CN214275934U

CN214275934U - Intelligent control device for energy-saving heat supply system of thermal power plant

Info

Publication number: CN214275934U
Application number: CN202120058155.6U
Authority: CN
Inventors: 李幸
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-09-24
Anticipated expiration: 2031-01-11

Abstract

The utility model discloses an intelligent control device for energy-conserving heating system of thermal power plant, the intelligent control field of thermal power plant heat supply is related to, moreover, the steam generator is simple in structure, through each part of PLC controller control, the information of will inputing is exported after through the program calculation, the aperture of each way valve of control, thereby realize fast, intelligence thermoregulation temperature control, the temperature and the liquid level numerical value that only need predetermine attemperator on the display screen can automatic operation, need not the special person on duty, the festival has greatly been given about artifically, simultaneously because the flow of each way valve of accurate control, avoid appearing the accident, the security is higher, the design of alarm, it spills over and causes the pollution to the environment to have avoided the strong brine, entire system compact structure, therefore, the carrier wave prepaid electric energy meter is low in cost, and the steam generator is suitable for large-scale popularization and application.

Description

Intelligent control device for energy-saving heat supply system of thermal power plant

Technical Field

The utility model relates to an intelligent control field of heat supply of thermal power plant, specific intelligent control device for energy-conserving heating system of thermal power plant that says so.

Background

The heat supply of the thermal power plant is one of the basic modes of heat supply of cities and industrial parks in China. Energy-saving heat supply is mentioned, and the basic idea is to recycle the heat of circulating water sewage, cooling tower drainage and auxiliary steam and reuse the heat for heating users. Circulating water blowdown water, hydrophobic can produce the strong brine of high concentration after handling, and the direct environmental pollution that can discharge can be got into ash residue system or coal yard after needing to collect it for ash, sediment or coal yard humidifying, have solved the problem of polluted environment. At present, the energy-saving heating system is in an initial utilization stage, the opening of various valves needs to be manually adjusted, and a person is on duty. Along with the continuous development of science and technology, intelligent control is more and more extensive in application, and labour saving and time saving practices thrift artifically, consequently urgently needs to design one set of intelligent control system for energy-conserving heating system.

Disclosure of Invention

For solving the technical problem that above-mentioned exists, the utility model provides an intelligent control device for energy-conserving heating system of thermal power plant predetermines temperature and liquid level through the display screen, accomplishes the flow control of each way valve automatically, and labour saving and time saving need not the special person on duty.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

an intelligent control device for an energy-saving heat supply system of a thermal power plant comprises a heat preservation water tank, a conveying pump, a water quality adjusting device, a filtering desalting device, a temperature adjusting device, a circulating water sewage discharge pipeline, a drain pipeline, auxiliary steam and a heat user, wherein the circulating water sewage discharge pipeline and the drain pipeline are respectively connected with the heat preservation water tank, the conveying pump, the water quality adjusting device, the filtering desalting device, the temperature adjusting device and the heat user are sequentially connected, the steam pipeline output by the temperature adjusting device is connected with the heat preservation water tank, the intelligent control device comprises a shell, a display screen, a PLC (programmable logic controller), a first temperature sensor, a first liquid level sensor, a second temperature sensor, a second liquid level sensor and an alarm, the PLC is arranged in the shell, the top of the shell is provided with the display screen and is connected with the PLC, and the first temperature sensor and the first liquid level sensor are arranged in the heat preservation water tank, and be connected with the PLC controller, temperature sensor two and level sensor two set up in attemperator and are connected with the PLC controller, filter the container that the desalination device bottom was connected and is held the strong brine, set up level sensor three and alarm in the container and be connected with the PLC controller, the flow valve of the flow valve one of circulating water drainage sewage pipeline, the flow valve two of drain line, the flow valve three of auxiliary steam, the backwash valve of auxiliary steam and the flow valve four of delivery pump all are connected with the PLC controller.

The PLC is internally provided with a control program, the preset temperature and the preset liquid level of the temperature adjusting device are set on the display screen, the opening degrees of a first flow valve of a circulating water drainage sewage pipeline, a second flow valve of a drainage pipeline and a third flow valve of auxiliary steam are controlled through the information of a second temperature sensor and a second liquid level sensor and by combining the information of the first temperature sensor and the information of the first liquid level sensor, intelligent temperature adjustment is achieved, the preset liquid level of the temperature adjusting device is achieved by controlling a fourth flow valve of a delivery pump, the requirement of a heat user is met, an alarm gives an alarm when the liquid level of a container at the bottom of the filtering and desalting device reaches the preset height, and strong brine is taken away.

The utility model discloses simple structure, through each part of PLC controller control, pass through program calculation back output with the information of input, the aperture of each way valve of control, thereby realize fast, the intelligence accuse temperature that adjusts the temperature, the temperature and the liquid level numerical value that only need predetermine attemperator on the display screen can automatic operation, need not the special person on duty, the manual work has greatly been practiced thrift to the festival, simultaneously because the flow of each way valve of accurate control, avoid appearing the accident, the security is higher, the design of alarm, strong brine overflow and cause the pollution to the environment, whole system compact structure, therefore, the carrier wave prepaid electric energy meter is low in cost, and is suitable for large-scale popularization and application.

Drawings

FIG. 1 is a schematic view of the heating system of the present invention;

fig. 2 is a schematic diagram of the intelligent control device.

Detailed Description

The invention is described in detail below with reference to the following figures and specific embodiments:

as shown in fig. 1-2, the intelligent control device for the energy-saving heat supply system of the thermal power plant comprises a heat preservation water tank 1, a delivery pump 2, a water quality adjusting device 3, a filtering desalination device 4, a temperature adjusting device 5, a circulating water and sewage pipeline 6, a drain pipeline 7, auxiliary steam 8 and a heat consumer 9, wherein the circulating water and sewage pipeline 6 and the drain pipeline 7 are respectively connected with the heat preservation water tank 1, the delivery pump 2, the water quality adjusting device 3, the filtering desalination device 4, the temperature adjusting device 5 and the heat consumer 9 are sequentially connected, the steam pipeline output by the temperature adjusting device 5 is connected with the heat preservation water tank 1, the intelligent control device comprises a shell 10, a display screen 11, a PLC controller 12, a first temperature sensor 13, a first liquid level sensor 14, a second temperature sensor 15, a second liquid level sensor 16 and an alarm 18, PLC controller 12 sets up in casing 10, casing 10 top sets up display screen 11 and is connected with PLC controller 12, temperature sensor 13 and level sensor 14 set up in holding water box 1 to be connected with PLC controller 12, two 15 and two 16 of level sensor set up in attemperator 5 and are connected with PLC controller 12, filter the container that holds the strong brine bottom the desalination device 4, set up level sensor three 17 and alarm 18 in the container and be connected with PLC controller 12, the flow valve 61 of circulating water drainage sewage pipeline 6, two 71 of flow valve of drain pipeline 7, three 81 of flow valve of auxiliary steam 8, the reflux valve 82 of auxiliary steam 8 and the four 21 of flow valve of delivery pump 2 all are connected with PLC controller 12.

The utility model discloses when using, PLC controller 12 embeds control program, set for attemperator 5's predetermined temperature and predetermined liquid level on display screen 11, through two 15 temperature sensor, two 16 information of level sensor, combine temperature sensor 13, a 14 information of level sensor, control circulating water drainage sewage pipeline 6's flow valve 61, two 71 of flow valve of hydrophobic pipeline 7, the aperture of the three 81 of flow valve of auxiliary steam 8, realize that intelligence adjusts the temperature, flow valve four 21 through control delivery pump 2 is in order to reach attemperator 5 predetermined liquid level, satisfy hot user 9's demand, filter the 4 bottom container liquid levels of demineralizer and reach and predetermine high time alarm 17 warning, in time tak the strong brine away, be used for ash and slag system or coal yard, be unlikely to in the container internal liquid excessive, cause the pollution of environment.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides an intelligent control device for energy-conserving heating system of thermal power plant, heating system includes holding water box (1), delivery pump (2), quality of water adjusting device (3), filters demineralizer (4), attemperator (5), circulation water drainage sewage pipeline (6), hydrophobic pipeline (7), auxiliary steam (8) and hot user (9), circulation water drainage sewage pipeline (6) and hydrophobic pipeline (7) are connected with holding water box (1) respectively, holding water box (1), delivery pump (2), quality of water adjusting device (3), filter demineralizer (4), attemperator (5) and hot user (9) are connected in order, the steam pipeline of attemperator (5) output is connected with holding water box (1), its characterized in that, intelligent control device includes casing (10), display screen (11), PLC controller (12), temperature sensor (13), level sensor (14), two (15) of temperature sensor, level sensor two (16) and alarm (18), PLC controller (12) sets up in casing (10), casing (10) top sets up display screen (11) and is connected with PLC controller (12), temperature sensor (13) and level sensor (14) set up in holding water box (1) to be connected with PLC controller (12), two (15) of temperature sensor and level sensor two (16) set up in attemperator (5) and are connected with PLC controller (12), filter desalination device (4) bottom connection and hold the container of strong brine, set up level sensor three (17) and alarm (18) in the container and be connected with PLC controller (12), the flow valve (61) of circulation row sewage pipeline (6) is one, And a flow valve II (71) of the drainage pipeline (7), a flow valve III (81) of the auxiliary steam (8), a return valve (82) of the auxiliary steam (8) and a flow valve IV (21) of the delivery pump (2) are connected with the PLC (12).