CN202692718U - Flue pressure automatic control system for smoke waste heat recovery - Google Patents
Flue pressure automatic control system for smoke waste heat recovery Download PDFInfo
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- CN202692718U CN202692718U CN2012201417206U CN201220141720U CN202692718U CN 202692718 U CN202692718 U CN 202692718U CN 2012201417206 U CN2012201417206 U CN 2012201417206U CN 201220141720 U CN201220141720 U CN 201220141720U CN 202692718 U CN202692718 U CN 202692718U
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- flue
- waste heat
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- heat recovery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model discloses a flue pressure automatic control system for recycling smoke waste heat, which comprises a heating furnace (10), a flue (11), heat recovery boiler (20) arranged on the flue, a primary induced draft fan (14), and a pressure measuring probe (30) arranged on the flue, wherein the pressure measuring probe is inserted into a pressure differential wind pressure convertor (40); after connected with a PLC controller (50), the pressure differential wind pressure convertor is inserted into a secondary induced draft fan frequency convertor (60); the secondary induced draft fan frequency convertor (60) is output and inserted into a secondary induced draft fan (70); the secondary induced draft fan is arranged from an output end of the heat recovery boiler (20) to a flue of a chimney, so as to ensure that pressure of the flue is within a certain range and normal operation of the heating furnace is not affected with an installation of a smoke waste heat recovery device, and therefore flue operation in a smoke waste heat recovery system is reliably improved and guaranteed in a normal pressure range.
Description
Technical field
The utility model relates to a kind of flue gas waste heat recovery system, especially relates to the flue pressure automatic control system of a kind of use in flue gas waste heat recovery system.
Background technology
Along with the work propelling of social progress and energy-saving and emission-reduction policy, various waste heat recovery apparatus constantly are applied on the effective energy saving means; And the flue gas waste heat recovery system technology is also ripe gradually, and be applied on a large scale in the actual production, and common flue gas waste heat recovery system technology is: flue gas waste heat recovery apparatus is installed on the heating furnace flue, so that the flue gas that heating furnace produces enters in the atmosphere by chimney after being introduced into flue gas waste heat recovery apparatus; And the problem that exists in the flue gas waste heat recovery technology of routine is exactly: in actual moving process, owing to having increased flue gas waste heat recovery apparatus, so that the pressure oscillation at furnace outlet flue place is larger, thereby caused the pressure oscillation of heating furnace burner, on the certain impact of normal operation generation of heating furnace; The efficient that is unfavorable for heating furnace itself guarantees.
The day for announcing is that the granted patent ZL201020299378.3 on January 19th, 2011 discloses a kind of flue gas waste heat recovery system, comprise boiler, flue, air duct, comprise that also at least one is arranged on the flue gas heat-exchange unit in the flue, flue gas heat-exchange unit comprises heat absorbing units, and the upper end of heat absorbing units, lower end are respectively arranged with the first upper collecting chamber, the first lower header; At least one is arranged on the air heat exchanger in the air duct, and air heat exchanger comprises the heat release unit, and the upper end of heat release unit, lower end are respectively arranged with the second upper collecting chamber, the second lower header; A vapor uptake that is used for connecting the first upper collecting chamber and the second upper collecting chamber; A liquid down-comer that is used for connecting the first lower header and the second lower header; Be provided with vent valve and gas injection valve on the vapor uptake, be provided with liquid-filling valve on the liquid down-comer; Be filled with the heating agent as the intermediate heat carrier in the heat absorbing units of flue gas heat-exchange unit.Although this flue gas waste heat recovery system has higher heat exchange efficiency, but also exist to a certain extent the pressure oscillation ratio variation that the flue gas heat-exchange unit that reckons without the flue place adds and cause the flue place, adverse effect problem.
The utility model content
The utility model easily produces a kind of pressure oscillation that can effectively reduce, control the flue place that the larger present situations such as pressure oscillation provide for solving in flue in the existing flue gas waste heat recovery system, thereby improve the flue pressure automatic control system of the flue gas waste heat recovery of the normal operation of heating furnace.
The utility model is to solve the problems of the technologies described above the concrete technical scheme that adopts to be: a kind of flue pressure automatic control system of flue gas waste heat recovery, comprise heating furnace, the flue that is connected with heating furnace, be located at the waste heat boiler on the flue, an air-introduced machine, it is characterized in that: flue is provided with the pressure measxurement probe, the pressure measxurement probe accesses in the differential blast converter through pressure guiding pipe, differential blast converter be connected in the secondary air-introduced machine frequency converter after the PLC controller is connected, the output of secondary air-introduced machine frequency converter connects in the secondary air-introduced machine, and the secondary air-introduced machine is located at the waste heat boiler output to the flue of chimney.Pressure information on the flue that pressure measxurement is detected is transmitted timely and in time control is revised, thereby guarantee that flue pressure keeps within the specific limits, reach the normal operation that can not have influence on because of the access of flue gas waste heat recovery apparatus heating furnace, the reliable raising guaranteed that the flue in the flue gas waste heat recovery system is operated in the normally-pressured neighbor.
As preferably, described flue is provided with the pneumatic dish valve of flue.When being further implemented in flue gas waste heat recovery apparatus and breaking down and the automatic switchover of former flue, to guarantee the security of system operation.
As preferably, the pneumatic dish valve of described flue is located at respectively on the flue between air-introduced machine and the chimney, on the flue on the flue between air-introduced machine and the waste heat boiler, between waste heat boiler output and the chimney.When being further implemented in flue gas waste heat recovery apparatus and breaking down and the automatic switchover of former flue, to guarantee the security of system operation.
The beneficial effects of the utility model are: the pressure information on the flue that pressure measxurement is detected is transmitted timely and in time control is revised, thereby guarantee that flue pressure keeps within the specific limits, reach the normal operation that can not have influence on because of the access of flue gas waste heat recovery apparatus heating furnace, the reliable raising guaranteed that the flue in the flue gas waste heat recovery system is operated in the normally-pressured neighbor, improved the normal operation of heating furnace.
Description of drawings:
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the structural representation of preferred embodiment of the flue pressure automatic control system of the utility model flue gas waste heat recovery.
The specific embodiment
Among the embodiment shown in Figure 1, a kind of flue pressure automatic control system of flue gas waste heat recovery, comprise heating furnace 10, the flue 11 that is connected with heating furnace 10, be installed in the waste heat boiler 20 on the flue 11, an air-introduced machine 14, pressure measxurement probe 30 is installed on the flue 11, pressure measxurement probe 30 is in the differential blast converter 40 of pressure guiding pipe 31 accesses, differential blast converter 40 be connected in the secondary air-introduced machine frequency converter 60 after PLC controller 50 is connected, 60 outputs of secondary air-introduced machine frequency converter connect in the secondary air-introduced machine 70, and secondary air-introduced machine 70 is installed in waste heat boiler 20 outputs to the flue of chimney 13.Be equipped with on the flue 11 that the pneumatic dish valve 12 of 12, three flues of the pneumatic dish valve of flue is installed in respectively on the flue between 14 outlets of air-introduced machine and the chimney 13, on the flue on the flue between air-introduced machine 14 outlets and the waste heat boiler 20, between waste heat boiler 20 outputs and the chimney 13.
During work, pressure probe 30 is at air-introduced machine 14 exit position gaging pressures, by pressure guiding pipe 31 and differential blast converter 40 signal is delivered to PLC controller 50, the signal function that PLC controller 50 passes through to collect is in overfire air fan frequency converter 60, the motor speed of control secondary air-introduced machine 70, the outlet pressure value that guarantees an air-introduced machine 14 remains in the setting range, thereby prevents heating furnace 10 burner pressure oscillations, realizes flue gas waste heat recovery apparatus flue pressure automatic control.Pneumatic dish valve 12 functions of three flues on the flue on the flue on the flue between air-introduced machine 14 and the chimney 13, between air-introduced machine 14 and the waste heat boiler 20, between waste heat boiler 20 outputs and the chimney 13 are in order to realize when flue gas waste heat recovery apparatus breaks down and the automatic switchover of former flue, to guarantee the security of system operation.
Although this paper has more used the terms such as heating furnace, waste heat boiler, pressure measxurement probe, differential blast converter, pressure guiding pipe, secondary air-introduced machine frequency converter, air-introduced machine, the pneumatic dish valve of flue; But do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (3)
1. the flue pressure automatic control system of a flue gas waste heat recovery, comprise heating furnace (10), the flue (11) that is connected with heating furnace (10), be located at the waste heat boiler (20) on the flue (11), an air-introduced machine (14), it is characterized in that: flue (11) is provided with pressure measxurement probe (30), pressure measxurement probe (30) is in pressure guiding pipe (31) the differential blast converter of access (40), differential blast converter (40) be connected in the secondary air-introduced machine frequency converter (60) after PLC controller (50) is connected, secondary air-introduced machine frequency converter (60) output connects in the secondary air-introduced machine (70), and secondary air-introduced machine (70) is located at waste heat boiler (20) output to the flue of chimney (13).
2. according to the flue pressure automatic control system of flue gas waste heat recovery claimed in claim 1, it is characterized in that: described flue (11) is provided with the pneumatic dish valve of flue (12).
3. according to the flue pressure automatic control system of flue gas waste heat recovery claimed in claim 1, it is characterized in that: the pneumatic dish valve of described flue (12) is located at respectively on the flue between an air-introduced machine (14) and the chimney (13), on the flue on the flue between an air-introduced machine (14) and the waste heat boiler (20), between waste heat boiler (20) output and the chimney (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201417206U CN202692718U (en) | 2012-04-06 | 2012-04-06 | Flue pressure automatic control system for smoke waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201417206U CN202692718U (en) | 2012-04-06 | 2012-04-06 | Flue pressure automatic control system for smoke waste heat recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692718U true CN202692718U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201417206U Expired - Fee Related CN202692718U (en) | 2012-04-06 | 2012-04-06 | Flue pressure automatic control system for smoke waste heat recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692718U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344123A (en) * | 2013-07-09 | 2013-10-09 | 上海宝钢节能技术有限公司 | Steel rolling production line smoke waste heat recovery system and waste heat recovery method |
| CN103412513A (en) * | 2013-08-15 | 2013-11-27 | 山东方圆建筑工程检测中心 | Flue gas flow velocity wedge disc automatic control device for combustion test |
| CN108613211A (en) * | 2018-06-08 | 2018-10-02 | 江苏双良新能源装备有限公司 | A kind of bypass type flue gas waste heat recovery system and its take cigarette control method |
| CN113048801A (en) * | 2021-03-15 | 2021-06-29 | 首钢集团有限公司 | Waste heat recovery control system and method for hot rolling heating furnace |
-
2012
- 2012-04-06 CN CN2012201417206U patent/CN202692718U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344123A (en) * | 2013-07-09 | 2013-10-09 | 上海宝钢节能技术有限公司 | Steel rolling production line smoke waste heat recovery system and waste heat recovery method |
| CN103412513A (en) * | 2013-08-15 | 2013-11-27 | 山东方圆建筑工程检测中心 | Flue gas flow velocity wedge disc automatic control device for combustion test |
| CN108613211A (en) * | 2018-06-08 | 2018-10-02 | 江苏双良新能源装备有限公司 | A kind of bypass type flue gas waste heat recovery system and its take cigarette control method |
| CN113048801A (en) * | 2021-03-15 | 2021-06-29 | 首钢集团有限公司 | Waste heat recovery control system and method for hot rolling heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130406 |