CN211505472U - Device for automatically monitoring quality of circulating water of thermal power plant - Google Patents
Device for automatically monitoring quality of circulating water of thermal power plant Download PDFInfo
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- CN211505472U CN211505472U CN201922170657.3U CN201922170657U CN211505472U CN 211505472 U CN211505472 U CN 211505472U CN 201922170657 U CN201922170657 U CN 201922170657U CN 211505472 U CN211505472 U CN 211505472U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 85
- 238000005070 sampling Methods 0.000 claims abstract description 42
- 238000011010 flushing procedure Methods 0.000 claims abstract description 37
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 21
- 239000000460 chlorine Substances 0.000 claims abstract description 21
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012498 ultrapure water Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A device for automatically monitoring the quality of circulating water of a thermal power plant comprises a detection control cabinet, wherein a display screen is arranged on the front side surface of the detection control cabinet, a sampling port, a flushing port and a water outlet are formed in the detection control cabinet, a sampling pipe and a flushing pipe are arranged in the detection control cabinet, the inlet of the sampling pipe is connected with the sampling port, and a conductivity detection pipeline, a PH detection pipeline and a residual chlorine detection pipeline are connected in parallel between the outlet of the sampling pipe and the water outlet; the inlet and the outlet of the flushing pipe are respectively connected with the flushing port and the outlet of the sampling pipe. The utility model discloses conductivity, PH value and residual chlorine value are imitated in the monitoring, provide the foundation for automatic reagent feeding to reach the purpose of accurate control circulating water quality of water. The utility model can realize the independent detection of each detection pipeline, and has simple and convenient operation; the pipeline system has a clear structure, and is convenient for early-stage debugging and later-stage maintenance; the valves of the pipeline part adopt inlet high-quality components, and the system works reliably and stably.
Description
Technical Field
The utility model belongs to the technical field of thermal power unit monitoring, concretely relates to automatic monitoring device of thermal power plant's circulating water quality of water.
Background
The circulating cooling water is a large item of water used in industrial water, and the consumption of the circulating cooling water in the thermal power industry accounts for 80% of the total water used in enterprises. Since the introduction of a water quality stabilization treatment technology in circulating water treatment in the end of 70 s in the thermal power industry, the stability of the circulating water is always one of key monitoring indexes. However, the monitoring of the stability of the circulating cooling water quality in the thermal power industry is still finished in a manual test analysis mode at present, and a real-time online continuous monitoring means is not provided, so that the monitoring of the stability of the circulating cooling water quality is in a blind state. Some power plants therefore have the problem that circulating water monitoring is out of control, scaling and corrosion conditions of a condenser copper tube occur, acid washing has to be carried out, and economic loss is tens of millions; and some power plants adopt a mode of reducing concentration rate to operate so as to avoid scaling, thereby greatly wasting water resources and being inconsistent with the national situation of water resource shortage in China. In view of this, research on equipment capable of automatically monitoring the quality of circulating water of a thermal power plant is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide an automatic monitoring device of thermal power plant's circulating water quality of water, the device can realize the water quality monitoring to the circulating water, and sampling point is rationally distributed, and flow control is accurate, adjust sensitive, realize automatic control through PID, has conductivity, PH value and chlorine residue to transfinite the warning, need not artificial intervention.
In order to solve the technical problem, the utility model adopts the following technical scheme: a device for automatically monitoring the quality of circulating water of a thermal power plant comprises a detection control cabinet, wherein a display screen is arranged on the front side surface of the detection control cabinet, a sampling port, a flushing port and a water outlet are formed in the detection control cabinet, a sampling pipe and a flushing pipe are arranged in the detection control cabinet, the inlet of the sampling pipe is connected with the sampling port, and a conductivity detection pipeline, a PH detection pipeline and a residual chlorine detection pipeline are connected in parallel between the outlet of the sampling pipe and the water outlet; the inlet and the outlet of the flushing pipe are respectively connected with the flushing port and the outlet of the sampling pipe.
The conductivity detection pipeline is sequentially provided with a first stop valve, a first filter, a first pressure reducing valve, a first pressure gauge, a first diaphragm valve, a first flowmeter, a conductivity meter and a first one-way valve along the water flow direction.
And a second stop valve, a second filter, a second pressure reducing valve, a second pressure gauge, a second diaphragm valve, a second flowmeter, a PH gauge and a second one-way valve are sequentially arranged on the PH detection pipeline along the water flow direction.
And a third stop valve, a third filter, a third pressure reducing valve, a third pressure gauge, a third diaphragm valve, a third flowmeter, a residual chlorine gauge and a third one-way valve are sequentially arranged on the residual chlorine detection pipeline along the water flow direction.
And a fourth stop valve, a fourth filter, a fourth check valve and a total pressure gauge are sequentially arranged on the sampling tube along the water flow direction.
The outlet of the flushing pipe is connected to the sampling pipe between the fourth check valve and the total pressure gauge, and a fifth stop valve, a fifth filter and a fifth check valve are sequentially arranged on the flushing pipe along the water flow direction.
Adopt above-mentioned calculation scheme, the utility model discloses in be provided with the flushing pipe, wash through sampling tube, conductivity detection pipeline, PH detection pipeline and the chlorine residue detection pipeline in the flushing pipe pair device, guaranteed the exactness of the circulating water of required monitoring, conductivity detection pipeline, PH detection pipeline and chlorine residue detection pipeline have solitary decompression and flow control function simultaneously, have guaranteed every measured data's accuracy.
The detection control cabinet flushing port and the sampling port are water inlet holes.
The flushing port is independently connected with high-purity water to prevent the detection result of the sampling water from being influenced. Meanwhile, the flushing pipe is connected to the detection pipeline after being introduced into the monitoring control cabinet through the fifth stop valve, the fifth filter and the fifth one-way valve, the fifth stop valve controls the on-off of the flushing pipe, the fifth filter performs secondary filtration on introduced high-purity water again, and the fifth one-way valve can prevent sampled water from entering the flushing pipe and affecting the water quality of the flushing pipe.
The sampling port directly introduces sampling water from the water inlet pipe of the condenser, the circulating water sampling point is arranged on the water inlet pipe of the condenser, and the pressure (about 0.2 MPa) of the water inlet pipe of the condenser is utilized for sampling without arranging a pressure pump. And after entering the detection control cabinet, the sampled water passes through a fourth stop valve, a fourth filter, a fourth one-way valve and a total pressure gauge and then is connected into a conductivity detection pipeline, a PH detection pipeline and a residual chlorine detection pipeline to respectively detect the conductivity, the PH value and the residual chlorine. The pressure of sample water can be detected in real time by the total pressure gauge, and the influence on a rear-stage detection pipeline caused by overlarge pressure is prevented. Meanwhile, each detection pipeline is provided with a stop valve for controlling the connection and disconnection of a single detection pipeline, so that the detection of any data of conductivity, PH value and residual chlorine can be realized; the filter valve is used for filtering the sampled water again, so that the influence of the sampled water on the detection instrument is prevented; each monitoring pipeline adjusts the pressure through an independent pressure reducer, and the requirements of the detecting instrument are met; the flow is adjusted through the diaphragm valve to meet the requirement of the detection instrument; meanwhile, after passing through the detection instruments (a conductivity meter, a PH meter and a residual chlorine meter), each monitoring pipeline passes through a one-way valve, so that the sampled water detected by other pipelines is prevented from returning to the detection pipeline. And the wastewater detected by each detection pipeline is converged and then directly discharged into a wastewater well through a water outlet.
The conductivity, the PH value and the residual chlorine value that detect can show on the display screen of monitoring control cabinet front side, convenient real-time observation, detect data upload power plant's DCS system simultaneously, realize the calculation of acidification and dosing through the data that detect in the aspect of the convenient power plant.
To sum up, the utility model discloses conductivity, PH value and residual chlorine value are imitated in the monitoring, provide the basis for the automatic reagent feeding to reach the purpose of accurate control circulating water quality of water. The utility model can realize the independent detection of each detection pipeline, and has simple and convenient operation; the pipeline system has a clear structure, and is convenient for early-stage debugging and later-stage maintenance; the valves of the pipeline part adopt inlet high-quality components, and the system works reliably and stably.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the utility model discloses a device for automatically monitoring the quality of circulating water of a thermal power plant, including detection switch board 1, be provided with the display screen on the detection switch board 1 leading flank, be equipped with sample connection 2, flushing port 3 and outlet 4 on the detection switch board 1, detection switch board 1 is inside to be provided with sampling tube 5 and flushing pipe 6, the import of sampling tube 5 is connected with sample connection 2, parallelly connected conductivity detection pipeline 7, PH detection pipeline 8 and chlorine residue detection pipeline 9 between the export of sampling tube 5 and outlet 4; the inlet and outlet of the flushing pipe 6 are connected with the flushing port 3 and the outlet of the sampling pipe 5 respectively.
The conductivity detection pipeline 7 is provided with a first stop valve 10, a first filter 11, a first pressure reducing valve 12, a first pressure gauge 13, a first diaphragm valve 14, a first flowmeter 15, a conductivity meter 16 and a first one-way valve 17 in sequence along the water flow direction.
The PH detection pipeline 8 is sequentially provided with a second stop valve 18, a second filter 19, a second pressure reducing valve 20, a second pressure gauge 21, a second diaphragm valve 22, a second flowmeter 23, a PH gauge 24 and a second one-way valve 25 along the water flow direction.
The residual chlorine detection pipeline 9 is provided with a third stop valve 26, a third filter 27, a third pressure reducing valve 28, a third pressure gauge 29, a third diaphragm valve 30, a third flow meter 31, a residual chlorine gauge 32 and a third check valve 33 in sequence along the water flow direction.
The sampling pipe 5 is provided with a fourth stop valve 34, a fourth filter 35, a fourth check valve 36 and a total pressure gauge 37 in sequence along the water flow direction.
The outlet of the flushing pipe 6 is connected to the sampling pipe 5 between the fourth check valve 36 and the total pressure gauge 37, and a fifth stop valve 38, a fifth filter 39 and a fifth check valve 40 are sequentially arranged on the flushing pipe 6 along the water flow direction.
The utility model discloses in be provided with flushing pipe 6, wash through sampling tube 5, conductivity detection pipeline 7, PH detection pipeline 8 and chlorine residue detection pipeline 9 of flushing pipe 6 in to the device, guaranteed the exactness of the circulating water of required monitoring, conductivity detection pipeline 7, PH detection pipeline 8 and chlorine residue detection pipeline 9 have solitary decompression and flow control function simultaneously, have guaranteed every measured data's accuracy.
The washing port 3 and the sampling port 2 of the detection control cabinet 1 are water inlet holes.
The flushing port 3 is independently connected with high-purity water to prevent the detection result of the sampled water from being influenced. Meanwhile, the flushing pipe 6 is connected with the detection pipeline after being introduced into the monitoring control cabinet through the fifth stop valve 38, the fifth filter 39 and the fifth check valve 40, the fifth stop valve 38 controls the on-off of the flushing pipe 6, the fifth filter 39 carries out secondary filtration on introduced high-purity water again, and the fifth check valve 40 can prevent sampled water from entering the flushing pipe 6 to influence the water quality of the flushing pipe 6.
The sampling port 2 directly introduces sampling water from the water inlet pipe of the condenser, the sampling point of the circulating water is arranged on the water inlet pipe of the condenser, and the pressure (about 0.2 MPa) of the water inlet pipe of the condenser is utilized for sampling without arranging a pressure pump. After entering the detection control cabinet 1, the sampled water passes through a fourth stop valve 34, a fourth filter 35, a fourth check valve 36 and a total pressure gauge 37 and then is connected to the conductivity detection pipeline 7, the PH detection pipeline 8 and the residual chlorine detection pipeline 9 to respectively detect the conductivity, the PH value and the residual chlorine. The total pressure gauge 37 can detect the pressure of the sampled water in real time, and the influence on a rear-stage detection pipeline caused by overlarge pressure is prevented. Meanwhile, each detection pipeline is provided with a stop valve for controlling the connection and disconnection of a single detection pipeline, so that the detection of any data of conductivity, PH value and residual chlorine can be realized; the filter valve is used for filtering the sampled water again, so that the influence of the sampled water on the detection instrument is prevented; each monitoring pipeline adjusts the pressure through an independent pressure reducer, and the requirements of the detecting instrument are met; the flow is adjusted through the diaphragm valve to meet the requirement of the detection instrument; meanwhile, after passing through the detection instruments (the conductivity meter 16, the PH meter 24 and the residual chlorine meter 32), each monitoring pipeline passes through a one-way valve, so that the sampled water detected by other pipelines is prevented from returning to the detection pipeline. The wastewater detected by each detection pipeline is converged and then directly discharged into a wastewater well through a water outlet 4.
The conductivity, the PH value and the residual chlorine value that detect can show on the display screen of monitoring control cabinet front side, convenient real-time observation, detect data upload power plant's DCS system simultaneously, realize the calculation of acidification and dosing through the data that detect in the aspect of the convenient power plant.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (6)
1. The utility model provides an automatic monitor device of thermal power plant's circulating water quality of water which characterized in that: the device comprises a detection control cabinet, wherein a display screen is arranged on the front side surface of the detection control cabinet, a sampling port, a flushing port and a water outlet are arranged on the detection control cabinet, a sampling pipe and a flushing pipe are arranged in the detection control cabinet, the inlet of the sampling pipe is connected with the sampling port, and a conductivity detection pipeline, a PH detection pipeline and a residual chlorine detection pipeline are connected in parallel between the outlet of the sampling pipe and the water outlet; the inlet and the outlet of the flushing pipe are respectively connected with the flushing port and the outlet of the sampling pipe.
2. The device for automatically monitoring the quality of circulating water of a thermal power plant according to claim 1, characterized in that: the conductivity detection pipeline is sequentially provided with a first stop valve, a first filter, a first pressure reducing valve, a first pressure gauge, a first diaphragm valve, a first flowmeter, a conductivity meter and a first one-way valve along the water flow direction.
3. The device for automatically monitoring the quality of circulating water of a thermal power plant according to claim 1, characterized in that: and a second stop valve, a second filter, a second pressure reducing valve, a second pressure gauge, a second diaphragm valve, a second flowmeter, a PH gauge and a second one-way valve are sequentially arranged on the PH detection pipeline along the water flow direction.
4. The device for automatically monitoring the quality of circulating water of a thermal power plant according to claim 1, characterized in that: and a third stop valve, a third filter, a third pressure reducing valve, a third pressure gauge, a third diaphragm valve, a third flowmeter, a residual chlorine gauge and a third one-way valve are sequentially arranged on the residual chlorine detection pipeline along the water flow direction.
5. The device for automatically monitoring the quality of circulating water of a thermal power plant according to claim 1, characterized in that: and a fourth stop valve, a fourth filter, a fourth check valve and a total pressure gauge are sequentially arranged on the sampling tube along the water flow direction.
6. The device for automatically monitoring the quality of circulating water of a thermal power plant according to claim 1, characterized in that: the outlet of the flushing pipe is connected to the sampling pipe between the fourth check valve and the total pressure gauge, and a fifth stop valve, a fifth filter and a fifth check valve are sequentially arranged on the flushing pipe along the water flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922170657.3U CN211505472U (en) | 2019-12-06 | 2019-12-06 | Device for automatically monitoring quality of circulating water of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922170657.3U CN211505472U (en) | 2019-12-06 | 2019-12-06 | Device for automatically monitoring quality of circulating water of thermal power plant |
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| Publication Number | Publication Date |
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| CN211505472U true CN211505472U (en) | 2020-09-15 |
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| CN201922170657.3U Active CN211505472U (en) | 2019-12-06 | 2019-12-06 | Device for automatically monitoring quality of circulating water of thermal power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894993A (en) * | 2022-06-15 | 2022-08-12 | 华能山东发电有限公司白杨河发电厂 | Industrial circulating water online monitoring device and monitoring method |
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2019
- 2019-12-06 CN CN201922170657.3U patent/CN211505472U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894993A (en) * | 2022-06-15 | 2022-08-12 | 华能山东发电有限公司白杨河发电厂 | Industrial circulating water online monitoring device and monitoring method |
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