CN202421014U - Slurry density-measuring unit - Google Patents
Slurry density-measuring unit Download PDFInfo
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- CN202421014U CN202421014U CN2011205261832U CN201120526183U CN202421014U CN 202421014 U CN202421014 U CN 202421014U CN 2011205261832 U CN2011205261832 U CN 2011205261832U CN 201120526183 U CN201120526183 U CN 201120526183U CN 202421014 U CN202421014 U CN 202421014U
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Abstract
The utility model discloses a slurry density-measuring unit, which belongs to the field of wet desulphurization engineering. The slurry density-measuring unit comprises a vertical measuring barrel, a slurry outlet pipeline and a slurry inlet pipeline, wherein the slurry outlet pipeline and the slurry inlet pipeline respectively communicate with the upper part and the lower part of the measuring barrel, the measuring barrel is provided with an upper pressure-measuring point and a lower pressure-measuring point, the slurry inlet pipeline comprises a slurry inlet section and a measuring section, the measuring section communicates with the lower part of the measuring barrel, and a pH meter is arranged on the measuring section. The slurry density-measuring unit is used for measuring the density of flowing slurry, the structure is simple, the cost is low, the measuring precision is high, the pipelines cannot be easily blocked, and the service life is long.
Description
Technical field
The utility model relates to wet desulphurization engineering field, is specifically related to a kind of serosity density measurement device.
Background technology
The density of desulfurization slurry affects wearing and tearing and the obstruction etc. of discharge, the equipment operation of desulfuration efficiency, gypsum in the smoke-gas wet desulfurization system, need carry out in real time the density of desulfurization slurry in the desulphurization system operational process, the accurate measurement.
Resonant mode tuning fork densitometer is a kind of duct type densitometer that this several years research and developments get up, and is characterized in high-frequency work, can effectively reduce the interference of vibrations on every side; Measuring accuracy is high; Long service life, piping erection does not have follow-up maintenance work basically; Widespread adoption is used to measure the density of desulfurization slurry in wet method fume desulfurizing system at present.When it is used to measure when being prone to the fouling medium of long duration owing to there is not function of on-line cleaning, medium be attached to also cause on the tuning fork measure inaccurate; Tuning fork densitometer price is also relatively more expensive, does not wait at 5～100,000 yuan according to the different prices with producer of performance parameters.
Radioisotope densimeter; Be provided with the radioactive isotope radiation source in this instrument; Its radioactive radiation (for example gamma-rays) is received by ray detector after seeing through certain thickness sample, and certain thickness sample is relevant with the density of this sample to the uptake of ray; The signal of ray detector is then relevant with this uptake, therefore reflects the density of sample.Though the densitometer measuring accuracy of the type is high, do not need to safeguard that shortcoming is also arranged that the radiomaterial use certificate will 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; Also be applied in the wet desulfurization system at present.
Notification number is that the utility model patent of CN201754140U discloses a kind of flue gas desulfurization island serosity density measurement system; Comprise the slurry samples pipe; Be provided with first and superposed second pressure-measuring-point that are positioned at the bottom in the slurry samples pipe; Highly H between two pressure-measuring-points; Slurry samples pipe lower part is separately installed with first valve that is connected with bottom, absorption tower or gypsum slurries extraction pump export pipeline and second valve that is connected with the service water pipeline, and slurry samples pipe bottom is equipped with the 3rd valve that is used for discharge slurry, and the 3rd valve connects row's trench pipeline.This system's automatic cycle slurries to be measured are taken out; Utilize pressure (pressure) to measure and convert and obtain serum density, but also have the following disadvantages: 1, can't monitor slurries pH in real time, can not control slurries pH in stability range; Cause pipeline scale easily, stop up and corrosion; 2, the design of slurries pipeline causes the serum density can't the online detection of continuity in this system, if continuous operation, the flow velocity instability causes component wear serious easily, and slurries are inhomogeneous simultaneously, are prone to take place particle deposition.
The utility model content
The utility model provides a kind of serosity density measurement device, has realized the continuity on-line monitoring of serum density, has effectively solved measurement mechanism and after using for a long time, has caused the line clogging problem.
A kind of serosity density measurement device; Comprise vertical measurement tube, the pulp pipeline and the pulp-inlet pipe road that are communicated with measurement tube upper and lower respectively; Described measurement tube is provided with upward pressure measuring point and downforce measuring point; Described pulp-inlet pipe road comprises into slurry section and measuring section, and described measuring section is communicated with a measurement tube bottom, and described measuring section is provided with pH meter.
Be communicated with flushing pipe on the described pulp pipeline, described measuring section is provided with valve, and when device was not worked, by injection technology water flushing in the flushing pipe, the fresh water (FW) after the flushing was got rid of from valve; Preferably, described valve is installed in measuring section and connects the into end of slurry section, so that measuring section pipeline ability cleaning down is clean.
Described pH meter is installed in the centre position of measuring section, and between valve and measurement tube bottom, the pipe interior slurries are in the mixing state here, are easy to detect pH, and it is little to receive the slurries impulsive force, less to apparatus damage.
Described upward pressure measuring point and downforce measuring point place are equipped with upward pressure dish and downforce dish respectively; Described upward pressure dish is connected with pressure transmission device with the downforce dish; The pressure unit type selecting is two flange diaphragm types, and the band kapillary is connected with two pressure disc; Two pressure disc are installed on the differing heights position of measuring tube respectively, are used to measure the slurries static pressure in the tube.
Described measure tube with advance the slurry section the cross-sectional area ratio be 10: 1; Described pulp pipeline is 4: 1 with the cross-sectional area ratio that advances the slurry section; Described measuring section is 2.5: 1 with the cross-sectional area ratio that advances the slurry section; Describedly advance slurry section xsect for circular, diameter is 25-40mm.If advance to starch flow too small, then the slurries density measurement is under-represented, if flow is excessive, it is excessive to measure energy consumption so, is set to 25-40mm so advance the diameter of slurry section, thereby to advance to starch flow be 25～90m in control
3/ h.
The probe of said pH meter is fixed on the top of measuring section through pedestal and stretches in the measuring section; Said pH meter range 0～14pH, contrast electrode Ag/AgCl, liquid meet material PTFE (teflon); Corrosion-resistant; The reference structure is two salt bridge contrast electrode structures, and gel media, built-in probe are temp probe; On the pulp-inlet pipe road, measuring section is set, at measuring section pH meter is installed and can be monitored slurries pH in real time, control slurries pH is in range of stability, in case the pipeline scale corrosion.
The measuring principle of the utility model:
Slurries get into from bottom to top through the pulp-inlet pipe road and measure tube; Be convenient to make slurries to be full of the whole measuring graduated cylinder like this; Select suitable to advance slurry section bore based on the operating mode flow, guarantee the high accuracy measured, pass through pH meter and pressure transmitter then to reduce flow velocity; Thereby record the duty density value, the pulp pipeline flows out from the upper end; When not working, wash with fresh water (FW) from the upper end, in case pipe interior stops up, the valve from the lower end flows out then.
Density measure is to calculate the density that formula Δ p=ρ gh comes the indirect calculation slurries through fluid pressure.In the formula, Δ p is the differential pressure of point-to-point transmission; G is an acceleration of gravity, 9.81m/s
2, ρ is a serum density, h is the distance of low-pressure lateral pressure sample position and high side pressure sample position.H is a fixed value in the formula, can extrapolate corresponding serum density as long as therefore obtain the pressure differential of this point-to-point transmission.For example the pressure disc designed distance is 0.5m up and down, and pressure reduction is shown as 5400pa between two dial plates, calculates according to formula and can learn that serum density is 1.10g/cm in the cavity
3
The beneficial effect of the utility model:
(1) processing technology is simple, and cost is low, and is easy to maintenance; Inner structure is succinct; Do not have the possibility of stopping up with wearing and tearing, take into account radioisotope densimeter with tuning fork density and compare, the device that the utility model provides can reach same performance; And cheap, the cost of complete density measuring equipment only is equivalent to tuning fork densitometric 10～30%;
(2) can online in real time monitor into slurry pH, control slurries pH in range of stability to reduce the slurries fouling; Can realize the online Density Detection of slurries continuity, the design of slurries pipeline and the control of flow make measurement effect reach best, are difficult for particle deposition takes place, and reduce components damage.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1; A kind of serosity density measurement device; Vertical measurement tube 5 upper ends are communicated with pulp pipeline 10; Pulp pipeline 10 is provided with valve 1, is provided with the flushing pipe 11 that is communicated with pulp pipeline 10 between valve 1 and the measurement tube 5 and near valve one 12 places, and flushing pipe 11 is provided with valve 2 13; The lower end of measuring tube 5 is communicated with the pulp-inlet pipe road, and the pulp-inlet pipe road comprises measuring section 2 and advance slurry section 1, measuring section 2 is horizontally disposed with, an end with advance to starch section 1 be communicated with, the other end is communicated with measurement tube 5 bottoms; Be provided with valve 3 14 at measuring section 2 with entering the end that slurry section 1 is connected, measuring section 2 bottoms are provided with valve 4 15 near valve 3 14 places, and pH meters 4 are fixed through pedestal 3 in measuring section 2 middle top; The probe of pH meter 4 stretches in the measuring section 2, and pH meter 4 ranges are 0～14, contrast electrode Ag/AgCl; Liquid meets material PTFE (teflon), and is corrosion-resistant, and the reference structure is two salt bridge contrast electrode structures; Gel media, built-in probe are temp probe.
A upward pressure dish 6 is installed at the upward pressure measuring point place of measuring tube 5, and a downforce dish 7 is installed at downforce measuring point place, and upward pressure dish 6 is installed on the outer wall of measuring tube 5 with downforce dish 7; The pressure reduction diaphragm of pressure disc is positioned at and measures tube 5 up and down, if it is too little to be separated by, then pressure is more or less the same; Too big if be separated by; Then the slurries heterogeneity considers in the engineering design that it highly is 0.5m that design is separated by, and pressure unit 9 type selectings are two flange diaphragm types; Band kapillary 8 is connected with downforce dish 7 with upward pressure dish 6 through kapillary 8.
The use flow process of the utility model:
This device is installed in the other 1m of desulphurization circulating pump discharge vertical pipe place, connects a bypass from the circulating-pump outlet pipeline and feed the serosity density measurement device, the serosity density measurement device is vertically installed, and it is vertical with surface level to measure tube 5.Open valve 1 and valve 3 14; Slurries get into measuring section 2 by advancing slurry section 1; Get into from bottom to top by measuring section 2 again and measure tube 5; The pressure reduction diaphragm of probe, upward pressure dish 6 and the downforce dish 7 of process pH meter 4; By capillary 8 pressure is sent to the density value that pressure transmitter 9 records duty, flows out to absorption Tata still from pulp pipeline 10;
When maintenance or shut down condition; Valve-off 1 and valve 3 14, Open valve 2 13 and valve 4 15 are measured tube 5, pipeline and the differential pressure diaphragm of pressure disc up and down from the upper end with fresh water (FW) through flushing pipe 11 flushings; The valve four of measuring section 2 flows out from the lower end, in case pipe interior stops up.The density measuring equipment operation biennium measuring accuracy that adopts the utility model to provide is high, and speed is fast, and has reduced maintainer's maintenance time.
Claims (7)
1. serosity density measurement device; Comprise vertical measurement tube (5), the pulp pipeline (10) and the pulp-inlet pipe road that are communicated with measurement tube (5) upper and lower respectively; Described measurement tube (5) is provided with upward pressure measuring point and downforce measuring point, it is characterized in that described pulp-inlet pipe road comprises into slurry section (1) and measuring section (2); Described measuring section (2) is communicated with measurement tube (a 5) bottom, and described measuring section (2) is provided with pH meter (4).
2. serosity density measurement device according to claim 1 is characterized in that, is communicated with flushing pipe (11) on the described pulp pipeline (10), and described measuring section (2) is provided with valve.
3. serosity density measurement device according to claim 2 is characterized in that, described valve is installed in the end that measuring section (2) connects to advance slurry section (1).
4. according to claim 1 or 2 or 3 described serosity density measurement devices, it is characterized in that described pH meter (4) is installed in the centre position of measuring section (2).
5. serosity density measurement device according to claim 1; It is characterized in that; Described upward pressure measuring point and downforce measuring point place are equipped with upward pressure dish (6) and downforce dish (7) respectively, and described upward pressure dish (6) is connected with a pressure transmission device (9) with downforce dish (7).
6. serosity density measurement device according to claim 1 is characterized in that, the described tube (5) of measuring is 10: 1 with the cross-sectional area ratio that advances slurry section (1); Described pulp pipeline (10) is 4: 1 with the cross-sectional area ratio that advances slurry section (1); Described measuring section (2) is 2.5: 1 with the cross-sectional area ratio that advances slurry section (1).
7. serosity density measurement device according to claim 6 is characterized in that, describedly advances slurry section (1) xsect for circular, and diameter is 25-40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205261832U CN202421014U (en) | 2011-12-15 | 2011-12-15 | Slurry density-measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205261832U CN202421014U (en) | 2011-12-15 | 2011-12-15 | Slurry density-measuring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421014U true CN202421014U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205261832U Expired - Fee Related CN202421014U (en) | 2011-12-15 | 2011-12-15 | Slurry density-measuring unit |
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| Country | Link |
|---|---|
| CN (1) | CN202421014U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106442216A (en) * | 2016-08-30 | 2017-02-22 | 浙江天蓝环保技术股份有限公司 | Online tubular density measurement device and 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 |
-
2011
- 2011-12-15 CN CN2011205261832U patent/CN202421014U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106442216A (en) * | 2016-08-30 | 2017-02-22 | 浙江天蓝环保技术股份有限公司 | Online tubular density measurement device and 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 |
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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: 20120905 Termination date: 20201215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |