Online active degassing device with auxiliary control function
By utilizing an online active degassing device with a hydrophobic venting tube and a negative pressure generating device, the problem of bubble peaks affecting detection in flow injection analyzers was solved, achieving efficient and rapid degassing and improving the accuracy and stability of detection results.
Patent Information
- Application Number
- CN202422760424.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing flow injection analyzers lack online degassing capabilities, resulting in dissolved air in the reagent solution precipitating as bubble peaks, which affects the accuracy and stability of the test results. Furthermore, commonly used degassing methods are time-consuming, costly, and prone to contamination or incomplete.
An online active degassing device was designed, comprising a hydrophobic venting tube, a flow channel dispersion tube, a bubble sensor, and a negative pressure generating device. The gas is discharged from the sealed housing through the hydrophobic venting tube, the bubbles are guided to the inner wall by the flow channel dispersion tube, and the bubbles are actively extracted by the negative pressure generating device, thus achieving efficient degassing.
It achieves efficient and rapid degassing, reduces operational complexity and cost, improves the accuracy and stability of test results, has fault detection and prompting functions, and adapts to degassing needs under different pressure conditions.
Smart Images
Figure CN223586633U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water quality analysis field especially, and is a kind of online active degassing device with auxiliary control function. BACKGROUND
[0002] The existing flow injection analyzer product on market generally does not have online degassing function, and needs to be carried out off-line degassing treatment of reagent solution by corresponding equipment in daily use process, and then reagent solution can be used and detected;The reason why reagent solution must be degassed is that the air dissolved in reagent solution will gradually precipitate in reaction pipeline, and form bubble peak in detection, so that detection result is disturbed, and the accuracy and stability of detection result are influenced.
[0003] The commonly used degassing methods include helium degassing, microporous membrane vacuum filtration, ultrasonic vacuum combined degassing and the like.The above-mentioned degassing methods generally have the defects of long time consumption, many operation steps, high cost and easy to cause reagent solution pollution;In addition, some degassing methods use the dynamic pressure of liquid flow in reaction pipeline to cooperate with the selective permeability of hydrophobic gas permeable membrane to degas, and these methods have the problem of incomplete degassing, and degassing failure will occur when pipeline is in negative pressure state.In actual work, pipeline abnormalities such as air suction caused by reagent inlet pipe suction or joint loosening will also cause bubble peak, which can be solved by reagent degassing, but will also cause abnormal color reaction, so it is necessary to detect such problems and give corresponding prompt and operation information. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of online active degassing device with auxiliary control function of high degassing efficiency.
[0005] The online active degassing device with auxiliary control function of the utility model, including bottom plate, the sealing shell that is set on the bottom plate and the hydrophobic gas permeable tube that is set in sealing shell, the both ends of the hydrophobic gas permeable tube are connected liquid inlet end, liquid outlet end respectively, the hydrophobic gas permeable tube is used to discharge the gas in the liquid in pipe to sealing shell, negative pressure and waste liquid connection pipe are installed on the bottom plate, one end of the negative pressure and waste liquid connection pipe is inserted into the sealing shell, for the air and waste liquid in sealing shell are discharged.
[0006] The online active degassing device with auxiliary control function of the utility model, wherein, flow channel dispersion pipe is arranged in the hydrophobic gas permeable tube, the flow channel dispersion pipe includes a plurality of flow channels, for guiding the bubble contained in the liquid in the hydrophobic gas permeable tube to the inner wall of the hydrophobic gas permeable tube.
[0007] The utility model discloses an online active degassing device with auxiliary control function, wherein, at least one bubble sensor is installed at the liquid inlet end, at least one bubble sensor is installed at the liquid outlet end, at least one bubble sensor is installed at the outer end of the negative pressure and waste liquid connecting pipe, the negative pressure and waste liquid connecting pipe is connected with the negative pressure generating device for generating negative pressure, the bubble sensors are connected with the controller respectively, the controller is connected with the negative pressure generating device, the bubble sensors are used for detecting the bubble condition of the liquid inlet end, the bubble condition of the liquid outlet end, the bubble condition in the negative pressure and waste liquid connecting pipe and the waste liquid discharge condition respectively, and the controller starts or closes the negative pressure generating device according to the detection signal.
[0008] The utility model discloses an online active degassing device with auxiliary control function, wherein, the first protection cover for protecting the bubble sensor of liquid inlet end, the second protection cover for protecting the bubble sensor of liquid outlet end, the third protection cover for protecting the negative pressure and waste liquid connecting pipe are arranged on the bottom plate.
[0009] The utility model discloses an online active degassing device with auxiliary control function, wherein, the hydrophobic and breathable pipe is "U" shape, both ends of the hydrophobic and breathable pipe are at the first side of the sealed shell, and one end of the negative pressure and waste liquid connecting pipe extends into the sealed shell from the second side opposite to the first side.
[0010] The utility model discloses an online active degassing device with auxiliary control function has the following advantages: multiple use modes, long service life, routine maintenance-free, simple replacement and good degassing effect. DRAWINGS
[0011] Figure 1 It is the structure schematic diagram's perspective drawing of online active degassing device with auxiliary control function of the utility model;
[0012] Figure 2 It is the structure schematic diagram's plan view of online active degassing device with auxiliary control function of the utility model;
[0013] Figure 3 It is the structure schematic diagram's plan view of flow channel dispersion pipe;
[0014] Figure 4 It is the structure schematic diagram's front view of flow channel dispersion pipe. DETAILED DESCRIPTION
[0015] As Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the online active degassing device with auxiliary control function comprises a bottom plate 10, a sealing shell 3 arranged on the bottom plate, and a hydrophobic and breathable pipe 7 arranged in the sealing shell, both ends of the hydrophobic and breathable pipe are connected with a liquid inlet end 11 and a liquid outlet end 12 respectively, the hydrophobic and breathable pipe is used for discharging the gas in the liquid in the pipe into the sealing shell, a negative pressure and waste liquid connecting pipe 8 is arranged on the bottom plate, one end of the negative pressure and waste liquid connecting pipe extends into the sealing shell and is used for discharging the air and waste liquid in the sealing shell.
[0016] The online active degassing device with auxiliary control function comprises a hydrophobic and breathable pipe, a flow channel dispersing pipe 6 is arranged in the hydrophobic and breathable pipe, the flow channel dispersing pipe comprises a plurality of flow channels 61 and is used for guiding the gas bubbles contained in the liquid in the hydrophobic and breathable pipe to the inner wall of the hydrophobic and breathable pipe.
[0017] The online active degassing device with auxiliary control function comprises a hydrophobic and breathable pipe, at least one bubble sensor 9 is arranged on the liquid inlet end, at least one bubble sensor 9 is arranged on the liquid outlet end, at least one bubble sensor 9 is arranged on the outer end of the negative pressure and waste liquid connecting pipe, the negative pressure and waste liquid connecting pipe is connected with a negative pressure generating device (not shown in the figure) used for generating negative pressure, the bubble sensors 9 are connected with a controller respectively, the controller is connected with the negative pressure generating device, the bubble sensors are used for detecting the bubble conditions of the liquid inlet end, the bubble conditions of the liquid outlet end, the bubble conditions in the negative pressure and waste liquid connecting pipe and the waste liquid discharge condition respectively, and the controller starts or stops the negative pressure generating device according to the detection signals.
[0018] The negative pressure generating device can be a micro air pump.
[0019] The online active degassing device with auxiliary control function comprises a hydrophobic and breathable pipe, a first protective cover 41 for protecting the bubble sensor of the liquid inlet end, a second protective cover 42 for protecting the bubble sensor of the liquid outlet end, and a third protective cover 43 for protecting the negative pressure and waste liquid connecting pipe are arranged on the bottom plate.
[0020] The online active degassing device with auxiliary control function comprises a hydrophobic and breathable pipe, a first protective cover 41 for protecting the bubble sensor of the liquid inlet end, a second protective cover 42 for protecting the bubble sensor of the liquid outlet end, and a third protective cover 43 for protecting the negative pressure and waste liquid connecting pipe are arranged on the bottom plate.
[0021] The online active degassing device with auxiliary control function is a kind of online active degassing device with auxiliary control function that can be applied to portable, unmanned ship, vehicle flow injection analyzer and online water quality analyzer based on the principle of flow injection.
[0022] The online active degassing device with auxiliary control function comprises a bottom plate, at least three bubble sensors and a sealed shell 3, the bubble sensors are fixed on the bottom plate and are protected by an outer cover.
[0023] The liquid inlet end 11 is a capillary for liquid inlet, and the liquid outlet end 12 is a capillary for liquid outlet. The capillary for liquid inlet is connected to one end of the hydrophobic and air-permeable pipe through a joint 5, the capillary for liquid outlet is connected to the other end of the hydrophobic and air-permeable pipe through a joint 5, the bubble sensors detect the bubble conditions in the liquid inlet end, the bubble conditions in the liquid outlet end and the waste liquid discharge condition respectively, and according to the feedback detection signals, the controller analyzes whether the liquid inlet is normal, whether there is air suction, whether the degassing efficiency of the hydrophobic and air-permeable pipe 7 and the negative pressure and waste liquid connecting pipe 8 is normal, whether the hydrophobic and air-permeable pipe 7 needs to be replaced and whether the external negative pressure generating device is started, and provides corresponding operation prompt information according to the corresponding judgment results.
[0024] The online active degassing device with auxiliary control function has the advantages of strong adaptability, long service life, daily maintenance-free, simple replacement, good degassing effect and the like.
[0025] The online active degassing device with auxiliary control function can work with other instruments and workstations, or can work independently.
[0026] The sealed shell 3 of the online active degassing device with auxiliary control function and the hydrophobic and air-permeable pipe 7 arranged in the sealed shell are called a degassing module, the degassing module is fixed in the middle of the bottom plate as a whole through a pin, and can be directly taken off for replacement.
[0027] Specifically, the bubble sensors detect the number of bubbles in the inflow capillary and the outflow capillary and the number of waste liquid droplets, judge the working state of the degassing module, judge whether the degassing module needs to be replaced, whether the instrument liquid inlet is abnormal and control the working state of the external negative pressure generating device.
[0028] The degassing module can be directly taken off from the bottom plate for replacement.
[0029] The dispersion flow channel pipe 6 is inserted into the hydrophobic gas permeable pipe 7, then the hydrophobic gas permeable pipe is inserted into the joint 5, and the whole is installed in the sealed shell 3. The dispersion flow channel pipe has a plurality of flow guide vanes 62, after being inserted into the hydrophobic gas permeable pipe, the reagent solution flowing into the hydrophobic gas permeable pipe is dispersed into the flow channels 61 formed between the flow guide vanes 62 of the dispersion flow channel pipe and the wall of the hydrophobic gas permeable pipe, when there are bubbles in the solution, the bubbles are dispersed with the solution, enter the flow channels, and contact the inner surface of the hydrophobic gas permeable pipe, and due to the selective permeability of the hydrophobic gas permeable pipe to gas, the dynamic pressure of the solution flow and the negative pressure generated in the sealed shell by the externally connected negative pressure generating device, the bubbles are separated from the surface of the hydrophobic gas permeable pipe, thereby realizing the effect of active online degassing of the solution in the reaction pipeline under the conditions of positive pressure and negative pressure.
[0030] The online active degassing device with auxiliary control function is different from the technical scheme of the prior art which passively lets the bubbles separate from the surface of the membrane or the pipe by selecting a permeable membrane or a micro-porous degassing pipe and utilizing the dynamic pressure of the liquid flow in the pipeline.
[0031] The online active degassing device with auxiliary control function utilizes the dispersion flow channel pipe built in the hydrophobic gas permeable pipe to guide the bubbles in the flowing liquid to the inner wall of the hydrophobic gas permeable pipe, prevents the micro-bubbles from flowing away with the liquid without contacting the inner surface of the hydrophobic gas permeable pipe, and increases the degassing probability; in addition, the sealed shell 3 cooperates with the external negative pressure generating device to form a negative pressure in the sealed shell, and the bubbles existing in the hydrophobic gas permeable pipe are directly extracted by utilizing the hydrophobic gas permeability of the hydrophobic gas permeable pipe, thereby further improving the degassing effect.
[0032] In actual use, the degassing module can be separated from the bottom plate and used alone, or can be selected and installed at any position of the reaction pipeline.
[0033] The online active degassing device with auxiliary control function introduces a negative pressure into the degassing module, and compared with the mode of relying on the positive pressure generated by the liquid flow in the pipeline to extrude the bubbles from the gas permeable membrane or the gas permeable pipe, the introduction of the negative pressure can actively extract the bubbles in the pipeline, and the degassing demand of the pipeline under different pressure conditions such as positive pressure or negative pressure can be met without relying on the pressure in the pipeline; the degassing module is a whole, and the replacement in the later period is simple, only needs to twist off the joint and directly pull out the degassing module, and does not need complex operation; finally, the degassing effect can be detected and analyzed in real time, the negative pressure state of the degassing module is adjusted in real time according to the analysis result, and whether there is a fault can be judged according to the situation of the abnormal bubbles, and corresponding operation prompt is given, thereby facilitating the user to solve the fault problem.
[0034] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can also make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.
Claims
1. An online active degassing device with auxiliary control function, characterized in that, The device includes a base plate, a sealing shell disposed on the base plate, and a hydrophobic vent pipe disposed within the sealing shell. The two ends of the hydrophobic vent pipe are respectively connected to an inlet and an outlet. The hydrophobic vent pipe is used to discharge gas in the liquid inside the pipe into the sealing shell. A negative pressure and waste liquid connection pipe is installed on the base plate. One end of the negative pressure and waste liquid connection pipe extends into the sealing shell to discharge air and waste liquid inside the sealing shell. A flow channel dispersion pipe is disposed inside the hydrophobic vent pipe. The flow channel dispersion pipe includes multiple flow channels to guide air bubbles contained in the liquid inside the hydrophobic vent pipe to the inner wall of the hydrophobic vent pipe.
2. The online active degassing device with auxiliary control function according to claim 1, characterized in that, At least one bubble sensor is installed at the inlet end, at least one bubble sensor is installed at the outlet end, and at least one bubble sensor is installed at the outer end of the negative pressure and waste liquid connection pipe. The negative pressure and waste liquid connection pipe is connected to a negative pressure generating device for generating negative pressure. The bubble sensors are respectively connected to a controller, and the controller is connected to the negative pressure generating device. The bubble sensors are used to detect the bubble situation at the inlet end, the bubble situation at the outlet end, the bubble situation in the negative pressure and waste liquid connection pipe, and the waste liquid discharge situation. The controller starts or stops the negative pressure generating device according to the detection signal.
3. The online active degassing device with auxiliary control function according to claim 2, characterized in that, The base plate is provided with a first protective cover for protecting the bubble sensor at the liquid inlet end, a second protective cover for protecting the bubble sensor at the liquid outlet end, and a third protective cover for protecting the negative pressure and waste liquid connection pipe.
4. The online active degassing device with auxiliary control function according to claim 3, characterized in that, The hydrophobic and breathable tube is U-shaped, with both ends of the hydrophobic and breathable tube located on the first side of the sealed housing. One end of the negative pressure and waste liquid connection tube extends into the sealed housing from the second side opposite to the first side.