CN219168647U

CN219168647U - Non-contact grinding sound measurement alarm monitoring system based on PLC

Info

Publication number: CN219168647U
Application number: CN202320113891.6U
Authority: CN
Inventors: 高超; 王雷; 杨鹏; 汪翊飞; 赵海山; 钱冰玉; 温雅静; 于桂楠
Original assignee: Sinoma Overseas Technology Development Co ltd
Current assignee: Sinoma Overseas Technology Development Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-06-13
Anticipated expiration: 2033-01-17

Abstract

The utility model discloses a non-contact grinding sound measurement alarm monitoring system based on a PLC (programmable logic controller), which comprises a sensor, a grinding sound measuring instrument, a PLC alarm monitor and an electric control box, wherein the PLC alarm monitor is connected with the electric control box, the electric control box is connected with the grinding sound measuring instrument, the grinding sound measuring instrument is connected with the sensor, and the sensor is arranged at the lower part of a mill. According to the utility model, the sound of the mill is collected through the sensor and the sensing signal is output to the grinding sound measuring instrument, the grinding sound measuring instrument detects the material condition in the mill according to the sensing signal and transmits the material condition to the PLC alarm monitor, the PLC alarm monitor monitors the state of the mill through the material condition and gives an alarm, and meanwhile, the state of the mill is transmitted to the DCS system, so that a central control personnel can remotely monitor the mill, the running parameters of the mill can be automatically regulated directly on the DCS system, the monitoring efficiency is effectively improved, the labor intensity is reduced, and the safe running of mill equipment is ensured.

Description

Non-contact grinding sound measurement alarm monitoring system based on PLC

Technical Field

The utility model relates to the technical field of grinding sound measurement alarm monitoring, in particular to a non-contact grinding sound measurement alarm monitoring system based on a PLC.

Background

In order to ensure the output and quality of the mill in the cement plant and reduce the energy consumption to the maximum extent, the load control is required to be carried out on the mill so that the mill reaches the optimal running state. The traditional mode is that a central control operator judges the situation of the materials in the mill through a plurality of process parameters such as feeding quantity, discharging quantity, main motor current of the mill, mill outlet temperature, mill vibration and the like, and the mode needs to depend on the plurality of process parameters and needs a higher operation level of the operator to accurately judge the actual situation of the materials in the mill.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a non-contact grinding sound measurement alarm monitoring system based on a PLC (programmable logic controller) so as to improve the monitoring efficiency.

The utility model provides a non-contact grinding sound measurement alarm monitored control system based on PLC, includes sensor, grinding sound measuring apparatu, PLC alarm monitor and electrical control box, the PLC alarm monitor is connected with the electrical control box, the electrical control box is connected with the grinding sound measuring apparatu, the grinding sound measuring apparatu is connected with the sensor, the mill lower part is located to the sensor.

Preferably, the PLC alarm monitor comprises a CPU main board, an input module, a communication module and an alarm module, wherein the CPU main board is connected with the input module, the communication module and the alarm module.

Preferably, the system further comprises a DCS system, and the DCS system is connected with the communication module through an industrial Ethernet.

Preferably, the PLC alarm monitor further comprises a UPS power supply and a power supply module, wherein the UPS power supply is connected with the power supply module, and the power supply module is connected with the CPU main board.

Preferably, the electric control box comprises a switch power supply, a relay and a wiring terminal, wherein the switch power supply is connected with the relay and the UPS, the relay is connected with the wiring terminal, one end of the wiring terminal is connected with the grinding sound measuring instrument, and the other end of the wiring terminal is connected with the input module.

Preferably, the sensor support is welded on the upright rod metal plate, and the sensor is fixedly mounted on the sensor support.

Preferably, the alarm module comprises an audible and visual alarm.

The beneficial effects of the utility model are as follows: the grinding machine sound is collected through the sensor and the sensing signal is output to the grinding sound measuring instrument, the grinding sound measuring instrument detects the material condition in the grinding machine according to the sensing signal and transmits the material condition to the PLC alarm monitor, the PLC alarm monitor monitors the grinding machine state through the material condition and gives out an alarm, meanwhile, the grinding machine state is transmitted to the DCS system so that a central control person can remotely monitor, when the grinding machine is detected to be in an abnormal state, the central control person can directly automatically adjust the running parameters of the grinding machine on the DCS system, the monitoring efficiency is effectively improved, the labor intensity is reduced, and the safe running of grinding machine equipment is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a block diagram of a non-contact grinding sound measurement alarm monitoring system based on a PLC according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a non-contact grinding sound measurement alarm monitoring system based on a PLC according to an embodiment of the present utility model.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

As shown in FIG. 1, the non-contact grinding sound measurement alarm monitoring system based on the PLC comprises a sensor, a grinding sound measuring instrument, a PLC alarm monitor and an electric control box, wherein the PLC alarm monitor is connected with the electric control box, the electric control box is connected with the grinding sound measuring instrument, the grinding sound measuring instrument is connected with the sensor, and the sensor is arranged at the lower part of the mill and can be specifically arranged at a proper position at the lower part of the mill according to actual production conditions.

Further, the device also comprises a sensor bracket, wherein the sensor bracket is welded on the upright rod metal plate, and the sensor is fixedly arranged on the sensor bracket and is used for collecting sound emitted by the mill and converting the sound into a voltage signal to be output. Preferably, the probe of the sensor adopts a unidirectional stainless steel horn barrel so as to overcome the defect of poor directivity, eliminate the interference of background noise on the sound of the grinding machine to be measured and ensure the accuracy of measurement.

The grinding sound measuring instrument is used for receiving the voltage signal output by the sensor, has a single-value corresponding relation between the output voltage value and the material filling rate, converts the voltage signal into a percentage indication corresponding to the material filling rate, can directly display the material filling rate in a percentage form on the grinding sound measuring instrument, and simultaneously outputs a 4-20mA current signal proportional to the percentage indication.

It should be noted that, the grinding sound measuring apparatus may be a conventional intelligent grinding sound measuring apparatus according to practical situations, which is not limited herein.

Further, as shown in fig. 2, the PLC alarm monitor includes a CPU motherboard, an input module, a communication module, and an alarm module, where the CPU motherboard is configured to execute a PLC control program and is connected to the input module, the communication module, and the alarm module. Preferably, the alarm module comprises an audible and visual alarm for audible and visual alarm.

The PLC alarm monitor further comprises a UPS power supply and a power supply module, wherein the UPS power supply is connected with the power supply module, the power supply module is connected with the CPU main board, and the UPS power supply is used for conveying electric energy to the power supply module so as to supply power to the CPU main board. The power module may employ a dedicated power source or be a power adapter.

Further, the electrical control box comprises a switching power supply, a relay and a wiring terminal, wherein the switching power supply is connected with the relay and the UPS power supply to supply power to the UPS power supply, the relay is connected with the wiring terminal, one end of the wiring terminal is connected with the grinding sound measuring instrument, and the other end of the wiring terminal is connected with an input module of the PLC alarm monitor.

The grinding sound measuring instrument outputs 4-20mA current signals to the electric control box through the wiring terminal, the electric control box can be connected with a plurality of grinding sound measuring instruments, and the 4-20mA current signals are output to the input module of the PLC alarm monitor through the wiring terminal. The CPU main board receives the current signal according to the input module, processes the current signal, and simultaneously carries out audible and visual alarm through the alarm module according to the processing result.

Further, the intelligent mill further comprises a DCS system, the DCS system is connected with the communication module through the industrial Ethernet, the PLC alarm monitor transmits the processing result of the current signal to the DCS system through the communication module, the DCS system displays the load state of the mill according to the processing result and is also used for receiving the control operation of a user, and a control instruction is sent to the mill according to the control operation. Preferably, the DCS system can also send an alarm signal at a DCS monitoring end according to the load state of the mill so as to prompt central control personnel at a DCS interface.

Specifically, the sensor is arranged at a proper position at the lower part of the mill, in the running process of the mill, sound between the grinding body and the material and sound between the grinding body and the mill lining plate are transmitted to the sound producing film of the sensor, so that the diaphragm vibrates, induced electromotive force is generated in the sensor coil, the sound is small when the number of the internal fillers is large, the frequency of the sound is low, the output voltage is reduced, the sound is large when the number of the internal fillers is small, the output voltage is increased, and the filling degree of the material in the mill is further reflected according to the size of the output voltage.

The grinding sound measuring instrument receives the voltage signal output by the sensor, converts the voltage signal into a corresponding material filling rate percentage, outputs a 4-20mA current signal which is proportional to the percentage indication to the electric control box through the wiring terminal, and outputs the 4-20mA current signal to the input module of the PLC alarm monitor through the wiring terminal. The CPU main board receives the current signal according to the input module, processes the current signal, and controls the alarm module to carry out audible and visual alarm when the current signal exceeds an upper limit threshold or is lower than a lower limit threshold. Preferably, the current signal can directly reflect the load state of the mill, such as the material filling rate, and when the PLC alarm monitor detects that the mill is in an abnormal state such as empty mill, full mill or sticky state, the audible and visual alarm module is controlled to emit audible and visual alarm.

Meanwhile, the PLC alarm monitor transmits the processing result to the DCS system through the communication module, a central control personnel can directly monitor the mill on the DCS system in a non-contact mode, and the parameters of mill equipment can be regulated and controlled in a manual operation mode according to actual working conditions. The central control personnel can also send a control instruction to the mill at the remote monitoring end according to the state of the mill through the DCS system so as to adjust the running state of the mill in a non-contact mode, for example, the feeding amount of the mill feeding equipment or the air quantity of the mill system can be controlled so as to control and adjust the load of the mill, thereby reducing the running power consumption of the mill, lightening the labor intensity of workers, effectively improving the safety of the equipment and ensuring the continuous and stable running of mill production.

According to the utility model, the sound of the mill is collected through the sensor and the sensing signal is output to the grinding sound measuring instrument, the grinding sound measuring instrument detects the material condition in the mill according to the sensing signal and transmits the material condition to the PLC alarm monitor, the PLC alarm monitor monitors the state of the mill through the material condition and gives an alarm, and meanwhile, the state of the mill is transmitted to the DCS system so as to be conveniently and remotely monitored by the central control personnel, and when the abnormal state of the mill is detected, the central control personnel can directly and automatically adjust the operation parameters of the mill on the DCS system, so that the monitoring efficiency is effectively improved, the labor intensity is reduced, and the safe operation of mill equipment is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. The utility model provides a non-contact grinding sound measurement alarm monitored control system based on PLC, its characterized in that includes sensor, grinding sound measuring apparatu, PLC alarm monitor and electrical control box, PLC alarm monitor is connected with electrical control box, electrical control box is connected with grinding sound measuring apparatu, grinding sound measuring apparatu is connected with the sensor, the mill lower part is located to the sensor.

2. The non-contact grinding sound measurement alarm monitoring system based on the PLC according to claim 1, wherein the PLC alarm monitor comprises a CPU main board, an input module, a communication module and an alarm module, and the CPU main board is connected with the input module, the communication module and the alarm module.

3. The PLC-based non-contact grinding sound measurement alarm monitoring system according to claim 2, further comprising a DCS system, wherein the DCS system is connected to the communication module via an industrial ethernet network.

4. The PLC-based non-contact grinding sound measurement alarm monitoring system of claim 2, wherein the PLC alarm monitor further comprises a UPS power source and a power source module, the UPS power source is connected to the power source module, and the power source module is connected to the CPU motherboard.

5. The PLC-based non-contact grinding sound measurement alarm monitoring system according to claim 4, wherein the electrical control box comprises a switching power supply, a relay and a connection terminal, the switching power supply is connected with the relay and the UPS power supply, the relay is connected with the connection terminal, one end of the connection terminal is connected with the grinding sound measuring instrument, and the other end is connected with the input module.

6. The PLC-based non-contact grinding sound measurement alarm monitoring system of claim 1, further comprising a sensor bracket welded to the pole metal plate, the sensor being fixedly mounted to the sensor bracket.

7. The PLC based non-contact grinding sound measurement alarm monitoring system of claim 2, wherein the alarm module comprises an audible and visual alarm.