CN104315916B - Heat recovery electric-control system - Google Patents
Heat recovery electric-control system Download PDFInfo
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- CN104315916B CN104315916B CN201410569244.1A CN201410569244A CN104315916B CN 104315916 B CN104315916 B CN 104315916B CN 201410569244 A CN201410569244 A CN 201410569244A CN 104315916 B CN104315916 B CN 104315916B
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Abstract
The invention discloses a kind of heat recovery electric-control system, comprise waste heat recovery control module, UTILIZATION OF VESIDUAL HEAT IN control module, central control unit.The invention has the advantages that by arranging multiple differential pressure pick-up, temperature sensor image data, and by first, second PLC control pre-heating technique flow process, the utilization rate of waste heat of heat recovery control system is improved greatly, and waste heat is applied to production, domestic hot-water, utilization rate of waste heat can reach 45 ~ 55%.
Description
Technical field
The present invention relates to heat recovery field, especially relate to heat recovery electric-control system.
Background technology
The industrial furnace group of scale cluster arrangement, as all kinds of with combustion gas, fuel oil, fire coal etc. for fuel to provide the equipment such as heat-treatment furnace, forge furnace, curing oven, sintering oven of thermal source by flame combustion, operationally given off high-temperature flue gas contains a large amount of waste heat.At present, in actual UTILIZATION OF VESIDUAL HEAT IN, most of residual heat system is only applied to preheated air, and small part residual heat system can be applied to production, life bathing water, makes heat recovery efficiency lower.And the control of hot water temperature is very undesirable, there is irrational place in electric-control system in technological process.
Summary of the invention
The object of the invention is to provide a kind of heat recovery electric-control system.
For achieving the above object, the present invention takes following technical proposals:
Heat recovery electric-control system of the present invention, comprises waste heat recovery control module, UTILIZATION OF VESIDUAL HEAT IN control module, central control unit; Described waste heat recovery control module comprises the first PLC, be installed on the heat-exchanger rig on high-temperature flue, the described high-temperature flue between described heat-exchanger rig exhaust opening to chimney breast be provided with successively the first temperature sensor, high temperature frequency control blower fan; Enter on high-temperature flue that mouth to heat-exchanger rig enters between mouth differential pressure pick-up, the second temperature sensor, Electric air valve are installed successively at high-temperature flue; First, second temperature sensor described is connected with described first PLC signal input part with the signal output part of differential pressure pick-up, and the first PLC output control terminal is connected with the actuating mechanism controls input end of described Electric air valve, the Frequency Converter Control input end of high temperature frequency control blower fan respectively;
Described UTILIZATION OF VESIDUAL HEAT IN control module comprises the second PLC, the first plate type heat exchanger, the second plate type heat exchanger, three-plate type heat interchanger; The tube side import of described first plate type heat exchanger and the tube side outlet of described heat-exchanger rig, the tube side of the first plate type heat exchanger exports the tube side inlet communication by the first heat-exchanger pump and heat-exchanger rig, the shell-side outlet of the first plate type heat exchanger is communicated with industrial thermal storage tank top, and the shell side inlet communication of the second heat-exchanger pump and the first plate type heat exchanger is passed through in described industrial thermal storage tank bottom; The tube side import of described second plate type heat exchanger is communicated with industrial thermal storage tank top, and the tube side outlet of the second plate type heat exchanger is communicated with industrial thermal storage tank bottom by the 3rd heat-exchanger pump; The tube side import of described three-plate type heat interchanger and the tube side outlet of heat-exchanger rig, the tube side of three-plate type heat interchanger exports the tube side inlet communication by the 4th heat-exchanger pump and heat-exchanger rig, the shell-side outlet of three-plate type heat interchanger is communicated with top, domestic hot-water pond, and the shell side inlet communication of the 5th heat-exchanger pump and three-plate type heat interchanger is passed through in bottom, described domestic hot-water pond; Water-in and water-out temperature sensor is respectively arranged with in the tube side import of described first, second, third plate type heat exchanger and shell-side outlet; Be positioned at described industrial thermal storage tank, domestic hot-water pond is respectively arranged with level detection sensor; Described water-in and water-out temperature sensor signal output terminal and described level detection sensor signal output part are connected with described second PLC signal input part respectively, and the second PLC output control terminal is connected with the actuating mechanism controls input end of described first, second, third, fourth, the 5th heat-exchanger pump respectively;
Described central control unit is made up of industrial computer, and described industrial computer is communicated to connect with first, second PLC respectively by telecommunication cable.
The invention has the advantages that by arranging multiple differential pressure pick-up, temperature sensor image data, and by first, second PLC control pre-heating technique flow process, the utilization rate of waste heat of heat recovery control system is improved greatly, and waste heat is applied to production, domestic hot-water, utilization rate of waste heat can reach 45 ~ 55%.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, heat recovery electric-control system of the present invention, comprises waste heat recovery control module 1, UTILIZATION OF VESIDUAL HEAT IN control module 2, central control unit 3; Described waste heat recovery control module 1 comprises the first PLC, be installed on the heat-exchanger rig 5 on high-temperature flue 4, the described high-temperature flue 4 between described heat-exchanger rig 5 exhaust opening to chimney 6 exports is provided with the first temperature sensor 7, high temperature frequency control blower fan 8 successively; Enter on high-temperature flue 4 that mouth to heat-exchanger rig 5 enters between mouth differential pressure pick-up 9, second temperature sensor 10, Electric air valve 11 are installed successively at high-temperature flue 4; First, second temperature sensor 7,10 described is connected with described first PLC signal input part with the signal output part of differential pressure pick-up 9, and the first PLC output control terminal is connected with the actuating mechanism controls input end of described Electric air valve 11, the Frequency Converter Control input end of high temperature frequency control blower fan 8 respectively;
Described UTILIZATION OF VESIDUAL HEAT IN control module 2 comprises the second PLC, the first plate type heat exchanger 12, second plate type heat exchanger 13, three-plate type heat interchanger 14; The described tube side import of the first plate type heat exchanger 12 and the tube side outlet of described heat-exchanger rig 5, the tube side outlet of the first plate type heat exchanger 12 is by the tube side inlet communication of the first heat-exchanger pump 15 with heat-exchanger rig 5, the shell-side outlet of the first plate type heat exchanger 12 is communicated with industrial thermal storage tank 16 top, and the shell side inlet communication of the second heat-exchanger pump 17 and the first plate type heat exchanger 12 is passed through in described industrial thermal storage tank 16 bottom; The tube side import of described second plate type heat exchanger 13 is communicated with industrial thermal storage tank 16 top, and the tube side outlet of the second plate type heat exchanger 13 is communicated with industrial thermal storage tank 16 bottom by the 3rd heat-exchanger pump 18; The tube side import of described three-plate type heat interchanger 14 and the tube side outlet of heat-exchanger rig 5, the tube side outlet of three-plate type heat interchanger 14 is by the tube side inlet communication of the 4th heat-exchanger pump 19 with heat-exchanger rig 5, the shell-side outlet of three-plate type heat interchanger 14 is communicated with top, domestic hot-water pond 20, and the shell side inlet communication of the 5th heat-exchanger pump 21 and three-plate type heat interchanger 14 is passed through in bottom, described domestic hot-water pond 20; Water-in and water-out temperature sensor 22,23,24,31,25,26 is respectively arranged with in the tube side import of described first, second, third plate type heat exchanger 12,13,14 and shell-side outlet; Be positioned at described industrial thermal storage tank 16, domestic hot-water pond 20 is respectively arranged with level detection sensor 27,28; Described water-in and water-out temperature sensor 22,23 signal output part is connected with described second PLC signal input part respectively with described level detection sensor 27,28 signal output part, and the second PLC output control terminal is connected with the actuating mechanism controls input end of described first, second, third, fourth, the 5th, the 6th, the 7th heat-exchanger pump 15,17,18,19,21,29,30 respectively;
Described central control unit 3 is made up of industrial computer, and described industrial computer is communicated to connect with first, second PLC respectively by telecommunication cable.
Principle of work of the present invention is summarized as follows:
It is inner that described differential pressure pick-up 9 is arranged on high-temperature flue 4, is used for measuring the pressure in high-temperature flue 4; It is inner that first, second temperature sensor 7,10 is arranged on high-temperature flue 4, is used for measuring the temperature in high-temperature flue 4;
Can the pressure that the first PLC judges in high-temperature flue 4 according to differential pressure pick-up 9 sampled data meet production requirement, and pass through the rotating speed of Frequency Converter Control high temperature frequency control blower fan 8; Differential pressure pick-up 9 plays overtemperature alarm and effect for subsequent use, sent warning message, and carried out handling failure by related personnel when differential pressure pick-up 9 loses efficacy.First PLC controls the open amount of Electric air valve 11 according to the sampled data of temperature sensor 10, and temperature then increases the open amount of Electric air valve 11 higher than setting value, and temperature then reduces the open amount of Electric air valve 11 lower than setting value.
Be arranged on the level detection sensor 27,28 in described industrial thermal storage tank 16, domestic hot-water pond 20, be respectively used to detect the water level in industrial thermal storage tank 16, domestic hot-water pond 20, realize automatic water supplement function by the second PLC; Be arranged at the described tube side import of first, second, third plate type heat exchanger 12,13,14 and the water-in and water-out temperature sensor 22,23,24,31,25,26 of shell-side outlet, for gathering the inflow temperature entering first, second, third plate type heat exchanger 12,13,14 tube side, and gather the leaving water temperature of first, second, third plate type heat exchanger 12,13,14 shell side, and controlled the rotating speed of the first, second, third, fourth, the 5th heat-exchanger pump 15,17,18,19,21 by the second PLC; Staff controls the start and stop of the 6th, the 7th heat-exchanger pump 29,30 by the second PLC.
Claims (1)
1. a heat recovery electric-control system, comprises waste heat recovery control module, UTILIZATION OF VESIDUAL HEAT IN control module, central control unit; It is characterized in that: described waste heat recovery control module comprises the first PLC, be installed on the heat-exchanger rig on high-temperature flue, the described high-temperature flue between described heat-exchanger rig exhaust opening to chimney breast be provided with successively the first temperature sensor, high temperature frequency control blower fan; Enter on high-temperature flue that mouth to heat-exchanger rig enters between mouth differential pressure pick-up, the second temperature sensor, Electric air valve are installed successively at high-temperature flue; First, second temperature sensor described is connected with described first PLC signal input part with the signal output part of differential pressure pick-up, and the first PLC output control terminal is connected with the actuating mechanism controls input end of described Electric air valve, the Frequency Converter Control input end of high temperature frequency control blower fan respectively;
Described UTILIZATION OF VESIDUAL HEAT IN control module comprises the second PLC, the first plate type heat exchanger, the second plate type heat exchanger, three-plate type heat interchanger; The tube side import of described first plate type heat exchanger and the tube side outlet of described heat-exchanger rig, the tube side of the first plate type heat exchanger exports the tube side inlet communication by the first heat-exchanger pump and heat-exchanger rig, the shell-side outlet of the first plate type heat exchanger is communicated with industrial thermal storage tank top, and the shell side inlet communication of the second heat-exchanger pump and the first plate type heat exchanger is passed through in described industrial thermal storage tank bottom; The tube side import of described second plate type heat exchanger is communicated with industrial thermal storage tank top, and the tube side outlet of the second plate type heat exchanger is communicated with industrial thermal storage tank bottom by the 3rd heat-exchanger pump; The tube side import of described three-plate type heat interchanger and the tube side outlet of heat-exchanger rig, the tube side of three-plate type heat interchanger exports the tube side inlet communication by the 4th heat-exchanger pump and heat-exchanger rig, the shell-side outlet of three-plate type heat interchanger is communicated with top, domestic hot-water pond, and the shell side inlet communication of the 5th heat-exchanger pump and three-plate type heat interchanger is passed through in bottom, described domestic hot-water pond; Water-in and water-out temperature sensor is respectively arranged with in the tube side import of described first, second, third plate type heat exchanger and shell-side outlet; Be positioned at described industrial thermal storage tank, domestic hot-water pond is respectively arranged with level detection sensor; Described water-in and water-out temperature sensor signal output terminal and described level detection sensor signal output part are connected with described second PLC signal input part respectively, and the second PLC output control terminal is connected with the actuating mechanism controls input end of described first, second, third, fourth, the 5th heat-exchanger pump respectively;
Described central control unit is made up of industrial computer, and described industrial computer is communicated to connect with first, second PLC respectively by telecommunication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569244.1A CN104315916B (en) | 2014-10-23 | 2014-10-23 | Heat recovery electric-control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569244.1A CN104315916B (en) | 2014-10-23 | 2014-10-23 | Heat recovery electric-control system |
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| Publication Number | Publication Date |
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| CN104315916A CN104315916A (en) | 2015-01-28 |
| CN104315916B true CN104315916B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410569244.1A Active CN104315916B (en) | 2014-10-23 | 2014-10-23 | Heat recovery electric-control system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466275A (en) * | 2015-12-31 | 2016-04-06 | 标能和信能源环保技术（天津）有限公司 | Controller of waste heat recovery system |
| CN109402309B (en) * | 2018-11-13 | 2020-08-11 | 辽宁方盛环保科技有限公司 | Method for recovering waste heat of steam released from slag stewing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203275950U (en) * | 2013-04-28 | 2013-11-06 | 广东中节能环保有限公司 | Flue gas waste heat recovery control system |
| CN103994601A (en) * | 2014-06-05 | 2014-08-20 | 上海理工大学 | Independent temperature and humidity control air-conditioning system with heat recovery function |
| CN204214332U (en) * | 2014-10-23 | 2015-03-18 | 机械工业第六设计研究院有限公司 | Heat recovery electric-control system |
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2014
- 2014-10-23 CN CN201410569244.1A patent/CN104315916B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203275950U (en) * | 2013-04-28 | 2013-11-06 | 广东中节能环保有限公司 | Flue gas waste heat recovery control system |
| CN103994601A (en) * | 2014-06-05 | 2014-08-20 | 上海理工大学 | Independent temperature and humidity control air-conditioning system with heat recovery function |
| CN204214332U (en) * | 2014-10-23 | 2015-03-18 | 机械工业第六设计研究院有限公司 | Heat recovery electric-control system |
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