CN212275341U - Online pH sampling device of desulfurization slurry - Google Patents
Online pH sampling device of desulfurization slurry Download PDFInfo
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- CN212275341U CN212275341U CN202021106506.8U CN202021106506U CN212275341U CN 212275341 U CN212275341 U CN 212275341U CN 202021106506 U CN202021106506 U CN 202021106506U CN 212275341 U CN212275341 U CN 212275341U
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Abstract
The utility model discloses an online pH sampling device of desulfurization thick liquid, including the thick liquid pond, transmission pipeline and circulating pump inlet pipeline, transmission pipeline locates between thick liquid pond and the circulating pump inlet pipeline, transmission pipeline includes first transmission pipeline and second transmission pipeline, first transmission pipeline one end links to each other with the thick liquid pond, second transmission pipeline one end links to each other with the first transmission pipeline other end, the second transmission pipeline other end links to each other with circulating pump inlet pipeline, be equipped with the online sample monitor of pH on the first transmission pipeline, all be equipped with the shut-off valve on first transmission pipeline and the second transmission pipeline, the shut-off valve is located between the online sample monitor of thick liquid pond pH on the first transmission pipeline, be equipped with the pipeline sight glass on the first transmission pipeline. The utility model discloses mainly used coal fired power plant wet flue gas desulfurization field specifically provides a sample of being convenient for, and job stabilization nature is high, long service life, the online pH sampling device of desulfurization thick liquid of being convenient for online maintenance, change.
Description
Technical Field
The utility model discloses mainly used coal fired power plant wet flue gas desulfurization field specifically indicates an online pH sampling device of desulfurization thick liquid.
Background
At present, the wet flue gas desulfurization technology of a coal-fired power plant mainly adopts a limestone-gypsum method, and in the flue gas desulfurization process, the control of the pH value of desulfurization slurry in an absorption tower is a key factor for ensuring the efficiency of a desulfurization system and the safe and economic operation of the desulfurization system. The current common online measuring methods of the pH value of the desulfurization slurry mainly comprise a direct method (measuring by inserting a glass electrode into the slurry) and an extraction method (installing a reflux device beside the wall of an absorption tower, generating self-flow by utilizing the height difference of the slurry in the absorption tower, making the slurry flow into the reflux device, and then inserting the glass electrode into the reflux device for measuring).
The pH value measurement of the desulfurization slurry in the existing environmental protection industry has the following problems: (1) the pH value of the external circulation slurry pool is measured, and a sampling point is in the slurry pool, so that the sampling is inconvenient; (2) the sampling probe is arranged in the slurry in the tank, the measurement point of the sample liquid is single, and the error of the measured value is large; (3) the sampling point is arranged on the outlet pipeline of the circulating pump, the flow rate is too high, and the abrasion is serious; (4) the sampling point is arranged on the wall of the tower, and the continuous discharged slurry is manufactured for measurement, so that the slurry is seriously wasted, and the environment is polluted by the wastewater; (5) the sampling point is arranged at the inlet of the circulating pump, so that the flow rate is high, and the maintenance is not suitable.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides a be convenient for sample, job stabilization nature is high, long service life, the online pH sampling device of desulfurization thick liquid of being convenient for online maintenance, change.
The utility model adopts the following technical scheme: the utility model relates to an online pH sampling device of desulfurization slurry, including thick liquid pond, transmission pipeline and circulating pump inlet pipeline, transmission pipeline locates between thick liquid pond and circulating pump inlet pipeline, transmission pipeline includes first transmission pipeline and second transmission pipeline, first transmission pipeline one end links to each other with the thick liquid pond, second transmission pipeline one end links to each other with the first transmission pipeline other end, the second transmission pipeline other end links to each other with circulating pump inlet pipeline, be equipped with pH online sampling monitor on the first transmission pipeline, the monitoring probe of pH online sampling monitor is located first transmission pipeline, utilizes circulating pump inlet pipeline suction stroke to drive the continuous renewal of measured liquid, all be equipped with the shut-off valve on first transmission pipeline and the second transmission pipeline, the shut-off valve is located between thick liquid pond and the pH online sampling monitor on the first transmission pipeline, the pH on-line sampling monitor is positioned between the shutoff valve on the first transmission pipeline and the shutoff valve on the second transmission pipeline, the valves are closed when the breakdown maintenance is convenient, the slurry is prevented from leaking, the pipeline sight glass is arranged on the first transmission pipeline, whether the slurry in the sampling pipe flows or not can be observed through the pipeline sight glass, the flowing speed is also increased, and the flow speed of the detected liquid is controlled to be in the optimal state.
Furthermore, the circulating pump inlet pipelines are provided with two groups, the second transmission pipelines are correspondingly provided with two groups, the second transmission pipelines are respectively arranged on the two groups of circulating pump inlet pipelines, the first transmission pipelines are connected with the two groups of second transmission pipelines through a tee joint, the arrangement of the circulating pump inlet pipelines realizes that sampling points are mutually standby, and the problem that the pH value of the slurry cannot be measured during fault is avoided.
Furthermore, a reducing pipeline is arranged between the cut-off valve on the first transmission pipeline and the pH online sampling monitor, and the diameter of the reducing pipeline along the line from the cut-off valve on the first transmission pipeline to the pH online sampling monitor is gradually increased so as to reduce the flow rate of pipeline slurry, protect the probe of the pH online sampling monitor and prolong the service life.
Furthermore, the pipeline sight glass is arranged between the reducer pipe and the pH online sampling monitor, so that the service life of the pipeline sight glass is prolonged.
Furthermore, the transmission pipeline is connected with the circulating pump inlet pipeline in a welding mode, the transmission pipeline is connected with the tee joint and the reducing pipeline in a welding mode, the transmission pipeline is connected with the shut-off valve in a flange mode, pipeline leakage is avoided through the connecting mode, and quick and convenient maintenance can be achieved through flange connection.
Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: the online desulfurization slurry pH sampling device provides a continuous and stable mounting point for a pH online sampling monitor monitoring probe, is convenient for accurate sampling, continuous and stable sampling and convenient for maintenance, drives slurry to flow under the suction stroke action of an inlet pipeline of a circulating pump, samples in real time and directly measures the pH value of the slurry in the current state, and has small measurement error; in addition, the diameter of the measured point is locally amplified through the arrangement of the reducing pipeline, the flow rate of the slurry is reduced, the abrasion of a monitoring probe of the pH online sampling monitor is reduced, the service life is long, the slurry is sampled in a closed manner, the measured liquid returns to a main slurry pipe after being measured, no waste liquid is generated, no pollution is caused, and meanwhile, the on-line maintenance and replacement can be realized through arranging the shutoff valves in front of and behind the sampling point, and the maintenance is convenient.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of an online pH sampling device for desulfurized slurry according to the present invention;
fig. 2 is a schematic structural diagram of the second transmission pipeline of the online pH sampling device for desulfurized slurry of the present invention.
The system comprises a slurry pool 1, a circulating pump inlet pipeline 2, a first transmission pipeline 3, a second transmission pipeline 4, a PH online sampling monitor 5, a shut-off valve 7, a pipeline sight glass 8, a variable diameter pipeline 9, a tee joint 10 and a flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in figures 1-2, the utility model relates to an online pH sampling device for desulfurization slurry, which comprises a slurry pool 1, a transmission pipeline and a circulating pump inlet pipeline 2, wherein the transmission pipeline is arranged between the slurry pool 1 and the circulating pump inlet pipeline 2, the transmission pipeline comprises a first transmission pipeline 3 and a second transmission pipeline 4, one end of the first transmission pipeline 3 is connected with the slurry pool 1, one end of the second transmission pipeline 4 is connected with the other end of the first transmission pipeline 3, the other end of the second transmission pipeline 4 is connected with the circulating pump inlet pipeline 2, the first transmission pipeline 3 is provided with an online pH sampling monitor 5, a monitoring probe of the online pH sampling monitor 5 is positioned in the first transmission pipeline 3, the measured liquid is driven by the suction stroke of the circulating pump inlet pipeline 2 to be continuously updated, the first transmission pipeline 3 and the second transmission pipeline 4 are both provided with a shut-off valve 6, the shut-off valve 6 on the first transmission pipeline 3 is positioned between the slurry pool 1 and the online pH sampling monitor 5, the pH on-line sampling monitor 5 is positioned between the shut-off valve 6 on the first transmission pipeline 3 and the shut-off valve 6 on the second transmission pipeline 4, the valves are closed when the breakdown maintenance is convenient, the leakage of the slurry is avoided, the pipeline sight glass 7 is arranged on the first transmission pipeline 3, whether the slurry in the sampling pipe flows or not can be observed through the pipeline sight glass 7, the flowing speed is controlled to be in the optimal state, and the flow rate of the detected liquid is controlled to be in the optimal state.
Wherein, circulating pump inlet pipeline 2 is equipped with two sets ofly, and second transmission pipeline 4 corresponds with circulating pump inlet pipeline 2 and is equipped with two sets ofly, and two sets of second transmission pipelines 4 are located respectively on two sets of circulating pump inlet pipeline 2, and first transmission pipeline 3 passes through tee bend 9 with two sets of second transmission pipelines 4 and is connected, and the setting of many circulating pump inlet pipeline 2 realizes that the sampling point is each other for reserve, can't measure the thick liquid pH value when avoiding the trouble. A reducing pipeline 8 is arranged between the cut-off valve 6 on the first transmission pipeline 3 and the pH online sampling monitor 5, and the diameter of the reducing pipeline 8 from the cut-off valve 6 on the first transmission pipeline 3 to the pH online sampling monitor 5 is gradually increased along the line to reduce the flow rate of pipeline slurry, protect a probe of the pH online sampling monitor 5 and prolong the service life. The pipeline sight glass 7 is arranged between the reducer pipe and the pH on-line sampling monitor 5, and the service life of the pipeline sight glass 7 is prolonged. The transmission pipeline is connected with the circulating pump inlet pipeline 2 in a welding mode, the transmission pipeline is connected with the tee joint 9 and the reducing pipeline 8 in a welding mode, and the transmission pipeline is connected with the shut-off valve 6 through the flange 10, so that the pipeline leakage is avoided, and the rapid and convenient maintenance can be realized through the flange 10 connection.
The direction of the arrows in fig. 1 represents the direction of flow of the slurry.
During the specific use, under the effect of circulating pump inlet pipeline 2 suction stroke, thick liquid in the thick liquid pond 1 is transmitted along first transmission pipeline 3 and second transmission pipeline 4, during through reducing pipeline 8 in the thick liquid transmission process, along with the increase of reducing pipeline 8 diameters, with the reduction pipeline thick liquid velocity of flow, thereby protect the pH on-line sampling monitor 5 probe at reducing pipeline 8 rear, increase of service life, in addition, two sets of second transmission pipeline 4 and two sets of circulating pump inlet pipeline 2's setting, the setting of having realized many circulating pump inlet pipeline 2 realizes that the sampling point is each other for reserve, can't measure thick liquid pH value when avoiding the trouble.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an online pH sampling device of desulfurization thick liquid which characterized in that: the device comprises a slurry pool, a transmission pipeline and a circulating pump inlet pipeline, wherein the transmission pipeline is arranged between the slurry pool and the circulating pump inlet pipeline and comprises a first transmission pipeline and a second transmission pipeline, one end of the first transmission pipeline is connected with the slurry pool, one end of the second transmission pipeline is connected with the other end of the first transmission pipeline, the other end of the second transmission pipeline is connected with the circulating pump inlet pipeline, a pH online sampling monitor is arranged on the first transmission pipeline, a monitoring probe of the pH online sampling monitor is positioned in the first transmission pipeline, a shutoff valve is arranged on each of the first transmission pipeline and the second transmission pipeline, the shutoff valve on the first transmission pipeline is positioned between the slurry pool and the pH online sampling monitor, and the pH online sampling monitor is positioned between the shutoff valve on the first transmission pipeline and the shutoff valve on the second transmission pipeline, and the first transmission pipeline is provided with a pipeline sight glass.
2. The online desulfurization slurry pH sampling device according to claim 1, characterized in that: the circulating pump inlet pipelines are provided with two groups, the second transmission pipelines and the circulating pump inlet pipelines are correspondingly provided with two groups, the two groups of second transmission pipelines are respectively arranged on the two groups of circulating pump inlet pipelines, and the first transmission pipelines are connected with the two groups of second transmission pipelines through tee joints.
3. The online desulfurization slurry pH sampling device according to claim 1, characterized in that: and a reducing pipeline is arranged between the shut-off valve on the first transmission pipeline and the pH on-line sampling monitor, and the diameter of the reducing pipeline is gradually increased from the shut-off valve on the first transmission pipeline to the pH on-line sampling monitor along the line.
4. The online desulfurization slurry pH sampling device according to claim 1, characterized in that: the pipeline sight glass is arranged between the reducer pipe and the PH on-line sampling monitor.
5. The online desulfurization slurry pH sampling device according to claim 1, characterized in that: the transmission pipeline is connected with the inlet pipeline of the circulating pump in a welding mode, the transmission pipeline is connected with the tee joint and the reducing pipeline in a welding mode, and the transmission pipeline is connected with the shut-off valve in a flange mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021106506.8U CN212275341U (en) | 2020-06-16 | 2020-06-16 | Online pH sampling device of desulfurization slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021106506.8U CN212275341U (en) | 2020-06-16 | 2020-06-16 | Online pH sampling device of desulfurization slurry |
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| Publication Number | Publication Date |
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| CN212275341U true CN212275341U (en) | 2021-01-01 |
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| CN202021106506.8U Active CN212275341U (en) | 2020-06-16 | 2020-06-16 | Online pH sampling device of desulfurization slurry |
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| CN (1) | CN212275341U (en) |
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