Safety monitoring mechanism for pulverized coal pipe of coal mill

Abstract

The invention relates to the technical field of pulverized coal pipe monitoring, and discloses a coal mill pulverized coal pipe safety monitoring mechanism which comprises a pulverized coal pipe body, a plurality of mounting frames are arranged at the bottom of the pulverized coal pipe body, a plurality of monitoring assemblies are arranged on the outer side of the pulverized coal pipe body, and a cleaning mechanism is arranged on the rear side of the pulverized coal pipe body. A replacement assembly is arranged at a bent pipe of the pulverized coal pipe main body; and the replacement assembly comprises a square cylinder, the square cylinder is arranged at the elbow of the pulverized coal pipe main body, a baffle is arranged in the square cylinder, a square cover is arranged on the outer side of the baffle, and a micro-motion sensor is arranged at the top of the baffle. Through cooperation of the cleaning mechanism and the pipe bending assembly, efficient cleaning and convenient maintenance are achieved, and the service life is prolonged; 2, multi-sensor omnibearing monitoring is realized, parameters can be accurately mastered and intelligently regulated, and safety and reliability are guaranteed; all the components cooperate to optimize the structure, hidden dangers are reduced through multiple safety design, a foundation is laid for system operation, and benefits are increased.

Description

Technical Field

[0001] The invention relates to the technical field of coal powder pipe monitoring, in particular to a coal powder pipe safety monitoring mechanism for a coal mill. Background Art

[0002] As a key equipment in many industrial fields such as thermal power generation, coal mill plays an indispensable role in energy conversion and material processing. It is responsible for grinding raw coal into fine powder for efficient combustion and utilization in boilers or other processes. With the continuous expansion of industrial scale and continuous advancement of technology, coal mill is developing in the direction of large-scale, intelligent and efficient. The safety, stability and economy of its operation are increasingly valued, and the research and improvement of its related technologies and equipment has also become an important topic in the industrial field.

[0003] The pulverized coal pipe of the coal mill is mainly used to transport the pulverized coal ground by the coal mill to the burner and other equipment. Its working principle is based on pneumatic conveying. It uses primary wind as the power source to form a high-speed airflow in the pipeline. The pulverized coal produced by the coal mill is drawn into the airflow and is suspended and flows rapidly in the pulverized coal pipe with the kinetic energy of the airflow, ensuring the efficient operation of the entire pulverizing and combustion system.

[0004] When transporting coal powder, the pulverized coal pipe of the coal mill is severely impacted by the coal powder at the bends, causing increased wear. This not only reduces the service life of the pulverized coal pipe, but may also cause coal powder leakage, blockage and other faults, affecting the safe and stable operation of the entire coal mill system and increasing maintenance costs and downtime risks. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a safety monitoring mechanism for a pulverized coal pipe of a coal mill, which solves the problem that the pulverized coal pipe bends of the coal mill are subject to impact wear, leakage and blockage, and a sharp increase in operating costs.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a coal pulverizer coal powder pipe safety monitoring mechanism, comprising a coal pulverized pipe body, a plurality of mounting frames are arranged at the bottom of the coal pulverized pipe body, a plurality of monitoring components are arranged on the outside of the coal pulverized pipe body, a cleaning mechanism is arranged at the rear side of the coal pulverized pipe body, and a replacement component is arranged at the bend of the coal pulverized pipe body;

[0007] The replacement component includes a square cylinder, which is arranged at the bend of the coal powder pipe body. A baffle is arranged inside the square cylinder, a square cover is arranged outside the baffle, a micro-motion sensor is arranged on the top of the baffle, a plurality of square grooves are opened on the outside of the square cover, and a snap mechanism is arranged inside the square grooves. The micro-motion sensor transmits the collected data to the central control system.

[0008] Preferably, the cleaning mechanism includes a fixed rod, a motor and a limit plate are respectively provided at both ends of the fixed rod, a sliding sleeve is slidingly provided on the outer side of the fixed rod, a spring 1 is provided between the sliding sleeve and the limit plate, three rotating blocks are equidistantly provided on the outside of the fixed rod, the outer sides of the motor and the sliding sleeve are respectively rotatably connected with rotating plate 1, rotating plate 2 and rotating plate 3, the rotating plates 1 and 2 are both rotatably connected with a cross bar, the rotating plate 3 is rotatably connected to the outside of the rotating plate 1, the two ends of the cross bar are rotatably connected with wheels, a circular plate is provided at the output end of the motor, and a plurality of scrapers are equidistantly provided on the outer sides of the circular plate.

[0009] Preferably, the buckle mechanism comprises a square box, a slider is slidably arranged inside the square box, a spring 2 is arranged between the slider and the inner wall of the square box, and a slide plate and a clamping rod are respectively arranged on the outer side of the slider.

[0010] Preferably, an arc-shaped hole is opened on the outside of the coal powder pipe body, an edge plate is arranged on the outside of the arc-shaped hole, an arc plate is arranged on the outside of the arc-shaped hole, an arc-shaped inner plate is arranged on the inside of the arc plate, the arc-shaped inner plate is engaged with the arc-shaped hole, and the arc plate is connected to the edge plate by multiple bolts.

[0011] Preferably, the monitoring component includes a dust concentration sensor, a flow rate sensor, a temperature sensor and a pressure sensor, and the dust concentration sensor, flow rate sensor, temperature sensor and pressure sensor are respectively arranged on the outside of the coal powder pipe body, and the dust concentration sensor, flow rate sensor, temperature sensor and pressure sensor transmit the collected data to the central control system.

[0012] Preferably, a plurality of installation pipes are equidistantly arranged outside the main body of the pulverized coal pipe, and isolation pipes are arranged between the installation pipes.

[0013] Preferably, a plurality of sealing rings are arranged on the outer side of the baffle, the sealing rings are distributed at equal intervals, and the sealing rings are all in contact with the inner wall of the square tube.

[0014] Preferably, the inner wall of the square tube is provided with a plurality of cylindrical holes, and the clamping rods are all engaged with the corresponding cylindrical holes.

[0015] Preferably, the central control system includes:

[0016] Monitoring module: It is used to transmit the data collected by the dust concentration sensor, flow rate sensor, temperature sensor, pressure sensor and micro-motion sensor to the central control system.

[0017] The present invention provides a coal mill pulverized coal pipe safety monitoring mechanism, which has the following beneficial effects:

[0018] 1. The present invention has an ingenious cleaning mechanism design. The motor drives the scraper for cleaning. The rotating block cooperates with the spring and the sliding sleeve to make the device adapt to different pipe diameters. The self-driven wheels help to move flexibly in the pipe to achieve efficient and comprehensive cleaning. At the same time, the replacement of components at the bend is convenient for maintenance and repair of key parts. The arc-shaped inner plate and arc plate and other structures are convenient for the cleaning mechanism to enter and exit, reducing the difficulty and cost of maintenance and extending the service life of the equipment.

[0019] 2. The present invention monitors the pulverized coal pipe in all directions through dust concentration sensors, flow rate sensors, temperature sensors, pressure sensors and micro-motion sensors, and can accurately grasp the operating parameters and transmit them to the central control system. The system can detect abnormalities in time and make intelligent adjustments to prevent accidents such as spontaneous combustion, blockage and leakage of pulverized coal, ensure safe and stable operation of the system, and improve the overall operational reliability and intelligence level.

[0020] 3. The mounting frame of the present invention ensures that the pulverized coal pipe is installed firmly, the isolation tube protects the sensor circuit from high temperature, the various components work closely together to optimize the overall structure, the sealing structure such as the sealing ring prevents pulverized coal from leaking, the snap mechanism ensures that the square cover is stable, and the multiple safety designs effectively reduce safety hazards, laying a solid foundation for the safe and efficient operation of the coal mill system, and improving production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall stereogram of the present invention;

[0022] Figure 2 It is a top view schematic diagram of the present invention;

[0023] Figure 3 It is a rear view schematic diagram of the present invention;

[0024] Figure 4 It is a schematic diagram of a partial expansion of the square tube of the present invention;

[0025] Figure 5 For the present invention Figure 3 An enlarged schematic diagram of the middle buckle mechanism;

[0026] Figure 6 For the present invention Figure 2 An enlarged schematic diagram of the cleaning mechanism;

[0027] Figure 7 It is a schematic diagram of a partial expansion of the arc plate of the present invention;

[0028] Figure 8 It is a partial cross-sectional schematic diagram of a square tube of the present invention;

[0029] Fig. 9 It is a flow chart of the central control system of the present invention.

[0030] Among them, 1. Coal powder pipe body; 2. Dust concentration sensor; 3. Flow rate sensor; 4. Temperature sensor; 5. Pressure sensor; 6. Cleaning mechanism; 601. Fixed rod; 602. Motor; 603. Sliding sleeve; 604. Limiting plate; 605. Spring 1; 606. Wheel; 607. Crossbar; 608. Rotating block; 609. Circular plate; 6010. Scraper; 6011. Rotating plate 1; 6012. Rotating plate 2; 603. 013, rotating plate three; 7, mounting tube; 8, snap mechanism; 801, square box; 802, slider; 803, spring two; 804, slide plate; 805, clamping rod; 9, arc plate; 10, mounting frame; 11, square tube; 12, square cover; 13, isolation tube; 14, square groove; 15, micro sensor; 16, baffle; 17, arc inner plate; 18, edge plate; 19, cylindrical hole; 20, sealing ring; 21, arc hole. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Please see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 7 With attached Figure 8 The embodiment of the present invention provides a coal pulverizer coal powder pipe safety monitoring mechanism, comprising a coal powder pipe body 1, a plurality of mounting frames 10 are arranged at the bottom of the coal powder pipe body 1, the mounting frames 10 are used to stably fix the coal powder pipe body 1 at a specific installation position, ensure that the coal powder pipe will not be displaced or shaken during operation, and provide a stable basic support for the entire coal powder conveying system, an arc-shaped hole 21 is opened on the outer side of the coal powder pipe body 1, an edge plate 18 is arranged on the outer side of the arc-shaped hole 21, an arc plate 9 is arranged on the outer side of the arc-shaped hole 21, an arc-shaped inner plate 17 is arranged on the inner side of the arc plate 9, the arc-shaped inner plate 17 is engaged with the arc-shaped hole 21, the arc plate 9 is connected to the edge plate 18 by a plurality of bolts, the arc-shaped hole 21 provides a channel for the cleaning mechanism 6 to enter the inside of the coal powder pipe body 1, the edge plate 18 is used as the basic structure for connecting the arc plate 9, and the arc plate 9 plays the role of fixing the arc-shaped inner plate 17, the arc-shaped inner plate 17 closes the arc-shaped hole 21 during normal operation to prevent coal powder leakage, and can be opened during cleaning to facilitate the entry and exit of the cleaning mechanism 6;

[0033] A plurality of mounting tubes 7 are equidistantly arranged outside the main body 1 of the pulverized coal pipe, and an isolation tube 13 is arranged between the mounting tubes 7. The mounting tubes 7 provide a convenient fixed position for the installation of related components such as monitoring components. The isolation tube 13 is used to isolate the sensor circuit to prevent the high temperature generated by the main body 1 of the pulverized coal pipe from damaging the sensor circuit, thereby ensuring the normal operation of the sensor circuit and ensuring the accurate transmission of the monitoring data;

[0034] A plurality of monitoring components are arranged on the outside of the coal powder pipe body 1, and the monitoring components include a dust concentration sensor 2, a flow rate sensor 3, a temperature sensor 4 and a pressure sensor 5. The dust concentration sensor 2, the flow rate sensor 3, the temperature sensor 4 and the pressure sensor 5 are arranged on the outside of the coal powder pipe body 1 respectively. The dust concentration sensor 2, the flow rate sensor 3, the temperature sensor 4 and the pressure sensor 5 transmit the collected data to the central control system. The dust concentration sensor 2 can monitor the concentration of coal powder in the coal powder pipe in real time, so as to timely find the abnormal situation of coal powder concentration and prevent problems such as blockage or incomplete combustion caused by too high or too low concentration; the flow rate sensor 3 can accurately measure the flow velocity of coal powder in the pipe to ensure that the coal powder conveying speed meets the system requirements and ensure the stability of system operation; the temperature sensor 4 is used to monitor the temperature in the coal powder pipe to prevent dangerous situations such as spontaneous combustion of coal powder caused by excessive temperature; the pressure sensor 5 monitors the pressure in the pipe to ensure that the coal powder is conveyed under a suitable pressure environment to avoid pipeline damage or leakage caused by abnormal pressure. After the data collected by these sensors are transmitted to the central control system, they can be used to comprehensively analyze the operation status of the coal powder pipe and make corresponding adjustments in time;

[0035] A replacement component is provided at the bend of the coal powder pipe body 1, and the replacement component includes a square cylinder 11, which is provided at the bend of the coal powder pipe body 1, a baffle 16 is provided inside the square cylinder 11, a square cover 12 is provided on the outside of the baffle 16, a micro-motion sensor 15 is provided on the top of the baffle 16, a plurality of square grooves 14 are provided on the outside of the square cover 12, and a snap mechanism 8 is provided on the inside of the square groove 14, and the snap mechanism 8 includes a square box 801, a slider 802 is slidably provided inside the square box 801, a spring 803 is provided between the slider 802 and the inner wall of the square box 801, a slide plate 804 and a clamping rod 805 are provided on the outside of the slider 802, and the micro-motion sensor 15 transmits the collected data to the central control system, and a plurality of sealing rings 20 are provided on the outside of the baffle 16, and the sealing rings 20 are equidistantly distributed, and the sealing rings 20 are all connected to the inner wall of the square cylinder 11. The inner wall of the square cylinder 11 is provided with a plurality of cylindrical holes 19, and the clamping rods 805 are all engaged with the corresponding cylindrical holes 19; the square cylinder 11 is a special structural design at the bend, which is convenient for replacing or maintaining related parts when problems occur in the bend; the baffle 16 can block the flow of coal powder to a certain extent, which is convenient for checking or operating the inside of the bend, and the micro-sensor 15 on its top is used to monitor the state change of the baffle 16, such as whether the baffle 16 is abnormally opened or closed, and feed back the information to the central control system; the square cover 12 is fixed to the square cylinder 11 by the buckle mechanism 8, and the slider 802 in the buckle mechanism 8 drives the clamping rod 805 to engage with the cylindrical hole 19 under the action of the spring 803, so as to realize the fastening of the square cover 12, and at the same time, the slide plate 804 can facilitate the operation of the clamping rod 805, and the sealing ring 20 ensures the sealing performance between the baffle 16 and the square cylinder 11 to prevent coal powder leakage.

[0036] Please see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 With attached Figure 6A cleaning mechanism 6 is arranged at the rear side of the coal powder pipe body 1, and the cleaning mechanism 6 comprises a fixed rod 601, and a motor 602 and a limit plate 604 are arranged at both ends of the fixed rod 601, a sliding sleeve 603 is slidably arranged on the outer side of the fixed rod 601, and a spring 605 is arranged between the sliding sleeve 603 and the limit plate 604, and three rotating blocks 608 are arranged at equal distances on the outer sides of the fixed rod 601, the motor 602 and the sliding sleeve 603, and the outer sides of the rotating blocks 608 are respectively rotated to connect A rotating plate 1 6011, a rotating plate 2 6012 and a rotating plate 3 6013 are connected, the rotating plate 1 6011 and the rotating plate 2 6012 are both rotatably connected to a cross bar 607, the rotating plate 3 6013 is rotatably connected to the outside of the rotating plate 1 6011, both ends of the cross bar 607 are rotatably connected to wheels 606 and the wheels 606 are self-driven, an annular plate 609 is provided at the output end of the motor 602, and multiple scrapers 6010 are equidistantly provided on the outside of the annular plate 609; The fixed rod 601 provides a support frame for the entire cleaning mechanism 6. The motor 602 serves as a power source to drive the annular plate 609 to rotate, so that the scraper 6010 scrapes and cleans the inner wall of the coal powder pipe; the limit plate 604 cooperates with the sleeve 603, and under the action of the spring 1 605, the movement of the cleaning mechanism 6 in the coal powder pipe has elastic buffering ability, which can effectively avoid hard collision; the rotating block 608 serves as a connecting hub, driving the rotating plate 1 6011, the rotating plate 2 6012 and the rotating plate 3 6013 to rotate. This rotation action cooperates with the spring 1 605 and the sleeve 603, which can make the device adapt to coal powder pipes of different diameters, and ensure that the cleaning mechanism 6 can operate stably and carry out efficient cleaning work in coal powder pipes of different specifications, and the self-driven wheels 606 provide power for the movement of the cleaning mechanism 6 in the pipe, so that it can flexibly shuttle in the coal powder pipe, and realize comprehensive and effective cleaning operations inside the coal powder pipe.

[0037] Please see attached Fig. 9 The central control system includes: a monitoring module: which is used to transmit the data collected by the dust concentration sensor 2, the flow velocity sensor 3, the temperature sensor 4, the pressure sensor 5 and the micro-motion sensor 15 to the central control system. The monitoring module is an important part of the central control system. It can centrally receive data from various sensors and integrate the scattered information so that the central control system can conduct comprehensive analysis, processing and judgment on these data, so as to fully grasp the operation status of the pulverized coal pipe, timely discover potential safety hazards or operation abnormalities, and make corresponding control instructions or alarm prompts according to preset programs or strategies to ensure the safe, stable and efficient operation of the entire coal mill pulverized coal pipe system.

[0038] Working principle: During the operation of the coal mill pulverized coal pipe safety monitoring mechanism, various sensors work together. The dust concentration sensor 2 accurately detects the concentration of coal powder in the pulverized coal pipe body 1, the flow rate sensor 3 closely monitors the flow rate of coal powder, the temperature sensor 4 senses the temperature change in the pipe in real time, and the pressure sensor 5 accurately measures the pressure in the pipe. The micro-motion sensor 15 set on the top of the baffle 16 focuses on monitoring the subtle state changes of the baffle 16. They all quickly and accurately transmit the rich data collected to the monitoring module of the central control system, so that the system can fully grasp the operating status of the pulverized coal pipe;

[0039] When cleaning is required, the arc-shaped inner plate 17 must be operated first. The arc-shaped inner plate 17 is fixed to the arc-shaped hole 21 by bolts connected to the arc plate 9 and the edge plate 18. Before the cleaning work is carried out, the bolts must be loosened to open the arc-shaped inner plate 17, thereby creating a channel for the cleaning mechanism 6 to smoothly enter the inside of the coal powder pipe body 1. The cleaning mechanism 6 has a sophisticated structure and operating mechanism. After the motor 602 is started, its output end drives the annular plate 609 to start to rotate stably and continuously, and the scraper 6010 firmly connected to it immediately makes a circular motion around the center of the circle to perform a preliminary scraping action on the accumulated powder on the inner wall of the coal powder pipe. At the same time, the sliding sleeve 603 can slide back and forth smoothly on the fixed rod 601, and under the elastic tension of the spring 605 or Under the action of thrust, it cooperates with the fixed rod 601 and the motor 602 to maintain a dynamic balance and motion state. The fixed rod 601, the motor 602 and the rotating blocks 608 equidistantly distributed outside the sliding sleeve 603 are like joints, which respectively drive the rotating plate 1 6011, the rotating plate 2 6012 and the rotating plate 3 6013 to rotate and interact with each other in an orderly manner. The rotating plate 1 6011 and the rotating plate 2 6012 are both rotatably connected with the cross bar 607, and the rotating plate 3 6013 is connected to the outside of the rotating plate 1 6011. The wheels 606 installed at both ends of the cross bar 607 roll forward on the track in the coal powder pipe, realizing the all-round and efficient mobile cleaning operation of the cleaning mechanism 6 in the coal powder pipe, completely removing the coal powder accumulated in the pipe, and ensuring the unobstructed flow of the coal powder pipe.

[0040] At the bend of the coal powder pipe body 1, the square cylinder 11 is precisely set at the bend, and the multiple sealing rings 20 carefully installed on the outside of the baffle 16 are tightly fitted to the inner wall of the square cylinder 11, forming a reliable sealing defense line, effectively preventing coal powder leakage and external impurities from invading. The micro-motion sensor 15 always monitors any state changes of the baffle 16. Once an abnormal situation occurs, it can timely feedback the signal to the central control system. The square cover 12 is firmly fixedly connected with the square cylinder 11 through the buckle mechanism 8. The square box 801 in the buckle mechanism 8 and the slider 802 in the square box 801 can flexibly drive the slide plate 804 and the clamping rod 805 to perform corresponding displacement movements under the elastic force of the spring 2 803, so that the clamping rod 805 is accurately engaged with the cylindrical hole 19 pre-set on the inner wall of the square cylinder 11, thereby ensuring that the square cover 12 can remain stable and firm under various complex working conditions, providing solid protection for the structural integrity and safety of the bend.

[0041] Since the pulverized coal pipe body 1 will generate a relatively high temperature during operation, and the sensor circuit is more sensitive to temperature, excessively high temperature may cause circuit aging, short circuit and other faults, affecting the normal operation of the sensor and even the operating stability of the entire safety monitoring mechanism. The isolation tube 13 effectively isolates the sensor circuit to form a relatively independent space, thereby blocking the high temperature invasion of the pulverized coal pipe body 1 and ensuring that the sensor circuit can operate stably under a suitable temperature environment, thereby ensuring the safe and stable operation of the entire mechanism, enabling it to continuously and effectively monitor, clean and perform other maintenance work on the pulverized coal pipe, maintain the pulverized coal pipe in good normal working conditions, and lay a solid foundation for the efficient and safe operation of the coal mill.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal pulverizer coal powder pipe safety monitoring mechanism, comprising a coal pulverized pipe body (1), characterized in that: A plurality of mounting frames (10) are arranged at the bottom of the pulverized coal pipe body (1), a plurality of monitoring components are arranged on the outside of the pulverized coal pipe body (1), a cleaning mechanism (6) is arranged on the rear side of the pulverized coal pipe body (1), and a replacement component is arranged at the bend of the pulverized coal pipe body (1); The replacement assembly comprises a square cylinder (11), the square cylinder (11) being arranged at the bend of the coal powder pipe body (1), a baffle (16) being arranged inside the square cylinder (11), a square cover (12) being arranged outside the baffle (16), a micro-motion sensor (15) being arranged on the top of the baffle (16), a plurality of square grooves (14) being arranged outside the square cover (12), buckle mechanisms (8) being arranged inside the square grooves (14), and the micro-motion sensor (15) transmitting the collected data to a central control system.

2. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: The cleaning mechanism (6) comprises a fixed rod (601), and a motor (602) and a limit plate (604) are respectively arranged at both ends of the fixed rod (601). A sliding sleeve (603) is slidably arranged on the outer side of the fixed rod (601), and a spring (605) is arranged between the sliding sleeve (603) and the limit plate (604). Three rotating blocks (608) are equidistantly arranged on the outer sides of the fixed rod (601), the motor (602) and the sliding sleeve (603), and the outer sides of the rotating blocks (608) are rotatably connected to the outer sides of the rotating blocks (608). A rotating plate 1 (6011), a rotating plate 2 (6012) and a rotating plate 3 (6013), wherein the rotating plate 1 (6011) and the rotating plate 2 (6012) are both rotatably connected to a cross bar (607), and the rotating plate 3 (6013) is rotatably connected to the outside of the rotating plate 1 (6011), and both ends of the cross bar (607) are rotatably connected to wheels (606), and an annular plate (609) is provided at the output end of the motor (602), and a plurality of scrapers (6010) are equidistantly provided on the outside of the annular plate (609).

3. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: The buckle mechanism (8) comprises a square box (801), wherein a slider (802) is slidably arranged inside the square box (801), a spring 2 (803) is arranged between the slider (802) and the inner wall of the square box (801), and a slide plate (804) and a clamping rod (805) are respectively arranged on the outer side of the slider (802).

4. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: An arc-shaped hole (21) is provided on the outside of the coal powder pipe body (1), an edge plate (18) is provided on the outside of the arc-shaped hole (21), an arc plate (9) is provided on the outside of the arc-shaped hole (21), an arc-shaped inner plate (17) is provided on the inside of the arc plate (9), the arc-shaped inner plate (17) is engaged with the arc-shaped hole (21), and the arc plate (9) is connected to the edge plate (18) by a plurality of bolts.

5. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: The monitoring component comprises a dust concentration sensor (2), a flow rate sensor (3), a temperature sensor (4) and a pressure sensor (5); the dust concentration sensor (2), the flow rate sensor (3), the temperature sensor (4) and the pressure sensor (5) are respectively arranged on the outside of the pulverized coal pipe body (1); the dust concentration sensor (2), the flow rate sensor (3), the temperature sensor (4) and the pressure sensor (5) transmit the collected data to a central control system.

6. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: A plurality of installation pipes (7) are arranged at equal intervals on the outside of the coal powder pipe body (1), and isolation pipes (13) are arranged between the installation pipes (7).

7. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: A plurality of sealing rings (20) are arranged on the outer side of the baffle (16), the sealing rings (20) are distributed at equal intervals, and the sealing rings (20) are all in contact with the inner wall of the square tube (11).

8. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 3, characterized in that: The inner wall of the square tube (11) is provided with a plurality of cylindrical holes (19), and the clamping rods (805) are all engaged with the corresponding cylindrical holes (19).

9. A coal mill pulverized coal pipe safety monitoring mechanism according to claim 1, characterized in that: The central control system comprises: Monitoring module: It is used to transmit the data collected by the dust concentration sensor (2), the flow rate sensor (3), the temperature sensor (4), the pressure sensor (5) and the micro-motion sensor (15) to the central control system.

Images