Coal bunker arching and water coal detection system and method

Abstract

According to the coal bunker arching and water coal detection system and method, a discharging opening is formed in the bottom of a coal bunker, and an outlet baffle is slidably connected to the lower portion of the discharging opening of the coal bunker; the plurality of spoke type pressure sensors are respectively mounted at different positions of the inner bottom of the coal bunker and at different heights of the inner side wall of the coal bunker; the plurality of moisture sensors are divided into two groups, and the two groups of moisture sensors are respectively mounted on two opposite sides of the bottom in the coal bunker; a plurality of weighing sensors are installed on the upper end face of the outlet baffle. The two shifting mechanisms are oppositely arranged on the two opposite sides of the coal bunker, and the sliding plate is arranged in the coal bunker and driven by the supporting oil cylinder; the baffle is driven by a baffle oil cylinder; the controller is connected with the spoke type pressure sensor, the moisture sensor, the weighing sensor, the first electromagnetic directional valve and the second electromagnetic directional valve. The method comprises the following steps: detecting the arching and water-coal phenomena by adopting a multi-sensor technology, and carrying out breaking operation after judging that the arching and water-coal phenomena occur. According to the system and the method, the arching and coal water phenomena can be rapidly and accurately detected, and the arching and coal water phenomena can be rapidly broken.

Description

Technical Field

[0001] The invention belongs to the technical field of coal bunker arching detection, and in particular relates to a coal bunker arching and water-coal detection system and method. Background Art

[0002] Coal bunker arching and water-coal phenomenon are two common problems in the process of coal storage and transportation, which seriously affect the operation efficiency and safety of coal bunkers. Coal bunker arching refers to the accumulation of coal in the coal bunker to form an arched structure. The existence of the arched structure will cause the coal in the coal bunker to be unable to be unloaded smoothly. The existence of the arching problem will seriously affect the normal use of the coal bunker. Therefore, it is necessary to use an effective detection method to timely detect the arching problem. At the same time, it is necessary to provide effective technical means to effectively solve this problem. The water-coal phenomenon refers to the bonding phenomenon formed after coal contacts water in the coal bunker. The water-coal phenomenon will cause the fluidity of the coal material to deteriorate. At the same time, it will cause the density of the coal pile to change, which will affect the reading of the pressure sensor and the accuracy of the sensor detection. So far, although some technologies for detecting the arching and water-coal phenomena in coal bunkers have emerged, they generally have the problems of low detection accuracy and low detection efficiency. For this reason, it is urgent to provide a new type of coal bunker arching and water-coal detection system and method to effectively improve the detection accuracy and detection efficiency, and quickly and efficiently eliminate the arching and water-coal phenomena. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a coal bunker arching and coal water detection system and method. The system has a simple structure, a high degree of automation and a fast response speed. Multiple sensors of different types are arranged at different parts of the coal bunker, and the signal collected by a single type of sensor is no longer used as the basis for analysis and judgment, so that the detection result is more accurate and efficient. At the same time, the arching and coal water phenomena can be eliminated in time after the arching and coal water phenomena are detected. The method has high detection accuracy and fast sensing speed, can quickly and accurately detect the arching and coal water phenomena, and can quickly eliminate the arching and coal water phenomena.

[0004] In order to achieve the above-mentioned object, the present invention provides a coal bunker arching and water-coal detection system, including a coal bunker, an outlet baffle, a spoke-type pressure sensor, a moisture sensor, a weighing sensor, a toggle mechanism, a baffle driving mechanism and a controller;

[0005] A discharge port is provided at the bottom of the coal bunker, and the outlet baffle is slidably connected below the discharge port of the coal bunker to open or close the discharge port of the coal bunker;

[0006] Multiple spoke-type pressure sensors are installed at different positions on the bottom of the coal bunker and at different heights on the inner wall. The multiple spoke-type pressure sensors together form a multi-point pressure monitoring network for real-time collection of pressure signals at different positions inside the coal bunker.

[0007] Multiple moisture sensors are divided into two groups, and the two groups of moisture sensors are installed on opposite sides of the bottom of the coal bunker, respectively, for real-time collection of moisture signals on both sides of the bottom of the coal bunker;

[0008] A plurality of weighing sensors are installed on the upper end surface of the outlet baffle to collect the weight signal carried by the outlet baffle in real time;

[0009] The two toggle mechanisms are relatively arranged on opposite sides of the coal bunker, and the toggle mechanism includes a slide plate bracket, a supporting oil cylinder, a slide plate connecting plate, a slide plate and a pin shaft. The slide plate bracket is located outside the coal bunker and is horizontally fixedly connected to the bottom of the coal bunker. The supporting oil cylinder is vertically arranged, and its cylinder barrel is fixedly connected to the upper end of the slide plate bracket. One end of the slide plate connecting plate is hinged to the end of the supporting piston rod in the supporting oil cylinder. The slide plate is arranged inside the coal bunker, and one end of the slide plate passes through a reserved hole on the side wall of the coal bunker to the outside of the coal bunker, and is connected to the other end of the slide plate connecting plate through a pin shaft; the supporting oil cylinder is connected to the hydraulic pump station through an electromagnetic reversing valve 1, and performs telescopic action through the reversing action of the electromagnetic reversing valve 1;

[0010] The baffle driving mechanism includes a baffle support, a cylinder support and a baffle cylinder. The upper end of the baffle support is fixedly connected to the lower end of the outlet baffle. The cylinder support is distributed opposite to the outlet baffle and is fixedly supported on one side outside the coal bunker. The baffle cylinder is arranged horizontally, and its cylinder barrel is fixedly connected to the cylinder support. The end of the baffle piston rod of the baffle cylinder is fixedly connected to the baffle support. The baffle cylinder is connected to the hydraulic pump station through the electromagnetic reversing valve 2, and performs telescopic action through the reversing action of the electromagnetic reversing valve 2.

[0011] The controller is respectively connected with the spoke-type pressure sensor, the moisture sensor, the weighing sensor, the first electromagnetic reversing valve and the second electromagnetic reversing valve.

[0012] As a preference, the controller is a PLC controller.

[0013] Furthermore, in order to stably support the cylinder support at a certain height, the baffle drive mechanism also includes a grounding plate, the lower end of which is supported on the ground and fixedly connected to the ground by anchor bolts, and the upper end of the grounding plate is fixedly connected to the cylinder support.

[0014] Furthermore, in order to improve the connection strength between the baffle bracket and the outlet baffle, a plurality of reinforcing ribs are connected between the baffle bracket and the outlet baffle.

[0015] Furthermore, in order to improve the connection strength between the slide plate bracket and the coal bunker, a plurality of reinforcing ribs 2 are connected between the slide plate bracket and the coal bunker.

[0016] As a preferred embodiment, the slide plate is closely connected to the inner wall of the coal bunker, and a plurality of shallow grooves are provided on its surface.

[0017] Furthermore, in order to provide effective warning reminders when abnormal situations occur, an alarm module is also included. The alarm module is arranged on the outside of the coal bunker and connected to the controller.

[0018] In the present invention, by installing a plurality of spoke-type pressure sensors at different positions of the bottom of the coal bunker and at different heights of the inner wall, it is convenient to collect pressure signals at different positions of the bottom of the coal bunker and at different heights of the inner wall, and then the controller can obtain pressure data at different positions and different heights. In this way, the controller can judge whether water-coal phenomenon occurs inside the coal bunker according to the pressure data at various locations. By installing a plurality of weighing sensors at the upper end of the outlet baffle, it is convenient to collect the weight signal carried by the outlet baffle in real time, and then the weight data carried by the outlet baffle can be obtained, and then the change of the coal amount in the coal bunker and the weight data can be combined to judge whether the arching phenomenon occurs. By installing a plurality of moisture sensors on the circumference of the bottom of the coal bunker, it is convenient to collect moisture signals at different positions of the bottom of the coal bunker in real time, and then the controller can obtain moisture data at different positions of the bottom of the coal bunker, which is conducive to improving the judgment accuracy of water-coal phenomenon through comprehensive judgment. A slide plate is arranged inside the coal bunker. At the same time, a slide plate cylinder is supported by a slide plate bracket outside the coal bunker, and a slide plate connecting plate hingedly connected to the end of the slide plate piston rod is connected to the slide plate through a pin shaft. The slide plate can be driven to move by the telescopic action of the slide plate piston rod. In this way, the movable slide plate can be used to break the arch and water coal, which is beneficial to ensure the feeding rate of coal powder.

[0019] The system has a simple structure, a high degree of automation and a fast response speed. It sets multiple sensors of different types in different parts of the coal bunker. It no longer uses the signals collected by a single type of sensor as the basis for analysis and judgment, making the detection results more accurate and efficient. At the same time, it can eliminate the arching and water-coal phenomena in time after detecting them.

[0020] The present invention also provides a coal bunker arching and water-coal detection method, which uses a coal bunker arching and water-coal detection system, comprising the following steps:

[0021] Step 1: Use multiple spoke-type pressure sensors to collect pressure signals at different positions on the bottom of the coal bunker and at different heights on the inner wall, and send them to the controller; use multiple moisture sensors to collect moisture signals at different positions on the bottom of the coal bunker, and send them to the controller; use multiple weighing sensors to collect weight signals carried by the outlet baffle in real time, and send them to the controller;

[0022] Step 2: The controller obtains pressure data at different positions of the bottom of the coal bunker and at different heights of the inner wall according to pressure signals at different positions of the bottom of the coal bunker and at different heights of the inner wall, obtains moisture data at different positions of the bottom of the coal bunker on the circumference according to moisture signals at different positions of the bottom of the coal bunker, and obtains weight data carried by the outlet baffle according to weight signals carried by the outlet baffle;

[0023] The weight data at different positions of the bottom of the coal bunker, the pressure data at different heights of the inner wall, and the moisture data at different positions of the bottom are analyzed. When the weight data obtained by any weighing sensor remains stable within a set period of time and does not change with the change of the amount of coal in the coal bunker, it is determined that the coal bunker has an arching phenomenon, and the alarm module is controlled to perform an alarm action; when the pressure data obtained by any pressure sensor is significantly higher than the normal pressure value, the moisture data at different positions of the bottom are analyzed at the same time. When any moisture data also exceeds the normal moisture value, it is determined that the coal bunker has a water-coal phenomenon, and the alarm module is controlled to perform an alarm action;

[0024] At the same time, the controller controls the electromagnetic reversing valve 1 to perform a reversing action, so as to supply oil to the rod chamber or rodless chamber of the support oil cylinder through the action of the electromagnetic reversing valve 1. At the same time, the reversing action frequency of the electromagnetic reversing valve 1 is controlled in combination with the pressure data, weight data and moisture data, so as to change the extension and retraction speed of the support piston rod of the support oil cylinder, thereby driving the slide plate to perform a variable frequency action;

[0025] At the same time, the controller controls the electromagnetic reversing valve 2 to perform reversing action, so as to supply oil to the rod chamber or rodless chamber of the baffle cylinder through the action of the electromagnetic reversing valve 2. At the same time, the valve port opening of the electromagnetic reversing valve 2 is controlled to change in combination with the pressure data, weight data and moisture data, so that the extension and contraction range of the baffle piston rod of the baffle cylinder changes, thereby driving the outlet baffle to change the opening size of the coal bin discharge port.

[0026] The present invention adopts multi-sensor technology to detect arching and water-coal phenomena. It has high detection accuracy and fast sensing speed. It can quickly and accurately detect arching and water-coal phenomena, and can well solve the shortcomings of traditional coal bunker arching and water-coal detection. At the same time, it can automatically control the action of corresponding actuators, and can quickly eliminate arching and water-coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 It is a front view of the present invention;

[0029] Figure 3 is a top view of the present invention;

[0030] Figure 4 It is a side view of the present invention.

[0031] In the figure: 1. coal bunker, 2. spoke-type pressure sensor, 3. pin shaft, 4. skateboard connecting plate, 5. supporting piston rod, 6. supporting oil cylinder, 7. skateboard bracket, 8. moisture sensor, 9. weighing sensor, 10. skateboard, 11. oil cylinder support, 12. baffle oil cylinder, 13. baffle piston rod, 14. baffle bracket, 15. outlet baffle. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] like Figures 1 to 4 As shown, the present invention provides a coal bunker arching and water-coal detection system, including a coal bunker 1, an outlet baffle 15, a spoke-type pressure sensor 2, a moisture sensor 8, a weighing sensor 9, a toggle mechanism, a baffle driving mechanism and a controller;

[0034] A discharge port is provided at the bottom of the coal bunker 1, and the outlet baffle 15 is slidably connected below the discharge port of the coal bunker 1 to open or close the discharge port of the coal bunker 1;

[0035] A plurality of spoke-type pressure sensors 2 are respectively installed at different positions of the bottom of the coal bunker 1 and at different heights of the inner wall. The plurality of spoke-type pressure sensors 2 together form a multi-point pressure monitoring network for real-time collection of pressure signals at different positions inside the coal bunker 1.

[0036] The plurality of moisture sensors 8 are divided into two groups, and the two groups of moisture sensors 8 are respectively installed on opposite sides of the bottom of the coal bunker 1, and are used to collect moisture signals on both sides of the bottom of the coal bunker 1 in real time;

[0037] A plurality of weighing sensors 9 are installed on the upper end surface of the outlet baffle 15 to collect the weight signal carried by the outlet baffle 15 in real time;

[0038] Two toggle mechanisms are relatively arranged on opposite sides of the coal bunker 1, and the toggle mechanism includes a slide plate bracket 7, a supporting cylinder 6, a slide plate connecting plate 4, a slide plate 10 and a pin shaft 3. The slide plate bracket 7 is located on the outside of the coal bunker 1 and is horizontally fixedly connected to the bottom of the coal bunker 1. The supporting cylinder 6 is vertically arranged, and its cylinder barrel is fixedly connected to the upper end of the slide plate bracket 7. One end of the slide plate connecting plate 4 is hinged to the end of the supporting piston rod 5 in the supporting cylinder 6. The slide plate 10 is arranged inside the coal bunker 1, and one end thereof passes through a reserved hole opened on the side wall of the coal bunker 1 to the outside of the coal bunker 1, and is connected to the other end of the slide plate connecting plate 4 through the pin shaft 3; the supporting cylinder 6 is connected to the hydraulic pump station through an electromagnetic reversing valve 1, and performs telescopic action through the reversing action of the electromagnetic reversing valve 1;

[0039] The baffle driving mechanism includes a baffle support 14, a cylinder support 11 and a baffle cylinder 12. The upper end of the baffle support 14 is fixedly connected to the lower end of the outlet baffle 15. The cylinder support 11 and the outlet baffle 15 are distributed relatively to each other and are fixedly supported on one side outside the coal bunker 1. The baffle cylinder 12 is arranged horizontally, and its cylinder barrel part is fixedly connected to the cylinder support 11. The end of the baffle piston rod 13 of the baffle cylinder 12 is fixedly connected to the baffle support 14. The baffle cylinder 12 is connected to the hydraulic pump station through the electromagnetic reversing valve 2, and performs telescopic action through the reversing action of the electromagnetic reversing valve 2.

[0040] The controller is respectively connected to the spoke-type pressure sensor 2, the moisture sensor 8, the weighing sensor 9, the electromagnetic reversing valve 1 and the electromagnetic reversing valve 2.

[0041] As a preference, the controller is a PLC controller.

[0042] In order to stably support the cylinder support at a certain height, the baffle driving mechanism also includes a grounding plate, the lower end of which is supported on the ground and fixedly connected to the ground by anchor bolts, and the upper end of the grounding plate is fixedly connected to the cylinder support 11.

[0043] In order to improve the connection strength between the baffle bracket and the outlet baffle, a plurality of reinforcing ribs are connected between the baffle bracket 14 and the outlet baffle 15 .

[0044] In order to improve the connection strength between the slide plate bracket and the coal bunker, a plurality of reinforcing ribs 2 are connected between the slide plate bracket 7 and the coal bunker 1 .

[0045] As a preferred embodiment, the slide plate 10 is closely connected to the inner wall of the coal bunker 1, and a plurality of shallow grooves are provided on its surface.

[0046] In order to provide effective warning reminders when abnormal situations occur, an alarm module is also included. The alarm module is arranged outside the coal bunker 1 and connected to the controller.

[0047] In the present invention, by installing a plurality of spoke-type pressure sensors at different positions of the bottom of the coal bunker and at different heights of the inner wall, it is convenient to collect pressure signals at different positions of the bottom of the coal bunker and at different heights of the inner wall, and then the controller can obtain pressure data at different positions and different heights. In this way, the controller can judge whether water-coal phenomenon occurs inside the coal bunker according to the pressure data at various locations. By installing a plurality of weighing sensors at the upper end of the outlet baffle, it is convenient to collect the weight signal carried by the outlet baffle in real time, and then the weight data carried by the outlet baffle can be obtained, and then the change of the coal amount in the coal bunker and the weight data can be combined to judge whether the arching phenomenon occurs. By installing a plurality of moisture sensors on the circumference of the bottom of the coal bunker, it is convenient to collect moisture signals at different positions of the bottom of the coal bunker in real time, and then the controller can obtain moisture data at different positions of the bottom of the coal bunker, which is conducive to improving the judgment accuracy of water-coal phenomenon through comprehensive judgment. A slide plate is arranged inside the coal bunker. At the same time, a slide plate cylinder is supported by a slide plate bracket outside the coal bunker, and a slide plate connecting plate hingedly connected to the end of the slide plate piston rod is connected to the slide plate through a pin shaft. The slide plate can be driven to move by the telescopic action of the slide plate piston rod. In this way, the movable slide plate can be used to break the arch and water coal, which is beneficial to ensure the feeding rate of coal powder.

[0048] The system has a simple structure, a high degree of automation and a fast response speed. It sets multiple sensors of different types in different parts of the coal bunker. It no longer uses the signals collected by a single type of sensor as the basis for analysis and judgment, making the detection results more accurate and efficient. At the same time, it can eliminate the arching and water-coal phenomena in time after detecting them.

[0049] The present invention also provides a coal bunker arching and water-coal detection method, which uses a coal bunker arching and water-coal detection system, comprising the following steps:

[0050] Step 1: The pressure signals at different positions of the bottom of the coal bunker 1 and at different heights of the inner wall are collected by multiple spoke-type pressure sensors 2, and sent to the controller; the moisture signals at different positions of the bottom of the coal bunker 1 in the circumferential direction are collected by multiple moisture sensors 8, and sent to the controller; the weight signals carried by the outlet baffle 15 are collected in real time by multiple weighing sensors 9, and sent to the controller;

[0051] Step 2: The controller obtains pressure data at different positions of the bottom of the coal bunker 1 and at different heights of the inner wall according to pressure signals at different positions of the bottom of the coal bunker 1 and at different heights of the inner wall, obtains moisture data at different positions of the bottom of the coal bunker 1 on the circumference according to moisture signals at different positions of the bottom of the coal bunker 1 on the circumference, and obtains weight data carried by the outlet baffle 15 according to weight signals carried by the outlet baffle 15;

[0052] The weight data at different positions of the bottom of the coal bunker 1, the pressure data at different heights of the inner wall, and the moisture data at different positions of the bottom are analyzed. When the weight data obtained by any weighing sensor 9 remains stable within a set period of time and does not change with the change of the amount of coal in the coal bunker 1, it is determined that the coal bunker 1 has an arching phenomenon, and the alarm module is controlled to perform an alarm action; when the pressure data obtained by any pressure sensor 2 is significantly higher than the normal pressure value, the moisture data at different positions of the bottom are analyzed at the same time. When any moisture data also exceeds the normal moisture value, it is determined that the coal bunker 1 has a water-coal phenomenon, and the alarm module is controlled to perform an alarm action;

[0053] At the same time, the controller controls the electromagnetic reversing valve 1 to perform a reversing action, so as to supply oil to the rod chamber or the rodless chamber of the supporting oil cylinder 6 through the action of the electromagnetic reversing valve 1. At the same time, the reversing action frequency of the electromagnetic reversing valve 1 is controlled in combination with the pressure data, weight data and moisture data, so as to change the extension and retraction speed of the supporting piston rod 5 of the supporting oil cylinder 6, thereby driving the slide plate 10 to perform a variable frequency action;

[0054] At the same time, the controller controls the electromagnetic reversing valve 2 to perform a reversing action, so as to supply oil to the rod chamber or the rodless chamber of the baffle cylinder 12 through the action of the electromagnetic reversing valve 2. At the same time, the valve opening of the electromagnetic reversing valve 2 is controlled to change in combination with the pressure data, weight data and moisture data, so that the extension and contraction range of the baffle piston rod 13 of the baffle cylinder 12 changes, thereby driving the outlet baffle 15 to change the opening size of the discharge port of the coal bin 1.

[0055] The present invention adopts multi-sensor technology to detect arching and water-coal phenomena. It has high detection accuracy and fast sensing speed. It can quickly and accurately detect arching and water-coal phenomena, and can well solve the shortcomings of traditional coal bunker arching and water-coal detection. At the same time, it can automatically control the action of corresponding actuators, and can quickly eliminate arching and water-coal.

Claims

1. A coal bunker arching and water-coal detection system, comprising a coal bunker (1) and an outlet baffle (15), wherein a discharge port is provided at the bottom of the coal bunker (1), and the outlet baffle (15) is slidably connected below the discharge port of the coal bunker (1) to open or close the discharge port of the coal bunker (1); characterized in that: It also includes a spoke-type pressure sensor (2), a moisture sensor (8), a weighing sensor (9), a toggle mechanism, a baffle driving mechanism and a controller; A plurality of spoke-type pressure sensors (2) are respectively installed at different positions on the bottom and at different heights on the inner wall of the coal bunker (1); the plurality of spoke-type pressure sensors (2) together form a multi-point pressure monitoring network for collecting pressure signals at different positions inside the coal bunker (1) in real time; The plurality of moisture sensors (8) are divided into two groups, and the two groups of moisture sensors (8) are respectively installed on opposite sides of the bottom of the coal bunker (1) to collect moisture signals on both sides of the bottom of the coal bunker (1) in real time; A plurality of weighing sensors (9) are installed on the upper end surface of the outlet baffle (15) and are used to collect weight signals carried by the outlet baffle (15) in real time; Two toggle mechanisms are relatively arranged on opposite sides of the coal bunker (1), and the toggle mechanism comprises a slide plate bracket (7), a supporting oil cylinder (6), a slide plate connecting plate (4), a slide plate (10) and a pin shaft (3). The slide plate bracket (7) is located outside the coal bunker (1) and is horizontally fixedly connected to the bottom of the coal bunker (1). The supporting oil cylinder (6) is vertically arranged, and its cylinder barrel is fixedly connected to the upper end of the slide plate bracket (7). One end of the slide plate connecting plate (4) is hinged to the end of the supporting piston rod (5) in the supporting oil cylinder (6). The slide plate (10) is arranged inside the coal bunker (1), and one end of the slide plate passes through a reserved hole on the side wall of the coal bunker (1) to the outside of the coal bunker (1), and is connected to the other end of the slide plate connecting plate (4) through the pin shaft (3); the supporting oil cylinder (6) is connected to the hydraulic pump station through an electromagnetic reversing valve 1, and performs telescopic action through the reversing action of the electromagnetic reversing valve 1; The baffle driving mechanism comprises a baffle support (14), a cylinder support (11) and a baffle cylinder (12); the upper end of the baffle support (14) is fixedly connected to the lower end of the outlet baffle (15); the cylinder support (11) and the outlet baffle (15) are arranged opposite to each other and are fixedly supported on one side outside the coal bunker (1); the baffle cylinder (12) is arranged transversely, and its cylinder barrel part is fixedly connected to the cylinder support (11); the end of the baffle piston rod (13) of the baffle cylinder (12) is fixedly connected to the baffle support (14); the baffle cylinder (12) is connected to the hydraulic pump station through the electromagnetic reversing valve 2, and performs telescopic action through the reversing action of the electromagnetic reversing valve 2; The controller is respectively connected to the spoke-type pressure sensor (2), the moisture sensor (8), the weighing sensor (9), the first electromagnetic reversing valve and the second electromagnetic reversing valve.

2. A coal bunker arching and water-coal detection system according to claim 1, characterized in that: The controller is a PLC controller.

3. A coal bunker arching and water-coal detection system according to claim 1 or 2, characterized in that: The baffle driving mechanism also includes a grounding plate, the lower end of which is supported on the ground and fixedly connected to the ground via anchor bolts, and the upper end of which is fixedly connected to the oil cylinder support (11).

4. A coal bunker arching and water-coal detection system according to claim 3, characterized in that: A plurality of reinforcing ribs are connected between the baffle support (14) and the outlet baffle (15).

5. A coal bunker arching and water-coal detection system according to claim 4, characterized in that: A plurality of reinforcing ribs are connected between the slide plate bracket (7) and the coal bin (1).

6. A coal bunker arching and water-coal detection system according to claim 5, characterized in that: The slide plate (10) is closely connected to the inner wall of the coal bin (1), and a plurality of shallow grooves are provided on its surface.

7. A coal bunker arching and water-coal detection system according to claim 6, characterized in that: It also comprises an alarm module, which is arranged outside the coal bunker (1) and connected to the controller.

8. A method for detecting coal bunker arching and water-coal, using a coal bunker arching and water-coal detection system as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: using a plurality of spoke-type pressure sensors (2) to respectively collect pressure signals at different positions of the bottom of the coal bunker (1) and at different heights of the inner wall, and sending the signals to a controller; using a plurality of moisture sensors (8) to respectively collect moisture signals at different positions of the bottom of the coal bunker (1) in a circumferential direction, and sending the signals to a controller; using a plurality of weighing sensors (9) to collect weight signals carried by the outlet baffle (15) in real time, and sending the weight signals to a controller; Step 2: The controller obtains pressure data at different positions of the bottom of the coal bunker (1) and at different heights of the inner wall according to pressure signals at different positions of the bottom of the coal bunker (1) and at different heights of the inner wall, obtains moisture data at different positions of the bottom of the coal bunker (1) on the circumference according to moisture signals at different positions of the bottom of the coal bunker (1), and obtains weight data carried by the outlet baffle (15) according to weight signals carried by the outlet baffle (15); The weight data at different positions of the bottom of the coal bunker (1), the pressure data at different heights of the inner wall, and the moisture data at different positions of the bottom are analyzed. When the weight data obtained by any one of the weighing sensors (9) remains stable within a set period of time and does not change with the change of the amount of coal in the coal bunker (1), it is determined that an arching phenomenon occurs in the coal bunker (1), and the alarm module is controlled to perform an alarm action; when the pressure data obtained by any one of the pressure sensors (2) is significantly higher than the normal pressure value, the moisture data at different positions of the bottom are analyzed at the same time. When any one of the moisture data also exceeds the normal moisture value, it is determined that a water-coal phenomenon occurs in the coal bunker (1), and the alarm module is controlled to perform an alarm action; At the same time, the controller controls the electromagnetic reversing valve 1 to perform a reversing action, so as to supply oil to the rod chamber or the rodless chamber of the support oil cylinder (6) through the action of the electromagnetic reversing valve 1. At the same time, the reversing action frequency of the electromagnetic reversing valve 1 is controlled in combination with the pressure data, the weight data and the moisture data, so as to change the extension and retraction speed of the support piston rod (5) of the support oil cylinder (6), thereby driving the slide plate (10) to perform a variable frequency action; At the same time, the controller controls the electromagnetic reversing valve 2 to perform a reversing action, so as to supply oil to the rod chamber or rodless chamber of the baffle cylinder (12) through the action of the electromagnetic reversing valve 2. At the same time, the valve opening of the electromagnetic reversing valve 2 is controlled to change in combination with the pressure data, weight data and moisture data, so that the extension and contraction range of the baffle piston rod (13) of the baffle cylinder (12) changes, thereby driving the outlet baffle (15) to change the opening size of the coal bin (1) discharge port.

Images