CN213253809U - Lime slurry density measuring device - Google Patents
Lime slurry density measuring device Download PDFInfo
- Publication number
- CN213253809U CN213253809U CN202021683624.5U CN202021683624U CN213253809U CN 213253809 U CN213253809 U CN 213253809U CN 202021683624 U CN202021683624 U CN 202021683624U CN 213253809 U CN213253809 U CN 213253809U
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- Prior art keywords
- pipe
- measuring
- tank body
- differential pressure
- lime slurry
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- Expired - Fee Related
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- 239000002002 slurry Substances 0.000 title claims abstract description 48
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 13
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 13
- 239000004571 lime Substances 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000001739 density measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- -1 fluoride ions Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to the technical field of measuring devices, in particular to a lime slurry density measuring device; the device comprises a tank body and a measuring device, wherein a feeding nozzle is arranged at the lower end of the tank body, a vertical overflow pipe is arranged in the tank body, the lower end of the overflow pipe is in butt joint with the feeding nozzle, and a plurality of nozzles which are arranged in an array are arranged on the side part of the upper end of the overflow pipe; a high-pressure end measuring pipe, a low-pressure end measuring pipe, a PH measuring pipe and a material returning port are arranged on the side part of the tank body; the measuring device comprises a cabinet body, and a differential pressure transmitter, a pH meter electrode and a signal processing unit which are arranged in the cabinet body, wherein the differential pressure transmitter and the pH meter electrode are respectively electrically connected with the signal processing unit, the differential pressure transmitter is connected with a high-pressure end measuring tube and a low-pressure end measuring tube, and the pH meter electrode is connected with the pH measuring tube; the abrasion of slurry to the pH meter electrode is effectively reduced, the differential pressure transmitter is hardly abraded, and the service life of equipment is prolonged.
Description
Technical Field
The utility model belongs to the technical field of measuring device technique and specifically relates to a lime thick liquid density measurement device is related to.
Background
In the wet desulfurization system of a thermal power plant, the accuracy of the measurement of the density of limestone slurry is related to the conversion rate of SO2, i.e., the desulfurization efficiency in general, and further, whether the flue gas emission meets the environmental requirements. The density measurement must therefore be accurate and provide reliable operating data for the operator. However, in the actual measurement of the density of limestone slurry, many problems and difficulties are caused to the measurement due to the characteristics of the medium of the slurry itself.
Problems with conventional measurements:
1) the corrosivity is strong; the concentration of chloride ions and fluoride ions in the slurry is high, and the slurry has high corrosivity on a density measuring band of a traditional mass flowmeter, so that the service life of the slurry is directly shortened greatly.
2) Easy blockage: the mass fraction of solid substances in the slurry is high, the flowing tissue is not good, and solid particles are easy to block a meter when the solid particles are still in a machine state. The mass flowmeter needs to be flushed regularly, and is withdrawn frequently, so that the maintenance amount is large.
3) The measuring tube in the measuring barrel of the mass flow meter is frequently washed by the slurry and worn out, thereby causing high maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.
A lime slurry density measuring device comprises a tank body and a measuring device, wherein a feeding nozzle is arranged at the lower end of the tank body, a vertical overflow pipe is arranged in the tank body, the lower end of the overflow pipe is in butt joint with the feeding nozzle, and a plurality of nozzles which are arranged in an array mode are arranged on the side portion of the upper end of the overflow pipe; a high-pressure end measuring pipe, a low-pressure end measuring pipe, a PH measuring pipe and a material returning port are arranged on the side part of the tank body; the measuring device comprises a cabinet body, and a differential pressure transmitter, a pH meter electrode and a signal processing unit which are arranged in the cabinet body, wherein the differential pressure transmitter and the pH meter electrode are respectively electrically connected with the signal processing unit, the differential pressure transmitter is connected with a high-pressure end measuring pipe and a low-pressure end measuring pipe, and the pH meter electrode is connected with the pH measuring pipe.
Preferably, the high-pressure end measuring pipe and the low-pressure end measuring pipe are arranged in an upward inclined manner.
Preferably, the nozzle is connected with a three-way pipe, one end of the three-way pipe is connected with a feed inlet, the feed inlet is connected with a first manual valve, the other end of the three-way pipe is connected with a water outlet, and the water outlet is connected with a second manual valve.
Preferably, the jar body includes funnel portion, main part and cover, funnel portion integrated into one piece at the lower extreme of main part, and the main part is cylindric structure, and high-pressure end surveys buret, low pressure end survey buret, PH surveys buret and returns the material mouth and all is located the main part, and the upper end at the main part is closed to the sealed lid of cover.
Preferably, a flushing pipe is arranged at the side part of the funnel part, and the flushing pipe is connected with a third manual valve.
Preferably, a column for supporting the tank body is arranged around the funnel part.
Compared with the prior art, the beneficial effects of the utility model are that:
the density value and the pH value of the slurry can be measured simultaneously; the measuring device comprises a differential pressure transmitter, a pH meter electrode and a signal processing unit; the measuring method comprises the steps of introducing slurry into a tank body, and discharging the slurry from a material returning port after measurement is finished; the tank body is a non-pressure container, a free liquid level exists, power is derived from the gravitational potential energy of slurry in the absorption tower, the slurry is introduced into the feeding nozzle from the bottom of the slurry pool in the absorption tower and is ejected out, the slurry can be kept to be disturbed by the feeding nozzle, so that the solid particles are prevented from settling, the ejected slurry overflows from the upper part through the overflow pipe, the disturbance to the measured slurry is reduced, the measurement distortion caused by the influence of the dynamic pressure of the external slurry on the differential pressure transmitter is avoided, the slurry discharged from the tank body is converged to a pit, and the slurry is sent back to the absorption tower through the pit pump; the flow velocity in the measuring tank is less than 0.5 m, and due to the adoption of the unique structural design of the overflow pipe, the abrasion of slurry on the pH meter electrode is effectively reduced, the differential pressure transmitter is hardly abraded, the service life of equipment is prolonged, the reliability of the equipment is improved, the flow of the device is only about 7m3/h, and the power consumption of the system is saved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a partial structural sectional view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, a lime slurry density measuring apparatus includes a tank 10 and a measuring apparatus 20, a feeding nozzle 31 is disposed at a lower end of the tank 10, a vertical overflow pipe 30 is disposed inside the tank 10, a lower end of the overflow pipe 30 is in butt joint with the feeding nozzle 31, and a plurality of nozzles 301 arranged in an array are disposed on a lateral portion of an upper end of the overflow pipe 30; a high-pressure end measuring pipe 34, a low-pressure end measuring pipe 35, a PH measuring pipe and a material returning port 32 are arranged on the side part of the tank body 10; the measuring device 20 comprises a cabinet body 21, and a differential pressure transmitter 23, a pH meter electrode 22 and a signal processing unit 21 which are arranged in the cabinet body 21, wherein the differential pressure transmitter 23 and the pH meter electrode 22 are respectively electrically connected with the signal processing unit 21, the differential pressure transmitter 23 is connected with a high-pressure end measuring pipe 34 and a low-pressure end measuring pipe 35, and the pH meter electrode 22 is connected with the pH measuring pipe.
In the technical means, the lime slurry density measuring device can simultaneously measure the density value and the pH value of the slurry; the measuring device comprises a differential pressure transmitter 23, a pH meter electrode 22 and a signal processing unit 21; the measuring method is characterized in that slurry is introduced into the tank body 10, and the slurry is discharged from a material returning port after the measurement is finished; the tank body 10 is a non-pressure container, a free liquid level exists, power is derived from the gravitational potential energy of slurry in the absorption tower, the slurry is introduced into the feeding nozzle 31 from the bottom of a slurry pool of the absorption tower and is ejected out, the slurry can be kept to be disturbed by using the feeding nozzle 31, so that the solid particles are ensured not to be settled, the ejected slurry overflows from the upper part by the overflow pipe 30, the disturbance to the measured slurry is reduced, the measurement distortion caused by the influence of the hydraulic pressure of external slurry on the differential pressure transmitter 23 is avoided, the slurry discharged from the tank body 10 is converged to a pit and is sent back to the absorption tower by a pit pump; the flow velocity in the measuring tank is less than 0.5 meter, and due to the adoption of the unique structural design of the overflow pipe 30, the abrasion of slurry on the pH meter electrode 22 is effectively reduced, the differential pressure transmitter 23 is hardly abraded, the service life of the equipment is prolonged, the reliability of the equipment is improved, the flow of the device is only about 7m3/h, and the power consumption of the system is saved.
The density measurement mode of the differential pressure transmitter 23 includes, according to the hydrostatic principle:
PB＝PA+Hρg (1)
in the formula: h-differential pressure transmitter 23 head;
rho is the measured medium density;
g is the gravity acceleration of the measured local area. Typically a constant of 9.8.
Obtainable from formula (1):
ΔP＝PB－PA＝Hρg
in general, the differential pressure transmitter 23 height differential and gravitational acceleration are known, and therefore, the measured liquid density can be calculated from the differential pressure measured by the differential pressure gauge in direct proportion to the density of the liquid.
As further shown in fig. 1, the high pressure end measurement pipe 34 and the low pressure end measurement pipe 35 are disposed obliquely upward; further avoiding measurement distortion of differential pressure transmitter 23 due to the influence of external slurry pressure.
As further shown in fig. 1-2, the nozzle 301 is connected to a tee 36, one end of the tee 36 is connected to the feed inlet 38, the feed inlet 38 is connected to a first manual valve 381, the other end of the tee 36 is connected to a drain port 37, and the drain port 37 is connected to a second manual valve 371; the inlet port 38 is used for introducing the slurry, and the outlet port 37 is used for performing a reflux action on the overflow pipe 30.
As further shown in fig. 2, the tank 10 includes a funnel portion 12, a main body portion 11 and a tank cover 13, the funnel portion 12 is integrally formed at the lower end of the main body portion 11, the main body portion 11 is cylindrical, a high-pressure end measuring pipe 34, a low-pressure end measuring pipe 35, a PH measuring pipe and a return port 32 are all located on the main body portion 11, and the tank cover 13 is hermetically covered at the upper end of the main body portion 11.
As further shown in fig. 1, a flushing pipe 14 is arranged at the side of the funnel part 12, and the flushing pipe 14 is connected with a third manual valve 15; the wash pipe 14 is used to wash the inside of the can body 10 to keep the can body 10 clean.
As further shown in fig. 1-2, a post 16 is provided around the funnel 12 for supporting the can body 10.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. A lime slurry density measuring device is characterized by comprising a tank body and a measuring device, wherein a feeding nozzle is arranged at the lower end of the tank body, a vertical overflow pipe is arranged in the tank body, the lower end of the overflow pipe is in butt joint with the feeding nozzle, and a plurality of nozzles which are arranged in an array are arranged on the side part of the upper end of the overflow pipe; a high-pressure end measuring pipe, a low-pressure end measuring pipe, a PH measuring pipe and a material returning port are arranged on the side part of the tank body; the measuring device comprises a cabinet body, and a differential pressure transmitter, a pH meter electrode and a signal processing unit which are arranged in the cabinet body, wherein the differential pressure transmitter and the pH meter electrode are respectively electrically connected with the signal processing unit, the differential pressure transmitter is connected with a high-pressure end measuring pipe and a low-pressure end measuring pipe, and the pH meter electrode is connected with the pH measuring pipe.
2. The apparatus for measuring the density of a lime slurry according to claim 1, wherein the high pressure end measuring pipe and the low pressure end measuring pipe are disposed to be inclined upward.
3. The device for measuring the density of the lime slurry as claimed in claim 1, wherein the nozzle is connected with a three-way pipe, one end of the three-way pipe is connected with a feed inlet, the feed inlet is connected with a first manual valve, the other end of the three-way pipe is connected with a water outlet, and the water outlet is connected with a second manual valve.
4. The lime slurry density measuring device of claim 1, wherein the tank body comprises a funnel part, a main body part and a tank cover, the funnel part is integrally formed at the lower end of the main body part, the main body part is of a cylindrical structure, the high-pressure end measuring pipe, the low-pressure end measuring pipe, the PH measuring pipe and the return port are all located on the main body part, and the tank cover is sealed and covered at the upper end of the main body part.
5. A lime slurry density measuring apparatus according to claim 4, wherein a flushing pipe is provided at a side of the funnel part, and a third manual valve is connected to the flushing pipe.
6. A lime slurry density measuring apparatus according to claim 4, wherein a column for supporting the tank is provided around the funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021683624.5U CN213253809U (en) | 2020-08-13 | 2020-08-13 | Lime slurry density measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021683624.5U CN213253809U (en) | 2020-08-13 | 2020-08-13 | Lime slurry density measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213253809U true CN213253809U (en) | 2021-05-25 |
Family
ID=75971751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021683624.5U Expired - Fee Related CN213253809U (en) | 2020-08-13 | 2020-08-13 | Lime slurry density measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213253809U (en) |
-
2020
- 2020-08-13 CN CN202021683624.5U patent/CN213253809U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 |