An automatic anti-blocking device for a blanking pipe and its control method

Abstract

This application relates to the technical field of preventing blockage of the blanking pipe, in particular to an automatic anti-blocking device for the blanking pipe and its control method. It includes: a coal flow detection unit arranged inside the blanking pipe, which is used to judge whether there is coal flow in the blanking pipe; a monitoring unit including multiple monitoring modules, the monitoring modules are arranged at the monitoring points inside the blanking pipe, and the monitoring modules are used to collect the coal flow parameters of the monitoring points; a vibration unit arranged on the blanking pipe; a central control unit connected to the coal flow detection unit, the monitoring unit and the vibration unit through wires, and the central control unit is used to set the working parameters of the vibration unit; when there is coal flow and no coal blockage, it generates a signal to start the vibrator and enters an intermittent cyclic vibration state, and the adhesion on the overflow surface in the blanking pipe is continuously removed during continuous vibration. When there is an accidental coal blockage, it generates a signal to start continuous vibration, and the anti-blocking machine vibrates continuously until the coal blockage situation is eliminated, thus effectively solving the problem of coal blockage in the blanking pipe.

Description

Technical Field

[0001] This application relates to the technical field of preventing blockage of blanking pipes, and particularly to an automatic blanking pipe anti-blocking device and its control method. Background Art

[0002] In thermal power plants and the chemical industry, the transportation of materials is mostly by belt conveyors. In the entire transportation system, multiple and multi-stage conveyors are connected and operated. When the conveyor needs to be replaced or the direction needs to be changed in the transportation system, a transfer station needs to be set up, that is, the upper-level conveyor ends here, and the materials of the upper level are transferred to the lower-level conveying equipment through transfer equipment. Specifically: the driving roller of the upper-level conveyor drives the materials on the conveyor belt, and through the head blanking hopper, three-way baffle, blanking pipe, buffer air-lock, and guiding chute, it enters any one of the lower-level conveyors A or B. When the materials on the upper-level conveyor are transferred to the lower level, they have to pass through the blanking pipe. Since the blanking pipe is generally installed obliquely, when transporting wet materials, the materials are easily adhered to the inside of the blanking pipe and cause blockage.

[0003] Existing technologies: First, after discovering coal blockage, manual blockage removal or manual activation of blockage removal equipment is often carried out. However, when it is discovered, a large amount of materials have already accumulated, and the labor intensity of removing the accumulation is large, and the shutdown time is long; second, the system is complex and the cost is high. The existing blockage switch sends a signal to the main control room, and the main control room issues an instruction to start the dredging device for dredging. The system is complex, the blockage switch has poor reliability, high cost, and low efficiency. Fourth, the dredging equipment has poor effect and low efficiency. The existing blanking pipe blockage removal equipment is mostly vibration motor vibration type, pneumatic impact vibration type, scraping type, blowing type, etc. For the vibration and impact type, a vibration device is installed outside the blanking pipe. Since the blanking pipe is approximately a rigid body, the excitation force of the vibration device is small and ineffective, and a large excitation force will cause the weld of the blanking pipe to crack and the infrastructure to be damaged; the scraping type has a complex structure and is easily damaged. Fifth, the coal blockage signal device of the coal dropping cylinder has poor effect and many problems. The coal blockage signal device of the coal dropping cylinder is a protection device for the coal dropping cylinder in the fuel transportation system. When the coal dropping cylinder is blocked, it sends an alarm signal. The existing blockage switches include radio frequency type, induction type, rotary resistance type, mechanical type, etc., and there are problems such as high cost, poor reliability, or environmental pollution. Summary of the Invention

[0004] The purpose of this application is: To solve the above technical problems, this application provides an automatic blanking pipe anti-blocking device and its control method, aiming to effectively solve the problem of coal blockage in the blanking pipe.

[0005] In some embodiments of the present application, by adding an automatic anti-blocking device for the blanking pipe, the coal flow detection unit and the monitoring unit are used to monitor the coal flow state inside the blanking pipe in real time. When there is coal flow and no coal blockage, a start signal is generated to start the vibrator, and it enters the intermittent cyclic vibration state. The adhesion on the overflow surface inside the blanking pipe is continuously removed during continuous vibration. When there is an accidental coal blockage, a start signal for continuous vibration is generated, and the anti-blocking machine vibrates continuously until the coal blockage condition is eliminated, thus effectively solving the problem of coal blockage in the blanking pipe.

[0006] In some embodiments of the present application, an automatic anti-blocking device for a blanking pipe is provided, including:

[0007] A coal flow detection unit, arranged inside the blanking pipe, and the coal flow detection unit is used to judge whether there is coal flow inside the blanking pipe;

[0008] A monitoring unit, including a plurality of monitoring modules, the monitoring modules are arranged at the monitoring points inside the blanking pipe, and the monitoring modules are used to collect the coal flow parameters of the monitoring points;

[0009] A vibration unit, arranged on the blanking pipe;

[0010] A central control unit, connected to the coal flow detection unit, the monitoring unit and the vibration unit through wires, and the central control unit is used to set the working parameters of the vibration unit;

[0011] The vibration unit includes:

[0012] An upper connector, a lower connector, a chute and a vibrator, and the upper connector and the lower connector are connected to the blanking pipe;

[0013] The chute is bonded to the flange of the blanking pipe through a rubber plate;

[0014] The vibrator is arranged in the middle of the chute.

[0015] In some embodiments of the present application, the central control unit includes:

[0016] A first processing module, used to judge the real-time coal flow state according to the coal flow parameters of all monitoring points

[0017] If the real-time coal flow state is a first-level coal flow state, the first processing module generates a first-level control instruction. If the real-time coal flow state is a second-level coal flow state, the first processing module generates a second-level control instruction.

[0018] A second processing module, used to set the cyclic vibration time node and the first-level vibration parameters according to the first-level operation instruction;

[0019] A third processing module, used to set the second-level vibration parameters according to the second-level control instruction.

[0020] In some embodiments of the present application, when the second processing module sets the primary vibration parameters, it includes:

[0021] Obtain the real-time coal flow velocity at each monitoring point at the current vibration time node, and generate a coal flow velocity sequence B, B = (b1, b2... bm), where m is the number of monitoring points, and bi is the coal flow velocity at the i-th monitoring point;

[0022] Generate an operation evaluation value a according to the coal flow velocity sequence B;

[0023] Preset a first operation evaluation value interval (A1, A2), a second operation evaluation value interval (A2, A3), and a third operation evaluation value interval (A3, A4);

[0024] Set the vibration duration d at the current cyclic vibration time node according to the operation evaluation value c;

[0025] If the operation evaluation value c is within the first operation evaluation value interval, set the vibration duration d as the preset first vibration duration d1, i.e., d = d1; if the operation evaluation value c is within the second operation evaluation value interval, set the vibration duration d as the preset second vibration duration d2, i.e., d = d2; if the operation evaluation value c is within the third operation evaluation value interval, set the vibration duration d as the preset third vibration duration d3, i.e., d = d3, and d1 > d2 > d3.

[0026] In some embodiments of the present application, when the second processing module sets the primary vibration parameters, it further includes:

[0027] Set the vibration speed v at the current cyclic vibration time node according to the operation evaluation value c;

[0028] If the operation evaluation value c is within the first operation evaluation value interval, set the vibration speed v as the preset first vibration speed v1, i.e., v = v1; if the operation evaluation value c is within the second operation evaluation value interval, set the vibration speed v as the preset second vibration speed v2, i.e., v = v2;

[0029] If the operation evaluation value c is within the preset third operation evaluation value interval, set the vibration speed v as the preset third vibration speed v3, i.e., v = v3; and v1 > v2 > v3.

[0030] In some embodiments of the present application, when the third processing module sets the secondary vibration parameters according to the secondary control instruction, it includes:

[0031] Generate an initial coal blockage evaluation value h according to the coal flow parameters of all monitoring points, and set the continuous vibration speed h according to the initial coal blockage evaluation value e;

[0032] Set an adjustment time node according to the coal blockage evaluation value e;

[0033] Obtain the coal blockage evaluation value at the current adjustment time node and generate a correction coefficient g between the coal blockage evaluation values at the previous adjustment time node;

[0034] Correct the continuous vibration speed h according to the correction coefficient g;

[0035] Among them, when setting the continuous vibration speed h, it includes:

[0036] Preset the first coal blockage evaluation value interval (E1, E2), the second coal blockage evaluation value interval (E2, E3) and the third coal blockage evaluation value interval (E3, E4);

[0037] If the initial coal blockage evaluation value e is at the first coal blockage evaluation value, set the continuous vibration speed h as the first continuous vibration speed h1, that is, h = h1; if the initial coal blockage evaluation value e is at the second coal blockage evaluation value, set the continuous vibration speed h as the second continuous vibration speed h2, that is, h = h2; if the initial coal blockage evaluation value e is at the third coal blockage evaluation value, set the continuous vibration speed h as the third continuous vibration speed h3, that is, h = h3; among them, h1 < h2 < h3.

[0038] In some embodiments of the present application, a control method for an automatic anti-blocking device of a feeding pipe is provided, including:

[0039] Set multiple monitoring points, and judge the real-time coal flow state according to the coal flow parameters of all monitoring points;

[0040] If the real-time coal flow state is a first-level coal flow state, generate a first-level control instruction, and set the cyclic vibration time node and the first-level vibration parameters according to the first-level operation instruction;

[0041] If the real-time coal flow state is a second-level coal flow state, generate a second-level control instruction, and set the second-level vibration parameters according to the second-level control instruction.

[0042] In some embodiments of the present application, when setting the first-level vibration parameters, it includes:

[0043] Obtain the real-time coal flow speed of each monitoring point at the current vibration time node, and generate a coal flow speed sequence B, B = (b1, b2... bm), where m is the number of monitoring points, and bi is the coal flow speed of the i-th monitoring point;

[0044] Generate an operation evaluation value a according to the coal flow speed sequence B;

[0045] Preset the first operation evaluation value interval (A1, A2), the second operation evaluation value interval (A2, A3) and the third operation evaluation value interval (A3, A4);

[0046] Set the vibration duration d of the current cyclic vibration time node according to the operation evaluation value c;

[0047] If the running evaluation value c is within the first running evaluation value range, set the vibration duration d as the preset first vibration duration d1, i.e., d = d1; if the running evaluation value c is within the second running evaluation value range, set the vibration duration d as the preset second vibration duration d2, i.e., d = d2; if the running evaluation value c is within the third running evaluation value range, set the vibration duration d as the preset third vibration duration d3, i.e., d = d3, and d1 > d2 > d3.

[0048] In some embodiments of the present application, when setting the primary vibration parameters, it further includes:

[0049] Set the vibration speed v at the current cyclic vibration time node according to the running evaluation value c;

[0050] If the running evaluation value c is within the first running evaluation value range, set the vibration speed v as the preset first vibration speed v1, i.e., v = v1; if the running evaluation value c is within the second running evaluation value range, set the vibration speed v as the preset second vibration speed v2, i.e., v = v2;

[0051] If the running evaluation value c is within the preset third running evaluation value range, set the vibration speed v as the preset third vibration speed v3, i.e., v = v3; and v1 > v2 > v3.

[0052] In some embodiments of the present application, when setting the secondary vibration parameters according to the secondary control instruction, it includes:

[0053] Generate an initial coal blockage evaluation value h based on the coal flow parameters of all monitoring points, and set the continuous vibration speed h according to the initial coal blockage evaluation value e;

[0054] Set the adjustment time node according to the coal blockage evaluation value e;

[0055] Obtain the coal blockage evaluation value at the current adjustment time node and the coal blockage evaluation value between the previous adjustment time nodes to generate a correction coefficient g;

[0056] Correct the continuous vibration speed h according to the correction coefficient g.

[0057] In some embodiments of the present application, when setting the continuous vibration speed h, it includes:

[0058] Preset the first coal blockage evaluation value range (E1, E2), the second coal blockage evaluation value range (E2, E3), and the third coal blockage evaluation value range (E3, E4);

[0059] If the initial coal blockage evaluation value e is at the first coal blockage evaluation value, set the continuous vibration speed h to the first continuous vibration speed h1, i.e., h = h1; if the initial coal blockage evaluation value e is at the second coal blockage evaluation value, set the continuous vibration speed h to the second continuous vibration speed h2, i.e., h = h2; if the initial coal blockage evaluation value e is at the third coal blockage evaluation value, set the continuous vibration speed h to the third continuous vibration speed h3, i.e., h = h3; where h1 < h2 < h3.

[0060] Compared with the prior art, the beneficial effects of an automatic anti-blocking device for a blanking pipe and its control method in an embodiment of the present application are as follows:

[0061] By adding an automatic anti-blocking device for the blanking pipe and using the coal flow detection unit and the monitoring unit to monitor the coal flow state inside the blanking pipe in real time, when there is coal flow and no coal blockage, it generates a signal to start the vibrator and enters an intermittent cyclic vibration state. The adhered substances on the flow-through surface inside the blanking pipe are continuously removed during continuous vibration. When there is an accidental coal blockage, it generates a signal to start continuous vibration, and the anti-blocking machine vibrates continuously until the coal blockage condition is eliminated, thereby effectively solving the problem of coal blockage in the blanking pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 is a schematic structural diagram of an automatic anti-blocking device for a blanking pipe in a preferred embodiment of an embodiment of the present application;

[0063] Figure 2 is a schematic flowchart of a control method for an automatic anti-blocking device for a blanking pipe in a preferred embodiment of an embodiment of the present application.

[0064] Coal flow detection unit - 100; Monitoring module - 200; Upper connector - 301; Lower connector - 302; Vibrator - 303; Chute - 304; Conducting wire - 400; Central control unit - 500; Blanking pipe - 600. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0065] The following further describes in detail the specific embodiments of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0066] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0067] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "a plurality of" means two or more.

[0068] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] As Figure 1 shown, an automatic anti-blocking device for a blanking pipe in a preferred embodiment of an embodiment of this application includes:

[0070] A coal flow detection unit 100, which is arranged in the blanking pipe 600, and the coal flow detection unit 100 is used to judge whether there is coal flow in the blanking pipe 600;

[0071] A monitoring unit, which includes a plurality of monitoring modules 200. The monitoring modules 200 are arranged at the monitoring points in the blanking pipe 600, and the monitoring modules 200 are used to collect the coal flow parameters of the monitoring points;

[0072] A vibration unit, which is arranged on the blanking pipe 600;

[0073] A central control unit 500, which is connected to the coal flow detection unit 100, the monitoring unit, and the vibration unit through a wire 400. The central control unit 500 is used to set the working parameters of the vibration unit;

[0074] The vibration unit includes:

[0075] An upper connector 301, a lower connector 302, a chute 304, and an exciter 303. The upper connector 301 and the lower connector 302 are connected to the blanking pipe 600;

[0076] The chute 304 is adhesively bonded to the flange of the blanking pipe 600 through a rubber plate;

[0077] The exciter 303 is arranged in the middle of the chute 304.

[0078] Specifically, the upper connector 301 and the lower connector 302 are the connecting components between the anti-blocking machine and the blanking pipe 600, and each is composed of two angle steels respectively installed on the chute 304 and the blanking pipe 600, as well as flexible upper and lower connecting pieces. The upper and lower connecting pieces are studs passing through the upper and lower angle steels, with external spring parts, which play the role of hanging and supporting the chute 304 and shock absorption. The rubber plate is bonded or crimped on the non-working surface of the chute 304, that is, the outside, and the rubber plate is bonded or crimped around the flange of the blanking pipe 600 to play a sealing role.

[0079] Specifically, the coal flow detection unit 100 is composed of main components such as a fixed rod, a main shaft, a nut, a spring, a spring pin, a microswitch, a bracket, an output wire, a detection plate, and a shaft seat. The fixed rod is composed of two parallel screw rods, and the tail nut is used for installation and fixation. A spring pin is welded at an appropriate position in the middle and front part of the fixed rod, and a bracket is welded near the front part to support the microswitch, and the main shaft is welded horizontally at the front end. The detection plate is a narrow and long wear-resistant steel plate, and a shaft seat is welded under the detection plate. The detection plate is installed on the main shaft through the shaft seat. The upper end of the spring can be hung on the detection plate by drilling holes or welding hooks at the edge of the detection plate, and the lower end is connected to the spring pin. The microswitch is installed on the bracket. When there is no coal flow, the microswitch is close to the detection plate and no signal is output. When there is coal flow, the detection plate generates displacement and leaves the microswitch, and the wire 400 outputs a signal.

[0080] In the preferred embodiment of the present application, the central control unit 500 includes:

[0081] The first processing module is used to judge the real-time coal flow state according to the coal flow parameters of all monitoring points

[0082] If the real-time coal flow state is the first-level coal flow state, the first processing module generates a first-level control instruction. If the real-time coal flow state is the second-level coal flow state, the first processing module generates a second-level control instruction.

[0083] The second processing module is used to set the cyclic vibration time node and the first-level vibration parameters according to the first-level operation instruction;

[0084] The third processing module is used to set the second-level vibration parameters according to the second-level control instruction.

[0085] Specifically, the first-level coal flow state means that there is coal flow in the blanking pipe 600 and there is no coal blockage phenomenon. The second-level coal flow state refers to the state of coal blockage. The first-level operation instruction refers to the intermittent cyclic vibration state, and the second-level operation instruction refers to the continuous and uninterrupted vibration state.

[0086] Specifically, when the second processing module sets the first-level vibration parameters, it includes:

[0087] Obtain the real-time coal flow velocity of each monitoring point at the current vibration time node, and generate a coal flow velocity sequence B, B = (b1, b2…bm), where m is the number of monitoring points, and bi is the coal flow velocity of the i-th monitoring point;

[0088] Generate an operation evaluation value a according to the coal flow velocity sequence B;

[0089] Specifically, set the time interval between adjacent vibration time nodes according to the coal flow rate to be transported. The more coal flow rate to be transported, the shorter the corresponding time interval, and realize the intermittent cyclic vibration state according to the vibration time node.

[0090] Specifically, generate a coal flow velocity sequence B according to the positions and coal flow directions of each monitoring point in the downcomer 600, and generate an operation evaluation value a according to its speed change trend. The faster the speed, the smaller the possibility of sticky pulverized coal in the current downcomer 600, and the higher the corresponding operation evaluation value.

[0091] Preset a first operation evaluation value interval (A1, A2), a second operation evaluation value interval (A2, A3) and a third operation evaluation value interval (A3, A4);

[0092] Set the vibration duration d of the current cyclic vibration time node according to the operation evaluation value c;

[0093] If the operation evaluation value c is in the first operation evaluation value interval, set the vibration duration d as the preset first vibration duration d1, that is, d = d1; if the operation evaluation value c is in the second operation evaluation value interval, set the vibration duration d as the preset second vibration duration d2, that is, d = d2; if the operation evaluation value c is in the third operation evaluation value interval, set the vibration duration d as the preset third vibration duration d3, that is, d = d3, and d1 > d2 > d3.

[0094] Specifically, when the second processing module sets the primary vibration parameters, it also includes:

[0095] Set the vibration speed v of the current cyclic vibration time node according to the operation evaluation value c;

[0096] If the operation evaluation value c is in the first operation evaluation value interval, set the vibration speed v as the preset first vibration speed v1, that is, v = v1; if the operation evaluation value c is in the second operation evaluation value interval, set the vibration speed v as the preset second vibration speed v2, that is, v = v2;

[0097] If the operation evaluation value c is in the preset third operation evaluation value interval, set the vibration speed v as the preset third vibration speed v3, that is, v = v3; and v1 > v2 > v3.

[0098] Specifically, in the above embodiments, an operation evaluation value is generated based on real-time coal flow parameters, so as to dynamically set the vibration speed and vibration duration, thereby continuously removing the adhesion on the overflow surface in the downcomer 600 during vibration and keeping the inside of the downcomer 600 unobstructed.

[0099] In a preferred embodiment of the embodiment of the present application, when the third processing module sets the secondary vibration parameters according to the secondary control instruction, it includes:

[0100] Generating an initial coal blockage evaluation value h based on the coal flow parameters of all monitoring points, and setting a continuous vibration speed h according to the initial coal blockage evaluation value e;

[0101] Setting an adjustment time node according to the coal blockage evaluation value e;

[0102] Obtaining a correction coefficient g by generating the coal blockage evaluation value between the current adjustment time node and the previous adjustment time node;

[0103] Correcting the continuous vibration speed h according to the correction coefficient g;

[0104] Among them, when setting the continuous vibration speed h, it includes:

[0105] Presetting a first coal blockage evaluation value interval (E1, E2), a second coal blockage evaluation value interval (E2, E3), and a third coal blockage evaluation value interval (E3, E4);

[0106] If the initial coal blockage evaluation value e is within the first coal blockage evaluation value, setting the continuous vibration speed h as the first continuous vibration speed h1, that is, h = h1; if the initial coal blockage evaluation value e is within the second coal blockage evaluation value, setting the continuous vibration speed h as the second continuous vibration speed h2, that is, h = h2; if the initial coal blockage evaluation value e is within the third coal blockage evaluation value, setting the continuous vibration speed h as the third continuous vibration speed h3, that is, h = h3; where h1 < h2 < h3.

[0107] Specifically, when in a coal blockage state, start the continuous vibration mode, judge the coal blockage length according to the real-time coal flow data of each monitoring point, generate a coal blockage evaluation value e according to the coal blockage length, the longer the coal blockage length, the greater the corresponding coal blockage evaluation value, and set multiple adjustment time nodes, update the coal blockage length and the coal blockage evaluation value e according to the adjustment time node, and if the length increases, increase the vibration force, so as to quickly eliminate the coal blockage problem and ensure the smooth operation inside the downcomer 600.

[0108] As Figure 2 shown, based on another preferred embodiment of an automatic anti-blocking device for a downcomer in any of the above preferred embodiments, in this preferred embodiment, a control method for an automatic anti-blocking device for a downcomer is provided, including:

[0109] S101: Set multiple monitoring points and determine the real-time coal flow status based on the coal flow parameters of all monitoring points;

[0110] S102: If the real-time coal flow status is at the first-level coal flow status, generate a first-level control instruction, and set the cyclic vibration time node and first-level vibration parameters according to the first-level operation instruction;

[0111] S103: If the real-time coal flow status is at the second-level coal flow status, generate a second-level control instruction and set the second-level vibration parameters according to the second-level control instruction.

[0112] Specifically, it is characterized in that when setting the first-level vibration parameters, it includes:

[0113] Obtain the real-time coal flow velocity of each monitoring point at the current vibration time node, and generate a coal flow velocity sequence B, B = (b1, b2... bm), where m is the number of monitoring points, and bi is the coal flow velocity of the i-th monitoring point;

[0114] Generate an operation evaluation value a according to the coal flow velocity sequence B;

[0115] Preset a first operation evaluation value interval (A1, A2), a second operation evaluation value interval (A2, A3), and a third operation evaluation value interval (A3, A4);

[0116] Set the vibration duration d of the current cyclic vibration time node according to the operation evaluation value c;

[0117] If the operation evaluation value c is in the first operation evaluation value interval, set the vibration duration d as the preset first vibration duration d1, that is, d = d1; if the operation evaluation value c is in the second operation evaluation value interval, set the vibration duration d as the preset second vibration duration d2, that is, d = d2; if the operation evaluation value c is in the third operation evaluation value interval, set the vibration duration d as the preset third vibration duration d3, that is, d = d3, and d1 > d2 > d3.

[0118] Specifically, when setting the first-level vibration parameters, it also includes:

[0119] Set the vibration speed v of the current cyclic vibration time node according to the operation evaluation value c;

[0120] If the operation evaluation value c is in the first operation evaluation value interval, set the vibration speed v as the preset first vibration speed v1, that is, v = v1; if the operation evaluation value c is in the second operation evaluation value interval, set the vibration speed v as the preset second vibration speed v2, that is, v = v2;

[0121] If the operation evaluation value c is in the preset third operation evaluation value interval, set the vibration speed v as the preset third vibration speed v3, that is, v = v3; and v1 > v2 > v3.

[0122] In the preferred embodiment of the embodiment of the present application, when setting the secondary vibration parameters according to the secondary control instruction, it includes:

[0123] Generating an initial coal blockage evaluation value h based on the coal flow parameters of all monitoring points, and setting a continuous vibration speed h according to the initial coal blockage evaluation value e;

[0124] Setting an adjustment time node according to the coal blockage evaluation value e;

[0125] Obtaining a correction coefficient g by generating the coal blockage evaluation value between the coal blockage evaluation value at the current adjustment time node and the coal blockage evaluation value at the previous adjustment time node;

[0126] Correcting the continuous vibration speed h according to the correction coefficient g.

[0127] Specifically, when setting the continuous vibration speed h, it includes:

[0128] Presetting a first coal blockage evaluation value interval (E1, E2), a second coal blockage evaluation value interval (E2, E3), and a third coal blockage evaluation value interval (E3, E4);

[0129] If the initial coal blockage evaluation value e is within the first coal blockage evaluation value, set the continuous vibration speed h as the first continuous vibration speed h1, that is, h = h1; if the initial coal blockage evaluation value e is within the second coal blockage evaluation value, set the continuous vibration speed h as the second continuous vibration speed h2, that is, h = h2; if the initial coal blockage evaluation value e is within the third coal blockage evaluation value, set the continuous vibration speed h as the third continuous vibration speed h3, that is, h = h3; where h1 < h2 < h3.

[0130] According to the first concept of the present application, by adding an automatic anti-blocking device for the blanking pipe, using the coal flow detection unit and the monitoring unit to monitor the coal flow state inside the blanking pipe in real time, when there is coal flow and no coal blockage, it generates to start the vibrator to start and enter the intermittent cyclic vibration state, and the adhesion on the overflow surface inside the blanking pipe is continuously removed during continuous vibration. When there is an accidental coal blockage, it generates to start continuous vibration, and the anti-blocking machine vibrates continuously until the coal blockage condition is eliminated, thereby effectively solving the coal blockage problem of the blanking pipe.

[0131] The above is only the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. An automatic anti-blocking device for a blanking pipe, Characterized in that, Comprising: A coal flow detection unit, arranged inside the blanking pipe, and the coal flow detection unit is used to judge whether there is coal flow in the blanking pipe; A monitoring unit, including a plurality of monitoring modules, the monitoring modules are arranged at monitoring points inside the blanking pipe, and the monitoring modules are used to collect coal flow parameters of the monitoring points; A vibration unit, arranged on the blanking pipe; A central control unit, connected to the coal flow detection unit, the monitoring unit and the vibration unit through wires, and the central control unit is used to set the working parameters of the vibration unit; The vibration unit includes: An upper connector, a lower connector, a chute and an exciter, the upper connector and the lower connector are connected to the blanking pipe; The chute is adhesively bonded to the flange of the blanking pipe through a rubber plate; The exciter is arranged in the middle of the chute; The central control unit includes: A first processing module, used to judge the real-time coal flow state according to the coal flow parameters of all monitoring points If the real-time coal flow state is a first-level coal flow state, the first processing module generates a first-level control instruction, and if the real-time coal flow state is a second-level coal flow state, the first processing module generates a second-level control instruction, A second processing module, used to set the cyclic vibration time node and the first-level vibration parameters according to the first-level operation instruction; A third processing module, used to set the second-level vibration parameters according to the second-level control instruction; When the second processing module sets the first-level vibration parameters, it includes: Obtain the real-time coal flow velocity of each monitoring point according to the current vibration time node, and generate a coal flow velocity sequence B, B=(b1, b2…bm), where m is the number of monitoring points, and bi is the coal flow velocity of the i-th monitoring point; Generate an operation evaluation value a according to the coal flow velocity sequence B; Preset a first operation evaluation value interval (A1, A2), a second operation evaluation value interval (A2, A3) and a third operation evaluation value interval (A3, A4); Set the vibration duration d of the current cyclic vibration time node according to the operation evaluation value c; If the operation evaluation value c is in the first operation evaluation value interval, set the vibration duration d as the preset first vibration duration d1, that is, d = d1; if the operation evaluation value c is in the second operation evaluation value interval, set the vibration duration d as the preset second vibration duration d2, that is, d = d2; if the operation evaluation value c is in the third operation evaluation value interval, set the vibration duration d as the preset third vibration duration d3, that is, d = d3, and d1>d2>d3; When the second processing module sets the first-level vibration parameters, it also includes: Set the vibration speed v of the current cyclic vibration time node according to the operation evaluation value c; If the operation evaluation value c is in the first operation evaluation value interval, set the vibration speed v as the preset first vibration speed v1, that is, v = v1; if the operation evaluation value c is in the second operation evaluation value interval, set the vibration speed v as the preset second vibration speed v2, that is, v = v2; If the operation evaluation value c is in the preset third operation evaluation value interval, set the vibration speed v as the preset third vibration speed v3, that is, v = v3; and v1>v2>v3.

2. The automatic anti-blocking device for a blanking pipe according to claim 1, Characterized in that, When the third processing module sets the secondary vibration parameters according to the secondary control instruction, it includes: Generating an initial coal blockage evaluation value h based on the coal flow parameters of all monitoring points, and setting a continuous vibration speed h according to the initial coal blockage evaluation value e; Setting an adjustment time node according to the coal blockage evaluation value e; Obtaining the coal blockage evaluation value at the current adjustment time node and the coal blockage evaluation value between the previous adjustment time nodes to generate a correction coefficient g; Correcting the continuous vibration speed h according to the correction coefficient g; Among them, when setting the continuous vibration speed h, it includes: Presetting a first coal blockage evaluation value interval (E1, E2), a second coal blockage evaluation value interval (E2, E3), and a third coal blockage evaluation value interval (E3, E4); If the initial coal blockage evaluation value e is at the first coal blockage evaluation value, setting the continuous vibration speed h to the first continuous vibration speed h1, that is, h = h1; if the initial coal blockage evaluation value e is at the second coal blockage evaluation value, setting the continuous vibration speed h to the second continuous vibration speed h2, that is, h = h2; if the initial coal blockage evaluation value e is at the third coal blockage evaluation value, setting the continuous vibration speed h to the third continuous vibration speed h3, that is, h = h3; where h1 < h2 < h3.

3. A control method for an automatic anti-blocking device of a feed pipe, which is applied to the automatic anti-blocking device of the feed pipe described in any one of the above claims 1-2, Characterized in that, It includes: Setting a plurality of monitoring points, and judging the real-time coal flow state according to the coal flow parameters of all monitoring points; If the real-time coal flow state is a primary coal flow state, generating a primary control instruction, and setting a cyclic vibration time node and primary vibration parameters according to the primary operation instruction; If the real-time coal flow state is a secondary coal flow state, generating a secondary control instruction, and setting secondary vibration parameters according to the secondary control instruction; When setting the primary vibration parameters, it includes: Obtaining the real-time coal flow speed of each monitoring point at the current vibration time node, and generating a coal flow speed sequence B, B = (b1, b2... bm), where m is the number of monitoring points, and bi is the coal flow speed of the i-th monitoring point; Generating an operation evaluation value a according to the coal flow speed sequence B; Presetting a first operation evaluation value interval (A1, A2), a second operation evaluation value interval (A2, A3), and a third operation evaluation value interval (A3, A4); Setting the vibration duration d of the current cyclic vibration time node according to the operation evaluation value c; If the operation evaluation value c is in the first operation evaluation value interval, setting the vibration duration d to the preset first vibration duration d1, that is, d = d1; if the operation evaluation value c is in the second operation evaluation value interval, setting the vibration duration d to the preset second vibration duration d2, that is, d = d2; if the operation evaluation value c is in the third operation evaluation value interval, setting the vibration duration d to the preset third vibration duration d3, that is, d = d3, and d1 > d2 > d3; When setting the primary vibration parameters, it also includes: Setting the vibration speed v of the current cyclic vibration time node according to the operation evaluation value c; If the running evaluation value c is within the first running evaluation value range, set the vibration speed v to the preset first vibration speed v1, i.e., v = v1; if the running evaluation value c is within the second running evaluation value range, set the vibration speed v to the preset second vibration speed v2, i.e., v = v2; If the running evaluation value c is within the preset third running evaluation value range, set the vibration speed v to the preset third vibration speed v3, i.e., v = v3; and v1 > v2 > v3.

4. The control method for the automatic anti-blocking device of the blanking pipe according to claim 3, characterized in that, when setting the secondary vibration parameters according to the secondary control instruction, it includes: generating an initial coal blockage evaluation value h based on the coal flow parameters of all monitoring points, and setting a continuous vibration speed h according to the initial coal blockage evaluation value e; setting an adjustment time node according to the coal blockage evaluation value e; obtaining a correction coefficient g by generating the coal blockage evaluation value between the coal blockage evaluation value at the current adjustment time node and the coal blockage evaluation value at the previous adjustment time node; correcting the continuous vibration speed h according to the correction coefficient g.

5. The control method for the automatic anti-blocking device of the blanking pipe according to claim 4, characterized in that, when setting the continuous vibration speed h, it includes: presetting a first coal blockage evaluation value range (E1, E2), a second coal blockage evaluation value range (E2, E3), and a third coal blockage evaluation value range (E3, E4); if the initial coal blockage evaluation value e is within the first coal blockage evaluation value, set the continuous vibration speed h to the first continuous vibration speed h1, i.e., h = h1; if the initial coal blockage evaluation value e is within the second coal blockage evaluation value, set the continuous vibration speed h to the second continuous vibration speed h2, i.e., h = h2; if the initial coal blockage evaluation value e is within the third coal blockage evaluation value, set the continuous vibration speed h to the third continuous vibration speed h3, i.e., h = h3; where h1 < h2 < h3.

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