Leakage monitoring probe structure and leakage monitoring system for low-low temperature economizer
By introducing conductive rods, insulating plates and vibrators into the leakage monitoring probe of low-temperature economizer, the problem of accelerated wear and lack of ash cleaning mechanism under the impact of flue gas is solved, and higher detection accuracy and durability are achieved.
Patent Information
- Application Number
- CN202411264494.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-03-11
AI Technical Summary
The existing leak monitoring probes for low-temperature economizers are susceptible to flue gas during the detection process, resulting in accelerated wear and corrosion, and lack of ash cleaning mechanism, which affects the accuracy of detection.
A leakage monitoring probe structure including a conductive rod, an insulating plate and a vibrator is designed. The conductive rod is used to detect medium leakage. The insulating plate ensures the insulating state of the conductive rod, and the vibrator cooperates with the connecting mechanism to prevent dust accumulation.
The conductive rod detects media leakage, the insulating plate improves detection accuracy, and the vibrator prevents dust accumulation, which significantly improves the durability and detection accuracy of the probe.
Smart Images
Figure CN119595198A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of leakage monitoring probes, and in particular to a leakage monitoring probe structure and a leakage monitoring system for a low-temperature economizer. Background Art
[0002] The heat loss of flue gas in thermal power plants is the largest among all the heat losses of power station boilers, generally 5%-8%. The flue gas temperature of boilers in current thermal power units is generally maintained at around 125-150℃. High flue gas temperature increases the flue gas volume, reduces the dust collection area of the electrostatic precipitator, increases the dust specific resistance, and reduces the efficiency of the electrostatic precipitator; for wet desulfurization systems, high flue gas temperature will lead to increased water consumption in the desulfurization system. Therefore, it is necessary to reduce the flue gas temperature before the electrostatic precipitator, improve the dust removal efficiency, reduce the water consumption of the desulfurization system, and reduce the coal consumption of the unit.
[0003] The existing leakage monitoring probe structure for low-temperature economizers will be impacted by flue gas during the detection process, increasing the wear and corrosion rate of the probe; secondly, the probe structure lacks a dust cleaning mechanism, which cannot prevent dust accumulation on the probe surface after long-term use, thereby affecting the accuracy of probe detection. Therefore, in response to the above problems, a leakage monitoring probe structure and leakage monitoring system for low-temperature economizers are proposed. Summary of the invention
[0004] The present invention provides a leakage monitoring probe structure and a leakage monitoring system for a low-temperature economizer, which are used to solve at least one of the problems raised by the above-mentioned background technology.
[0005] In order to solve the above technical problems, the present invention discloses a leakage monitoring probe structure for a low-temperature economizer, including a probe body, a conductive rod is embedded in one side of the probe body, an insulating plate is arranged around the conductive rod, a vibrator is arranged on the other side of the probe body, a connecting mechanism is installed on the side wall of the probe body, and a mounting mechanism is connected to the connecting mechanism.
[0006] Preferably, the probe body is made of a material that is wear-resistant, corrosion-resistant, and high-temperature resistant, such as stainless steel, titanium alloy, ceramic, and the like.
[0007] Preferably, the probe body adopts a streamlined design, and the surface of the probe body is coated or electroplated, such as a ceramic coating, a metal ceramic coating, etc.
[0008] Preferably, the connecting mechanism includes a mounting seat, an inner wall of the mounting seat is fixedly connected to the right end of the probe body through a spring, and a buffer gasket is embedded between an outer wall of one side of the probe body and the inner wall of the mounting seat, two hinge blocks are fixedly mounted on the upper and lower side walls of the probe body, and the tops of the two hinge blocks are embedded in the inner wall of the mounting seat.
[0009] Preferably, the mounting mechanism comprises a slide groove, the slide groove is embedded in the right side wall of the mounting seat, the forward and reverse driving motor is fixedly mounted on the top of the mounting seat through a fixing seat, and the output shaft of the forward and reverse driving motor is fixedly connected with a threaded rod with opposite rotation directions up and down, the lower end of the threaded rod is rotatably connected to the bottom of the mounting seat, and two sets of clamping components are symmetrically threadedly connected to the threaded rod up and down;
[0010] The clamping assembly on the upper side includes a driving rod, one side of the driving rod is threadedly connected to the threaded rod, and the other side of the driving rod is hinged with a clamping plate, one side of the clamping plate is slidably connected to the slide groove, the threaded rod passes through one side of the clamping plate, and a rubber pad is fixedly installed on the bottom of the clamping plate.
[0011] Preferably, a leakage monitoring system for a low-temperature economizer is based on the leakage monitoring probe structure for a low-temperature economizer as described in claims 1-5, and the leakage monitoring system comprises:
[0012] The monitoring device is used to monitor the leakage of the medium in real time through the monitoring probe installed on the low-temperature economizer;
[0013] Alarm device: based on the leakage signal detected by the monitoring device, the system will immediately trigger the alarm mechanism;
[0014] Data processing and analysis device, based on the system to process and analyze the monitored data to determine the severity and location of the leak, for storage and comparison of historical data, to facilitate trend analysis and fault diagnosis;
[0015] Remote monitoring and communication device, used to transmit the monitoring data of the monitoring device to the remote monitoring center or the mobile device of the manager in real time through the network;
[0016] Maintenance and calibration equipment, used to provide maintenance and calibration of the leak detection system.
[0017] Preferably, the monitoring probe in the monitoring device may also include auxiliary components such as sensors and signal amplifiers.
[0018] The leakage monitoring probe structure and leakage monitoring system for low-temperature economizer provided by the present invention have the following beneficial effects compared with the prior art:
[0019] 1. The leakage monitoring probe structure for the low-temperature economizer completes the monitoring by means of a conductive rod arranged in the probe body according to the change in electrical characteristics caused by medium leakage contact. The insulating plate arranged ensures that the conductive rod is insulated around it, thereby improving the accuracy of detection. Secondly, the vibrator cooperates with the connecting mechanism to effectively prevent problems such as dust accumulation on the probe. The installation mechanism enables the leakage monitoring probe to be installed in an appropriate position of the low-temperature economizer, which is convenient for installation and disassembly, and also convenient for maintenance and replacement.
[0020] 2. The above leakage monitoring system for low-temperature economizer is equipped with monitoring devices, alarm devices, data processing and analysis devices, remote monitoring and communication devices, and maintenance and calibration devices; first, it can monitor the working status of the low-temperature economizer in real time, and detect leakage in time and accurately alarm; second, it improves the accuracy and reliability of the alarm by integrating multiple monitoring means; third, some systems support online disassembly, assembly, cleaning and calibration of monitoring probes to ensure the sensitivity of the monitoring probes and the long-term stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of a structure of a leakage monitoring probe for a low-temperature economizer provided by an embodiment of the present invention;
[0023] Figure 2 A schematic structural diagram of a leakage monitoring system for a low-temperature economizer provided in an embodiment of the present invention.
[0024] Reference numerals:
[0025] 1. Probe body; 2. Conductive rod; 3. Insulating plate; 4. Vibrator; 5. Connecting mechanism; 6. Mounting mechanism; 7. Mounting seat; 8. Spring; 9. Buffer washer; 10. Articulated block; 11. Slide; 12. Forward and reverse drive motor; 13. Fixed seat; 14. Threaded rod; 15. Drive rod; 16. Clamp; 17. Rubber pad. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] The present invention provides the following embodiments
[0028] Example 1
[0029] The embodiment of the present invention provides a leakage monitoring probe structure for a low temperature economizer, such as Figure 1 As shown, it includes a probe body 1, a conductive rod 2 is embedded in one side of the probe body 1, an insulating plate 3 is arranged around the conductive rod 2, a vibrator 4 is arranged on the other side of the probe body 1, a connecting mechanism 5 is installed on the side wall of the probe body 1, and a mounting mechanism 6 is connected to the connecting mechanism 5.
[0030] Preferably, the probe body 1 is made of a material that is wear-resistant, corrosion-resistant, and high-temperature resistant, such as stainless steel, titanium alloy, ceramic, and the like.
[0031] Preferably, the probe body 1 adopts a streamlined design, and the surface of the probe body 1 is coated or electroplated, such as a ceramic coating, a metal ceramic coating, etc.
[0032] Preferably, the connecting mechanism 5 includes a mounting seat 7, the inner wall of the mounting seat 7 is fixedly connected to the right end of the probe body 1 through a spring 8, and a buffer gasket 9 is embedded between the outer wall of one side of the probe body 1 and the inner wall of the mounting seat 7, two hinge blocks 10 are fixedly mounted on the upper and lower side walls of the probe body 1, and the tops of the two hinge blocks 10 are embedded in the inner wall of the mounting seat 7.
[0033] Preferably, the mounting mechanism 6 includes a slide groove 11, which is embedded in the right side wall of the mounting seat 7, and the forward and reverse driving motor 12 is fixedly mounted on the top of the mounting seat 7 through a fixing seat 13, and the output shaft of the forward and reverse driving motor 12 is fixedly connected to a threaded rod 14 with opposite rotation directions up and down, and the lower end of the threaded rod 14 is rotatably connected to the bottom of the mounting seat 7, and two sets of clamping components are symmetrically threadedly connected to the threaded rod 14 up and down;
[0034] The clamping assembly on the upper side includes a driving rod 15, one side of which is threadedly connected to the threaded rod 14, and the other side of the driving rod 15 is hinged with a clamping plate 16, one side of which is slidably connected to the slide groove 11, the threaded rod 14 passes through one side of the clamping plate 16, and a rubber pad 17 is fixedly installed at the bottom of the clamping plate 16.
[0035] The working principle and beneficial effects of the above technical solution are:
[0036] The above-mentioned leakage monitoring probe structure for low-temperature economizer mainly consists of a probe body 1, a conductive rod 2, an insulating plate 3, a vibrator 4, a connecting mechanism 5 and a mounting mechanism 6. The conductive rod 2 is the core part of the monitoring probe. The conductive rod 2 is used to detect the leakage of a medium (such as water). When the medium contacts the conductive rod 2, it will cause changes in electrical properties, such as a decrease in resistance or the generation of current; the insulating plate 3 is located between or around the conductive rods 2, and is used to ensure that under normal circumstances, the conductive rods 2 and the conductive rods 2 are insulated from the external environment. The presence of the insulating plate 3 ensures the accuracy of leakage detection. The connecting mechanism 5 and the mounting mechanism 6 are used to firmly install the monitoring probe in an appropriate position of the low-temperature economizer. The mounting mechanism 6 is designed to be easy to install and disassemble so that it can be maintained and replaced when necessary. It also includes some other auxiliary components. The monitoring probe also includes auxiliary components such as sensors and signal amplifiers to improve the sensitivity and accuracy of detection.
[0037] At the same time, the material of the probe body 1 is selected from wear-resistant, corrosion-resistant, and high-temperature resistant materials, such as stainless steel, titanium alloy, ceramic, etc., which can significantly improve the durability of the probe body 1. The probe body 1 adopts a streamlined design, and the surface of the probe body 1 is coated or electroplated, such as ceramic coating, metal ceramic coating, etc., which can effectively reduce the direct impact of flue gas on the probe body 1, reduce the wear and corrosion rate, and adopt a streamlined design to allow flue gas to pass smoothly, reducing the impact on the probe body 1. The connecting mechanism 5 includes a mounting seat 7, the inner wall of the mounting seat 7 is fixedly connected to the right end of the probe body 1 through a spring 8, and a buffer gasket 9 is embedded between the outer wall of one side of the probe body 1 and the inner wall of the mounting seat 7, and two hinge blocks 10 are fixedly mounted on the upper and lower side walls of the probe body 1, and the tops of the two hinge blocks 10 are embedded on the inner wall of the mounting seat 7; when it is necessary to clean the surface of the probe body 1, the vibrator 4 is started to make the probe body 1 vibrate under the action of the spring 8, thereby realizing the cleaning of the surface of the probe body 1. The vibrator 4 causes the probe to vibrate during operation, shakes off the accumulated dust, and effectively avoids the influence of the accumulated dust on the accurate monitoring of the probe, thereby improving the accuracy and reliability of the monitoring of the leakage monitoring probe structure of the low-temperature economizer.
[0038] When the above-mentioned installation mechanism 6 needs to install and fix the leakage monitoring probe structure of the low-temperature economizer, it only needs to start the forward and reverse drive motor 12 to make the threaded rod 14 with opposite rotation directions fixedly installed on the output shaft of the forward and reverse drive motor 12 rotate, so that the two drive rods 15 threadedly connected to the threaded rod 14 are clamped inward (or loosened outward) at the same time, thereby driving the clamping plate 16 and the rubber pad 17 to fix the leakage monitoring probe structure of the low-temperature economizer at a suitable position of the low-temperature economizer, effectively improving the efficiency of installation and disassembly of the leakage monitoring probe structure of the low-temperature economizer, and facilitating maintenance and replacement.
[0039] Example 2
[0040] Based on Example 1, a leakage monitoring system for a low-temperature economizer is provided. Figure 2 As shown, based on the leakage monitoring probe structure for low-temperature economizer according to claims 1-5, the leakage monitoring system includes:
[0041] The monitoring device is used to monitor the leakage of the medium in real time through the monitoring probe installed on the low-temperature economizer; when leakage occurs, the system can quickly capture the corresponding signal changes;
[0042] Alarm device: based on the leakage signal detected by the monitoring device, the system will immediately trigger the alarm mechanism, which may include sound and light alarm, SMS notification, email reminder, etc.
[0043] Data processing and analysis device, based on the system to process and analyze the monitored data to determine the severity and location of the leak, used for storing and comparing historical data, to facilitate trend analysis and fault diagnosis. Historical data is the result of the system processing and analyzing the monitored data multiple times;
[0044] Remote monitoring and communication device, based on the remote monitoring and communication of the low-temperature economizer leakage monitoring system, is used to transmit the monitoring data to the remote monitoring center or the manager's mobile device in real time through the network, facilitating remote monitoring and real-time management;
[0045] Maintenance and calibration equipment is used to provide maintenance and calibration for the leakage monitoring system to ensure the sensitivity and accuracy of the monitoring probe, including regular cleaning, calibration and replacement of damaged parts.
[0046] Preferably, the monitoring probe in the monitoring device may also include auxiliary components such as sensors and signal amplifiers.
[0047] The working principle and beneficial effects of the above technical solution are:
[0048] In the above-mentioned leakage monitoring system for a low-temperature economizer, the monitoring device is used to monitor the leakage of the medium in real time through the monitoring probe installed on the low-temperature economizer. When a leakage occurs, the system can quickly capture the corresponding signal change; the alarm device is based on the leakage signal detected by the monitoring device, and the leakage monitoring system of the low-temperature economizer will immediately trigger the alarm mechanism to notify relevant personnel to handle it. At the same time, the alarm method may include various forms such as sound and light alarm, SMS notification, and email reminder; the data processing and analysis device processes and analyzes the monitored data based on the leakage monitoring system of the low-temperature economizer to determine the severity and location of the leakage. At the same time, the leakage monitoring system of the low-temperature economizer can also store and compare historical data for trend analysis and fault diagnosis; the remote monitoring and communication device is based on the remote monitoring and communication of the low-temperature economizer leakage monitoring system, and is used to transmit the monitoring data of the monitoring device to the remote monitoring center or the mobile device of the manager through the network in real time, so as to facilitate remote monitoring and real-time management; the maintenance and calibration device is used to provide maintenance and calibration for the leakage monitoring system to ensure the sensitivity and accuracy of the monitoring probe, including regular cleaning, calibration and replacement of damaged parts.
[0049] At the same time, the leakage monitoring system of the low-temperature economizer is mainly composed of the following parts: monitoring probes, including acoustic sensors, humidity monitors, differential pressure transmitters, flow meters and conductivity monitoring probes; data acquisition and processing units, responsible for receiving signals from monitoring probes, and performing data processing and analysis; alarm and display units, when leakage is detected, trigger the alarm mechanism, and give alarm information and related data on the display screen; control system, according to the alarm information and control logic, performs necessary control operations on the low-temperature economizer, such as isolating leakage points, adjusting operating parameters, etc.
[0050] The leakage monitoring system of the above-mentioned low-temperature economizer adopts the principle of conductivity monitoring, and utilizes a detachable monitoring probe including a conductive rod 2, an insulating plate 3 and a mounting mechanism 6. When water contacts the monitoring probe, the insulation between the two conductive rods 2 decreases and generates current. The current monitoring device transmits the current value to the host monitoring system and alarms; at the same time, the following detection principles can also be adopted: one is acoustic wave measurement. The online monitoring system for furnace tube leakage adopts acoustic wave measurement and signal processing technology. The sound signal in the furnace is collected by an acoustic wave sensor, and the signal is subjected to a fast Fourier transform (FFT) by a computer to obtain the frequency characteristics of the signal. Through a comprehensive analysis of factors such as sound intensity, spectrum characteristics and duration, it is determined whether the furnace tube is leaking, and the result is given on the computer display. When the signal reaches the set value, an alarm will be issued. The first is humidity monitoring. The flue gas humidity monitor generally has a temperature compensation function to make the measurement more accurate. When a low-temperature economizer leaks, the flue gas humidity value will change significantly. The detection value is obtained by installing a flue gas humidity monitor at the flue gas outlet of the low-temperature economizer. When the detection value reaches the set value, the system will alarm for a humidity mutation. The third is pressure and flow monitoring. The differential pressure transmitter and flow meter are also commonly used monitoring equipment. The differential pressure transmitter determines whether there is a leak by measuring the pressure difference between the inlet and outlet of the low-temperature economizer, while the flow meter determines whether there is a leak in the equipment by monitoring the flow difference between the inlet and outlet.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A leakage monitoring probe structure for a low-temperature economizer, characterized in that: The invention comprises a probe body (1), a conductive rod (2) is embedded in one side of the probe body (1), an insulating plate (3) is arranged around the conductive rod (2), a vibrator (4) is arranged on the other side of the probe body (1), a connecting mechanism (5) is installed on the side wall of the probe body (1), and a mounting mechanism (6) is connected to the connecting mechanism (5).
2. A leakage monitoring probe structure for a low-temperature economizer according to claim 1, characterized in that: The material of the probe body (1) is selected from materials that are wear-resistant, corrosion-resistant and high-temperature-resistant, such as stainless steel, titanium alloy, ceramics, etc.
3. The leakage monitoring probe structure for a low-temperature economizer according to claim 1 is characterized in that: The probe body (1) adopts a streamlined design, and the surface of the probe body (1) is coated or electroplated, such as a ceramic coating, a metal ceramic coating, etc.
4. The leakage monitoring probe structure for a low-temperature economizer according to claim 1 is characterized in that: The connecting mechanism (5) comprises a mounting seat (7), the inner wall of the mounting seat (7) is fixedly connected to the right side end of the probe body (1) via a spring (8), and a buffer washer (9) is embedded between an outer wall of one side of the probe body (1) and the inner wall of the mounting seat (7), and two hinge blocks (10) are fixedly mounted on the upper and lower side walls of the probe body (1), and the tops of the two hinge blocks (10) are embedded on the inner wall of the mounting seat (7).
5. A leakage monitoring probe structure for a low-temperature economizer according to claim 4, characterized in that: The mounting mechanism (6) comprises a slide groove (11), the slide groove (11) is embedded in the right side wall of the mounting seat (7), a forward and reverse driving motor (12) is fixedly mounted on the top of the mounting seat (7) through a fixing seat (13), and an output shaft of the forward and reverse driving motor (12) is fixedly connected to a threaded rod (14) with opposite rotation directions up and down, the lower end of the threaded rod (14) is rotatably connected to the bottom of the mounting seat (7), and two groups of clamping components are symmetrically threadedly connected to the threaded rod (14) up and down; The clamping assembly on the upper side includes a driving rod (15), one side of the driving rod (15) is threadedly connected to the threaded rod (14), and the other side of the driving rod (15) is hinged with a clamping plate (16), one side of the clamping plate (16) is slidably connected to the slide groove (11), the threaded rod (14) passes through one side of the clamping plate (16), and a rubber pad (17) is fixedly installed on the bottom of the clamping plate (16).
6. A leakage monitoring system for a low-temperature economizer, based on the leakage monitoring probe structure for a low-temperature economizer according to claims 1-5, the leakage monitoring system comprising: The monitoring device is used to monitor the leakage of the medium in real time through the monitoring probe installed on the low-temperature economizer; Alarm device: based on the leakage signal detected by the monitoring device, the system will immediately trigger the alarm mechanism; Data processing and analysis device, based on the system to process and analyze the monitored data to determine the severity and location of the leak, for storage and comparison of historical data, to facilitate trend analysis and fault diagnosis; Remote monitoring and communication device, used to transmit the monitoring data of the monitoring device to the remote monitoring center or the mobile device of the manager in real time through the network; Maintenance and calibration equipment, used to provide maintenance and calibration of the leak detection system.
7. A leakage monitoring system for a low-temperature economizer according to claim 6, characterized in that: The monitoring probe in the monitoring device also includes auxiliary components such as sensors and signal amplifiers.