CN211744506U

CN211744506U - Intelligent dosing device based on cloud platform

Info

Publication number: CN211744506U
Application number: CN202020684985.5U
Authority: CN
Inventors: 孟军
Original assignee: Guangdong Huangmeng New Energy Technology Co ltd
Current assignee: Guangdong Huangmeng New Energy Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-10-23
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses an intelligent dosing device based on a cloud platform, which is used for dosing boiler water, and comprises a dosing pump, a data platform connected with the dosing pump through wireless transmission, a cloud service platform connected with the data platform through a communication interface, and a remote monitoring device connected with the cloud service platform through wireless transmission, wherein the data platform comprises a DTU remote transmission receiving device used for receiving data and a PLC controller connected with the output end of the DTU remote transmission receiving device, the PLC controller is connected with the dosing pump, and a PID operation module and a quantitative fine adjustment module are arranged in the PLC controller; this intelligent charge device based on cloud platform control is timely, and is low to operating personnel degree of dependence, and can accomplish meticulous, accurate control.

Description

Intelligent dosing device based on cloud platform

Technical Field

The utility model relates to an intelligence charge device based on cloud platform.

Background

At present, domestic boiler water control of a drum boiler generally adopts a phosphate treatment process, and the specific flow is that phosphate solution dissolved in a dosing tank is added into a boiler drum by a dosing pump. Due to its low cost, phosphate treatment technology has been used for decades. From the experience of use, this treatment process presents some technical performance limitations. For example, the control delay is serious, the technical level and the responsibility of field operators are highly depended on, the fine and precise control is difficult to achieve, the system index fluctuation is large, and the long-term stable and safe operation of the boiler is not facilitated.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims at providing a control is timely, and is low to operating personnel degree of dependence, and can accomplish the intelligent charge device based on cloud platform that becomes more meticulous, accurate control.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an intelligence charge device based on cloud platform for boiler water adds medicine, including the dosing pump, and with the dosing pump between adopt wireless transmission connection's data platform, and the cloud service platform who adopts communication interface connection with data platform, and the remote monitoring equipment who adopts wireless transmission connection with cloud service platform, data platform is including a DTU teletransmission receiving arrangement who is used for receiving data, and a PLC controller who is connected with DTU teletransmission receiving arrangement output, the PLC controller is connected with the dosing pump, be equipped with PID operation module and quantitative fine setting module in the PLC controller.

Preferably, the PLC controller is provided with an ethernet port and a 4G interface.

Preferably, the data platform is wirelessly connected with the cloud service platform through an Ethernet port and a 4G interface.

Preferably, the PLC is wirelessly connected with the dosing pump through a PID operation module and a quantitative fine adjustment module.

Preferably, the remote monitoring device comprises a remote PC terminal and a mobile phone APP client terminal.

The PLC controller is preset with a normal operation mode and an exception handling mode, and the exception handling mode is set to be a step progressive multi-stage different early warning and corresponding handling mode. The PLC controller intelligently controls the dosing process in real time according to monitoring data received by the data platform, namely when an online monitoring index is in a preset normal interval, the PLC operates according to a normal operation mode; when the online monitoring index is not in the preset normal interval, the PLC automatically operates according to the abnormal processing mode, the device can automatically select the corresponding processing mode according to the abnormal grade, and an early warning prompt is given through a remote wireless function to remind a field operator to investigate whether the boiler water quality system has external abnormal change, and meanwhile, the operation of the system in the processing mode is monitored and controlled until the system index is restored to a reasonable interval.

The utility model has the advantages that:

compared with the prior art, the intelligent automatic control dosing system greatly reduces the intensity and difficulty of field operation; the corrosion protection to the boiler can be more comprehensive, the water and steam quality is improved, and the safety factor of the boiler is improved; the intelligent, automatic, remote and wireless monitoring and control system is established, and the boiler plays a vital role in realizing long-term, safe, efficient and stable operation.

Drawings

Fig. 1 is a schematic structural view of the intelligent dosing device based on the cloud platform of the present invention;

FIG. 2 is a schematic block diagram of an analog PID control system.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Example (b):

referring to fig. 1, an intelligent dosing device based on a cloud platform is used for dosing boiler water, and comprises a dosing pump 1, a data platform 2 connected with the dosing pump 1 through wireless transmission, a cloud service platform 3 connected with the data platform 2 through a communication interface, and a remote monitoring device 4 connected with the cloud service platform 3 through wireless transmission, wherein the data platform 2 comprises a DTU remote transmission receiving device 21 used for receiving data and a PLC 22 connected with the output end of the DTU remote transmission receiving device 21, the PLC 22 is connected with the dosing pump 1, and a PID operation module and a quantitative fine adjustment module are arranged in the PLC 22.

The PLC controller 22 is provided with an Ethernet port and a 4G interface, the data platform 2 is in wireless connection with the cloud service platform 3 through the Ethernet port and the 4G interface, and the PLC controller 22 is in wireless connection with the dosing pump 1 through a PID operation module and a quantitative fine adjustment module.

The intelligent control system automatically adjusts the process parameters according to the indexes and stabilizes the furnace water index in a preset optimal interval; the remote transmission system uploads data and working conditions to the cloud platform and the receiving end in real time, remote real-time monitoring and optimization suggestion are carried out, so that a main department can master the first-line operation working condition of the boiler at any time, the intelligent automatic control mode overcomes the defects of manual intermittent dosing and detection, and manual operation intensity and index fluctuation are greatly reduced.

Ethernet port and 4G interface on the PLC controller 22 as long as insert 4G flow card or insert the ethernet, just in time can upload to the high in the clouds fast, and the detection value threshold value warning appears when equipment operation, will be at cell-phone APP end or remote computer client propelling movement alarm information to in time look over, adjust the parameter.

The remote monitoring terminal can be a remote computer or a mobile phone APP, the remote computer and the mobile phone APP terminal have the same picture with the touch screen of the control terminal, the operation is synchronous, the login is simple and convenient, the visiting time of a visitor can be set, and better management equipment is achieved.

The PH value, the conductivity and the temperature data are received to a PLC (programmable logic controller) 22 through a DTU (data transfer unit) remote transmission receiving device 21, PID (proportion integration differentiation) operation and quantitative fine adjustment are carried out in the PLC 22 through set parameters, and the quantitative fine adjustment technology is used for subdividing an ideal control range and a qualified control range to subdivide 2 bits after a decimal point; then, the dosing pump 1 is subjected to variable frequency speed regulation according to real-time detection data, simple quantitative fine adjustment cannot meet ideal control, PID operation needs to be matched, and the output of variable frequency = PID operation value + quantitative fine adjustment value, which is the optimal speed of the dosing pump 1 and can ensure that the water quality is always kept in an ideal control range.

The PLC 22 changes the dosage by adjusting the variable frequency rotating speed of the dosing pump 1; add medicine pump 1 and can add medicine and intermittent type and add 2 kinds of modes, and 2 kinds of modes can both carry out PID operation + ration fine setting to guarantee the accuracy of adding medicine.

The PID operation + quantitative fine adjustment principle is as follows:

in an analog control system, the most common control law for the PLC controller 22 is PID control. The schematic block diagram of the analog PID control system is shown in FIG. 2. The system consists of an analog PID controller and a controlled object.

The PID controller is a linear controller which forms a control deviation from a given value yd (t) and an actual output value y (t): err = Yd-Y.

The PID control law is as follows:

wherein Kp is a proportionality coefficient; ti is an integral time constant; TD is the differential time constant.

Briefly, the PID controller has the following correction steps:

1) and (3) proportional links: and proportionally reflects a deviation signal error (t) of a control system, and once the deviation is generated, the controller immediately generates a control action to reduce the deviation.

2) And (3) an integration step: the method is mainly used for eliminating the static error and improving the non-difference of the system. The strength of the integral action depends on the integral time constant Ti, and the larger the Ti is, the weaker the integral action is, and the stronger the integral action is.

3) And (3) differentiation: reflects the variation trend (change rate) of the deviation signal and can introduce an effective early correction signal into the system before the deviation signal becomes too large, thereby accelerating the action speed of the system and reducing the regulation time.

The PID operation is carried out by command encapsulation through a PLC, a client only needs to input a target value to complete the automatic control of the PID, and the PID parameters can be automatically set and manually set through button conversion.

The PID can basically meet the requirement of control precision, and in order to achieve better control precision, a quantitative fine adjustment function is added on the basis, namely PID operation value + -quantitative fine adjustment value = actual output adjustment, so that fine adjustment is added on the basis of PID.

The utility model has the advantages that:

The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.

Claims

1. The utility model provides an intelligence charge device based on cloud platform for boiler water adds medicine, its characterized in that: including the dosing pump, and with the dosing pump between the data platform of being connected, and the cloud service platform of being connected with data platform, and the remote monitoring equipment who adopts wireless transmission to be connected with cloud service platform, data platform is including a DTU teletransmission receiving arrangement who is used for receiving data, and a PLC controller who is connected with DTU teletransmission receiving arrangement output, the PLC controller is connected with the dosing pump, be equipped with PID operation module and quantitative trimmer module in the PLC controller.

2. The intelligent dosing device based on the cloud platform of claim 1, wherein: and the PLC is provided with an Ethernet port and a 4G interface.

3. The intelligent dosing device based on the cloud platform of claim 1, wherein: the data platform is wirelessly connected with the cloud service platform through the Ethernet port and the 4G interface.

4. The intelligent dosing device based on the cloud platform of claim 1, wherein: the PLC is wirelessly connected with the dosing pump through a PID operation module and a quantitative fine adjustment module.

5. The intelligent dosing device based on the cloud platform of claim 1, wherein: the remote monitoring equipment comprises a remote PC (personal computer) end and a mobile phone APP (application) client.