Boiler four-tube leakage monitoring device and method and boiler four-tube system

Abstract

The invention provides a boiler four-pipe leakage monitoring device and method and a boiler four-pipe system.The boiler four-pipe leakage monitoring device comprises a measuring pipeline, a pressure sensor and a controller, the measuring pipeline is used for being inserted into boiler four pipes, the pressure sensor is communicated with an inner cavity of the measuring pipeline, the pressure sensor is electrically connected with the controller, and the controller is electrically connected with the measuring pipeline. And the signal is transmitted to the controller. According to the boiler four-pipe leakage monitoring device, the pressure sensor is adopted to monitor the pressure of the measuring pipeline so as to judge whether the boiler four pipes leak or not, and compared with the prior art, the pressure sensor is slightly influenced by environmental noise and the like, so that the stability of the monitoring process can be effectively improved; and the probability of false alarm and missing alarm phenomena is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of boiler leakage monitoring, and particularly relates to a boiler four-tube leakage monitoring device. Background Art

[0002] Currently, the main boiler four-tube leakage monitoring equipment is an acoustic wave monitoring system. However, the signal transmitted by the acoustic wave monitoring system is a small voltage signal, which is easily affected by environmental interference, such as air flow, compressed air disturbance, soot blowing interference, etc., resulting in large monitoring errors and frequent false alarms and missed alarms.

[0003] Therefore, how to overcome the above technical defects is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a boiler four-tube leakage monitoring device, which can effectively improve the stability of the monitoring process and reduce the probability of false alarms and missed alarms.

[0005] Another object of the present invention is to provide a boiler four-tube leakage monitoring method.

[0006] Another object of the present invention is to provide a boiler four-tube system.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A boiler four-tube leakage monitoring device includes a measurement pipeline, a pressure sensor, and a controller. The measurement pipeline is used to be inserted into the boiler four tubes, and the pressure sensor is communicated with the inner cavity of the measurement pipeline;

[0009] The pressure sensor is electrically connected to the controller and is used to transmit a signal to the controller.

[0010] Optionally, the controller includes a storage module, a transmission module, a judgment module, and a display module;

[0011] The storage module is used to store a preset pressure value in the measurement pipeline;

[0012] The transmission module is used to transmit the signal;

[0013] The judgment module is used to compare the preset pressure value with the actual pressure value and judge whether the actual pressure value is within the range of the preset pressure value;

[0014] The display module is used to display the judgment result.

[0015] Optionally, it further includes an alarm, and the alarm is electrically connected to the controller.

[0016] Optionally, the pressure sensor is disposed at the end of the measurement pipeline.

[0017] Optionally, it further includes a purging pipeline and a gas source. One end of the purging pipeline is communicated with the measurement pipeline, and the other end is communicated with the gas source.

[0018] Optionally, a solenoid valve is further disposed in the purging pipeline, and the solenoid valve is electrically connected to the controller.

[0019] Optionally, it further includes a sleeve, and the sleeve is sleeved on the end of the measurement pipeline in contact with the four tubes of the boiler.

[0020] Optionally, the sleeve is made of ceramic material.

[0021] A method for monitoring leakage of four tubes of a boiler, which is applied to the boiler four-tube leakage monitoring device as described in any one of the above, includes:

[0022] S100: Monitor the actual pressure value in the inner cavity of the measurement pipeline and transmit the signal.

[0023] S200: Judge whether the actual pressure value is within the preset pressure value range. If so, continue to execute S100. If not, check whether the four tubes of the boiler are leaking.

[0024] A boiler four-tube system includes the boiler four-tube leakage monitoring device as described in any one of the above;

[0025] The boiler four-tube system has multiple pressure monitoring positions. There are multiple boiler four-tube leakage monitoring devices, and one such boiler four-tube leakage monitoring device is provided at each pressure monitoring position.

[0026] It can be seen from the above technical solutions that the pressure sensor monitors the actual pressure value of the measurement pipeline in real time and transmits the signal to the controller. After receiving the signal, the controller compares the actual pressure value with the preset pressure value to judge whether the actual pressure value is within the preset pressure value range. If the actual pressure value is within the preset pressure value range, continue the monitoring. If the actual pressure value is not within the preset pressure value range, it indicates that the four tubes of the boiler may leak, and the staff needs to check on site.

[0027] The boiler four-tube leakage monitoring device disclosed in the embodiments of the present invention monitors the pressure of the measurement pipeline by using a pressure sensor to judge whether the four tubes of the boiler leak. Compared with the prior art, since the pressure sensor is less affected by environmental noise and the like, it can effectively improve the stability of the monitoring process and reduce the probability of false alarms and missed alarms. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings.

[0029] Figure 1 It is a schematic structural diagram of a boiler four-tube leakage monitoring device disclosed in an embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 100 - Measurement pipeline, 200 - Pressure sensor, 300 - Purge pipeline, 400 - Sleeve, 500 - Boiler four tubes. Detailed implementation manners

[0032] In view of this, the purpose of the present invention is to provide a boiler four-tube leakage monitoring device, which can effectively improve the stability of the monitoring process and reduce the probability of false alarms and missed alarms.

[0033] Another purpose of the present invention is also to provide a boiler four-tube leakage monitoring method.

[0034] Another purpose of the present invention is also to provide a boiler four-tube system.

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0036] Please refer to Figure 1 , the boiler four-tube leakage monitoring device disclosed in the embodiment of the present invention includes a measurement pipeline 100, a pressure sensor 200 and a controller. The measurement pipeline 100 is used to be inserted into the boiler four tubes 500. The pressure sensor 200 is communicated with the inner cavity of the measurement pipeline 100. Among them, the pressure sensor 200 is electrically connected to the controller and is used to transmit signals to the controller.

[0037] The pressure sensor 200 monitors the actual pressure value of the measurement pipeline 100 in real time and transmits the signal to the controller. After receiving the signal, the controller compares the actual pressure value with the preset pressure value to judge whether the actual pressure value is within the range of the preset pressure value. If the actual pressure value is within the range of the preset pressure value, the monitoring continues. If the actual pressure value is not within the range of the preset pressure value, it indicates that the boiler four tubes 500 may leak, and the staff needs to check on site.

[0038] The boiler four-tube leakage monitoring device disclosed in the embodiments of the present invention monitors the pressure of the measurement pipeline 100 by using the pressure sensor 200 to determine whether there is leakage in the boiler four tubes 500. Compared with the prior art, since the pressure sensor 200 is less affected by environmental noise and the like, the stability of the monitoring process can be effectively improved, and the probability of false alarms and missed alarms can be reduced.

[0039] It should be noted that the boiler four tubes 500 disclosed in the embodiments of the present invention can be the four tubes of a natural circulation boiler, a forced circulation boiler, a once-through boiler, and a combined cycle boiler. The "four tubes" specifically refer to the water wall, superheater, reheater, and economizer.

[0040] It should be noted that the controller includes a storage module, a transmission module, a judgment module, and a display module. Specifically, the storage module is used to store the preset pressure value in the measurement pipeline 100; the transmission module is used to transmit signals; the judgment module is used to compare the preset pressure value with the actual pressure value and determine whether the actual pressure value is within the range of the preset pressure value; the display module is used to display the judgment result.

[0041] As a specific embodiment, the display module can be a display screen to display the judgment result of the controller for the staff to view.

[0042] As a further embodiment, the boiler four-tube leakage monitoring device disclosed in the embodiments of the present invention further includes an alarm, wherein the alarm is electrically connected to the controller. When the controller determines that the actual pressure value is not within the range of the preset pressure value, a signal can be transmitted to the alarm to prompt the staff through the alarm, so as to facilitate the staff to check in time whether there is leakage in the boiler four tubes 500.

[0043] The pressure sensor 200 disclosed in the embodiments of the present invention can be arranged on the measurement pipeline body or at the end of the measurement pipeline. The embodiments of the present invention do not limit its specific position.

[0044] For the convenience of installation, the pressure sensor 200 disclosed in the embodiments of the present invention is arranged at the end of the measurement pipeline 100.

[0045] Since during the operation of the boiler, combustion ash may enter the measurement pipeline 100 and cause blockage to the measurement pipeline 100, therefore, the boiler four-tube leakage monitoring device disclosed in the embodiments of the present invention further includes a purge pipeline 300 and a gas source. One end of the purge pipeline 300 is connected to the measurement pipeline 100, and the other end is connected to the gas source.

[0046] When the gas source is turned on, gas can enter the purge pipeline 300 to clean the purge pipeline 300, and the gas source can be turned off after the cleaning is completed.

[0047] To achieve automatic control, a solenoid valve is further provided in the purging pipeline 300 disclosed in the embodiments of the present invention. The solenoid valve is electrically connected to the controller, and the gas source is in a directly connected state. The on-off of the solenoid valve is controlled by the controller to realize whether the gas purges the purging pipeline 300 or not.

[0048] To reduce the heat transferred from the four boiler tubes 500 to the pressure sensor 200, the boiler four-tube leakage monitoring device disclosed in the embodiments of the present invention further includes a sleeve 400. The sleeve 400 is sleeved on the end of the measuring pipeline 100 in contact with the four boiler tubes 500.

[0049] With such a setting, not only can the direct friction between the measuring pipeline 100 and the four boiler tubes 500 be avoided, the service life of the measuring pipeline 100 can be improved, but also the heat transferred from the four boiler tubes 500 to the pressure sensor 200 can be greatly reduced, so that the ambient temperature where the pressure sensor 200 is located is within an acceptable range, avoiding damages such as component deformation and performance deterioration caused by high temperature. In addition, the service life of the pressure sensor 200 is improved, the replacement frequency is reduced, the maintenance cost is reduced, and the operation efficiency of the entire monitoring device is improved.

[0050] The embodiments of the present invention do not limit the specific material of the sleeve 400. The sleeve 400 can be ceramic, or a metal sleeve 400 wrapped with a high-performance heat insulation coating, etc.

[0051] As a preferred embodiment, the sleeve 400 disclosed in the embodiments of the present invention is made of ceramic material.

[0052] The embodiments of the present invention also disclose a method for monitoring the leakage of the four boiler tubes 500, including:

[0053] S100: Monitor the actual pressure value inside the measuring pipeline 100 and transmit the signal.

[0054] S200: Judge whether the actual pressure value is within the preset pressure value range. If so, continue to execute S100. If not, check whether the four boiler tubes are leaking.

[0055] The pressure sensor 200 monitors the actual pressure value of the measuring pipeline 100 in real time and transmits the signal to the controller. After receiving the signal, the controller compares the actual pressure value with the preset pressure value to judge whether the actual pressure value is within the preset pressure value range. If the actual pressure value is within the preset pressure value range, continue to monitor. If the actual pressure value is not within the preset pressure value range, it indicates that the four boiler tubes 500 may be leaking, and the staff needs to check on-site.

[0056] The boiler four-tube leakage monitoring method disclosed in the embodiments of the present invention monitors the pressure of the measurement pipeline 100 by using the pressure sensor 200 to determine whether the boiler four-tubes 500 are leaking. Compared with the prior art, since the pressure sensor 200 is less affected by environmental noise and the like, the stability of the monitoring process can be effectively improved, and the probability of false alarms and missed alarms can be reduced.

[0057] The embodiments of the present invention also disclose a boiler four-tube system, including the boiler four-tube leakage monitoring device disclosed in any one of the above embodiments.

[0058] Among them, the boiler four-tube system has multiple pressure monitoring positions, there are multiple boiler four-tube leakage monitoring devices, and each pressure monitoring position is provided with a boiler four-tube leakage monitoring device.

[0059] With such a setting, comprehensive monitoring of the boiler four-tube system can be achieved. When the alarms of one or several boiler four-tube leakage monitoring devices sound, the staff can check whether there is leakage at the corresponding position of the boiler four-tube system.

[0060] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0061] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A boiler four-tube leakage monitoring device, characterized in that: It includes a measuring pipeline, a pressure sensor and a controller, wherein the measuring pipeline is used to be inserted into the four tubes of the boiler, and the pressure sensor is communicated with the inner cavity of the measuring pipeline; The pressure sensor is electrically connected to the controller and is used to transmit a signal to the controller.

2. The boiler four-tube leakage monitoring device according to claim 1 is characterized in that: The controller includes a storage module, a transmission module, a judgment module and a display module; The storage module is used to store the preset pressure value in the measuring pipeline; The transmission module is used to transmit the signal; The judgment module is used to compare the preset pressure value and the actual pressure value, and judge whether the actual pressure value is within the preset pressure value range; The display module is used to display the judgment result.

3. The boiler four-tube leakage monitoring device according to claim 1 is characterized in that: It also includes an alarm, which is electrically connected to the controller.

4. The boiler four-tube leakage monitoring device according to claim 1 is characterized in that: The pressure sensor is arranged at the end of the measuring pipeline.

5. The boiler four-tube leakage monitoring device according to claim 1, characterized in that: It also includes a purge pipeline and a gas source, one end of the purge pipeline is connected to the measuring pipeline, and the other end is connected to the gas source.

6. The boiler four-tube leakage monitoring device according to claim 5, characterized in that: A solenoid valve is also provided in the purge pipeline, and the solenoid valve is electrically connected to the controller.

7. The boiler four-tube leakage monitoring device according to claim 1 is characterized in that: It also includes a sleeve, which is sleeved on the end of the measuring pipeline that contacts the four boiler tubes.

8. The boiler four-tube leakage monitoring device according to claim 7, characterized in that: The sleeve is made of ceramic material.

9. A boiler four-tube leakage monitoring method, applied to a boiler four-tube leakage monitoring device as claimed in any one of claims 1 to 8, characterized in that: include: S100: monitor the actual pressure value of the inner cavity of the measuring pipeline and transmit the signal; S200: Determine whether the actual pressure value is within the preset pressure value range. If so, continue to execute S100. If not, check whether the four boiler pipes are leaking.

10. A boiler four-tube system, characterized in that: Comprising a boiler four-tube leakage monitoring device as described in any one of claims 1 to 8; The boiler four-tube system has multiple pressure monitoring positions, and there are multiple boiler four-tube leakage monitoring devices, and each of the pressure monitoring positions is provided with a boiler four-tube leakage monitoring device.

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