A valve integrated with water quality monitoring function

Abstract

The utility model relates to valve technical field, concretely refers to a valve integrated with water quality monitoring function, the valve integrated with water quality monitoring function includes: V type ball valve body and valve core, the lower extreme of valve core is fixedly connected with the upper end wall of V type ball valve body through support, both ends of V type ball valve body are provided with import flow channel and export flow channel respectively, and the import flow channel of one side valve wall is installed with water temperature sensor in import flow channel axial side, and the import flow channel and export flow channel side of the other side valve wall are installed with conductivity electrode and PH glass electrode respectively, and the electric signal output end of PH glass electrode and conductivity electrode is connected with the interface electric signal of valve core through shielded signal line respectively, the utility model discloses the integration design of V type ball valve body and valve core, has maintained the pipeline integrity to the greatest extent, has guaranteed that pipeline pressure-bearing capacity is not weakened, has fundamentally reduced the leakage hidden danger, has guaranteed the safe and stable operation of pipeline system.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a valve with integrated water quality monitoring function. Background Technology

[0002] In industrial cooling circulating water and central air conditioning open cooling water systems, split-type water quality monitoring instruments combined with side-filter devices are commonly used to achieve water quality control by monitoring total dissolved solids and pH value online.

[0003] However, due to the "one-time water injection, long-term closed-loop circulation" operating characteristics of central air conditioning closed-loop chilled water systems, there are generally systemic monitoring blind spots. In actual operation, this system faces the risks of microbial growth, metal corrosion, and sediment accumulation, directly leading to a decline in the heat exchange efficiency and a shortened lifespan of the surface coolers in the terminal air conditioning units and the evaporators in the chiller units. The current lagging control mode, which relies on manual periodic sampling and offline testing, cannot trigger chemical cleaning or water replenishment regulation in a timely manner. Existing valves lack real-time monitoring mechanisms for key parameters such as pH value and conductivity when facing the deterioration of closed-loop chilled water quality, and are even less able to trigger early warnings or closed-loop responses for automatic water replenishment / discharge.

[0004] Traditional water quality monitoring requires installing each sensor in a separate hole in the pipeline, which leads to two technical contradictions: damage to pipeline integrity: multiple holes weaken the pipeline's pressure-bearing capacity and increase the risk of leakage; uncontrollable space and cost: multiple instruments occupy more than 3 times the pipe diameter axially, which restricts the design of compact pipelines and doubles the cost of procurement, installation and calibration. Utility Model Content

[0005] In view of the shortcomings of existing technologies, such as the damage to the integrity of pipeline openings and the excessive axial space occupied by multiple instruments, this utility model discloses a valve that integrates water quality monitoring functions.

[0006] A valve integrating water quality monitoring function, characterized in that it includes:

[0007] The valve body and valve core are V-shaped ball valve body and valve core. The lower end of the valve core is fixedly connected to the upper end wall of the V-shaped ball valve body through a bracket. The hemispherical plug body inside the V-shaped ball valve body is connected to the valve core through an extended shaft drive.

[0008] The V-shaped ball valve body is provided with an inlet flow channel and an outlet flow channel at both ends. A water temperature sensor is installed on one side of the valve wall along the axial direction of the inlet flow channel. A conductivity electrode and a pH glass electrode are installed on the inlet flow channel and outlet flow channel sides of the other side of the valve wall, respectively. The electrical signal output terminals of the pH glass electrode and the conductivity electrode are connected to the interface electrical signal of the valve core through shielded signal lines.

[0009] Optionally, the valve core integrates a controller.

[0010] Optionally, two pressure sensors are radially symmetrically arranged in the inlet and outlet flow channels, and the electrical signal output terminals of the pressure sensors are connected to the interface electrical signal of the valve core through shielded signal lines.

[0011] Optionally, the water temperature sensor, pH glass electrode, and conductivity electrode are located within the same V-shaped ball valve body flow channel. Using a water temperature sensor enables temperature compensation for pH and conductivity measurements.

[0012] Optionally, the conductivity electrode and the pH glass electrode are connected to the V-type ball valve body by threads, and the measuring ports of the conductivity electrode and the pH glass electrode are located in the inlet flow channel and the outlet flow channel, respectively.

[0013] Optionally, the pH glass electrode is made of a cylindrical sensitive membrane.

[0014] Optionally, the effective measurement range of the pH glass electrode is between 0 and 14 pH, and it is threadedly connected to the axial V-type ball valve body 1NPT3 / 4 of the inlet flow channel.

[0015] Optionally, the conductivity electrode is made of 316 stainless steel.

[0016] Optionally, the conductivity electrode has an electrode constant K = 1, an effective measurement range of 2.00 to 2000 μS / cm, a resolution of 0.01 μS / cm, an accuracy of ±1% / 0.3℃, and is connected to the outlet flow channel axial V-type ball valve body G3 / 4 external thread.

[0017] This utility model, by adopting the above technical solution, has significant technical effects:

[0018] 1. This utility model, through the integrated design of the V-shaped ball valve body and valve core, eliminates the need for independent drilling and installation of each sensor on the pipeline, greatly maintaining the integrity of the pipeline, ensuring that the pressure-bearing capacity of the pipeline is not weakened, fundamentally reducing the risk of leakage, and ensuring the safe and stable operation of the pipeline system;

[0019] 2. The integration of the valve core with multiple sensors enables the integration of multi-parameter monitoring functions. By triggering the water replenishment and bypass filtration mechanisms in the circulating water system through the valve core, the closed-loop control of "monitoring-decision-execution" is realized, while significantly reducing the axial space occupied by the instruments and keeping it within a reasonable range. This is far lower than the situation where the axial space occupied by traditional multi-instrument systems exceeds three times the pipe diameter, providing strong support for compact pipeline design and expanding the flexibility of pipeline layout.

[0020] 3. The installation design of the pH glass electrode and conductivity electrode in this utility model can still ensure the current flow measurement accuracy while greatly reducing the flow field disturbance intensity of the existing valve body. Moreover, both the sensor and the electrode are designed with threaded interfaces, which facilitates replacement.

[0021] 4. The water temperature sensor provides a unified temperature compensation reference for the pH glass electrode and the conductivity electrode, which can eliminate the temperature difference error of multiple probes. Attached Figure Description

[0022] The following figures illustrate specific embodiments of this application:

[0023] Figure 1 This is a schematic diagram of the overall structure of the valve with integrated water quality monitoring function described in this utility model;

[0024] Figure 2 This is a schematic diagram of the valve with integrated water quality monitoring function described in this utility model, shown in direction A.

[0025] Figure 3 This is a rear view of the valve with integrated water quality monitoring function described in this embodiment of the utility model.

[0026] The attached diagram is labeled as follows: 1. V-shaped ball valve body; 2. Extended shaft; 3. Bracket; 4. Valve core; 5. Pressure sensor; 6. Water temperature sensor; 7. pH glass electrode; 8. Conductivity electrode. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0028] Example 1:

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0030] A valve integrating water quality monitoring function, such as Figure 1 As shown, it includes:

[0031] The V-type ball valve body 1 and valve core 4 are connected. The lower end of the valve core 4 is fixedly connected to the upper end wall of the V-type ball valve body 1 through the bracket 3. The hemispherical plug body inside the V-type ball valve body 1 is connected to the valve core 4 through the extension shaft 2. Rotating the hemispherical plug body is used to realize the control of the medium flow.

[0032] The V-shaped ball valve body 1 has an inlet channel and an outlet channel at both ends. A water temperature sensor 6 is installed on one side of the valve wall along the axial direction of the inlet channel. A conductivity electrode 8 and a pH glass electrode 7 are installed on the inlet and outlet channels of the other side of the valve wall, respectively. The conductivity electrode 8 and the pH glass electrode 7 are connected to the V-shaped ball valve body 1 by threads. The measuring ports of the conductivity electrode 8 and the pH glass electrode 7 are located in the inlet channel and the outlet channel, respectively. The electrical signal output terminals of the pH glass electrode 7 and the conductivity electrode 8 are connected to the valve core interface electrical signal via shielded signal lines.

[0033] In this invention, the pH glass electrode 7 preferably uses a cylindrical sensitive membrane, with an effective measurement range between 0 and 14 pH. It has no built-in temperature compensation and is threadedly connected to the inlet flow channel axial V-type ball valve body 1NPT3 / 4. The conductivity electrode 8 preferably uses 316 stainless steel, with an electrode constant K=1. Its effective measurement range is between 2.00 and 2000 μS / cm, with a resolution of 0.01 μS / cm and an accuracy of ±1% / 0.3℃. It also has no built-in temperature compensation and is threadedly connected to the outlet flow channel axial V-type ball valve body 1G3 / 4.

[0034] The water temperature sensor 6, pH glass electrode 7, and conductivity electrode 8 are located within the same flow channel of the V-shaped ball valve body 1. Therefore, the water temperature sensor 6 enables temperature compensation for pH and conductivity measurements. The valve core 4 integrates a controller and an electric actuator. The controller synchronously reads water temperature (PT1000), pH (mV signal), and conductivity (resistance signal) data, and, combined with built-in pH and conductivity temperature compensation formulas, synchronously corrects the measured pH and conductivity values.

[0035] The pH value temperature compensation formula is:

[0036] PH_corrected=PH_raw+[0.03×(25-T_actual)]

[0037] Wherein, PH_corrected represents the pH value converted to the standard temperature of 25℃ after temperature compensation, T_actual represents the current actual water temperature, PH_raw represents the reading obtained by directly measuring and converting the pH glass electrode at the current actual water temperature, "0.03" represents the pH glass electrode temperature compensation coefficient, and "25" represents the standard temperature for water quality monitoring, i.e. the water temperature measured in real time by the water temperature sensor integrated on the valve.

[0038] The formula for temperature compensation of conductivity is:

[0039] EC_25=EC_raw / [1+0.02×(T_actual-25)]

[0040] Where EC_25 represents the final conductivity value converted to the standard temperature after temperature compensation, T_actual is the current actual water temperature, EC_raw is the reading directly measured by the conductivity electrode at the current actual water temperature, "0.02" is the temperature compensation coefficient of the chilled water / cooling water system, and "25" is the standard temperature for water quality monitoring, that is, the water temperature measured in real time by the water temperature sensor integrated on the valve.

[0041] The controller's operating steps include:

[0042] Select the water system type (chilled water system, cooling water system) where the current valve is installed;

[0043] Set the appropriate water quality thresholds based on the selected water system type.

[0044] The water quality thresholds are controlled to not exceed the required pH range and conductivity standards. As a preferred example, the controller's internal settings for closed-loop chilled water systems are: pH range (25℃): 7.5–9.5; conductivity (25℃): ≤800 μS / cm. For open-loop circulating water systems, the settings are: pH range (25℃): 7.5–9.5; conductivity (25℃): ≤2300 μS / cm. When the temperature-compensated pH or conductivity value exceeds the preset threshold, the controller transmits a signal to the control system via its built-in wired or wireless communication module. The control system then triggers the opening of the water supply valve or the bypass filtration system. Therefore, the valves can achieve real-time diagnosis and early warning of water quality status based on existing flow measurement and hydraulic balance.

[0045] In this example, the installation design of the PH glass electrode 7 and the conductivity electrode 8 ensures the accuracy of the current flow measurement even with a flow field disturbance intensity of <3% within the existing V-type ball valve body 1. Furthermore, both the sensor and the electrode are designed with threaded interfaces, and the replacement time is ≤10 minutes.

[0046] In addition, two pressure sensors 5 are radially symmetrically arranged in the inlet and outlet flow channels. The electrical signal output terminals of the pressure sensors 5 are connected to the interface electrical signal of the valve core through shielded signal lines.

[0047] By simultaneously measuring the inlet and outlet flow channel pressures, valve core 4 can calculate the pressure difference between the valve inlet and outlet in real time. For example, if the inlet flow channel pressure is normal but the outlet flow channel pressure drops abnormally or the pressure difference increases abnormally, it may indicate that the downstream pipeline or filter or other equipment is blocked.

[0048] This invention, through the integrated design of the V-shaped ball valve body and valve core, eliminates the need for independent drilling for each sensor on the pipeline, greatly maintaining pipeline integrity, ensuring that the pipeline's pressure-bearing capacity is not weakened, fundamentally reducing the risk of leakage, and guaranteeing the safe and stable operation of the pipeline system. The integration of the valve core with multiple sensors enables the integration of multi-parameter monitoring functions. By triggering the water replenishment and bypass filtration mechanisms in the circulating water system through the valve core, a closed-loop control of "monitoring-decision-execution" is achieved, while significantly reducing the axial space occupied by the instruments, keeping it within a reasonable range. This is far lower than the situation in traditional multi-instrument systems where the axial space occupied exceeds three times the pipe diameter, providing strong support for compact pipeline design and expanding the flexibility of pipeline layout. The installation design of the pH glass electrode and conductivity electrode greatly reduces the flow field disturbance intensity of the existing valve body while still ensuring the current flow measurement accuracy. Moreover, both the sensors and electrodes have threaded interfaces for easy replacement. The water temperature sensor provides a unified temperature compensation reference for the pH glass electrode and conductivity electrode, which can eliminate the temperature difference error of multiple probes.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they 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 valve integrating water quality monitoring function, characterized in that, include: The valve body and valve core are V-shaped ball valve body and valve core. The lower end of the valve core is fixedly connected to the upper end wall of the V-shaped ball valve body through a bracket. The hemispherical plug body inside the V-shaped ball valve body is connected to the valve core through an extended shaft drive. The V-shaped ball valve body is provided with an inlet flow channel and an outlet flow channel at both ends. A water temperature sensor is installed on one side of the valve wall along the axial direction of the inlet flow channel. A conductivity electrode and a pH glass electrode are installed on the inlet flow channel and outlet flow channel sides of the other side of the valve wall, respectively. The electrical signal output terminals of the pH glass electrode and the conductivity electrode are connected to the interface electrical signal of the valve core through shielded signal lines.

2. The valve with integrated water quality monitoring function as described in claim 1, characterized in that, The valve core integrates a controller.

3. The valve with integrated water quality monitoring function as described in claim 1, characterized in that, Two pressure sensors are radially symmetrically arranged in the inlet and outlet flow channels. The electrical signal output terminals of the pressure sensors are connected to the valve core interface via shielded signal lines.

4. The valve with integrated water quality monitoring function as described in claim 1, characterized in that, The water temperature sensor, pH glass electrode, and conductivity electrode are located in the same V-shaped ball valve body flow channel.

5. The valve with integrated water quality monitoring function as described in claim 1, characterized in that, The conductivity electrode and the pH glass electrode are connected to the V-type ball valve body by threads, and the measuring ports of the conductivity electrode and the pH glass electrode are located in the inlet flow channel and the outlet flow channel, respectively.

6. The valve with integrated water quality monitoring function as described in claim 5, characterized in that, The pH glass electrode is made of a cylindrical sensitive membrane.

7. The valve with integrated water quality monitoring function as described in claim 5, characterized in that, The effective measurement range of the pH glass electrode is between 0 and 14 pH, and it is threadedly connected to the axial V-type ball valve body 1NPT3 / 4 of the inlet flow channel.

8. The valve with integrated water quality monitoring function as described in claim 5, characterized in that, The conductivity electrode is made of 316 stainless steel.

9. The valve with integrated water quality monitoring function as described in claim 5, characterized in that, The conductivity electrode has an electrode constant K = 1, an effective measurement range of 2.00 to 2000 μS / cm, a resolution of 0.01 μS / cm, and an accuracy of ±1% / 0.3℃. It is connected to the outlet flow channel axial V-type ball valve body G3 / 4 external thread.

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