A bypass pipe for pH sensor installation and measurement

Abstract

The utility model provides a bypass pipe for pH sensor installation and measurement, which includes a production pipeline and a bypass pipeline connected in parallel therewith. A pH sensor is arranged in the bypass pipeline. The bypass pipeline is in a "C" shape. The first end of the bypass pipeline is connected to the production pipeline through an inlet ball valve, and the second end of the bypass pipeline is connected to the production pipeline through an outlet ball valve. The flow direction of the medium in the production pipeline is consistent with the direction from the first end to the second end. The bypass pipeline is connected with a downwardly arranged discharge pipeline near the first end, and a discharge ball valve is arranged on the discharge pipeline. The utility model measures the pH in the parallel bypass pipeline. The fluid flow rate in the bypass pipeline can be adjusted through the ball valve, ensuring a stable measurement environment in the bypass pipeline, more accurate measurement, and avoiding damage to the pH sensor caused by high-speed scouring of the medium.

Description

Technical Field

[0001] The utility model relates to the technical field of pH measurement, in particular to a bypass pipe for installing and measuring a pH sensor. Background Art

[0002] In the process of producing sodium lauryl polyoxyethylene ether sulfate, the pH value of the material is crucial. Sodium lauryl polyoxyethylene ether sulfate must maintain a high pH value (8 - 11) during the production process to ensure the product quality. Therefore, the accuracy and stability of the pH value are important means to guide the production personnel to produce qualified products.

[0003] Currently, the pH sensor is directly installed in the production pipeline. On the one hand, since the pH sensor needs to be installed on the pipeline at the outlet of the semi-finished product transfer pump, and the pressure on the pipeline is 0.3 MPa, when the transfer pump is not started during the driving process, the pressure is -0.95 KPa. Such a complex working environment will damage the pH sensor. On the other hand, the flow rate of the medium in the production pipeline is fast, and the erosion of the sensor is serious, which will affect the service life of the probe. In addition, since sodium lauryl polyoxyethylene ether sulfate is a paste-like liquid, there will be product accumulation at the sensor probe, resulting in inaccurate measurement, and sometimes even data fluctuations and inability to measure, causing unnecessary losses to production. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a bypass pipe for installing and measuring a pH sensor, which is used to solve the problems in the prior art that the pH sensor is directly installed in the production pipeline, resulting in inaccurate pH measurement and damage to the pH sensor.

[0005] To achieve the above object and other related objects, the present utility model provides a bypass pipe for installing and measuring a pH sensor, which includes a production pipeline and a bypass pipeline connected in parallel therewith. A pH sensor is arranged in the bypass pipeline. The bypass pipeline is in a "C" shape. The first end of the bypass pipeline is connected to the production pipeline through an inlet ball valve, and the second end of the bypass pipeline is connected to the production pipeline through an outlet ball valve. The flow direction of the medium in the production pipeline is the same as the direction from the first end to the second end. A downwardly arranged discharge pipeline is connected to the bypass pipeline near the first end, and a discharge ball valve is arranged on the discharge pipeline.

[0006] In an embodiment of the present utility model, the bypass pipeline includes a lower horizontal section, a vertical section, and an upper horizontal section. The vertical section of the bypass pipeline is connected to the lower horizontal section and / or the upper horizontal section by a bend pipe.

[0007] In an embodiment of the present utility model, the pH sensor is detachably connected to the bypass pipeline.

[0008] In one embodiment of the utility model, an opening is provided at the top of the vertical section of the bypass pipe, an internal thread connector is installed on the opening, the measuring end of the pH sensor is inserted into the vertical section of the bypass pipe, and the pH sensor is threadedly matched with the internal thread connector.

[0009] In an embodiment of the present invention, a sealing member is provided in the internal thread connector, and the sealing member is made of PTFE.

[0010] In one embodiment of the present invention, both ends of the inlet ball valve / outlet ball valve are connected to the production pipeline and the bypass pipeline respectively through flanges.

[0011] In one embodiment of the present invention, the bypass pipe, the inlet ball valve, the outlet ball valve, the discharge pipe, the discharge ball valve and the flange are all made of materials with a pressure rating of PN16 or above.

[0012] As described above, the bypass pipe for pH sensor installation and measurement of the utility model has the following beneficial effects:

[0013] 1. The utility model measures pH in a bypass pipe connected in parallel. The fluid flow in the bypass pipe can be adjusted by a ball valve to ensure a stable measurement environment in the bypass pipe, more accurate measurement, and avoid damage to the pH sensor caused by high-speed scouring of the medium.

[0014] 2. The utility model makes the pH sensor detachable, thereby enabling online installation and removal of the pH sensor, and facilitating maintenance and calibration of the pH sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic structural diagram of a bypass pipe for pH sensor installation and measurement disclosed in an embodiment of the utility model.

[0016] Figure 2 Shown is a schematic cross-sectional view of an internal thread connector disclosed in an embodiment of the present utility model.

[0017] Component number description

[0018] 1. Production pipeline; 2. Bypass pipeline; 3. pH sensor; 4. Internal thread connector; 5. Outlet ball valve; 6. Inlet ball valve; 7. Discharge pipeline; 8. Discharge ball valve; 9. Flange; 10. Cable. DETAILED DESCRIPTION

[0019] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0020] Please refer to Figure 1 , the present utility model provides a bypass pipe for pH sensor installation and measurement, which includes a production pipeline 1 and a bypass pipeline 2 connected in parallel therewith. A pH sensor 3 is arranged in the bypass pipeline 2. The bypass pipeline 2 is in a "C" shape. The first end of the bypass pipeline 2 is connected to the production pipeline 1 through an inlet ball valve 6, and the second end of the bypass pipeline 2 is connected to the production pipeline 1 through an outlet ball valve 5. The flow direction of the medium in the production pipeline 1 is consistent with the direction from the first end to the second end. The bypass pipeline 2 is connected with a downwardly arranged discharge pipeline 7 near the first end, and a discharge ball valve 8 is arranged on the discharge pipeline 7.

[0021] The present utility model measures the pH in the parallel bypass pipeline 2. The fluid flow rate in the bypass pipeline 2 can be adjusted through the ball valve, ensuring a stable measurement environment in the bypass pipeline 2, making the measurement more accurate, and avoiding damage to the pH sensor 3 caused by high-speed scouring of the medium.

[0022] When the device is started and running, after the transfer pump starts and operates normally, place a material collection bucket below the discharge port of the discharge pipeline 7, open the discharge ball valve 8, and then slowly open the inlet ball valve 6. Stop opening the inlet ball valve 6 when there is continuous discharge of materials at the discharge port. At this time, open the outlet ball valve 5 and close the discharge ball valve 8 to make the pH sensor 3 enter the normal operating state. The valve position of the inlet ball valve 6 can be adjusted according to the comparison between the pH value obtained by the chemical analysis laboratory for the material and the pH value measured by the sensor, making the measurement of the sensor more accurate.

[0023] Further, the bypass pipeline 2 includes a lower horizontal section, a vertical section, and an upper horizontal section. The vertical section of the bypass pipeline 2 is connected to the lower horizontal section and / or the upper horizontal section by a bend pipe. Preferably, the lower horizontal section of the bypass pipeline 2 is connected to the vertical section by a bend pipe, which can ensure that the bypass pipeline 2 can discharge materials more cleanly and thoroughly when discharging materials.

[0024] In an embodiment of the present utility model, the pH sensor 3 is detachably connected to the bypass pipeline 2.

[0025] By setting the pH sensor 3 to be detachable, the present utility model can realize the online installation and removal of the pH sensor 3, facilitating the maintenance and calibration of the pH sensor 3.

[0026] Specifically, an opening is provided at the top of the vertical section of the bypass pipe 2, an internal thread connector 4 is installed on the opening, the measuring end of the pH sensor 3 is inserted into the vertical section of the bypass pipe 2, and the pH sensor 3 is threadedly matched with the internal thread connector 4. The other end of the sensor is connected to the transmitter through a cable 10. All other connection methods that can make the pH sensor 3 and the bypass pipe 2 detachable are within the protection scope of the present utility model.

[0027] Furthermore, a sealing member is provided in the internal thread connector 4, and the sealing member is made of PTFE material. By providing the sealing member and limiting the material of the sealing member, leakage of the bypass pipe 2 at the sensor connection can be prevented.

[0028] In this embodiment, when the pH value deviation is large or the measurement fluctuates during the normal operation of the device, the inlet ball valve 6 and the outlet ball valve 5 are first closed, and then the discharge ball valve 8 is opened to relieve the pressure of the bypass pipe 2 and discharge the material, and then the pH sensor 3 is removed for inspection and the sensor is calibrated and calibrated with a standard solution to ensure the stability and accuracy of the measurement.

[0029] In one embodiment of the utility model, both ends of the inlet ball valve 6 / outlet ball valve 5 are connected to the production pipeline 1 and the bypass pipeline 2 through flanges 9 respectively. Fasteners and gaskets are also provided on the flanges 9 to ensure the tightness and firmness of the connection between the ball valve and the pipeline.

[0030] Furthermore, the bypass pipe 2, the inlet ball valve 6, the outlet ball valve 5, the discharge pipe 7, the discharge ball valve 8 and the flange 9 are all made of materials with a pressure grade of PN16 or above.

[0031] The utility model measures pH in a parallel bypass pipe, and the ball valve can adjust the fluid flow in the bypass pipe, thereby ensuring a stable measurement environment in the bypass pipe, making the measurement more accurate, and avoiding damage to the pH sensor caused by high-speed scouring of the medium. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0032] Among them, the terms such as "upper", "lower", "left", "right", "front", "back", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A bypass pipe for pH sensor installation and measurement, characterized in that: It includes a production pipeline and a bypass pipeline connected in parallel therewith. A pH sensor is arranged in the bypass pipeline. The bypass pipeline is in a "C" shape. The first end of the bypass pipeline is connected to the production pipeline through an inlet ball valve. The second end of the bypass pipeline is connected to the production pipeline through an outlet ball valve. The flow direction of the medium in the production pipeline is consistent with the direction from the first end to the second end. A downwardly arranged discharge pipeline is connected to the bypass pipeline near the first end. A discharge ball valve is arranged on the discharge pipeline.

2. A bypass pipe for pH sensor installation and measurement according to claim 1, characterized in that: The bypass pipeline includes a lower horizontal section, a vertical section and an upper horizontal section. The vertical section of the bypass pipeline is connected to the lower horizontal section and / or the upper horizontal section by means of an elbow.

3. A bypass pipe for pH sensor installation and measurement according to claim 1, characterized in that: The pH sensor is detachably connected to the bypass pipeline.

4. A bypass pipe for pH sensor installation and measurement according to claim 3, characterized in that: An opening is provided at the top of the vertical section of the bypass pipeline. An internally threaded connector is installed on the opening. The measuring end of the pH sensor is inserted into the vertical section of the bypass pipeline. The pH sensor is in threaded fit with the internally threaded connector.

5. A bypass pipe for pH sensor installation and measurement according to claim 4, characterized in that: A sealing member is arranged in the internally threaded connector. The sealing member is made of PTFE material.

6. A bypass pipe for pH sensor installation and measurement according to claim 1, characterized in that: Both ends of the inlet ball valve / outlet ball valve are respectively connected to the production pipeline and the bypass pipeline through flanges.

7. A bypass pipe for pH sensor installation and measurement according to claim 1, characterized in that: The bypass pipeline, the inlet ball valve, the outlet ball valve, the discharge pipeline, the discharge ball valve and the flange are all made of materials with a pressure rating of PN16 or above.

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