A water-air separation device

Abstract

This application provides a water-gas separation device, which includes a main water pipe, a connecting water pipe, a turbidity analyzer, a shut-off valve, and an exhaust valve. One end of the main water pipe is connected to a water sampling point, and the other end is connected to the exhaust valve, which is used to discharge gas from the main water pipe and the connecting water pipe. The connecting water pipe has a downward-curving U-shaped bend, with one end connected to the main water pipe and the other end connected to the turbidity analyzer. The shut-off valve is installed on the main water pipe. Through the combined design of special piping and an automatic exhaust valve, this device can effectively remove air bubbles from the water, significantly improving the accuracy of the turbidity meter when measuring clean water samples.

Description

Technical Field

[0001] This utility model relates to the fields of water environment and water supply and drainage technology, and in particular to a water-air separation device. Background Technology

[0002] In recent years, with the increasing requirements for water quality, the measurement of water turbidity has been used more and more. Especially with the improvement of processes such as advanced treatment, the turbidity of water leaving water supply plants and water in the distribution network is getting lower and lower. Therefore, there are more and more application points for turbidity measurement.

[0003] When measuring turbidity, the water pressure of the treated water and the water in the pipe network is relatively high, generally between 0.3-0.6 MPa. However, the turbidity analyzer requires lower pressure and flow rate, generally less than 0.05 MPa, with a flow rate between 200-500 ml / min. This necessitates the use of a pressure-reducing and flow-adjusting device between the sampling point and the turbidity analyzer to convert the high-pressure water into low-pressure water with a constant flow rate to meet the sample introduction requirements of the turbidity analyzer.

[0004] However, in practical applications, there are various sampling methods for sampling tubes, and there are often irregularities in installation and construction. This can lead to the gas in the pipeline being carried into the sampling pipeline during the sampling process, and then into the turbidity analyzer, which has a huge impact on the test results of the turbidity analyzer.

[0005] Especially in summer, the water pressure changes from high pressure to low pressure. After being taken out of the low-temperature pipe network, the water temperature rises in the sampling pipeline, which causes the solubility of gases in the water to decrease. Dissolved gases are released and form small bubbles that are visible or invisible to the naked eye. When these small bubbles enter the turbidity analyzer, they will also scatter light in the 90° direction, just like water particles, thus causing the turbidity test results to deviate from the actual values.

[0006] As the turbidity values ​​of water leaving water treatment plants and water in the distribution network decrease, the interference of air bubbles on water turbidity becomes increasingly prominent. Currently, there is no effective air bubble removal device, which is also a common test distortion problem in the application of turbidity analyzers. Utility Model Content

[0007] This application provides an air-water separation device that can automatically and accurately obtain the true turbidity of water, avoiding interference from air bubbles in the measurement of water turbidity.

[0008] This application provides a gas-liquid separation device, which includes a main water pipe, a connecting water pipe, a turbidity analyzer, a shut-off valve, and an exhaust valve. One end of the main water pipe is connected to a water sampling point, and the other end is connected to the exhaust valve, which is used to discharge gas from the main water pipe and the connecting water pipe. The connecting water pipe has a downward U-shaped bend, and one end is connected to the main water pipe, while the other end is connected to the turbidity analyzer. The shut-off valve is installed on the main water pipe.

[0009] In one embodiment, the drain valve includes a valve cavity, a float, a pin, and an exhaust valve; the float is located at the lower part of the valve cavity, and the pin is located inside the valve cavity.

[0010] In one embodiment, the float and the pin are connected to each other.

[0011] In one embodiment, when no gas accumulates in the valve cavity, the float is in the pressure equilibrium position and the exhaust valve is in the closed state.

[0012] In one embodiment, when gas accumulates in the air valve cavity, the float descends and drives the pin to open the exhaust valve, allowing the gas to escape.

[0013] In one embodiment, when gas is discharged from the air valve cavity, the float rises and drives the pin to close the exhaust valve.

[0014] In one embodiment, the connecting water pipe is a DN15 water pipe.

[0015] In one embodiment, the shut-off valve is located between the water sampling point and the water pipe connection point, which is the connection point between the main water pipe and the connecting water pipe.

[0016] In one embodiment, the shut-off valve includes a valve disc and a valve seat, the valve disc moving along the centerline of the valve seat, and the change in the valve seat opening being directly proportional to the valve disc travel.

[0017] In one embodiment, the turbidity analyzer operates on the principle of 90° scattered light.

[0018] The solution provided in the above embodiments of this application, through the combined design of special pipelines and automatic air vents, can effectively remove air bubbles in water and significantly improve the accuracy of turbidimeters when measuring clean water samples. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly described below.

[0020] Figure 1 This is a schematic diagram of a water-air separation device provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of an exhaust valve provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of another exhaust valve provided in an embodiment of this application. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0024] Similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Figure 1 This is a schematic diagram of a water vapor device provided in an embodiment of this application. Figure 1 The water vapor control system includes a main water pipe 101, a connecting water pipe 102, a turbidity analyzer 103, a shut-off valve 104, and an exhaust valve 105. One end of the main water pipe 101 is connected to a water sampling point 106, and the other end is connected to the exhaust valve 105, which is used to discharge gas from the main water pipe 101 and the connecting water pipe 102. The connecting water pipe 102 has a downward-curving U-shaped bend, with one end connected to the main water pipe 101 and the other end connected to the turbidity analyzer 103. The shut-off valve 104 is installed on the main water pipe 101.

[0026] Figure 2 This is a schematic diagram of an exhaust valve provided in an embodiment of this application. Figure 3 This is a schematic diagram of another exhaust valve provided in an embodiment of this application. Figure 2 and Figure 3 In the process, the drain valve 105 includes a valve cavity 201, a float 202, a pin 203, and an exhaust valve 204. The float 202 is located at the lower part of the valve cavity 201, and the pin 203 is located inside the valve cavity 201. The float 202 and the pin 203 are connected to each other.

[0027] exist Figure 2 In the process, when no gas accumulates in the air valve cavity 201, the float 202 is in the pressure equilibrium position, and the exhaust valve 204 is in the closed state. Figure 3 When gas accumulates in the air valve cavity 201, the float 202 descends and drives the pin 203 to open the exhaust valve 204, allowing the gas to escape. When the gas in the air valve cavity 201 is exhausted, the float 202 rises and drives the pin 203 to close the exhaust valve 204.

[0028] Water pipe 102 is a DN15 water pipe. Stop valve 104 is located between water sampling point 106 and water pipe connection point 107. Water pipe connection point 107 is the connection point between main water pipe 101 and connecting water pipe 102. Stop valve 104 includes a valve disc and a valve seat. The valve disc moves along the centerline of the valve seat, and the change in the valve seat opening is directly proportional to the valve disc stroke. Turbidity analyzer 103 operates on the principle of 90° scattered light.

[0029] Specifically, the functions of the connecting water pipe 102, turbidity analyzer 103, shut-off valve 104, and vent valve 105 are as follows:

[0030] Connecting water pipe 102: The nominal diameter of the water pipe is represented by DN. To facilitate the control of water flow and the removal of air bubbles, a DN15 water pipe (1 / 2 inch, outer diameter of 21.3 mm) is used to connect the main water pipe and the turbidity analyzer with a U-shaped bend, so that the air bubbles can float fully in the pipeline and enter the air vent valve for discharge.

[0031] Turbidity Analyzer 103: The working principle of the turbidity analyzer is based on the principle of 90° scattered light. When light is emitted from the light source and passes through the water sample, it will be scattered when it encounters suspended particles in the water. A photoelectric detector detects the intensity of the scattered light at a 90° angle to the incident light. The intensity of the scattered light is proportional to the number of suspended particles in the water sample; therefore, the turbidity of the water sample can be calculated by measuring the intensity of the scattered light.

[0032] Gate valve 104: The function of the gate valve in the pipeline is to cut off and regulate the sampling water flow. The opening and closing part of the gate valve, also called the valve disc, moves along the center line of the valve seat. The change of the valve seat opening is directly proportional to the valve disc stroke.

[0033] Air vent valve 105: The working principle of the air vent valve is mainly to regulate the flow of gas in the system by controlling the opening and closing state of the air vent pipe, thereby ensuring the safe operation of the system. Specifically, when there is gas in the water, the gas will be released into the air vent valve cavity, increasing the internal pressure of the system, causing the float to descend, and the pin to open the valve, releasing the internal gas and restoring the system pressure to equilibrium. When all the gas in the water has been released, the system pressure drops, the float will rise, and the mechanical structure will ensure that the pin closes the valve.

[0034] In this embodiment, the sampling water path is: water sampling point, stop valve, main water pipe, air vent valve, and finally to the turbidity analyzer. When air bubbles are mixed into the sampling tube or precipitated due to pressure reduction and temperature increase, because water, particulate matter, and air bubbles have different specific gravities, the water flow rate in the DN15 water pipe is relatively slow at 200-500 ml / min. When flowing through the downward-curving U-shaped bend, water and particulate matter are driven downward into the analyzer by the water force. Air bubbles, due to their lighter specific gravity, will only flow upward in the slow-moving water and will not flow downward with the water flow. When the air bubbles rise to the top, they accumulate in the air vent valve, which automatically discharges the air bubbles. Because water and particulate matter have a higher specific gravity, the particulate matter will enter the turbidity analyzer with the water flow. Therefore, the water-air separation device in this embodiment only ejects air bubbles without affecting the quantity and distribution of particulate matter in the water, thereby achieving the purpose of removing air bubble contamination and restoring the true turbidity.

[0035] The solution provided in the above embodiments of this application, through the combined design of special pipelines and automatic air vents, can effectively remove air bubbles in water and significantly improve the accuracy of turbidimeters when measuring clean water samples.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A water-air separation device, characterized in that, The device includes a main water pipe, a connecting water pipe, a turbidity analyzer, a shut-off valve, and an exhaust valve. One end of the main water pipe is connected to the water sampling point, and the other end is connected to the exhaust valve. The exhaust valve is used to discharge the gas in the main water pipe and the connecting water pipe. The connecting water pipe is in the form of a downward U-shaped bend, with one end connected to the main water pipe and the other end connected to the turbidity analyzer; The shut-off valve is installed on the main water pipe.

2. The water gas separation device of claim 1, wherein, The drain valve includes a valve cavity, a float, a pin, and an exhaust valve. The float is located at the lower part of the valve cavity, and the pin is located inside the valve cavity.

3. The water-gas separation device according to claim 1, characterized in that, The float and the pin are connected to each other.

4. The water-gas separation device according to claim 3, characterized in that, When there is no gas accumulation in the air valve cavity, the float is in the pressure equilibrium position and the exhaust valve is in the closed state.

5. The water-gas separation device according to claim 4, characterized in that, When gas accumulates in the air valve cavity, the float descends and drives the pin to open the exhaust valve, allowing the gas to escape.

6. The water-gas separation device according to claim 5, characterized in that, When the gas in the air valve cavity is discharged, the float rises and drives the pin to close the exhaust valve.

7. The water gas separation device of claim 1, wherein, The connecting water pipe is a DN15 water pipe.

8. The water gas separation device of claim 1, wherein, The shut-off valve is located between the water sampling point and the water pipe connection point, which is the connection point between the main water pipe and the connecting water pipe.

9. The water gas separation device of claim 1, wherein, The shut-off valve includes a valve disc and a valve seat. The valve disc moves along the centerline of the valve seat, and the change in the valve seat opening is directly proportional to the valve disc stroke.

10. The water gas separation device of claim 1, wherein, The turbidity analyzer operates on the principle of 90° scattered light.

Images