Monitoring device for working state of suction pipe of multifunctional roasting crown block

Abstract

The utility model discloses a working state monitoring device for a material suction pipe of a multifunctional roasting crown block. The working state monitoring device comprises a sound acquisition device and edge computing equipment, the sound acquisition device is mounted on the material suction pipe; the edge computing device is installed in a crown block cab and electrically connected with the sound collecting device. And the sound acquisition device adopts a contact type sound pickup. The material suction pipe does not need to be transformed, installation is easy and convenient, cost is low, real-time monitoring and accurate judgment of the working state of the material suction pipe can be achieved, and a powerful guarantee is provided for stable operation of the multifunctional roasting crown block.

Description

TECHNICAL FIELD

[0001] The utility model relates to a roasting multifunctional crown block technical field, concretely relates to a roasting multifunctional crown block suction pipe working state monitoring device. BACKGROUND

[0002] In the working process of the roasting multifunctional crown block, the main role of the suction pipe is to suck the filling material in the furnace to complete replacement or cleaning, and the stability and efficiency of the working state directly affect the overall operation effect of the roasting multifunctional crown block. When the suction pipe is blocked, the suction efficiency will be significantly reduced, and the operation difficulty and time cost of the crown block will be increased.

[0003] The traditional suction pipe working state monitoring method mainly depends on the ear of the crown block worker to listen to the suction sound to judge. The crown block worker judges whether the blockage occurs by listening to the suction sound with experience. However, this monitoring method has obvious subjectivity and limitations: on the one hand, the experience and judgment of different crown block workers are different, which may affect the accuracy and consistency of the monitoring results; on the other hand, the ear listening method cannot accurately quantify the size of the suction flow, and can only roughly estimate the suction state. In addition, in the harsh environment of high temperature, high dust and high noise, the listening conditions of the crown block worker are limited, which further affects the accuracy and reliability of the monitoring results. SUMMARY

[0004] The utility model aims at solving the defects in the prior art, and provides a roasting multifunctional crown block suction pipe working state monitoring device, which can timely and effectively monitor the suction pipe state.

[0005] In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

[0006] A roasting multifunctional crown block suction pipe working state monitoring device, comprising a sound collecting device and an edge computing device; the sound collecting device is installed on the suction pipe; the edge computing device is installed in the crown block cab and electrically connected with the sound collecting device; the sound collecting device adopts a contact type sounder.

[0007] The utility model collects the working sound of the suction pipe by using the sound collecting device, analyzes the working sound of the suction pipe by using the edge computing device, and accurately judges the working state of the suction pipe: when the suction pipe is in the empty suction state, the sound is similar to the whistling sound of the hair dryer, and the frequency and amplitude are relatively stable; when the filling material rubs and collides with the suction pipe to produce the rustling sound, the sound frequency and amplitude will change with the movement of the filling material; when the filling material is blocked, the inlet is blocked, and the sharp wind sound is produced by inhaling from the small air hole, the frequency is high and the amplitude changes obviously. By analyzing and comparing these sound characteristics, the working state of the suction pipe can be accurately identified.

[0008] In addition, in the suction state, the suction flow rate has a clear correlation with the frequency and amplitude of the sound. When the suction flow rate increases, the amount of filler entering the suction pipe per unit time increases, and the friction and collision between the fillers and between the fillers and the wall of the suction pipe become more frequent, so that the energy proportion of a specific high-frequency band in the sound signal will increase accordingly, and the effective value of the sound amplitude will also increase. Based on this, a quantitative relationship between the suction flow rate and the sound frequency and amplitude characteristic parameters can be established. Thus, the size of the suction flow rate is further determined.

[0009] Meanwhile, the sound collection device uses a contact-type sound pickup, which can more clearly and accurately obtain the sound signal of the suction pipe during operation and reduce the influence of external interference on the monitoring results.

[0010] Further, the above edge computing device includes a computing processing unit and a communication module; the computing processing unit is connected with the sound collection device; the edge computing device is connected with the remote monitoring center through the communication module. The computing processing unit receives and processes the sound signal, and determines the state of the suction pipe based on the sound frequency and amplitude. The communication module can transmit the recognized suction pipe working state and other information to the remote monitoring center through wired or wireless means to realize remote monitoring and management.

[0011] Further, the edge computing device is also provided with an interface integrated with other automation or monitoring systems to realize data interaction and sharing.

[0012] Further, the above sound collection device uses a bone conduction sound pickup and is installed on the outer wall of the suction pipe.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The analysis and determination method based on sound characteristics avoids the subjectivity and limitations of manual determination and can more accurately identify the working state of the suction pipe and quantify the suction flow rate.

[0015] In harsh environments such as high temperature, high dust, and high noise, the sound collection device can still work stably to ensure accurate collection and transmission of the sound signal and improve the reliability of the monitoring results.

[0016] The monitoring device of the utility model can automatically complete the collection, processing, and analysis of the sound signal, reduces manual intervention, and improves work efficiency and automation level.

[0017] Without modifying the suction pipe, only a simple sound pickup and edge computing device need to be installed to realize real-time monitoring function, which reduces the implementation cost.

[0018] The popularization and application of the utility model will help promote the automation and intelligent upgrading of the roasting multifunctional crown block industry, improve overall production efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the utility model;

[0020] In the figure, 1 is a crown block, 2 is a suction pipe, 3 is a cab, 4 is a sound collecting device, 5 is an edge computing device, and 6 is a filling material. DETAILED DESCRIPTION

[0021] In order to make the technical scheme of the utility model more clear and intelligible, the utility model will be further described in detail below in combination with the drawings and examples, and the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.

[0022] The specific implementation of the utility model will be described in detail below in combination with the drawings and examples.

[0023] As Figure 1 shown, a roasting multifunctional crown block suction pipe working state monitoring device, the sound collecting device 4 is fixedly installed on the surface of the suction pipe 2 in a magnetic attraction or punching installation manner, and the collected sound signals are transmitted to the edge computing device 5 through electrical connection.

[0024] Specifically, the sound collecting device 4 can effectively collect the sound signals of the suction pipe 2 under different working states, shield external noise, and send out through a communication circuit; it should be noted that the sound signal transmission of the sound collecting device belongs to the prior art in the field, and the present example does not make too much description, and the contact type sound pickup in the prior art can be adapted to the present embodiment.

[0025] Specifically, the edge computing device 5 is located in the cab 3 of the crown block 1, which is convenient for the operator to view and analyze the results in real time. The edge computing device can use a microprocessor or the like to analyze the sound signals.

[0026] Specifically, after the edge computing device 5 receives the sound signals, the basic characteristics such as the frequency and amplitude of the sound are analyzed. In the test for a specific roasting multifunctional crown block suction pipe, when the sound frequency is mainly concentrated in the 150Hz-350Hz frequency band, and the amplitude fluctuation range is within ±0.08V, it is judged that the suction pipe is in the empty suction state; if the sound frequency is distributed in the 400Hz-1800Hz frequency band, and the amplitude fluctuation range is about ±0.25V, it is judged to be in the suction state; when the frequency is higher than 1600Hz and the amplitude fluctuates between 0.4V and 0.8V, it is determined to be in the blockage state.

[0027] And when the suction state is determined, the edge computing device can further calculate the suction flow percentage. The specific method is as follows:

[0028] In the test, it is found that when the suction flow increases, the energy ratio of the 800-1500 Hz frequency band in the sound signal will increase accordingly, and the sound amplitude effective value will also increase; and when the suction pipe reaches the maximum suction capacity, the energy ratio of the 800-1500 Hz frequency band in the sound signal at this time is P max = 80%, and the sound amplitude effective value is A max = 0.8V. Assuming that the currently collected 800-1500 Hz frequency band energy ratio P and sound amplitude effective value A, by collecting more than 500 groups of different suction flow corresponding to the 800-1500 Hz frequency band energy ratio P and amplitude effective A and the corresponding actual suction flow data, the expression of the suction flow percentage is obtained by least square fitting:

[0029] The suction flow percentage R = 0.6*(P / Pmax)+0.4*(A / Amax)*100%.

[0030] The specific calculation steps of the suction flow percentage are as follows:

[0031] The collected sound signal is subjected to fast Fourier transform to calculate the energy ratio P of the 800-1500 Hz frequency band. For example, at a certain time, the energy ratio P of the frequency band is calculated to be P = 40%.

[0032] The amplitude effective value A of the sound signal is measured, and the amplitude effective value A measured at this time is A = 0.4V.

[0033] Substituting P = 40%, Pmax = 80%, A = 0.4V, and Amax = 0.8V into the above formula, the suction flow percentage is calculated to be 50%.

[0034] It should be noted that the above parameters and corresponding expressions are based on the specific test this time, and the related parameters and suction flow calculation formula may be different under different equipment and working conditions.

[0035] Specifically, the edge computing device 5 further includes a communication module. Once it is identified that the suction pipe is in an abnormal state (such as blocked material), or the suction flow percentage is lower than the preset threshold, the edge computing device will immediately send the relevant information to the remote monitoring center server through the network.

Claims

1. A kind of baking multifunctional overhead crane suction pipe working condition monitoring device, it is characterized by, The roasting multifunctional crown block suction pipe working state monitoring device comprises a sound collecting device and an edge computing device; the sound collecting device is installed on the suction pipe; the edge computing device is installed in the crown block cab and is electrically connected with the sound collecting device; the sound collecting device adopts a contact type sound pickup.

2. The baking multifunctional bridge suction pipe working state monitoring device according to claim 1, characterized in that, The edge computing device comprises a computing processing unit and a communication module; the computing processing unit is connected with the sound collecting device; the edge computing device is connected with a remote monitoring center through the communication module.

3. The roasting multifunctional bridge ladle suction pipe working state monitoring device according to claim 2, characterized in that, The edge computing device is further provided with an interface integrated with other automatic or monitoring systems.

4. The baking multifunctional bridge suction pipe working state monitoring device according to claim 3, characterized in that, The sound collecting device adopts a bone conduction sound pickup.

5. The baking multifunctional bridge suction pipe working state monitoring device according to claim 4, characterized in that, The sound collecting device is installed on the outer wall of the suction pipe.

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