A structure for accurately positioning a leakage direction of a titanium tube of a condenser

Abstract

The utility model belongs to condenser maintenance technical field especially is a kind of structure of accurate positioning condenser titanium pipe leakage orientation, including condenser body, titanium tube group, sensing detection unit and processor;Sensing detection unit includes ultrasonic flaw detector installed in the both ends of each titanium tube in titanium tube group;Processor includes intelligent data processing unit, wireless display positioning unit and multistage alarm unit.The utility model, by ultrasonic flaw detector emit high frequency sound wave into titanium tube and carry out detection, utilize the reflection, refraction or attenuation characteristics of defect to sound wave, judge the position and size of defect, realize defect detection, carry out analysis and storage to detection parameter, accurate positioning, and record historical leakage data, provide basis for titanium tube life assessment, local and remote display are combined, it is convenient for on-site and remote operation and maintenance personnel to respond quickly, shorten fault processing time, according to leakage degree triggers different grades alarm, realize resource reasonable allocation, avoid excessive response or response deficiency.

Description

Technical Field

[0001] This utility model relates to the field of condenser maintenance technology, specifically a structure for accurately locating the leak in a condenser titanium tube. Background Technology

[0002] The condenser is an important auxiliary device in a steam turbine generator set. Its main function is to condense the steam discharged from the turbine into water while establishing and maintaining a certain vacuum. Titanium tubes are widely used in condensers due to their excellent corrosion resistance and high strength. However, during long-term operation, titanium tubes may leak due to corrosion, vibration, wear, and other reasons, affecting the normal operation of the condenser and even causing the unit to shut down.

[0003] Currently, common methods for locating leaks in condenser titanium tubes include helium mass spectrometry and hydrostatic testing. However, these methods suffer from low efficiency, poor accuracy, and complex operation, making it difficult to meet the need for rapid and accurate leak location. Furthermore, they cannot achieve online detection during operation, requiring shutdown for maintenance and impacting unit utilization. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a structure for accurately locating leaks in condenser titanium tubes, solving the problems of low positioning efficiency, poor accuracy, complex operation, inability to achieve online detection during operation, requiring shutdown for maintenance, and affecting unit utilization.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A structure for accurately locating the leak in a condenser titanium tube includes a condenser body and a titanium tube assembly disposed within the condenser body, and also includes a sensing and detection unit and a processor.

[0009] The sensing and detection unit includes multiple ultrasonic flaw detectors, which are installed at both ends of each titanium tube in the titanium tube group. By emitting high-frequency sound waves into the titanium tube material, the location and size of the defects are determined by utilizing the reflection, refraction or attenuation characteristics of the sound waves by the defects. As a thin-walled metal tube, the titanium tube has uniform material and stable acoustic impedance, which makes it convenient to use ultrasonic flaw detectors to detect titanium tube damage when the condenser is running continuously.

[0010] The processor includes an intelligent data processing unit, a wireless display and positioning unit, and a multi-level alarm unit. The intelligent data processing unit is communicatively connected to the ultrasonic flaw detector and the wireless display and positioning unit, respectively, and is used to receive and analyze data signals from multiple ultrasonic flaw detectors, accurately determine the location of the leak, realize local and remote synchronous display of leak information and location, and issue graded alarm signals according to the degree of leak.

[0011] Furthermore, the ultrasonic flaw detector is housed in a fixed sleeve. The ultrasonic flaw detector's probe contacts the outer wall of the titanium tube. The probe is the core component for converting electrical signals into ultrasonic signals. Its front working surface directly contacts the surface of the workpiece being inspected. To reduce the attenuation of ultrasonic waves in the air layer, a coupling agent is applied to the contact surface between the probe and the titanium tube to ensure that ultrasonic waves can be effectively transmitted to the titanium tube under inspection, thus achieving defect detection. The fixed sleeve is fixedly connected to the connecting sleeve, which is fitted onto the end of the titanium tube, facilitating the stable installation of the ultrasonic flaw detector at the end of each titanium tube, thereby enabling the detection of leaking components in the titanium tube.

[0012] Furthermore, the intelligent data processing unit of the processor includes a signal receiving module, a signal analysis module, a location determination module, and a data storage module;

[0013] The signal receiving module is communicatively connected to the ultrasonic flaw detector and is used to receive the detection signal data of the titanium tube;

[0014] The signal analysis module communicates with the signal receiving module. By comparing the parameter thresholds under normal operating conditions and combining the coordinated change law of the parameters, the misjudgment rate caused by parameter fluctuations is reduced.

[0015] The orientation determination module and data storage module are connected to the signal analysis module to locate the specific leaking titanium tube based on the analysis results and record historical data for easy traceability and analysis.

[0016] Furthermore, the processor's wireless display positioning unit includes a local display screen, a remote display terminal, and a wireless transmission module;

[0017] The wireless transmission module communicates with the intelligent data processing unit and uses the LoRa protocol to achieve low-power long-distance transmission.

[0018] The local display screen and the remote display terminal are connected to the wireless transmission module. The local display screen displays the leaking titanium pipe number, location, and parameter change curve in real time to achieve visual positioning. The remote display terminal allows maintenance personnel to view the information at the monitoring center.

[0019] Furthermore, the processor's multi-level alarm unit includes an audible and visual alarm module, an SMS alarm module, and an alarm level classification module;

[0020] The alarm level classification module is communicatively connected to the intelligent data processing unit;

[0021] The audible and visual alarm module and the SMS alarm module are respectively connected to the alarm level classification module.

[0022] Based on the degree of leakage, alarms are divided into three levels: minor leakage, moderate leakage, and severe leakage. Minor leakage only triggers local audible and visual alarms, moderate leakage simultaneously sends an SMS to the team leader, and severe leakage immediately notifies the operations and maintenance supervisor via SMS and enhances the intensity of audible and visual alarms, thus achieving a tiered response.

[0023] (III) Beneficial Effects

[0024] Compared with the prior art, this utility model provides a structure for accurately locating the leakage position of condenser titanium tubes, which has the following beneficial effects:

[0025] This invention utilizes an ultrasonic flaw detector to emit high-frequency sound waves into titanium pipes for inspection. By leveraging the reflection, refraction, or attenuation characteristics of sound waves caused by defects, the location and size of defects are determined, enabling defect detection. The detection parameters are analyzed and stored, allowing for precise location of leaks and recording of historical leakage data, providing a basis for titanium pipe lifespan assessment. The combination of local and remote display facilitates rapid response by on-site and remote maintenance personnel, shortening fault handling time. Different levels of alarms are triggered based on the degree of leakage, enabling rational resource allocation and avoiding over- or under-response. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a partial cross-sectional view of the parameter sensing and detection unit in this utility model;

[0028] Figure 3 This is a schematic diagram of the principle of this utility model.

[0029] In the figure: 1. Condenser body; 2. Titanium tube assembly; 3. Parameter sensing and detection unit; 301. Ultrasonic flaw detector; 302. Fixing sleeve; 303. Connecting sleeve; 4. Processor. Detailed Implementation

[0030] 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.

[0031] Example

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, one embodiment of this utility model proposes a structure for accurately locating the leakage location of a condenser titanium tube, including a condenser body 1 and a titanium tube assembly 2 disposed within the condenser body 1, and also includes a sensing detection unit 3 and a processor 4.

[0033] The sensing and detection unit 3 includes multiple ultrasonic flaw detectors 301. The ultrasonic flaw detectors 301 are installed at both ends of each titanium tube in the titanium tube group 2. By emitting high-frequency sound waves into the titanium tube material, the location and size of the defects are determined by utilizing the reflection, refraction or attenuation characteristics of the sound waves by the defects. As a thin-walled metal tube, the titanium tube has uniform material and stable acoustic impedance, which makes it convenient to use ultrasonic flaw detectors to detect titanium tube damage when the condenser is running without stopping.

[0034] The ultrasonic flaw detector 301 is housed in the fixed sleeve 302. The ultrasonic flaw detector 301 is pressed against the outer wall of the titanium tube by its probe. The probe is the core component for converting electrical signals and ultrasonic signals. Its front working surface is in direct contact with the surface of the workpiece being inspected. To reduce the attenuation of ultrasonic waves in the air layer, a coupling agent is applied to the contact surface between the probe and the titanium tube to ensure that the ultrasonic waves can be effectively transmitted to the titanium tube to be inspected and to achieve defect detection. The fixed sleeve 302 is fixedly connected to the connecting sleeve 303, which is fitted onto the end of the titanium tube. This facilitates the stable installation of the ultrasonic flaw detector 301 at the end of each titanium tube, thereby enabling the detection of leaking components in the titanium tube.

[0035] The processor 4 includes an intelligent data processing unit, a wireless display and positioning unit, and a multi-level alarm unit. The intelligent data processing unit is communicatively connected to the ultrasonic flaw detector 301 and the wireless display and positioning unit, respectively, and is used to receive and analyze the data signals of the multiple ultrasonic flaw detectors 301, accurately determine the location of the leak, realize local and remote synchronous display of leak information and location, and issue graded alarm signals according to the degree of leak.

[0036] The intelligent data processing unit of processor 4 includes a signal receiving module, a signal analysis module, a location determination module, and a data storage module.

[0037] The signal receiving module is connected to the ultrasonic flaw detector 301 to receive the detection signal data of the titanium tube. The signal receiving module 401 uses an STM32 series microcontroller to receive the 4-20mA analog signal from the flaw detector and convert it into a digital signal.

[0038] The signal analysis module communicates with the signal receiving module. By comparing the parameter thresholds under normal operating conditions and combining the coordinated change law of the parameters, the false judgment rate caused by parameter fluctuations is reduced. The signal analysis module pre-stores the parameters tested by the flaw detector under normal operating conditions for each titanium tube and sets the corresponding parameter thresholds. If the parameter change exceeds the threshold, it is judged as a leak.

[0039] The orientation determination module and data storage module are connected to the signal analysis module to locate the specific leaking titanium tube based on the analysis results. The data storage module uses an SD card to store the detection data for the past 6 months and records historical data for easy traceability and analysis.

[0040] The wireless display and positioning unit of the processor 4 includes a local display screen, a remote display terminal and a wireless transmission module. The local display screen is a 10-inch touch screen, the remote display terminal is a PC installed in the monitoring center, and the wireless transmission module is a LoRa module.

[0041] The wireless transmission module communicates with the intelligent data processing unit and uses the LoRa protocol to achieve low-power long-distance transmission.

[0042] The local display screen and the remote display terminal are connected to the wireless transmission module. The local display screen displays the leaking titanium pipe number, location, and parameter change curve in real time to achieve visual positioning. The remote display terminal allows maintenance personnel to view the information at the monitoring center.

[0043] The processor 4's multi-level alarm unit includes an audible and visual alarm module, an SMS alarm module, and an alarm level classification module;

[0044] The alarm level classification module communicates with the intelligent data processing unit and classifies the alarm levels according to the magnitude of parameter changes.

[0045] The audible and visual alarm module and the SMS alarm module are respectively connected to the alarm level classification module. The audible and visual alarm module uses a buzzer and a warning light, and the SMS alarm module sends information to a preset mobile phone number through the GSM module.

[0046] Based on the degree of leakage, alarms are divided into three levels: minor leakage, moderate leakage, and severe leakage. Minor leakage only triggers local audible and visual alarms, moderate leakage simultaneously sends an SMS to the team leader, and severe leakage immediately notifies the operations and maintenance supervisor via SMS and enhances the intensity of audible and visual alarms, thus achieving a tiered response.

[0047] The specific workflow is as follows:

[0048] When a leak occurs in the titanium tube of the condenser, the ultrasonic flaw detector 301 detects that the parameters of the titanium tube will change. The ultrasonic flaw detector 301 installed at both ends of the titanium tube can detect these changes in real time and transmit the detected signals to the intelligent data processing unit of the processor 4.

[0049] After the signal receiving module of the intelligent data processing unit receives the signal, the signal analysis module analyzes and processes the signal to determine the titanium tube that is leaking. The data storage module stores the received data and the processing results.

[0050] Then, the orientation determination module determines the specific location of the leaking titanium tube and transmits the relevant information to the wireless display positioning unit;

[0051] The local display screen of the wireless display positioning unit shows information about the leaking titanium tube and indicates the location of the leak;

[0052] At the same time, the data processing unit controls the multi-level alarm units to issue alarm signals.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for precisely locating the leak location of titanium tubes in a condenser, comprising a condenser body (1) and a titanium tube assembly (2) disposed within the condenser body (1), characterized in that: It also includes a sensing detection unit (3) and a processor (4); The sensing and detection unit (3) includes multiple ultrasonic flaw detectors (301), which are installed at both ends of each titanium tube in the titanium tube group (2). The processor (4) includes an intelligent data processing unit, a wireless display and positioning unit, and a multi-level alarm unit. The intelligent data processing unit is communicatively connected to the ultrasonic flaw detector (301) and the wireless display and positioning unit, respectively.

2. The structure for accurately locating the leak in a condenser titanium tube according to claim 1, characterized in that: The ultrasonic flaw detector (301) is placed in the fixed sleeve (302). The ultrasonic flaw detector (301) is pressed against the outer wall of the titanium tube through the probe. The fixed sleeve (302) is fixedly connected to the connecting sleeve (303). The connecting sleeve (303) is fitted onto the end of the titanium tube.

3. The structure for accurately locating the leak in a condenser titanium tube according to claim 1, characterized in that: The intelligent data processing unit of the processor (4) includes a signal receiving module, a signal analysis module, a azimuth determination module, and a data storage module; The signal receiving module is communicatively connected to the ultrasonic flaw detector (301). The signal analysis module and the signal receiving module are communicatively connected; The orientation determination module and the data storage module are respectively connected to the signal analysis module.

4. The structure for accurately locating the leak in a condenser titanium tube according to claim 1, characterized in that: The wireless display positioning unit of the processor (4) includes a local display screen, a remote display terminal and a wireless transmission module; The wireless transmission module is connected to the intelligent data processing unit for communication. The local display screen and the remote display terminal are respectively connected to the wireless transmission module.

5. The structure for accurately locating the leak in a condenser titanium tube according to claim 1, characterized in that: The processor (4) has a multi-level alarm unit including an audible and visual alarm module, an SMS alarm module, and an alarm level classification module; The alarm level classification module is communicatively connected to the intelligent data processing unit; The audible and visual alarm module and the SMS alarm module are respectively connected to the alarm level classification module.

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