CN204535785U - A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity - Google Patents
A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity Download PDFInfo
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- CN204535785U CN204535785U CN201520220416.4U CN201520220416U CN204535785U CN 204535785 U CN204535785 U CN 204535785U CN 201520220416 U CN201520220416 U CN 201520220416U CN 204535785 U CN204535785 U CN 204535785U
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- pitot tube
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Abstract
The utility model proposes a kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity, belong to Circulating Fluidized Bed Boiler experimental technique field.This system comprises V-type support, back up pad, back up pad contiguous block, pitot tube regulating block, pitot tube fixed block, data acquisition and controller, data acquisition line concentration, pitot tube regulating block control line, pitot tube fixed block control line, with the L-type pitot tube of scale and screw thread.When adopting the utility model to measure, Data Acquisition and Conversion System (DACS) can record measurement data automatically, and control to adjust the adjustment with positioning system, L-type pitot tube being carried out to position, pitot tube not easily fixing and testing crew unhandy problem when fully can solve circulation fluid bed boiler coal-feeding air flow calibration, realizes Quick Measurement and improves the object of measuring accuracy.
Description
Technical field
The utility model belongs to Circulating Fluidized Bed Boiler experimental technique field, particularly a kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity.
Background technology
Coal spread wind is also referred to as tertiary air, and its concept source is in spreader stoker boliler.Circulation fluid bed boiler coal-feeding wind action is the same with the coal spread wind of spreader stoker boliler, is coal supply is sowed more equably into burner hearth, makes in-furnace temperature field distribution more even, improves burning efficiency.Meanwhile, coal spread wind also plays the sealing function at coal feeding hole place.
Coal spread wind is in operation and suitably should regulates according to coal-burning particle, moisture and coal amount size, to ensure that coal is sowed evenly in bed, avoid, because the too little coal that makes of air quantity is deposited in coal feeding hole, causing an internal cause local temperature too high and coking, or reduce burning efficiency because coal grain burning is not thoroughly just discharged.
The size of coal spread wind air quantity can have an impact to the bed temperature characteristic of Circulating Fluidized Bed Boiler, and then may cause the uneven of Circulating Fluidized Bed Temperature, and bed temperature is within the specific limits uneven is acceptable, but senior general affects heat flux distribution in stove excessively.Meanwhile, the uneven of bed temperature also can cause wall temperature deviation and Temperature Deviation, thus affects boiler performance.Therefore, the coal spread wind air quantity of Circulating Fluidized Bed Boiler is demarcated, make the deviation of coal spread wind amount not cause bed temperature deviation, just seem very necessary.But in actual measurement process in the past, when adopting common L-type pitot tube to demarcate coal spread wind amount, it is vertical diametrically same that manual measurement often can not ensure that the position of pitot tube air inlet always can remain on, and measurement result often deviation is very large.Meanwhile, on-the-spot measurement environment is very undesirable, and testing crew usually needs to operate aloft, has certain Personal Risk.
Summary of the invention
The utility model determines site test measurement result deviation comparatively greatly for circulation fluid bed boiler coal-feeding weathercock, and testing crew measures the feature of inconvenience, proposes a kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity.This system adopts the mode automatically controlled, and regulates, and carries out the record of measurement data, realize the quick and precisely measurement of circulation fluid bed boiler coal-feeding wind air quantity to the position of L-type pitot tube.
The utility model is achieved in the following ways:
A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity, comprise V-type support, back up pad, back up pad contiguous block, pitot tube regulating block, pitot tube fixed block, data acquisition and controller, data acquisition line concentration, pitot tube regulating block control line, pitot tube fixed block control line, with the L-type pitot tube of scale and screw thread.It is characterized in that, V-type support and back up pad contiguous block are connected by two isometric back up pads; Pitot tube regulating block, with internal thread, is embedded among back shaft contiguous block; V-type support couples together by pitot tube fixed block, and is fixed by the L-type pitot tube with scale and screw thread; Data acquisition is connected by data acquisition line concentration with the L-type pitot tube of screw thread with scale with controller, data acquisition is connected by pitot tube regulating block control line with pitot tube regulating block with controller, and data acquisition is connected by pitot tube fixed block control line with pitot tube fixed block with controller.
The data acquisition of this system and controller can calculate the position of each measuring point automatically according to ring method of sections such as the pipe radius foundations inputted, pitot tube regulating block freely can rotate among back shaft contiguous block according to the control of data acquisition and controller, thus regulates the L-type pitot tube with scale and screw thread to move up and down; Meanwhile, pitot tube fixed block can ensure the air inlet of L-type pitot tube with scale and screw thread and the wind direction keeping parallelism always of coal spread wind, then the measurement data of each measuring point recorded by data acquisition and controller, realizes the quick and precisely measurement of circulation fluid bed boiler coal-feeding wind air quantity.
Accompanying drawing explanation
Fig. 1 is a kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is the enlarged diagram of part A in Fig. 1.
In figure: 1-V type support; 2-back up pad; 3-back up pad contiguous block; 4-pitot tube regulating block; 5-pitot tube fixed block; 6-data acquisition and controller; 7-data acquisition line concentration; 8-pitot tube regulating block control line; 9-pitot tube fixed block control line; 10-is with the L-type pitot tube of scale and screw thread.
Embodiment
A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity, comprise V-type support, back up pad, back up pad contiguous block, pitot tube regulating block, pitot tube fixed block, data acquisition and controller, data acquisition line concentration, pitot tube regulating block control line, pitot tube fixed block control line, with the L-type pitot tube of scale and screw thread.It is characterized in that, V-type support and back up pad contiguous block are connected by two isometric back up pads; Pitot tube regulating block, with internal thread, is embedded among back shaft contiguous block; V-type support couples together by pitot tube fixed block, and is fixed by the L-type pitot tube with scale and screw thread; Data acquisition is connected by data acquisition line concentration with the L-type pitot tube of screw thread with scale with controller, data acquisition is connected by pitot tube regulating block control line with pitot tube regulating block with controller, and data acquisition is connected by pitot tube fixed block control line with pitot tube fixed block with controller.
The utility model determines site test measurement result deviation comparatively greatly for circulation fluid bed boiler coal-feeding weathercock, and testing crew measures the feature of inconvenience, proposes a kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity.This system adopts the mode automatically controlled, and regulates, and carries out the record of measurement data, realize the quick and precisely measurement of circulation fluid bed boiler coal-feeding wind air quantity to the position of L-type pitot tube.
When this utility model being applied to the coal spread wind air flow calibration site test of Circulating Fluidized Bed Boiler, the data acquisition of this system and controller can calculate the position of each measuring point automatically according to ring method of sections such as the pipe radius foundations inputted, pitot tube regulating block freely can rotate among back shaft contiguous block according to the control of data acquisition and controller, thus regulates the L-type pitot tube with scale and screw thread to move up and down; Meanwhile, pitot tube fixed block can ensure the air inlet of L-type pitot tube with scale and screw thread and the wind direction keeping parallelism always of coal spread wind, then the measurement data of each measuring point recorded by data acquisition and controller, realizes the quick and precisely measurement of circulation fluid bed boiler coal-feeding wind air quantity.
Claims (4)
1. the pitot tube system of an automatic Calibration circulation fluid bed boiler coal-feeding air quantity, this system comprises V-type support (1), back up pad (2), back up pad contiguous block (3), pitot tube regulating block (4), pitot tube fixed block (5), data acquisition and controller (6), data acquisition line concentration (7), pitot tube regulating block control line (8), pitot tube fixed block control line (9), with the L-type pitot tube (10) of scale and screw thread; It is characterized in that, V-type support (1) and back up pad contiguous block (3) are connected by two isometric back up pads (2); Pitot tube regulating block (4), with internal thread, is embedded among back shaft contiguous block (3); V-type support (1) couples together by pitot tube fixed block (5), and is fixed by the L-type pitot tube (10) with scale and screw thread; Data acquisition is connected by data acquisition line concentration (7) with the L-type pitot tube (10) of screw thread with scale with controller (6), data acquisition is connected by pitot tube regulating block control line (8) with pitot tube regulating block (4) with controller (6), and data acquisition is connected by pitot tube fixed block control line (9) with pitot tube fixed block (5) with controller (6).
2. the pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity according to claim 1, it is characterized in that, described data acquisition and controller (6) can calculate the position of each measuring point automatically according to the pipe radius inputted, adjusted by pitot tube regulating block (4) and pitot tube fixed block (5) position to pitot tube, then record the measurement data of each measuring point.
3. the pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity according to claim 1, it is characterized in that, described pitot tube regulating block (4) freely can be rotated among back up pad contiguous block (3) according to the control of data acquisition and controller (6), thus regulates the L-type pitot tube (10) with scale and screw thread to move up and down.
4. the pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity according to claim 1, it is characterized in that, described pitot tube fixed block (5) can ensure the air inlet of L-type pitot tube (10) with scale and screw thread and the wind direction keeping parallelism always of coal spread wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220416.4U CN204535785U (en) | 2015-04-14 | 2015-04-14 | A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220416.4U CN204535785U (en) | 2015-04-14 | 2015-04-14 | A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity |
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| Publication Number | Publication Date |
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| CN204535785U true CN204535785U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520220416.4U Expired - Fee Related CN204535785U (en) | 2015-04-14 | 2015-04-14 | A kind of pitot tube system of automatic Calibration circulation fluid bed boiler coal-feeding air quantity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899420A (en) * | 2021-09-09 | 2022-01-07 | 华电电力科学研究院有限公司 | Air volume calibration device based on backrest pipe and application method thereof |
-
2015
- 2015-04-14 CN CN201520220416.4U patent/CN204535785U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899420A (en) * | 2021-09-09 | 2022-01-07 | 华电电力科学研究院有限公司 | Air volume calibration device based on backrest pipe and application method thereof |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20150805 Termination date: 20160414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |