An efficient and fast intelligent leakage detection system for flue

Abstract

The utility model discloses an efficient and fast intelligent leakage detection system for a flue, comprising a temperature measuring component and a PLC controller. The temperature measuring component comprises a smoke inlet pipe, a smoke return pipe, a connecting pipe and a temperature detection probe. The smoke inlet pipe and the smoke return pipe are arranged in a mirror image. The upper end and the lower end of the smoke inlet pipe are arranged as a horizontal pipe. The two horizontal pipes are connected by an inclined pipe arranged obliquely. The smoke inlet of the smoke inlet pipe and the smoke return of the smoke return pipe are both arranged in a flue body. The smoke outlet of the smoke inlet pipe and the smoke inlet of the smoke return pipe are both arranged outside the flue body. The smoke inlet of the smoke inlet pipe is arranged on the leeward side of a flue gas heat exchanger. One end of the connecting pipe is connected with the smoke outlet of the smoke inlet pipe, and the other end of the connecting pipe is connected with the smoke inlet of the smoke return pipe. The connecting pipe is connected with an assembly pipe. The temperature detection probe can be detachably installed in the assembly pipe. The temperature measuring end of the temperature detection probe extends into the connecting pipe. The temperature detection probe is electrically connected to a signal input end of the PLC controller through a wire.

Description

Technical Field

[0001] The utility model relates to the technical field of flue leakage detection, in particular to a high-efficiency and fast intelligent leakage detection system for flues. Background Art

[0002] The Chinese patent with the announcement number CN216925292U discloses a flue gas heat exchanger leakage detection device, which is composed of multiple flue gas leakage probes and a controller. Among them, a plurality of flue gas leakage probes are arranged in the flue on the leeward side of the flue gas heat exchanger, and the flue gas leakage probes are built with multiple temperature sensor probes; the controller is arranged outside the flue, connected to the temperature sensor, and processes the detected temperature signal. The above-mentioned flue gas heat exchanger leakage detection device can quickly and effectively detect the leakage of the flue gas heat exchanger by detecting the temperature of the flue gas at the tail end of the flue gas heat exchanger.

[0003] However, the above device has the following defects when actually used:

[0004] For example, when the temperature sensor probe is damaged and needs to be replaced, there is a risk of burns when replacing the temperature sensor probe because the flue gas temperature in the flue is high;

[0005] When replacing the temperature sensor probe, the smoke in the flue will leak from the installation port and pollute the environment.

[0006] Therefore, an efficient and rapid intelligent leakage detection system for flue is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a highly efficient and rapid intelligent leakage detection system for a flue, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] A high-efficiency and fast intelligent leakage detection system for a flue, comprising a temperature measuring component and a PLC controller, the temperature measuring component comprising a smoke inlet pipe, a smoke return pipe, a connecting pipe, and a temperature detection probe, the smoke inlet pipe and the smoke return pipe are arranged in a mirror image, the upper end and the lower end of the smoke inlet pipe are both arranged as a horizontal pipe, the two horizontal pipes are connected by an inclined pipe arranged obliquely, the smoke inlet of the smoke inlet pipe and the smoke return port of the smoke return pipe are both arranged in a flue body, the smoke outlet of the smoke inlet pipe and the smoke inlet of the smoke return pipe are both arranged outside the flue body, the smoke inlet of the smoke inlet pipe is arranged on the leeward side of a flue gas heat exchanger, one end of the connecting pipe is connected to the smoke outlet of the smoke inlet pipe, the other end of the connecting pipe is connected to the smoke inlet of the smoke return pipe, the connecting pipe is connected to an assembly pipe, the temperature detection probe can be detachably installed in the assembly pipe, the temperature measuring end of the temperature detection probe extends into the connecting pipe, and the temperature detection probe is electrically connected to the signal input end of the PLC controller through a wire.

[0010] In a high-efficiency and fast intelligent leakage detection system for a flue according to the utility model, the temperature measuring components are arranged in no less than five groups at equal intervals along the circumference of the flue body.

[0011] In an efficient and rapid intelligent leakage detection system for a flue according to the utility model, the outer wall of the smoke inlet pipe, the outer wall of the connecting pipe and the outer wall of the smoke return pipe are all wrapped with a heat insulation sleeve.

[0012] In an efficient and rapid intelligent leakage detection system for a flue according to the utility model, a smoke inlet valve is installed on the smoke inlet pipe, and a smoke return valve is installed on the smoke return pipe.

[0013] In an efficient and rapid intelligent leakage detection system for a flue according to the utility model, an inner wall of the assembly tube is provided with an internal thread, and the temperature detection probe is fixedly mounted on the assembly tube through the thread.

[0014] In a high-efficiency and fast intelligent leakage detection system for a flue according to the utility model, the inclination angles of the smoke inlet pipe and the smoke return pipe are between 120° and 150°.

[0015] The utility model has at least the following beneficial effects:

[0016] The utility model installs the temperature detection probe on the outside of the flue body, and cooperates with the arranged smoke inlet pipe, smoke return pipe and connecting pipe to guide the smoke in the flue body after heat exchange by the smoke heat exchanger into the connecting pipe, and then detects the temperature of the smoke after heat exchange through the temperature detection probe installed in the connecting pipe. When it is necessary to replace the temperature detection probe, the smoke inlet valve and the smoke return valve are closed, the damaged temperature detection probe can be removed, and a new temperature detection probe is installed in the assembly pipe, and then the smoke inlet valve and the smoke return valve are opened to continue the detection. The whole disassembly and assembly process will not cause burns to personnel and ash leakage to pollute the environment, and the normal operation of other temperature measuring components will not be affected during the replacement of the temperature detection probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the utility model for the efficient and rapid leakage intelligent detection system of the flue;

[0019] Figure 2 It is a cross-sectional structural diagram of the utility model for a high-efficiency and fast intelligent leakage detection system for a flue;

[0020] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0021] Figure 4 This is a circuit principle block diagram of the utility model.

[0022] Description of Figure Numbers:

[0023] 1. Flue body; 2. Smoke inlet pipe; 201. Smoke inlet valve; 3. Smoke return pipe; 301. Smoke return valve; 4. Connecting pipe; 5. Assembly pipe; 6. Temperature detection probe; 7. Wire; 8. Smoke heat exchanger; 9. PLC controller; 10. DCS control system. DETAILED DESCRIPTION

[0024] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Please refer to Figures 1 to 4As shown, this embodiment provides an efficient and fast intelligent leakage detection system for a flue, including a temperature measuring component and a PLC controller 9, the temperature measuring component includes a smoke inlet pipe 2, a smoke return pipe 3, a connecting pipe 4, and a temperature detection probe 6, the smoke inlet pipe 2 and the smoke return pipe 3 are arranged in a mirror image, the upper end and the lower end of the smoke inlet pipe 2 are both arranged as a horizontal pipe, and the two horizontal pipes are connected by an inclined pipe arranged obliquely, the smoke inlet of the smoke inlet pipe 2 and the smoke return of the smoke return pipe 3 are both arranged in the flue body 1, and the smoke outlet of the smoke inlet pipe 2 and the smoke inlet of the smoke return pipe 3 are both arranged on the flue body 1 On the outside, a smoke inlet valve 201 is installed on the smoke inlet pipe 2, and a smoke return valve 301 is installed on the smoke return pipe 3. The smoke inlet of the smoke inlet pipe 2 is arranged on the leeward side of the smoke heat exchanger 8. One end of the connecting pipe 4 is connected with the smoke outlet of the smoke inlet pipe 2, and the other end of the connecting pipe 4 is connected with the smoke inlet of the smoke return pipe 3. The connecting pipe 4 is connected with an assembly pipe 5. The temperature detection probe 6 can be detachably installed in the assembly pipe 5. The temperature measuring end of the temperature detection probe 6 extends into the connecting pipe 4, and the temperature detection probe 6 is electrically connected to the signal input end of the PLC controller 9 through a wire 7.

[0026] Specifically, in order to facilitate the smoke to smoothly enter the smoke inlet pipe 2 and return to the flue body 1 from the smoke return pipe 3, the inclination angle of the smoke inlet pipe 2 and the smoke return pipe 3 is 120°-150°. In this embodiment, in order to ensure the detection accuracy, the temperature measuring components are arranged in no less than five groups equidistantly along the circumference of the flue body 1.

[0027] Specifically, in order to further improve the detection accuracy, the outer wall of the smoke inlet pipe 2, the outer wall of the connecting pipe 4 and the outer wall of the smoke return pipe 3 are all wrapped with a heat insulation sleeve made of heat insulating rock wool.

[0028] In this embodiment, the inner wall of the assembly tube 5 is provided with internal threads, and the temperature detection probe 6 is fixedly mounted on the assembly tube 5 through the threads.

[0029] The PLC controller 9 may be a PLC controller of the S7-300 series produced by Siemens.

[0030] In some embodiments, the PLC controller 9 may transmit the detected temperature to the DCS control system 10 .

[0031] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0032] Working principle: by installing the temperature detection probe 6 on the outside of the flue body 1, in conjunction with the smoke inlet pipe 2, the smoke return pipe 3 and the connecting pipe 4, the smoke after heat exchange in the smoke heat exchanger 8 in the flue body 1 can be introduced into the connecting pipe 4, and then the temperature of the smoke after heat exchange is detected by the temperature detection probe 6 installed in the connecting pipe 4, and the detected signal is transmitted to the PLC controller 9, and the PLC controller 9 obtains a temperature value after processing according to the transmitted temperature signal. If the measured temperature value is greater than the set threshold, it is considered that there is a leakage problem in the smoke heat exchanger 8, and then the personnel are reminded to perform maintenance. When the temperature detection probe 6 needs to be replaced, the smoke inlet valve 201 and the smoke return valve 301 are closed, the damaged temperature detection probe 6 can be removed, and then a new temperature detection probe 6 is installed in the assembly pipe 5, and then the smoke inlet valve 201 and the smoke return valve 301 are opened to continue the detection. The entire disassembly and assembly process will not cause burns to personnel and ash leakage to pollute the environment, and the normal operation of other temperature measuring components will not be affected during the replacement of the temperature detection probe 6.

[0033] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An efficient and rapid intelligent leakage detection system for flue, characterized in that: The invention comprises a temperature measuring component and a PLC controller (9), wherein the temperature measuring component comprises a smoke inlet pipe (2), a smoke return pipe (3), a connecting pipe (4), and a temperature detection probe (6); the smoke inlet pipe (2) and the smoke return pipe (3) are arranged in a mirror image; the upper end and the lower end of the smoke inlet pipe (2) are both arranged as transverse pipes; the two transverse pipes are connected by an inclined pipe arranged obliquely; the smoke inlet of the smoke inlet pipe (2) and the smoke return port of the smoke return pipe (3) are both arranged inside the flue body (1); the smoke outlet of the smoke inlet pipe (2) and the smoke inlet of the smoke return pipe (3) are both arranged outside the flue body (1) The smoke inlet of the smoke inlet pipe (2) is arranged on the leeward side of the smoke heat exchanger (8), one end of the connecting pipe (4) is connected to the smoke outlet of the smoke inlet pipe (2), and the other end of the connecting pipe (4) is connected to the smoke inlet of the smoke return pipe (3), the connecting pipe (4) is connected to an assembly pipe (5), the temperature detection probe (6) is detachably installed in the assembly pipe (5), the temperature measuring end of the temperature detection probe (6) extends into the connecting pipe (4), and the temperature detection probe (6) is electrically connected to the signal input end of the PLC controller (9) through a wire (7).

2. According to claim 1, a high-efficiency and fast intelligent leakage detection system for flue, characterized in that: The temperature measuring components are arranged in no less than five groups at equal intervals along the circumference of the flue body (1).

3. The efficient and rapid intelligent leakage detection system for flue according to claim 2 is characterized in that: The outer wall of the smoke inlet pipe (2), the outer wall of the connecting pipe (4) and the outer wall of the smoke return pipe (3) are all wrapped with a heat insulation sleeve.

4. The efficient and rapid intelligent leakage detection system for flue according to claim 3 is characterized in that: The smoke inlet pipe (2) is provided with a smoke inlet valve (201), and the smoke return pipe (3) is provided with a smoke return valve (301).

5. The efficient and rapid intelligent leakage detection system for flue according to claim 1 is characterized in that: The inner wall of the assembly tube (5) is provided with an internal thread, and the temperature detection probe (6) is fixedly mounted on the assembly tube (5) via the thread.

6. The efficient and rapid intelligent leakage detection system for flue according to claim 3 is characterized in that: The inclination angles of the smoke inlet pipe (2) and the smoke return pipe (3) are between 120° and 150°.

Images