CN211952730U

CN211952730U - Control device for condensate water recovery system of thermal power plant

Info

Publication number: CN211952730U
Application number: CN202020610264.XU
Authority: CN
Inventors: 王依强
Original assignee: Taishan Dongcheng Thermoelectric Co ltd
Current assignee: Taishan Dongcheng Thermoelectric Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-11-17
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a control device for a condensate recovery system of a thermal power plant, which relates to equipment used in the thermal power plant, and designs a detection component and an execution component for controlling the parameters of the temperature in a condensate pipe, the temperature in a circulating water box and the ion concentration in low-temperature condensate water, thereby realizing the control of the working process of the whole condensate recovery system, a spraying device and an electric heating device are started under the condition of need, the low-temperature condensate water after being filtered can cross a reverse osmosis water treatment device and directly enter a cation and anion exchange water treatment device and a deaerator and then enter a water pipeline used in the plant if the ion concentration is low enough, thereby greatly saving the use cost of the equipment and the electric energy consumed in the process, realizing the recycle of the condensate water of the thermal power plant, and reducing the waste of energy sources such as heat energy, electric energy and the like to the greatest extent through the accurate control process, the production cost is reduced, the structure is simple, and the device is suitable for large-scale popularization and application.

Description

Control device for condensate water recovery system of thermal power plant

Technical Field

The utility model relates to a thermal power plant uses equipment, specific controlling means for condensate recovery system of thermal power plant that says so.

Background

The heat power plant mainly uses a water heating system or a steam heating system for heating systems and condensate water recycling modes of industries and living areas, the two parts of condensate water cannot directly enter a water treatment system of the power plant due to high temperature, more impurities and other factors, and only a large amount of condensate water is discharged outside, so that heat energy and water resources are wasted.

The patent number is 2017207676423, the name is "thermal power plant comdenstion water recycle system", a processing mode of thermal power plant comdenstion water is disclosed, specifically for setting up an independent heating device, form the water sharing pipeline after the pipeline of thermal power plant comdenstion water mixes with heating return water pipeline, the temperature of comdenstion water has been reduced, obtain the circulating water that accords with independent heating device required temperature, for independent heating device heat supply, it divides the heat exchanger to go out the water end, partly forms the heating return water through rising temperature and continues to provide the circulating water for independent heating device with the comdenstion water mixing, another part reaches below 40 ℃ through the cooling, get into the water treatment system of power plant and handle, finally get into the water technology section of power plant.

The problem of the recovery of steam power plant's comdenstion water is recycled has been solved to this patent, and the comdenstion water does not have outer row, has utilized the heat energy of comdenstion water, has practiced thrift the water resource simultaneously. However, the technology still has certain technical problems, for example, the problem of exhaust steam absorption of a condensate pipeline, the problem of heating time of a circulating water tank of an independent heating device, and whether all the cooled water finally entering a water treatment system of a power plant can form qualified water for the power plant through all processes are solved by a more accurate control system.

Disclosure of Invention

For solving the technical problem that above-mentioned exists, the utility model provides a controlling means for condensate recovery system of steam power plant can real-time detection to the ion concentration condition of the intraductal temperature of comdenstion water, circulation tank's temperature, low temperature comdenstion water, and control executive component realizes the accurate control of whole process, reduction in production cost, avoids the wasting of resources to the comdenstion water intraductal, the spraying of circulation tank and the flow direction of low temperature comdenstion water in water treatment system.

In order to achieve the above purpose, the utility model adopts the technical proposal that: a control device for a condensate recovery system of a thermal power plant, the condensate recovery system of the thermal power plant comprises a condensate return pipe, a water sharing pipeline, an independent water heating device, a heating return pipe, a heat exchanger, a filter, a reverse osmosis water treatment device, an anion and cation exchange water treatment device, a deaerator and a water pipeline for the power plant, the condensate return pipe is communicated with the water inlet end of the water sharing pipeline, the water sharing pipeline is communicated with the water inlet end of the independent water heating device, the water outlet end of the independent water heating device is respectively communicated with the temperature rising water outlet end and the temperature lowering water outlet end of the heat exchanger, the temperature raising water outlet end of the heat exchanger is communicated with the water sharing pipeline, the temperature lowering water outlet end of the heat exchanger is sequentially communicated with the filter, the reverse osmosis water treatment device, the anion and cation exchange water treatment device, the deaerator and the water pipeline for, the condensate water recycling system of the thermal power plant further comprises a controller, an ion concentration sensor, a temperature sensor and an electric three-way valve, wherein the ion concentration sensor is arranged in the filter, the temperature sensor is respectively arranged on the inner walls of the condensate water recycling pipeline and the circulating water tank, the electric three-way valve is arranged on a pipeline between the filter and the reverse osmosis water treatment device, the third end of the electric three-way valve is communicated with the deaerator, the ion concentration sensor and the temperature sensor are respectively connected with the input end of the controller through data transmission lines, and the output end of the controller is respectively connected with the spraying device, a driving mechanism of the electric heating device and the electric three-way valve, and controlling the actions of the components.

The controller adopts a single chip microcomputer or a programmable controller.

The controller is provided with a display screen, displays the parameters transmitted by each device, uploads the parameters to be shared or printed, and performs operation control on a display interface.

The utility model discloses a to the intraductal temperature of comdenstion water, the temperature in the circulating water tank, the detection part and the executive component that ion concentration's in the low temperature condensate water carried out control, realized the control to whole condensate water recovery system working process, a spraying device, electric heater unit starts under the condition of needs, the low temperature condensate water is through filtering back if ion concentration is enough low then can cross reverse osmosis water treatment facilities and directly get into behind negative and positive ion exchange water treatment facilities and the oxygen-eliminating device and get into the power plant and use the water pipe, the electric energy of equipment use cost and in-process consumption has been practiced thrift greatly, both realized the recycle to the comdenstion water of power plant, again through the biggest degree of accurate control process heat energy as far as possible, the waste of energy such as electric energy, the production cost is reduced, moreover, the steam generator is simple in structure, and is.

Drawings

FIG. 1 is a schematic diagram of the present invention;

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

Detailed Description

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

as shown in the figures 1-2, the control device for the condensate water recovery system of the thermal power plant comprises a condensate water return pipeline 1, a shared water pipeline 2, an independent water heating device 3, a heating water return pipeline 4, a heat exchanger 5, a filter 6, a reverse osmosis water treatment device 7, an anion-cation exchange water treatment device 8, a deaerator 9 and a water pipeline 10 for the power plant, wherein the condensate water return pipeline 1 is communicated with a water inlet end of the shared water pipeline 2, the shared water pipeline 2 is communicated with a water inlet end of the independent water heating device 3, a water outlet end of the independent water heating device 3 is respectively communicated with a heating water outlet end and a cooling water outlet end of the heat exchanger 5, the heating water outlet end of the heat exchanger 5 is communicated with the shared water pipeline 2, the cooling water outlet end of the heat exchanger 5 is communicated with the filter 6, the reverse osmosis water treatment device 7, the anion-cation exchange water treatment, Oxygen-eliminating device 9, power plant's water pipeline 10 communicate in order, 2 departments of sharing water pipeline set up electric heater unit 11, 1 inner wall of comdenstion water return pipeline, set up all to be provided with spray set 13 on circulating water tank 12 between sharing water pipeline 2 and independent hot-water heating device 3 in order to absorb the comdenstion water exhaust steam, all spray sets 13 all with the cooling of heat exchanger 5 play water end intercommunication, thermal power plant's comdenstion water recovery system still includes controller 14, ion concentration sensor 15, temperature sensor 16 and electric three-way valve 17, ion concentration sensor 15 sets up in filter 6, temperature sensor 16 sets up respectively on the inner wall of comdenstion water return pipeline 1 and circulating water tank 12, electric three-way valve 17 sets up on the pipeline between filter 6 and reverse osmosis water treatment device 7, the third end with oxygen-eliminating device 9 intercommunication, ion concentration sensor 15, ion concentration sensor, The temperature sensors 16 are respectively connected with the input end of the controller 14 through data transmission lines, and the output end of the controller 14 is respectively connected with the spraying device 13, the driving mechanism of the electric heating device 11 and the electric three-way valve 17 to control the actions of the above components.

Preferably, the controller 14 in this embodiment is a single chip or a programmable controller, which is determined by the design habit of the technician.

Preferably, in this embodiment, the controller 14 sets a display screen, displays the parameters transmitted by each device, uploads the parameters to be shared or printed, and performs operation control on the display interface. According to the actual construction site condition, the economic condition and the objective management requirement condition.

The utility model discloses in concrete application, all set up temperature sensor 16 in 1, circulation tank 12 of comdenstion water return pipe, at 1 sectional top inboard every interval along the line of comdenstion water return pipe predetermine the distance and set up spray set 13, set up spray set 13 at circulation tank 12's top, set up ion concentration sensor 15 in filter 6, set up electric three-way valve 17 on the pipeline between filter 6 and reverse osmosis water treatment facilities 7, above-mentioned part passes through line connection with controller 14. According to actual conditions, the controller 14 is manufactured into a control box body to be placed at a safe position in a production workshop, parameters are displayed through a screen, all parts can be controlled to move or all parts can automatically move according to a set program, all data are uploaded to an upper computer, the data are stored and printed, and the like, and all the functions can be realized according to needs.

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 a controlling means for condensate recovery system of steam power plant, condensate recovery system of steam power plant includes comdenstion water return pipe (1), sharing water pipe way (2), independent hot-water heating device (3), heating return pipe (4), heat exchanger (5), filter (6), reverse osmosis water treatment facilities (7), anion exchange water treatment facilities (8), oxygen-eliminating device (9) and power plant water pipe way (10), comdenstion water return pipe (1) communicates with the end of intaking of sharing water pipe way (2), sharing water pipe way (2) communicate with the end of intaking of independent hot-water heating device (3), the delivery end of independent hot-water heating device (3) communicates with the intensification delivery end and the cooling delivery end of heat exchanger (5) respectively, the intensification delivery end of heat exchanger (5) communicates with sharing water pipe way (2), the cooling delivery end and filter (6) of heat exchanger (5), Reverse osmosis water treatment facilities (7), anion and cation exchange water treatment facilities (8), oxygen-eliminating device (9), power plant water pipeline (10) communicate in order, water sharing pipeline (2) department sets up electric heater unit (11), condensate water return pipeline (1) inner wall, set up all be provided with spray set (13) on circulating water tank (12) between water sharing pipeline (2) and independent water heating device (3) in order to absorb the comdenstion water exhaust steam, all spray set (13) all communicate with the cooling water outlet end of heat exchanger (5), its characterized in that, thermal power plant's comdenstion water recovery system still includes controller (14), ion concentration sensor (15), temperature sensor (16) and electric three-way valve (17), ion concentration sensor (15) set up in filter (6), temperature sensor (16) set up respectively on the inner wall of comdenstion water return pipeline (1) and circulating water tank (12), electric three-way valve (17) set up on the pipeline between filter (6) and reverse osmosis water treatment facilities (7), the third end with oxygen-eliminating device (9) intercommunication, ion concentration sensor (15), temperature sensor (16) are connected with the input of controller (14) through data transmission line respectively, the output of controller (14) is connected with spray set (13), the actuating mechanism and electric three-way valve (17) of electric heater unit (11) respectively, controls above-mentioned each part action.

2. The control device for the condensate water recovery system of the thermal power plant as claimed in claim 1, characterized in that the controller (14) is a single chip microcomputer or a programmable controller.

3. The control device for the condensate water recovery system of the thermal power plant as claimed in claim 1, wherein the controller (14) is provided with a display screen, and the display screen displays the parameters transmitted by each device and uploads the parameters to be shared or printed, and operation control is performed on the display screen.