CN204008028U - A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device - Google Patents
A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device Download PDFInfo
- Publication number
- CN204008028U CN204008028U CN201420406996.1U CN201420406996U CN204008028U CN 204008028 U CN204008028 U CN 204008028U CN 201420406996 U CN201420406996 U CN 201420406996U CN 204008028 U CN204008028 U CN 204008028U
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- CN
- China
- Prior art keywords
- aspiration pump
- oxygen quantity
- cabinet
- heat exchanger
- zirconia oxygen
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 54
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 239000001301 oxygen Substances 0.000 claims abstract description 32
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 32
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 9
- 238000013459 approach Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device, its technical characteristics is: comprise Mersure Controler, two Sampling Interfaces, two zirconia oxygen quantity sensors and end aspiration pump, the input end of two Sampling Interfaces is connected on the gas approach and exhaust pass of heat interchanger by multiple spot gas sampling front end respectively, the output terminal of two Sampling Interfaces is connected with two zirconia oxygen quantity sensor smoke inlets on cabinet respectively, two zirconia oxygen quantity sensors are connected with end aspiration pump with Mersure Controler respectively, the control end of Mersure Controler is connected with end aspiration pump.The utility model is gathered flue gas oxygen content signal and is obtained measurement result by Mersure Controler by zirconia oxygen quantity sensor, overcome the gas leakage of end aspiration pump and caused the inaccurate problem of data, avoid the periodic calibration work of zirconia sensor, improve measuring accuracy, can be widely used in in-site measurement Industrial Boiler air heat exchanger air leakage coefficient.
Description
Technical field
The utility model belongs to boiler exam equipment technical field, especially a kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device.
Background technology
Industrial Boiler air heat exchanger is to utilize hot flue gas in the flue device to fresh cold air preheating.Under normal circumstances, flue gas is only the reduction of temperature after passing air heat exchanger.But, in the time there is gas leakage in air preheater, having part fresh air sneaks in flue gas, directly cause the oxygen content rising in flue gas to reduce overall heat exchange efficiency simultaneously, therefore, just can calculate the air leakage coefficient of air heat exchanger by measuring the difference of inlet and outlet air heat exchanger two ends flue gas oxygen content.
At present, the air leakage coefficient method of on-line measurement air heat exchanger is had relatively high expectations to two zirconia oxygen quantity sensors in device, must within the sensor life-time complete period, ensure symmetry and the stability of parameter, is often difficult for meeting.If use the zirconia sensor after can mating through paired screening and calibrate under laboratory condition, select again suitable measurement frequency (as: biweekly) in-site measurement air leakage coefficient, can greatly improve the accurate degree of measurement, if but adopt the mode of the on-the-spot periodic calibration of sensor, not only increase precision that plant maintenance amount, maintenance cost can't guarantee to measure, reliable.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of measuring accuracy high, easy to use and save the Portable industrial boiler air heat exchanger air leakage coefficient measuring device of measurement expense.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device, comprise Mersure Controler, two Sampling Interfaces, through two zirconia oxygen quantity sensors and the end aspiration pump of paired screening, the input end of two Sampling Interfaces is connected on the gas approach and exhaust pass of heat interchanger by multiple spot gas sampling front end respectively, the output terminal of two Sampling Interfaces is connected with two zirconia oxygen quantity sensor smoke inlets on cabinet respectively, two zirconia oxygen quantity sensors are connected with end aspiration pump with Mersure Controler respectively, the control end of Mersure Controler is connected with end aspiration pump and realizes the air extracting function to flue end, described Mersure Controler comprises the circuit of measurement and control in cabinet and cabinet, handle is installed on cabinet, on cabinet, be provided with display screen and be connected with operation push-button and with circuit of measurement and control, the through hole that two zirconia oxygen quantity sensors are shaped with by thermal insulation board in cabinet with end aspiration pump is connected with circuit of measurement and control.
And described circuit of measurement and control is made up of single-chip microcomputer and peripheral circuit thereof, single-chip microcomputer and peripheral circuit thereof are connected with operation push-button with two zirconia oxygen quantity sensors, end aspiration pump, display screens respectively.
Advantage of the present utility model and good effect are:
1, the utility model is sampled respectively to the smoke inlet of portable cabinet on heat exchanger entrance flue and exhaust pass, gather flue gas oxygen content signal and obtain measurement result by Mersure Controler by zirconia oxygen quantity sensor, overcome the gas leakage of measuring process end aspiration pump and caused the inaccurate problem of data, improve measuring accuracy, can be widely used in in-site measurement Industrial Boiler air heat exchanger air leakage coefficient.
2, the utility model adopts non-on-line measurement mode, can ensure symmetry and the stability of two zirconia oxygen quantity sensor parameters, avoid the periodic calibration work of zirconia sensor, met the frequency of measurement and the accuracy of measurement, saved measurement expense and can avoid safeguarding.
3, the utility model arranges display screen and operation push-button on Mersure Controler cabinet, and display measurement data can easily measurement function be arranged and be controlled intuitively, for on-the-spot measurement of oxygen content provides convenience with comparing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic appearance of Mersure Controler.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device, as shown in Figures 1 and 2, comprise Mersure Controler, two Sampling Interfaces, through two zirconia oxygen quantity sensors and the end aspiration pump of paired screening, the input end of two Sampling Interfaces is connected on the gas approach and exhaust pass of heat interchanger by multiple spot gas sampling front end respectively, the output terminal of two Sampling Interfaces is connected with two zirconia oxygen quantity sensor smoke inlets on cabinet respectively, two zirconia oxygen quantity sensors are connected with end aspiration pump with Mersure Controler respectively, this end aspiration pump is connected to measures gas circuit end, the control end of Mersure Controler is connected with end aspiration pump and controls end aspiration pump flue end is bled.Described Mersure Controler comprises the circuit of measurement and control in cabinet 1 and cabinet, handle 2 is installed on cabinet, on cabinet, being provided with display screen 3 is connected with operation push-button 4 and with circuit of measurement and control, the through hole that 5, two zirconia oxygen quantity sensors of two smoke inlets are shaped with by thermal insulation board in cabinet with end aspiration pump is set on cabinet to be connected with circuit of measurement and control.
In the present embodiment, circuit of measurement and control is made up of single-chip microcomputer and peripheral circuit thereof, single-chip microcomputer and peripheral circuit thereof are connected with operation push-button with two zirconia oxygen quantity sensors, end aspiration pump, display screens respectively, and it is corresponding oxygen content value the air leakage coefficient that calculates accordingly air preheater that single-chip microcomputer is responsible for measuring by the calculated signals of zirconia sensor.
Principle of work of the present utility model is: the sampling spot of selecting boiler smoke heat exchanger entrance and outlet, two Sampling Interfaces are connected with the sampling spot of outlet with flue gas heat-exchange unit entrance by multiple spot gas sampling front end, circuit of measurement and control control end aspiration pump sucks zirconia oxygen quantity sensor by flue gas and alternately measures the oxygen content of entrance and outlet, in measuring process, keep the negative pressure of end aspiration pump to be greater than flue negative pressure.Under temperature constant state, calculate random oxygen content of smoke gas and air leakage coefficient by circuit of measurement and control, meanwhile, watch surveyed parameter (air leakage coefficient, air leak rate of air curtain %, oxygen content of smoke gas %, sensor temperature DEG C) by display screen; Carry out corresponding parameter setting and operational order control by operation push-button; In addition, circuit of measurement and control can also be printed driving circuit by one and connect printer, realizes the printing function of measurement result by printer.
It is emphasized that; embodiment described in the utility model is illustrative; instead of determinate; therefore the utility model comprises and is not limited to the embodiment described in embodiment; every other embodiments that drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope that the utility model is protected equally.
Claims (2)
1. a Portable industrial boiler air heat exchanger air leakage coefficient measuring device, it is characterized in that: comprise Mersure Controler, two Sampling Interfaces, through two zirconia oxygen quantity sensors and the end aspiration pump of paired screening, the input end of two Sampling Interfaces is connected on the gas approach and exhaust pass of heat interchanger by multiple spot gas sampling front end respectively, the output terminal of two Sampling Interfaces is connected with two zirconia oxygen quantity sensor smoke inlets on cabinet respectively, two zirconia oxygen quantity sensors are connected with end aspiration pump with Mersure Controler respectively, the control end of Mersure Controler is connected with end aspiration pump and realizes the air extracting function to flue end, described Mersure Controler comprises the circuit of measurement and control in cabinet and cabinet, handle is installed on cabinet, on cabinet, be provided with display screen and be connected with operation push-button and with circuit of measurement and control, the through hole that two zirconia oxygen quantity sensors are shaped with by thermal insulation board in cabinet with end aspiration pump is connected with circuit of measurement and control.
2. a kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device according to claim 1, it is characterized in that: described circuit of measurement and control is made up of single-chip microcomputer and peripheral circuit thereof, single-chip microcomputer and peripheral circuit thereof are connected with operation push-button respectively with through two zirconia oxygen quantity sensors, end aspiration pump, display screens of screening in pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406996.1U CN204008028U (en) | 2014-07-23 | 2014-07-23 | A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406996.1U CN204008028U (en) | 2014-07-23 | 2014-07-23 | A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008028U true CN204008028U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420406996.1U Active CN204008028U (en) | 2014-07-23 | 2014-07-23 | A kind of Portable industrial boiler air heat exchanger air leakage coefficient measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008028U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388258A (en) * | 2015-12-21 | 2016-03-09 | 中国神华能源股份有限公司 | Gas pipeline wind leakage apparatus and oxygen-rich combustion system |
| CN110285925A (en) * | 2019-06-19 | 2019-09-27 | 大唐郓城发电有限公司 | A kind of method of the low-level (stack-gas) economizer leak detection of fume afterheat deep exploitation system |
| CN111795872A (en) * | 2020-07-14 | 2020-10-20 | 安阳工学院 | Air tightness monitoring device and method for monitoring waste gas sampling process |
-
2014
- 2014-07-23 CN CN201420406996.1U patent/CN204008028U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388258A (en) * | 2015-12-21 | 2016-03-09 | 中国神华能源股份有限公司 | Gas pipeline wind leakage apparatus and oxygen-rich combustion system |
| CN110285925A (en) * | 2019-06-19 | 2019-09-27 | 大唐郓城发电有限公司 | A kind of method of the low-level (stack-gas) economizer leak detection of fume afterheat deep exploitation system |
| CN111795872A (en) * | 2020-07-14 | 2020-10-20 | 安阳工学院 | Air tightness monitoring device and method for monitoring waste gas sampling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee after: State Grid Corporation of China Patentee after: State Grid Tianjin Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: State Grid Tianjin Electric Power Company |