CN202066869U - Intelligent online pulverized coal measuring device - Google Patents
Intelligent online pulverized coal measuring device Download PDFInfo
- Publication number
- CN202066869U CN202066869U CN2010206633518U CN201020663351U CN202066869U CN 202066869 U CN202066869 U CN 202066869U CN 2010206633518 U CN2010206633518 U CN 2010206633518U CN 201020663351 U CN201020663351 U CN 201020663351U CN 202066869 U CN202066869 U CN 202066869U
- Authority
- CN
- China
- Prior art keywords
- pressure
- backing tube
- temperature
- transmitter
- wind powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model relates to a measuring instrument, in particular to an intelligent online pulverized coal measuring device, which comprises two pressure taking backrest tubes, a differential pressure transmitter junction box and a mounting base. The pressure taking backrest tubes pass through the differential pressure transmitter junction box and the mounting base, the middle of each pressure taking backrest tube is welded to a flange plate which is fixedly connected to the mounting base 7 through bolts, a concentration measuring probe and a temperature measuring probe are welded to the flange plate, measuring ends of the concentration measuring probe and the temperature measuring probe are inserted into a detected pipeline, the temperature measuring probe is provided with a temperature transmitter, the pressure taking backrest tubes and the differential pressure transmitter junction box form a pulverized coal flow speed measuring loop, the temperature measuring probe and the temperature transmitter form a pulverized coal temperature measuring loop, and the pulverized coal flow speed measuring loop, the pulverized coal temperature measuring loop and the concentration measuring probe are in parallel connection.
Description
Technical field
The utility model relates to a kind of surveying instrument, especially a kind of intelligent wind powder on-line measurement device.
Background technology
The best combustion of pulverized coal firing boiler needs a certain proportion of coal dust and air.When coal powder density is too high, the coal dust plugging easily takes place, can not be in stove pulverized coal conveying with to causing that also spontaneous combustion of pulverized coal burns out duff pipe in the pipe; Secondly, coal dust firing is incomplete, coal dust after-flame difficulty, and efficient is low, and carbon monoxide increases, the high temperature corrosion of aggravation boiler furnace internal heating surface and superheater surface; In addition, also cause the local slagging scorification of burner hearth and superheater easily, have a strong impact on the safe operation of boiler.Cross when low when coal powder density, fire box temperature and boiler pressure reduce, and the burner hearth fire extinguishing easily takes place; Secondly, can produce a large amount of oxides of nitrogen, contaminated air; In addition, the low boiler band of air pressure is not gone up load, must improve the duff pipe flow velocity in order to improve air pressure, and burner hearth is cut skew burner hearth center, garden, causes the local slagging scorification of furnace wall, and back-end surfaces cigarette temperature deviation is excessive, easily causes booster.Therefore, but pulverized coal firing boiler the time must have the monitoring device of a kind of on-line measurement coal powder density and wind speed in burning.
At present, the instrument of pulverized coal flow and concentration in the existing relevant continuous measuring tube, but there is following defective in existing in actual use instrumentation: the first, coal dust is a graininess, and flow velocity is fast again, causes measuring sonde just to be worn in the short time or grinds away; The second, because measuring media is a coal dust, measuring sonde and differential pressure transmitter respectively are autonomous device simultaneously, and it is big to measure connecting pipe length, and coal dust very easily stops up measurement mechanism and measures connecting pipe; The 3rd, can not revise of the influence of wind powder temperature automatically to wind powder speed, measuring accuracy is low.
The utility model content
The purpose of this utility model is to have proposed a kind of intelligent wind powder on-line measurement device, it is simple in structure, and is easy for installation, has realized the cleaning certainly to materials such as dust, can also carry out intelligent online to wind powder speed, temperature and concentration in addition and measure, and the measuring accuracy height.
The utility model is to adopt following technical scheme to realize: a kind of intelligent wind powder on-line measurement device, comprise that two draw the pressure backing tube, differential pressure transmitter terminal box and mounting seat, the pressure backing tube runs through differential pressure transmitter terminal box and mounting seat, fixedly connected with the transmitter terminal box in the upper end of pressure backing tube, be provided with differential pressure transmitter in the transmitter terminal box, the middle part of pressure backing tube is welded on the ring flange, ring flange is fixedlyed connected with mounting seat 7 by bolt, wherein, be welded with measurement of concetration probe and temperature measurement probe on the described ring flange, the measuring junction of measurement of concetration probe and temperature measurement probe inserts in the tested pipeline, temperature measurement probe is provided with temperature transmitter, pressure backing tube and differential pressure transmitter are formed the wind powder flow rate and are measured the loop, temperature measurement probe and temperature transmitter are formed wind powder temperature survey loop, and the wind powder flow rate is measured the loop, between wind powder temperature survey loop and the measurement of concetration probe for being connected in parallel.
In the utility model, described differential pressure pick-up and differential pressure transmitter are integral structure.
The top of described pressure backing tube is provided with pressure guiding pipe, the two ends of pressure guiding pipe are communicated with the pressure backing tube respectively, the middle part of pressure guiding pipe is provided with the measurement pressure-inducing nozzle, measuring pressure-inducing nozzle is connected with differential pressure transmitter, the two ends of pressure guiding pipe are provided with screen pack with the place of connection of pressure backing tube, prevent that dust from entering the measurement pressure-inducing nozzle, the automatic ash removing rod is set in the pressure backing tube, the top of automatic ash removing rod is fixed on the pressure backing tube nut, pressure backing tube nut is fixedlyed connected with the top of pressure backing tube, and the automatic ash removing rod comprises steel wire, the abutment ring and the vibration bloom that is positioned at automatic ash removing rod bottom that connect each adjacent wires.
Described measurement of concetration probe comprises outside porcelain bushing and inner thermal resistance.Described temperature measurement probe comprises outside porcelain bushing and inner electrode.
The beneficial effects of the utility model are: by increase measurement of concetration probe and temperature measurement probe on this device, make this device when measuring wind powder speed, can measure the concentration and the temperature of wind powder, simultaneously separately independently measuring sonde unit and transmitter unit be set to one, realized that the intelligent online of wind powder is measured; Secondly,, temperature survey parameter and the common input microprocessor of fluid-velocity survey parameter are handled, revised the influence of temperature convection speed automatically, improved measuring accuracy by increasing wind powder temperature survey loop; In addition,, can will clean automatically, need not to purge, solve the easy blocking problem of medium such as dust, be convenient to safeguard the dust in the pressure backing tube by the automatic ash removing rod is set.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of pressure backing tube;
Fig. 3 is the structural representation of automatic ash removing rod;
Fig. 4 is a principle of work synoptic diagram of the present utility model.
Among the figure: 1, pressure backing tube; 2, differential pressure transmitter terminal box; 3, ring flange; 4, temperature measurement probe; 5, automatic ash removing rod; 6, measurement of concetration probe; 7, mounting seat; 8, pressure guiding pipe; 9, measure pressure-inducing nozzle; 10. pressure backing tube nut; 11, steel wire; 12, abutment ring; 13, vibration bloom.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 to Fig. 4 is an intelligent wind powder on-line measurement device described in the utility model.This device comprises pressure backing tube 1, differential pressure transmitter terminal box 2 and mounting seat 7.Pressure backing tube 1 runs through differential pressure transmitter terminal box 2 and mounting seat 7, and fixedlying connected with transmitter terminal box 2 in the upper end of pressure backing tube 1, is provided with differential pressure transmitter in the transmitter terminal box 2, and wherein differential pressure pick-up and differential pressure transmitter are integral structure.The middle part of pressure backing tube 1 is welded on the ring flange 3, and ring flange 3 is fixedlyed connected with mounting seat 7 by bolt, thereby pressure backing tube 1 is fixedlyed connected with mounting seat 7.Mounting seat 7 is welded on the tested process pipe, thereby the lower end of pressure backing tube 1 is inserted in the tested process pipe, and the flow velocity of the interior wind powder of measuring channel.Be welded with measurement of concetration probe 6 and temperature measurement probe 4 simultaneously on the ring flange 3, the measuring junction of measurement of concetration probe 6 and temperature measurement probe 4 also inserts in the tested process pipe, respectively the concentration and the temperature of wind powder in the pipeline is measured.Measurement of concetration probe 6 comprises outside porcelain bushing and inner thermal resistance, and temperature measurement probe 4 comprises outside porcelain bushing and inner electrode.Measurement of concetration probe 6 by signal transmission wire be connected with switch board respectively, be digital signal or simulating signal with the electrical signal conversion that records, thereby measure the concentration and the temperature of wind powder.Temperature measurement probe 4 is provided with temperature transmitter, in the direct input temp transmitter of the temperature signal that temperature measurement probe 4 records.Described porcelain bushing can adopt the wear-resisting sheath of corundum.
The structure of pressure backing tube 1 as shown in Figure 2, the top of this pipe is provided with pressure guiding pipe 8, the two ends of pressure guiding pipe 8 are communicated with pressure backing tube 1 respectively, the middle part of pressure guiding pipe 8 is provided with measures pressure-inducing nozzle 9, measures pressure-inducing nozzle 9 and is connected with differential pressure transmitter.The two ends of pressure guiding pipe 8 are provided with screen pack with the place of connection of pressure backing tube 1, prevent that dust from entering measurement pressure-inducing nozzle 9, have guaranteed the measuring accuracy and the serviceable life of differential pressure transmitter, have reduced maintenance workload simultaneously.Be provided with two in this device and draw pressure backing tube 1, wherein one draw and press back of the body pipe and be used to measure total head, other one is used to measure static pressure, and the differential pressure of total head and static pressure is imported in the differential pressure transmitter, according to the corresponding relation of differential pressure and wind speed, measure wind speed in the pipe exactly.
Automatic ash removing rod 5 is set in the pressure backing tube 1, the top of automatic ash removing rod 5 is fixed on the pressure backing tube nut 10, fixedly connected by screw thread or other modes between pressure backing tube nut 10 and the pressure backing tube 1, thereby automatic ash removing rod 5 is suspended in the pressure backing tube 1.Automatic ash removing rod 5 comprises multistage steel wire 11, connect the abutment ring of each adjacent wires 11 and be positioned at the vibration bloom 13 of automatic ash removing rod 5 bottoms.By automatic ash removing rod 5 swinging back and forth in air pressure backing tube 1, can prevent the dust plugging effectively.
In the utility model, pressure backing tube 1 is formed the wind powder flow rate with differential pressure transmitter and is measured the loop, temperature measurement probe 4 is formed wind powder temperature survey loop with temperature transmitter, the wind powder flow rate is measured between loop, wind powder temperature survey loop and the measurement of concetration probe 6 to being connected in parallel, its apoplexy powder flow rate is measured the flow velocity that the loop is used to measure the wind powder, wind powder temperature survey loop is used to measure the temperature of wind powder, and measurement of concetration probe 6 is used to measure the concentration of wind powder.When measuring the wind powder flow rate, wind powder flow rate Δ S is among the pressure backing tube 1 input pressure difference transmitter ST through differential pressure pickup SE, wind powder temperature Δ T is temperature measurement probe 4 and temperature transmitter TT output 4-20mA dc current signal through temperature sensor TE, give the computing of the microprocessor among the differential pressure transmitter ST, automatically compensation temperature is to the influence of wind powder flow rate, through the 4-20mA dc current signal of computing output, give user access and show the wind powder flow rate.Therefore, can realize measurement simultaneously by this device to wind powder speed, temperature and concentration.
Claims (5)
1. intelligent wind powder on-line measurement device, comprise that two draw pressure backing tube (1), differential pressure transmitter terminal box (2) and mounting seat (7), pressure backing tube (1) runs through differential pressure transmitter terminal box (2) and mounting seat (7), fixedly connected with transmitter terminal box (2) in the upper end of pressure backing tube (1), the transmitter terminal box is provided with differential pressure transmitter in (2), the middle part of pressure backing tube (1) is welded on the ring flange (3), ring flange (3) is fixedlyed connected with mounting seat (7) by bolt, it is characterized in that: be welded with measurement of concetration probe (6) and temperature measurement probe (4) on the described ring flange (3), the measuring junction of measurement of concetration probe (6) and temperature measurement probe (4) inserts in the tested pipeline, temperature measurement probe is provided with temperature transmitter on (4), pressure backing tube (1) is formed the wind powder flow rate with differential pressure transmitter and is measured the loop, temperature measurement probe (4) is formed wind powder temperature survey loop with temperature transmitter, and the wind powder flow rate is measured the loop, wind powder temperature survey loop and measurement of concetration are popped one's head between (6) to being connected in parallel.
2. intelligent wind powder on-line measurement device according to claim 1, it is characterized in that: described differential pressure transmitter and differential pressure pick-up are integral structure.
3. intelligent wind powder on-line measurement device according to claim 1, it is characterized in that: the top of described pressure backing tube (1) is provided with pressure guiding pipe (8), the two ends of pressure guiding pipe (8) are communicated with pressure backing tube (1) respectively, the middle part of pressure guiding pipe (8) is provided with measures pressure-inducing nozzle (9), measuring pressure-inducing nozzle (9) is connected with differential pressure transmitter, the two ends of pressure guiding pipe (8) are provided with screen pack with the place of connection of pressure backing tube (1), automatic ash removing rod (5) is set in the pressure backing tube (1), the top of automatic ash removing rod (5) is fixed on the pressure backing tube nut (10), pressure backing tube nut (10) is fixedlyed connected with the top of pressure backing tube (1), and automatic ash removing rod (5) comprises steel wire (11), the abutment ring and the vibration bloom (13) that is positioned at automatic ash removing rod (5) bottom that connect each adjacent wires (11).
4. intelligent wind powder on-line measurement device according to claim 1 is characterized in that: described measurement of concetration probe (6) comprises outside porcelain bushing and inner thermal resistance.
5. intelligent wind powder on-line measurement device according to claim 1 is characterized in that: described temperature measurement probe (4) comprises outside porcelain bushing and inner electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206633518U CN202066869U (en) | 2010-12-16 | 2010-12-16 | Intelligent online pulverized coal measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206633518U CN202066869U (en) | 2010-12-16 | 2010-12-16 | Intelligent online pulverized coal measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066869U true CN202066869U (en) | 2011-12-07 |
Family
ID=45060729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206633518U Expired - Fee Related CN202066869U (en) | 2010-12-16 | 2010-12-16 | Intelligent online pulverized coal measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066869U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809666A (en) * | 2012-08-06 | 2012-12-05 | 上海电力建设启动调整试验所 | Measuring device for wind speed of pulverized coal pipeline |
| CN105842006A (en) * | 2016-05-11 | 2016-08-10 | 中国大唐集团科学技术研究院有限公司华东分公司 | Primary air dust pipe monitoring sampling device and accurate sampling control method for sampling pipe of primary air dust pipe monitoring sampling device |
| CN105953855A (en) * | 2016-06-22 | 2016-09-21 | 武金玉 | Anti-blockage differential pressure flowmeter |
| CN106052895A (en) * | 2016-05-06 | 2016-10-26 | 胡柳新 | Thermal resistor of temperature measurement |
-
2010
- 2010-12-16 CN CN2010206633518U patent/CN202066869U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809666A (en) * | 2012-08-06 | 2012-12-05 | 上海电力建设启动调整试验所 | Measuring device for wind speed of pulverized coal pipeline |
| CN106052895A (en) * | 2016-05-06 | 2016-10-26 | 胡柳新 | Thermal resistor of temperature measurement |
| CN105842006A (en) * | 2016-05-11 | 2016-08-10 | 中国大唐集团科学技术研究院有限公司华东分公司 | Primary air dust pipe monitoring sampling device and accurate sampling control method for sampling pipe of primary air dust pipe monitoring sampling device |
| CN105953855A (en) * | 2016-06-22 | 2016-09-21 | 武金玉 | Anti-blockage differential pressure flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203981700U (en) | Dust through-current capacity pick-up unit | |
| CN202066869U (en) | Intelligent online pulverized coal measuring device | |
| CN201555612U (en) | Self-deashing rectifier type cross section air quantity and air speed measuring device | |
| CN202420572U (en) | Multipoint cross section type air quantity measuring device | |
| CN202582596U (en) | System for integrally measuring air quantity, concentration, and granularity | |
| CN102749474A (en) | Flow rate and particle concentration measuring system and flow rate and particle concentration measuring method | |
| CN201259506Y (en) | Primary wind speed measurement device for burning coal powder boiler | |
| CN204789462U (en) | Buggy concentration and velocity of flow on line measurement system in one time tuber pipe is said | |
| CN201032160Y (en) | Boiler wind powder online monitoring device | |
| CN110487337A (en) | A kind of flow sensor of plug-in type semi-parabolic multiple spot pressure | |
| CN2911458Y (en) | Secondary air on-line monitoring system for boiler of power station | |
| CN203672406U (en) | Wind-pulverized coal on-line monitoring system used for boiler | |
| CN102095204A (en) | Boiler soot blowing control device based on flue fly ash mass flow | |
| CN201689106U (en) | Intelligent integral pulverized-coal flow rate sensor | |
| CN202710596U (en) | Flow velocity and particle concentration measuring system | |
| CN103822669A (en) | Pulverized coal online monitoring method of boiler | |
| CN203310854U (en) | Novel temperature compensation wind speed sensor | |
| CN206627145U (en) | A kind of gasification of biomass and coal-fired electric generation furnace coupled electricity-generation metering system for heat | |
| CN210268754U (en) | Plug-in type flow sensor for taking pressure from multiple points of semi-parabolic line | |
| CN201707076U (en) | Air quantity measuring device | |
| CN203069214U (en) | Anti-blocking abrasion-resisting wind speed flowmeter | |
| CN216816716U (en) | Coal fired boiler powder pipe wind speed measuring device | |
| CN212780873U (en) | Wind speed measuring device for measuring wind-powder mixed medium | |
| CN202649085U (en) | Coal powder density online monitoring system | |
| CN203881378U (en) | On-line monitoring device for flow of coal powder |
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: 20111207 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |