CN211552588U

CN211552588U - Cooling tower monitoring control terminal

Info

Publication number: CN211552588U
Application number: CN201921021279.6U
Authority: CN
Inventors: 戴日赢; 韩育文; 廖四海
Original assignee: Guangzhou Shuangri Intelligent Technology Co ltd
Current assignee: Guangzhou Shuangri Intelligent Technology Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-09-22
Anticipated expiration: 2029-07-03

Abstract

The embodiment of the utility model discloses cooling tower monitor control terminal, including the central control platform, still include: the water temperature sensor is arranged in the circulating water inlet and outlet water pipe and is used for measuring the temperature of water flowing into and out of the tower; a PID controller connected with the central console in a bidirectional way; a human-machine interface connected with the PID controller; and a plurality of groups of fans which are controlled by the relay and used for cooling the cooling tower; the relay and the tower inlet and outlet water temperature sensor are connected with the PID controller, the tower inlet and outlet water temperature sensor feeds a water temperature signal back to the PID controller in real time, and the PID controller adjusts the number of the fans in the PID controller in real time to achieve the purpose of energy conservation. The utility model has the advantages of small system, flexible arrangement, low cost, good system compatibility, good function expansibility and the like; the utility model discloses a communication mode selects in a flexible way, can the different communication extension module of apolegamy, satisfies the on-the-spot communication wiring requirement.

Description

Cooling tower monitoring control terminal

Technical Field

The utility model relates to a refrigeration, cooling control technical application especially relate to a cooling tower monitor control terminal.

Background

As society develops, cooling towers are also widely used in various fields as important cooling devices for removing waste heat generated from industrial or central air conditioning systems. Whether the cooling tower operates normally or not is related to whether the equipment can operate normally or not, and even equipment failure and shutdown can be caused.

The existing cooling tower system cannot meet all-weather uninterrupted online monitoring and continuous acquisition of enterprises, and data has continuity, so that historical analysis and technical optimization of the enterprises on equipment, safety and energy consumption become more effective. All data can not be recorded paperless and the history can be checked. Traceable and quantifiable standards cannot be brought to government and enterprise management, and the management difficulty and labor cost are increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem who solves provides a cooling tower monitor control terminal to make the degree of difficulty and the human cost that reduce the management.

In order to solve the technical problem, the embodiment of the utility model provides a cooling tower monitor control terminal is provided, including central control cabinet, still include: the water temperature sensor is arranged in the circulating water inlet and outlet water pipe and is used for measuring the temperature of water flowing into and out of the tower; a PID controller connected with the central console in a bidirectional way; a human-machine interface connected with the PID controller; and a plurality of groups of fans which are controlled by the relay and used for cooling the cooling tower; the relay and the tower inlet and outlet water temperature sensor are connected with the PID controller, the tower inlet and outlet water temperature sensor feeds a water temperature signal back to the PID controller in real time, and the PID controller adjusts the number of the fans in the PID controller in real time to achieve the purpose of energy conservation.

The utility model has the advantages that: the system meets the requirements of all-weather uninterrupted on-line monitoring and continuous acquisition of enterprises, and ensures that data has continuity, so that the historical analysis and technical optimization of the enterprises on equipment, safety and energy consumption become more effective; all data are recorded in a paperless manner, the history can be checked, and various analysis reports and printing formats can be customized according to the requirements of customers, so that the system is more humanized and practical; the real and effective field data bring traceable and quantifiable standards to government and enterprise management, and the management difficulty is reduced; the influence of the environment on monitoring is reduced, and the remote and wireless acquisition of signals can be realized no matter the environment is toxic or harmful or an obstacle, so that the difficulty of field inspection is reduced, the difficulty of inspection and parameter recording is improved, and the labor cost is greatly reduced; through the application of the system, the input of personnel is reduced, fewer people manage more equipment and safety fields, and the prevention of the accidents is realized, the system can scan and judge historical operating data and safety warning values, so that a user can timely process equipment and potential safety hazards, and early discovery and early processing are realized; system signals such as PLC, DCS and the like are seamlessly compatible, so that the intelligent management is realized by the client with the least investment; the system can adapt to the change of the customer requirements at any time by good function expansibility, and can be adjusted and optimized in time to conform to the change of the customer.

Drawings

Fig. 1 is a schematic structural diagram of a cooling tower monitoring control terminal according to an embodiment of the present invention.

Fig. 2 is a circuit diagram of a part of a PID controller controlling a fan according to an embodiment of the present invention.

Fig. 3 is a circuit diagram of a connection portion between the PID controller and the water temperature sensor of the access tower according to the embodiment of the present invention.

Fig. 4 is a partial circuit diagram of a PID controller according to an embodiment of the present invention.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, if there is directional indication (such as upper, lower, left, right, front, and rear … …) only for explaining the relative position relationship between the components and the motion situation under a certain posture (as shown in the drawing), if the certain posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the first, second, etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 to 4, a cooling tower monitoring and control terminal according to an embodiment of the present invention includes a central console, an in-out tower water temperature sensor, a PID controller, a human-computer interface, and a fan.

The water temperature sensor of the inlet and outlet tower is arranged in the circulating water inlet and outlet pipe. The PID controller is connected with the central console in a bidirectional way. The PID controller adopts Smart200 PLC, and collects the water temperature in and out of the tower through an analog quantity collection module; during automatic control, the PID algorithm controls the number of the fans to be put in to control the water temperature to reach a set value; during manual control, the fan can be controlled to work independently; in the event of a controller failure, the fans may be operated individually by hard-wired circuitry. The human-computer interface is connected with the PID controller. And the PID controller and the human-computer interface are arranged on the cooling tower site.

And the multiple groups of fans are controlled by the relays to be switched on and off and are used for cooling the cooling tower. The relay and the water temperature sensor of the inlet and outlet tower are connected with the PID controller, and the PID controller controls the switch of the relay according to the detected water level. The embodiment of the utility model provides a PLC controller's output is to relay control fan, and the relay uses electric interlocking under the condition of PLC controller trouble, and the fan keeps original operating condition, and fan independent control demand can be guaranteed to on-the-spot emergent mode, guarantees that equipment does not shut down under the extreme condition. The water temperature sensor feeds water temperature signals back to the PID controller in real time, and the PID controller adjusts the number of fans in the tower in real time to achieve the purpose of energy conservation.

The utility model discloses monitoring method includes following step: 1) setting a target value of the PID controller; 2) feeding back a real-time water temperature signal to the PID controller; 3) the PID controller sends out control signals to be input into the corresponding units; 4) the number of the fans which are put into the system is adjusted in real time to achieve the purpose of energy conservation; 5) a round robin plan, timed operation, etc. may be set to optimize field control parameters. The utility model discloses but wide application in technical field such as mill, municipal administration, metallurgy, petrochemical industry, weaving and air conditioner.

The PID controller provided by the embodiment of the utility model supports communication modes such as Ethernet, PROFIBUS, RS485, RS232 and the like, is very easy to expand and has relevance with other systems, and supports that data collected on site is sent to upper-level and other field devices through the communication modes; the cooling tower monitoring control terminal of the embodiment of the utility model reduces the interference of the upper computer to the system during the design, and the communication fault of the upper computer can not influence the operation of the field device; meanwhile, the design of the control loop ensures that the shutdown influence cannot be generated under the condition of the fault of the PID controller.

The utility model optimizes the monitoring and energy saving of the traditional cooling tower, strengthens the state monitoring of the cooling tower, and realizes that fewer people manage more equipment and safety fields; scanning and judging the safety warning value, and timely processing equipment and potential safety hazards by a user; the system signals of a PLC, a DCS and the like are seamlessly compatible, and the small systems are distributed and flexibly arranged, so that the intelligent management is realized by the client with the least investment; the system can adapt to the change of the customer requirements at any time by good function expansibility, and can be adjusted and optimized in time to conform to the change of the customer. The utility model has the advantages of small system, flexible arrangement, low cost, good system compatibility, good function expansibility and the like; the utility model discloses a communication mode selects in a flexible way, can satisfy different communication demands.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cooling tower monitor control terminal, includes central console, its characterized in that still includes: the water temperature sensor is arranged in the circulating water inlet and outlet water pipe and is used for measuring the temperature of water flowing into and out of the tower; a PID controller connected with the central console in a bidirectional way; a human-machine interface connected with the PID controller; and a plurality of groups of fans which are controlled by the relay and used for cooling the cooling tower; the relay and the tower inlet and outlet water temperature sensor are connected with the PID controller, the tower inlet and outlet water temperature sensor feeds a water temperature signal back to the PID controller in real time, and the PID controller adjusts the number of the fans in the PID controller in real time to achieve the purpose of energy conservation.