CN201653862U - Pulverized coal concentration on-line monitoring system of power plant boiler - Google Patents
Pulverized coal concentration on-line monitoring system of power plant boiler Download PDFInfo
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- CN201653862U CN201653862U CN2010201400973U CN201020140097U CN201653862U CN 201653862 U CN201653862 U CN 201653862U CN 2010201400973 U CN2010201400973 U CN 2010201400973U CN 201020140097 U CN201020140097 U CN 201020140097U CN 201653862 U CN201653862 U CN 201653862U
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Abstract
The utility model relates to a pulverized coal concentration on-line monitoring system of a power plant boiler, which is connected with an air powder tube of the boiler, and comprises a monitoring host and at least one measuring device; the output end of the measuring device is connected with the input end of the monitoring host; the measuring device comprises 2 measuring probes and 3 differential voltage transmitters; one measuring probe is arranged before an air powder mixing point of the air powder tube, and the other one is arranged behind the air powder mixing point; each measuring probe comprises a total voltage taking tube and a static voltage taking tube; among the 3 differential voltage transmitters, two are used for respectively measuring the difference of the total voltage and the static voltage of each measuring probe, and other one is used for measuring the voltage difference of the static voltage taking tubes of the two measuring probes so as to obtain the voltage drop of air outlet powder along a pipeline; and the output ends of the 3 differential voltage transmitters are connected with the monitoring host. The pulverized coal concentration on-line monitoring system of the power plant boiler has the advantages of high accuracy, low manufacturing cost, high adaptability, good following characteristic and low maintenance workload.
Description
Technical field
The utility model relates to a kind of thermal measurement system, relates in particular to the coal powder density on-line monitoring system in a kind of station boiler primary wind and powder pipeline.
Background technology
In thermal power plant's energy conversion process, boiler changes the chemical energy of fuel the heat energy of steam into, and the quality of boiler combustion operating mode is determining the economy and the security of boiler plant and the operation of whole generating factory to a great extent.
Burning optimization is the needs of boiler operatiopn security: it is improper that burning is adjusted, and can cause problems such as eccentricity of fire in the burner hearth, overlap, ignition point position are unreasonable, burner region coking, steam temperature deviation, oxygen amount deviation.Burning optimization is the requirement of boiler operatiopn economy: in the thermoelectricity cost of electricity-generating, fuel cost accounts for more than 70%, and burning optimization can reduce flue gas loss and incomplete combustion loss, thereby improves boiler operating efficiency.
And in the burning of boiler is adjusted, the reasonable distribution of coal amount and combustion air is a basic condition of safe and economical boiler operation, reasonable distribution comprises two layers of meaning: the one, and keep and send into total coal-air ratio in the stove, promptly keep the burner hearth excess air coefficient within the limits prescribed; The 2nd, each burner is all sent into fuel according to certain coal-air ratio to burner hearth, and promptly coal-air ratio is answered mean allocation, only in this way, just can make combustion efficiency the best of whole burner hearth.If each burner is sent into fuel and air with the ratio of difference great disparity, although the burner hearth excess air coefficient is still kept within the limits prescribed, but for single burner, the inequality of air capacity and coal dust is distributed, the serious wind that lacks that has in the different burners will be made, the serious coal that lacks that has influences the safe and economical boiler burning.
(1) the too high or too low influence of coal powder density: when coal powder density is too high in the coal-burning boiler, pulverized coal feed pipe, the stifled powder of coal dust takes place easily, can cause spontaneous combustion of pulverized coal in the pipe simultaneously, burn out accidents such as pulverized coal feed pipe and burner to boiler operatiopn; In addition, coal powder density is too high also can to cause incomplete combustion, and boiler efficiency reduction, carbon monoxide increase, aggravate the high temperature corrosion of boiler furnace internal heating surface and superheater surface.Cross when low when coal powder density in the pulverized coal feed pipe, fire box temperature can reduce, and the burner hearth fire extinguishing takes place easily, and the boiler band is not gone up load simultaneously, and vapour pressure reduces;
(2) coal powder density distributes uneven influence to boiler: for the boiler of corner tangential firing, wind speed and coal powder density skewness in each pulverized coal feed pipe, the skew of burner hearth combustion centre, cause the local slagging scorification of furnace wall easily, heating surface cigarette temperature deviation is excessive, local overheating, overheated, phenomenon of coking appear in high temperature superheater, high temperature reheater, even cause booster.
To measuring accurately for a long time of coal powder density, resemble to the boiler operatiopn personnel and increased " eyes " that burning is adjusted, the size of wind speed and coal powder density in each wind powder pipe of stoker personnel energy real time inspection, at any time adjust boiler first and second wind speed proportioning and each pipeline and go into stove coal dust amount, wind speed and coal powder density can be adjusted evenly in the wind powder pipe, can allow boiler move under the operating mode of less expensive all the time.So can obviously improve combustion conditions, significantly improve boiler combustion efficiency.
Three classes that mainly contain that application has been arranged on the home market at present: (1) temperature differential method: this scheme has obtained approval to a certain degree on the correctness of the trend of measurement, but precision is not enough, and storage formula pulverized coal carried by hot air system in can only being applied to, make it that very large limitation be arranged; (2) electrostatic method: this method can produce very large error after coal variation and the variation of coal dust humidity, so do not approved widely at present; (3) microwave method, this method requires high to running environment, and probe can be contaminated after operation a period of time, thereby influences measuring accuracy greatly, so this method does not get the nod on a large scale yet.
Abroad, some research institutions and enterprise pay much attention to the exploitation of coal powder density Research on Measurement System, develop jointly out a kind of static load detector of non-insertion as ABBAutomation and Teesside university, what adopt is a brachymemma pipe or the one section reel that inserts wind powder pipe, and the annular sensor that is embedded on the mandrel internal surface with a row detects the alternating current load.SWR (Germany) has developed a kind of microwave meter, has used this instrument in the test in the Kingsnorth power station of PowerGen.The scheme that adopts passive acoustic sensor to measure is also arranged, and the sound that produces by sound that the pulverized coal particle motion is produced the collision of tube wall or air turbulence is measured the flow of coal dust.But detection method ubiquities such as above-mentioned these static, microwave, acoustics the expense costliness, difficult in maintenance, be difficult for calibration, precision is not high and shortcoming such as bad adaptability.
Summary of the invention
Problem to be solved in the utility model is: there is bad adaptability in the monitoring method of existing power boiler breeze concentration, problems such as error is big, cost is high, Operation and Maintenance difficulty need provide a kind of accuracy of measurement height, low cost of manufacture, adaptability is strong, following feature good, maintenance workload is little power boiler breeze concentration on-line monitoring system.
The technical solution of the utility model is: a kind of power boiler breeze concentration on-line monitoring system, the wind powder pipe that connects boiler, comprise monitoring main frame and at least one group of measurement mechanism, the output terminal of measurement mechanism connects the input end of monitoring main frame, measurement mechanism comprises 2 measuring sondes and 3 differential pressure transmitters, before 2 one of measuring sondes were arranged on the wind powder mixing point of wind powder pipe, one behind wind powder mixing point; Described measuring sonde comprises stagnation pressure pressure pipe and static pressure pressure pipe, stagnation pressure pressure Guan Yiduan sealing, one end is provided with the opening of being made up of a cross-section profile and a curved profile, static pressure pressure Guan Yiduan sealing, an end opening, the all vertical straight tube place that inserts wind powder pipe of opening one end of stagnation pressure pressure pipe and static pressure pressure pipe, the cross-section profile of stagnation pressure pressure tube opening is parallel with the wind direction of wind powder pipe, the windward side of curved profile in wind powder pipe, static pressure pressure pipe is located at the leeward side of stagnation pressure pressure pipe, and opening direction is vertical with the wind direction of wind powder pipe; The sealed end of stagnation pressure pressure pipe connects a stagnation pressure secondary settling chamber, the sealed end of static pressure pressure pipe connects a static pressure secondary settling chamber, the inlet of stagnation pressure secondary settling chamber and stagnation pressure pressure pipe internal communication, the inlet of static pressure secondary settling chamber and static pressure pressure pipe internal communication, the outlet of the outlet of stagnation pressure secondary settling chamber and static pressure secondary settling chamber is respectively equipped with impulse joint, pressure guiding pipe, and the exit position of stagnation pressure secondary settling chamber and static pressure secondary settling chamber all is higher than the entry position; 2 measuring sondes connect a differential pressure transmitter respectively, and wherein the outlet of the stagnation pressure secondary settling chamber of measuring sonde connects the differential pressure transmitter high-pressure side, and the outlet of static pressure secondary settling chamber connects low-pressure side; The static pressure secondary settling chamber of 2 measuring sondes also connects a differential pressure transmitter, wherein is positioned at the preceding connection differential pressure transmitter high-pressure side of wind powder mixing point, and the output terminal of 3 differential pressure transmitters connects the monitoring main frame.
Stagnation pressure pressure pipe and static pressure pressure pipe are provided with the high temperature alloy ceramic layer outward, and stagnation pressure pressure pipe is fixedlyed connected with wind powder pipe by flange with static pressure pressure pipe.
Further, also be provided with anti-block apparatus in stagnation pressure pressure pipe and the static pressure pressure pipe, described anti-block apparatus is formed hollow taper swing rod structure by at least 3 " 7 " type braces, the cone tip part of swing rod structure is provided with limited block, in the middle of the swing rod structure is a straight-bar, straight-bar is rotatably connected with connecting link by hook, the other end is provided with pendulum, the awl point of swing rod structure is towards pendulum, the awl end, is towards connecting link, connecting link is connected with the sealed end of stagnation pressure pressure pipe with static pressure pressure pipe, and the external diameter maximal value of swing rod structure is less than the internal diameter of stagnation pressure pressure pipe and static pressure pressure pipe, and pendulum stretches out the opening of stagnation pressure pressure pipe and static pressure pressure pipe.
Measurement mechanism is provided with thermal resistance, and before described thermal resistance was installed in the wind powder mixing point of wind powder pipe, thermal resistance connected the monitoring main frame.
Preferred stagnation pressure secondary settling chamber and static pressure secondary settling chamber are tubulose, become 25 °～35 ° inclinations to be connected with stagnation pressure pressure pipe and static pressure pressure pipe respectively.
The primary wind and powder pipeline of storage formula pulverized coal carried by hot air system and middle storage formula transporting pulverized coal with exhaust gas system boiler was installed a measuring sonde during the utility model was installed in before wind powder mixing point, and a measuring sonde is installed behind wind powder mixing point.In 3 differential pressure transmitters, two stagnation pressure and static pressure pressure reduction that are used for measuring respectively each measuring sonde, also have one and be used to measure two differential pressures between the measuring sonde static pressure pressure pipe, to get of the pressure drop of air-out powder along pipeline, the static pressure pressure pipe of measuring sonde connected the high-pressure side of differential pressure transmitter before its apoplexy powder mixed, the wind powder mixes the low-pressure side of the static tube connection differential pressure transmitter of back measuring sonde, the standard signal of all differential pressure transmitter outputs is delivered to the monitoring main frame, in the monitoring main frame, calculate then, get air-out powder speed and coal powder density by corresponding mathematical model.
Scattered control system in the utility model can also comprise compensation system and arithmetic unit, and the standard signal of transmitter output is delivered to the monitoring main frame, can obtain coal powder density through excess temperature, pressure and other parameters compensation and mathematical operation again.
The utility model the utility model accuracy of measurement height, low cost of manufacture, adaptability is strong, following feature good, maintenance workload is little.Technology by multiple measuring principle compares, adopted pressure decline method to carry out the exploitation of power boiler breeze concentration on-line monitoring system, based on pressure signal, can follow the tracks of the variation of coal powder density fast, can be good at adapting to moving on-the-spot rugged environment in addition, the antijamming capability of equipment and the adaptive faculty that coal is changed are strong, and after the problem that has solved the anti-blocking resistant wear of measuring sonde, overcome the problem that the long-term service precision of electrostatic method and microwave method descends, made measuring system in the long-term precision that can keep relative stability in service.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation that the utility model examples measure device is connected with wind powder pipe.
Fig. 3 is the utility model examples measure device part synoptic diagram.
Fig. 4 is stagnation pressure pressure pipe and stagnation pressure secondary settling chamber among the utility model embodiment, the syndeton synoptic diagram of static pressure pressure pipe and static pressure secondary settling chamber.
Fig. 5 is the structural representation that the utility model measurement mechanism is connected with pressure difference transmitter.
Fig. 6 is the utility model anti-block apparatus structural representation.
Fig. 7 is the details Fang Datu of the utility model anti-block apparatus.
Fig. 8 is the structural representation of measurement mechanism installation site among the utility model embodiment.
Embodiment
As shown in Figure 1, the utility model connects the wind powder pipe 3 of boiler, comprise a monitoring main frame 1 and at least one group of measurement mechanism 2, the output signal Input Monitor Connector main frame 1 of each measurement mechanism comprises 2 measuring sondes 4 and 3 differential pressure transmitters 19 in every group of measurement mechanism 2.
As shown in Figure 2, described measuring sonde 4 comprises stagnation pressure pressure pipe 5 and static pressure pressure pipe 6, the sealing of stagnation pressure pressure pipe 5 one ends, one end is provided with the opening of being made up of a cross-section profile and a curved profile, static pressure pressure pipe 6 one ends sealings, an end opening, all vertical straight tube place that inserts wind powder pipe 3 of opening one end of stagnation pressure pressure pipe 5 and static pressure pressure pipe 6, the assurance direction of flow becomes 90 ° with pressure pipe direction of insertion, otherwise can influence measuring accuracy, cause bigger error.The cross-section profile of stagnation pressure pressure pipe 5 openings is parallel with the wind direction of wind powder pipe 3, the windward side of curved profile in wind powder pipe 3, it is big that such opening is got the wind area, and the stagnation pressure pressure is effective, static pressure pressure pipe 6 is located at the leeward side of stagnation pressure pressure pipe 5, and opening direction is vertical with the wind direction of wind powder pipe 3.Shown in Fig. 2,3,4, the sealed end of stagnation pressure pressure pipe 5 connects a stagnation pressure secondary settling chamber 7, the sealed end of static pressure pressure pipe 6 connects a static pressure secondary settling chamber 7 ', the inlet of stagnation pressure secondary settling chamber 7 and stagnation pressure pressure pipe 5 internal communication, the inlet of static pressure secondary settling chamber 7 ' and static pressure pressure pipe 6 internal communication, the outlet of the outlet of stagnation pressure secondary settling chamber 7 and static pressure secondary settling chamber 7 ' is respectively equipped with impulse joint 8, pressure guiding pipe 9, and the exit position of stagnation pressure secondary settling chamber 7 and static pressure secondary settling chamber 7 ' all is higher than the entry position.
As Fig. 5,2 measuring sondes 4 of the utility model connect a differential pressure transmitter 19 respectively, and wherein the outlet of the stagnation pressure secondary settling chamber 7 of measuring sonde connects differential pressure transmitter 19 high-pressure sides, and the outlet of static pressure secondary settling chamber 7 ' connects low-pressure side; The static pressure secondary settling chamber 7 ' of 2 measuring sondes 4 also connects a differential pressure transmitter 19, wherein is positioned at preceding connection differential pressure transmitter 19 high-pressure sides of wind powder mixing point, and the output terminal of 3 differential pressure transmitters 19 connects monitoring main frame 1.
Be provided with the high temperature alloy ceramic layer outside stagnation pressure pressure pipe 5 and the static pressure pressure pipe 6, stagnation pressure pressure pipe 5 is fixedlyed connected with wind powder pipe 3 by flange 18 with static pressure pressure pipe 6.
Also be provided with anti-block apparatus 10 in stagnation pressure pressure pipe 5 and the static pressure pressure pipe 6, as Fig. 6 and Fig. 7, described anti-block apparatus 10 is formed hollow taper swing rod structure 13 by at least 3 " 7 " type braces 12, the cone tip part of swing rod structure 13 is provided with limited block 14, in the middle of the swing rod structure 13 is a straight-bar 11, straight-bar 11 is rotatably connected with connecting link 15 by linking up with 16, the other end is provided with pendulum 17, the awl point of swing rod structure 13 is towards pendulum 17, the awl end, is towards connecting link 15, connecting link 15 is connected with the sealed end of stagnation pressure pressure pipe 5 with static pressure pressure pipe 6, the external diameter maximal value of swing rod structure 13 is less than the internal diameter of stagnation pressure pressure pipe 5 and static pressure pressure pipe 6, and pendulum 17 stretches out the opening of stagnation pressure pressure pipe 5 and static pressure pressure pipe 6.
Measurement mechanism is provided with thermal resistance, and before described thermal resistance was installed in the wind powder mixing point of wind powder pipe 3, thermal resistance connected monitoring main frame 1.
Preferably, stagnation pressure secondary settling chamber 7 and static pressure secondary settling chamber 7 ' are tubulose, are connected with 6 one-tenth 25 °～35 ° inclinations of stagnation pressure pressure pipe 5 and static pressure pressure pipe respectively.
The utility model is an anti-block apparatus 10 to what first time of coal dust deposited interception, wind movable pendulum hammer 17 in the wind powder pipe (3), driving swing rod structure 13 swings in stagnation pressure pressure pipe 5 and static pressure pressure pipe 6, prevent the coal dust deposition, stagnation pressure secondary settling chamber 7 and static pressure two settling chambers 7 ' make the coal dust deposition of small amount of residual and utilize the angle of inclination of settling chamber to make the coal powder natural landing, play secondary and stop the coal dust deposition, connect the anti-blocking performance that differential pressure transmitter can strengthen measurement mechanism again by the secondary settling chamber.
Stagnation pressure pressure pipe 5 and the static pressure pressure pipe 6 outer high temperature alloy ceramic layers that are provided with., the wearing quality of enhancing measurement mechanism.
The monitoring main frame also comprises compensation system and arithmetic unit, and the error that temperature and pressure is caused compensates and carry out the calculating of coal powder density and wind speed, and temperature information is obtained by thermal resistance, and pressure information is obtained by measuring sonde.
As Fig. 8, before 24 one of measuring sondes are arranged on the wind powder mixing point of wind powder pipe 3, one behind wind powder mixing point, wherein T is the thermal resistance installation site, P1 mixes the stagnation pressure pressure pipe of preceding measuring sonde for the wind powder, P2 is the stagnation pressure pressure pipe that the wind powder mixes the back measuring sonde for the static pressure pressure pipe of the preceding measuring sonde of wind powder mixing, P3, and P4 is the static pressure pressure pipe of measuring sonde after the wind powder mixes.
Before the station boiler commencement of commercial operation, need demarcate equipment, to reduce owing to equipment is installed the error that causes, carry out under cold conditions owing to demarcating in addition, and be in hot operation down when station boiler normally moves, the medium temperature of surveying change the accuracy will influence the measuring wind speed result, therefore adopt the temperature of the interior wind powder mixture of integrated abrasion resistant thermocouple or thermal resistance measuring channel, and utilize corresponding mathematical method to carry out temperature compensation.
Claims (9)
1. power boiler breeze concentration on-line monitoring system, the wind powder pipe (3) that connects boiler, it is characterized in that comprising monitoring main frame (1) and at least one group of measurement mechanism (2), the output terminal of measurement mechanism (2) connects the input end of monitoring main frame (1), measurement mechanism (2) comprises 2 measuring sondes (4) and 3 differential pressure transmitters (19), before 2 (4) one of measuring sondes were arranged on the wind powder mixing point of wind powder pipe (3), one behind wind powder mixing point; Described measuring sonde (4) comprises stagnation pressure pressure pipe (5) and static pressure pressure pipe (6), the sealing of stagnation pressure pressure pipe (5) one ends, one end is provided with the opening of being made up of a cross-section profile and a curved profile, the sealing of static pressure pressure pipe (6) one ends, one end opening, the all vertical straight tube place that inserts wind powder pipe (3) of opening one end of stagnation pressure pressure pipe (5) and static pressure pressure pipe (6), the cross-section profile of stagnation pressure pressure pipe (5) opening is parallel with the wind direction of wind powder pipe (3), the windward side of curved profile in wind powder pipe (3), static pressure pressure pipe (6) is located at the leeward side of stagnation pressure pressure pipe (5), and opening direction is vertical with the wind direction of wind powder pipe (3); The sealed end of stagnation pressure pressure pipe (5) connects a stagnation pressure secondary settling chamber (7), the sealed end of static pressure pressure pipe (6) connects a static pressure secondary settling chamber (7 '), the inlet of stagnation pressure secondary settling chamber (7) and stagnation pressure pressure pipe (5) internal communication, the inlet of static pressure secondary settling chamber (7 ') and static pressure pressure pipe (6) internal communication, the outlet of stagnation pressure secondary settling chamber (7) and the outlet of static pressure secondary settling chamber (7 ') are respectively equipped with impulse joint (8), pressure guiding pipe (9), the exit position of stagnation pressure secondary settling chamber (7) and static pressure secondary settling chamber (7 ') all is higher than the entry position; 2 measuring sondes (4) connect a differential pressure transmitter (19) respectively, and wherein the outlet of the stagnation pressure secondary settling chamber (7) of measuring sonde connects differential pressure transmitter (19) high-pressure side, and the outlet of static pressure secondary settling chamber (7 ') connects low-pressure side; The static pressure secondary settling chamber (7 ') of 2 measuring sondes (4) also connects a differential pressure transmitter (19), wherein is positioned at preceding connection differential pressure transmitter (19) high-pressure side of wind powder mixing point, and the output terminal of 3 differential pressure transmitters (19) connects monitoring main frame (1).
2. a kind of power boiler breeze concentration on-line monitoring system according to claim 1, it is characterized in that being provided with the high temperature alloy ceramic layer outside stagnation pressure pressure pipe (5) and the static pressure pressure pipe (6), stagnation pressure pressure pipe (5) is fixedlyed connected with wind powder pipe (3) by flange (18) with static pressure pressure pipe (6).
3. a kind of power boiler breeze concentration on-line monitoring system according to claim 1 and 2, it is characterized in that also being provided with anti-block apparatus (10) in stagnation pressure pressure pipe (5) and the static pressure pressure pipe (6), described anti-block apparatus (10) is formed hollow taper swing rod structure (13) by at least 3 " 7 " type braces (12), the cone tip part of swing rod structure (13) is provided with limited block (14), in the middle of the swing rod structure (13) is a straight-bar (11), straight-bar (11) is rotatably connected with connecting link (15) by hook (16), the other end is provided with pendulum (17), the awl point of swing rod structure (13) is towards pendulum (17), the awl end, is towards connecting link (15), connecting link (15) is connected with the sealed end of stagnation pressure pressure pipe (5) with static pressure pressure pipe (6), the external diameter maximal value of swing rod structure (13) is less than the internal diameter of stagnation pressure pressure pipe (5) and static pressure pressure pipe (6), and pendulum (17) stretches out the opening of stagnation pressure pressure pipe (5) and static pressure pressure pipe (6).
4. a kind of power boiler breeze concentration on-line monitoring system according to claim 1 and 2 is characterized in that measurement mechanism is provided with thermal resistance, and before described thermal resistance was installed in the wind powder mixing point of wind powder pipe (3), thermal resistance connected monitoring main frame (1).
5. a kind of power boiler breeze concentration on-line monitoring system according to claim 3 is characterized in that measurement mechanism is provided with thermal resistance, and before described thermal resistance was installed in the wind powder mixing point of wind powder pipe (3), thermal resistance connected monitoring main frame (1).
6. a kind of power boiler breeze concentration on-line monitoring system according to claim 1 and 2, it is characterized in that stagnation pressure secondary settling chamber (7) and static pressure secondary settling chamber (7 ') are tubulose, become 25 °～35 ° inclinations to be connected with stagnation pressure pressure pipe (5) and static pressure pressure pipe (6) respectively.
7. a kind of power boiler breeze concentration on-line monitoring system according to claim 3, it is characterized in that stagnation pressure secondary settling chamber (7) and static pressure secondary settling chamber (7 ') are tubulose, become 25 °～35 ° inclinations to be connected with stagnation pressure pressure pipe (5) and static pressure pressure pipe (6) respectively.
8. a kind of power boiler breeze concentration on-line monitoring system according to claim 4, it is characterized in that stagnation pressure secondary settling chamber (7) and static pressure secondary settling chamber (7 ') are tubulose, become 25 °～35 ° inclinations to be connected with stagnation pressure pressure pipe (5) and static pressure pressure pipe (6) respectively.
9. a kind of power boiler breeze concentration on-line monitoring system according to claim 5, it is characterized in that stagnation pressure secondary settling chamber (7) and static pressure secondary settling chamber (7 ') are tubulose, become 25 °～35 ° inclinations to be connected with stagnation pressure pressure pipe (5) and static pressure pressure pipe (6) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010201400973U CN201653862U (en) | 2010-03-24 | 2010-03-24 | Pulverized coal concentration on-line monitoring system of power plant boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201400973U CN201653862U (en) | 2010-03-24 | 2010-03-24 | Pulverized coal concentration on-line monitoring system of power plant boiler |
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| CN201653862U true CN201653862U (en) | 2010-11-24 |
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| CN2010201400973U Expired - Lifetime CN201653862U (en) | 2010-03-24 | 2010-03-24 | Pulverized coal concentration on-line monitoring system of power plant boiler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680370A (en) * | 2012-05-21 | 2012-09-19 | 常州市新港热电有限公司 | Pulverized coal concentration online monitoring system |
| CN105136609A (en) * | 2015-08-05 | 2015-12-09 | 中国石油天然气股份有限公司 | Method and device for measuring mass percentage concentration of coal powder in coal bed gas well output liquid |
| CN110530434A (en) * | 2019-10-09 | 2019-12-03 | 北京华电天仁电力控制技术有限公司 | A kind of coal dust pulverized coal feed pipe apoplexy powder speed and coal powder density self-operated measuring unit |
-
2010
- 2010-03-24 CN CN2010201400973U patent/CN201653862U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680370A (en) * | 2012-05-21 | 2012-09-19 | 常州市新港热电有限公司 | Pulverized coal concentration online monitoring system |
| CN105136609A (en) * | 2015-08-05 | 2015-12-09 | 中国石油天然气股份有限公司 | Method and device for measuring mass percentage concentration of coal powder in coal bed gas well output liquid |
| CN105136609B (en) * | 2015-08-05 | 2018-02-02 | 中国石油天然气股份有限公司 | Method and device for measuring mass percentage concentration of coal powder in coal bed gas well output liquid |
| CN110530434A (en) * | 2019-10-09 | 2019-12-03 | 北京华电天仁电力控制技术有限公司 | A kind of coal dust pulverized coal feed pipe apoplexy powder speed and coal powder density self-operated measuring unit |
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Address after: 210009 room A808, World Trade Center, No. 67 Shanxi Road, Gulou District, Jiangsu, China Patentee after: Longkon wisdom Polytron Technologies Inc Address before: Gulou District of Nanjing city in Jiangsu province 210013 dinghuai Gate No. 12 window of the world software technology park Patentee before: Nanjing Luculent Software Co., Ltd. |
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Granted publication date: 20101124 |