Device for monitoring calorific value of pulverized coal on line

Abstract

The utility model relates to the technical field of pulverized coal calorific value monitoring, in particular to a pulverized coal calorific value online monitoring device which comprises a pulverized coal pipeline, the outer wall of the pulverized coal pipeline is fixedly connected with a first shell, a pulverized coal blocking mechanism is arranged in the first shell, and the outer wall of a monitoring box is fixedly connected with a water outlet pipe. Through cooperation of the first shell and the pulverized coal blocking mechanism, the rotary knob drives the incomplete gear to rotate, the incomplete gear drives the gear to rotate, and the outer wall of the baffle is adjacent to the inner wall of the pulverized coal pipeline, pulverized coal can be accumulated on the baffle in the mode, the pulverized coal can be conveniently fed into the conveying pipeline, and therefore the working efficiency of the online monitoring device is improved; through cooperation of the monitoring box and the cover plate lifting mechanism, the motor drives the worm to rotate, the worm drives the worm gear to rotate, the cover plate is made to be far away from the monitoring box, in this way, an operator can clean the interior of the monitoring box more conveniently, and therefore errors are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder calorific value monitoring, in particular to a device for online monitoring of coal powder calorific value. Background Art

[0002] Coal powder refers to coal with a particle size of less than 0.5 mm. It is the most commonly used additive in cast iron sand. In recent years, foreign countries have mixed coal powder with clay to form a commodity (carbon clay) for the market. The calorific value of coal powder combustion needs to be monitored.

[0003] For example, a device for online monitoring of the calorific value of pulverized coal with the authorization announcement number "CN215523367U" solves the technical problem that the industry cannot monitor pulverized coal in real time. It has technical guidance significance for pulverized coal furnaces, especially for large units with unstable coal quality, and has great application value. However, the device for online monitoring of the calorific value of pulverized coal sends pulverized coal into the monitoring pipeline through an opening and closing valve, but the pulverized coal is constantly falling in the pulverized coal pipeline, and the opening and closing valve cannot suck the required pulverized coal into the monitoring pipeline in a short time, which reduces the working efficiency of the online monitoring device. At the same time, after the combustion of the monitored pulverized coal is completed, although the pulverized coal is processed by scavenging gas, the pulverized coal still cannot be completely discharged in the combustion chamber, which affects the result of the next online monitoring, thereby increasing the error of the online monitoring device. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that coal powder keeps falling in the coal powder pipeline, and the opening and closing valve cannot suck the required coal powder into the monitoring pipeline in a short time, which reduces the working efficiency of the online monitoring device and after the monitored coal powder is burned, although the coal powder is processed by the purge gas, the coal powder still cannot be completely discharged in the combustion chamber, which affects the result of the next online monitoring, thereby increasing the error of the online monitoring device. A device for online monitoring of the calorific value of coal powder is proposed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for online monitoring of the calorific value of pulverized coal is designed, comprising a pulverized coal pipeline, the outer wall of which is fixedly connected to a first shell, a pulverized coal blocking mechanism is provided inside the first shell, the outer wall of the pulverized coal pipeline is fixedly connected to a conveying pipeline, the other end of the conveying pipeline is fixedly connected to a monitoring box, a cover lifting mechanism is provided outside the monitoring box, the upper surface of the monitoring box is fitted with the cover, and the outer wall of the monitoring box is fixedly connected to a water outlet pipe.

[0007] Preferably, the coal powder blocking mechanism includes a knob, the protruding part of the knob is rotatably connected to the first shell through a bearing, the outer wall of the knob is fixedly connected to the incomplete gear, the outer wall of the incomplete gear is rotatably connected to the first shell through a pin shaft, the outer wall of the incomplete gear is meshed with the gear, the outer wall of the gear is fixedly connected to the rotating rod, the outer wall of the rotating rod is wrapped with a torque spring, one end of the torque spring is fixedly connected to the gear, and the other end of the torque spring is fixedly connected to the first shell, the outer wall of the incomplete gear is tightly pressed against the block, and the outer wall of the block is slidably engaged with the first shell through a through hole.

[0008] Preferably, the outer wall of the rotating rod is fixedly connected to the baffle, and the outer wall of the baffle is adjacent to the inner wall of the pulverized coal pipeline.

[0009] Preferably, the cover lifting mechanism includes a second shell, the outer wall of the second shell is fixedly connected to the monitoring box, the interior of the second shell is fixedly connected to the motor through a bracket, the output shaft of the motor is fixedly connected to the worm, the outer wall of the worm is rotatably connected to the second shell through a bearing, the outer wall of the worm is meshed with the worm wheel, the outer wall of the worm wheel is rotatably connected to the second shell through a pin, the outer wall of the worm wheel is fixedly connected to the roller, the outer wall of the roller is rotatably connected to the second shell through a pin and a bracket, the outer wall of the roller is fixedly connected to the slider through a slide groove, and the outer wall of the slider is fixedly connected to the cover through the bracket.

[0010] Preferably, the inner wall of the monitoring box is fixedly connected to the temperature monitor, the inner wall of the monitoring box is fixedly connected to the igniter, and the temperature monitor is electrically connected to an external monitoring device.

[0011] Preferably, the outer wall of the monitoring box is fixedly connected to one end of the water inlet pipe, the other end of the water inlet pipe is fixedly connected to the water storage tank, and the outer wall of the water storage tank is fixedly connected to the monitoring box via a bracket.

[0012] The utility model proposes an online monitoring device for the calorific value of coal powder, which has the beneficial effect that: through the cooperation of the first shell and the coal powder blocking mechanism, the knob drives the incomplete gear to rotate, the incomplete gear drives the gear to rotate, the gear drives the rotating rod to rotate, and at the same time the gear also drives the torque spring to rotate, the rotating rod drives the baffle to rotate, and the outer wall of the baffle is adjacent to the inner wall of the coal powder pipeline. Through the above method, the coal powder can be accumulated on the baffle, which is convenient for sending the coal powder into the conveying pipeline, thereby improving the working efficiency of the online monitoring device.

[0013] Through the cooperation of the monitoring box and the cover lifting mechanism, the motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the roller to rotate, the roller drives the slider to move through the slide groove on the surface, and the slider drives the cover to rise and move the cover away from the monitoring box. The above method allows the operator to clean the inside of the monitoring box more conveniently, thereby avoiding the occurrence of errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A schematic front cross-sectional view of

[0016] Figure 3 for Figure 1 A partial top view cross-sectional schematic diagram of ;

[0017] Figure 4 for Figure 3 A schematic top view of a cross-sectional view of the first shell;

[0018] Figure 5 for Figure 2 A front cross-sectional schematic diagram of the second shell;

[0019] Figure 6 for Figure 5 Schematic top view of the cross section.

[0020] In the figure: 1, coal powder pipeline, 2, first shell, 3, coal powder blocking mechanism, 301, knob, 302, incomplete gear, 303, block, 304, gear, 305, rotating rod, 306, torque spring, 4, baffle, 5, conveying pipeline, 6, monitoring box, 7, cover lifting mechanism, 701, second shell, 702, motor, 703, worm, 704, worm wheel, 705, roller, 706, slider, 8, cover, 9, igniter, 10, water outlet pipe, 11, temperature monitor, 12, water inlet pipe, 13, water storage tank. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] See attached Figure 1-6 : In this embodiment, a device for online monitoring of the calorific value of pulverized coal includes a pulverized coal pipeline 1, the outer wall of the pulverized coal pipeline 1 is fixedly connected to a first shell 2, a pulverized coal blocking mechanism 3 is provided inside the first shell 2, the outer wall of the pulverized coal pipeline 1 is fixedly connected to a conveying pipeline 5, the other end of the conveying pipeline 5 is fixedly connected to a monitoring box 6, a cover lifting mechanism 7 is provided outside the monitoring box 6, the upper surface of the monitoring box 6 is fitted with a cover 8, and the outer wall of the monitoring box 6 is fixedly connected to a water outlet pipe 10;

[0023] The outer wall of the rotating rod 305 is fixedly connected to the baffle 4, the outer wall of the baffle 4 is adjacent to the inner wall of the coal powder pipeline 1, the inner wall of the monitoring box 6 is fixedly connected to the temperature monitor 11, the size of the temperature detector 11 is selected according to actual needs, and it is sufficient to select one that meets the working needs. The inner wall of the monitoring box 6 is fixedly connected to the igniter 9, and the igniter 9 has been described in a device for online monitoring of the calorific value of coal powder with the authorization announcement number "CN215523367U", which is a prior art. The temperature monitor 11 is electrically connected to an external monitoring device, and the temperature detector 11 can transmit the temperature in the monitoring box 6 to an externally connected display screen, which is convenient for the operator to record. The outer wall of the monitoring box 6 is fixedly connected to one end of the water inlet pipe 12, and the other end of the water inlet pipe 12 is fixedly connected to the water storage tank 13, and the outer wall of the water storage tank 13 is fixedly connected to the monitoring box 6 through a bracket.

[0024] See attached Figure 3 and Figure 4 In the present embodiment, a device for online monitoring of the calorific value of pulverized coal is provided. The pulverized coal blocking mechanism 3 includes a knob 301. The protruding portion of the knob 301 is rotatably connected to the first housing 2 through a bearing. The knob 301 rotates on the first housing 2. The outer wall of the knob 301 is fixedly connected to the incomplete gear 302. The knob 301 drives the incomplete gear 302 to rotate. The outer wall of the incomplete gear 302 is rotatably connected to the first housing 2 through a pin shaft. The incomplete gear 302 rotates on the first housing 2. The outer wall of the incomplete gear 302 is meshed and connected with a gear 304. The incomplete gear 302 drives the gear 304 to rotate. The outer wall of the gear 304 is fixedly connected to a rotating rod 305. The gear 304 drives the rotating rod 305 to rotate, and the outer wall of the rotating rod 305 is wound with a torque spring 306. The elastic coefficient of the torque spring 306 is selected according to actual needs, and it can be selected to meet the working needs. One end of the torque spring 306 is fixedly connected to the gear 304, and the gear 304 drives the torque spring 306 to rotate. The other end of the torque spring 306 is fixedly connected to the first shell 2. The torque spring 306 is fixed on the first shell 2. The outer wall of the incomplete gear 302 is tightly pressed against the block 303. The block 303 prevents the incomplete gear 302 from rotating. The outer wall of the block 303 is slidably engaged with the first shell 2 through the through hole, and the block 303 slides on the first shell 2.

[0025] See attached Figure 1 , Figure 2 , Figure 5 and Figure 6In the present embodiment, a device for online monitoring of calorific value of pulverized coal is provided, the cover lifting mechanism 7 comprises a second shell 701, the outer wall of the second shell 701 is fixedly connected to the monitoring box 6, the interior of the second shell 701 is fixedly connected to the motor 702 through a bracket, the second shell 701 fixes the position of the motor 702, the size of the motor 702 is selected according to actual needs, and the size that meets the working needs can be selected, the output shaft of the motor 702 is fixedly connected to the worm 703, the motor 702 drives the worm 703 to rotate, the outer wall of the worm 703 is rotationally connected to the second shell 701 through a bearing, the worm 703 rotates on the second shell 701, and the outer wall of the worm 703 is connected to the worm wheel 704 The worm 703 is meshingly connected, and drives the worm wheel 704 to rotate. The outer wall of the worm wheel 704 is rotationally connected to the second shell 701 through a pin shaft, and the worm wheel 704 rotates on the second shell 701. The outer wall of the worm wheel 704 is fixedly connected to the roller 705, and the worm wheel 704 drives the roller 705 to rotate. The outer wall of the roller 705 is rotationally connected to the second shell 701 through a pin shaft and a bracket, and the roller 705 rotates on the second shell 701. The outer wall of the roller 705 is fixedly connected to the slider 706 through a slide groove, and the roller 705 drives the slider 706 to move through the slide groove on the surface, and the outer wall of the slider 706 is fixedly connected to the cover plate 8 through the bracket, and the slider 706 drives the cover plate 8 to move.

[0026] Working principle:

[0027] When the calorific value of pulverized coal needs to be monitored online:

[0028] Pulverized coal sampling stage;

[0029] First, the operator rotates the knob 301, and the knob 301 drives the incomplete gear 302 to rotate, and the incomplete gear 302 drives the gear 304 to rotate, and the gear 304 drives the rotating rod 305 to rotate. At the same time, the gear 304 also drives the torque spring 306 to rotate, and the rotating rod 305 drives the baffle 4 to rotate. After the outer wall of the baffle 4 is adjacent to the inner wall of the coal powder pipeline 1, the operator stops rotating the knob 310, and then pushes the block 303 into the first shell 2. The block 303 blocks the incomplete gear 302 from rotating, thereby preventing the baffle 4 from rotating. Then, the coal powder is sucked into the monitoring box 6 through the valve on the conveying pipeline 5. After the sampling is completed, the operator pulls out the block 303, and then continues to rotate the knob 301. When the incomplete gear 302 is not engaged with the gear 304, the torque spring 306 drives the gear 304 to reverse, and the baffle 4 is erected in the above manner to prevent the baffle 4 from blocking the coal powder from falling. Then the operator stops rotating the knob 301.

[0030] Pulverized coal calorific value monitoring stage:

[0031] After all the coal powder enters the detection box 6, the external power supply of the igniter 9 is turned on, and the igniter 9 is started. The igniter 9 causes the coal powder to start burning. Then the temperature in the detection box 6 is monitored by the temperature detector 11, and the value is sent to an externally connected display and recorded by the operator.

[0032] Cleaning phase:

[0033] After the combustion is completed, the external power supply of the motor 702 is connected, and the motor 702 is started. The motor 702 drives the worm 703 to rotate, the worm 703 drives the worm wheel 704 to rotate, and the worm wheel 704 drives the roller 705 to rotate. The roller 705 drives the slider 706 to move through the slide groove on the surface, and the slider 706 drives the cover plate 8 to rise, so that the cover plate 8 is away from the monitoring box 6. Then the motor 702 stops working, and the operator cleans the coal powder inside the monitoring box 6 after the combustion is completed. After that, the motor 702 reverses. After the cover plate 8 is reset in the above manner, the water storage tank 13 adds cleaning water to the monitoring box 6 through the water inlet pipe 12. After cleaning is completed, it is discharged from the monitoring box 6 through the outlet pipe 10. The online monitoring of the calorific value of the coal powder is completed in the above manner.

[0034] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A device for online monitoring of calorific value of pulverized coal, comprising a pulverized coal pipeline (1), characterized in that: The outer wall of the pulverized coal pipeline (1) is fixedly connected to the first shell (2), a pulverized coal blocking mechanism (3) is provided inside the first shell (2), the outer wall of the pulverized coal pipeline (1) is fixedly connected to the delivery pipeline (5), the other end of the delivery pipeline (5) is fixedly connected to the monitoring box (6), a cover lifting mechanism (7) is provided outside the monitoring box (6), the upper surface of the monitoring box (6) is in contact with the cover (8), and the outer wall of the monitoring box (6) is fixedly connected to the water outlet pipe (10).

2. The device for online monitoring of calorific value of pulverized coal according to claim 1, characterized in that: The coal powder blocking mechanism (3) comprises a knob (301), a protruding portion of the knob (301) is rotatably connected to the first housing (2) via a bearing, an outer wall of the knob (301) is fixedly connected to an incomplete gear (302), an outer wall of the incomplete gear (302) is rotatably connected to the first housing (2) via a pin shaft, an outer wall of the incomplete gear (302) is meshedly connected to a gear (304), an outer wall of the gear (304) is fixedly connected to a rotating rod (305), a torque spring (306) is wound around the outer wall of the rotating rod (305), one end of the torque spring (306) is fixedly connected to the gear (304), and the other end of the torque spring (306) is fixedly connected to the first housing (2), the outer wall of the incomplete gear (302) is tightly abutted against a clamping block (303), and the outer wall of the clamping block (303) is slidably clamped to the first housing (2) via a through hole.

3. The device for online monitoring of calorific value of pulverized coal according to claim 2, characterized in that: The outer wall of the rotating rod (305) is fixedly connected to the baffle (4), and the outer wall of the baffle (4) is adjacent to the inner wall of the pulverized coal pipeline (1).

4. The device for online monitoring of calorific value of pulverized coal according to claim 1, characterized in that: The cover plate lifting mechanism (7) comprises a second shell (701), the outer wall of the second shell (701) is fixedly connected to the monitoring box (6), the interior of the second shell (701) is fixedly connected to the motor (702) via a bracket, the output shaft of the motor (702) is fixedly connected to the worm (703), the outer wall of the worm (703) is rotationally connected to the second shell (701) via a bearing, the outer wall of the worm (703) is meshingly connected to the worm wheel (704), the outer wall of the worm wheel (704) is rotationally connected to the second shell (701) via a pin shaft, the outer wall of the worm wheel (704) is fixedly connected to a roller (705), the outer wall of the roller (705) is rotationally connected to the second shell (701) via a pin shaft and a bracket, the outer wall of the roller (705) is fixedly connected to a slider (706) via a slide groove, and the outer wall of the slider (706) is fixedly connected to the cover plate (8) via a bracket.

5. The device for online monitoring of calorific value of pulverized coal according to claim 1, characterized in that: The inner wall of the monitoring box (6) is fixedly connected to the temperature monitor (11), the inner wall of the monitoring box (6) is fixedly connected to the igniter (9), and the temperature monitor (11) is electrically connected to an external monitoring device.

6. The device for online monitoring of calorific value of pulverized coal according to claim 1, characterized in that: The outer wall of the monitoring box (6) is fixedly connected to one end of the water inlet pipe (12), the other end of the water inlet pipe (12) is fixedly connected to the water storage tank (13), and the outer wall of the water storage tank (13) is fixedly connected to the monitoring box (6) via a bracket.

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