Multi-parameter water quality on-line monitoring device

Abstract

A kind of multi-parameter water quality on-line monitoring device, it is related to water treatment technical field, the technical scheme including monitoring pipeline, monitoring module and filter module is used, monitoring module includes turbidity monitor, corrosion rate monitor, pH monitor, conductivity monitor, electromagnetic flowmeter;Filter module includes shell, shell is provided with water inlet pipe and two water outlet pipes, two water outlet pipes are connected to the water inlet, water outlet of monitoring pipeline respectively;Shell inner wall is also provided with two valve seats, shell is provided with valve stem, valve stem is provided with two valve cores and filter seat, and filter is provided with filter screen;When one valve core cooperates with one valve seat to form sealing pair, filter seat cooperates with another valve seat.This utility model can realize the filtration to circulating water and backwash filter screen using circulating water, avoid frequent replacement of filter screen;Filter module shell volume is smaller, can be integrated in same box with monitoring pipeline and multiple monitors, reduce floor area.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a multi-parameter online water quality monitoring device. Background Technology

[0002] As environmental quality standards and pollution discharge standards for water quality control indicators become increasingly stringent, large industrial water users such as thermal power plants are paying more and more attention to the real-time monitoring and effective management of key water quality, especially for circulating cooling water systems that use seawater as makeup water. These systems have high salinity, hardness, and alkalinity, requiring further monitoring. Current technologies often employ centralized monitoring, arranging multiple water quality sensors in a single pipeline for easy maintenance, as exemplified by the online automatic water quality monitoring device disclosed in CN213455585U. However, in circulating cooling water systems using seawater as makeup water, the high salinity of seawater causes scale buildup on the sensors. Furthermore, the high microbial content and variety of microorganisms in seawater lead to the production of large amounts of slime, which binds suspended solids in the circulating water, forming sludge and accelerating scale formation. To address this issue, filtration equipment is typically added to the pipeline to filter impurities. However, cleaning conventional filtration equipment requires opening the equipment for cleaning the filter media, which can disrupt normal operation with frequent cleaning. Self-cleaning filters, on the other hand, are often bulky and inconvenient to install due to space limitations. Utility Model Content

[0003] In view of the problems of high replacement frequency of filter media in conventional filtration equipment and large size of self-cleaning filters in existing technical solutions, this utility model provides a multi-parameter online water quality monitoring device.

[0004] This utility model provides the following technical solution: a multi-parameter online water quality monitoring device, comprising: The monitoring pipeline is equipped with shut-off valves at both its inlet and outlet. The monitoring module includes a turbidity monitor, a corrosion rate monitor, a pH monitor, a conductivity monitor, and an electromagnetic flow meter, which are arranged sequentially along the monitoring pipeline. A filter module includes a housing with an inlet pipe and two outlet pipes. The two outlet pipes are respectively located on both sides of the inlet pipe and connected to the inlet and outlet of the monitoring pipe. The inner wall of the housing also has two valve seats, positioned between the two outlet pipes and the inlet pipe. The housing has a valve stem that moves linearly along its central axis. The valve stem has two valve cores and a filter seat, and the filter is equipped with a filter screen. The filter seat is located between the two valve seats, with each side of the filter seat engaging with one of the two valve seats. The two valve cores are located on opposite sides of the two valve seats, and each valve seat engages with one of the two valve cores. When one valve core engages with one valve seat to form a sealing pair, the filter seat engages with the other valve seat.

[0005] Preferably, the monitoring module further includes a water pressure gauge installed on the monitoring pipeline.

[0006] Preferably, the monitoring pipeline includes elbows, straight sections, and tees. Multiple elbows connect multiple straight sections in an S-shape, and the multiple straight sections are respectively connected to the water pressure gauge, corrosion rate monitor, pH monitor, and conductivity monitor via tees.

[0007] Preferably, both of the water outlet pipes are equipped with a one-way valve.

[0008] Preferably, the housing is further provided with a bracket, the valve stem is threadedly connected to the bracket, and the valve stem is also provided with a handwheel.

[0009] Preferably, the housing includes a first tee pipe, a second tee pipe, and a third tee pipe connected in sequence. The first tee pipe is connected to a first cap, which is rotatably connected to and slides relative to the valve stem. The third tee pipe is connected to a second cap, and the valve seat is provided on the side of the first tee pipe and the third tee pipe facing the second tee pipe.

[0010] Preferably, the two valve seats are symmetrical about the central axis of the second three-way pipe, the two valve cores are symmetrical about the central axis of the filter seat, and the distance between the two valve cores and the filter seat is the same.

[0011] Preferably, the filter seat includes an inner ring and an outer ring, and a plurality of support rods and the filter screen are disposed between the inner ring and the outer ring.

[0012] Preferably, the water inlet pipe is also equipped with a three-way valve, one port of which is connected to a flushing water pipe.

[0013] Preferably, the monitoring pipe, shut-off valve, housing, valve seat, and filter seat are made of rigid polyvinyl chloride.

[0014] The beneficial effects of this utility model are: multiple water quality monitoring instruments are centrally arranged, reducing maintenance workload; two pairs of sealing pairs are set in the filter module housing. When one valve core and one valve seat cooperate to form a seal, the filter seat cooperates with the other valve seat, and the valve stem completes the switching of the sealing pairs, thereby realizing the filtration of circulating water and the backwashing of the filter screen with circulating water, avoiding frequent replacement of the filter screen; the filter module housing is small in size and can be integrated with the monitoring pipeline and multiple monitoring instruments in the same box, reducing the footprint. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of a monitoring device.

[0016] Figure 2 This is a schematic diagram of one embodiment of a filter module.

[0017] Figure 3 This is a schematic diagram of one embodiment of the filter holder.

[0018] Reference numerals: 10. Monitoring pipe; 11. Elbow; 12. Straight section; 13. T-joint; 14. Shut-off valve; 21. Water pressure gauge; 22. Turbidity monitor; 23. Corrosion rate monitor; 24. pH monitor; 25. Conductivity monitor; 26. Electromagnetic flow meter; 30. Filter module; 31. Housing; 311. First t-joint; 312. Second t-joint; 313. Third t-joint; 314. First cover; 315. Second cover; 316. Bracket; 317. Handwheel; 32. Valve stem; 321. First valve core; 322. Second valve core; 323. Filter base; 33. Inlet pipe; 34. Outlet pipe; 351. First valve seat; 352. Second valve seat; 40. Box body. Detailed Implementation

[0019] The embodiments of this utility model will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement them after reading this specification. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0020] This utility model provides a multi-parameter online water quality monitoring device, including a monitoring pipe 10 installed inside a housing 40, a monitoring module installed on the monitoring pipe 10, and a filter module 30 for filtering the water entering the monitoring pipe 10.

[0021] Please refer to Figure 1The monitoring pipeline 10 includes elbows 11, straight sections 12, and tee pipes 13. Multiple elbows 11 connect multiple straight sections 12 in an S-shape, and tee pipes 13 are installed on the straight sections 12 to connect various water quality monitoring instruments. Shut-off valves 14 are also installed at the inlet and outlet of the monitoring pipeline 10. Preferably, the monitoring pipeline 10 and the shut-off valves are made of corrosion-resistant materials, such as rigid polyvinyl chloride (UPVC), to enhance resistance to seawater and extend their service life.

[0022] The monitoring module includes a pressure gauge 21, a turbidity monitor 22, a corrosion rate monitor 23, a pH monitor 24, a conductivity monitor 25, and an electromagnetic flow meter 26, arranged sequentially along the monitoring pipeline 10. These are used to monitor changes in the circulating water pressure, turbidity, corrosion rate, pH value, conductivity, and flow rate in the pipeline, providing centralized monitoring and reducing maintenance workload. Except for the turbidity monitor 22 and the electromagnetic flow meter 26, which are directly connected to the straight section 12, the pressure gauge 21, corrosion rate monitor 23, pH monitor 24, and conductivity monitor 25 are all connected to the straight section 12 via a T-connector 13.

[0023] All the aforementioned monitoring instruments are housed within the enclosure 40 and are all corrosion-resistant models. Specifically, the turbidity monitor 22 includes an automatic colorimetric and bubble compensation module, offering high measurement accuracy and a wide measurement range; the corrosion rate monitor 23 includes a probe and a housing, with the probe made of stainless steel, carbon steel, or copper, selected according to actual needs; the housing is made of polybutylene terephthalate, providing good corrosion resistance; the pH monitor 24 includes a dual-liquid-connected reference electrode and an automatic temperature compensation module; the conductivity monitor 25 includes an automatic temperature compensation module; and the electromagnetic flowmeter 26 has a polytetrafluoroethylene lining with an IP68 protection rating.

[0024] The housing 40 also contains a filter module 30. Please refer to... Figure 2 The filter module 30 includes a housing 31, which comprises a first tee pipe 311, a second tee pipe 312, and a third tee pipe 313 connected in sequence by flanges, and a first cover 314 and a second cover 315 respectively connected by flanges on both sides. The first tee pipe 311 is flanged to the first cover 314, which is rotatably connected to and slides relative to the valve stem 32, with a sealing material between them. The first cover 314 is also provided with a bracket 316, and the valve stem 32 is threadedly connected to the bracket 316. A handwheel 317 is provided at the end of the valve stem 32, and rotating the handwheel 317 controls the valve stem 32 to move linearly back and forth along its central axis. In other embodiments, an electric or pneumatic telescopic device can also be used to drive the valve stem 32 to move. The third tee pipe 313 is flanged to the second cover 315.

[0025] The second three-way pipe 312 is equipped with an inlet pipe 33, and the first three-way pipe 311 and the third three-way pipe 313 are both equipped with outlet pipes 34. The two outlet pipes 34 are located on both sides of the inlet pipe 33. One outlet pipe is connected to the inlet of the monitoring pipe 10, and the other outlet pipe is connected to the outlet of the monitoring pipe 10. Both outlet pipes 34 are equipped with one-way valves to prevent backflow of water.

[0026] The inner wall of the housing 31 is also provided with two valve seats. The inner wall of the first tee pipe 311 facing the second tee pipe 312 is provided with a first valve seat 351, and the inner wall of the third tee pipe 313 facing the second tee pipe 312 is provided with a second valve seat 352. The two valve seats are respectively located between the two outlet pipes 34 and the inlet pipe 33. The valve stem 32 is provided with a first valve core 321, a second valve core 322 and a filter seat 323. The valve seats and valve cores are based on relevant technologies. Specifically, the first valve core 321 is located at the end of the first valve seat 351 opposite to the second valve seat 352, and cooperates with the first valve seat 351 to form a first sealing pair, which can prevent circulating water from flowing from the inlet pipe 33 to the first three-way pipe 311; the second valve core 322 is located at the end of the second valve seat 352 opposite to the first valve seat 351, and cooperates with the second valve seat 352 to form a second sealing pair, which can prevent circulating water from flowing from the inlet pipe 33 to the third three-way pipe 313; the filter seat 323 is located between the two valve seats, and the two sides of the filter seat 323 cooperate with the two valve seats respectively. The filter seat 323 is provided with a filter screen, and when it cooperates with one valve seat, it can filter the circulating water; the cooperation between the filter seat and the valve seat can be referred to as the cooperation between the valve core and the valve seat.

[0027] During normal operation, the valve stem 32 contacts the first valve core 321 and the first valve seat 351 to form a seal, thus sealing the first three-way pipe 311. Simultaneously, the filter seat 323 engages with the second valve seat 352. Figure 2 As shown, circulating water enters through inlet pipe 33, flows through second three-way pipe 312 to third three-way pipe 313 where it is filtered by filter seat 323, and then flows out through outlet pipe 34 into the inlet of monitoring pipe 10. Impurities accumulate on the left side of filter seat 323. When the impurities accumulate to a certain extent, the moving valve stem 32 contacts the second valve core 322 with the second valve seat 352 to form a seal and close the third three-way pipe 313. At the same time, filter seat 323 cooperates with first valve seat 351, and circulating water flows through second three-way pipe 312 to first three-way pipe 311 to backwash the impurities on the left side of filter seat 323. The washed-out impurities flow directly to the outlet of monitoring pipe 10 with the circulating water. After backwashing removes some impurities attached to the filter screen, valve stem 32 resets and resumes normal operation to extend the service life of the filter screen and avoid frequent replacement.

[0028] In this embodiment, both the second three-way pipe 312 and the filter seat 323 are as follows: Figure 2Under the symmetrical structure shown, the two valve seats are symmetrical about the central axis of the second three-way pipe 312, the two valve cores are symmetrical about the central axis of the filter seat 323, and the distance between the two valve cores and the filter seat is the same.

[0029] Preferably, such as Figure 3 As shown, the filter seat 323 includes an inner ring and an outer ring, and a plurality of support rods and the filter screen are arranged between the inner ring and the outer ring.

[0030] Preferably, the inlet pipe 33 is also equipped with a three-way valve, the other two ports of which are respectively connected to a flushing water pipe and a circulating water pipe. The flushing water pipe is connected to high-pressure flushing water. When the backwashing effect using circulating water is not good after a long period of use, high-pressure flushing water with higher pressure can be connected to complete the backwashing.

[0031] Preferably, the housing 31, valve seat, and filter seat are made of rigid polyvinyl chloride to enhance corrosion resistance.

[0032] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-parameter online water quality monitoring device, characterized in that, include: The monitoring pipeline is equipped with shut-off valves at both its inlet and outlet. The monitoring module includes a turbidity monitor, a corrosion rate monitor, a pH monitor, a conductivity monitor, and an electromagnetic flow meter, which are arranged sequentially along the monitoring pipeline. A filter module includes a housing with an inlet pipe and two outlet pipes. The two outlet pipes are respectively located on both sides of the inlet pipe and connected to the inlet and outlet of the monitoring pipe. The inner wall of the housing also has two valve seats, positioned between the two outlet pipes and the inlet pipe. The housing has a valve stem that moves linearly along its central axis. The valve stem has two valve cores and a filter seat, with a filter screen on each filter seat. The filter seat is positioned between the two valve seats, with each side of the filter seat engaging with one of the valve seats. The two valve cores are located on opposite sides of the two valve seats, and each valve seat engages with one of the valve cores. When one valve core engages with one valve seat to form a seal, the filter seat engages with the other valve seat.

2. The multi-parameter online water quality monitoring device according to claim 1, characterized in that, The monitoring module also includes a water pressure gauge installed on the monitoring pipeline.

3. The multi-parameter online water quality monitoring device according to claim 2, characterized in that, The monitoring pipeline includes elbows, straight sections, and tees. Multiple elbows connect multiple straight sections into an S-shape, and the multiple straight sections are respectively connected to the water pressure gauge, corrosion rate monitor, pH monitor, and conductivity monitor via tees.

4. The multi-parameter online water quality monitoring device according to claim 1, characterized in that, Both of the aforementioned water outlet pipes are equipped with one-way valves.

5. The multi-parameter online water quality monitoring device according to claim 1, characterized in that, The housing is also provided with a bracket, the valve stem is threadedly connected to the bracket, and the valve stem is also provided with a handwheel.

6. The multi-parameter online water quality monitoring device according to claim 1, characterized in that, The housing includes a first tee pipe, a second tee pipe, and a third tee pipe connected in sequence. The first tee pipe is connected to a first cap, which is rotatably connected to and slides relative to the valve stem. The third tee pipe is connected to a second cap. The valve seat is provided on the side of the first tee pipe and the third tee pipe facing the second tee pipe.

7. The multi-parameter online water quality monitoring device according to claim 6, characterized in that, The two valve seats are symmetrical about the central axis of the second three-way pipe, the two valve cores are symmetrical about the central axis of the filter seat, and the distance between the two valve cores and the filter seat is the same.

8. The multi-parameter online water quality monitoring device according to claim 1, characterized in that, The filter base includes an inner ring and an outer ring, and multiple support rods and the filter screen are arranged between the inner ring and the outer ring.

9. The multi-parameter online water quality monitoring device according to claim 1, characterized in that, The water inlet pipe is also equipped with a three-way valve, and one port of the three-way valve is connected to a flushing water pipe.

10. A multi-parameter online water quality monitoring device according to claim 1, characterized in that, The monitoring pipe, shut-off valve, housing, valve seat, and filter seat are made of rigid polyvinyl chloride.

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