Infrared hearth temperature field monitoring device

Abstract

The utility model relates to the technical field of boiler temperature detection, in particular to an infrared hearth temperature field monitoring device which comprises a boiler and a monitoring device. The monitoring device comprises a telescopic cylinder and an infrared thermometer; the telescopic cylinder comprises a pipe body and a sleeve; the left end of the pipe body is in sealed connection with the mounting hole, and the infrared thermometer is mounted in the sleeve; a first sliding groove is formed in the upper portion of the pipe body, a first sliding block is fixedly connected to the sleeve, and the first sliding block is in sliding connection with the first sliding groove; the pipe body is further provided with a second sliding groove, and a dust blocking cover assembly is slidably connected into the second sliding groove. The dust blocking cover assembly comprises a second sliding block and a cover plate which are hinged to each other, and the second sliding block is arranged in the second sliding groove in a sliding mode; a communicating hole is further formed in the pipe body, a connecting rod is arranged in the communicating hole, and the two ends of the connecting rod are fixedly connected with the first sliding block and the second sliding block respectively. According to the utility model, the damage to the infrared thermometer caused by over-high temperature of the hearth is effectively avoided, and the service life of the infrared thermometer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler temperature detection, in particular to an infrared furnace temperature field monitoring device. Background Art

[0002] For thermal power plants, boiler temperature detection is very important. It is one of the keys to ensure the normal operation of the entire thermal power plant, so boiler temperature detection must be done well. In the process of boiler temperature detection, the accuracy of temperature detection must be guaranteed to ensure that the temperature inside the boiler is within a normal and safe temperature range. Once an abnormal temperature occurs, necessary solutions can be taken according to the temperature monitoring results to prevent safety accidents.

[0003] At present, China Patent Publication No. CN218584194U discloses an infrared furnace temperature field monitoring device, including: a furnace, a monitoring device, and the monitoring device includes: a housing fixedly connected to one side of the furnace, a reflector fixedly connected to the inner wall of the housing, and an infrared receiver fixedly installed on the inner wall of the housing. Through the monitoring device, the infrared transmitting end of the infrared thermometer detects the temperature in the furnace, and then refracts the infrared rays through the reflector to the infrared receiver for numerical monitoring, and the monitored values ​​are displayed on the screen of the control panel, so that the temperature field inside the furnace can be monitored, which is convenient for the staff to perform real-time detection and control.

[0004] However, in actual use of this utility model patent, due to the high furnace temperature, the infrared thermometer is working at high temperature, and long-term use may cause damage to the infrared thermometer. Utility Model Content

[0005] Therefore, in view of the above problems, the utility model proposes an infrared furnace temperature field monitoring device to solve the problem in the prior art that the infrared thermometer is damaged due to long-term use due to the excessively high furnace temperature.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An infrared furnace temperature field monitoring device comprises a boiler and a monitoring device. The boiler is provided with a furnace and a furnace wall of the boiler is provided with mounting holes. The monitoring device comprises a telescopic tube and an infrared thermometer.

[0008] The telescopic tube comprises a tube body and a sleeve sleeved outside the tube body, and the tube body and the sleeve are slidably connected; the left end of the tube body is sealed and connected to the mounting hole, and the infrared thermometer is installed in the sleeve.

[0009] A first sliding groove opening upward is provided on the top of the tube body, a first sliding block is fixedly connected to the sleeve, and the first sliding block is slidably connected to the first sliding groove; the tube body is also provided with a second sliding groove opening to the right, the second sliding groove corresponds to the first sliding groove, and a dust cover assembly is slidably connected in the second sliding groove.

[0010] The dust cover assembly comprises a second sliding block and a cover plate which are hinged to each other, and the second sliding block is slidably arranged in the second sliding groove.

[0011] The tube body is also provided with a connecting hole, the two ends of which are respectively connected to the first sliding groove and the second sliding groove. A connecting rod is slidably arranged in the connecting hole, and the two ends of the connecting rod are respectively fixedly connected to the first sliding block and the second sliding block.

[0012] Furthermore, a support frame is provided on the outer side of the furnace wall, and the sleeve is slidably connected to the support frame.

[0013] Furthermore, the monitoring device also includes a PLC controller, and the infrared thermometer is electrically connected to the PLC controller.

[0014] Furthermore, the boiler is also provided with an operation panel, and the operation panel is electrically connected to the PLC controller.

[0015] Furthermore, the boiler is also provided with an audible and visual alarm, and the audible and visual alarm is electrically connected to the PLC controller.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are:

[0017] 1. By setting up a telescopic tube, the problem of infrared thermometer being easily damaged in a high-temperature environment during long-term use can be avoided. When the infrared thermometer needs to be used, the telescopic tube is compressed. At this time, the first sliding block drives the second sliding block to move to the left through the connecting rod, thereby driving the cover plate to move in the second sliding groove, that is, the cover plate is in an open state, and the infrared thermometer can monitor the temperature field in the furnace; when the infrared thermometer is not working, the telescopic tube is extended, and the infrared thermometer is away from the furnace, further avoiding damage to the infrared thermometer caused by high temperature. At this time, the first sliding block drives the second sliding block to move to the right through the connecting rod, thereby driving the cover plate to move to the right until the cover plate completely leaves the second sliding groove. The cover plate is in a natural drooping state due to its own gravity, covering one end of the tube body, further insulating the infrared thermometer and preventing dust from accumulating on the surface, thereby increasing the service life of the infrared thermometer.

[0018] 2. By setting up an infrared thermometer, a PLC controller, an operation panel and an audible and visual alarm, the flame temperature in the furnace can be automatically monitored. The infrared thermometer receives the infrared rays radiated by the flame in the furnace, thereby monitoring the temperature of the flame in the furnace and transmitting the signal to the PLC controller. When the temperature is detected to be abnormal, the PLC controller controls the audible and visual alarm to send out an alarm signal, and people can control the operation of the boiler through the operation panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the telescopic cylinder of the utility model (retracted state);

[0021] Figure 3 It is a structural schematic diagram of the telescopic cylinder of the utility model (in a stretched state);

[0022] Figure 4 It is a circuit connection schematic diagram of the utility model. DETAILED DESCRIPTION

[0023] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0024] refer to Figures 1 to 4 This embodiment provides an infrared furnace 11 temperature field monitoring device, including a boiler 1 and a monitoring device. The boiler 1 is provided with a furnace 11, and a mounting hole 12 is opened on the furnace wall of the boiler 1; the monitoring device includes a telescopic tube and an infrared thermometer 2.

[0025] The telescopic cylinder includes a tube body 3 and a sleeve 4 sleeved outside the tube body 3, and the tube body 3 and the sleeve 4 are slidably connected; the left end of the tube body 3 is sealed and connected to the mounting hole 12, and the infrared thermometer 2 is installed in the sleeve 4, and the receiving end of the infrared thermometer 2 is aligned with the mounting hole 12. The telescopic cylinder is used to ensure the transmission of the optical path, and the infrared thermometer 2 is used to obtain the flame temperature in the furnace 11.

[0026] A first sliding groove 31 opening upward is provided on the top of the tube body 3, and a first sliding block 41 is fixedly connected to the sleeve 4, and the first sliding block 41 is slidably connected to the first sliding groove 31; the tube body 3 also has a second sliding groove 32 opening to the right, and the second sliding groove 32 corresponds to the first sliding groove 31, and a dust cover assembly is slidably connected in the second sliding groove 32, and the dust cover assembly is used for heat insulation and preventing dust from polluting the infrared thermometer 2.

[0027] The dust cover assembly includes a second sliding block 51 and a cover plate 52 which are hinged to each other. The cover plate 52 is made of heat-insulating material. The second sliding block 51 is slidably disposed in the second sliding slot 32. When the second sliding block 51 is located at the rightmost side in the second sliding slot 32, the cover plate 52 is completely outside the second sliding slot 32 and is in a vertical state under the action of gravity.

[0028] The tube body 3 is also provided with a connecting hole 33, the two ends of which are respectively connected to the first sliding groove 31 and the second sliding groove 32. A connecting rod 34 is slidably arranged in the connecting hole 33, and the two ends of the connecting rod 34 are respectively fixedly connected to the first sliding block 41 and the second sliding block 51.

[0029] In this specific embodiment, a support frame 13 is further provided on the outer side of the furnace wall, and the sleeve 4 is slidably connected to the support frame 13. The support frame 13 is used to further fix the telescopic cylinder to ensure the stability of the device.

[0030] In this specific embodiment, the monitoring device also includes a PLC controller 6, and the boiler 1 is also provided with an operation panel 7 and an audible and visual alarm 8. The infrared thermometer 2, the operation panel 7 and the audible and visual alarm 8 are all electrically connected to the PLC controller 6. The infrared thermometer 2 receives infrared rays radiated by the flame in the furnace 11, thereby judging the temperature of the flame in the furnace 11, and transmits the signal to the PLC controller 6 for monitoring. When the temperature is abnormal, the PLC controller 6 controls the audible and visual alarm 8 to send out an alarm signal, and people can control the operation of the boiler 1 through the operation panel 7 to avoid overheating and coking and overheating of the tube wall caused by excessive temperature.

[0031] The infrared thermometer 2, operation panel 7, sound and light alarm 8 and PLC controller 6 are all existing equipment and will not be described in detail here.

[0032] The working principle of the utility model is as follows:

[0033] When it is necessary to monitor the furnace temperature field of the boiler, the telescopic cylinder is compressed. At this time, the first sliding block 41 drives the second sliding block 51 to move to the left through the connecting rod 34, thereby driving the cover plate 52 to move in the second sliding groove 32, that is, the cover plate 52 is in an open state, and the infrared thermometer 2 can measure the flame temperature in the furnace 11; when it is not necessary to monitor the furnace temperature field, the telescopic cylinder is extended, and the infrared thermometer 2 is away from the furnace 11, further avoiding damage to the infrared thermometer 2 by high temperature. At this time, the first sliding block 41 drives the second sliding block 51 to move to the right through the connecting rod 34, thereby driving the cover plate 52 to move to the right until the cover plate 52 completely leaves the second sliding groove 32. The cover plate 52 is in a natural drooping state due to its own gravity, covering one end of the tube body 3, further insulating the infrared thermometer 2 and preventing dust from accumulating on the surface, thereby improving the service life of the infrared thermometer 2.

[0034] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An infrared furnace temperature field monitoring device, characterized in that: It comprises a boiler and a monitoring device, wherein a furnace is arranged in the boiler, and a mounting hole is opened on the furnace wall of the boiler; the monitoring device comprises a telescopic cylinder and an infrared thermometer; The telescopic tube comprises a tube body and a sleeve sleeved outside the tube body, the tube body and the sleeve are slidably connected; the left end of the tube body is sealed and connected to the mounting hole, and the infrared thermometer is installed in the sleeve; A first sliding groove opening upward is provided on the top of the tube body, a first sliding block is fixedly connected to the sleeve, and the first sliding block is slidably connected to the first sliding groove; the tube body is also provided with a second sliding groove opening to the right, the second sliding groove corresponds to the first sliding groove, and a dust cover assembly is slidably connected in the second sliding groove; The dust cover assembly comprises a second sliding block and a cover plate which are hinged to each other, and the second sliding block is slidably disposed in the second sliding groove; The tube body is also provided with a connecting hole, the two ends of which are respectively connected to the first sliding groove and the second sliding groove. A connecting rod is slidably arranged in the connecting hole, and the two ends of the connecting rod are respectively fixedly connected to the first sliding block and the second sliding block.

2. The infrared furnace temperature field monitoring device according to claim 1 is characterized in that: A support frame is also arranged on the outer side of the furnace wall, and the sleeve is slidably connected to the support frame.

3. The infrared furnace temperature field monitoring device according to claim 1, characterized in that: The monitoring device also includes a PLC controller, and the infrared thermometer is electrically connected to the PLC controller.

4. The infrared furnace temperature field monitoring device according to claim 3 is characterized in that: The boiler is also provided with an operation panel, and the operation panel is electrically connected to the PLC controller.

5. The infrared furnace temperature field monitoring device according to claim 3 is characterized in that: The boiler is also provided with an audible and visual alarm, which is electrically connected to the PLC controller.

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