CN205157383U - Minimum discharge cigarette dust content of thermal power plant test system - Google Patents
Minimum discharge cigarette dust content of thermal power plant test system Download PDFInfo
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- CN205157383U CN205157383U CN201520883398.8U CN201520883398U CN205157383U CN 205157383 U CN205157383 U CN 205157383U CN 201520883398 U CN201520883398 U CN 201520883398U CN 205157383 U CN205157383 U CN 205157383U
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- drying device
- pitot tube
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Abstract
The utility model relates to a minimum discharge cigarette dust content of thermal power plant test system, this system by L type sampling mouth, tertiary filter membrane filter equipment, sampling rifle, pitot tube, prevent that suck -back device, pressure angle sensor, flue gas temperature sensor, oxygen sensor, one -level caCl2 drying device, second grade silica gel drying device, gas flowmeter, frequency conversion sampling pump and the equipment of host computer automatic control device constitute, the utility model provides an internal each the big coal firing machine of electric power group " minimum discharge " reform transform the difficult problem that the back lacks low concentration smoke and dust test means, have simple structure reasonable, can measure the low concentration cigarette dust content under high wet, the high corrosivity condition accurately, will administer PM2.5 to china and provide accurate, effectual technical support, for thermoelectricity enterprise dust pelletizing system, desulfurization system's optimal operation provides true, accurate data, provide the service of demarcation for smoke and dust on -line monitoring equipment.
Description
Technical field
The utility model relates to and belongs to atmosphere pollution minimum discharge technical field of measurement and test, relates to a kind of thermal power plant minimum discharge dust concentration test macro specifically.
Background technology
In September, 2014, three ministries and commissions combine and have printed and distributed " coal electricity energy-saving and emission-reduction upgrading and transformation action plan (2014-the year two thousand twenty) ", wherein specify that newly-built Thermal generation unit Air Pollutant Emission concentration reaches gas turbine group emission limit substantially (namely under benchmark oxygen content 6% condition, flue dust, sulphuric dioxide, discharged nitrous oxides concentration is not respectively higher than 10, 35, 50 milligrams/cubic metre), domestic each large Power Group is in the face of increasingly serious environmental problem, advance " Coal Clean efficiency utilization " with all strength, by the environmental emission reduction technology that the system integration is advanced both at home and abroad, promote coal unit " minimum discharge " developing goal, require that dust concentration is not more than 5mg/Nm
3, in view of traditional filter cylinder method has not been suitable for low concentration (5mg/Nm under the new situation
3) emission measurement requirement, now need badly and be a kind ofly applicable to high humility, the high precision Technology of Smoke-dust of highly corrosive flue gas carries out Performance Assessment to the improved environmental protection equipment of minimum discharge, provide accurate and effective technical support for China administers PM2.5.
Summary of the invention
The purpose of this utility model is to provide an a kind of difficult problem for lacking low concentration tobacco damping-off means after domestic each large Power Group coal unit " minimum discharge " transformation, there is provided a kind of thermal power plant minimum discharge dust concentration test macro, this system architecture advantages of simple, the low concentration dust concentration can accurately measured under high humidity, highly corrosive condition.
The purpose of this utility model is achieved in that this system comprises L-type sampling mouth, three grades of membrane filtration devices, sampling gun, pitot tube, suck-back device, pressure angle sensor, flue-gas temperature sensor, lambda sensor, one-level CaCl
2drying device, secondary silica gel drying device, gas meter, frequency-change sampling pump and main frame automaton, described L-type sampling mouth is connected with three grades of membrane filtration devices, sampling gun is connected with three grades of membrane filtration devices, pitot tube and sampling gun are fixed together, and pitot tube and sampling gun keeping parallelism, the head of pitot tube is positioned at the top of L-type sampling mouth, spacing is 5mm, the afterbody of pitot tube is connected with main frame automaton by sebific duct, described suck-back device is positioned at the front end of sampling gun, described pressure angle sensor, flue-gas temperature sensor and lambda sensor are fixed on the inside of sampling gun successively, described pressure angle sensor, flue-gas temperature sensor and lambda sensor are all connected with main frame automaton by data cable, described one-level CaCl
2drying device is connected with sampling gun by flexible pipe, and secondary silica gel drying device is by sebific duct and one-level CaCl
2drying device is connected, and described gas meter entrance is connected by flexible pipe with secondary silica gel drying device, and gas meter outlet is connected by flexible pipe with frequency-change sampling pump, and described frequency-change sampling pump is connected with main frame automaton by transmission cable.
The beneficial effect that the utility model has the following advantages:
1, the utility model is by L-type sampling head, three grades of membrane filtration device entirety are placed in flue inside and measure, the method and sampling spot position employing grid type is layouted, achieve isokinetic sampling, avoid high humidity, high corrosion flue gas is on the impact of measuring accuracy, classification can be carried out to dust size while accurately measuring dust concentration, the synchronous Flow Field Distribution realizing test flue cross section, thermo parameters method, flue gas enters secondary drying device and becomes dry flue gas after three grades of membrane filtration devices, dry flue gas is through dry gas meter, directly obtain the sampling volume of the dry air under room temperature, mark condition 6%O directly can be shown in control panel
2under smoke dust discharge concentration.
2, in the utility model, described L-type sampling mouth, three grades of membrane filtration devices, suck-back device and pressure angle sensors form sampling head main body, sampling head entire body is positioned over flue inside and measures, and employing grid type is layouted, the method for isokinetic sampling is sampled.
3, in the utility model, the adjustment that pitot tube is installed in position, pressure angle sensor can the be real-time sampling mouth of described sampling mouth and the angle of airflow direction, ensure that the direction of sampling mouth is all the time just to airflow direction, realizes being all isokinetic sampling in whole sampling process.
Install the device of an anti-suck in described sampling mouth position, can control the switch of suck-back device during measurement, avoid before and after sampling, in flue, negative pressure makes the dust collecting filter membrane reenter flue.
4, in the utility model, described filtration unit adopts three grades of membrane filtration device (filter membrane=47mm, heavy 100mg) carry out size grading, filter membrane adopts different factor of porosity, the bulky grain thing of single filter PM10, the small particles thing of cascade filtration PM5, the fine particle of three-stage filtration PM2.5.
5, in the utility model, described flue gas drying device serial connection two-stage impact type drying bottle, one-level is equipped with CaCl
2, one-level is equipped with silica gel and carries out two-stage drying to flue gas, ensure that flue gas becomes dry flue gas completely, ensure the accurate-metering of sampling volume.
6, in the utility model, between described drying device and sampling pump, dry gas meter is installed, directly obtains the sampling volume of the dry air under room temperature, add in control panel and be directly converted to 6%O
2under the calculation procedure of mark condition volume, after inputting weighing result, directly can show mark condition 6%O simultaneously
2under smoke dust discharge concentration.
7, in the utility model, described main frame automaton synchronously installs lambda sensor, temperature sensor, pressure transducer, barometer, and integrated above test function, carries out integrated design on the control panel.
8, the utility model also has the following advantages: 1., the utility model accurately can measure low concentration dust concentration under high humidity, highly corrosive condition, lack a difficult problem for low concentration tobacco damping-off means after solving coal unit " minimum discharge " transformation, a kind of thermal power plant minimum discharge dust concentration test macro and method of testing are provided; 2. the optimizing operation that, the utility model is Thermal Power Enterprises dust pelletizing system, desulphurization system provides truly, data accurately; 3., the successful research and development of the utility model minimum discharge test macro technical support of will China be administered to PM2.5 and provide accurate and effective; 4., the utility model provides for Thermal Power Enterprises flue dust on-line monitoring equipment the service of demarcation, ensures the accuracy of on-line monitoring equipment, promptness and stability; 5., the utility model promotes the formulation process of new " smoke-dust measurement method " new standard.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, description detailed, complete is further done to the utility model.
With reference to Fig. 1, present system comprises L-type sampling mouth 1, three grades of membrane filtration devices 2, sampling gun 3, pitot tube 4, suck-back device 5, pressure angle sensor 6, flue-gas temperature sensor 7, lambda sensor 8, one-level CaCl
2drying device 9, secondary silica gel drying device 10, gas meter 11, frequency-change sampling pump 12 and main frame automaton 13, described L-type sampling mouth 1 is connected by screw thread with three grades of membrane filtration devices 2, sampling gun 3 is connected by screw thread with three grades of membrane filtration devices 2, sampling gun 3 adopts 316L material, pitot tube 4 and sampling gun 3 weld together, and pitot tube 4 and sampling gun 3 keeping parallelism, the head of pitot tube 4 is positioned at the top of L-type sampling mouth 1, spacing is 5mm, the afterbody of pitot tube 4 is connected with main frame automaton 13 by sebific duct, described suck-back device 5 is positioned at the front end of sampling gun 3, pressure angle sensor 6, flue-gas temperature sensor 7 and lambda sensor 8 are fixed on the inside of sampling gun 3 successively, described pressure angle sensor 6, flue-gas temperature sensor 7 is all connected with main frame automaton 13 by data cable with lambda sensor 8, described one-level CaCl
2drying device 9 is connected with sampling gun 3 by flexible pipe, and secondary silica gel drying device 10 is by sebific duct and one-level CaCl
2drying device 9 is connected, described gas meter 11 adopts dry gas meter, gas meter 11 entrance is connected by flexible pipe with secondary silica gel drying device 10, gas meter 11 outlet is connected by flexible pipe with frequency-change sampling pump 12, described frequency-change sampling pump 12 is connected with main frame automaton 13 by transmission cable, controls exerting oneself of frequency-change sampling pump 12 and calculating sampling volume by main frame automaton 13.
Claims (1)
1. thermal power plant's minimum discharge dust concentration test macro, is characterized in that: this system comprises L-type sampling mouth (1), three grades of membrane filtration devices (2), sampling gun (3), pitot tube (4), suck-back device (5), pressure angle sensor (6), flue-gas temperature sensor (7), lambda sensor (8), one-level CaCl
2drying device (9), secondary silica gel drying device (10), gas meter (11), frequency-change sampling pump (12) and main frame automaton (13), described L-type sampling mouth (1) is connected with three grades of membrane filtration devices (2), sampling gun (3) is connected with three grades of membrane filtration devices (2), pitot tube (4) and sampling gun (3) are fixed together, and pitot tube (4) and sampling gun (3) keeping parallelism, the head of pitot tube (4) is positioned at the top of L-type sampling mouth (1), spacing is 5mm, the afterbody of pitot tube (4) is connected with main frame automaton (13) by sebific duct, described suck-back device (5) is positioned at the front end of sampling gun (3), described pressure angle sensor (6), flue-gas temperature sensor (7) and lambda sensor (8) are fixed on the inside of sampling gun (3) successively, described pressure angle sensor (6), flue-gas temperature sensor (7) is all connected with main frame automaton (13) by data cable with lambda sensor (8), described one-level CaCl
2drying device (9) is connected with sampling gun (3) by flexible pipe, and secondary silica gel drying device (10) is by sebific duct and one-level CaCl
2drying device (9) is connected, described gas meter (11) entrance is connected by flexible pipe with secondary silica gel drying device (10), gas meter (11) outlet is connected by flexible pipe with frequency-change sampling pump (12), and described frequency-change sampling pump (12) is connected with main frame automaton (13) by transmission cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520883398.8U CN205157383U (en) | 2015-11-09 | 2015-11-09 | Minimum discharge cigarette dust content of thermal power plant test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520883398.8U CN205157383U (en) | 2015-11-09 | 2015-11-09 | Minimum discharge cigarette dust content of thermal power plant test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205157383U true CN205157383U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520883398.8U Expired - Fee Related CN205157383U (en) | 2015-11-09 | 2015-11-09 | Minimum discharge cigarette dust content of thermal power plant test system |
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| CN (1) | CN205157383U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414299A (en) * | 2018-05-17 | 2018-08-17 | 太原海纳辰科仪器仪表有限公司 | A kind of stationary source exhaust gas sampling apparatus and the method for sampling |
| CN109164025A (en) * | 2018-11-15 | 2019-01-08 | 中建材环保研究院（江苏）有限公司 | A kind of thermal power plant PM2.5 test device and method |
-
2015
- 2015-11-09 CN CN201520883398.8U patent/CN205157383U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414299A (en) * | 2018-05-17 | 2018-08-17 | 太原海纳辰科仪器仪表有限公司 | A kind of stationary source exhaust gas sampling apparatus and the method for sampling |
| CN109164025A (en) * | 2018-11-15 | 2019-01-08 | 中建材环保研究院（江苏）有限公司 | A kind of thermal power plant PM2.5 test device and method |
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| 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: 20160413 Termination date: 20171109 |