CN113899491A - Pressure transmitter installation structure of desulfurization absorption tower - Google Patents
Pressure transmitter installation structure of desulfurization absorption tower Download PDFInfo
- Publication number
- CN113899491A CN113899491A CN202010638855.2A CN202010638855A CN113899491A CN 113899491 A CN113899491 A CN 113899491A CN 202010638855 A CN202010638855 A CN 202010638855A CN 113899491 A CN113899491 A CN 113899491A
- Authority
- CN
- China
- Prior art keywords
- pressure transmitter
- valve
- absorption tower
- pipeline
- sampling
- 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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 44
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 33
- 230000023556 desulfurization Effects 0.000 title claims abstract description 33
- 238000009434 installation Methods 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims description 23
- 239000002699 waste material Substances 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 230000037452 priming Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0046—Fluidic connecting means using isolation membranes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
本发明提供一种脱硫吸收塔的压力变送器安装结构和方法，能够避免测量系统浆液固态物沉积堵塞管路，防止浆液污染、腐蚀压力变送器传感器膜片，减小测量误差。所述脱硫吸收塔的压力变送器安装结构具备：压力变送器，通过取样管路、第一阀门与吸收塔连接，在所述阀门与所述压力变送器之间连接有水供给管路，使所述第一阀门与所述压力变送器之间的取样管路中充注水。
The invention provides a pressure transmitter installation structure and method for a desulfurization absorption tower, which can avoid the slurry solid deposit in the measurement system from blocking the pipeline, prevent slurry pollution and corrosion of the pressure transmitter sensor diaphragm, and reduce measurement errors. The pressure transmitter installation structure of the desulfurization absorption tower includes: a pressure transmitter connected to the absorption tower through a sampling pipeline and a first valve, and a water supply pipe is connected between the valve and the pressure transmitter The sampling pipeline between the first valve and the pressure transmitter is filled with water.
Description
Technical Field
The invention relates to a pressure transmitter mounting structure, in particular to a pressure transmitter mounting structure of a desulfurization absorption tower wall.
Background
In the wet flue gas desulfurization process, the absorption tower in the shape of a barrel tank and the slurry in the absorption tower are direct equipment and media for removing sulfur dioxide in flue gas. The production process needs to measure the liquid level of the slurry in the absorption tower, and the measuring method is to install one or more groups of pressure transmitters on the wall of the absorption tower. The prior art has the problems that the slurry can generate solid matters to deposit and block a sampling pipeline of the slurry to be detected; the slurry can pollute and scale and corrode a pressure transmitter diaphragm, so that the error of the pressure transmitter is increased; a slurry with a high temperature can increase pressure transmitter error.
Disclosure of Invention
The invention provides a pressure transmitter mounting structure of a desulfurization absorption tower, which can solve the problem that slurry solid deposits in a measurement system block pipelines.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to the pressure transmitter mounting structure of the desulfurization absorption tower, the pressure transmitter is connected with the absorption tower through the valve, and the sampling pipeline between the pressure transmitter and the valve is connected with the water supply pipeline.
According to the utility model provides a pressure transmitter mounting structure of desulfurization absorption tower owing to be connected with water supply pipeline on the sampling pipe between pressure transmitter and valve, can fill water to filling in the sampling pipe between pressure transmitter and the valve, washes the thick liquid solid state thing of jam in the pipeline, guarantees sampling pipe's noncongestion. Because there is liquid water in the sample pipeline, can completely cut off the contact of thick liquid and pressure transmitter diaphragm, avoid pressure transmitter's diaphragm scale deposit and corroded by the thick liquid to can accurately measure the liquid level or the pressure of the thick liquid in the absorption tower.
Drawings
Fig. 1 is a schematic view of a first pressure transmitter mounting structure of a desulfurization absorption tower according to the present invention.
Fig. 2 is a schematic diagram of a second pressure transmitter mounting structure of the desulfurization absorption tower of the present invention.
Fig. 3 is a schematic view of a third pressure transmitter mounting structure of the desulfurization absorption tower of the present invention.
Fig. 4 is a schematic view of a fourth pressure transmitter mounting structure of the desulfurization absorption tower of the present invention.
Fig. 5 is a schematic view of a fifth pressure transmitter mounting structure of the desulfurization absorption tower of the present invention.
Description of the reference numerals
1 desulfurization absorption tower
2 pressure transmitter
3 trench
11 first valve
12 second valve
13 third valve
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the drawings.
Implementation mode one
Fig. 1 is a schematic view of a first pressure transmitter mounting structure of a desulfurization absorption tower according to the present invention.
The pressure transmitter 2 is connected with the desulfurization absorption tower 1 through a horizontal sampling pipeline, and a first valve 11 is installed on the sampling pipeline. A stop valve can be arranged between the first valve 11 and the desulfurization absorption tower 1, so that the first valve 11 is convenient to overhaul and maintain. A water supply pipeline is arranged on the pipeline between the first valve 11 and the pressure transmitter 2, the water pipeline is connected with the sampling pipeline through a second valve 12, and flushing and water filling are provided for the sampling pipeline between the first valve 11 and the pressure transmitter 2 and at the upstream of the first valve 11. A waste liquid discharge line is provided downstream of the pressure transmitter 2, and a third valve 13 is provided on the waste liquid discharge line. For discharging waste liquid into the trench 3.
Under the state that pressure transmitter 2 is in work, fill water and be used for keeping apart pressure transmitter 2 and sample object's thick liquid, avoid pressure transmitter 2's diaphragm and the contact of thick liquid.
The working procedure is as follows: the second valve 12 is first opened to flush the line to the absorber column to remove deposits or blockages present in the line. The third valve 13 is opened, the first valve 11 is closed, water enters the pipeline between the first valve 11 and the pressure transmitter 2 along the pipeline, and the pipeline between the first valve 11 and the pressure transmitter 2 is washed to eliminate sediment or blockage in the pipeline. The flushed waste liquid is discharged into the trench 3 via the waste liquid discharge line and the third valve 13. After a predetermined time of flushing, the third valve 13 is closed, and after a predetermined time of flushing, the second valve 12 is closed, so that water is sealed in the sampling pipeline from the pressure transmitter 2 to the absorption tower, and the sealed water exists as an isolation medium between the diaphragm of the pressure transmitter 2 and the slurry, so that the diaphragm of the pressure transmitter 2 is prevented from directly contacting the slurry.
The first valve 11, the second valve 12, and the third valve 13 may be automatic valves or manual valves. When the valve is an automatic valve, the automatic operation is performed under the control of a control system. The operation flow can be performed once every predetermined time or according to the field state. In the case that the valve is a manual valve, the operation can be performed according to the operation condition on site.
According to the first embodiment, since the sampling pipe of the pressure transmitter 2 is periodically flushed, it is possible to eliminate deposits or blockages in the sampling pipe and to ensure that the sampling pipe is unobstructed. In addition, because liquid water exists in the sampling pipeline, the slurry can be isolated from being in contact with the diaphragm of the pressure transmitter, the diaphragm of the pressure transmitter is prevented from scaling or being corroded by the slurry, and therefore the liquid level or the pressure of the slurry in the absorption tower can be accurately measured.
Second embodiment
FIG. 2 is a schematic view showing a second pressure transmitter mounting structure of the desulfurizing absorption tower of the present invention. The difference from the first embodiment is that: the pressure transmitter 2 is vertically installed at an upper portion of a downstream of the horizontal sampling pipe, and a third valve 13 is provided at a rear end of the horizontal sampling pipe and constitutes a waste liquid discharge pipe. The other mounting structure is the same as that of the first embodiment.
According to the second embodiment of the present invention, since the pressure transmitter 2 is mounted on the upper portion of the horizontal sampling pipe downstream, it is possible to prevent deposits or blockages from occurring between the diaphragm of the pressure transmitter and the sampling pipe. Even if there is a deposit or a blockage in the connection pipe between the pressure transmitter 2 and the horizontal sampling pipe, it falls into the horizontal sampling pipe by its own weight and is discharged into the trench during the flushing process.
According to the mounting structure of the pressure transmitter 2 of the embodiment, the technical effect of the first embodiment can be achieved, smoothness between the diaphragm of the pressure transmitter 2 and the sampling pipeline can be fully guaranteed, and blockage of the sampling pipeline or deposit existence can be avoided.
Third embodiment
Fig. 3 and 4 are schematic diagrams of pressure transmitter mounting structures three and four of the desulfurization absorption tower of the present invention, respectively. In comparison with the mounting structure of the pressure transmitter 2 of the first and second embodiments, the sampling pipe between the first valve 11 and the pressure transmitter 2 is bent upward by 90 ° or bent downward by 90 °, and the pressure transmitter 2 is mounted at a downstream position of the sampling pipe.
When the sampling line between the pressure transmitter 2 and the desulfurization absorption tower 1 is horizontal, there is a possibility that water sealed in the sampling line as an isolation medium may diffuse into the slurry in the desulfurization absorption tower 1 with the operation time, the isolation medium in the sampling line between the pressure transmitter 2 and the desulfurization absorption tower 1 decreases or disappears, and the sampling line is filled with the slurry to be sampled. Thus, the above technical problem to be solved by the present application still remains.
In view of this, the third embodiment employs the pressure transmitter mounting structure of fig. 3 or 4.
In the case where the slurry has a density less than water as the isolation medium, the pressure transmitter mounting structure of fig. 3 is employed. I.e. the sampling pipe between the first valve 11 and the pressure transmitter 2 is bent vertically downwards by 90 deg.. By bending the sampling pipe 90 ° downward, the water sealed in the sampling pipe of the vertical part is difficult to diffuse into the slurry along the horizontal sampling pipe because its own density is greater than that of the slurry, thereby ensuring that the pipe between the pressure transmitter 2 and the horizontal sampling pipe is reliably sealed and isolated by means of water.
Of course, the bending angle of the sampling line is not limited to 90 °, and other angles may be adopted in the case of ensuring the ability to seal water.
In addition, in the case where the density of the slurry is greater than that of water as an isolation medium, the pressure transmitter mounting structure of fig. 4 is employed. I.e. the sampling pipe between the first valve 11 and the pressure transmitter 2 is bent vertically upwards by 90 deg.. By bending the sampling pipe 90 ° upwards, the water sealed in the sampling pipe of this vertical part is difficult to spread into the slurry along the horizontal sampling pipe because its own density is less than that of the slurry, thereby ensuring that the pipe between the pressure transmitter 2 and the horizontal sampling pipe is reliably sealed and isolated by means of the water.
According to the third embodiment, not only the technical effects of the first embodiment can be achieved, but also the isolation between the pressure transmitter 2 and the slurry can be ensured and the contact between the diaphragm of the pressure transmitter 2 and the slurry can be avoided by selecting either one of the structures regardless of whether the density of the slurry is higher than the density of the isolation medium or lower than the density of the isolation medium. Therefore, the membrane of the pressure transmitter is prevented from scaling or being corroded by the slurry, and the liquid level or the pressure of the slurry in the absorption tower can be accurately measured.
Embodiment IV
Fig. 5 is a schematic view of a fifth pressure transmitter mounting structure of the desulfurization absorption tower of the present invention. Compared to the mounting structure of the pressure transmitter 2 according to the first embodiment, a U-shaped pipe line is provided between the pressure transmitter 2 and the first valve 11.
In the mounting structure of the pressure transmitter 2 according to the fourth embodiment, the sampling pipe is connected to the water supply pipe, extends in the horizontal direction, bends downward by 90 degrees, extends in the horizontal direction, extends by a predetermined length, bends upward by 90 degrees, and has a U-shape that is concave. The pressure transmitter 2 and the third valve 13 are arranged downstream of the upwardly extending sampling line. The pressure transmitter 2 and the third valve 13 may be disposed on a horizontal pipe bent upward by 90 ° and then horizontally. The mounting structure of the pressure transmitter 2 according to the fourth embodiment is not limited to the above-described structure, and may be an n-shape that is bent upward by 90 degrees, then horizontally extended, and then bent downward by 90 degrees after extending a predetermined length, and then convex.
According to the mounting structure of the pressure transmitter 2 of the fourth embodiment, regardless of whether the density of the slurry is greater than or less than the density of the isolation medium, sufficient isolation medium can be ensured to be sealed in the U-shaped pipe of the sampling pipe, isolation of the pressure transmitter 2 from the slurry is ensured, and contact between the diaphragm of the pressure transmitter 2 and the slurry is avoided.
In addition, in the present invention, in the case where the installation position of the pressure transmitter 2 is deviated from the horizontal position to cause a pressure measurement error, the pressure zero point is ensured by zero point adjustment in the pressure transmitter or the control device.
The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the sampling pipe between the first valve and the pressure transmitter is spiral; the water supply line is as close as possible to the first valve 11; the water, the desulfurization absorption tower, the mounting structure of the pressure transmitter, and the like shown in the above embodiments are preferable examples, and other structures that can achieve the object of the present invention may be employed.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638855.2A CN113899491A (en) | 2020-07-07 | 2020-07-07 | Pressure transmitter installation structure of desulfurization absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638855.2A CN113899491A (en) | 2020-07-07 | 2020-07-07 | Pressure transmitter installation structure of desulfurization absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113899491A true CN113899491A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010638855.2A Pending CN113899491A (en) | 2020-07-07 | 2020-07-07 | Pressure transmitter installation structure of desulfurization absorption tower |
Country Status (1)
| Country | Link |
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| CN (1) | CN113899491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754917A (en) * | 2022-03-02 | 2022-07-15 | 创升益世(东莞)智能自控有限公司 | non-Newtonian fluid pressure measurement system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868822A (en) * | 2013-07-29 | 2014-06-18 | 北京朗新明环保科技有限公司 | Density determination device for slurry in wet desulfurization absorption tower |
| CN203908728U (en) * | 2014-06-24 | 2014-10-29 | 济钢集团有限公司 | Gas on-line pressure-acquiring apparatus |
| CN205120523U (en) * | 2015-10-15 | 2016-03-30 | 上海梅思泰克环境股份有限公司 | Flue gas desulfurization system absorbs slurry density value measuring device |
| CN212432407U (en) * | 2020-07-07 | 2021-01-29 | 李凯 | Pressure transmitter mounting structure of desulfurization absorption tower |
-
2020
- 2020-07-07 CN CN202010638855.2A patent/CN113899491A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868822A (en) * | 2013-07-29 | 2014-06-18 | 北京朗新明环保科技有限公司 | Density determination device for slurry in wet desulfurization absorption tower |
| CN203908728U (en) * | 2014-06-24 | 2014-10-29 | 济钢集团有限公司 | Gas on-line pressure-acquiring apparatus |
| CN205120523U (en) * | 2015-10-15 | 2016-03-30 | 上海梅思泰克环境股份有限公司 | Flue gas desulfurization system absorbs slurry density value measuring device |
| CN212432407U (en) * | 2020-07-07 | 2021-01-29 | 李凯 | Pressure transmitter mounting structure of desulfurization absorption tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754917A (en) * | 2022-03-02 | 2022-07-15 | 创升益世(东莞)智能自控有限公司 | non-Newtonian fluid pressure measurement system and method |
| CN114754917B (en) * | 2022-03-02 | 2024-06-04 | 创升益世(东莞)智能自控有限公司 | Non-Newtonian fluid pressure measurement system and method |
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