CN207741983U - A kind of anti-blocking sampler of power plant stack gas system pressure - Google Patents
A kind of anti-blocking sampler of power plant stack gas system pressure Download PDFInfo
- Publication number
- CN207741983U CN207741983U CN201820042736.9U CN201820042736U CN207741983U CN 207741983 U CN207741983 U CN 207741983U CN 201820042736 U CN201820042736 U CN 201820042736U CN 207741983 U CN207741983 U CN 207741983U
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- China
- Prior art keywords
- blocking
- gas system
- sampler
- probe tube
- power plant
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Abstract
The utility model discloses a kind of anti-blocking samplers of power plant stack gas system pressure, including flue gas system pressure measurement hole, and the hollow probe tube being connected to flue gas system pick-up hole, and the anti-blocking sampling jar being connect with hollow probe tube and anti-blocking cyclone, hollow probe tube is welded with flue gas system pressure measurement hole, anti-blocking sampling jar is cylindric hollow structure, top and bottom trepanning, lower end and hollow probe tube weld together, upper end and sample gas export pipeline weld together, anti-blocking cyclone is installed inside anti-blocking sampling jar, it it is one into spiralling stainless steel arc plate, the anti-blocking sampler of pressure transmits measured medium pressure by hollow sample gas export pipeline, blowback is carried out to anti-blocking sampler by blowback gas source pipe road, ensure that sampler gas circuit is unimpeded.
Description
Technical field
The utility model is related to power plant stack gas system pressure fields of measurement, disclose a kind of power plant stack gas system pressure
Anti-blocking sampler realizes the choke preventing function of power plant stack gas system pressure sampling.
Background technology
The accurate measurement of power plant stack gas system pressure is to ensureing that power plant stack gas system safe and stable operation is most important.
Common power plant stack gas system pressure measured value has：Boiler furnace pressure, air preheater inlet/outlet differential pressure, denitrating catalyst interlayer
Differential pressure, electric precipitation inlet/outlet pressure, air-introduced machine outlet pressure etc..However, the measurement of power plant stack gas system pressure is in practical fortune
Occur sampling line blockage problem in row, cause stress that measured deviation is big, the requirement of system safe and stable operation cannot be met.
Contain a large amount of dust in flue gas in power plant stack gas system, also contains carbon monoxide, sulfur dioxide and nitrogen oxidation
The gases such as object.In flue gas system operation, a large amount of dust is easy retaining pressure sampling line.The gas such as sulfur dioxide and nitrogen oxides
It is easy to form firm solid chemical compound with the dust in flue gas when the low temperature of body, is further exacerbated by the stifled of pressure samples pipeline
Plug.Meanwhile when low temperature sulfur dioxide and nitrogen oxides can in flue gas oxygen and aquatic products is biochemical reacts, form sulfuric acid, Asia
The acidic materials such as sulfuric acid and nitric acid or nitrous acid, corrode the pressure sampling apparatus of metal material, lead to pressure sampling apparatus
Breakage generates failure so as to cause pressure-measuring system.
After pressure sampling apparatus blocks, it is necessary to sampler is periodically opened by maintenance personnel to be checked and clear up,
The workload of plant maintenance personnel is larger.And the blocking of sampler will cause flue gas system pressure measurement and protection system to be lost
Spirit seriously threatens the safe and stable operation of flue gas system.
Invention content
The purpose of this utility model is to provide a kind of anti-blocking sampler of power plant stack gas system pressure, realizes power plant cigarette
The anti-blocking sampled functions of gas system pressure.
The technical solution of the utility model is a kind of anti-blocking sampler of power plant stack gas system pressure, it is characterized in that：Packet
Flue gas system pressure measurement hole is included, and the hollow probe tube being connected to flue gas system pick-up hole, and is taken with hollow
The anti-blocking sampling jar and anti-blocking cyclone, hollow probe tube of sample pipe connection are welded with flue gas system pressure measurement hole, are prevented
Sampling jar is blocked up as cylindric hollow structure, top and bottom trepanning, lower end and hollow probe tube weld together, upper end and sample gas
Export pipeline welds together, and anti-blocking cyclone is equipped with inside anti-blocking sampling jar, is one and justifies at spiralling stainless steel
Arc plate, the anti-blocking sampler of pressure transmit measured medium pressure by hollow sample gas export pipeline, pass through blowback gas source pipe road pair
Anti-blocking sampler carries out blowback, ensures that sampler gas circuit is unimpeded.
Preferably, to ensure that the dust in flue gas can flow back into flue gas system container, hollow probe tube tilts installation, inclines
Rake angle is 40 ° to 60 ° on horizontal alignment, and hollow probe tube end set has the plug of threaded connection.
Preferably, it is tied with electric-heating belt outside hollow probe tube and anti-blocking sampling jar, ensures that flue-gas temperature is not less than 80
Degree Celsius, have heat-preservation cotton and aluminium skin outside electric-heating belt, is further ensured that the temperature of anti-blocking sampling jar is stablized.
Preferably, anti-blocking sampling jar must right angle setting.
Preferably, blowback gas source pipe way outlet terminates power plant compressed air for instrument, and the external pressure of sample gas export pipeline becomes
Device is sent, realizes the transmission of measured medium pressure, blowback gas source pipe road and sample gas export pipeline are equipped with solenoid valve.
It is provided with anti-blocking sampler electric tracing and heat-preserving equipment in the present invention, it is ensured that the anti-blocking sampler of pressure
Do not corroded by low-temperature flue gas, prevents the chemical substance in flue gas from fouling occurs in low temperature, to block sampling line.In this reality
With novel middle setting Pneumatic power back-blowing equipment, it is ensured that sampling line is unimpeded.
Description of the drawings
Fig. 1 is the system structure diagram of the utility model.
Specific implementation mode
The utility model is described in detail below in conjunction with attached drawing, the description of this part is only exemplary and explains
Property, it is not construed as the limitation to the utility model public technology content.
The anti-blocking sampler of pressure is by hollow probe tube 2, anti-blocking sampling jar 3, anti-blocking cyclone 4,5 and of blowback gas source pipe road
Sample gas export pipeline 6 forms.The anti-blocking sampler of pressure is mounted on 1 outer wall of pressure measurement hole that flue gas system has held hole successfully
On.First in tested flue gas system pipeline or cabinet exterior trepanning, the hollow probe tube of the anti-blocking sampler of pressure is welded on institute
At hole-opening.Hollow probe tube 2 welds together with 3 metal outer wall of anti-blocking sampling jar.Anti-blocking cyclone built in anti-blocking sampling jar 3
4, prevent the dust in flue gas from blocking anti-blocking sampling jar 3.The regular blowing function of anti-blocking sampler is realized on blowback gas source pipe road 5,
The break-make of blowback air source is by solenoid valve control.6 external pressure transmitter of sample gas export pipeline realizes the biography of measured medium pressure
It passs.
In Fig. 1, it is tested flue gas system pressure measurement hole 1, effect is the anti-blocking sampler of fixation pressure.Simultaneously will
Flue gas system pressure is transmitted to the hollow probe tube of anti-blocking sampler.Hollow probe tube 2, effect are connection flue gas system pressure
Measured hole and anti-blocking sampling jar.Anti-blocking sampling jar 3, effect is to transmit flue gas pressures to sample gas export pipeline.It is anti-blocking
Cyclone 4, effect are the dust reduced in flue gas, prevent dust from blocking sample gas export pipeline.Blowback gas source pipe road 5 is made
With being the anti-blocking sampler of purging.Sample gas export pipeline 6, effect is that flue gas pressures are passed to pressure transmitter.
Based on being susceptible to sampler inner wall existing for power plant stack gas system pressure sampler in the prior art
The problem of dirty and hollow sampling blockage, the utility model provide it is a kind of can solve above-mentioned technical problem be used for power plant
The anti-blocking sampler of pressure of flue gas system is described in detail the pressure sampler hereinafter with reference to attached drawing.
Hollow probe tube 2, caliber DN25, wall thickness are 2.5 millimeters.Material is 316L stainless steels.Hollow probe tube 2 and cigarette
Gas system pressure measures hole 1 and is welded.To ensure that the dust in flue gas can flow back into flue gas system container, hollow sampling
Pipe 2 tilts installation, and angle of inclination is 40 ° to 60 ° on horizontal alignment.Electric-heating belt 7 is tied with outside hollow probe tube 2, it is therefore an objective to
Ensure that flue-gas temperature is not less than 80 degrees Celsius, prevents the gases such as sulfur dioxide and the nitrogen oxides in flue gas in low temperature and flue gas
In dust form firm solid chemical compound, retaining pressure sampling line.Meanwhile sulfur dioxide and nitrogen oxidation when preventing low temperature
Object in flue gas oxygen and aquatic products is biochemical reacts, form sulfuric acid, sulfurous acid and the acidic materials such as nitric acid or nitrous acid,
Corrode metal material pressure sampling apparatus.Have heat-preservation cotton and aluminium skin outside electric-heating belt, is further ensured that hollow probe tube
Temperature stablize.
2 end set of hollow probe tube has the plug of threaded connection, maintenance personnel that can dismantle this plug, and observation is hollow
Probe tube stopping state, when a jam does occur, maintenance personnel can be removed by long iron bar and block substance.
Anti-blocking sampling jar 3 and anti-blocking cyclone 4, effect is to transmit flue gas pressures to sample gas export pipeline.Drop
Dust in low flue gas prevents dust from blocking sampling line.Anti-blocking sampling jar 3 must right angle setting.Anti-blocking sampling jar is cylinder
Shape structure, top and bottom trepanning, lower end and hollow probe tube weld together.Upper end and sample gas export pipeline are welded on one
It rises.Anti-blocking cyclone 4 is installed inside anti-blocking sampling jar 3.Anti-blocking sampling jar material is 316L stainless steels, hollow, internal diameter 100
Millimeter, wall thickness are 2.5 millimeters.Anti-blocking cyclone 4 is installed in anti-blocking sampling jar, and material is 304 stainless steels.Anti-blocking cyclone is
One at spiralling stainless steel arc plate, flue gas in anti-blocking sampling jar along anti-blocking cyclone rotate rise, dust
Grain hits anti-blocking cyclone metal surface, and big dust particles are back to cigarette since gravity declines along hollow probe tube
In gas system container.
Blowback gas source pipe road 5 and sample gas export pipeline 6, effect is that flue gas pressures are passed to pressure transmitter, is realized
Anti-blocking sampler reverse blow function.5 outlet end sending and receiving power plant compressed air for instrument of blowback gas source pipe road, it is desirable that air source quality
Index is：
(1) solid particle is not more than 1.5mg/m3, and dust-laden particle diameter is not more than 5 μm.
(2) water vapour content is not more than 0.1g/m3, and oil content is not more than 1mg/m3.
(3) dew point should be less than local minimum 10 DEG C of environment temperature.
Blowback bleed pressure should be able to control within the scope of 0.3MPa~0.8MPa
Anti-blocking sampler export pipeline 6 by blowback gas source pipe road 5 and sample gas and the solenoid valve installed on pipeline
Realize blowing function.
Blowing function is described as follows：Blowback gas source pipe road 5 and sample gas export pipeline 6 are equipped with solenoid valve, are normally sampling
When, blowback gas source pipe way solenoid valve is closed, and sample gas export pipeline solenoid valve is opened, and realizes the transmission of measured medium pressure.Anti-
When blowing, blowback gas source pipe way solenoid valve is opened, and sample gas export pipeline solenoid valve is closed, and realizes the blowback work(of pressure sampling apparatus
Energy.Blowing function can be automatically controlled by power plant automatic control system, it can be achieved that automatically and manually two kinds of functions.When blowback work(
Can be in automated manner, every two days of control system starts a blowing function, and when blowback is first shut off sample gas export pipeline electromagnetism
Valve, then opens blowback gas source pipe way solenoid valve, and blowback duration of ventilation is 60 seconds.After time, it is first shut off blowback air source
Then pipeline electromagnetic valve opens sample gas export pipeline solenoid valve, anti-blocking sampler normal operation.
When blowing function is in manual mode, maintenance personnel can manually boot blowback program, purge and automatic side
Formula is identical.
The installation of anti-blocking sampler and welding procedure are extremely important, and welding uses full argon arc welding, weld seam seal good
It is good.
Claims (5)
1. a kind of anti-blocking sampler of power plant stack gas system pressure, it is characterised in that：Including flue gas system pressure measurement hole
(1), the hollow probe tube (2) and with flue gas system pick-up hole being connected to, and connect with hollow probe tube (2) anti-blocking
Sampling jar (3) and anti-blocking cyclone (4), hollow probe tube (2) is welded with flue gas system pressure measurement hole (1), anti-blocking
Sampling jar (3) is cylindric hollow structure, top and bottom trepanning, and lower end and hollow probe tube (2) weld together, upper end and
Sample gas export pipeline (6) welds together, and anti-blocking cyclone (4) is equipped with inside anti-blocking sampling jar (3), is one in spiral
The stainless steel arc plate risen, the anti-blocking sampler of pressure transmit measured medium pressure by hollow sample gas export pipeline (6), pass through
Blowback gas source pipe road (5) carries out blowback to anti-blocking sampler, ensures that sampler gas circuit is unimpeded.
2. the anti-blocking sampler of power plant stack gas system pressure as described in claim 1, it is characterised in that：To ensure in flue gas
Dust can flow back into flue gas system container, hollow probe tube (2) tilts installation, and angle of inclination is that 40 ° extremely on horizontal alignment
60 °, hollow probe tube (2) end set has the plug of threaded connection.
3. the anti-blocking sampler of power plant stack gas system pressure as described in claim 1, it is characterised in that：Hollow probe tube
(2) and outside anti-blocking sampling jar (3) it is tied with electric-heating belt (7), ensures that flue-gas temperature is not less than 80 degrees Celsius, in electric-heating belt
Outside has heat-preservation cotton and aluminium skin, is further ensured that the temperature of anti-blocking sampling jar is stablized.
4. the anti-blocking sampler of power plant stack gas system pressure as described in claim 1, it is characterised in that：Anti-blocking sampling jar
It (3) must right angle setting.
5. the anti-blocking sampler of power plant stack gas system pressure as described in claim 1, it is characterised in that：Blowback gas source pipe road
(5) outlet end sending and receiving power plant compressed air for instrument, sample gas export pipeline (6) external pressure transmitter realize measured medium pressure
Transmission, blowback gas source pipe road (5) and sample gas export pipeline (6) are equipped with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820042736.9U CN207741983U (en) | 2018-01-10 | 2018-01-10 | A kind of anti-blocking sampler of power plant stack gas system pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820042736.9U CN207741983U (en) | 2018-01-10 | 2018-01-10 | A kind of anti-blocking sampler of power plant stack gas system pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207741983U true CN207741983U (en) | 2018-08-17 |
Family
ID=63122796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820042736.9U Expired - Fee Related CN207741983U (en) | 2018-01-10 | 2018-01-10 | A kind of anti-blocking sampler of power plant stack gas system pressure |
Country Status (1)
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| CN (1) | CN207741983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274797A (en) * | 2019-06-28 | 2019-09-24 | 南京康测自动化设备有限公司 | One kind removing liquid water sampling apparatus |
| CN114087878A (en) * | 2021-11-19 | 2022-02-25 | 曹文博 | High-temperature pyrolysis furnace and pyrolysis system |
-
2018
- 2018-01-10 CN CN201820042736.9U patent/CN207741983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274797A (en) * | 2019-06-28 | 2019-09-24 | 南京康测自动化设备有限公司 | One kind removing liquid water sampling apparatus |
| CN114087878A (en) * | 2021-11-19 | 2022-02-25 | 曹文博 | High-temperature pyrolysis furnace and pyrolysis system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180817 Termination date: 20190110 |