CN202813343U - Boiler with metering thermostatic coal-feed unit - Google Patents
Boiler with metering thermostatic coal-feed unit Download PDFInfo
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- CN202813343U CN202813343U CN 201220343081 CN201220343081U CN202813343U CN 202813343 U CN202813343 U CN 202813343U CN 201220343081 CN201220343081 CN 201220343081 CN 201220343081 U CN201220343081 U CN 201220343081U CN 202813343 U CN202813343 U CN 202813343U
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Abstract
The utility model relates to a boiler with a metering thermostatic coal-feed unit. The boiler comprises a combustion chamber, a flue, a door and a hot fume outlet. The boiler is connected with a metering thermostatic coal-feed unit which comprises a temperature detector, a control system and a metering coal feeder. The temperature detector is disposed at the hot fume outlet. The metering coal feeder feeds coal to the combustion chamber through a conveyer belt. The control system comprises a first controller, a second controller and a temperature threshold storage. The first controller calculates theoretical coal feed according to a difference between measured value and temperature threshold. The second controller monitors actual coal feed through a speed sensor and a weight sensor on the metering coal feeder, compares called theoretical coal feed, and ends coal feeding when the actual coal feed reaches the theoretical coal feed. By metering coal feed according to the temperature of hot fume, energy can be saved, fume temperature is accurately controlled, and the hot fume meeting the need of drying materials can be obtained.
Description
Technical field
The utility model relates to a kind of boiler with metering temperature adjustment coal feeder, belongs to the industrial equipment field.
Background technology
The hot flue gas that the coal drying device utilizes the boiler combustion coal to produce usually carries out drying to coal, and the height of flue-gas temperature directly affects the effect of coal drying; Temperature is low can to make the coal drying insufficient, be unfavorable for the follow-up use of coal, excess Temperature then can make coal burn under the effect of oxidizer, has potential safety hazard, therefore only have the temperature of hot flue gas is controlled within the specific limits, just can guarantee under the prerequisite of safety, coal dust fully to be dried.
Produce the temperature of hot flue gas in order to control boiler, people are coal time and the coal amount of by virtue of experience estimating bunker coal usually, but because the error of experience tends to cause bunker coal coal time or coal amount inaccurate, cross low or too high problem and produce hot flue-gas temperature; In recent years, in order to control the Best Times of coal, prevent that coal causes flue-gas temperature too high low with the untimely flue-gas temperature that causes of coal in advance, the method that has the researcher to propose set temperature alarm in boiler comes alert to carry out coal, disclose a kind of molded coal boiler with the automatic-prompting coal supply apparatus such as Chinese patent literature CN2632497Y, comprise body of heater, fire grate, burner hearth, smoke outlet flue, the heat convection smoke chamber, the chimney that links to each other with the heat convection smoke chamber, be opened in the device for coal that advances of body of heater front portion, be opened in the deslagging device at body of heater rear portion, the rear portion that it is characterized in that corresponding fire grate combustion zone is the middle front part of fire grate, be provided with temp sensor device and the acoustic-optic alarm that is mated at furnace body wall, when Combustion of Mould Coal on the fire grate makes temperature in the body of heater to position corresponding to sensor, automatic alarm prompting fireman coal, removed the increase that frequent observation post brings workload, alleviate working strength, guaranteed the work of boiler stability and safety.In the above-mentioned technology, when temperature reaches certain value in measuring stove, warning device sends signal at once, remind operating personnel's coal, but can not control for coal-supplying amount, operating personnel are coal by rule of thumb still, and artificial estimation is often inaccurate, cause easily the coal amount too much or very few, the problem that flue-gas temperature is too high or too low, the inner flue gas of the stove temperature can not accurately be controlled.
The utility model content
Although technical problem to be solved in the utility model is can send signal by warning device in the prior art to remind operating personnel's coal, and can not control for coal-supplying amount, operating personnel are coal by rule of thumb still, and artificial estimation is often inaccurate, cause easily the coal amount too much or very few, flue-gas temperature can not be controlled exactly; And then provide a kind of and can remind the coal time, can control again the boiler with metering temperature adjustment coal feeder of coal amount.
For solving the problems of the technologies described above, the utility model provides a kind of boiler with metering temperature adjustment coal feeder, comprises that body of heater is arranged on fire door and hot exhanst gas outlet on the described body of heater; Be provided with fiery chamber and flue in described body of heater inside, described fiery chamber communicates with described hot exhanst gas outlet by described flue; Also be provided with metering temperature adjustment coal feeder, described metering temperature adjustment coal feeder comprises thermal detector, control system and metering feeder; Be provided with in the described control system for storing temperature threshold value T
0Temperature threshold memory, the first controller and second controller; Be provided with velocity sensor, weight sensor on the described metering feeder; Described thermal detector is arranged on described hot smoke outlet; Described thermal detector is connected with described the first controller respectively with the temperature threshold memory, and described the first controller receives the temperature threshold T that temperature value that described thermal detector records and described temperature threshold memory are carried
0And compare, be used at the temperature value that records less than described temperature threshold T
0The time theory of computation coal-supplying amount and output; Described the first controller is connected with second controller, described velocity sensor, weight sensor are connected with described second controller, described second controller also is connected with described fire door, metering feeder, described second controller goes out actual coal-supplying amount according to the information calculations of described weight sensor and velocity sensor conveying, and compare with theoretical coal-supplying amount that described the first controller is carried, obtain be used to the beginning of the opening and closing of controlling described fire door and coal supply and the control information that stops and output; Described metering feeder also is provided with conveyer belt, and along the transmission direction of described conveyer belt, the end of described conveyer belt is positioned at and the contacted position of described fire door, is used for adding fuel to described fiery chamber.
Also be provided with display, described display is connected with second controller with described the first controller respectively, is used for showing described theoretical coal-supplying amount and actual coal-supplying amount.
Also comprise storage tank, described storage tank is connected with described metering feeder.
Also comprise coal heating-value determination instrument, described coal heating-value determination instrument is connected with described the first controller, described storage tank respectively, is used for measuring the calorific value of described storage tank coal and flowing to described the first controller.
Be provided with the gear flame board that is connected with described inboard wall of furnace body at described flue.
Described gear flame board comprises the first gear flame board and the second gear flame board, described the first gear flame board and the second gear flame board be arranged in parallel at described flue, the upper end of described the first gear flame board is connected with the inwall of described body of heater, and the lower end of described the second gear flame board is connected with the inwall of described body of heater; Has the passage that is suitable for the flue gas circulation between described the first gear flame board and the second gear flame board; Perpendicular to described flue axially, described the first gear flame board and the second gear flame board have interlaced area.
Described the first gear flame board and the second gear flame board are perpendicular to the inwall of described body of heater.
The utility model is compared with the prior art scheme has following beneficial effect:
(1) boiler with metering temperature adjustment coal feeder described in the utility model comprises body of heater, is arranged on fire door and hot exhanst gas outlet on the described body of heater; Be provided with fiery chamber and flue in described body of heater inside, described fiery chamber communicates with described hot exhanst gas outlet by described flue; Also be provided with metering temperature adjustment coal feeder, described metering temperature adjustment coal feeder comprises thermal detector, control system and metering feeder; Be provided with in the described control system for storing temperature threshold value T
0Temperature threshold memory, the first controller and second controller; Be provided with velocity sensor, weight sensor on the described metering feeder; Described thermal detector is arranged on described hot smoke outlet; Described thermal detector is connected with described the first controller respectively with the temperature threshold memory, and described the first controller receives the temperature value that described thermal detector records, the temperature threshold T that carries with described temperature threshold memory simultaneously
0Compare, when the temperature value that records less than described temperature threshold T
0The time theory of computation coal-supplying amount; Described the first controller is connected with second controller, described velocity sensor, weight sensor are connected with described second controller, the information that described second controller is carried according to described weight sensor and velocity sensor obtains actual coal-supplying amount, and compares with the theoretical coal-supplying amount of described the first controller transmission; Described second controller also is connected with described fire door, metering feeder, and described second controller is controlled the beginning of the opening and closing of described fire door and coal supply according to the comparative result of described actual coal-supplying amount and theoretical coal-supplying amount and stopped; Described metering feeder also is provided with conveyer belt, and along the transmission direction of described conveyer belt, the end of described conveyer belt is positioned at and the contacted position of described fire door, is used for adding fuel to described fiery chamber.
Measure by thermal detector after the flue-gas temperature of hot smoke outlet, thermal detector flows to the first controller with the temperature value T that measures, and the first controller is transferred the temperature threshold T of temperature threshold memory
0Compare, when T less than T
0The time, the first controller is according to both difference theory of computation coal-supplying amounts, and theoretical coal-supplying amount is transferred to second controller; Fire door is opened in second controller control, and simultaneously control metering feeder by the conveyer belt coal in the chamber that begins to warm oneself in front of a fire, velocity sensor and the weight sensor of metering feeder are transferred to second controller with measured value respectively, calculate actual coal-supplying amount by second controller, and compare with theoretical coal-supplying amount that the first controller transmits, when actual coal-supplying amount reaches theoretical coal-supplying amount, second controller control metering feeder stops coal, and fire door is closed in control, thermal detector is proceeded to measure afterwards, repeats said process; Can remind operating personnel's coal although avoided sending signal by temp sensor device and acoustic-optic alarm in the prior art, but can't control for coal-supplying amount, operating personnel still will control the coal amount with the personal experience, cause easily the coal amount too much or very few, the problem that flue-gas temperature is too high or too low, can accurately control coal-supplying amount according to flue-gas temperature by metering temperature adjustment coal feeder, when not causing coal resource waste, also can make the temperature of flue gas meet the requirement of coal drying.
(2) boiler with metering temperature adjustment coal feeder described in the utility model also is provided with display, and described display is connected with second controller with described the first controller respectively, is used for showing described theoretical coal-supplying amount and actual coal-supplying amount.Demonstrate theoretical coal-supplying amount and actual coal-supplying amount by display, thus running status that can the whole device of more accurate grasp, for the further work of device is prepared.
(3) boiler with metering temperature adjustment coal feeder described in the utility model, also comprise coal heating-value determination instrument, described coal heating-value determination instrument is connected with described the first controller, described storage tank respectively, is used for measuring the calorific value of described storage tank coal and flowing to described the first controller.The calorific value of each batch of coal is different, the theoretical coal-supplying amount needs that calculate and the coal of different batches are corresponding, therefore by being set, coal heating-value determination instrument measures the calorific value of each batch of coal, again the calorific value of measuring is flowed to the first controller, the theoretical coal-supplying amount that the first controller calculates is more accurate, thereby can hold exactly the coal amount.
(4) boiler with metering temperature adjustment coal feeder described in the utility model is provided with the gear flame board that is connected with described inboard wall of furnace body at described flue.The utility model is by arranging the gear flame board between fiery chamber and hot exhanst gas outlet, fiery chamber and hot exhanst gas outlet are separated, prevent that the indoor flame of fire from entering drying device with the hot flue gas hot exhanst gas outlet of together scurrying out, thereby avoided flame directly to contact with coal, caused easily the danger of coal combustion even device explosion.
(5) boiler with metering temperature adjustment coal feeder described in the utility model, be provided with the first gear flame board and the second gear flame board that is parallel to each other at described flue, the upper end of described the first gear flame board is connected with the inwall of described body of heater, and the lower end of described the second gear flame board is connected with the inwall of described body of heater; Has the passage that is suitable for the flue gas circulation between described the first gear flame board and the second gear flame board; Perpendicular to described flue axially, described the first gear flame board and the second gear flame board have interlaced area.Between described first, second gear flame board and the inboard wall of furnace body, and the passage of retaining between first, second gear flame board, fiery indoor flare can effectively stoped, when particularly the flare of flame root is scurried into drying device, keep flue gas can flow freely dry coal dust in the drying device.
Description of drawings
Content of the present utility model is easier to be understood in order to make, and the utility model is further detailed content of the present utility model with the specific embodiment by reference to the accompanying drawings.
Fig. 1 boiler structure schematic diagram with metering temperature adjustment coal feeder described in the utility model;
Fig. 2 boiler structure schematic diagram with metering temperature adjustment coal feeder and display described in the utility model;
Fig. 3 boiler structure schematic diagram with metering temperature adjustment coal feeder, display and storage tank described in the utility model;
Fig. 4 boiler structure schematic diagram with metering temperature adjustment coal feeder, display, storage tank and coal heating-value determination instrument described in the utility model;
Fig. 5 boiler structure schematic diagram with metering temperature adjustment coal feeder, display, storage tank, coal heating-value determination instrument and gear flame board described in the utility model;
Fig. 6 boiler operatiopn flow chart with metering temperature adjustment coal feeder, display, storage tank, coal heating-value determination instrument and gear flame board described in the utility model;
Wherein Reference numeral is: 1-body of heater, 2-fire door, the hot exhanst gas outlet of 3-, the 4-flue, 5-fire chamber, 6-thermal detector, 7-measures feeder, 8-conveyer belt, 9-temperature threshold memory, 10-the first controller, 11-second controller, 12-velocity sensor, the 13-weight sensor, 14-display, 15-storage tank, 16-coal heating-value determination instrument, 17-the first gear flame board, 18-the second gear flame board.
The specific embodiment
A kind of boiler with measuring the temperature adjustment coal feeder described in the utility model as shown in Figure 1, it comprises body of heater 1, is arranged on fire door 2 and hot exhanst gas outlet 3 on the described body of heater 1, in the present embodiment, described fire door 2 is arranged on an end of described body of heater 1, and described hot exhanst gas outlet 3 is arranged on the other end of described body of heater 1 accordingly; Be provided with fiery chamber 5 and flue 4 in described body of heater 1 inside, described fiery chamber 5 communicates with described hot exhanst gas outlet 3 by described flue 4, and in the present embodiment, described fiery chamber 5 arranges near described fire door 2, and described flue 4 arranges away from described fire door 2; Also be provided with metering temperature adjustment coal feeder, described metering temperature adjustment coal feeder comprises thermal detector 6, control system and metering feeder 7; Be provided with in the described control system for storing temperature threshold value T
0 Temperature threshold memory 9, the first controller 10 and second controller 11; Be provided with velocity sensor 12, weight sensor 13 on the described metering feeder 7; Described thermal detector 6 is arranged on described hot exhanst gas outlet 3 places; Described thermal detector 6 is connected with described the first controller 10 respectively with temperature threshold memory 9, and described the first controller 10 receives the temperature value that described thermal detector 6 records, the temperature threshold T that carries with described temperature threshold memory 9 simultaneously
0Compare, when the temperature value that records less than described temperature threshold T
0The time theory of computation coal-supplying amount; For the ease of measuring, in the present embodiment, the furnace wall that described thermal detector 6 runs through described body of heater 1 arranges, and described thermal detector 6 is exposed to body of heater 1 outer part and is connected with described the first controller 10; Described the first controller 10 is connected with second controller 11, described velocity sensor 12, weight sensor 13 are connected with described second controller 11, the information that described second controller 11 is carried according to described weight sensor 13 and velocity sensor 12 obtains actual coal-supplying amount, and compares with theoretical coal-supplying amount that described the first controller 10 transmits; Described second controller 11 also is connected with described fire door 2, metering feeder 7, and described second controller 11 is controlled the beginning of the opening and closing of described fire door 2 and coal supply according to the comparative result of described actual coal-supplying amount and theoretical coal-supplying amount and stopped; Described metering feeder 7 also is provided with conveyer belt 8, and along the transmission direction of described conveyer belt 8, the end of described conveyer belt 8 is positioned at and described fire door 2 contacted positions, is used for adding fuel to described fiery chamber 5.
Said apparatus is when operation, and after the flue-gas temperature by the hot exhanst gas outlet of thermal detector 6 mensuration 3 places, thermal detector 6 flows to the temperature threshold T that the first controller 10, the first controllers 10 are transferred temperature threshold memory 9 with the temperature value T that measures
0Compare, when T less than T
0The time, the first controller 10 is according to both difference theory of computation coal-supplying amounts, and theoretical coal-supplying amount is transferred to second controller 11; Fire door 2 is opened in second controller 11 controls, and simultaneously control metering feeder 7 by conveyer belt 8 coal in the chamber 5 that begins to warm oneself in front of a fire, the velocity sensor 12 of metering feeder 7 and weight sensor 13 are transferred to second controller 11 with coal speed and each coal gravimetry value respectively, calculate actual coal-supplying amount by second controller 11, and compare with theoretical coal-supplying amount that the first controller 10 transmits, when actual coal-supplying amount reaches theoretical coal-supplying amount, second controller 11 control metering feeders 7 stop coal, and fire door 2 is closed in control, thermal detector 6 is proceeded to measure afterwards, repeats said process.
On this basis, for the ease of observing the difference of theoretical coal-supplying amount and actual coal-supplying amount, thereby the better operation of control appliance, as shown in Figure 2, also be provided with display 14, described display 14 is connected with second controller 11 with described the first controller 10 respectively, is used for showing described theoretical coal-supplying amount and actual coal-supplying amount.
Further, in order in time to replenish coal charge, also comprise storage tank 15, described storage tank 15 is connected with described metering feeder 7, such as Fig. 3.
Because the calorific value of coal is along with quality can change, in order to hold the actual calorific value of each batch coal, thereby accurate theory of computation coal-supplying amount, make actual coal-supplying amount more near actual needs, guarantee the temperature of high-temperature flue gas, as shown in Figure 4, also comprise coal heating-value determination instrument 16, described coal heating-value determination instrument 16 is connected with described the first controller 10, described storage tank 15 respectively, be used for measuring the calorific value of described storage tank 15 coals and flowing to described the first controller 10, as the parameter of theory of computation coal-supplying amount.
On the basis of the above, as transformable embodiment, in order to prevent that the flames in the fiery chamber 5 from being scurried in the drying device by hot exhanst gas outlet 3, cause the danger of coal combustion or device explosion, be provided with the gear flame board that is connected with described body of heater 1 inwall at described flue 4.
Further, as shown in Figure 5, described gear flame board comprises the first gear flame board 17 and the second gear flame board 18, described the first gear flame board 17 and the second gear flame board 18 be arranged in parallel at described flue 4, the upper end of described the first gear flame board 17 is connected with the inwall of described body of heater 1, the lower end of described the second gear flame board 18 is connected with the inwall of described body of heater 1, and the upper end of described the second gear flame board 18 is free end; Has the passage that is suitable for the flue gas circulation between described the first gear flame board 17 and the second gear flame board 18; Perpendicular to described flue 4 axially, described the first gear flame board 17 and the second gear flame board 18 have interlaced area.In the present embodiment, the lower end of described the first gear flame board 17 apart from the distance of described flue 4 bottoms more than or equal to described flue 4 tops to 1/5 of distance from bottom, the upper end of described the second gear flame board 18 apart from the distance at described flue 4 tops more than or equal to described flue 4 tops to 1/5 of distance from bottom, the spacing that described the first gear flame board 17 and second keeps off flame board 18 more than or equal to described flue 4 tops to 1/5 of distance from bottom.
Preferably, described the first gear flame board 17, second keeps off flame board 18 perpendicular to the inwall of described body of heater 1.
The operational process of said apparatus is measured by thermal detector 6 after the flue-gas temperature at hot exhanst gas outlet 3 places as shown in Figure 6, and thermal detector 6 flows to the temperature threshold T that the first controller 10, the first controllers 10 are transferred temperature threshold memory 9 with the temperature value T that measures
0Compare, when T less than T
0The time, the first controller 10 is according to both difference theory of computation coal-supplying amounts, wherein employed coal calorific value is measured by the coal in 16 pairs of storage tanks 15 of coal heating-value determination instrument and is sent numerical value to will determine after the first controller 10, the first controllers 10 calculate theoretical coal-supplying amount and is transferred to second controller 11; Fire door 2 is opened in second controller 11 controls, and simultaneously control metering feeder 7 begins the coal charge in the storage tank 15 is added in the fiery chamber 5 by conveyer belt 8, velocity sensor 12 and the weight sensor 13 of metering feeder 7 are transferred to measured value respectively second controller 11, calculate actual coal-supplying amount by second controller 11, and compare with theoretical coal-supplying amount that the first controller 10 transmits, when actual coal-supplying amount reaches theoretical coal-supplying amount, second controller 11 control metering feeders 7 stop coal, and fire door 2 is closed in control, thermal detector 6 is proceeded to measure afterwards, repeat said process, in whole process, display 14 dynamically shows the value of theoretical coal-supplying amount and actual coal-supplying amount.Adjusting the coal amount according to the temperature of flue gas like this can be adjusted at the temperature of flue gas in the suitable scope, guarantees that flue gas is to the drying effect of material.
Above-mentioned metering feeder 7 can be any commercially available metering feeder 7.Described metering feeder 7 generally is comprised of conveyer belt 8, roller, carrying roller, velocity sensor 12 and weight sensor 13, described conveyer belt 8 is propped up by described roller and described carrying roller, described velocity sensor 12 is installed on the axle of described roller, and described weight sensor 13 is connected with described conveyer belt 8.
Although the utility model has carried out detailed elaboration by above-mentioned specific embodiment to it; but; those skilled in the art should be understood that; the any form that does not exceed the claim protection domain of making on this basis and the variation of details all belong to the claimed scope of the utility model.
Claims (7)
1. the boiler with metering temperature adjustment coal feeder comprises,
Body of heater (1) is arranged on fire door (2) and hot exhanst gas outlet (3) on the described body of heater (1);
Be provided with fiery chamber (5) and flue (4) in described body of heater (1) inside, described fiery chamber (5) communicates with described hot exhanst gas outlet (3) by described flue (4);
It is characterized in that,
Also be provided with metering temperature adjustment coal feeder, described metering temperature adjustment coal feeder comprises thermal detector (6), control system and metering feeder (7);
Be provided with in the described control system for storing temperature threshold value T
0Temperature threshold memory (9), the first controller (10) and second controller (11); Be provided with velocity sensor (12), weight sensor (13) on the described metering feeder (7);
Described thermal detector (6) is arranged on described hot exhanst gas outlet (3) and locates; Described thermal detector (6) is connected with described the first controller (10) respectively with temperature threshold memory (9), and described the first controller (10) receives the temperature threshold T that temperature value that described thermal detector (6) records and described temperature threshold memory (9) are carried
0And compare, be used at the temperature value that records less than described temperature threshold T
0The time theory of computation coal-supplying amount and output;
Described the first controller (10) is connected with second controller (11), described velocity sensor (12), weight sensor (13) is connected with described second controller (11), described second controller (11) also with described fire door (2), metering feeder (7) is connected, described second controller (11) goes out actual coal-supplying amount according to the information calculations of described weight sensor (13) and velocity sensor (12) conveying, and compare with theoretical coal-supplying amount that described the first controller (10) is carried, obtain be used to the opening and closing of controlling described fire door (2), and the beginning of coal supply and the control information that stops and output;
Described metering feeder (7) also is provided with conveyer belt (8), and along the transmission direction of described conveyer belt (8), the end of described conveyer belt (8) is positioned at and the contacted position of described fire door (2), is used for to described fiery chamber (5) interpolation fuel.
2. boiler according to claim 1, it is characterized in that, also be provided with display (14), described display (14) is connected with second controller (11) with described the first controller (10) respectively, is used for showing described theoretical coal-supplying amount and actual coal-supplying amount.
3. boiler according to claim 1 and 2 is characterized in that, also comprises storage tank (15), and described storage tank (15) is connected with described metering feeder (7).
4. boiler according to claim 3, it is characterized in that, also comprise coal heating-value determination instrument (16), described coal heating-value determination instrument (16) is connected with described the first controller (10), described storage tank (15) respectively, is used for measuring the calorific value of described storage tank (15) coal and flowing to described the first controller (10).
5. according to claim 1 and 2 or 4 described boilers, it is characterized in that, be provided with the gear flame board that is connected with described body of heater (1) inwall at described flue (4).
6. boiler according to claim 5, it is characterized in that, described gear flame board comprises the first gear flame board (17) and the second gear flame board (18), described the first gear flame board (17) and the second gear flame board (18) be arranged in parallel at described flue (4), the upper end of described the first gear flame board (17) is connected with the inwall of described body of heater (1), and the lower end of described the second gear flame board (18) is connected with the inwall of described body of heater (1); Has the passage that is suitable for the flue gas circulation between described the first gear flame board (17) and the second gear flame board (18); Perpendicular to described flue (4) axially, described the first gear flame board (17) and second keeps off flame board (18) and has interlaced area.
7. boiler according to claim 6 is characterized in that, described the first gear flame board (17) and the inwall of the second gear flame board (18) perpendicular to described body of heater (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343081 CN202813343U (en) | 2012-07-16 | 2012-07-16 | Boiler with metering thermostatic coal-feed unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343081 CN202813343U (en) | 2012-07-16 | 2012-07-16 | Boiler with metering thermostatic coal-feed unit |
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| CN202813343U true CN202813343U (en) | 2013-03-20 |
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| CN 201220343081 Expired - Fee Related CN202813343U (en) | 2012-07-16 | 2012-07-16 | Boiler with metering thermostatic coal-feed unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542401A (en) * | 2012-07-16 | 2014-01-29 | 鄂尔多斯市中誉能源股份有限公司 | Boiler with measuring thermoregulation coal feeding device |
| CN114484868A (en) * | 2022-01-17 | 2022-05-13 | 芜湖市通达锅炉有限公司 | Boiler feeding and pipe replacing device |
-
2012
- 2012-07-16 CN CN 201220343081 patent/CN202813343U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542401A (en) * | 2012-07-16 | 2014-01-29 | 鄂尔多斯市中誉能源股份有限公司 | Boiler with measuring thermoregulation coal feeding device |
| CN114484868A (en) * | 2022-01-17 | 2022-05-13 | 芜湖市通达锅炉有限公司 | Boiler feeding and pipe replacing device |
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Granted publication date: 20130320 Termination date: 20160716 |
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