CN210243630U - Device for online detection of pH value of brine - Google Patents
Device for online detection of pH value of brine Download PDFInfo
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- CN210243630U CN210243630U CN201920764176.2U CN201920764176U CN210243630U CN 210243630 U CN210243630 U CN 210243630U CN 201920764176 U CN201920764176 U CN 201920764176U CN 210243630 U CN210243630 U CN 210243630U
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- saline water
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- brine
- pipeline
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Abstract
The application discloses device of salt solution on-line measuring pH value. The device for detecting the pH value of the brine on line comprises a sampling barrel and a pH meter probe; the side wall of the bottom of the sampling barrel is provided with a saline water inlet which is communicated with the lower part of an outlet valve of the saline water conveying pump through a pipeline; the side wall of the upper part of the sampling barrel is provided with a brine overflow port which is communicated with the front reaction tank through a pipeline; the pH meter probe is arranged on one side of the sampling barrel close to the saline water input port. The device of this application, salt solution sampling point is violently changed to outlet valve below by pump export, and sampling pipeline pressure risees, and the pipeline velocity of flow accelerates, is difficult for blockking up. The position of the pH meter probe is amplified through the sampling barrel, so that saline water at the monitoring point flows stably and uniformly. Adopt the pH value device of this application for pH value detects more accurately, changes the situation that original pH probe was changed once at least every month, and it is also more convenient that pH probe maintenance, calibration, demolition are changed simultaneously.
Description
Technical Field
The application relates to the field of chlor-alkali production equipment, in particular to a device for online detection of pH value of brine.
Background
Primary brine refining procedure in chlor-alkali production, sodium hydroxide is added into a pre-reaction tank to remove Mg2+In order to ensure stable quality of brine, attention is usually paid to the change of the pH value of the pre-reaction tank. As shown in fig. 2, the brine in the pre-reaction tank 22 is generally subjected to on-line pH detection and monitoring by using an on-line pH meter 21, and the brine is pumped to the subsequent process by using a pressure pump 23 under the condition that the pH is ensured to meet the requirement.
In the existing chlor-alkali production, the more conventional online pH meter installation modes comprise flow-through installation, submerged installation, flange installation and pipeline installation. The flow-through installation is a relatively wide mode, and the pH value condition of the brine can be known in real time by adopting the mode. However, in the method, because the salt dissolving process is adopted, crystallization is easily generated in the using process to block a sampling pipeline of the pH meter, so that the pH detection is inaccurate, and the quality of the brine is easily influenced; meanwhile, the pH meter is very easy to damage in the using process.
SUMMERY OF THE UTILITY MODEL
The application aims to solve the problems of the existing flow-through type pH value detection and provides a novel device for online detection of the pH value of saline water.
In order to achieve the above purpose, the following technical scheme is adopted in the application.
The application discloses a device for detecting pH value of brine on line, which comprises a sampling barrel and a pH meter probe; the side wall of the bottom of the sampling barrel is provided with a saline water inlet which is communicated with the lower part of an outlet valve of the saline water conveying pump through a pipeline; the side wall of the upper part of the sampling barrel is provided with a brine overflow port which is communicated with the front reaction tank through a pipeline; the pH meter probe is arranged on one side of the sampling barrel close to the saline water input port.
Preferably, the aperture and conduit of the brine overflow port is larger than the brine input port.
The beneficial effect of this application is: the utility model provides a salt solution on-line measuring pH value device, salt solution sampling point are violently managed by pump export and are changed to outlet valve below after, and sampling pipeline pressure risees, and the pipeline velocity of flow accelerates, is difficult for blockking up. And the position of the pH meter probe is amplified through the sampling barrel, so that saline water at the monitoring point flows stably and uniformly. Adopt the pH value device of this application for pH value detects more accurately, changes the situation that original pH probe was changed once at least every month, and it is also more convenient that pH probe maintenance, calibration, demolition are changed simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for on-line pH value detection of brine in the embodiment of the present application;
FIG. 2 is a schematic diagram showing the monitoring of pH change in a fore reaction tank in the background of the present application.
Detailed Description
The present application is described in further detail below with reference to the following detailed description and the attached drawings, and the following examples are only for understanding and explaining the present application and are not to be construed as limiting the present application.
Examples
The device for online detection of pH value of brine in this embodiment, as shown in FIG. 1, comprises a sampling barrel 1 and a pH meter probe 2; the side wall of the bottom of the sampling barrel 1 is provided with a saline water inlet 11, and the saline water inlet 11 is communicated with the lower part of an outlet valve of the saline water conveying pump through a pipeline; the side wall of the upper part of the sampling barrel 1 is provided with a brine overflow port 12, and the brine overflow port 12 is communicated with the front reaction tank through a pipeline; the pH meter probe 2 is arranged on one side of the sampling barrel 1 close to the saline water input port 11. Wherein, the sampling bucket 1 of this example is a sampling bucket of DN200 × 300; and the aperture and pipe of the brine overflow port 12 are larger than the brine input port 11. The brine inlet of the present example is at a low level and the outlet is at a high point, and the brine is discharged in an overflow manner.
The device for detecting the pH value of the brine on line in the embodiment actually combines the characteristics of pipeline installation and sinking installation. And moreover, the sampling point of the pH meter is moved to the lower part of the outlet valve of the pump from the upper part of the outlet transverse pipe of the pump, so that the flow speed of the pipeline is accelerated, and the blockage is not easy. The position of the probe of the pH meter is amplified by the sampling barrel, so that the saline water at the monitoring point flows stably and uniformly, and the overflow port is amplified by one time, so that the saline water naturally overflows and cannot flow out of the sampling barrel. The device for online detection of pH value of brine in the embodiment enables the pH value detection to be more accurate, and the probe of the pH meter does not need to be replaced frequently. The probe of the pH meter is directly arranged in the sampling barrel, so that the maintenance, the maintenance and the calibration are more convenient; and the device is easy to disassemble and assemble and convenient to replace.
The foregoing is only a preferred embodiment of the present application and is not intended to limit the technical scope of the present application, and those skilled in the art can make modifications and variations within the spirit of the present application, and all modifications, equivalents and modifications of the foregoing embodiments are within the scope of the present application.
Claims (2)
1. The utility model provides a device of salt solution on-line measuring pH value which characterized in that: comprises a sampling barrel (1) and a pH meter probe (2);
a saline water inlet (11) is formed in the side wall of the bottom of the sampling barrel (1), and the saline water inlet (11) is communicated with the lower portion of an outlet valve of the saline water conveying pump through a pipeline; a saline water overflow port (12) is arranged on the side wall of the upper part of the sampling barrel (1), and the saline water overflow port (12) is communicated with the front reaction tank through a pipeline;
the pH meter probe (2) is arranged on one side, close to the saline water inlet (11), in the sampling barrel (1).
2. The apparatus of claim 1, wherein: the aperture and the pipeline of the brine overflow port (12) are larger than the brine input port (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920764176.2U CN210243630U (en) | 2019-05-24 | 2019-05-24 | Device for online detection of pH value of brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920764176.2U CN210243630U (en) | 2019-05-24 | 2019-05-24 | Device for online detection of pH value of brine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210243630U true CN210243630U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920764176.2U Active CN210243630U (en) | 2019-05-24 | 2019-05-24 | Device for online detection of pH value of brine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210243630U (en) |
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2019
- 2019-05-24 CN CN201920764176.2U patent/CN210243630U/en active Active
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