Leakage checking device for boiler air and smoke system of thermal power plant

Abstract

The utility model discloses a thermal power plant boiler air and smoke system leakage inspection device, which comprises an inspection device and a boiler, a smoke pipe is arranged on one side of the boiler, the inspection device comprises an inspection part, the inspection part comprises an installation part with a hollow central position, and a connecting pipe is arranged in the installation part. Smoke suction pipes with one ends extending out of the inner wall of the mounting part are arranged on the inner side of the connecting pipe at intervals, smoke sensors are arranged in the smoke suction pipes, air draft devices connected with the connecting pipe are arranged on the outer wall of the mounting part at intervals, and indicator lamps in one-to-one correspondence with the smoke suction pipes are arranged on the end face of one side of the mounting part at intervals. According to the utility model, the smoke leakage condition of the smoke tube can be checked in a multidirectional and multi-angle manner, the specific smoke leakage position on the smoke tube can be quickly and accurately judged by utilizing the lighting indication of the indicating lamps at different positions, and the leakage checking effect of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the field of flue leakage detection devices, in particular to a leakage detection device for an air and smoke system of a boiler in a thermal power plant. Background Art

[0002] A thermal power plant, also known as a thermal power plant, is a factory that uses coal, oil, and natural gas as fuel to produce electricity. Its basic production process is: the fuel burns in the boiler to heat water to make steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy, and then the turbine drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] The tail of the boiler is used for smoke exhaust and is connected to the wind and smoke system, that is, the smoke pipe of the wind and smoke system is connected to the smoke exhaust port of the boiler. When the boiler is burning, the wind and smoke system connected to the tail of the boiler will leak smoke due to long-term use of the smoke pipe. Most of the smoke alarms on the market for detecting the flue at the tail of the boiler are fixed and can only detect a certain area, which has great limitations. Publication No. CN217978082U discloses a device for detecting leaks in the tail flue of a boiler in a large thermal power plant, including a boiler, wherein a flue is fixedly connected to the right side of the boiler, a fixed plate is fixedly connected to the surface of the flue, a connecting plate is fixedly connected to the front side of the fixed plate, a threaded rod is movably connected inside the connecting plate, a rotating shaft is fixedly connected to the right side of the threaded rod, a motor is fixedly connected to one end of the rotating shaft, a stabilizing plate is fixedly connected to one side of the rotating shaft, a movable frame is sleeved on the left side of the flue surface, and a connecting block is fixedly connected to the front side of the movable frame. The utility model can adjust the position of the movable frame by means of a motor in conjunction with the threaded rod and the connecting block, so that the smoke sensor can monitor each position of the section, thereby reducing the limitations of the device; the leaked smoke particles can be adsorbed by means of a smoke exhaust fan in conjunction with a dust suction pipe and an adsorption net, thereby preventing irreversible damage to the body caused by inhalation by the staff.

[0004] However, the device has only one smoke detection port, which is arranged on the top of the device. When the inspection device moves and works to detect smoke leakage, it can only determine that there is smoke leakage in the area of ​​the section of the smoke pipe, but cannot lock the specific area or direction of the smoke pipe leakage. That is, the smoke leakage inspection effect of the existing thermal power plant boiler air and smoke system leakage inspection device is not ideal. Utility Model Content

[0005] The utility model provides a leakage detection device for an air and smoke system of a thermal power plant boiler, which is used to solve the technical problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A leak inspection device for a boiler air and smoke system in a thermal power plant comprises an inspection device and a boiler, wherein a smoke pipe is arranged on one side of the boiler, the inspection device comprises an inspection portion, the inspection portion comprises a mounting portion with a hollow center, a connecting pipe is arranged in the mounting portion, a smoke pipe with one end extending out of the inner wall of the mounting portion is arranged at intervals on the inner side of the connecting pipe, a smoke sensor is arranged in the smoke pipe, an exhaust device connected to the connecting pipe is arranged at intervals on the outer wall of the mounting portion, and indicator lights whose positions correspond to the smoke pipes are arranged at intervals on one end face of the mounting portion.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model uses the coordinated effects of the installation part, the connecting pipe, the smoking pipe, the indicator light and other structures to enable the device to check the smoke pipe for smoke leakage from multiple directions and angles. The lighting indications of the indicator lights at different positions can be used to quickly and accurately determine the specific smoke leakage position on the smoke pipe, thereby improving the leak detection effect of the device.

[0010] As a further improvement of the above solution, the inner wall size of the mounting portion is larger than the outer wall size of the smoke pipe.

[0011] The technical effect of the above improvement is: by setting the matching sizes of the smoke pipe and the inspection part, the inspection part of the device can be conveniently installed on the outside of the smoke pipe and further facilitate mobile inspection.

[0012] As a further improvement of the above solution, an exhaust pipe connected to the connecting pipe is arranged at intervals on the outside of the connecting pipe, the exhaust device is positioned on the outer wall of the mounting portion to match the exhaust pipe, and a fan is installed in the exhaust device.

[0013] The technical effect of the above-mentioned improvement is: through the setting of the exhaust pipe and the fan, the device can conveniently control the smoking pipe to smoke through the fan in the exhaust device, and at the same time, the exhaust pipes arranged at multiple positions can make the smoking rate and strength of several smoking pipes remain uniform, further improving the leak detection effect of the device.

[0014] As a further improvement of the above solution, the inspection device further includes a transportation part, and the transportation part is arranged at the lower end of the inspection part.

[0015] The technical effect of the above improvement is: through the provision of the transport part, the device can further facilitate the use of the transport part to drive the inspection part to move outside the smoke pipe for inspection.

[0016] As a further improvement of the above solution, the transport part includes a transport seat, rollers are arranged at intervals at the lower end of the transport seat, and a telescopic rod is arranged at the upper end of the transport seat, the output end of which is connected to the bottom of the inspection part.

[0017] The technical effect of the above improvement is: through the arrangement of the telescopic rod and the transport seat, the device can use the transport seat to stably move the inspection part at its upper end, and at the same time, the height of the inspection part can be conveniently adjusted through the telescopic rod to further facilitate the adaptation of the inspection part to the smoke pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a side structural schematic diagram of the inspection device of the utility model.

[0020] Figure 3 It is a front view cross-sectional structural schematic diagram of the inspection device of the utility model.

[0021] Figure 4 It is a side view cross-sectional structural diagram of the inspection part of the utility model.

[0022] In the figure: 1. boiler; 2. smoke pipe; 3. inspection department; 4. transportation department; 5. installation department; 6. smoke pipe; 7. indicator light; 8. exhaust device; 9. smoke sensor; 10. connecting pipe; 11. telescopic rod; 12. transportation base; 13. fan; 14. exhaust pipe. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution, the utility model is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0024] Embodiment 1:

[0025] like Figure 1-2 As shown, the specific scheme of this embodiment is: a leak detection device for the air and smoke system of a thermal power plant boiler, comprising an inspection device and a boiler 1, a smoke pipe 2 is arranged on one side of the boiler 1, the inspection device comprises an inspection part 3, the inspection part 3 comprises a mounting part 5 hollowed out at the center, the hollow area is used for the smoke pipe 2 to pass through, a connecting pipe 10 is arranged in the mounting part 5, a smoking pipe 6 with one end extending out of the inner wall of the mounting part 5 is arranged at intervals on the inner side of the connecting pipe 10, a smoke sensor 9 is arranged in the smoking pipe 6, an exhaust device 8 connected to the connecting pipe 10 is arranged at intervals on the outer wall of the mounting part 5, and indicator lights 7 corresponding to the positions of the smoking pipes 6 are arranged at intervals on one side end surface of the mounting part 5, the indicator lights 7 are electrically connected to the smoke sensor 9 in the smoking pipe 6, that is, when the smoke sensor 9 detects smoke, it will send a signal to the corresponding indicator light 7, and the indicator light 7 at this position will light up as a display of the inspection result.

[0026] Embodiment 2:

[0027] like Figure 1 As shown, as a preferred embodiment of the above embodiment, the inner wall size of the mounting portion 5 is larger than the outer wall size of the smoke pipe 2. By setting the matching size of the smoke pipe 2 and the inspection portion 3, the inspection portion 3 of the device can be conveniently installed on the outside of the smoke pipe 2 and further facilitate the mobile inspection. The outer side of the connecting pipe 10 is arranged with an exhaust pipe 14 connected thereto, and the position of the exhaust device 8 on the outer wall of the mounting portion 5 is adapted to the exhaust pipe 14, and a fan 13 is installed in the exhaust device 8. Through the arrangement of the exhaust pipe 14 and the fan 13, the device can conveniently control the smoke pipe 6 to smoke through the fan 13 in the exhaust device 8, and the exhaust pipe 14 arranged at multiple positions can keep the smoking rate and strength of several smoke pipes 6 uniform, further improving the leak detection effect of the device. The inspection device also includes a transport portion 4, which is arranged at the lower end of the inspection portion 3. Through the arrangement of the transport portion 4, the device can further facilitate the use of the transport portion 4 to drive the inspection portion 3 to move and inspect outside the smoke pipe 2. The transport part 4 includes a transport seat 12, rollers are arranged at intervals at the lower end of the transport seat 12, and a telescopic rod 11 is arranged at the upper end of the transport seat 12, the output end of which is connected to the bottom of the inspection part 3. Through the arrangement of the telescopic rod 11 and the transport seat 12, the device can use the transport seat 12 to stably move the inspection part 3 at its upper end, and the telescopic rod 11 can conveniently adjust the height of the inspection part 3 to further facilitate the adaptation of the inspection part 3 to the smoke pipe 2.

[0028] The specific working principle of this utility model:

[0029] When the device is used, the inspection part 3 is installed on the outside of the smoke pipe 2. When the boiler 1 is working, smoke will be exhausted from the smoke pipe 2. At this time, the fan 13 of the device is started, and air is extracted from the smoke pipe 6 through the fan 13. At the same time, the inspection part 3 is driven to start moving along the length direction of the smoke pipe 2. During the movement and extraction of air by the inspection part 3, as long as smoke leakage occurs somewhere on the smoke pipe 2, the leaked smoke will be sucked away by the smoke pipe 6 close to the outlet and sensed by the smoke sensor 9 in the outlet smoke pipe 6; when one of the indicator lights 7 on one side of the installation part 5 lights up, the movement of the inspection part 3 is stopped, and the position of 7 can be used to confirm that the corresponding specific area of ​​the smoke pipe 2 has smoke leakage. Repeat the above steps until all the smoke pipes 2 of the wind and smoke system are checked and the whole inspection process is completed. The utility model uses the cooperation of the mounting portion 5, the connecting pipe 10, the smoking pipe 6, the indicator light 7 and other structures to enable the device to check whether the smoke pipe 2 is leaking from multiple directions and angles. By using the lighting indications of the indicator lights 7 at different positions, the specific smoke leakage position on the smoke pipe 2 can be quickly and accurately determined, thereby improving the leak detection effect of the device.

[0030] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. The above are only preferred implementations of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the utility model, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A leakage inspection device for a boiler air and smoke system in a thermal power plant, comprising an inspection device and a boiler (1), wherein a smoke pipe (2) is arranged on one side of the boiler (1), and characterized in that: The inspection device comprises an inspection portion (3), the inspection portion (3) comprises a mounting portion (5) with a hollow center, a connecting pipe (10) is arranged inside the mounting portion (5), a smoking pipe (6) with one end extending out of the inner wall of the mounting portion (5) is arranged at intervals inside the connecting pipe (10), a smoke sensor (9) is arranged inside the smoking pipe (6), an exhaust device (8) connected to the connecting pipe (10) is arranged at intervals on the outer wall of the mounting portion (5), and indicator lights (7) are arranged at intervals on one end surface of the mounting portion (5) and have positions corresponding to the smoking pipes (6).

2. A thermal power plant boiler air and smoke system leak detection device according to claim 1, characterized in that: The inner wall size of the mounting portion (5) is larger than the outer wall size of the smoke pipe (2).

3. A leakage detection device for boiler air and smoke system of thermal power plant according to claim 1, characterized in that: An exhaust pipe (14) in communication with the connecting pipe (10) is disposed at intervals on the outside of the connecting pipe (10); the exhaust device (8) is adapted to the exhaust pipe (14) at a position on the outer wall of the mounting portion (5); and a fan (13) is installed in the exhaust device (8).

4. A leakage detection device for boiler air and smoke system of a thermal power plant according to any one of claims 1 to 3, characterized in that: The inspection device further comprises a transport portion (4), wherein the transport portion (4) is arranged at the lower end of the inspection portion (3).

5. A leakage detection device for boiler air and smoke system of thermal power plant according to claim 4, characterized in that: The transport portion (4) comprises a transport seat (12), rollers are arranged at intervals at the lower end of the transport seat (12), and a telescopic rod (11) is arranged at the upper end of the transport seat (12) and the output end is connected to the bottom of the inspection portion (3).

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