Device for detecting total organic carbon content in water sample

Abstract

The embodiment of the utility model discloses a device for detecting the total organic carbon content in a water sample, and relates to the technical field of organic carbon detection. The device for detecting the total organic carbon content in the water sample is composed of a water sample collection pipeline, an oxidation assembly and a detection assembly, the water sample collection pipeline is used for collecting the water sample to be detected, the oxidation assembly is used for carrying out oxidation treatment on the water sample to be detected, and the detection assembly is used for carrying out carbon dioxide detection on the oxidized water sample. In the process of oxidizing the to-be-detected water sample, the ultrasonic oscillator and the stirring mechanism are arranged, so that the to-be-detected water sample can fully react with a catalyst in the oxidizing furnace, the complete reaction of the catalyst in the oxidizing furnace is ensured as far as possible, and the detection accuracy is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of organic carbon detection, in particular to a device for detecting total organic carbon content in water samples. BACKGROUND

[0002] The detection of total organic carbon (TOC) usually adopts combustion oxidation method, catalytic oxidation method or wet chemical method to measure the total organic carbon content in water samples. The basic process is usually as follows: the water sample is introduced into the analysis system through the equipment; the organic carbon in the water is converted into carbon dioxide at high temperature. In the combustion oxidation method, the organic matter in the water sample is converted into carbon dioxide through oxidation reaction; the converted carbon dioxide is measured by a gas detector (such as an infrared gas analyzer), so as to obtain the total organic carbon content in the water sample. The combustion oxidation method needs to use a catalyst to promote the oxidation of organic carbon, but in the actual reaction process, the catalyst may not be completely reacted, thereby affecting the accuracy of the measurement. CONTENT OF THE INVENTION

[0003] The embodiments of the present application provide a device for detecting total organic carbon content in water samples, so as to improve the problem of incomplete reaction of the catalyst in the combustion oxidation method.

[0004] The embodiments of the present application provide a device for detecting total organic carbon content in water samples, comprising:

[0005] A water sample collection pipeline for collecting a water sample to be detected;

[0006] An oxidation assembly in communication with the water sample collection pipeline, for the water sample to be detected to perform an oxidation reaction;

[0007] A detection assembly in communication with one end of the oxidation assembly away from the water sample collection pipeline;

[0008] The oxidation assembly comprises an oxidation furnace, an ultrasonic oscillator and a stirring mechanism, the input end of the oxidation furnace is in communication with the water sample collection pipeline, and the output end is in communication with the detection assembly, the ultrasonic oscillator is arranged on the surface of the oxidation furnace, the oscillation generated by the ultrasonic oscillator of the ultrasonic oscillator can be transmitted to the inside of the oxidation furnace to form oscillation for the water sample to be detected in the oxidation furnace, and the stirring mechanism is arranged at the bottom of the oxidation furnace, and the stirring end of the stirring mechanism is arranged in the oxidation furnace.

[0009] In some embodiments of the present application, the oxidation furnace comprises an outer shell, an oscillation transmission layer and an oxidation layer arranged in sequence from the outside to the inside, the ultrasonic oscillator is coupled to the oscillation transmission layer, the oxidation layer defines an oxidation cavity, and the water sample to be detected is located in the oxidation cavity.

[0010] In some embodiments of the present application, the oxidation layer comprises at least one oxidizing agent attached to the shock transmission layer.

[0011] In some embodiments of the present application, the ultrasonic oscillator is fixed to the surface of the outer shell, and the output end of the ultrasonic oscillator extends into the outer shell and is in contact with the shock transmission layer.

[0012] In some embodiments of the present application, a plurality of the ultrasonic oscillators are arranged in an array along the surface of the outer shell.

[0013] In some embodiments of the present application, the distance between adjacent ultrasonic oscillators is not less than the distance that one ultrasonic oscillator can drive the shock transmission layer to vibrate.

[0014] In some embodiments of the present application, the outer shell is provided with a through hole and exposes part of the shock transmission layer, the output end of the ultrasonic oscillator extends into the through hole, and an elastic sealing ring is arranged between the inner wall of the through hole and the ultrasonic oscillator.

[0015] In some embodiments of the present application, the stirring mechanism comprises a motor, a stirring shaft and a plurality of blades, the motor is fixed to the bottom of the outer shell, the stirring shaft is connected to the output end of the motor and extends into the oxidation cavity, and a plurality of blades are arranged around the circumference of the stirring shaft.

[0016] In some embodiments of the present application, a plurality of the blades are arranged in a spiral along the axial direction of the stirring shaft.

[0017] In some embodiments of the present application, the blades are spiral and a plurality of flow holes are formed in the blades.

[0018] Therefore, the device for detecting the total organic carbon content in water sample disclosed by the embodiments of the present application comprises a water sample collection pipeline, an oxidation assembly and a detection assembly. The water sample collection pipeline is used to collect the water sample to be detected. The oxidation assembly is used to oxidize the water sample to be detected. The detection assembly is used to detect the carbon dioxide in the oxidized water sample. In the process of oxidizing the water sample to be detected, the ultrasonic oscillator and the stirring mechanism are arranged to make the water sample to be detected and the catalyst in the oxidation furnace fully react, to ensure that the catalyst in the oxidation furnace fully reacts as much as possible, thereby improving the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a device for detecting the total organic carbon content in a water sample, provided as an embodiment of this application;

[0021] Figure 2 A schematic diagram of the structure of an oxidation component in an apparatus for detecting the total organic carbon content in a water sample, provided in an embodiment of this application;

[0022] Figure 3 for Figure 2 A schematic cross-sectional view of the provided oxidation assembly;

[0023] Figure 4 for Figure 2 A cross-sectional schematic diagram of the oxidation furnace in the provided oxidation assembly;

[0024] Figure 5 for Figure 2 A schematic diagram of the stirring mechanism in the provided oxidation assembly.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Water sample collection pipeline; 2. Oxidation assembly; 21. Oxidation furnace; 211. Outer shell; 2111. Through hole; 212. Vibration transmission layer; 213. Oxidation layer; 22. Ultrasonic vibrator; 23. Stirring mechanism; 231. Motor; 232. Stirring shaft; 233. Blades; 3. Detection assembly. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] See Figures 1 to 5 Embodiments of the present application provide a device for detecting total organic carbon content in water sample, comprising water sample collection pipeline 1, oxidation assembly 2 and detection assembly 3. Water sample collection pipeline 1 is used to collect water sample to be detected; oxidation assembly 2 is in communication with water sample collection pipeline 1, for the water sample to be detected to carry out oxidation reaction; detection assembly 3 is in communication with the end of oxidation assembly 2 away from water sample collection pipeline 1. Water sample collection pipeline 1 is used to collect water sample to be detected and deliver it to oxidation assembly 2, and the water sample is pretreated in the process, such as filtration, degassing, etc., to ensure the accuracy of the subsequent oxidation reaction. Detection assembly 3 is connected with oxidation assembly 2, for detecting the concentration of oxidation product carbon dioxide and calculating the total organic carbon content in the water sample accordingly.

[0030] Among them, oxidation assembly 2 includes oxidation furnace 21, ultrasonic oscillator 22 and stirring mechanism 23. The input end of oxidation furnace 21 is in communication with water sample collection pipeline 1, and the output end is in communication with detection assembly 3; ultrasonic oscillator 22 is arranged on the surface of oxidation furnace 21, and the oscillation generated by the ultrasonic wave of ultrasonic oscillator 22 can be transmitted to the inside of oxidation furnace 21 to form oscillation for the water sample to be detected in oxidation furnace 21; stirring mechanism 23 is arranged at the bottom of oxidation furnace 21, and the stirring end of stirring mechanism 23 is arranged in oxidation furnace 21. The water sample is completely oxidized under the action of high temperature and catalyst after entering oxidation furnace 21. Ultrasonic oscillator 22 transmits oscillation energy to the inside of oxidation furnace 21 through coupling mode, improving the activity of catalyst surface and the reaction efficiency of water sample; stirring mechanism 23 further improves the fluid mixing property in the oxidation cavity, avoiding uneven reaction.

[0031] The technical scheme provided in the application sets the ultrasonic oscillator 22 and the stirring mechanism 23, so that the water sample to be detected can fully react with the catalyst in the oxidation furnace 21, and the complete reaction of the catalyst in the oxidation furnace 21 is ensured as much as possible, thereby improving the detection accuracy. Specifically, the water sample to be detected enters the oxidation assembly 2 through the water sample collection pipeline 1 and is introduced into the oxidation cavity in the oxidation furnace 21. The organic matter in the water sample in the oxidation cavity is oxidized into carbon dioxide under the action of high temperature and the catalyst, and at the same time, the ultrasonic oscillator 22 excites liquid micro-disturbance through high-frequency vibration to further improve the efficiency of the catalytic reaction; the stirring mechanism 23 rotates at low speed to guide the water sample to flow, avoiding reaction stagnation. The product (carbon dioxide) after oxidation flows into the detection assembly 3 through the output end, the detection assembly 3 analyzes the concentration of carbon dioxide, and calculates the total organic carbon content in the water sample. The ultrasonic oscillator 22 generates high-frequency vibration (20-40 kHz) to excite cavitation effect in the liquid. The cavitation effect refers to the generation of micro-bubbles in the liquid, and when the bubbles burst, high energy is released to remove the reaction residues on the surface of the catalyst. The vibration also causes turbulent motion in the liquid, promotes the contact between the water sample and the catalyst, and improves the catalytic efficiency. The stirring mechanism 23 excites liquid turbulence by rotating, and the combination of ultrasonic oscillation and the stirring mechanism 23 ensures that the water sample in the oxidation cavity and the catalyst are always in full contact, solving the problems of incomplete reaction of the catalyst and local reaction stagnation in the existing combustion oxidation method.

[0032] In some embodiments, see Figure 2 , Figure 3 and Figure 4The oxidation furnace 21 comprises, from outside to inside, an outer shell 211, a shock transmission layer 212, and an oxidation layer 213. The ultrasonic oscillator 22 is coupled to the shock transmission layer 212, and the oxidation layer 213 defines an oxidation cavity in which the water sample to be detected is located. The outer shell 211 serves as the outermost layer of the oxidation furnace 21 and mainly provides a strong support structure and isolates the external environment. The outer shell 211 is made of stainless steel (such as 316L stainless steel) or special alloy steel with excellent high-temperature resistance and corrosion resistance, and has a thickness of usually 3-10 mm, which can withstand a working temperature of up to 1000°C and a high-pressure environment during the oxidation reaction. The surface of the outer shell 211 is designed to be smooth, facilitating the installation of the ultrasonic oscillator 22 and ensuring that the shock energy can be efficiently transmitted to the inner layer through the outer shell 211. At the same time, the outer shell 211 needs to be connected to other components (such as sample inlet pipelines and exhaust pipelines) through flanges or threads to ensure good sealing performance. The shock transmission layer 212 is arranged between the outer shell 211 and the oxidation layer 213 and mainly functions to efficiently transmit the vibration energy generated by the ultrasonic oscillator 22, while also serving as a heat insulating and shock-conducting layer. The shock transmission layer 212 is made of high-shock-conducting ceramic (such as alumina ceramic or zirconia ceramic), which has good mechanical strength and shock-conducting performance, and can withstand high temperatures and strong oxidation environments. The thickness of the ceramic layer is designed to be 1-5 mm, which ensures sufficient shock-conducting performance and avoids excessive loss of shock energy. Further, the surface of the shock transmission layer 212 is designed to be micro-convex grid-shaped or striped to increase the contact area with the oxidation layer 213, thereby improving the transmission efficiency of the shock energy and uniformly distributing the ultrasonic vibration to avoid local insufficient oscillation in the oxidation cavity. The oxidation layer 213 is located at the innermost layer of the oxidation furnace 21 and is composed of a catalyst and a ceramic support structure, which is used to accelerate the oxidation reaction of organic matter in the water sample. The catalyst (such as platinum, palladium, or their alloys) is coated on the surface of ceramic particles or ceramic grids. The ceramic support structure is in close contact with the shock transmission layer 212, ensuring that the vibration energy can be efficiently transmitted to the surface of the catalyst through the shock transmission layer 212, thereby improving the activity of the catalyst. The coating process adopts chemical vapor deposition (CVD) or impregnation calcination to form a uniform and stable catalyst layer.

[0033] Further, the oxidation layer 213 is a multi-layer structure and comprises at least one type of catalyst, and the particle size of the catalyst particles in each layer can be the same or different, and the particle size gradually decreases to increase the specific surface area, thereby further improving the oxidation efficiency.

[0034] In some embodiments, referring to Figure 2 and Figure 3, the ultrasonic oscillator 22 is fixed to the surface of the outer shell 211, and the output end of the ultrasonic oscillator 22 extends into the outer shell 211 and is in contact with the oscillation transmission layer 212. The ultrasonic oscillator 22 is firmly installed on the outer surface of the outer shell 211 of the oxidation furnace 21 through a flange structure or a clamping device, and the contact surface between the ultrasonic oscillator 22 and the outer shell 211 is precisely polished to reduce the loss of vibration energy caused by surface roughness during installation. The position of the ultrasonic oscillator 22 is uniformly distributed according to the geometric shape of the outer shell 211 of the oxidation furnace 21, and is preferably installed at the middle of the side wall of the oxidation furnace 21 or near the key catalytic area to optimize the transmission path of the vibration energy. The output end of the ultrasonic oscillator 22 is a conical or cylindrical probe, and the probe material is selected from high-strength titanium alloy or stainless steel to ensure its long-term stability in high-frequency vibration and high-temperature environment. The output end extends inward through a specific through hole 2111 of the outer shell 211 until it contacts the oscillation transmission layer 212. The diameter of the through hole 2111 is slightly larger than the diameter of the probe to ensure smooth insertion of the probe and a certain amount of thermal expansion. The probe end of the output end is in direct contact with the surface of the oscillation transmission layer 212, and the stable contact state is maintained through pre-tightening force (such as bolt fixation or spring loading). The contact point position is the high-shock-conducting area of the oscillation transmission layer 212 (such as the center or multiple points uniformly distributed). A high-shock-conducting coupling material (such as heat-conducting silicone grease or flexible shock-conducting pad) can be added between the probe and the oscillation transmission layer 212 to further reduce the loss of vibration energy during transmission. A high-temperature elastic sealing ring (such as silicone or fluororubber material) is installed around the through hole 2111 to ensure that the extended part of the probe maintains airtightness with the outer shell 211, preventing high-temperature gas leakage in the oxidation furnace 21. The ultrasonic oscillator 22 is equipped with air-cooled or water-cooled heat dissipation devices outside to reduce heat accumulation caused by high-frequency vibration and high-temperature environment.

[0035] Further, the plurality of ultrasonic oscillators 22 are arranged in an array on the surface of the outer shell 211 to ensure efficient coverage of the vibration energy. Specifically, the following two arrangements can be included: the ultrasonic oscillators 22 are arranged in a matrix, i.e., a regular arrangement of multiple rows and columns on the surface of the outer shell 211. The row and column distances between the matrixes are equal to ensure that the oscillation transmission layer 212 can be uniformly subjected to the vibration of each oscillator. For the cylindrical outer shell 211 of the oxidation furnace 21, the ultrasonic oscillators 22 are uniformly arranged along the circumference of the outer shell 211. The annular distribution design is particularly suitable for the case where the catalyst layer is distributed in the annular area of the oxidation chamber, and can effectively cover the entire catalyst area. According to the volume of the oxidation furnace 21 and the vibration transmission performance of the oscillation transmission layer 212, 6-12 ultrasonic oscillators 22 are preferably arranged. The number of oscillators needs to be matched with the vibration demand of the oscillation transmission layer 212 to avoid incomplete coverage of the vibration area due to insufficient number or energy waste due to excessive number. The center distance between adjacent ultrasonic oscillators 22 is determined according to the effective oscillation coverage range, which is preferably 1.5-2 times the coverage diameter of the oscillator to avoid vibration interference between adjacent oscillators while ensuring the uniformity of the vibration of the oscillation transmission layer 212. Each ultrasonic oscillator 22 is installed on the surface of the outer shell 211 by independent fixing device (such as bolt flange or buckle type bracket), and the output end extends into the interior of the outer shell 211 and contacts the oscillation transmission layer 212.

[0036] In some embodiments, the distance between adjacent ultrasonic oscillators 22 is not less than the distance that one ultrasonic oscillator 22 can drive the oscillation transmission layer 212 to vibrate. The effective vibration coverage range of the ultrasonic oscillator 22 refers to the area in the oscillation transmission layer 212 where the oscillator can produce a significant vibration effect. The range is determined by the frequency, power of the oscillator and the vibration transmission performance of the oscillation transmission layer 212 material, and usually presents a circular or elliptical distribution. In this application, the effective vibration coverage radius of the ultrasonic oscillator 22 with a frequency of 20-40 kHz and a power of 50-200 W is 50-150 mm. The center distance between adjacent ultrasonic oscillators 22 (hereinafter referred to as "oscillator spacing") is set to be not less than the effective vibration coverage radius of a single ultrasonic oscillator 22 to avoid repeated superposition or phase interference of vibration energy while ensuring the overall vibration effect of the oscillation transmission layer 212. Preferably, the oscillator spacing is 1.5 times the effective vibration coverage radius to reduce the number of oscillators without reducing the vibration uniformity and improve energy utilization.

[0037] In some embodiments, the outer shell 211 is provided with a through hole 2111 and exposes part of the oscillation transmission layer 212, the output end of the ultrasonic oscillator 22 extends to the through hole 2111, and an elastic sealing ring is arranged between the inner wall of the through hole 2111 and the output end of the ultrasonic oscillator 22. The diameter of the through hole 2111 is slightly larger than the diameter of the output end of the ultrasonic oscillator 22, and is preferably 1.2-1.5 times the diameter of the output end, so as to provide sufficient insertion space and accommodate the sealing ring. The depth of the through hole 2111 is determined according to the thicknesses of the outer shell 211 and the oscillation transmission layer 212, so as to ensure that the output end can be stably inserted and closely contact the oscillation transmission layer 212. The inner wall and edge of the through hole 2111 are precisely machined, such as polished, so as to reduce vibration attenuation caused by rough edges and at the same time protect the sealing ring from wear. The sealing ring is made of a material with good high-temperature resistance and vibration resistance, such as fluororubber, silicone rubber or polytetrafluoroethylene composite material, which can withstand an environmental temperature of up to 1000°C in the oxidation furnace 21 while maintaining good elasticity and air tightness. The sealing ring is embedded in the inner wall of the through hole 2111 and forms a circumferential contact with the output end of the ultrasonic oscillator 22.

[0038] In some embodiments, referring to Figure 3 and Figure 5 , the stirring mechanism 23 includes a motor 231, a stirring shaft 232 and a plurality of blades 233. The motor 231 is fixed to the bottom of the outer shell 211, the stirring shaft 232 is connected to the output end of the motor 231 and extends into the oxidation cavity, and the plurality of blades 233 are arranged around the circumference of the stirring shaft 232. The motor 231 is fixed to the bottom of the outer shell 211 of the oxidation furnace 21 by flange connection or bolt fixation. The output end of the motor 231 is connected to the stirring shaft 232 to provide rotary power. The stirring shaft 232 is made of a high-temperature-resistant and high-strength material, such as nickel-based alloy, to ensure long-term stable operation in a high-temperature environment. The diameter and length of the stirring shaft 232 are designed according to the size of the oxidation cavity, and the upper part thereof extends into the oxidation cavity and maintains a certain distance from the catalyst region to avoid hindering the arrangement of the catalyst layer. The blades 233 are installed on the middle and upper parts of the stirring shaft 232 and are uniformly arranged around the circumference of the stirring shaft 232. Each blade 233 is fixed on the stirring shaft 232 by bolt or welding. The motor 231 is controlled by a frequency converter, which can adjust the rotating speed of the stirring shaft 232 to adapt to the liquidity of different water samples and reaction requirements. The preferred rotating speed range is 10-50 rpm, which can ensure good mixing effect and avoid vortex or bubble disturbance caused by too fast stirring. The stirring shaft 232 and the blades 233 are made of a high-temperature-resistant and corrosion-resistant material (such as nickel-based alloy or ceramic composite material), which can withstand an environmental temperature of up to 1000°C in the oxidation cavity.

[0039] Further, the plurality of blades 233 are spirally arranged along the axial direction of the stirring shaft 232.

[0040] Further, the blades 233 are helical and a plurality of flow holes are formed in the blades 233.

[0041] The blades 233 are uniformly arranged at a certain interval in the axial direction of the stirring shaft 232, a fixed inclination angle is formed between each group of blades 233, the direction of the inclination of the blades 233 is always consistent with the flow direction of the water sample, and the blades 233 can guide the water sample to generate an axial flow effect when rotating. The helical angle is preferably 15°-45°, so as to balance the mixing effect and flowability of the water sample. The cross section of the blade 233 is designed to be curved, similar to the wing structure of an airplane, which can reduce the resistance of the water sample in the flow process and improve the fluid guiding efficiency. The helical arrangement structure of the blade 233 forms an axial flow trend in the rotating process through the design of the inclination angle, avoids the limitation that the water sample only rotates around the stirring shaft 232 in the traditional stirring mechanism 23, and significantly improves the flowability and reaction uniformity of the water sample. The wing structure design reduces the flow resistance when the blade 233 contacts the water sample, reduces the stirring power consumption, and forms a more efficient flow effect, so as to ensure smooth flow of the water sample in the oxidation cavity.

[0042] On the basis of the helical arrangement, a plurality of flow holes are formed in the blades 233 to further optimize the flowability and mixing efficiency of the water sample. A plurality of flow holes are uniformly formed in each blade 233, the diameter of the holes is preferably 5-15 mm, and the interval between the holes is 10-30 mm, so as to ensure that the fluid can smoothly pass through the blade 233 while maintaining good mixing effect. The flow holes are arranged in an array, and the distribution mode can be a rectangular array or a ring array. The rectangular array is suitable for planar blades 233, and the ring array is suitable for curved wing-shaped blades 233. The flow holes allow part of the water sample to flow through the blades 233, rather than completely bypassing the surface of the blades 233, thereby significantly reducing the resistance of the blades 233 to the fluid. The existence of the flow holes increases the degree of turbulence of the fluid, which helps to enhance the mixing effect of the water sample and make the reaction in the oxidation cavity more uniform.

[0043] In summary, the specific working process of the present application is as follows:

[0044] The water sample is introduced into the device from the environment to be measured (such as natural water or industrial discharge water) through the water sample collection pipeline 1. After entering the water sample collection pipeline 1, the water sample will undergo a preliminary degassing process to remove dissolved oxygen and other interfering gases. During the flow process in the water sample collection pipeline 1, the water sample will pass through a filter to remove suspended particles. After preliminary degassing and filtration, the water sample enters the oxidation furnace 21, and the reaction cavity of the oxidation furnace 21 is composed of a high-temperature oxidation layer 213, a shock transmission layer 212, and a catalyst. In the oxidation furnace 21, the organic matter in the water sample reacts with the catalyst under high-temperature conditions (680-1000°C) to convert into carbon dioxide. The ultrasonic oscillator 22 excites the turbulent flow on the surface of the catalyst through high-frequency vibration, enhancing the contact efficiency of the water sample and the catalyst. The vibration also removes the reaction residues covering the surface of the catalyst, ensuring the activity of the catalyst. The spiral blades 233 and overflow holes of the stirring mechanism 23 guide the water sample to flow along the axial direction while forming uniform turbulent flow, preventing local stagnation or poor flow of the water sample, and further improving the oxidation efficiency. Through the synergistic effect of the catalyst, high-temperature oxidation, and ultrasonic oscillation, all organic matter in the water sample is completely oxidized into carbon dioxide, ensuring the completeness and accuracy of the reaction. The carbon dioxide produced by the oxidation reaction is transmitted to the detection assembly 3 through the gas pipeline, enters the gas condenser to remove water vapor and impurities, and ensures the accuracy of the detection results. The gas detection assembly 3 uses a non-dispersive infrared detector to detect the concentration of carbon dioxide through the absorption of specific wavelengths of infrared light. The detected carbon dioxide concentration data is processed by the microprocessor built into the device, and the total organic carbon content in the water sample is calculated based on the water sample volume and the molecular weight of carbon dioxide. Since the formula for calculating the total organic carbon content using carbon dioxide is an existing formula, it will not be described here.

[0045] The foregoing detailed description has set forth various embodiments of the application via the use of a number of particular nouns, terms, and / or designations. It is to be understood that the use of such terms is solely for the purpose of providing a clear and consistent readably, and each and every occurrence of such terms in the description or claims is to be interpreted as controlling by the definitions provided herein. It is to be understood that the above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reading and understanding the above description. Although the application has been described with reference to particular means, materials and embodiments, from the foregoing disclosure and description, one skilled in the art can effect modifications. Changes in form and detail can be made without departing from the spirit, and the general principles or scope of aspect. Furthermore, notwithstanding that the numerical ranges and parameters setting forth the broad scope of aspect are approximations, the numerical values set forth in the specific example are reported as precisely as possible. Any numerical value, however, can contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

[0046] Also, the use of "a" or "an" or "the" are each intended to mean "one or more" when used in the context of describing elements of the application. Moreover, the use of the term "about" is intended to allow for variations, such as due to natural variations in manufacturing or variations due to the inherent inexactness found in measuring or testing procedures. Further, the use of the term "at least one" is intended to mean one or more unless specifically called out to the contrary. The preceding description is meant to be taken only by way of example and not to indicate the limits of the scope of the application.

[0047] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0048] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the total organic carbon content in a water sample, characterized in that, The utility model relates to a water quality detection device, which comprises: a water sample collection pipeline for collecting a water sample to be detected; an oxidation assembly in communication with the water sample collection pipeline for the water sample to be detected to perform an oxidation reaction; a detection assembly in communication with one end of the oxidation assembly away from the water sample collection pipeline; wherein the oxidation assembly comprises an oxidation furnace, an ultrasonic oscillator and a stirring mechanism, the input end of the oxidation furnace is in communication with the water sample collection pipeline, the output end is in communication with the detection assembly, the ultrasonic oscillator is arranged on the surface of the oxidation furnace, the oscillation generated by the ultrasonic oscillator can be transmitted to the inside of the oxidation furnace to form oscillation for the water sample to be detected in the oxidation furnace, and the stirring mechanism is arranged at the bottom of the oxidation furnace, and the stirring end of the stirring mechanism is arranged in the oxidation furnace.

2. The apparatus for detecting the content of total organic carbon in a water sample according to claim 1, characterized in that, The oxidation furnace comprises an outer shell, an oscillation transmission layer and an oxidation layer arranged in sequence from the outside to the inside, the ultrasonic oscillator is coupled to the oscillation transmission layer, and the oxidation layer defines an oxidation cavity in which the water sample to be detected is located.

3. The apparatus for detecting the content of total organic carbon in a water sample according to claim 2, characterized in that, The oxidation layer comprises at least one oxidizing agent attached to the oscillation transmission layer.

4. The apparatus for detecting the content of total organic carbon in a water sample according to claim 2, characterized in that, The ultrasonic oscillator is fixed to the surface of the outer shell, and the output end of the ultrasonic oscillator extends into the outer shell and is in contact with the oscillation transmission layer.

5. The apparatus for detecting the content of total organic carbon in a water sample according to claim 4, characterized in that, A plurality of ultrasonic oscillators are arranged in an array along the surface of the outer shell.

6. The apparatus for detecting the content of total organic carbon in a water sample according to claim 5, characterized in that, The distance between adjacent ultrasonic oscillators is not less than the distance at which one ultrasonic oscillator can drive the oscillation transmission layer to vibrate.

7. The apparatus for detecting total organic carbon content in a water sample according to claim 4, wherein, The outer shell is provided with a through hole and exposes part of the oscillation transmission layer, the output end of the ultrasonic oscillator extends into the through hole, and an elastic sealing ring is arranged between the inner wall of the through hole and the ultrasonic oscillator.

8. The apparatus for detecting total organic carbon content in a water sample according to claim 2, wherein, The stirring mechanism comprises a motor, a stirring shaft and a plurality of blades, the motor is fixed to the bottom of the outer shell, the stirring shaft is connected to the output end of the motor and extends into the oxidation cavity, and a plurality of blades are arranged around the circumference of the stirring shaft.

9. The apparatus for detecting the content of total organic carbon in a water sample according to claim 8, characterized in that, A plurality of blades are arranged in a spiral along the axial direction of the stirring shaft.

10. The apparatus for detecting total organic carbon content in a water sample of claim 8, wherein, The blades are in a spiral shape and a plurality of flow holes are arranged on the blades.

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