A turbidity meter with no dead angle flow cell

Abstract

This utility model relates to the field of turbidity meter flow cell technology, and more particularly to a dead-angle-free turbidity meter flow cell. It includes: a turbidity cell, a turbidity meter disposed on one side of the turbidity cell, a pneumatic ball valve disposed at one end of the turbidity meter and connected to the turbidity cell, and a pneumatic diaphragm valve assembly disposed at the other end of the turbidity cell. The turbidity cell is designed to be dead-angle-free. A glass sight glass is disposed at one end of the turbidity cell; a pressure sensor is disposed on one side of the glass sight glass; and the turbidity cell is connected to a filter. This utility model provides a dead-angle-free turbidity meter flow cell with advantages such as fast reaction speed, high working efficiency, more accurate detection results, good sealing performance, simple structure, and convenient assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of turbidity meter flow cell technology, and in particular to a turbidity meter flow cell without dead angle. Background Technology

[0002] Currently, turbidimeters used in pharmaceutical and biological applications are mainly of two types: single-fiber (InPro8050 & InPro8100) and dual-fiber (InPro8200). Although the materials and number of fibers differ, the usage is the same.

[0003] Turbidity meters cannot be used on pipelines, but can be used on tanks. The light emitted by the sensor probe needs a detection range of 10cm, with no obstructions and no gas within this range; otherwise, it may lead to failure to monitor or inaccurate data. The fiber optic cable included with the turbidity meter must have its length specified before ordering. This cable contains optical fiber, which cannot be bent, as this can easily cause breakage. If the length is insufficient, an extension cable must be used, but the procurement cycle for extension cables is exceptionally long, and it cannot be extended by splicing. Therefore, optical fiber is extremely precious and fragile, and the longer the fiber, the more loss of accuracy there will be. Hence, research and development were conducted on turbidity meters specifically designed for pipeline installation.

[0004] Under normal circumstances, online turbidity meter sensors are only suitable for detection on tanks. Using them on pipelines is extremely demanding and almost impossible. When the detected liquid is substandard, the entire tank must be emptied, cleaned, sterilized, and then the liquid must be monitored again. The whole process is cumbersome, inefficient, and there are not enough turbidity meters. The fiber optic cables are long and costly.

[0005] Chinese patent CN104807753B discloses a dual-cavity flow cell turbidity measurement system and its control method. This system employs a dual-cavity flow cell with an defoaming chamber and a measuring chamber, which can operate independently. This effectively balances measurement accuracy, timeliness, and system miniaturization requirements. It also exhibits good adaptability to measurement environments with significant variations in foam content and turbidity, providing a novel solution for turbidity measurement systems. Furthermore, the measurement control method of this invention features a simple control process and further improves the system's timeliness while ensuring good measurement accuracy. In addition, the system also features self-cleaning control, cleaning the dual-cavity flow cell to reduce the impact of deposited contaminants on turbidity measurement accuracy, thereby lowering the false detection rate and improving measurement accuracy.

[0006] However, the electronically controlled valve in this technical solution may malfunction after prolonged use, which may cause the water sample to be transferred incorrectly, affecting the measurement results. The level sensor may lose its accuracy due to scale or impurities, resulting in low detection accuracy and inconvenience in use. Furthermore, this solution contains multiple components, has a complex structure, is inconvenient to disassemble and assemble, and has high operating costs. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a flow cell for a turbidity meter without dead angles. By using a pneumatic ball valve in conjunction with a pneumatic diaphragm valve assembly, the medium can flow smoothly, which helps to reduce the accumulation of the medium in the pipeline, thereby reducing the formation of scale, avoiding measurement errors caused by scale buildup, and improving the accuracy and reliability of the measurement.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A turbidity meter flow cell with no dead angle includes: a turbidity cell, a turbidity meter disposed on one side of the turbidity cell, a pneumatic ball valve disposed at one end of the turbidity meter and connected to the turbidity cell, and a pneumatic diaphragm valve assembly disposed at the other end of the turbidity cell, wherein the turbidity cell is designed with no dead angle.

[0010] Preferably, a glass sight glass is provided at one end of the turbidity tank.

[0011] Preferably, a pressure sensor is provided on one side of the glass sight glass.

[0012] Preferably, the turbidity tank is connected to the filter.

[0013] Preferably, one end of the pneumatic ball valve is provided with a connecting pipe.

[0014] Preferably, one end of the connecting pipe is provided with a drainage pipe.

[0015] Preferably, a temperature sensor is provided at the other end of the connecting pipe.

[0016] Preferably, a drain valve is provided between the connecting pipe and the drainage pipe.

[0017] Preferably, a wastewater pipe is provided on one side of the drainage pipe.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) By installing a pneumatic ball valve and a diaphragm valve assembly in the turbidity tank, this utility model can remotely, efficiently, quickly and accurately cut off the flow of the medium inside the pipe in the turbidity tank. It can flexibly control the flow direction and flow rate of the medium, reduce the residence time of the medium in the pipe, improve the timeliness and accuracy of the measurement, and the precise control capability can also avoid medium leakage and ensure the sealing of the system. The turbidity tank is designed without dead angles, which avoids the retention and dead angles of the medium in the pipe, and ensures that the medium can flow smoothly, thereby ensuring the accuracy of the test results.

[0020] (2) This utility model observes the flow direction and flow of liquid by installing a glass sight glass in the turbidity tank, detects whether there are bubbles, can promptly detect and deal with bubble problems, ensure the stability of measurement conditions, and thus improve the accuracy of turbidity measurement.

[0021] (3) By installing a pressure sensor in the turbidity tank, this utility model can monitor the pressure of the liquid in the turbidity tank in real time, which can ensure that the system operates within a safe pressure range and prevent equipment damage or safety accidents caused by excessive pressure.

[0022] In summary, this utility model has the advantages of fast reaction speed, high working efficiency, more accurate detection results, good sealing performance, simple structure and convenient assembly and disassembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A;

[0025] Figure 3 This is a schematic diagram of the structure of this utility model installed in a storage tank. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Example

[0029] like Figures 1-3 As shown, this embodiment provides a turbidity meter flow cell with no dead angle, including: a turbidity cell 1, a turbidity meter 2 disposed on one side of the turbidity cell 1, a pneumatic ball valve 3 disposed at one end of the turbidity meter 2 and connected to the turbidity cell 1, and a pneumatic diaphragm valve assembly 4 disposed at the other end of the turbidity cell 1. The pneumatic ball valve 3 can remotely and effectively cut off the flow of media inside the pipe in the turbidity cell 1, allowing operators to operate from a safe distance, especially when handling hazardous or corrosive media, greatly improving operational safety; the diaphragm valve assembly can remotely, efficiently, quickly, and accurately cut off the flow of media inside the pipe. The flow of the medium inside the pipe in the turbidity tank 1 allows for flexible control of the medium's flow direction and flow rate, reducing the medium's residence time in the pipe and improving the timeliness and accuracy of measurements. Furthermore, the precise control capability prevents medium leakage and ensures the system's airtightness. The turbidity tank 1 features a dead-angle-free design, avoiding medium stagnation and dead zones in the pipe, ensuring smooth medium flow, reducing medium accumulation in the pipe, avoiding measurement errors caused by accumulation, and improving measurement accuracy and reliability. The turbidity meter 2 needs to ensure a detection light wave range of 10cm.

[0030] The turbidity cell 1 is equipped with a glass sight glass 5 at one end to observe the flow direction and flow of the liquid, detect whether there are air bubbles, and promptly detect and deal with air bubble problems to ensure the stability of measurement conditions and thus improve the accuracy of turbidity measurement.

[0031] Meanwhile, a pressure sensor 6 is provided on one side of the glass sight glass 5 to monitor the pressure of the liquid in the turbidity tank 1 in real time, which can ensure that the system operates within a safe pressure range and prevent equipment damage or safety accidents caused by excessive pressure.

[0032] In this embodiment, the turbidity tank 1 is connected to the filter 7. The filter 7 can pre-treat the liquid entering the turbidity tank 1, remove large particulate impurities from the liquid, reduce the interference of these impurities on turbidity measurement, and improve the accuracy and reliability of the measurement. The filter 7 is preferably a three-core 30-inch type to ensure high-purity filtration.

[0033] In this embodiment, one end of the pneumatic ball valve 3 is provided with a connecting pipe 31, which can guide the liquid to different processing stages in order to measure various parameters (such as pressure and temperature).

[0034] In this embodiment, a drain pipe 32 is provided at one end of the connecting pipe 31, which can discharge the treated liquid from the system, generally for the discharge of condensate.

[0035] In this embodiment, a temperature sensor 33 is provided at the other end of the connecting pipe 31, which can monitor the real-time temperature. Temperature is an important factor affecting turbidity measurement. By monitoring the temperature, temperature compensation can be performed on the measurement results to improve the accuracy of the measurement.

[0036] In this embodiment, a steam trap 34 is provided between the connecting pipe 31 and the drainage pipe 32. This steam trap can block steam and drain water, automatically draining condensate from the pipe to prevent condensate buildup and avoid measurement errors or equipment damage caused by condensate.

[0037] In this embodiment, a wastewater pipe 35 is provided on one side of the drainage pipe 32. The wastewater pipe 35 is located at one of the output ports of the filter 7 to directly discharge the wastewater therein. The operation is simple and convenient.

[0038] In this embodiment, the filter 7 is generally used in conjunction with multiple storage tanks 8. Multiple turbidity pools 1 can be set on both sides of the filter 7, and turbidity meters 2 are installed accordingly to accurately measure the required parameters. Multiple filters 7 can be installed to form a deep filtration system.

[0039] In this embodiment, the medicinal liquid is harvested through a deep filtration system to obtain qualified medicinal liquid, which is then stored in intermediate product storage tank 8 for the next stage of preparation. Specifically, the unfiltered medicinal liquid is filtered through filter 7 under the control of a pneumatic diaphragm valve. The developed turbidity meter 2 flow cell, which has no dead angle, is installed to immediately test the filtered medicinal liquid. If the test is qualified, it can be directly transported to storage tank 8 for use. If it is unqualified, it needs to be filtered multiple times until the medicinal liquid is qualified before being transported to storage tank 8 for storage.

[0040] Of course, the turbidimeter 2 is connected to the electrical cabinet via a fiber optic cable, and the electrical cabinet then feeds the signal back to the HMI control panel. The whole process is simple to operate and easy to use. However, as a precision instrument, the turbidimeter 2 is extremely sensitive to signal interference and is very easily interfered with by other signal data. Therefore, its specially made fiber optic cable (to protect the stability of the data signal) is extremely expensive. Therefore, when designing the location of the electrical cabinet, considering the accuracy and stability of the turbidimeter 2, the electrical cabinet must be located near the turbidimeter 2 instrument.

[0041] In addition, the liquid medicine is directly transported to the storage tank 8 for testing through the harvest deep filtration system. If the expected purity is not achieved, it will be repeatedly filtered through the harvest deep filter 7. This requires adding a large number of pipelines and valves to control the process of transporting the liquid medicine from the storage tank 8 to the harvest deep filter 7, and investing a lot of time in cleaning and sterilizing the equipment.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dead cell-free turbidimeter flow cell, characterized by, include: The turbidity pool includes a turbidity meter located on one side of the turbidity pool, a pneumatic ball valve located at one end of the turbidity meter and connected to the turbidity pool, and a pneumatic diaphragm valve assembly located at the other end of the turbidity pool. The turbidity pool is designed to be free of dead zones.

2. A flow cell for a dead leg free turbidimeter according to claim 1, wherein, A glass sight glass is installed at one end of the turbidity tank.

3. A flow cell for a dead leg free turbidimeter according to claim 2, wherein, A pressure sensor is provided on one side of the glass sight glass.

4. A flow cell for a dead leg free turbidimeter according to claim 1, wherein, The turbidity tank is connected to the filter.

5. A flow cell for a dead leg free turbidimeter according to claim 1, wherein, One end of the pneumatic ball valve is provided with a connecting pipe.

6. A flow cell for a dead leg free turbidimeter according to claim 5, wherein, A drainage pipe is provided at one end of the connecting pipe.

7. A flow cell for a dead leg free turbidimeter according to claim 6, wherein, A temperature sensor is installed at the other end of the connecting pipe.

8. A flow cell for a dead leg free turbidimeter according to claim 6, wherein, A drain valve is installed between the connecting pipe and the drainage pipe.

9. A flow cell for a dead leg free turbidimeter according to claim 6, wherein, A wastewater pipe is installed on one side of the drainage pipe.

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