CN204649662U - A kind of acid dew point instrument detection probe dust prevention system - Google Patents
A kind of acid dew point instrument detection probe dust prevention system Download PDFInfo
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- CN204649662U CN204649662U CN201520329658.7U CN201520329658U CN204649662U CN 204649662 U CN204649662 U CN 204649662U CN 201520329658 U CN201520329658 U CN 201520329658U CN 204649662 U CN204649662 U CN 204649662U
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- sleeve pipe
- dew point
- acid dew
- filter core
- aspiration pump
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Abstract
A kind of acid dew point instrument detection probe dust prevention system, this dust prevention system comprises filter core, the first coupling arrangement, sleeve pipe, gasket seal, the second coupling arrangement, sleeve pipe cover plate, aspiration pump connector, connecting pipe, gas circuit controller, pressurized air connector, gas circuit variable valve, pressure vacuum gauge, connecting pipe and aspiration pump; Open aspiration pump to start to bleed, flue gas enters dust guard inside by filter core; Filter core aperture is 1-10 micron, effectively can filter ash-laden gas, being intercepted by flue dust in filter core outside thus clean flue gas is passed through and arrives at acid dew point instrument probe surface, can carry out blowback ash disposal by regulating gas circuit variable valve to filter core.This dust prevention system does not need numerous and diverse flue gas tracing thermal-insulating device, has that system is simple, compact conformation, an easy accessibility and be beneficial to the feature of carrying; In addition this dust prevention system is not limited to acid dew point instrument probe, also can be widely used in the dust-proof process of similar detecting instrument probe.
Description
Technical field
The utility model belongs to flue gas inspection technical field, is specifically related to a kind of acid dew point instrument detection probe dust prevention system.
Background technology
When boiler uses the fuel of sulfur-bearing, the SO formed after burning
2some can be oxidized to SO further
3, and the water vapour in flue gas is combined formation sulfuric acid vapor.The adiabatic condensation temperature of sulfureous in flue gas acid vapor is called acid dew point, and it is higher than water dew point a lot.Flue gas SO
3the more, acid dew point is just higher, and the acid dew point in flue gas can reach 140 ~ 160 DEG C, even higher for (in other words sulfuric acid vapor) content.The sulfuric acid vapor of these gaseous states can condense lower than during acid dew-point temperature in temperature, and as formed sulfuric acid solution in surface condensations such as the low temperature heating surface of boiler and flues, sulfuric acid solution and metal reaction cause metal erosion, title cold end corrosion.The safe operation harmfulness of cold end corrosion to boiler is very big.In order to effectively prevent the generation of cold end corrosion, the acid dew-point temperature of flue gas must be measured accurately.
The measuring method of existing commercially available acid dew point instrument and Cleaning Principle are commonly stainless steel probe top being equipped with conductance minute surface sensor and insert in flue, when conductance minute surface sensor be heated to identical with flue-gas temperature after, starting to supply cooled compressed air makes sensor sheet surface temperature decline, thus makes minute surface sensor forms sulfate membrane.Conductance minute surface sensor surface has two electrodes, and the formation due to condensation sorrel makes have electric current to flow through between two electrodes, and strength of current is simultaneously out measured.When strength of current is stablized, sensor temperature is now acid dew-point temperature.
Through repeatedly on-the-spot actual measurement discovery, the sensor of this type of acid dew point instrument is very responsive to dust contained flue gas concentration.When using such acid dew point instrument to carry out ash-laden gas measurement, after probe inserts flue, flue dust can be adsorbed on the surface of minute surface sensor, flue dust can cause the surface of sensor to form sorrel when forming certain thickness, makes do not have electric current to flow through between sensor two electrode, cannot detect acid dew-point temperature.Especially when measuring coal-fired plant flue gas, even if in electric dust collector exit, in flue gas, dust is also normally measured it and is produced extreme influence, and in dust catcher device porch, this instrument cannot work completely.In brief, existing commercially available acid dew point instrument is not suitable for the more flue gas acid dew point of measurement dust-laden.
Summary of the invention
In order to solve above-mentioned technical barrier, the purpose of this utility model is to provide a kind of acid dew point instrument detection probe dust prevention system, expand the scope of application of existing commercially available acid dew point instrument, the acid dew point that can carry out ash-laden gas detects, and especially the acid dew point of coal-burning power plant's ash-laden gas detects.
To achieve these goals, the utility model is by the following technical solutions:
A kind of acid dew point instrument detection probe dust prevention system, comprise filter core 1, by the sleeve pipe 3 that the first coupling arrangement 2 is connected with filter core 1, gasket seal 4 is placed with between described sleeve pipe 3 and sleeve pipe cover plate 6, by the second coupling arrangement 5, sleeve pipe 3 is connected with sleeve pipe cover plate 6, acid dew point instrument detection probe is inserted in sleeve pipe 3 by the center pit of sleeve pipe cover plate 6, described sleeve pipe cover plate 6 is furnished with multiple aspiration pump connector 7 symmetrically, described aspiration pump connector 7 is connected with gas circuit controller 9 by the first connecting pipe 8, described gas circuit controller 9 is connected with aspiration pump 14 by the second connecting pipe 13, described gas circuit controller 9 is provided with pressurized air connector 10, gas circuit variable valve 11 and pressure vacuum gauge 12.
Described filter core 1 uses titanium alloy or stupalith; First coupling arrangement 2, sleeve pipe 3, second coupling arrangement 5, sleeve pipe cover plate 6 and aspiration pump connector 7 use 316L stainless steel material; Gasket seal 4 uses polytetrafluoroethylene sealing gasket; First connecting pipe 8 and the second connecting pipe 13 use silicone tube; Aspiration pump 14 uses anticorrosion aspiration pump.
The aperture of described filter core 1 is 1-10 micron.
The utility model possesses following advantage:
1, a kind of acid dew point instrument of the utility model detection probe dust prevention system has widened the applicable working condition of acid dew point instrument greatly, can detect the acid dew point of ash-laden gas, and the acid dew point being particularly useful for coal-burning power plant's ash-laden gas detects.
2, the dust cover in a kind of acid dew point instrument of the utility model detection probe dust prevention system inserts in flue together with acid dew point instrument probe, the dust removal by filtration of ash-laden gas is achieved in flue inside, compared with the outside flue gas sampling dust arrester of other general flue, do not need numerous and diverse flue gas tracing thermal-insulating system.Therefore, the utility model/utility model have that system is simple, compact conformation, easy accessibility and be beneficial to the feature of carrying.
3, a kind of acid dew point instrument of the utility model detection probe dust prevention system is furnished with aspiration pump, strengthens filter core inside and outside pressure differential, thus increases flue gas circulation.
4, a kind of acid dew point instrument of the utility model detection probe dust prevention system is with blowback gas circuit, can regularly remove cartridge surface dust stratification, avoids filter core outside surface dust stratification blocked up and cause flue gas to circulate not smooth problem.
5, a kind of acid dew point instrument of the utility model detection probe dust prevention system, is not limited to the dust-proof of acid dew point instrument detection probe, also can dust-proof in other similar detecting instrument probe of flexible Application.
Accompanying drawing explanation
Accompanying drawing is the utility model system schematic.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in drawings, a kind of acid dew point instrument of the utility model detection probe dust prevention system, comprise filter core 1, by the sleeve pipe 3 that the first coupling arrangement 2 is connected with filter core 1, gasket seal 4 is placed with between described sleeve pipe 3 and sleeve pipe cover plate 6, by the second coupling arrangement 5, sleeve pipe 3 is connected with sleeve pipe cover plate 6, acid dew point instrument detection probe is inserted in sleeve pipe 3 by the center pit of sleeve pipe cover plate 6, described sleeve pipe cover plate 6 is furnished with multiple aspiration pump connector 7 symmetrically, described aspiration pump connector 7 is connected with gas circuit controller 9 by the first connecting pipe 8, described gas circuit controller 9 is connected with aspiration pump 14 by the second connecting pipe 13, described gas circuit controller 9 is provided with pressurized air connector 10, gas circuit variable valve 11 and pressure vacuum gauge 12.
As preferred implementation of the present utility model, each parts of acid dew point instrument detection probe dust prevention system use anticorrosion temperature-resistant material; Described filter core 1 uses titanium alloy or stupalith; First coupling arrangement 2, sleeve pipe 3, second coupling arrangement 5, sleeve pipe cover plate 6 and aspiration pump connector 7 use 316L stainless steel material; Gasket seal 4 uses polytetrafluoroethylene sealing gasket; First connecting pipe 8 and the second connecting pipe 13 use silicone tube; Aspiration pump 14 uses anticorrosion aspiration pump.
As preferred implementation of the present utility model, the aperture of described filter core 1 is 1-10 micron.
The dust-control method of acid dew point instrument detection probe dust prevention system described above, comprises the steps:
Step 1: acid dew point instrument detection probe is penetrated by sleeve pipe cover plate 6 center pit, the gap between center pit and acid dew point instrument detection probe is by seal with elastometic washer;
Step 2: be placed in by gasket seal 4 on sleeve pipe cover plate 6, is then enclosed within sleeve pipe 3 in acid dew point instrument detection probe, and uses the second coupling arrangement 5 sleeve pipe cover plate 6, gasket seal 4 to be fixedly connected with sleeve pipe 3;
Step 3: other end filter core 1 being positioned over sleeve pipe 3, and be fixedly connected with filter core 1 and sleeve pipe 3 by the first coupling arrangement 2, composition dust guard;
Step 4: dust guard is inserted in ash-laden gas;
Step 5:, by the first connecting pipe 8, aspiration pump connector 7 is connected with gas circuit controller 9;
Step 6: gas circuit controller 9 is connected with aspiration pump 14 by the second connecting pipe 13, described gas circuit controller 9 connects pressurized air by compressed air joint 10;
Step 7: the gas circuit variable valve 11 on gas circuit controller 9 is threaded to " bleeding " shelves, now the second connecting pipe 13 is communicated with aspiration pump 14, and pressurized air gas circuit is closed; Open aspiration pump 14 to start to bleed, flue gas enters dust guard inside by filter core 1, and contacts with acid dew point instrument detection probe; Filter core aperture is 1-10 micron, effectively can filter dust in flue gas, is intercepted by flue dust in filter core outside thus clean flue gas is passed through and arrives at acid dew point instrument detection probe surface;
Step 8: after certain hour of bleeding, after the negative pressure registration of the pressure vacuum gauge 12 on gas circuit controller 9 reaches certain value, illustrates that filter core 1 outside surface dust stratification is more; Close aspiration pump 14, gas circuit variable valve 11 is threaded to " blowback " shelves, now the first connecting pipe 8 and pressurized air UNICOM, and gas circuit of bleeding is closed; The compressed air connector 10 of pressurized air enters gas circuit controller 9, and is flowed in dust guard by the first connecting pipe 8, thus carries out blowback to filter core 1, removes the dust stratification of its outside surface;
Step 9: after blowback certain hour, after the malleation registration of pressure vacuum gauge 12 reaches certain value, illustrates that the blowback of filter core 1 outside surface dust stratification is clean; Step 7-9 can be repeated and continue normal work.
Finally it should be noted that, the above embodiment is only used for the technical solution of the utility model and unrestricted is described, those skilled in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. an acid dew point instrument detection probe dust prevention system, it is characterized in that: comprise filter core (1), by the sleeve pipe (3) that the first coupling arrangement (2) is connected with filter core (1), gasket seal (4) is placed with between described sleeve pipe (3) and sleeve pipe cover plate (6), by the second coupling arrangement (5), sleeve pipe (3) is connected with sleeve pipe cover plate (6), acid dew point instrument detection probe is inserted in sleeve pipe (3) by the center pit of sleeve pipe cover plate (6), described sleeve pipe cover plate (6) is furnished with multiple aspiration pump connector (7) symmetrically, described aspiration pump connector (7) is connected with gas circuit controller (9) by the first connecting pipe (8), described gas circuit controller (9) is connected with aspiration pump (14) by the second connecting pipe (13), described gas circuit controller (9) is provided with pressurized air connector (10), gas circuit variable valve (11) and pressure vacuum gauge (12).
2. a kind of acid dew point instrument detection probe dust prevention system according to claim 1, is characterized in that: described filter core (1) uses titanium alloy or stupalith; First coupling arrangement (2), sleeve pipe (3), the second coupling arrangement (5), sleeve pipe cover plate (6) and aspiration pump connector (7) use 316L stainless steel material; Gasket seal (4) uses polytetrafluoroethylene sealing gasket; First connecting pipe (8) and the second connecting pipe (13) use silicone tube; Aspiration pump (14) uses anticorrosion aspiration pump.
3. a kind of acid dew point instrument detection probe dust prevention system according to claim 1, is characterized in that: the aperture of described filter core (1) is 1-10 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329658.7U CN204649662U (en) | 2015-05-20 | 2015-05-20 | A kind of acid dew point instrument detection probe dust prevention system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329658.7U CN204649662U (en) | 2015-05-20 | 2015-05-20 | A kind of acid dew point instrument detection probe dust prevention system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204649662U true CN204649662U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520329658.7U Expired - Fee Related CN204649662U (en) | 2015-05-20 | 2015-05-20 | A kind of acid dew point instrument detection probe dust prevention system |
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| CN (1) | CN204649662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849314A (en) * | 2015-05-20 | 2015-08-19 | 西安热工研究院有限公司 | Dustproof system and method for detection probe of acid dew point instrument |
| CN110044666A (en) * | 2019-05-28 | 2019-07-23 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-temperature high dust flue gas sampling system and method |
-
2015
- 2015-05-20 CN CN201520329658.7U patent/CN204649662U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849314A (en) * | 2015-05-20 | 2015-08-19 | 西安热工研究院有限公司 | Dustproof system and method for detection probe of acid dew point instrument |
| CN110044666A (en) * | 2019-05-28 | 2019-07-23 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-temperature high dust flue gas sampling system and method |
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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 |
Granted publication date: 20150916 Termination date: 20170520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |