Wear protection device for boiler bed temperature measuring point

Abstract

The utility model relates to the technical field of circulating fluidized bed boilers, and discloses an abrasion protection device for a boiler bed temperature measuring point, which comprises a furnace body, two vertical boxes are fixedly mounted at the top of the furnace body, the same top box is fixedly mounted at the tops of the two vertical boxes, a motor is fixedly mounted on the inner wall of the top of the top box, and a lifting mechanism is arranged between the top box and the vertical boxes; and a temperature measuring mechanism and a protection mechanism are arranged below the top box. Compared with the prior art, the device has the following advantages and effects that by arranging the lifting mechanism and the temperature measuring mechanism, the vertical position of the wear-resistant thermocouple can be adjusted, the wear-resistant thermocouple can be inserted into the center position of the bed material, and the temperature of the center position of the bed material can be conveniently measured through the wear-resistant thermocouple; and through the arrangement of the screw joint mechanism, the protection cylinder and the mounting base can be conveniently disassembled and assembled, and the purpose of conveniently replacing the protection cylinder can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of circulating fluidized bed boilers, and in particular to a wear protection device for boiler bed temperature measuring points. Background Art

[0002] The bed temperature thermocouple of the circulating fluidized bed boiler operates in the dense phase area of ​​the boiler. Since the designed fluidizing wind speed of the circulating fluidized bed boiler is 3-5m / s, the materials carried by the high-temperature airflow and a large amount of circulating ash particles in the wall flow are washed and mixed in the fluidized bed, causing varying degrees of wear on the heating surface, castables, bed temperature thermocouple probes, etc., especially the circulating materials and the ash particles in the wall flow severely wash the bed temperature thermocouple elements and the anti-wear protective sleeve. Therefore, the anti-wear protective sleeve of the thermocouple of large and medium-sized circulating fluidized bed boilers will wear 3-5mm after more than one month of operation. After 2-3 months of operation, the anti-wear protective sleeve of the thermocouple will be worn through and damaged and must be replaced.

[0003] After searching, the patent document with the authorization announcement number CN218599708U discloses a wear protection device for boiler bed temperature measuring points, including: a sleeve, a welding nut and a furnace wall. A plurality of holes to be measured are opened at equal intervals on the furnace wall, and the welding nut is installed inside the boiler through the holes to be measured. The sleeve is fixed to the furnace wall by the welding nut and the end of the sleeve faces the inside of the boiler, and the sleeve is parallel to the bottom of the boiler. The hollow inside of the sleeve is used to fix the wear-resistant thermocouple. The wear-resistant thermocouple enters the sleeve from the outside of the boiler through the hole to be measured, and the end of the wear-resistant thermocouple passes through the sleeve and faces the inside of the boiler. By designing the sleeve and adding a sleeve coating, it is used to resist the impact of fuel falling. The device has a simple structure and is easy to obtain materials and manufacture; the wear protection device withstands the impact of the thermocouple wear-resistant head when the fuel falls, slows down the wear of the temperature measuring wear-resistant head, and thus increases the service life of the temperature measuring point.

[0004] In actual use, it is found that the existing device fixes the sleeve on the furnace wall to protect the wear-resistant thermocouple, which makes it impossible to adjust the position of the wear-resistant thermocouple, making it inconvenient to measure the temperature of the center of the bed material in the boiler, thereby affecting the temperature measurement accuracy. Therefore, we propose a wear protection device for the boiler bed temperature measuring point to solve the above problem. Utility Model Content

[0005] The purpose of this application is to provide a wear protection device for boiler bed temperature measuring points, which can adjust the upper and lower positions of wear-resistant thermocouples, facilitate temperature measurement of the center of the bed material in the boiler, and thus improve the temperature measurement accuracy.

[0006] The above technical purpose of the present application is achieved through the following technical solutions: a wear protection device for boiler bed temperature measuring points, comprising a furnace body, two vertical boxes are fixedly installed on the top of the furnace body, the same top box is fixedly installed on the top of the two vertical boxes, a motor is fixedly installed on the inner wall of the top of the top box, and a lifting mechanism is arranged between the top box and the vertical boxes; a temperature measuring mechanism and a protection mechanism are arranged under the top box, and seat holes are opened on the adjacent sides of the two vertical boxes.

[0007] The further configuration of the present application is as follows: the lifting mechanism includes two screw rods and two screw rod seats, the two screw rods are rotatably installed on the top inner wall of the top box, the motor is located between the two screw rods, the bottom end of the screw rod is rotatably connected to the corresponding inner wall of the bottom of the vertical box, a screw rod seat is provided on the threaded sleeve of the screw rod, the screw rod seat is slidably connected to the corresponding seat hole, and a transmission mechanism is arranged between the screw rod and the output shaft of the motor.

[0008] By adopting the above technical solution and providing a lifting mechanism, the screw rod can drive the screw rod seat to move up and down, thereby achieving the purpose of driving the temperature detector to move up and down.

[0009] The present application is further configured as follows: the temperature measuring mechanism includes a temperature detector and a wear-resistant thermocouple, the same temperature detector is arranged on one side adjacent to the two screw seats, and a wear-resistant thermocouple is arranged at the bottom of the temperature detector.

[0010] By adopting the above technical solution and providing a temperature measuring mechanism, the temperature measuring device can measure the temperature inside the furnace body through a wear-resistant thermocouple.

[0011] The present application is further configured as follows: the protective mechanism includes a mounting seat and a protective tube, the mounting seat is fixedly mounted on the bottom of the temperature detector, the mounting seat sleeve is arranged on the outside of the wear-resistant thermocouple, a protective tube is arranged inside the mounting seat, the protective tube is located on the outside of the wear-resistant thermocouple, and a screw connection mechanism is arranged between the mounting seat and the protective tube.

[0012] By adopting the above technical solution and providing a protection mechanism, the wear-resistant thermocouple can be protected by the protection tube, thereby achieving the purpose of reducing the wear of the wear-resistant thermocouple.

[0013] The present application is further configured as follows: the screw connection mechanism includes an internal thread and an external thread, the inner side of the mounting seat is provided with an internal thread, the outer side of the protective tube is provided with an external thread, and the external thread is threadably connected to the internal thread.

[0014] By adopting the above technical solution and providing a screw connection mechanism, the external thread can be screwed or disengaged from the internal thread, thereby achieving the purpose of convenient disassembly and assembly of the protective tube and the mounting seat.

[0015] The present application is further configured as follows: the transmission mechanism includes two first transmission wheels, two second transmission wheels and two transmission belts, the fixed sleeve on the motor output shaft is provided with two first transmission wheels, the fixed sleeve on the screw rod is provided with a second transmission wheel, the second transmission wheel is located in the top box, and the transmission sleeves on the first transmission wheel and the corresponding second transmission wheel are provided with the same transmission belt.

[0016] By adopting the above technical solution and providing a transmission mechanism, the motor can drive the two screw rods to rotate simultaneously.

[0017] The present application is further configured as follows: the top inner wall and the bottom inner wall of the vertical box are fixedly mounted with a same fixing rod, the fixing rod is located inside the screw rod, and the screw rod seat is slidably sleeved on the fixing rod.

[0018] By adopting the above technical solution and providing a fixing rod, the screw seat can move more smoothly when moving up and down.

[0019] The present application is further configured as follows: a heat-conducting block is disposed on the inner wall of the bottom of the protective tube, and the heat-conducting block is adapted to the wear-resistant thermocouple.

[0020] By adopting the above technical solution and providing a heat-conducting block, the protective tube can transmit the temperature to the wear-resistant thermocouple through the heat-conducting block.

[0021] The present application is further configured as follows: a through hole is provided on the top of the furnace body, and the protective tube is adapted to the through hole.

[0022] By adopting the above technical solution and providing a through hole, the protective tube can move up and down in the through hole.

[0023] The present application is further configured as follows: a display screen is provided on the front side of the thermometer.

[0024] By adopting the above technical solution and providing a display screen, the temperature data can be read through the display screen.

[0025] The beneficial effects of this application are:

[0026] (1) Through the cooperation of the motor, two first transmission wheels, two second transmission wheels, two transmission belts, two screws and two screw seats, the motor can drive the two screw seats to move up and down at the same time, and can drive the temperature sensor and the wear-resistant thermocouple to move up and down, and can adjust the upper and lower positions of the wear-resistant thermocouple, and can insert the wear-resistant thermocouple into the center of the bed material, so that the wear-resistant thermocouple can measure the temperature of the center of the bed material, thereby achieving the purpose of improving the temperature measurement accuracy.

[0027] (2) Through the cooperation between the external thread and the internal thread, the external thread can be driven to rotate by rotating the protective tube, so that the external thread and the internal thread can be screwed together or disengaged, and the protective tube and the mounting seat can be conveniently disassembled and assembled, so that the protective tube can be easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a three-dimensional structural schematic diagram of a wear protection device for a boiler bed temperature measuring point of the present application;

[0030] Figure 2 This is a schematic diagram of the main structure of a wear protection device for a boiler bed temperature measuring point of the present application;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of a protection mechanism of a wear protection device for a boiler bed temperature measuring point of the present application;

[0032] Figure 4 It is a three-dimensional structural schematic diagram of a transmission mechanism of a wear protection device for a boiler bed temperature measuring point of the present application.

[0033] In the figure: 1. furnace body; 2. vertical box; 3. top box; 4. motor; 5. screw; 6. screw seat; 7. seat hole; 8. temperature sensor; 9. wear-resistant thermocouple; 10. mounting seat; 11. protective tube; 12. heat-conducting block; 13. fixing rod; 14. first transmission wheel; 15. second transmission wheel; 16. transmission belt; 17. display screen; 18. through hole; 19. internal thread; 20. external thread. DETAILED DESCRIPTION

[0034] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0035] See also Figure 1-Figure 4The present application provides a wear protection device for boiler bed temperature measuring points, comprising a furnace body 1, two vertical boxes 2 are fixedly installed on the top of the furnace body 1, the same top box 3 is fixedly installed on the top of the two vertical boxes 2, a motor 4 is fixedly installed on the top inner wall of the top box 3, and a lifting mechanism is arranged between the top box 3 and the vertical boxes 2; a temperature measuring mechanism and a protection mechanism are arranged below the top box 3, and seat holes 7 are opened on adjacent sides of the two vertical boxes 2.

[0036] Specifically, the lifting mechanism includes two screw rods 5 and two screw rod seats 6. The two screw rods 5 are rotatably installed on the top inner wall of the top box 3. The motor 4 is located between the two screw rods 5. The bottom end of the screw rod 5 is rotatably connected to the bottom inner wall of the corresponding vertical box 2. A screw rod seat 6 is threadedly sleeved on the screw rod 5. The screw rod seat 6 is slidably connected to the corresponding seat hole 7. A transmission mechanism is arranged between the screw rod 5 and the output shaft of the motor 4.

[0037] Specifically, the temperature measuring mechanism includes a temperature measuring device 8 and a wear-resistant thermocouple 9 . The adjacent sides of the two screw seats 6 are provided with the same temperature measuring device 8 , and the bottom of the temperature measuring device 8 is provided with a wear-resistant thermocouple 9 .

[0038] Specifically, the protective mechanism includes a mounting seat 10 and a protective tube 11. The mounting seat 10 is fixedly installed at the bottom of the temperature detector 8. The mounting seat 10 is sleeved on the outside of the wear-resistant thermocouple 9. A protective tube 11 is arranged inside the mounting seat 10. The protective tube 11 is located on the outside of the wear-resistant thermocouple 9. A screw connection mechanism is arranged between the mounting seat 10 and the protective tube 11.

[0039] Specifically, the screw connection mechanism includes an internal thread 19 and an external thread 20 . The internal thread 19 is disposed on the inner side of the mounting seat 10 , and the external thread 20 is disposed on the outer side of the protective tube 11 . The external thread 20 is threadedly connected to the internal thread 19 .

[0040] Specifically, the transmission mechanism includes two first transmission wheels 14, two second transmission wheels 15 and two transmission belts 16. Two first transmission wheels 14 are fixedly sleeved on the output shaft of the motor 4, and a second transmission wheel 15 is fixedly sleeved on the screw rod 5. The second transmission wheel 15 is located in the top box 3. The first transmission wheel 14 and the corresponding second transmission wheel 15 are provided with the same transmission belt 16 on the transmission sleeves.

[0041] Specifically, the top inner wall and the bottom inner wall of the vertical box 2 are fixedly mounted with a same fixing rod 13 , the fixing rod 13 is located inside the screw rod 5 , and the screw rod seat 6 is slidably sleeved on the fixing rod 13 .

[0042] Specifically, a heat-conducting block 12 is disposed on the inner wall of the bottom of the protective tube 11 , and the heat-conducting block 12 is compatible with the wear-resistant thermocouple 9 .

[0043] Specifically, a through hole 18 is opened on the top of the furnace body 1 , and the protective tube 11 is adapted to the through hole 18 .

[0044] Specifically, a display screen 17 is provided on the front side of the temperature detector 8 .

[0045] In the present application, when in use, the two first transmission wheels 14 can be driven to rotate by starting the motor 4, and the two transmission belts 16 and the two second transmission wheels 15 can be rotated, which can drive the two screw rods 5 to rotate, and the two screw rod seats 6 can be driven to move up and down at the same time, and the temperature sensor 8 and the wear-resistant thermocouple 9 can be driven to move up and down, so that the upper and lower positions of the wear-resistant thermocouple 9 can be adjusted, and the wear-resistant thermocouple 9 can be inserted into the center of the bed material, so that the wear-resistant thermocouple 9 can measure the temperature of the center of the bed material, thereby achieving the purpose of improving the temperature measurement accuracy, and the external thread 20 can be driven to rotate by rotating the protective tube 11, so that the external thread 20 can be screwed or disengaged from the internal thread 19, and the protective tube 11 and the mounting seat 10 can be conveniently disassembled and assembled, so as to achieve the purpose of facilitating the replacement of the protective tube 11.

Claims

1. A wear protection device for a boiler bed temperature measuring point, characterized in that: It comprises a furnace body (1), two vertical boxes (2) are fixedly mounted on the top of the furnace body (1), a same top box (3) is fixedly mounted on the top of the two vertical boxes (2), a motor (4) is fixedly mounted on the inner wall of the top of the top box (3), and a lifting mechanism is arranged between the top box (3) and the vertical box (2); A temperature measuring mechanism and a protection mechanism are arranged below the top box (3), and seat holes (7) are provided on adjacent sides of the two vertical boxes (2).

2. A wear protection device for boiler bed temperature measuring points according to claim 1, characterized in that: The lifting mechanism comprises two screw rods (5) and two screw rod seats (6); the two screw rods (5) are rotatably mounted on the top inner wall of the top box (3); the motor (4) is located between the two screw rods (5); the bottom end of the screw rod (5) is rotatably connected to the bottom inner wall of the corresponding vertical box (2); a screw rod seat (6) is threadedly sleeved on the screw rod (5); the screw rod seat (6) is slidably connected to the corresponding seat hole (7); and a transmission mechanism is arranged between the screw rod (5) and the output shaft of the motor (4).

3. A wear protection device for boiler bed temperature measuring points according to claim 2, characterized in that: The temperature measuring mechanism comprises a temperature measuring device (8) and a wear-resistant thermocouple (9); the same temperature measuring device (8) is arranged on one side adjacent to the two screw seats (6); and a wear-resistant thermocouple (9) is arranged at the bottom of the temperature measuring device (8).

4. The wear protection device for boiler bed temperature measuring point according to claim 3 is characterized in that: The protective mechanism comprises a mounting seat (10) and a protective tube (11); the mounting seat (10) is fixedly mounted on the bottom of the temperature detector (8); the mounting seat (10) is sleeved on the outside of the wear-resistant thermocouple (9); a protective tube (11) is arranged inside the mounting seat (10); the protective tube (11) is located on the outside of the wear-resistant thermocouple (9); and a screw connection mechanism is arranged between the mounting seat (10) and the protective tube (11).

5. The wear protection device for boiler bed temperature measuring point according to claim 4, characterized in that: The screw connection mechanism comprises an internal thread (19) and an external thread (20); the internal thread (19) is arranged on the inner side of the mounting seat (10); the external thread (20) is arranged on the outer side of the protective tube (11); and the external thread (20) is threadedly connected to the internal thread (19).

6. The wear protection device for boiler bed temperature measuring point according to claim 2, characterized in that: The transmission mechanism comprises two first transmission wheels (14), two second transmission wheels (15) and two transmission belts (16); the two first transmission wheels (14) are fixedly sleeved on the output shaft of the motor (4); the second transmission wheel (15) is fixedly sleeved on the screw rod (5); the second transmission wheel (15) is located in the top box (3); the transmission sleeves on the first transmission wheel (14) and the corresponding second transmission wheel (15) are provided with the same transmission belt (16).

7. The wear protection device for boiler bed temperature measuring point according to claim 2, characterized in that: The top inner wall and the bottom inner wall of the vertical box (2) are fixedly mounted with a same fixing rod (13), the fixing rod (13) is located inside the screw rod (5), and the screw rod seat (6) is slidably sleeved on the fixing rod (13).

8. The wear protection device for boiler bed temperature measuring point according to claim 4, characterized in that: A heat-conducting block (12) is provided on the inner wall of the bottom of the protective tube (11), and the heat-conducting block (12) is compatible with the wear-resistant thermocouple (9).

9. The wear protection device for boiler bed temperature measuring point according to claim 4, characterized in that: A through hole (18) is provided on the top of the furnace body (1), and the protective tube (11) is adapted to fit the through hole (18).

10. The wear protection device for boiler bed temperature measuring point according to claim 3, characterized in that: A display screen (17) is provided on the front side of the temperature measuring device (8).

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