A material accumulation detection device for a blanking tube

Abstract

A kind of material accumulation detection device of blanking tube, including first perception module and second perception module;First perception module is attached and fixed in the first side wall outer surface of blanking tube easy material accumulation position, second perception module is attached and fixed in the outer surface of the second side wall of blanking tube relative to first side wall;First perception module and second perception module all include perception piece, refrigeration piece and temperature sensor;Perception piece is attached to the outer surface of blanking tube, for sensing the heat generated in corresponding position of blanking tube;Refrigeration piece is used to cool perception piece;Temperature sensor is used to detect the temperature change of perception piece.By this, through refrigeration piece, perception piece is cooled, and cooperate temperature sensor, the temperature rise time of perception piece attached at first side wall and the temperature rise time of perception piece attached at second side wall can be measured.The temperature rise time of first side wall is shorter than second side wall by the heat energy of material impact of blanking tube, material temperature itself influence, so whether material blockage occurs can be detected by the measurement and comparison of temperature rise time.

Description

Technical Field

[0001] This utility model relates to the technical field of material feeding tubes, and in particular to a material accumulation detection device for material feeding tubes. Background Technology

[0002] In material conveying systems of industries such as thermal power plants and chemical plants, the feed pipe is a key component connecting upstream and downstream conveying equipment. When conveying viscous materials, material tends to adhere and accumulate on the inner wall of the feed pipe, which can lead to blockages and disrupt normal production. Current technologies often use coal blockage switches or rotary paddle switches as methods for detecting material accumulation, but both methods typically only detect accumulation under severe conditions of accumulation or complete blockage, resulting in significant delays and increased difficulty in subsequent unblocking. Utility Model Content

[0003] The purpose of this invention is to provide a material accumulation detection device for a material discharge pipe, which can detect material accumulation in the early stage of material accumulation in the discharge pipe, and has the advantages of early detection of material accumulation problems and convenient and timely clearing of blockages.

[0004] To achieve the above objectives, the solution of this utility model is: A material accumulation detection device for a material discharge pipe includes a first sensing module and a second sensing module; The first sensing module is attached and fixed to the outer surface of the first sidewall at the location where material easily accumulates in the discharge pipe, and the second sensing module is attached and fixed to the outer surface of the second sidewall of the discharge pipe opposite to the first sidewall. Both the first sensing module and the second sensing module include a sensing element, a cooling element, and a temperature sensor; The sensing element is attached to the outer surface of the discharge tube and is used to sense the heat generated at the corresponding position of the discharge tube. The cooling component is used to cool the sensing component; the temperature sensor is used to detect temperature changes in the sensing component.

[0005] Furthermore, the sensing element is a thermally conductive metal plate.

[0006] Furthermore, the heat-conducting metal plate is made of aluminum or copper.

[0007] Furthermore, the cooling component includes a semiconductor cooling chip and a heat sink; the semiconductor cooling chip is attached to the side of the sensing component away from the feed tube, and the heat sink is attached to the side of the semiconductor cooling chip away from the sensing component.

[0008] Furthermore, thermal grease is applied between the feed tube, sensing element, semiconductor cooling chip, and heat sink.

[0009] Furthermore, it also includes a calibration module; the calibration module includes a sensing element and a temperature sensor; the calibration module is attached and fixed to the outer surface of the material discharge pipe at a position where material will not accumulate.

[0010] Furthermore, it also includes a control module; the control module is electrically connected to the cooling component and the temperature sensor.

[0011] Furthermore, the discharge pipe is a rectangular pipe and includes a vertically arranged feed pipe and an inclined discharge pipe, which are connected to each other; the first sidewall of the discharge pipe is located directly below the feed pipe, and the second sidewall is arranged opposite the first sidewall.

[0012] Furthermore, it also includes a calibration module; the calibration module includes a sensing element and a temperature sensor; the calibration module is attached and fixed to the second side wall of the discharge pipe, and is located above the second sensing module and close to the feed pipe.

[0013] By adopting the above technical solution, the present invention installs the first sensing module on the outer surface of the first sidewall, and then cools the sensing element through a cooling component. In conjunction with a temperature sensor, the heating time of the sensing element attached to the first sidewall after cooling back to the predetermined temperature can be measured. Correspondingly, the second sensing module can measure the heating time of the sensing element attached to the second sidewall after cooling back to the predetermined temperature.

[0014] Since the first sidewall is a part where material easily accumulates, i.e. the part where material impacts during discharge, when there is no blockage, the first sidewall is affected by the impact heat energy of the material in the discharge pipe and the temperature of the material itself, so the heating time is shorter than that of the second sidewall. That is, when the heating time measured by the first sensing module is shorter than that measured by the second sensing module, it can be determined that there is no blockage in the discharge pipe. However, when blockage occurs, the material accumulated on the first sidewall isolates the impact of the material in the discharge pipe and the influence of the material's own temperature, so the heating time is longer than or equal to that of the second sidewall. That is, when the heating time measured by the first sensing module is not shorter than that of the second sidewall, it can be determined that there may be a blockage in the discharge pipe.

[0015] Furthermore, by actively cooling the sensing element using a cooling component and then measuring the heating time, compared to directly obtaining the temperature of the material discharge pipe, artificially creating a larger temperature difference between the material discharge pipe and the environment can improve detection accuracy, reduce errors, and make the detection results more accurate. Neither the first nor the second sensing module comes into contact with the material, so there is no wear problem, and they are external, making maintenance convenient. The measurement time and frequency can be actively set, for example, once every half hour, which can detect and deal with early accumulation, reduce cleaning difficulty, and improve conveying efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2This is a side view of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of an embodiment of the present utility model; Figure 4 This is a structural schematic diagram of an embodiment of the present utility model.

[0017] Labeling explanation: First sensing module 1, Second sensing module 2, Feeding pipe 3, First sidewall 31, Second sidewall 32, Feeding pipe 33, Discharging pipe 34, Sensing element 4, Cooling element 5, Semiconductor cooling chip 51, Heat sink 52, Temperature sensor 6, Calibration module 7. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] like Figures 1 to 4 As shown, the material accumulation detection device for a material discharge pipe in this embodiment includes a first sensing module 1 and a second sensing module 2.

[0020] The first sensing module 1 is attached and fixed to the outer surface of the first side wall 31 at the location where material easily accumulates in the material drop pipe 3, and the second sensing module 2 is attached and fixed to the outer surface of the second side wall 32 of the material drop pipe 3 opposite to the first side wall 31.

[0021] Both the first sensing module 1 and the second sensing module 2 include a sensing element 4, a cooling element 5, and a temperature sensor 6.

[0022] The sensing element 4 is attached to the outer surface of the discharge tube 3 and is used to sense the heat generated at the corresponding position of the discharge tube 3.

[0023] The cooling element 5 is used to cool the sensing element 4; the temperature sensor 6 is used to detect the temperature change of the sensing element 4.

[0024] With this structure, in this embodiment, the first sensing module 1 is installed on the outer surface of the first sidewall 31, and then the sensing element 4 is cooled down by the cooling component 5. In conjunction with the temperature sensor 6, the heating time of the sensing element 4 attached to the first sidewall 31 after cooling down and returning to the predetermined temperature can be measured. Correspondingly, the second sensing module 2 can measure the heating time of the sensing element 4 attached to the second sidewall 32 after cooling down and returning to the predetermined temperature.

[0025] Since the first sidewall 31 is a part that is prone to material accumulation, that is, the part where the material impacts during discharge, when there is no blockage, the first sidewall 31 is affected by the impact heat energy of the material in the discharge pipe 3 and the temperature of the material itself, and the heating time is shorter than that of the second sidewall 32. That is, when the heating time measured by the first sensing module 1 is shorter than the heating time measured by the second sensing module 2, it can be determined that there is no blockage in the discharge pipe 3. However, when a blockage occurs, the material accumulated on the first sidewall 31 isolates the impact of the material in the discharge pipe 3 and the influence of the temperature of the material itself. Therefore, the heating time is longer than or equal to that of the second sidewall 32. That is, when the heating time measured by the first sensing module 1 is not shorter than that of the second sidewall 32, it can be determined that a blockage may occur in the discharge pipe 3, and a corresponding alarm or prompt signal can be issued.

[0026] Furthermore, by actively cooling the sensing element 4 using the cooling component 5 and then measuring the heating time, compared to directly obtaining the temperature of the material drop pipe 3, artificially creating a larger temperature difference between the material drop pipe 3 and the environment can improve detection accuracy, reduce errors, and make the detection results more accurate. At the same time, neither the first sensing module 1 nor the second sensing module 2 comes into contact with the material, so there is no wear problem, and they are external, making maintenance convenient. Moreover, the measurement time and frequency can be actively set, for example, once every half hour, so that early accumulation can be detected and dealt with early, improving conveying efficiency.

[0027] In this embodiment, the sensing element 4 is a heat-conducting metal plate. It can be made of metal materials such as aluminum or copper to have good thermal conductivity.

[0028] In this embodiment, the cooling component 5 may include a thermoelectric cooler 51 and a heat sink 52. The thermoelectric cooler 51 is attached to the side of the sensing component 4 away from the feeding tube 3, and is used to quickly cool the aluminum plate of the sensing component 4. The heat sink 52 is attached to the side of the thermoelectric cooler 51 away from the sensing component 4, and is used to remove heat from the hot surface of the thermoelectric cooler 51 during operation, preventing the thermoelectric cooler 51 from burning out. The heat sink 52 may be equipped with an air-cooling device or a water-cooling device to further improve the cooling effect.

[0029] Furthermore, thermal grease can be applied to the material feeding tube 3, sensing element 4, semiconductor cooling chip 51 and heat sink 52 to improve thermal conductivity.

[0030] In this embodiment, the material accumulation detection device may further include a calibration module 7 and a control module (not shown).

[0031] The calibration module 7 also includes a sensing element 4 and a temperature sensor 6; the calibration module 7 is attached and fixed to the outer surface of the material drop tube 3 at a position where material will not accumulate.

[0032] By setting the calibration module 7, the outer wall of the material drop pipe 3 in the non-material accumulation position can be detected. The calibration module 7 can detect the reference temperature range of the material drop pipe 3 conveying a certain material at a certain ambient temperature, so as to provide the first sensing module 1 and the second sensing module 2 with a reference for measuring the heating time. That is, by detecting the time it takes for the sensing element 4 to heat up from a lower temperature to the reference temperature (i.e., the predetermined temperature range), the corresponding heating time can be obtained.

[0033] The control module is electrically connected to the cooling component 5 and the temperature sensor 6. It can control each cooling component 5 to periodically cool the sensing component 4, then receive the stable temperature measured by the corresponding temperature sensor 6, and make comparison judgments, issue alarms, etc.

[0034] In this embodiment, the material discharge tube 3 is described using a rectangular tube as an example.

[0035] The material discharge pipe 3 may include a vertically arranged feed pipe 33 and an inclined discharge pipe 34, and the feed pipe 33 and the discharge pipe 34 are connected to each other.

[0036] The first sidewall 31 of the discharge pipe 34 is located directly below the feed pipe 33. It is the part where the material impacts after being fed from the feed pipe 33, which is also the part most prone to accumulation. Correspondingly, the second sidewall 32 is located opposite the first sidewall 31.

[0037] The position of the first sidewall 31 in this embodiment is only an example. In reality, the positions of the material drop pipes 3 of different styles that are prone to blockage can be determined by simulation or observation of actual scenarios to determine the sidewall positions with a high probability of accumulation.

[0038] The calibration module 7 can be attached and fixed to the second side wall 32 of the discharge pipe 34, and is located above the second sensing module 2 and close to the feed pipe 33, where accumulation is generally not generated.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0040] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. A material accumulation detection device for a feed pipe, characterized in that: It includes a first sensing module and a second sensing module; The first sensing module is attached and fixed to the outer surface of the first sidewall at the location where material easily accumulates in the discharge pipe, and the second sensing module is attached and fixed to the outer surface of the second sidewall of the discharge pipe opposite to the first sidewall. Both the first sensing module and the second sensing module include a sensing element, a cooling element, and a temperature sensor; The sensing element is attached to the outer surface of the discharge tube and is used to sense the heat generated at the corresponding position of the discharge tube. The cooling component is used to cool the sensing component; the temperature sensor is used to detect temperature changes in the sensing component.

2. The material accumulation detection device for a feed pipe according to claim 1, characterized in that: The sensing element is a heat-conducting metal plate.

3. The material accumulation detection device for a feed pipe according to claim 2, characterized in that: The heat-conducting metal plate is made of aluminum or copper.

4. The material accumulation detection device for a feed pipe according to claim 1, characterized in that: The cooling component includes a semiconductor cooling chip and a heat sink; the semiconductor cooling chip is attached to the side of the sensing component away from the feed tube, and the heat sink is attached to the side of the semiconductor cooling chip away from the sensing component.

5. The material accumulation detection device for a feed pipe according to claim 4, characterized in that: Thermal grease is applied between the feed tube, sensing element, semiconductor cooling chip, and heat sink.

6. The material accumulation detection device for a feed pipe according to claim 1, characterized in that: It also includes a calibration module; the calibration module includes a sensing element and a temperature sensor; the calibration module is attached and fixed to the outer surface of the material drop tube at a position where material will not accumulate.

7. The material accumulation detection device for a feed pipe according to claim 1, characterized in that: It also includes a control module; the control module is electrically connected to the cooling component and the temperature sensor.

8. The material accumulation detection device for a feed pipe according to claim 1, characterized in that: The discharge pipe is a rectangular tube and includes a vertically arranged feed pipe and an inclined discharge pipe, which are connected to each other; the first side wall of the discharge pipe is located directly below the feed pipe, and the second side wall is located opposite the first side wall.

9. The material accumulation detection device for a feed pipe according to claim 8, characterized in that: It also includes a calibration module; the calibration module includes a sensing element and a temperature sensor; the calibration module is attached and fixed to the second side wall of the discharge pipe, and is located above the second sensing module and close to the feed pipe.

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