CN215179396U - Periodic sampling differential pressure densimeter for desulfurization system of thermal power plant - Google Patents
Periodic sampling differential pressure densimeter for desulfurization system of thermal power plant Download PDFInfo
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- CN215179396U CN215179396U CN202121057482.6U CN202121057482U CN215179396U CN 215179396 U CN215179396 U CN 215179396U CN 202121057482 U CN202121057482 U CN 202121057482U CN 215179396 U CN215179396 U CN 215179396U
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- pipeline
- discharge
- slurry supply
- thick liquid
- power plant
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Abstract
The utility model discloses a cycle sample differential pressure densimeter for desulfurization system of thermal power plant, including the confession thick liquid pipeline that measures a section of thick bamboo and be connected with the lower part feed inlet of measuring a section of thick bamboo, the other end that supplies the thick liquid pipeline supplies the thick liquid valve with the absorption tower of the lower extreme discharge gate department setting of absorption tower to be connected, supply the thick liquid pipeline to pass through tee bend and sparge water pipe connection, supply the thick liquid pipeline to supply to be provided with between the thick liquid valve at tee bend and absorption tower and supply thick liquid pneumatic valve, the sparge water pipeline is provided with sparge water pneumatic valve, the bottom export and the discharge piping connection of measuring a section of thick bamboo, the discharge piping is provided with the discharge pneumatic valve, the measuring a section of thick bamboo is provided with first pressure transmitter and is located the second pressure transmitter of this first pressure transmitter below, the top of measuring a section of thick bamboo is provided with the overflow hole. Compare current mass flow densimeter, the utility model discloses equipment cost greatly reduced, it is difficult for breaking down, long service life, easy to maintain, it is lower to change the part cost.
Description
Technical Field
The utility model relates to a differential pressure densimeter, concretely relates to periodic sampling differential pressure densimeter for desulfurization system of thermal power plant.
Background
In a thermal power plant, the slurry density directly influences the quality of gypsum discharged from a desulfurization system and the slurry supply amount of an absorption tower, and even causes the environmental protection data to exceed the standard, so that the density measurement is very important in the desulfurization system of the thermal power plant.
Existing thermal power plant desulfurization systems typically employ a mass flow densitometer for slurry density measurements. However, the measuring element is seriously abraded due to long-term flowing slurry scouring, so that the slurry density cannot be accurately measured, and the failure rate is high. The price of the mass flow densimeter is about 11 ten thousand yuan, the cost for replacing the mass flow densimeter is high, the service life is only about two years, and the equipment cost is increased.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art existence, provide a periodic sampling pressure differential densimeter for thermal power plant's desulfurization system that cost is lower, longe-lived, easy to maintain, change the part cost is lower.
The utility model discloses a realize through following technical scheme: the utility model provides a period sample differential pressure densimeter for desulfurization system of thermal power plant, including the measurement section of thick bamboo and with the confession thick liquid pipeline of the lower part feed inlet of measurement section of thick bamboo connection, the absorption tower that supplies the other end of thick liquid pipeline and the lower extreme discharge gate department of absorption tower to set up supplies the thick liquid valve to be connected, supply the thick liquid pipeline to pass through tee bend and sparge water pipe connection, supply the thick liquid pipeline be in the tee bend with the absorption tower supplies to be provided with between the thick liquid valve and supplies thick liquid pneumatic valve, the sparge water pipeline is provided with the pneumatic valve of sparge water, the bottom export and the discharge line connection of measurement section of thick bamboo, the discharge line is provided with the discharge pneumatic valve, the measurement section of thick bamboo is provided with first pressure transmitter and is located the second pressure transmitter of this first pressure transmitter below, the top of measurement section of thick bamboo is provided with the overflow hole.
The lower port of the discharge pipeline extends downwards to the trench.
The overflow hole at the top of the measuring cylinder is connected with an overflow pipeline, and the tail end of the overflow pipeline extends to the trench.
The utility model has the advantages that: compare current mass flow densimeter, the utility model discloses equipment cost greatly reduced, it is difficult for breaking down, long service life, easy to maintain, it is lower to change the part cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a measuring cylinder; 2-a first pressure transmitter; 3-a second pressure transmitter; 4-a slurry supply pipeline; 5-slurry supply pneumatic valve; 6-slurry supply valve of the absorption tower; 7-flushing water pipeline; 8-flush water pneumatic valves; 9-a discharge line; 10-discharge pneumatic valves; 11-an overflow line; 12-trench; 13-absorption tower.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a periodic sampling differential pressure densimeter for a desulfurization system of a thermal power plant, including a measuring cylinder 1 and a slurry supply pipeline 4 connected with a lower feed inlet of the measuring cylinder 1, the other end of the slurry supply pipeline 4 is connected with a slurry supply valve 6 of an absorption tower arranged at a lower end discharge port of an absorption tower 13, the slurry supply pipeline 4 is connected with a washing water pipeline 7 through a tee joint, the slurry supply pipeline 4 is provided with a slurry supply pneumatic valve 5 between the tee joint and the slurry supply valve 6 of the absorption tower, the washing water pipeline 7 is provided with a washing water pneumatic valve 8, a bottom outlet of the measuring cylinder 1 is connected with a discharge pipeline 9, the discharge pipeline 9 is provided with a discharge pneumatic valve 10, the measuring cylinder 1 is provided with a first pressure transmitter 2 and a second pressure transmitter 3 located below the first pressure transmitter 2, and the top of the measuring cylinder 1 is provided with an overflow hole.
During operation, the slurry supply valve 6 of the absorption tower is opened, the slurry supply pneumatic valve 5 is opened, slurry is supplied into the measuring cylinder 1, and the slurry supply pneumatic valve 5 is closed after 10 seconds. The first pressure transmitter 2 and the second pressure transmitter 3 detect pressures P1 and P2, respectively, and the heights of the first pressure transmitter 2 and the second pressure transmitter 3 are h1 and h2, respectively. According to the liquid pressure calculation formula:
pressure (P) = liquid density (ρ) × liquid level height (h) × 9.8 (g)
Therefore, as long as the differential pressure of two fixed height points is measured, the operator can calculate the density of the slurry:
ρ=（P1- P2）/g（h1- h2）。
and the slurry can not be precipitated in a very short time of a few seconds, and the measurement result is not influenced.
After the measurement is finished, the discharging pneumatic valve 10 is opened to discharge the slurry, the lower port of the discharging pipeline 9 extends downwards to the position of the trench 12, and the discharging pneumatic valve is closed after 15 seconds. And (4) opening the washing water pneumatic valve 8 to wash the measuring cylinder 1 and the pipeline, and closing the washing water pneumatic valve 8 after 60 seconds. Then the discharge pneumatic valve 10 is opened to discharge the residual slurry and the washing water, and after 30, the discharge pneumatic valve 10 is closed.
The overflow hole at the top of the measuring cylinder 1 is connected to an overflow pipe 11, the end of the overflow pipe 11 extending to the trench 12. If excessive slurry exists in the measuring cylinder 1 during working, the overflowed slurry is discharged to the trench 12 through the overflow pipeline 11 so as to ensure good environment of a working site.
The utility model discloses the density measurement of mainly used wet flue gas desulfurization system thick liquid, or other fluids that need not continuous density measurement. Because the measurement is discontinuous, long-time scouring does not exist, and the method is suitable for measuring the density of the slurry in the limestone powder desulfurization process and the density of the slurry in the electrolytic stone desulfurization process.
It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a cycle sample pressure differential densimeter for desulfurization system of thermal power plant which characterized in that: the periodic sampling differential pressure densimeter for the desulfurization system of the thermal power plant comprises a measuring cylinder and a slurry supply pipeline connected with a lower feed inlet of the measuring cylinder, wherein a slurry supply valve is arranged at the other end of the slurry supply pipeline and at an absorption tower arranged at a lower end discharge outlet of the absorption tower and connected with the slurry supply pipeline through a tee joint, the slurry supply pipeline is connected with a flushing water pipeline through a tee joint, the slurry supply pipeline is arranged at the tee joint, a slurry supply pneumatic valve is arranged between the slurry supply valve and the absorption tower, the flushing water pipeline is provided with a flushing water pneumatic valve, a bottom outlet of the measuring cylinder is connected with a discharge pipeline, the discharge pipeline is provided with a discharge pneumatic valve, the measuring cylinder is provided with a first pressure transmitter and a second pressure transmitter located below the first pressure transmitter, and the top of the measuring cylinder is provided with an overflow hole.
2. The periodic sampling differential pressure density meter for a desulfurization system of a thermal power plant of claim 1, wherein: the lower port of the discharge pipeline extends downwards to the trench.
3. The periodic sampling differential pressure density meter for a desulfurization system of a thermal power plant of claim 2, wherein: the overflow hole at the top of the measuring cylinder is connected with an overflow pipeline, and the tail end of the overflow pipeline extends to the trench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121057482.6U CN215179396U (en) | 2021-05-18 | 2021-05-18 | Periodic sampling differential pressure densimeter for desulfurization system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121057482.6U CN215179396U (en) | 2021-05-18 | 2021-05-18 | Periodic sampling differential pressure densimeter for desulfurization system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215179396U true CN215179396U (en) | 2021-12-14 |
Family
ID=79370834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121057482.6U Expired - Fee Related CN215179396U (en) | 2021-05-18 | 2021-05-18 | Periodic sampling differential pressure densimeter for desulfurization system of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215179396U (en) |
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2021
- 2021-05-18 CN CN202121057482.6U patent/CN215179396U/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: 20211214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |