Pipeline type water quality in-situ monitoring device based on fluid dynamic pressure

Abstract

The invention discloses a fluid dynamic pressure-based pipeline type water quality in-situ monitoring device, which comprises: a joint, one end of which is fixed with a water pipe, and the joint is internally provided with a sampling water inlet pipe and a sampling water outlet pipe; the pressure compensation container is fixed with the other end of the connector and is divided into a low-pressure cavity and a high-pressure cavity by a partition plate, the low-pressure cavity is communicated with the water pipe through a sampling water inlet pipe, and the high-pressure cavity is communicated with the water pipe through a sampling water outlet pipe; the steady flow pool is provided with a plurality of monitoring sensors, the steady flow pool is respectively communicated with one ends of a plurality of pairs of steady flow water inlet pipes and steady flow water outlet pipes, the other ends of the steady flow water inlet pipes are respectively communicated with the low-pressure cavity, and the other ends of the steady flow water outlet pipes are respectively communicated with the high-pressure cavity; the pressurizing device is fixed with the pressure compensation container, and the pressurizing device can pressurize the water flow input by the steady water outlet pipe and can output the water flow through the sampling water outlet pipe. The device has the beneficial effects of being simple in structure, low in cost, convenient to use and high in working efficiency.

Description

Technical Field

[0001] The present invention relates to a pipeline type in-situ water quality monitoring device. Background Art

[0002] Most water quality analysis instruments on the current market adopt a drainage type measurement technology, which has several obvious defects. Specifically, this method directly discharges the sampled water during the measurement process, resulting in a daily water resource waste of up to one ton, thus exacerbating the consumption of water resources. In addition, the insertion type probe is susceptible to the influence of flow velocity fluctuations during use, which may affect the stability of the detection results. If the drainage pipeline is designed too long, it will also cause a lag in the detection data, thereby affecting the real-time and accuracy of the data. Summary of the Invention

[0003] In view of the above deficiencies, the present invention provides a pipeline type in-situ water quality monitoring device based on fluid dynamic pressure.

[0004] The technical solution of the present invention is as follows:

[0005] A pipeline type in-situ water quality monitoring device based on fluid dynamic pressure, comprising:

[0006] A joint, one end of which is fixed to a water pipe, and a sampling water inlet pipe and a sampling water outlet pipe are arranged inside the joint;

[0007] A pressure compensation container, which is fixed to the other end of the joint. The pressure compensation container is divided into a low-pressure chamber and a high-pressure chamber by a partition. The low-pressure chamber is communicated with the water pipe through the sampling water inlet pipe, and the high-pressure chamber is communicated with the water pipe through the sampling water outlet pipe;

[0008] A steady flow pool, which is installed with a plurality of monitoring sensors. The steady flow pool is respectively communicated with one ends of a plurality of pairs of steady flow inlet pipes and steady flow outlet pipes. The other ends of the plurality of steady flow inlet pipes are respectively communicated with the low-pressure chamber, and the other ends of the plurality of steady flow outlet pipes are respectively communicated with the high-pressure chamber;

[0009] A pressurizing device, which is fixed to the pressure compensation container, and the pressurizing device can output to the steady flow outlet pipe;

[0010] Part of the water in the water pipe can flow back to the water pipe through the sampling water inlet pipe, the low-pressure chamber of the pressure compensation container, the steady flow inlet pipe, the steady flow pool, the steady flow outlet pipe, the high-pressure chamber of the pressure compensation container, and the sampling water outlet pipe.

[0011] The pressurizing device includes:

[0012] A pressurizing motor, the housing of which is fixed to the pressure compensation container. The rotating shaft of the pressurizing motor extends into the high-pressure chamber, and the rotating shaft is connected with a pressurizing blade. The other ends of the plurality of steady flow outlet pipes are located in the negative pressure area of the pressurizing blade.

[0013] The pressure compensation container is cylindrical, and the steady flow pool is annular. The steady flow pool is sleeved outside the pressure compensation container.

[0014] The pressure compensation container is integrally connected with the joint, and the joint is detachably and sealingly connected with the water pipe.

[0015] The steady flow pool is provided with a suspended rotary scraping ring. The inner side of the rotary scraping ring is provided with rotary blades, and the outer side of the rotary scraping ring is provided with cleaning brushes. The rotary blades rotate under the action of the water flow in the steady flow inlet pipe, and the cleaning brushes can clean the monitoring sensors.

[0016] When the pressurizing motor accelerates, the monitoring sensor does not collect signals. When the monitoring sensor collects signals, the pressurizing motor decelerates.

[0017] The sampling inlet pipe and the sampling outlet pipe are two pipe orifices located inside the water pipe and are separated by a certain distance.

[0018] Multiple pairs of steady flow inlet pipes and steady flow outlet pipes are evenly distributed.

[0019] Each pair of steady flow inlet pipes and steady flow outlet pipes are fixed in a staggered manner.

[0020] The steady flow inlet pipes and the steady flow outlet pipes are conical pipes. The inlet of the steady flow inlet pipe is thin and the outlet is thick; the inlet of the steady flow outlet pipe is thick and the outlet is thin.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. On the one hand, it will not cause waste of additional water volume; for some installation points where drainage is troublesome, such as the secondary water supply plant located in the basement, there is no need to design additional drainage pipelines.

[0023] 2. The detection medium update cycle < 10 seconds, and the efficiency is increased by 80% compared with the traditional method.

[0024] 3. The scraping structure reduces the probe contamination rate to < 2% per month.

[0025] 4. The overall pressure loss < 3 kPa, which is applicable to pipelines with DN50 - DN600.

[0026] 5. The present monitoring device has only one connection port with the water pipe, which greatly facilitates installation and maintenance, and significantly shortens the water cut-off time.

[0027] The present invention has the beneficial effects of low cost, convenient installation, water conservation and energy saving, and extending the service life of the instrument. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is Figure 1 the top view of Detailed implementation mode

[0030] The present invention will be further described in conjunction with the accompanying drawings:

[0031] As Figure 1 and Figure 2 shown, a pipeline-type in-situ water quality monitoring device based on hydrodynamic pressure includes:

[0032] A joint 2, one end of which is fixed to a water pipe 1, and a sampling water inlet pipe 21 and a sampling water outlet pipe 22 are arranged inside the joint 2;

[0033] A pressure compensation container 3, which is fixed to the other end of the joint 2. The pressure compensation container 3 is divided into a low-pressure chamber 301 and a high-pressure chamber 302 by a partition 31. The low-pressure chamber 301 is communicated with the water pipe 1 through the sampling water inlet pipe 21, and the high-pressure chamber 302 is communicated with the water pipe 1 through the sampling water outlet pipe 22;

[0034] A steady flow pool 4, which is equipped with a plurality of monitoring sensors 5. The steady flow pool 4 is respectively communicated with one ends of a plurality of pairs of steady flow inlet pipes 42 and steady flow outlet pipes 43. The other ends of the plurality of steady flow inlet pipes 42 are respectively communicated with the low-pressure chamber 301, and the other ends of the plurality of steady flow outlet pipes 43 are respectively communicated with the high-pressure chamber 302;

[0035] A pressurizing device, which is fixed to the pressure compensation container 3. The pressurizing device can pressurize the water flow input by the steady flow outlet pipe 43 and output it through the sampling water outlet pipe 22;

[0036] Part of the water in the water pipe 1 can flow back to the water pipe 1 through the sampling water inlet pipe 21, the low-pressure chamber 301 of the pressure compensation container 3, the steady flow inlet pipe 42, the steady flow pool 4, the steady flow outlet pipe 43, the high-pressure chamber 302 of the pressure compensation container 3, and the sampling water outlet pipe 22.

[0037] The present invention has only one connection port with the water pipe 1. A threaded hole can be directly drilled on the water pipe 1, and the external thread of the joint 2 is screwed into the threaded hole through a sealing ring for fixation. The construction is very convenient, the modification is very small, the construction time can be greatly shortened, and the water cut-off time can be reduced.

[0038] Connecting the pressure compensation container 3 and the steady flow pool 4 through the steady flow inlet pipe 42 and the steady flow outlet pipe 43 can make the water flow more stable and reduce the detection error of the sensor.

[0039] There is no waste of additional detected water.

[0040] There is a certain distance between the plurality of monitoring sensors 5, and they do not interfere with each other. The specific models can be selected according to needs. Commonly used ones such as turbidity meter sensors, etc. This structure has strong versatility, and the unused positions can be blocked with plugs.

[0041] Preferably, the pressurizing device includes:

[0042] A pressurizing motor 33, whose housing is fixed to the pressure compensation container 3. The rotating shaft of the pressurizing motor 33 extends into the high-pressure chamber 302, and the rotating shaft is connected to the pressurizing blade 32. The other ends of multiple steady-flow outlet pipes 43 are located in the negative pressure area of the pressurizing blade 32. The pressurizing motor 33 can be a reduction motor, with increased power and reduced speed.

[0043] It should be noted that in this embodiment Figure 1 the direction of water flow is given. The negative pressure area is above the pressurizing blade 32, and the positive pressure area is below the pressurizing blade 32.

[0044] Preferably, the pressure compensation container 3 is cylindrical, the steady-flow pool 4 is annular, and the steady-flow pool 4 is sleeved outside the pressure compensation container 3.

[0045] For the convenience of installation, preferably, the pressure compensation container 3 and the joint 2 are integrated, and the joint 2 is detachably and sealingly connected to the water pipe 1.

[0046] In order to clean the sensing head of the sensor, the steady-flow pool 4 is provided with a suspended rotary scraping ring 41. The inner side of the rotary scraping ring 41 is provided with rotary blades, and the outer side of the rotary scraping ring 41 is provided with cleaning brushes. The rotary blades rotate under the action of the water flow in the steady-flow inlet pipe 42, and the cleaning brushes can clean the monitoring sensor 5. This structure does not require additional power and has the effect of energy saving.

[0047] In order to further improve the monitoring accuracy, when the pressurizing motor 33 accelerates, the monitoring sensor 5 does not collect signals. When the monitoring sensor 5 collects signals, the pressurizing motor 33 decelerates or even stops rotating. This solution does not affect the real-time collection of water flow.

[0048] In order to reduce water flow backflow, the two pipe orifices of the sampling inlet pipe 21 and the sampling outlet pipe 22 located in the water pipe 1 are separated by a certain distance, and the water flow after monitoring does not flow back for secondary detection.

[0049] Preferably, multiple pairs of steady-flow inlet pipes 42 and steady-flow outlet pipes 43 are evenly distributed.

[0050] Each pair of steady-flow inlet pipes 42 and steady-flow outlet pipes 43 are fixed in a staggered manner. It should be noted that dead corners are likely to occur when the water in the steady-flow pool 4 flows. In order to reduce such dead corners, they are fixed in a staggered manner. For example, if four steady-flow outlet pipes 43 are arranged at the positions of the X-axis and the Y-axis, then the other four steady-flow inlet pipes 42 can be arranged at positions with a 45-degree angle difference. The steady-flow pool 4 can both stabilize the flow and is not likely to generate dead corners, ensuring the real-time collection of water flow.

[0051] Preferably, the steady-flow inlet pipe 42 and the steady-flow outlet pipe 43 are tapered pipes. The inlet of the steady-flow inlet pipe 42 is thin and the outlet is thick; the inlet of the steady-flow outlet pipe 43 is thick and the outlet is thin. This structure can make the water flow more stable when passing through the steady-flow pool 4, reduce resistance, reduce the vortex effect, thereby reducing the interference to the monitoring sensor 5 and improving the detection accuracy.

[0052] The detection medium update cycle of the present invention is < 10 seconds, and the efficiency is increased by 80% compared with the traditional method.

[0053] The scraping structure reduces the probe contamination rate to < 2% per month.

[0054] The overall pressure loss is < 3 kPa, suitable for DN50 - DN600 pipes.

Claims

1. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure, characterized in that it includes: A connector (2), one end of which is fixed to the water pipe (1), and a sampling water inlet pipe (21) and a sampling water outlet pipe (22) are arranged in the connector (2); A pressure compensation container (3) is fixed to the other end of the joint (2); the pressure compensation container (3) is divided into a low-pressure chamber (301) and a high-pressure chamber (302) by a partition (31); the low-pressure chamber (301) is connected to the water pipe (1) via a sampling water inlet pipe (21); and the high-pressure chamber (302) is connected to the water pipe (1) via a sampling water outlet pipe (22); A stabilizing pool (4) is provided with a plurality of monitoring sensors (5), the stabilizing pool (4) is respectively connected to one end of a plurality of pairs of stabilizing water inlet pipes (42) and a stabilizing water outlet pipe (43), the other ends of the plurality of stabilizing water inlet pipes (42) are respectively connected to the low-pressure chamber (301), and the other ends of the plurality of stabilizing water outlet pipes (43) are respectively connected to the high-pressure chamber (302); A pressurizing device, which is fixed to the pressure compensation container (3), and can pressurize the water flow input by the steady-flow outlet pipe (43) and output it through the sampling outlet pipe (22); Part of the water in the water pipe (1) can flow back to the water pipe (1) via the sampling water inlet pipe (21), the low-pressure chamber (301) of the pressure compensation container (3), the steady-flow water inlet pipe (42), the steady-flow pool (4), the steady-flow water outlet pipe (43), the high-pressure chamber (302) of the pressure compensation container (3), and the sampling water outlet pipe (22).

2. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure as claimed in claim 1, characterized in that: The pressurizing device includes: The pressurizing motor (33) has a housing fixed to the pressure compensation container (3). The rotating shaft of the pressurizing motor (33) extends into the high-pressure chamber (302). The rotating shaft is connected to the pressurizing blade (32). The other ends of the plurality of steady-flow outlet pipes (43) are located in the negative pressure area of ​​the pressurizing blade (32).

3. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure as claimed in claim 2, characterized in that: The pressure compensation container (3) is cylindrical, the flow stabilization pool (4) is annular, and the flow stabilization pool (4) is sleeved outside the pressure compensation container (3).

4. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure as claimed in claim 2, characterized in that: The pressure compensation container (3) is connected to the joint (2) as a whole, and the joint (2) is detachably sealed and connected to the water pipe (1).

5. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure as claimed in any one of claims 1 to 4, characterized in that: The stabilizing pool (4) is provided with a suspended rotating scraping ring (41), the inner side of the rotating scraping ring (41) is provided with rotating blades, and the outer side of the rotating scraping ring (41) is provided with a cleaning brush. The rotating blades rotate under the action of the water flow of the stabilizing water inlet pipe (42), and the cleaning brush can clean the monitoring sensor (5).

6. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure according to any one of claims 1 to 4, characterized in that: When the pressurizing motor (33) accelerates, the monitoring sensor (5) does not collect signals; when the monitoring sensor (5) collects signals, the pressurizing motor (33) decelerates.

7. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure according to any one of claims 1 to 4, characterized in that: The sampling water inlet pipe (21) and the sampling water outlet pipe (22) are located at two pipe openings in the water pipe (1) and are separated by a certain distance.

8. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure according to any one of claims 1 to 4, characterized in that: A plurality of pairs of steady-flow water inlet pipes (42) and steady-flow water outlet pipes (43) are evenly distributed.

9. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure according to any one of claims 1 to 4, characterized in that: Each pair of steady-flow water inlet pipes (42) and steady-flow water outlet pipes (43) are staggered and fixed.

10. A pipeline water quality in-situ monitoring device based on fluid dynamic pressure according to any one of claims 1 to 4, characterized in that: The steady-flow water inlet pipe (42) and the steady-flow water outlet pipe (43) are tapered pipes. The steady-flow water inlet pipe (42) has a thin inlet and a thick outlet; the steady-flow water outlet pipe (43) has a thick inlet and a thin outlet.

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