detect device and divide
Analysis.In-line analyzer performance height, can reliability service, the performance depending greatly on sampling is good
Bad, whether reliable.Sampling pretreatment device includes that filter (one-level, secondary filter), gas-liquid separator, draining are wriggled
The devices such as pump, suction pump, condenser, connection gas circuit.The analyser of employing pretreatment unit is longer due to pipeline, and measurement result is stagnant
The rear time is big, easily causes the erroneous judgement of operator.In this device, adnexa is more, and any link goes wrong and all directly affects point
The measurement accuracy of analyzer and service life.As can be seen here, a whole set of analyser (comprising sampling pretreatment device) is belonging to complexity
The electrical integrated device of instrument, sampling pre-processing device systems technology integrated complex, cover chemistry, physics, electronic technology, calculating
The knowledge such as machine, machinery, sensing technology, chemical analysis, its expense is to account for a whole set of analyser more than 50%.And due to on-line analysis
The environment that instrument is used is different, and detection object is different, and this makes the technical difficulty difference sampling pretreatment system system the biggest,
It is the biggest that its device constitutes difference.
The sample gas of pull-out type analyser is extracted mode out and is also had another sampling method: Venturi tube drainage.The method
Utilizing gas at venturi Bottomhole pressure, at the narrowest place of pipeline, dynamic pressure reaches maximum, and static pressure minimizes
Value.The speed of gas rises because of the relation of cross-section variation of shoving.Whole air-flow will can experience pipe in the same time
Road reduces process, thus pressure also reduces in the same time, and then produces pressure differential, and this pressure differential is for providing one to fluid
Individual external suction.Utilize this suction to reach to extract the internal furnace gas of burner hearth and carry out the purpose of component analysis.Venturi tube internal structure
Size there are certain requirements, it is difficult to processing, typically is required to make, process according to onsite application by professional production producer.This for
From the point of view of user, Different field, use requirement, code requirement the most different.So using Venturi tube to come collectively as analyser
The draw-out device of sample gas is the most difficult.
The performance indications weighing in-line analyzer mainly have the following aspects: certainty of measurement, response time, measurement are stable
Property, mean free error time.In sum, can so say, the performance indications of these keys largely will depend on
Can the sampling pretreatment device of analyser or the technical property requirements of Venturi tube meet.
Analyser pretreatment unit often breaks down in process of production, being provided in real work of Venturi tube
It is difficult to carry out again.On important production line, it is not allow shutdown maintenance, so can largely effect on yield, bring serious economy
Loss.And, the furnace gas content analysis data of burner hearth are all band interlocked control, when monitor value is below or above a certain critical
Blowing out will be caused, so needing to take feasible effective method to reduce or eliminate the abnormal production brought of analyser to damage during value
Lose.Therefore, it is critical only that the effective operational reliability extending analysis meter device is the problem that we need to solve.
Currently for solving the sampling mode of analyser almost without the most thorough method, when scene occurs analyzer system
During fault, the most all can have influence on the product quality of production or directly result in blowing out.
Utility model content
The purpose of this utility model is that providing a kind of is suitable to in-line analyzer detection mode, the device of sampling mode optimization
And technology, meet and produce required analytical data, it is ensured that being used for inside industry burner hearth of the requirement that analyzer system is properly functioning
The vacuum withdraw device of furnace gas sample gas.
For achieving the above object, the following technical scheme of this utility model offer:
The vacuum withdraw device of a kind of short neck nozzle, this device includes that probe tube 3, probe tube 3 are wrapped in refractory part 4
In, refractory part 4 is located in furnace wall 1；Described probe tube 3 one end is exposed furnace wall 1 end face and is stretched in burner hearth 2, probe tube 3 another
Holding and be connected with detection air chamber 7 one end, detection air chamber 7 is provided with analyser probe 5, and the probe test side 6 of analyser probe 5 extends
In the middle part of detection air chamber 7, detection air chamber 7 other end is connected with short neck nozzle 9 threaded one end by pipeline, short neck nozzle 9 another
Holding threaded is the free air pressure draw 11, and air compressed pipe 11 is provided with suspended body flowmeter 8 and pressure regulator valve 10.
Preferably, short neck nozzle 9 is become by rustless steel or copper.
Compared with prior art, the beneficial effects of the utility model are:
1) this utility model is by the application in analyzer sample link of the short neck nozzle vacuum withdraw device, changes stove
The extraction mode of the internal sample gas of thorax, when utilizing compressed air to empty with furnace gas, flow velocity increases, the vacuum back pressure of pressure abrupt release
Principle, drives furnace atmosphere to flow through analyser probe with certain flow, reaches to analyze the purpose of detection Gas content component.
2) this utility model simple in construction, it is convenient to implement, reached lifting analyzer system measurement accuracy, stability,
The purpose of rapidity, has ensured the technology requirement of analyzer system on-line checking.
3) this utility model is started with from solving practical site problems, reduces analyser fault handling time, it is ensured that production
Stable operation, can be widely applied to the sample analysis of industry burner hearth inner furnace Gas content component, and is actually needed according to scene,
Pressure according to drainage compression air adjusts the purpose reaching stable sample gas flow, and ultimate guarantee analyser detection probe is abundant
Contact measured furnace gas, carry out the analysis of content component, this device is the most simple and practical in practicality, easy to make, Er Qiean
Complete reliable, eliminate the measurement delay that analyser uses sampling to bring, the fraud that fault rate is high, maintenance cost is high
End；Avoid Venturi tube technology and require high, to be difficult to processing unfavorable factor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
In figure: 1. furnace wall, 2. burner hearth, 3. probe tube, 4. refractory part, 5. analyser probe, 6. probe test side, 7. inspection
Survey air chamber, 8. suspended body flowmeter, the shortest neck nozzle, 10. pressure regulator valve, 11. air compressed pipes.
Detailed description of the invention
With detailed description of the invention, this utility model is described in detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, the vacuum withdraw device of a kind of short neck nozzle of this utility model, this device includes probe tube 3, sampling
Pipe 3 is wrapped in refractory part 4, and refractory part 4 is located in furnace wall 1；Described probe tube 3 one end is exposed furnace wall 1 end face and is stretched to
In burner hearth 2, probe tube 3 other end is connected with detection air chamber 7 one end, and detection air chamber 7 is provided with analyser probe 5, and analyser is visited
The probe test side 6 of 5 extends to detect in the middle part of air chamber 7, and detection air chamber 7 other end is become with by rustless steel or copper by pipeline
Short neck nozzle 9 threaded one end connect, short neck nozzle 9 other end is threaded is the free air pressure draw 11, on air compressed pipe 11
It is provided with suspended body flowmeter 8 and pressure regulator valve 10.
This utility model is when specifically used, before gas composition analysis instrument measures, first has to according to as shown in Figure 1
Structure carry out pipe arrangement connection, the two ends of short neck nozzle 9 are all the pipelines of a diameter of 12mm internal diameter, and pipeline all uses screw thread even
Connecing, short neck nozzle 9 one end connects air compressed pipe 11, is serially connected with Pressure gauge (range a: 0-in the pipeline of air compressed pipe 11
0.5MPa, adjusting range is typically at 0.08-0.12MPa), a suspended body flowmeter 8(range 0-8000ml/h, usual amounts 3500-
5000 ml/h), adjust sample gas flow in stove for comparison, short neck nozzle 9 empties end and directly discharges air.
Under compressed-air actuated effect, the furnace gas in burner hearth 2 be drawn out of after through over sampling pipe 3 enter into detection air chamber 7 in,
Carry out component measurement through being located at the probe test side 6 of the analyser in detection air chamber 7, regulate compressed air by pressure regulator valve 10
Pressure, the big I Indirect method of flow detect the flow of gas, and compressed air pressure is the biggest, and in stove, the flow of detection gas is also got over
Greatly, it is achieved that analyser is by the extraction to furnace gas of the vacuum drawn of short neck nozzle 9, analytical and detecting work.
Claims (2)
1. the vacuum withdraw device of one kind short neck nozzle, it is characterised in that: this device includes probe tube (3), and probe tube (3) wraps up
In refractory part (4), refractory part (4) is located in furnace wall (1)；Described probe tube (3) one end is exposed furnace wall (1) end face and is stretched into
To burner hearth (2), probe tube (3) other end is connected with detection air chamber (7) one end, and detection air chamber (7) is provided with analyser probe
(5), the probe test side (6) of analyser probe (5) extends to detect air chamber (7) middle part, and detection air chamber (7) other end is by pipe
Road is connected with short neck nozzle (9) threaded one end, and short neck nozzle (9) other end is threaded the free air pressure draw (11), air pressure
The draw (11) is provided with suspended body flowmeter (8) and pressure regulator valve (10).
The vacuum withdraw device of a kind of short neck nozzle the most as claimed in claim 1, it is characterised in that: described short neck nozzle
(9) become by rustless steel or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606469.4U CN205808782U (en) | 2016-06-20 | 2016-06-20 | A kind of vacuum withdraw device of short neck nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606469.4U CN205808782U (en) | 2016-06-20 | 2016-06-20 | A kind of vacuum withdraw device of short neck nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205808782U true CN205808782U (en) | 2016-12-14 |
Family
ID=58142085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620606469.4U Expired - Fee Related CN205808782U (en) | 2016-06-20 | 2016-06-20 | A kind of vacuum withdraw device of short neck nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205808782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769267A (en) * | 2016-12-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Probe tube and gas detecting instrument |
-
2016
- 2016-06-20 CN CN201620606469.4U patent/CN205808782U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769267A (en) * | 2016-12-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Probe tube and gas detecting instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20170620 |