CN201754140U - Slurry density measuring system of flue gas desulfurization apparatus - Google Patents
Slurry density measuring system of flue gas desulfurization apparatus Download PDFInfo
- Publication number
- CN201754140U CN201754140U CN2010201226820U CN201020122682U CN201754140U CN 201754140 U CN201754140 U CN 201754140U CN 2010201226820 U CN2010201226820 U CN 2010201226820U CN 201020122682 U CN201020122682 U CN 201020122682U CN 201754140 U CN201754140 U CN 201754140U
- Authority
- CN
- China
- Prior art keywords
- valve
- slurry
- measuring
- pressure
- slurries
- 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 - Lifetime
Links
Images
Abstract
A measuring system capable of stably and accurately measuring density of slurry of a flue gas desulfurization apparatus comprises a slurry sample tube, a first pressure measuring point, a second pressure measuring point, a first valve, a second valve and a third valve. The first pressure measuring point and the second pressure measuring point are arranged in the slurry sample tube, the first valve and the second valve are respectively mounted on the lower portion of the slurry sample tube, and the third valve used for discharging slurry is mounted at the bottom of the slurry sample tube and connected with a trench pipeline. The system automatically and periodically samples measured slurry, leads the measured slurry to be static and stable, and realizes conversion by aid of pressure intensity (pressure) measurement to obtain density of the slurry. The slurry density measuring system flexibly meets field requirements according to two schemes in production field, avoids various shortages of the existing slurry density measuring systems for flue gas desulfurization apparatuses, has the advantages that the measuring system is accurate in measurement, long in service life, free of pipeline blockage, and free of factors affecting measurement accuracy or causing equipment being out of operation, is simple, practical, economical and accurate, and is low in maintenance workload and stable and reliable in operation.
Description
[technical field]
The utility model is used in the absorption tower, boiler units gas desulfurization island and other serosity density measurements.
[background technology]
At present, the fume desulfurating absorption tower serosity density measurement uses the more three kinds of metering systems that have, but all exist not enough, the needs of can not satisfy slurries density measurement system stable operation in the desulfuration absorbing tower, accurately measuring, the quality of uncontrollable desulfurization product gypsum influences the boiler emission smoke desulfurization efficiency:
1, Coriolis flowmeter density measurement.Shortcoming: press the definite flow of flowmeter request for utilization, cause line clogging, measure termination by flowmeter; Increase can be accelerated the flowmeter wearing and tearing by the flow of flowmeter, causes that measuring tube physical construction changes, the very fast damage of flowmeter, and the life-span is very short; Measuring principle is to influence the flowmeter resonant frequency by serum density, and the variation of vibration parameters is detected, and calculates serum density, carries out the physical quantity conversion, has the link of a plurality of generation errors.
2, differential pressure method density measurement.Shortcoming: this method is directly measured the serum density under stirrer in the absorption tower, slurry circulating pump, the oxidation fan running status, slurries in the absorption tower are under the suspended state at this moment, not the serum density under the stable state, big and deviation is changeable with the serum density deviation of actual needs; The differential pressure sampling line stops up easily, often causes to measure to stop.
3, gamma-rays radiation absorption mensuration density measurement.Shortcoming: the radiomaterial use certificate be arranged, limit its use; Surrounding environment is caused radioactive contamination, personnel are caused the radioactive radiation injury; Equipment and personnel must satisfy health bureau's radioactive source and use the supervision requirement; The stopple coupon encrustation influences measuring accuracy; Measuring principle is to utilize to pass through the different densities slurries to radiological dose decay difference, and the radiological dose behind the slurries is passed in detection, is converted into serum density, carries out the physical quantity conversion, has a plurality of generation error links.
[summary of the invention]
The utility model purpose is in order to solve the problem that existing measurement means can not satisfy slurries density measurement system stable operation in the desulfuration absorbing tower, accurately measure, a kind of flue gas desulfurization island serosity density measurement system is provided, the utility model uses original measurement means, automatic cycle measurement serum density, solved the inaccurate problem of measuring, solve blockage problem, solved short problem of life-span, solved use radioactive source problem.
The flue gas desulfurization island serosity density measurement system that the utility model provides, comprise a slurry samples pipe, be provided with first pressure-measuring-point 1 and superposed second pressure-measuring-point 2 that are positioned at the bottom in the slurry samples pipe, difference in height is H between two pressure-measuring-points, slurry samples pipe bottom is separately installed with first valve 1 that is connected with bottom, absorption tower or gypsum slurries extraction pump export pipeline and second valve 2 that is connected with the service water pipeline, slurry samples pipe bottom is equipped with the 3rd valve 3, the three valves 3 that are used for discharge slurry and connects row's trench pipeline.
The another kind of structure of the flue gas desulfurization island serosity density measurement system that the utility model provides, comprise a slurry samples pipe, the bottom is provided with first pressure-measuring-point (1) in the slurry samples pipe, the slurries height place that slurry samples pipe top is positioned at setting is provided with a bypass slurries run-down pipe, be respectively arranged with the first liquid level measuring point (1) and (2) two measuring points of the second liquid level measuring point in the slurries run-down pipe from bottom to top, slurry samples pipe bottom is separately installed with first valve (1) that is connected with bottom, absorption tower or gypsum slurries extraction pump export pipeline and second valve (2) that is connected with the service water pipeline, slurry samples pipe bottom is equipped with the 3rd valve (3) that is used for discharge slurry, and the 3rd valve (3) connects row's trench pipeline.
Measuring principle of the present utility model and measuring process: make a slurry samples pipe, automatically periodically the absorption tower gypsum slurries is charged into the slurry samples pipe, treat the pressure transmitter measurement slurries pressure of the stable back of slurries by installing on the slurry samples pipe, utilize the relation of liquid pressure and liquid level, fluid density to calculate gypsum slurries density, after the measurement with slurry samples emptying.As required the setting measurement cycle, each cycle once cleans, thereby reaches purpose accurate, the stably measured serum density.
This measuring method has following advantage:
1) liquid pressure equals liquid level and fluid density, acceleration of gravity is amasss, be equal to the material density definition of quality than volume, this measuring method only has pressure measurement errors, does not have the transformational relation of other physical quantitys, method is the most original, and the error link of generation is minimum.
2) this method is a period measurement, and wash measuring system each measuring period, can not stop up the measurement pipeline.
3) this method is taken out slurries, treats to measure after slurries are in static, stable state, measures the real density of slurries, judges whether to satisfy slurries and goes out the gypsum condition, bleeds off slurries behind the slurries stably measured immediately, and slurries can not precipitate in a short time.
4) routine measurement means, no radioactive source pollutes human and environment problem, no radioactive source problem of management.
5) service life of equipment is long, and measuring system can wholely not damaged, and compares with Coriolis flowmeter density measurement and gamma-rays radiation absorption mensuration density measurement, need not to change integral device, saves maintenance cost.
[description of drawings]
Fig. 1 is that of the present utility model pair of pressure unit scheme obtains the slurry samples device connection diagram by the absorption tower.
Fig. 2 is that of the present utility model pair of pressure unit scheme obtains the slurry samples device connection diagram by the outlet of gypsum slurries extraction pump.
Fig. 3 is single pressure unit scheme device connection diagram of the present utility model.
Fig. 4 is the control flow chart of the two pressure unit schemes of the utility model.
Fig. 5 is the control flow chart of the utility model list pressure unit scheme.
[embodiment]
According to field condition, obtain the sample slurries and can select dual mode, Fig. 1 is that of the present utility model pair of pressure unit scheme obtains the slurry samples device connection diagram by the absorption tower, and Fig. 2 is that of the present utility model pair of pressure unit scheme obtains the slurry samples device connection diagram by the outlet of gypsum slurries extraction pump.Among Fig. 1, Fig. 2, slurry samples pipe (vertical pipeline of setting pressure measuring point among the figure), first pressure-measuring-point 1 (PI-1), second pressure-measuring-point 2 (PI-2), first valve 1, second valve 2, the 3rd valve 3 increase equipment for the utility model.Two pressure-measuring-points are arranged: first pressure-measuring-point 1 (PI-1) and second pressure-measuring-point 2 (PI-2) on the slurry samples pipe, be used to measure installation place pressure (P1 and P2), the slurry samples pipe connects first valve 1, second valve 2 and the 3rd valve 3, first valve 1 connects bottom, absorption tower (scheme one) or gypsum slurries extraction pump export pipeline (scheme two), second valve 2 connects the service water pipeline, the 3rd valve 3 is installed in slurry samples pipe bottom, connects row's trench pipeline.Gypsum slurries extraction pump in absorption tower, the scheme two is an existing equipment, and gypsum slurries extraction pump inlet links to each other with the bottom, absorption tower, and outlet goes to the sulfur removal technology building to produce gypsum.
Fig. 3 is single pressure unit scheme of the present utility model, according to field condition, also can select absorption tower or gypsum slurries extraction pump export pipeline to obtain the measuring samples slurries, compare with two pressure unit schemes, reduce by a pressure unit, increased the first liquid level measuring point 1 (LI-1), two measuring points of the second liquid level measuring point 2 (LI-2) of installing on slurries run-down pipes (pipeline of liquid level measuring point is installed among the figure) and the slurries run-down pipe, other equipment are identical with two pressure unit schemes among the figure.
Fig. 4, Fig. 5 are respectively the flow processs that two pressure unit schemes and single pressure unit scheme are measured gypsum slurries density, according to the measuring period of setting, and the execution that moves in circles of this flow process.
Two pressure unit schemes
(as one hour) opens first valve 1 at regular intervals, after judging that by second pressure-measuring-point, 2 signals the slurries amount enter the slurry samples pipe is satisfied the demand, close first valve 1, after time-delay 3S treats that slurries are stablized in the slurry samples pipe, (pressure of first pressure-measuring-point, 1 measurement is P1 to calculate serum density, the pressure that second pressure-measuring-point 2 is measured is P2, serum density is ρ, acceleration of gravity is g, difference in height is H between two pressure-measuring-points): ρ=(P1-P2)/Hg, calculated value is stored, upgrade new value up to next measuring period.Open the 3rd valve 3, slurries in the slurry samples pipe are bled off, by first pressure-measuring-point, 1 signal and the emptying of short-term delay confirmation slurries, close the 3rd valve 3, open second valve 2 service water is put into the slurry samples pipe, slurry samples pipe and institute's attached device are cleaned, confirming to clean the water yield by second pressure-measuring-point, 2 signals satisfies the demand, close second valve 2, open the 3rd valve 3, wash-down water is bled off,, close the 3rd valve 3 by first pressure-measuring-point, 1 signal and the emptying of short-term delay confirmation wash-down water.Treat that next Measuring Time repeats this operation, the cycle is finished serosity density measurement, and set up on their own measuring period according to actual needs.Measure to calculate and realize by PLC with valve control.
Single pressure unit scheme
(as one hour) opens first valve 1 at regular intervals, enter the slurries height arrival H of slurry samples pipe by the judgement of the first liquid level measuring point, 1 signal after, close first valve 1, judge that by the second liquid level measuring point 2 the slurries height can not surpass H, after time-delay 3S treats that slurries are stablized in the slurry samples pipe, (pressure of pressure-measuring-point 1 measurement is P1 to calculate serum density, serum density is ρ, acceleration of gravity is g, first pressure-measuring-point to liquid level peak height is H): ρ=P1/Hg, calculated value is stored, upgrade new value up to next measuring period.Open the 3rd valve 3, slurries in the slurry samples pipe are bled off, by first pressure-measuring-point, 1 signal and the emptying of short-term delay confirmation slurries, close the 3rd valve 3, open second valve 2 service water is put into the slurry samples pipe, to the slurry samples pipe, slurries run-down pipe and institute's attached device are cleaned, by the first liquid level measuring point 1, the second liquid level measuring point, 2 signals are confirmed to clean the water yield and are satisfied the demand, close second valve 2, open the 3rd valve 3, wash-down water is bled off, by first pressure-measuring-point, 1 signal, the first liquid level measuring point 1, the 3rd valve 3 is closed in the second liquid level measuring point, 2 signals and the emptying of short-term delay confirmation wash-down water.Treat that next Measuring Time repeats this operation, the cycle is finished serosity density measurement, and set up on their own measuring period according to actual needs.Measure to calculate and realize by PLC with valve control.
Two pressure unit schemes and single pressure unit scheme have his own strong points, all can reach the problem that existing measurement means can not satisfy slurries density measurement system stable operation in the desulfuration absorbing tower, accurately measure that solves, single pressure unit scheme measuring accuracy, investment cost, installation simple and easy aspect two relatively pressure unit schemes have advantage, but it is prudent that the type selecting of the first liquid level measuring point 1, the second liquid level measuring point 2 is wanted, and this type measuring point needs certain maintenance workload.
Claims (2)
1. flue gas desulfurization island serosity density measurement system, it is characterized in that, this system comprises a slurry samples pipe, be provided with first pressure-measuring-point (1) and superposed second pressure-measuring-point (2) that are positioned at the bottom in the slurry samples pipe, difference in height is H between two pressure-measuring-points, slurry samples pipe bottom is separately installed with first valve (1) that is connected with bottom, absorption tower or gypsum slurries extraction pump export pipeline and second valve (2) that is connected with the service water pipeline, slurry samples pipe bottom is equipped with the 3rd valve (3) that is used for discharge slurry, and the 3rd valve (3) connects row's trench pipeline.
2. flue gas desulfurization island serosity density measurement system, it is characterized in that, this system comprises a slurry samples pipe, the bottom is provided with first pressure-measuring-point (1) in the slurry samples pipe, the slurries height place that slurry samples pipe top is positioned at setting is provided with a bypass slurries run-down pipe, be respectively arranged with the first liquid level measuring point (1) and (2) two measuring points of the second liquid level measuring point in the slurries run-down pipe from bottom to top, slurry samples pipe bottom is separately installed with first valve (1) that is connected with bottom, absorption tower or gypsum slurries extraction pump export pipeline and second valve (2) that is connected with the service water pipeline, slurry samples pipe bottom is equipped with the 3rd valve (3) that is used for discharge slurry, and the 3rd valve (3) connects row's trench pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201226820U CN201754140U (en) | 2010-03-04 | 2010-03-04 | Slurry density measuring system of flue gas desulfurization apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201226820U CN201754140U (en) | 2010-03-04 | 2010-03-04 | Slurry density measuring system of flue gas desulfurization apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201754140U true CN201754140U (en) | 2011-03-02 |
Family
ID=43621873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201226820U Expired - Lifetime CN201754140U (en) | 2010-03-04 | 2010-03-04 | Slurry density measuring system of flue gas desulfurization apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201754140U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221513A (en) * | 2011-03-31 | 2011-10-19 | 成都山江岩土科技有限责任公司 | Slurry density sensor |
| CN102519545A (en) * | 2011-12-31 | 2012-06-27 | 浙江省电力试验研究院 | Method and device for measuring liquid level of absorption tower |
| CN104007042A (en) * | 2014-05-29 | 2014-08-27 | 中国神华能源股份有限公司 | Absorption tower system and slurry density measuring device for same |
| CN105241788A (en) * | 2015-09-14 | 2016-01-13 | 天津二十冶建设有限公司 | Convenient industrial canning liquid density measurement method |
| CN106596332A (en) * | 2017-02-15 | 2017-04-26 | 北京北方节能环保有限公司 | Spray tower seriflux density measuring device by limestone method |
-
2010
- 2010-03-04 CN CN2010201226820U patent/CN201754140U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221513A (en) * | 2011-03-31 | 2011-10-19 | 成都山江岩土科技有限责任公司 | Slurry density sensor |
| CN102519545A (en) * | 2011-12-31 | 2012-06-27 | 浙江省电力试验研究院 | Method and device for measuring liquid level of absorption tower |
| CN104007042A (en) * | 2014-05-29 | 2014-08-27 | 中国神华能源股份有限公司 | Absorption tower system and slurry density measuring device for same |
| CN105241788A (en) * | 2015-09-14 | 2016-01-13 | 天津二十冶建设有限公司 | Convenient industrial canning liquid density measurement method |
| CN106596332A (en) * | 2017-02-15 | 2017-04-26 | 北京北方节能环保有限公司 | Spray tower seriflux density measuring device by limestone method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102384884A (en) | Sampling type size density measuring method | |
| CN201754140U (en) | Slurry density measuring system of flue gas desulfurization apparatus | |
| CN105435494B (en) | Thickener automatic drug dosing system and method thereof | |
| CN101949818A (en) | Automatic detecting and metering device and method for rock-soil permeability | |
| CN105241528B (en) | A kind of flow sensor detection platform and its control method | |
| CN102012255A (en) | Automatic control system for oil well tipping bucket measurement | |
| CN103527173B (en) | A kind of metering device of output of fluid produced by oil production well | |
| CN203376230U (en) | Measuring device for pH (Potential of Hydrogen) value and density value of slurry | |
| CN206740577U (en) | Slurry density of desulfurizing absorption column monitoring system | |
| CN204612779U (en) | A kind of liquid level takes into account fluid reservoir | |
| CN201780286U (en) | Light-operated metering device | |
| CN202421014U (en) | Slurry density-measuring unit | |
| CN209625045U (en) | A kind of wet desulfuration tower detection device | |
| CN201697681U (en) | Light control metering device | |
| CN205120523U (en) | Flue gas desulfurization system absorbs slurry density value measuring device | |
| CN203572797U (en) | Box type visible pH on-line measuring device | |
| CN203745264U (en) | Water sample pretreatment device for water quality monitoring | |
| CN203688180U (en) | Automatic blowby and leakage measuring apparatus for valve | |
| CN109403951B (en) | Three-phase metering integrated device for oil well | |
| CN203208745U (en) | Backwash water volume controller of sewage filtering tank | |
| CN103134944A (en) | Flow velocity measuring device | |
| CN206871403U (en) | A kind of feed back control device | |
| CN205049221U (en) | Area is filtered sample connection and is adopted balanced steelyard formula metering tank of 3 roll slide rail manholes | |
| CN205027419U (en) | Flow sensor testing platform | |
| CN201507434U (en) | Laboratory water purifier water purification pump testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN HAOKUN HEATING WORK TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YANG YUJUAN Effective date: 20141224 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300380 XIQING, TIANJIN TO: 300000 XIQING, TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141224 Address after: 300000 Tianjin city Xiqing District Yangliuqing town, British gardens Ya garden 10-1-402 Patentee after: Tianjin Hao Kun Thermal Technology Co., Ltd. Address before: 300380 room 520, bureau of cultural affairs, Xiqing District, Tianjin Patentee before: Yang Yujuan |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110302 |
|
| CX01 | Expiry of patent term |