A power plant condensate regeneration resin conveying automatic identification device and identification system

Abstract

The utility model relates to a kind of power plant condensate regeneration resin conveying automatic identification device, and four sides of the fixed module setting is set on conveying pipeline, comprising: light source, resin conveying window, receiving device and acquisition module;Light source is set at the side of resin conveying window, for sending the transmission light of specific wavelength to resin conveying window;Receiving device is set at the other side of resin conveying window opposite with the side of light source setting, for receiving the optical signal formed after transmission light and resin interact after passing through resin conveying window, and optical signal is converted into electric signal after processing to optical signal;Acquisition module includes analog-digital conversion unit and signal transmission unit, and analog-digital conversion unit is used to collect current signal and is converted into digital signal;Signal transmission unit is used to transmit digital signal to digital signal analysis circuit;Four fixed modules are set around resin conveying window and install equidistantly with the four sides of resin conveying window. Corresponding system is also disclosed.

Description

Technical Field

[0001] This utility model relates to the fields of operation and maintenance of thermal power plant equipment, automation control, and industrial material conveying monitoring technology, and in particular to an automatic identification system for conveying condensate regeneration resin in thermal power plants. Background Technology

[0002] The condensate regeneration system in thermal power plants plays a crucial role in ensuring water quality and maintaining the efficient and stable operation of the units. Resin plays an even more critical role in the water purification process. Accurately monitoring the resin delivery status and completion during the resin regeneration process in thermal power plants is essential. Currently, traditional resin delivery monitoring methods in thermal power plant condensate regeneration rely on manual labor, which is prone to subjective errors, high labor costs, high labor intensity, low efficiency, and errors due to human negligence, such as misidentifying the resin type. These errors can lead to abnormal water treatment and affect the safe operation of the units, failing to meet the requirements of modern industry.

[0003] In addition, existing recognition technologies have the following limitations:

[0004] Existing technologies for material identification, such as simple liquid level difference identification, cannot accurately determine the state of resin. Traditional optical identification is easily affected by water vapor and impurities in pipelines, and cannot meet the high precision and high reliability requirements for resin transportation identification under the complex operating conditions of thermal power plants.

[0005] In summary, the existing technology has the following technical defects:

[0006] (1) Detection accuracy problem: Some automatic identification systems based on simple photoelectric detection or pressure detection are easily affected by factors such as ambient light, temperature, and pressure fluctuations, resulting in low detection accuracy and inability to accurately identify minute changes in resin or subtle differences during the transportation process.

[0007] (2) Insufficient adaptability: Different types of resins have different physicochemical properties, such as viscosity and transparency. Existing automatic identification systems are often designed for specific types of resins and have poor adaptability to other types of resins, making them difficult to be universally applicable in various resin delivery scenarios.

[0008] (3) Lack of intelligent analysis capabilities: Most traditional automatic identification systems can only perform simple threshold judgment and data collection, lacking the ability to deeply analyze and mine large amounts of data, and cannot obtain more valuable information from the data, such as optimizing transmission parameters.

[0009] Therefore, developing an efficient and reliable automatic identification system for resin delivery is of great practical significance. Utility Model Content

[0010] The purpose of this invention is to provide an automatic identification device and system for the conveying of condensate regeneration resin in thermal power plants. Through optical means, it can achieve high-precision monitoring and accurate judgment of the resin conveying process, effectively improving production efficiency and product quality, and has broad application prospects and promotional value.

[0011] The first aspect of this utility model provides an automatic identification device for conveying condensate regeneration resin in a thermal power plant. The device is mounted on a conveying pipeline (10) via fixed modules (8) arranged on four sides. The automatic identification device includes:

[0012] The system comprises a light source (7), a resin delivery window (12), a receiving device (3), and a data acquisition module (1); among which,

[0013] The light source (7) is disposed on one side of the resin delivery window (12) and is used to send transmitted light of a specific wavelength to the resin delivery window (12). The transmitted light of the specific wavelength has penetrability and stability.

[0014] The receiving device (3) is located on the opposite side of the resin delivery window (12) from the side where the light source (7) is located. It is used to receive the light signal formed after the transmitted light through the resin delivery window (12) interacts with the resin, and to process the light signal and convert it into an electrical signal. The receiving device (3) is a photodiode.

[0015] The acquisition module (1) includes an analog-to-digital conversion unit and a signal transmission unit. The analog-to-digital conversion unit is used to acquire the current signal based on high-precision analog-to-digital conversion technology and convert it into a digital signal. The signal transmission unit is used to transmit the digital signal to a digital signal analysis circuit that analyzes the digital signal.

[0016] The four fixing modules (8) are arranged around the resin delivery window (12) and are equidistant from the four sides of the resin delivery window (12).

[0017] Preferably, the four fixing modules (8) are respectively provided with bolt holes corresponding to their positions, and the fixing modules (8) are fixedly connected by bolts (5) passing through the bolt holes.

[0018] Preferably, the conveying pipe (10) is provided with two parallel flanges (6), the lower edge of the upper flange (6) is flush with the upper edge of the resin conveying window (12), and the upper edge of the lower flange (6) is flush with the lower edge of the resin conveying window (12).

[0019] Preferably, the acquisition module (1) is welded or snapped onto the wall of the conveying pipe (10) above the upper flange (6).

[0020] Preferably, a filter (4) is provided between the light source (7) and the resin delivery window. The filter (4) is attached to the outer or inner wall of the resin delivery window (12), or to the side wall on the side of the light source (7) that emits light, in order to filter out all visible light interference factors in the transmitted light emitted by the light source (7).

[0021] Preferably, the light source (7) is an 808nm infrared emission light source.

[0022] Preferably, the resin delivery window (12) is a single-layer window or a multi-layer window. The number of layers in the multi-layer window can be adjusted according to the resin properties and the amount of resin, thereby adjusting the window penetration thickness of the transmitted light.

[0023] Preferably, an amplification module (2) is fixedly attached to the outer wall of the acquisition module (1) by four screws. One or more wire connectors (11) are provided below the amplification module (2). The wire connectors (11) are connected to the receiving device (3) and are used to amplify the electrical signal.

[0024] Preferably, the control module is equipped with a light source current potentiometer, which is connected to the light source (7) and is used to adjust the light source current of the light source (7) in real time.

[0025] The second aspect of this utility model provides an automatic identification system for conveying condensate regeneration resin in thermal power plants, comprising:

[0026] The device is equipped with an automatic identification device as described in the first aspect, and further includes a control module and a host computer. The control module is connected to the acquisition module and determines the corresponding control command based on the digital processing and analysis of the digital signal sent by the acquisition module and transmits the digital signal processed and analyzed to the host computer.

[0027] The host computer is connected to the control module. The host computer is equipped with an identification device, which has an identification threshold valve installed inside. The opening degree of the identification threshold valve is used to determine whether the resin delivery is complete. The host computer is equipped with a threshold adjustment unit, which has a clamp on it. The clamp is connected to the identification threshold valve. The identification threshold is adjusted by adjusting the position of the clamp on the identification threshold valve.

[0028] The automatic identification device and system for conveying recycled condensate resin in thermal power plants of this utility model have the following beneficial effects:

[0029] (1) Precise detection: Using a specific wavelength of 808nm infrared light, combined with a filter to eliminate visible light interference, a purer light signal related to resin delivery is obtained. Compared with the traditional method, the detection accuracy is significantly improved and the impact of environmental factors on the detection results is reduced.

[0030] (2) Dynamic adaptive adjustment: It can perform window testing and adjust the recognition threshold according to different on-site environments (such as window material, thickness, ambient light, etc.). At the same time, it can flexibly adjust the voltage by adjusting the current potentiometer and the amplification factor, so that the system can adapt to different working conditions and ensure detection accuracy and stability.

[0031] (3) Data-driven monitoring and intelligent judgment: By generating voltage / time measurement curves, the completion status of resin delivery is automatically determined based on the curve characteristics and the set recognition threshold, realizing digital monitoring and intelligent judgment of the resin delivery process, and getting rid of the subjectivity and ambiguity of traditional monitoring.

[0032] (4) Reduce operation and maintenance costs: Automated identification reduces manual intervention, lowers labor costs, optimizes the conveying process, improves resource utilization, and reduces resin waste and equipment wear. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 A three-dimensional structural schematic diagram of the automatic identification device for conveying condensate regeneration resin in thermal power plants provided in an embodiment of this utility model.

[0035] Figure 2 (a)- Figure 2 (c) is a front view, a side view and a rear view of the automatic identification device for conveying condensate regeneration resin in thermal power plants provided in the embodiments of this utility model. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 element 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," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] See Figure 1 and Figure 2 (a)- Figure 2 (c) This embodiment provides an automatic identification device for conveying condensate regeneration resin in a thermal power plant. The device is mounted on the conveying pipeline 10 via four fixed modules 8 arranged on four sides. The automatic identification device includes:

[0040] Light source 7, resin delivery window 12, receiving device 3, and acquisition module 1; wherein,

[0041] The light source 7 is disposed on one side of the resin delivery window 12 and is used to send transmitted light of a specific wavelength to the resin delivery window 12. The transmitted light of the specific wavelength has penetrability and stability.

[0042] The receiving device 3 is disposed on the opposite side of the resin delivery window 12 to the side where the light source 7 is disposed. It is used to receive the light signal formed after the transmitted light passing through the resin delivery window 12 interacts with the resin, and to process the light signal and convert it into an electrical signal. The electrical signal appears in the form of current.

[0043] The acquisition module 1 includes an analog-to-digital conversion unit and a signal transmission unit. The analog-to-digital conversion unit is used to acquire the current signal based on high-precision analog-to-digital conversion technology and convert it into a digital signal. The signal transmission unit is used to transmit the digital signal to a digital signal analysis circuit that analyzes the digital signal.

[0044] The four fixing modules 8 are arranged around the resin delivery window 12 and are installed equidistantly from the four sides of the resin delivery window 12.

[0045] In a preferred embodiment, the four fixing modules 8 are respectively provided with bolt holes corresponding to their positions, and the fixing modules 8 are fixedly connected by bolts 5 passing through the bolt holes.

[0046] In a preferred embodiment, the conveying pipe 10 is provided with two parallel flanges 6, the lower edge of the upper flange 6 is flush with the upper edge of the resin conveying window 12, and the upper edge of the lower flange 6 is flush with the lower edge of the resin conveying window 12, thereby simultaneously defining the area of ​​the resin conveying window 12 and the installation area of ​​the automatic identification device.

[0047] In a preferred embodiment, the acquisition module 1 is welded or snapped onto the wall of the conveying pipe 10 above the upper flange 6.

[0048] In a preferred embodiment, the receiving device 3 is a photodiode, which processes the optical signal and converts the optical signal into an electrical signal using the photoelectric effect.

[0049] In a preferred embodiment, a filter 4 is disposed between the light source 7 and the resin delivery window. The filter 4 is attached to the outer or inner wall of the resin delivery window 12, or to the side wall on the side of the light source 7 that emits light, and is used to filter out all visible light interference factors in the transmitted light emitted by the light source 7. In this embodiment, only infrared light of a specific wavelength is allowed to pass through, thereby providing a pure light signal for subsequent signal processing.

[0050] In a preferred embodiment, the light source 7 is an 808nm infrared emission light source.

[0051] In a preferred embodiment, the resin delivery window 12 is a single-layer window or a multi-layer window. The number of layers in the multi-layer window can be adjusted according to the resin properties and the amount of resin, thereby adjusting the window penetration thickness of the transmitted light.

[0052] In a preferred embodiment, an amplification module 2 is fixedly attached to the outer wall of the acquisition module 1 by four screws. One or more wire connectors 11 are disposed below the amplification module 2, and these connectors 11 are connected to the receiving device 3 for amplifying the electrical signal. Since the initial electrical signal is usually weak and difficult to analyze and process effectively directly, the current-form electrical signal is amplified by the amplification module 2, facilitating effective analysis and processing of the signal.

[0053] In a preferred embodiment, the amplification module 2 is a high-performance amplification circuit used to amplify weak current signals and convert them into voltage signals for subsequent acquisition and processing.

[0054] Detection principle:

[0055] This invention employs an 808nm infrared emission light source. This specific wavelength of infrared light has excellent penetration and stability, effectively passing through the resin delivery window. As the light passes through the window, it interacts with the resin, and the transmitted light carries information related to resin delivery. To ensure detection accuracy, the transmitted light passes through a filter that eliminates all visible light interference, allowing only the specific wavelength of infrared light to pass through, thus providing a pure optical signal for subsequent signal processing.

[0056] In a preferred embodiment, the automatic identification device further includes a voltage adjustment unit disposed inside the amplification module 2. This voltage adjustment unit adjusts the amplification factor of the converted voltage signal, thereby forming a secondary amplification effect of the voltage signal corresponding to the primary amplification effect of the current signal. In this embodiment, adjusting different amplification factors can adjust the voltage of the measurement stage before measurement to a suitable voltage of the measurement stage after measurement. Through actual testing and optimization, an amplification factor of approximately 200 times can meet the detection requirements in most cases.

[0057] In a preferred embodiment, the control module includes a light source current potentiometer (not shown in the figure), which is connected to the light source 7 and used to adjust the magnitude of the light source current in real time. In this embodiment, the control module includes a light source current potentiometer, which allows for real-time adjustment of the light source current. Since changes in the light source current affect the emission intensity of infrared light, this in turn affects the intensity of the light signal received by the photodiode, ultimately affecting the magnitude of the voltage signal.

[0058] Therefore, this utility model has a flexible voltage regulation mechanism (the voltage regulation unit and the light source current potentiometer system) that adjusts the voltage magnitude by adjusting the voltage signal amplification factor of the light source current potentiometer and the voltage regulation unit.

[0059] The second aspect of this utility model provides an automatic identification system for conveying condensate regeneration resin in thermal power plants, comprising:

[0060] The device is equipped with an automatic identification device as described in the first aspect, and further includes a control module and a host computer. The control module is connected to the acquisition module and determines the corresponding control command based on the digital processing and analysis of the digital signal sent by the acquisition module and transmits the digital signal processed and analyzed to the host computer.

[0061] The host computer is connected to the control module. The host computer is equipped with an identification device. The identification device has an identification threshold valve installed inside. The opening degree of the identification threshold valve determines whether the resin delivery is complete.

[0062] Specifically, in this embodiment, the identification device generates a voltage / time measurement curve based on the digital signal sent by the acquisition module. When no resin passes through the window, i.e., when the window is completely transparent, the voltage value is approximately 2000mV, and the opening of the identification threshold valve is at its maximum. As resin begins to pass through the window, light is absorbed and scattered by the resin, weakening the intensity of transmitted light. This results in a weaker light signal received by the photodiode, and the converted voltage value continues to decrease until the resin flow rate reaches its maximum. At this point, the voltage value reaches a minimum, and the opening of the identification threshold valve is at its minimum. Subsequently, as the resin flow rate decreases, the intensity of transmitted light gradually increases, and the voltage begins to rise again. The opening of the identification threshold valve gradually increases from its minimum. After multiple field tests, based on the opening of the identification threshold valve, it is determined that when the identification threshold voltage value is approximately 1100mV, the resin delivery is essentially complete, and the system automatically determines that the resin delivery is finished.

[0063] In a preferred embodiment, the host computer is equipped with a threshold adjustment unit, which has a clamp connected to the recognition threshold valve. By adjusting the position of the clamp on the recognition threshold valve, the recognition threshold can be adjusted based on the influence of different on-site environments (such as different window materials, thicknesses, and ambient light) on the detection results. In this embodiment, the automatic recognition device can perform window tests according to different on-site environments and adjust the recognition threshold accordingly to ensure detection accuracy.

[0064] Through the above description of the embodiments, those skilled in the art can clearly understand that the above embodiments can be implemented by software, or by using software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the above embodiments can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard drive, etc.), including several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this utility model.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic identification device for conveying recycled condensate resin in a thermal power plant, characterized in that, The automatic identification device is mounted on the conveying pipe (10) via fixed modules (8) arranged on four sides. The automatic identification device includes: The system comprises a light source (7), a resin delivery window (12), a receiving device (3), and a data acquisition module (1); among which, The light source (7) is disposed on one side of the resin delivery window (12) and is used to send transmitted light of a specific wavelength to the resin delivery window (12). The transmitted light of the specific wavelength has penetrability and stability. The receiving device (3) is located on the opposite side of the resin delivery window (12) from the side where the light source (7) is located. It is used to receive the light signal formed after the transmitted light through the resin delivery window (12) interacts with the resin, and to process the light signal and convert it into an electrical signal. The receiving device (3) is a photodiode. The acquisition module (1) includes an analog-to-digital conversion unit and a signal transmission unit. The analog-to-digital conversion unit is used to acquire current signals and convert them into digital signals based on high-precision analog-to-digital conversion technology. The signal transmission unit is used to transmit the digital signals to a digital signal analysis circuit that analyzes the digital signals. The four fixing modules (8) are arranged around the resin delivery window (12) and are equidistant from the four sides of the resin delivery window (12).

2. The automatic identification device for conveying condensate regeneration resin in a thermal power plant according to claim 1, characterized in that, The four fixing modules (8) are respectively provided with bolt holes corresponding to their positions, and the fixing modules (8) are fixedly connected by bolts (5) passing through the bolt holes.

3. The automatic identification device for conveying condensate regeneration resin in a thermal power plant according to claim 2, characterized in that, The conveying pipe (10) is provided with two parallel flanges (6), the lower edge of the upper flange (6) is flush with the upper edge of the resin conveying window (12), and the upper edge of the lower flange (6) is flush with the lower edge of the resin conveying window (12).

4. The automatic identification device for conveying condensate regeneration resin in a thermal power plant according to claim 3, characterized in that, The acquisition module (1) is welded or snapped onto the wall of the conveying pipe (10) above the upper flange (6).

5. The automatic identification device for conveying condensate regeneration resin in a thermal power plant according to claim 4, characterized in that, A filter (4) is provided between the light source (7) and the resin delivery window. The filter (4) is attached to the outer or inner wall of the resin delivery window (12) or to the side wall on the side of the light source (7) to filter out all visible light interference factors in the transmitted light emitted by the light source (7).

6. The automatic identification device for conveying condensate regeneration resin in a thermal power plant according to claim 5, characterized in that, The light source (7) is an 808nm infrared emission light source.

7. The automatic identification device for conveying condensate regeneration resin in a thermal power plant according to claim 6, characterized in that, The resin delivery window (12) is a single-layer window or a multi-layer window. The number of layers in the multi-layer window can be adjusted according to the resin properties and the amount of resin, thereby adjusting the window penetration thickness of the transmitted light.

8. The automatic identification device for conveying recycled condensate resin in a thermal power plant according to claim 7, characterized in that, An amplification module (2) is fixedly attached to the outer wall of the acquisition module (1) by four screws. One or more wire connectors (11) are provided below the amplification module (2). The wire connectors (11) are connected to the receiving device (3) and are used to amplify the electrical signal.

9. An automatic identification system for conveying recycled condensate resin in a thermal power plant, characterized in that, include: The automatic identification device as described in any one of claims 1-8 further includes a control module and a host computer. The control module is connected to the acquisition module and determines the corresponding control command based on the digital processing and analysis of the digital signal sent by the acquisition module and transmits the digital signal processed and analyzed to the host computer. The control module is equipped with a light source current potentiometer, which is connected to the light source (7) and is used to adjust the light source current of the light source (7) in real time. The host computer is connected to the control module. The host computer is equipped with an identification device, which has an identification threshold valve installed inside. The opening degree of the identification threshold valve is used to determine whether the resin delivery is complete. The host computer is equipped with a threshold adjustment unit, which has a clamp on it. The clamp is connected to the identification threshold valve. The identification threshold is adjusted by adjusting the position of the clamp on the identification threshold valve.

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