CN215411826U - Tower furnace economizer and primary reheater dust deposition condition monitoring device - Google Patents
Tower furnace economizer and primary reheater dust deposition condition monitoring device Download PDFInfo
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- CN215411826U CN215411826U CN202121556362.0U CN202121556362U CN215411826U CN 215411826 U CN215411826 U CN 215411826U CN 202121556362 U CN202121556362 U CN 202121556362U CN 215411826 U CN215411826 U CN 215411826U
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Abstract
The utility model discloses a device for monitoring ash deposition conditions of a tower furnace economizer and a primary reheater. The utility model relates to a beam body suspension sports car, a speed reducer, a motor, a high-temperature video probe gun and a high-temperature lighting probe gun, wherein the motor is connected with the speed reducer, an output shaft of the speed reducer is fixedly connected with a gear, and the gear is meshed with a rack fixed on the beam body; the motor and the speed reducer are both fixed on the sports car, and the sports car is driven to move forwards or backwards through the matching of the gear and the rack; one end of the high-temperature video probe gun and one end of the high-temperature lighting probe gun are fixed on the sports car, and the other ends of the high-temperature video probe gun and the high-temperature lighting probe gun penetrate through the furnace wall; a control line is arranged between the motor and the PLC control cabinet; control lines are also arranged between the high-temperature video detection gun and the high-temperature lighting detection gun and the PLC control cabinet, and the PLC control cabinet is used for transmitting signals to the centralized control room. The utility model solves the problem that the ash accumulation conditions of the economizer and the primary reheater of the tower furnace cannot be monitored in real time, and solves the risk of ash collapse of the tower furnace, thereby preventing the main fuel of the boiler from tripping due to the ash collapse.
Description
Technical Field
The utility model belongs to the technical field of boiler monitoring equipment, and relates to a device for monitoring ash deposition conditions of a tower type boiler economizer and a primary reheater.
Background
The tower furnace is a form commonly adopted by large coal-fired power station boilers, has the advantages of quick start and small deviation of steam temperature and smoke temperature at two sides of the boiler, but the pipe clearance of the coal economizer and the primary reheater at the upper part of a hearth of the tower furnace is small, the flow rate of smoke is low, dust is easily accumulated on a heating surface, the dust accumulation in the area is aggravated when a unit runs at low load, and the phenomenon of dust collapse of the hearth can be caused when the unit runs at serious load. In recent years, after deep peak shaving is implemented on a coal-fired unit, the low-load operation time of the unit is greatly increased, the probability of ash collapse of a tower furnace is increased, and the main fuel of a boiler is tripped seriously. Therefore, the tower furnace ash collapse is a great hidden trouble in the deep peak regulation process of the tower furnace, the occurrence probability is high, and the damage is great.
At present, no device for directly monitoring the ash deposition of a tower furnace economizer and a primary reheater is available, operators can only blow ash to pipes in the economizer and the primary reheater area by feel, the ash blowing effect and the ash deposition condition of the pipes on the heating surface of the area cannot be accurately mastered, the temperature of a hearth of the area is less than 700 ℃, the visible light brightness is low, and the ash deposition condition of the pipes in the area cannot be directly monitored through a fire observation hole arranged outside the area.
Therefore, it is a problem to be solved by those skilled in the art to provide a device for effectively monitoring the ash deposition in the tube of the economizer and primary reheater of the tower furnace in real time.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a device for monitoring the ash deposition conditions of a tower furnace economizer and a primary reheater in real time, so as to solve the problem that the ash deposition conditions of the tower furnace economizer and the primary reheater cannot be monitored in real time.
Therefore, the utility model adopts the following technical scheme: the device comprises a beam body, a high-temperature video probe gun, a high-temperature lighting probe gun, a PLC (programmable logic controller) control cabinet, a motor, a roadster, a speed reducer, a gear and a rack;
the sports car, the speed reducer, the motor, the high-temperature video probe gun and the high-temperature lighting probe gun are suspended on the beam body, the motor is connected with the speed reducer, an output shaft of the speed reducer is fixedly connected with a gear, and the gear is meshed with a rack fixed on the beam body; the motor and the speed reducer are both fixed on the sports car, the speed reducer is driven by the motor, and the sports car moves forwards or backwards through the matching of the gear and the rack; one end of the high-temperature video probe gun and one end of the high-temperature lighting probe gun are fixed on the roadster, the other end of the high-temperature video probe gun and the other end of the high-temperature lighting probe gun are free ends capable of penetrating through a furnace wall, and the roadster drives the high-temperature video probe gun and the high-temperature lighting probe gun to move back and forth;
a signal wire is arranged between the motor and the PLC control cabinet; and a signal wire is also arranged between the high-temperature video detection gun and the high-temperature lighting detection gun and the PLC control cabinet, and the PLC control cabinet is used for transmitting signals to the centralized control room.
The PLC control cabinet is used for receiving an operation instruction sent by the centralized control room, sending an execution signal to each relevant device and executing a sequence control program, and simultaneously receiving a video signal recorded by the high-temperature video probe and a thermocouple temperature signal and feeding back the video signal and the thermocouple temperature signal to the centralized control room.
Furthermore, front supporting wheels for supporting the high-temperature video probe gun and the high-temperature lighting probe gun are arranged below the high-temperature video probe gun and the high-temperature lighting probe gun, and the high-temperature video probe gun and the high-temperature lighting probe gun can advance and retreat flexibly.
Furthermore, the device for monitoring the ash deposition condition of the tower furnace economizer and the primary reheater further comprises a compressed air electric shutoff door controlled by a PLC control cabinet, and the compressed air electric shutoff door is used for controlling the on-off of air in a compressed air pipe.
Furthermore, the device for monitoring the ash deposition condition of the tower type furnace economizer and the primary reheater further comprises a furnace wall electric shutoff door controlled by a PLC control cabinet, wall holes for the high-temperature video detection gun and the high-temperature lighting detection gun to enter and exit the furnace chamber are formed in the furnace wall, a protective sleeve is arranged in the wall hole, and the furnace wall electric shutoff door is arranged on the furnace wall and used for covering the wall holes when the high-temperature video detection gun and the high-temperature lighting detection gun are not used, so that the furnace chamber is prevented from air leakage during the non-operation period.
Furthermore, the front and the rear of the beam body are respectively provided with a front limit switch and a rear limit switch which are used for limiting the motion area of the sports car.
Furthermore, the sports car, the speed reducer, the motor, the high-temperature video probe gun and the high-temperature lighting probe gun are suspended on the beam body through the pulley yoke. The pulley yoke is used for suspending the motor, the speed reducer, the sports car, the high-temperature video probe gun and the high-temperature lighting probe gun and driving the high-temperature video probe gun to move forwards and backwards.
Furthermore, the device for monitoring the ash deposition condition of the tower furnace economizer and the primary reheater further comprises an electrical control cabinet which provides power for the motor, the furnace wall electric shutoff door, the high-temperature video detection gun and the high-temperature lighting detection gun.
Furthermore, two ends of the beam body are respectively provided with a hanging bracket for hanging the beam body.
Furthermore, a video probe and a thermocouple are arranged inside the high-temperature video probe, and compressed air in a compressed air pipe is used for cooling.
Furthermore, an illumination light source and a thermocouple are arranged inside the high-temperature illumination probe, and compressed air in a compressed air pipe is used for cooling.
Further, the reduction gear is a worm reduction gear, which uses a speed converter of a gear to reduce the number of revolutions of the motor to a required number of revolutions and obtain a large torque.
The utility model has the following beneficial effects: the utility model solves the problem that the ash accumulation conditions of the economizer and the primary reheater of the tower furnace cannot be monitored in real time, and solves the risk of ash collapse of the tower furnace, thereby preventing the main fuel of the boiler from tripping caused by the ash collapse and ensuring the safe operation of the tower furnace.
Drawings
FIG. 1 is a schematic view of the present invention during monitoring;
FIG. 2 is a partial schematic view of the present invention without monitoring;
fig. 3 is a schematic structural diagram of the high-temperature video probe, the high-temperature lighting probe and the protective sleeve according to the utility model.
In the figure, 1-hanger, 2-rear limit switch, 3-beam body, 4-rack, 5-compressed air pipe, 6-pulley frame, 7-speed reducer, 8-gear, 9-motor, 10-sports car, 11-high temperature video probe, 12-high temperature lighting probe, 13-housing, 14-front riding wheel, 15-PLC control cabinet, 16-electrical control cabinet, 17-front limit switch, 18-protective sleeve, 19-furnace wall electric shutoff door, 20-furnace wall, 21-compressed air electric shutoff door, 22-water wall pipe, 23-video probe, 24-thermocouple, 25-lighting source.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
The device for monitoring the ash deposition condition of the tower furnace economizer and the primary reheater as shown in fig. 1-3 comprises a beam body 3, a high-temperature video probe 11, a high-temperature lighting probe 12, a PLC control cabinet 15, a motor 9, a sports car 10, a speed reducer 7, a gear 8, a rack 4, a compressed air electric shutoff door 21, a furnace wall electric shutoff door 19 and an electric control cabinet 16. The compressed air electric shutoff door 21 and the furnace wall electric shutoff door 19 are controlled by the PLC control cabinet 15. The compressed air electric shutoff valve 21 is used for controlling the on or off of the air in the compressed air pipe 5. The electric control cabinet 16 provides power for the motor 9, the furnace wall electric shutoff door 19, the high-temperature video probe 11 and the high-temperature lighting probe 12.
The front and the back of the beam body 3 are respectively provided with a front limit switch 17 and a back limit switch 2 which are used for limiting the motion area of the sports car. Two ends of the beam body 3 are respectively provided with a hanging bracket 1.
The sports car 10, the speed reducer 7, the motor 9, the high-temperature video probe gun 11 and the high-temperature lighting probe gun 12 are suspended on the beam body 3 through the pulley yoke 6, the motor 9 is connected with the speed reducer 7, an output shaft of the speed reducer 7 is fixedly connected with the gear 8, and the gear 8 is meshed with the rack 4 fixed on the beam body 3. The sports car 10, the speed reducer 7, the motor 9, the gear 8, the rack 4 and the electric control cabinet 16 are arranged in the casing 13.
The motor 9 and the speed reducer 7 are both fixed on the sports car 10, the speed reducer 7 is driven by the motor 9, and the sports car 10 moves forwards or backwards through the matching of the gear 8 and the rack 4; one end of the high-temperature video detection gun 11 and the high-temperature illumination detection gun 12 is fixed on the roadster 10, the other end of the high-temperature video detection gun 11 and the high-temperature illumination detection gun 12 is a free end which can penetrate through the furnace wall 20, and the roadster 10 drives the high-temperature video detection gun 11 and the high-temperature illumination detection gun 12 to move back and forth.
A control line is arranged between the motor 9 and the PLC control cabinet 15; control lines are also arranged between the high-temperature video detection gun 11, the high-temperature lighting detection gun 12 and the PLC control cabinet 15, and the PLC control cabinet 15 is used for transmitting signals to a centralized control room.
Front supporting wheels 14 for supporting the high-temperature video probe 11 and the high-temperature lighting probe 12 are arranged below the high-temperature video probe and the high-temperature lighting probe, and the high-temperature video probe and the high-temperature lighting probe can flexibly advance and retreat.
The furnace wall 20 is provided with a plurality of water-cooled wall tubes 22 and wall holes for the high-temperature video detection gun and the high-temperature lighting detection gun to enter and exit the furnace chamber, protective sleeves 18 are arranged in the wall holes, and the furnace wall electric shutoff door 21 is arranged on the furnace wall 20 and used for covering the wall holes when the high-temperature video detection gun and the high-temperature lighting detection gun are not used.
The high-temperature video detection gun 11 is internally provided with a video probe 23 and a thermocouple 24, and is cooled by compressed air in a compressed air pipe 5. The diameter of the high-temperature video probe is 57mm, the outer wall of the probe is made of high-temperature-resistant stainless steel such as 1Cr18NiTi, the high temperature of more than 800 ℃ can be borne, the maximum smoke temperature of an inlet and an outlet of a tower furnace economizer and an outlet of a primary reheater is not more than 500 ℃, and the maximum smoke temperature of an inlet of the primary reheater is not more than 700 ℃. The video images captured by the video probe 23 are transmitted to the local PLC control cabinet through the coaxial cable. The thermocouple monitors the temperature of the video probe and accesses a temperature signal into the PLC control cabinet.
The high-temperature illumination probe 12 is internally provided with an LED illumination light source 25 and a thermocouple 24, and is cooled by compressed air in the compressed air pipe 5. The diameter of the high-temperature illumination probe is 57mm, and the outer wall of the probe is made of high-temperature-resistant stainless steel, such as 1Cr18NiTi, and can bear the high temperature of about 800 ℃. The LED lighting source provides illumination for the high-temperature video probe. The thermocouple monitors the temperature of the LED lighting source and accesses a temperature signal into the PLC control cabinet.
The utility model relates to a mechanical device for sending a video probe (comprising a high-temperature video probe 11 and a high-temperature lighting probe 12) into a hearth and monitoring the dust deposition condition of an economizer and a primary reheater area, wherein a video probe 23 is fixed in the high-temperature video probe 11, a lighting source 25 in the high-temperature lighting probe 12 is used for providing lighting for the economizer and the primary reheater area, the high-temperature video probe and the high-temperature lighting probe move back and forth in the hearth to monitor the dust deposition condition of the economizer and the primary reheater, and video signals are amplified by a PLC control cabinet and then transmitted to a centralized control room.
Referring to fig. 1, an operator in the centralized control room sends an instruction to the PLC control cabinet 15 through dcs, starts the video monitoring device of the tower furnace economizer and the primary reheater, opens the compressed air electric shutoff door 21, and turns on the compressed air cooling air for the high temperature video probe 11 and the high temperature lighting probe 12, and simultaneously turns on the lighting source in the high temperature lighting probe 12, and turns on the furnace wall electric shutoff door 19.
Referring to fig. 1, the PLC control cabinet sends out an instruction to start the motor 9, and after the speed is reduced by the speed reducer 7, the motor drives the sports car 10, and the high temperature video probe gun 11 and the high temperature lighting probe gun 12 fixed on the sports car to move toward the hearth at a speed of 3 m/s by meshing with the gear 8 and the rack 4 which are coaxial with the output shaft.
Referring to fig. 1, after a high-temperature video probe gun 11 and a high-temperature lighting probe gun 12 enter a hearth, the dust deposition condition of an economizer and a primary reheater area begins to be monitored, video signals are transmitted to a PLC control cabinet through a coaxial cable, amplified and transmitted to a centralized control room, meanwhile, the distance of the probe gun sent into a furnace is also transmitted to dcs by a position display system, when the probe gun advances to touch a front limit switch 17, the probe gun reaches the foremost end and begins to retreat, when the probe gun touches a rear limit switch 2, a carriage 10 stops moving, and an electric shutoff door 19 of a furnace wall is closed.
Referring to fig. 1, after the high temperature video probe 11 and the high temperature lighting probe 12 return to the original positions, the compressed air continues to cool the inside thereof, and after 30 minutes, the compressed air electric shutoff door 20 is automatically closed, completing a cycle.
Referring to fig. 3, the high temperature video probe 11 and the high temperature lighting probe 12 can transmit the temperature near the high temperature probe and the lighting source to dcs, and when the temperature reaches an alarm value, the probes give an alarm and automatically retract.
The embodiments described above will enable those skilled in the art to more fully understand the present invention, but the present invention is not limited thereto. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention, without departing from the technical solution of the present invention, still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. The device for monitoring the ash deposition condition of the tower furnace economizer and the primary reheater is characterized by comprising a beam body (3), a high-temperature video probe gun (11), a high-temperature lighting probe gun (12), a PLC (programmable logic controller) control cabinet (15), a motor (9), a roadster (10), a speed reducer (7), a gear (8) and a rack (4);
the sports car is characterized in that a sports car (10), a speed reducer (7), a motor (9), a high-temperature video probe gun (11) and a high-temperature lighting probe gun (12) are suspended on the beam body (3), the motor (9) is connected with the speed reducer (7), an output shaft of the speed reducer (7) is fixedly connected with a gear (8), and the gear (8) is meshed with a rack (4) fixed on the beam body (3);
the motor (9) and the speed reducer (7) are both fixed on the sports car (10), the speed reducer (7) is driven by the motor (9), and the sports car (10) moves forwards or backwards through the matching of the gear (8) and the rack (4); one end of the high-temperature video probe gun (11) and one end of the high-temperature lighting probe gun (12) are fixed on the sports car (10), the other end of the high-temperature video probe gun and the other end of the high-temperature lighting probe gun are free ends which can penetrate through a furnace wall (20), and the sports car (10) drives the high-temperature video probe gun (11) and the high-temperature lighting probe gun (12) to move back and forth;
a control line is arranged between the motor (9) and the PLC control cabinet (15); and control lines are also arranged between the high-temperature video detection gun (11), the high-temperature lighting detection gun (12) and the PLC control cabinet (15), and the PLC control cabinet (15) is used for transmitting signals to a centralized control room.
2. The ash deposition monitoring device for the tower furnace economizer and the primary reheater according to claim 1, wherein a front supporting wheel (14) for supporting the high temperature video probe (11) and the high temperature lighting probe (12) is arranged below the high temperature video probe and the high temperature lighting probe, and the front supporting wheel and the high temperature lighting probe are flexibly advanced and retreated.
3. The tower furnace economizer and primary reheater ash deposition monitoring apparatus according to claim 1, further comprising a compressed air electric shutoff door (21) controlled by the PLC control cabinet (15), wherein the compressed air electric shutoff door (21) is used for controlling on or off of air in the compressed air pipe (5).
4. The ash deposition monitoring device for the tower furnace economizer and the primary reheater according to claim 1, further comprising a furnace wall electric shutoff door (19) controlled by a PLC control cabinet (15), wherein a wall hole for the high-temperature video probe and the high-temperature lighting probe to enter and exit the furnace chamber is formed in the furnace wall (20), a protective sleeve (18) is arranged in the wall hole, and the furnace wall electric shutoff door (19) is arranged on the furnace wall (20) and used for covering the wall hole when the high-temperature video probe and the high-temperature lighting probe are not used.
5. The tower furnace economizer and primary reheater ash deposition monitoring apparatus as claimed in claim 1, wherein the beam body (3) is provided with front and rear limit switches (17, 2) at the front and rear thereof, respectively, for limiting the moving area of the sports car.
6. The ash deposition monitoring device for the tower furnace economizer and the primary reheater according to claim 1, wherein the running car (10), the speed reducer (7), the motor (9), the high-temperature video probe (11) and the high-temperature lighting probe (12) are suspended from the beam body (3) through a pulley frame (6).
7. The tower furnace economizer and primary reheater ash deposition monitoring apparatus of claim 1 further comprising an electrical control cabinet (16) for providing power to the motor (9), the furnace wall power shut-off door (19), the high temperature video probe (11) and the high temperature lighting probe (12).
8. The tower furnace economizer and primary reheater ash deposition monitoring apparatus as claimed in claim 1, wherein a hanger (1) is provided at each end of the beam body (3).
9. The tower furnace economizer and primary reheater ash deposition monitoring apparatus as claimed in claim 1, wherein said high temperature video probe (11) is internally provided with a video probe (23) and a thermocouple (24), and is cooled by compressed air in a compressed air pipe (5).
10. The tower furnace economizer and primary reheater ash deposition monitoring apparatus as claimed in claim 1, wherein said high temperature lighting probe (12) is internally provided with a lighting source (25) and a thermocouple (24), and is cooled by compressed air in a compressed air pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556362.0U CN215411826U (en) | 2021-07-08 | 2021-07-08 | Tower furnace economizer and primary reheater dust deposition condition monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556362.0U CN215411826U (en) | 2021-07-08 | 2021-07-08 | Tower furnace economizer and primary reheater dust deposition condition monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215411826U true CN215411826U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121556362.0U Active CN215411826U (en) | 2021-07-08 | 2021-07-08 | Tower furnace economizer and primary reheater dust deposition condition monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215411826U (en) |
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2021
- 2021-07-08 CN CN202121556362.0U patent/CN215411826U/en active Active
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