CN116203209A - Condensate water pH value shunt monitoring system - Google Patents
Condensate water pH value shunt monitoring system Download PDFInfo
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- CN116203209A CN116203209A CN202310423434.1A CN202310423434A CN116203209A CN 116203209 A CN116203209 A CN 116203209A CN 202310423434 A CN202310423434 A CN 202310423434A CN 116203209 A CN116203209 A CN 116203209A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1893—Water using flow cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/302—Electrodes, e.g. test electrodes; Half-cells pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Electrochemistry (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a condensate water pH value shunt monitoring system, which comprises one end of an electric valve, wherein the electric valve is hermetically arranged on a condensate water inlet pipe, the other end of the electric valve is hermetically connected with a first through position of a three-way joint through a pipeline, a second through position of the three-way joint is connected to a water tank for storing condensate water through a main pipeline, a third through position of the three-way joint is connected with a stop valve through a pipeline, the other end of the stop valve is connected to a tank water inlet of a pH value measuring device through a pipeline, a tank water outlet of the pH value measuring device is connected to the water tank through a detection pipeline, the stop valve is arranged in the middle of the detection pipeline, and a pH measuring instrument and the electric valve are connected into a DCS system through communication wires. The invention solves the technical problems of high temperature and high pressure, short service life of the instrument, inaccurate detection and the like of the existing condensate water PH detection environment, and has the advantages of high accuracy of detection data, strong timeliness and long service life of the detection instrument.
Description
Technical Field
The invention belongs to the technical field of condensate water recycling system equipment.
Background
The first-effect condensate water recycling of the multi-effect evaporator is widely applied to boiler makeup water as an energy-saving project of 'energy consumption double control'. However, due to the characteristics of the production materials such as the evaporated sodium sulfide solution, the first-effect evaporated sodium sulfide solution has strong corrosiveness, and the aqueous solution is strongly alkaline, if the operation liquid level is improper, the alkali leakage condition is easy to occur, so that condensed water is slightly alkaline and enters the boiler drum, the water supply quality cannot be ensured, and the service life of the boiler is directly influenced. The condensed water is conveyed to a boiler workshop by a high-pressure pump in a long distance, the temperature is about 80-100 ℃, and the pressure is 0.5-0.6mpa. Therefore, in order to realize efficient and safe operation of equipment, the online PH monitor is arranged on the condensate water conveying pipeline to measure the acid-base value of condensate water on line, but the online PH monitor is short in service life and insufficient in monitoring and alarming post-treatment procedures and time due to the influence of high temperature and high pressure of condensate water, so that the device is not convenient to replace and install, and the expected effect cannot be achieved.
The temperature and pressure resistance of the traditional electrode PH measurement monitoring probe in the market are basically within the range of less than or equal to 80 ℃ and less than or equal to 0.5mpa, and if one level of temperature and pressure resistance is needed, the manufacturing cost is very high. In order to detect the PH value of the flowing medium in the pipeline, the conventional probe is directly arranged on the pipeline of the pipeline, the medium in the pipeline is conveyed by a pump body, the conveying distance is long, certain temperature and pressure exist, the service life of the electrode probe is shortened and the precision is deviated due to various factors, the labor intensity is increased by on-site real-time monitoring, and the quality of the flowing medium cannot be guaranteed.
In recent years, the domestic patent database discloses some similar technical reports of pH value measuring device systems: the utility model provides a ZL2018211065107, [ name ] pH valve tester, [ publication No. ] CN208459380U discloses a pH valve tester, including pH valve tester body, pH valve tester body contains casing and probe, and this pH valve tester still includes limiting plate, actuating mechanism and guiding mechanism. However, the device still cannot process the high-temperature high-pressure water pH value detection, and the problems of short service life and inaccurate detection of the instrument exist.
Disclosure of Invention
The invention provides a condensate water pH value diversion monitoring system which is accurate and timely in detection, long in instrument service life and convenient to overhaul, and solves the technical problems of high temperature and high pressure in the existing condensate water pH value detection environment, short in instrument service life, inaccurate in detection and the like.
The invention provides a condensate water pH value shunt monitoring system, which comprises a water tank for storing condensate water, a condensate water inlet pipe for circulating and refluxing the condensate water, an electric valve arranged on the condensate water inlet pipe and used for controlling the condensate water to circulate, and a pH measuring instrument for measuring the pH value of the condensate water. PH measuring device includes PH measuring instrument, storage water tank, cooling device, box water inlet, box delivery port, and PH measuring instrument inserts storage water tank inside from storage water tank top, and PH measuring instrument and storage water tank junction seal treatment have been seted up to the bottom of storage water tank, and the box delivery port has been seted up at the top of storage water tank, and the cooling device is installed to storage water tank internally mounted, and cooling water flows in the cooling device. One end sealing installation of motorised valve is on the comdenstion water inlet tube, and the other end of motorised valve passes through the first logical position of pipeline sealing connection three way connection, and three way connection's second general position is connected to the water pitcher that stores the comdenstion water through the trunk line, and three way connection's third general position is connected with the stop valve through the pipeline installation, and the other end of stop valve is connected to pH valve measuring device's box water inlet through the pipeline installation. The box body water outlet of the PH value measuring device is connected to the water tank through a detection pipeline, a stop valve is arranged in the middle of the detection pipeline, the PH measuring instrument and the electric valve are connected into the DCS through communication wires, signals, flow charts and configurations monitored by the PH measuring instrument are transmitted into the DCS, and an operation interface of the DCS is dynamically monitored in real time.
According to the invention, a detection pipeline is led out from the main conveying pipeline, a cooling device is additionally arranged to enable condensate water to freely flow into the water storage tank body, and the PH value is measured in the water storage tank body, so that the temperature and pressure reduction effect is realized, signals, flowcharts and configurations monitored by the instrument are integrated into the DCS system, the operation interface is dynamically monitored in real time, and the water quality of the boiler is greatly ensured after the device is used according to the upper and lower limits and the high and low alarm early warning of the set process requirements, the service life of equipment is prolonged, the cost is reduced, and the whole equipment is enabled to operate efficiently and safely. The technical problems of high temperature and high pressure, short service life of the instrument, inaccurate detection and the like of the existing condensate water PH detection environment are solved, and the condensate water PH detection system has the advantages of high accuracy of detection data, high timeliness and long service life of the detection instrument.
Drawings
Fig. 1 is a schematic diagram of the system architecture of the present invention.
FIG. 2 is a schematic diagram of the pH value measuring device of the present invention.
Wherein: 1-condensate water inlet pipe, 2-electric valve, 3-stop valve, 4-PH value measuring device, 41-PH measuring instrument, 42-water storage tank, 43-cooling device, 44-tank water inlet, 45-tank water outlet, 5-three-way joint, 6-main pipeline, 7-detection pipeline, 8-water tank and 9-DCS system.
Description of the embodiments
The invention will be further described with reference to the following specific drawings and examples.
As shown in fig. 1-2, the invention mainly comprises a water tank 8 for storing condensate water, a condensate water inlet pipe 1 for condensate water circulation and reflux, an electric valve 2 which is arranged on the condensate water inlet pipe 1 and is used for controlling condensate water circulation, a PH measuring instrument 41 for measuring condensate water PH value, a PH measuring device 4 comprises the PH measuring instrument 41, a water storage tank 42, a cooling device 43, a tank water inlet 44 and a tank water outlet 45, the PH measuring instrument 41 is inserted into the water storage tank 42 from the top of the water storage tank 42, sealing treatment is realized by adopting a sealing gasket at the joint of the PH measuring instrument 41 and the water storage tank 42, the condensate water is prevented from overflowing from the water storage tank 42, a tank water inlet 44 is arranged at the bottom of the water storage tank 42, a tank water outlet 45 is arranged at the top of the water storage tank 42, a cooling device 43 is arranged in the water storage tank 42, one end of the electric valve 2 is hermetically arranged on the condensate water inlet pipe 1, the other end of the electric valve 2 is hermetically connected with a first through a pipeline, a second through-way position of the three-way joint 5 is connected to the water tank 8 through a main pipeline 6, a third-way joint 5 is connected with a stop valve 3 through a pipeline, the other end of the stop valve 3 is connected with the PH measuring device through a pipeline 4 through a pipeline, the other end of the stop valve 3 is connected with a DCS (DCS) through a dynamic signal monitoring system, the PH measuring system is connected with the PH measuring instrument 9, a dynamic system is connected with the PH measuring system through a DCS (DCS) 9, a monitoring system is connected with the PH measuring device 9, a dynamic system is connected with the PH measuring system is 9, and a system is connected with the dynamic system is connected with the PH measuring system through a monitoring system through a pipeline 9, and a system is 9, and has a monitoring system is connected to a system through a system, and has 9.
During operation, the DCS system 9 controls the electric valve 2 to open a valve, condensed water flows in from the condensed water inlet pipe 1, flows into the water tank 8 for storing the condensed water through the electric valve 2 and the three-way joint 5 through the main pipeline 6 respectively, flows into the water storage tank 42 through the stop valve 3 and the tank water inlet 44, overflows from the tank water outlet 45 of the water storage tank 42 and flows into the water tank 8 through the detection pipeline 7 and the stop valve 3, the condensed water is cooled and reduced in the water storage tank 42 through the cooling device 43, the temperature and pressure reducing effect is achieved, the PH value of the condensed water is measured by the PH meter 41, the monitored signals, the flow chart and the configuration are transmitted into the DCS system 9, the operation interface of the DCS system 9 is dynamically monitored in real time, and the upper limit and the lower limit and the high-low alarm are early-warning according to the set process requirements. When the PH value of the condensate water approaches to the early warning value, the voice sound-light alarm informs an operator to verify, when the PH value touches the set value, the electric valve 2 is automatically closed to cut off circulation until the condensate water is detected to be qualified, and then the condensate water is automatically opened. The device guarantees the water quality of boiler greatly after using, promotes the life of equipment and reduces the cost, makes whole equipment high-efficient safe operation.
Claims (1)
1. The utility model provides a comdenstion water pH value reposition of redundant personnel monitored control system, includes water pitcher (8) that are used for storing the comdenstion water for comdenstion water circulation backward flow comdenstion water inlet tube (1), installs on comdenstion water inlet tube (1) and is used for controlling electric valve (2) that the comdenstion water circulate, is used for measuring PH measuring instrument (41) of comdenstion water pH value, its characterized in that: PH measuring device (4) including PH measuring instrument (41), storage water tank (42), cooling device (43), box water inlet (44), box delivery port (45), PH measuring instrument (41) inserts storage water tank (42) inside from storage water tank (42) top, box water inlet (44) have been seted up to the bottom of storage water tank (42), box delivery port (45) have been seted up at the top of storage water tank (42), storage water tank (42) internally mounted has cooling device (43), the one end sealing mounting of motorised valve (2) is on comdenstion water inlet tube (1), the first position of tee bend joint (5) is passed through to the pipeline sealing connection to the other end of motorised valve (2), the second position of tee bend joint (5) is connected to water tank (8) of storing comdenstion water through trunk line (6), the third position of tee bend joint (5) is connected with stop valve (3) through the pipeline installation, the other end of stop valve (3) is connected to box water inlet (44) of PH measuring device (4) through pipeline installation, box delivery port (45) of PH measuring device (4) are connected to water tank (7) through detection pipeline (7) and are connected to water tank (8) at detection valve (7), the PH measuring instrument (41) and the electric valve (2) are connected into the DCS system (9) through communication wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310423434.1A CN116203209A (en) | 2023-04-20 | 2023-04-20 | Condensate water pH value shunt monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310423434.1A CN116203209A (en) | 2023-04-20 | 2023-04-20 | Condensate water pH value shunt monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN116203209A true CN116203209A (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310423434.1A Pending CN116203209A (en) | 2023-04-20 | 2023-04-20 | Condensate water pH value shunt monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117398788A (en) * | 2023-10-27 | 2024-01-16 | 湖北中圣节水股份有限公司 | Industrial waste gas washing tower with tail probe and capable of monitoring pH value |
-
2023
- 2023-04-20 CN CN202310423434.1A patent/CN116203209A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117398788A (en) * | 2023-10-27 | 2024-01-16 | 湖北中圣节水股份有限公司 | Industrial waste gas washing tower with tail probe and capable of monitoring pH value |
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