CN102767968A - Quenching furnace waste heat recovery system and its control method - Google Patents
Quenching furnace waste heat recovery system and its control method Download PDFInfo
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- CN102767968A CN102767968A CN2012102813816A CN201210281381A CN102767968A CN 102767968 A CN102767968 A CN 102767968A CN 2012102813816 A CN2012102813816 A CN 2012102813816A CN 201210281381 A CN201210281381 A CN 201210281381A CN 102767968 A CN102767968 A CN 102767968A
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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
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Abstract
The invention relates to a quenching furnace waste heat recovery system, which comprises a prefilter arranged in a high-temperature oil tank of a quenching furnace. The extracted high-temperature oil is delivered to a heat exchange unit through the prefilter, a pipeline and a high-temperature oil pump module in sequence, the heat exchange unit transports low-temperature oil through a low-temperature oil pipeline to a quenching path high-temperature oil tank, meanwhile an external water source sequentially passes through a first cut-off valve, a filtration scale-inhibition module, a first solenoid valve, a second cut-off valve, a first one-way valve and a water circulating pump to exchange heat in the heat exchange unit. The system is provided with a programmable logic controller (PLC), which is in data connection with a temperature sensor arranged on the heat exchange unit and a heat insulation water tank and a liquid level switch, and controls each of solenoid valves. By guiding high-temperature oil in the high-temperature oil tank to arrive at a heat exchanger via a plurality of valves and modules, heat exchange between the high-temperature oil and external water is realized, at the same time water in the heat insulation water tank is carried out heat insulation. The invention also provides a method for controlling the quenching furnace waste heat recovery system.
Description
Technical field
The present invention relates to the corollary equipment of glowing furnace, especially a kind of glowing furnace waste heat recovery is
System
Background technology
In the high temperature oil groove in the glowing furnace great amount of heat is arranged; But this heat all is to cool away in vain and be not used usually; The waste of indirect a large amount of heat energy; Convert hot water supply into if can this heat be used, such equipment can rationally use the suitable environmental protection of heat.
Summary of the invention
The objective of the invention is to, provide a kind of glowing furnace waste heat recovery to be
System
The utility model solves the technical scheme that technical problem adopted that is proposed in the background technology:
A kind of glowing furnace residual neat recovering system; It is characterized in that: native system comprises the prefilter that is arranged in the glowing furnace high temperature oil groove; The high temperature oil that extracts is passed to heat-exchanger rig through pipeline and high temperature oil pump assembly again through prefilter; Said heat-exchanger rig is sent low temperature oil back to quenching road high temperature oil groove through the low temperature oil-piping; External water source arrives in the heat-exchanger rig through first stop valve, filtration scale inhibition assembly, first magnetic valve, second stop valve, first check valve and water circulating pump assembly successively and carries out heat exchange simultaneously; Said heat-exchanger rig is given attemperater through output channel 26 with delivery; Attemperater is provided with the warm water delivery outlet, is provided with the liquid-level switch and first temperature sensor in the said attemperater, and the water at low temperature output of said attemperater is connected with the input of water circulating pump assembly through second magnetic valve; Native system is provided with a PLC controller and is arranged on heat-exchanger rig and is connected said each electromagnetic valve switch of PLC controller control with temperature sensor and liquid-level switch data on the attemperater.
Said high temperature oil pump assembly comprises the 3rd stop valve, accurate filter, oil pump, second check valve and the 4th stop valve successively, and said water circulating pump assembly comprises the 5th stop valve, water circulating pump, the 3rd check valve, the 6th stop valve successively.
Said filtration scale inhibition assembly comprises pipe line filter and antisludging equipment successively.
The said TEMP implement body that is arranged on heat-exchanger rig comprises second temperature sensor that is arranged on the heat-exchanger rig output end of hot water and the three-temperature sensor that is arranged on high temperature oil pump assembly output.
After adopting technical scheme of the present invention: through guiding to the high temperature oil of high temperature oil groove; Make it pass through several valve groups and arrive heat exchanger; Realized heat exchange; Then with the delivery after the heat exchange to attemperater, its external water source-heat exchanger-attemperater has constituted a big secondary water heat cycles earlier, simultaneously attemperater-heat exchanger-attemperater has constituted a partial circulating that the water in the attemperater is heated once again again; Perfection has realized high temperature oil and secondary water are carried out heat exchange, and the process that again water in the attemperater is incubated simultaneously.
To the top technology that proposes, the present invention provides a kind of control method that is used to control the glowing furnace residual neat recovering system again simultaneously, it is characterized in that:
Step 1 is opened native system, starts oil pump 6, makes its extracting high-temperature deep fat in the oil groove 1, filters via prefilter 2 earlier, then successively through piping 3, stop valve 4, accurate filter 5, oil pump 6, get into heat exchangers 10 through check valve 7, stop valve 8 again;
Step 2; Simultaneously the ON cycle water pump 21, and external water source is through stop valve 12 pipe line filters 13, carry out water treatment, pass through magnetic valve 15, stop valve 16, check valve 17, pipeline 18, stop valve 20, water circulating pump 21, check valve 22, stop valve 23, pipeline 24 to heat exchanger 10 again through antisludging equipment 14;
Step 3, external water source carries out degree of depth heat exchange by high temperature oil in heat-exchanger rig, and after the temperature at the external water source of temperature sensor 25 detections rose to rated temperature, the control of PLC controller flowed to attemperater with external water source through pipeline 26;
Step 4, the low temperature oil after the heat exchange comes back in the oil groove 1 through pipeline 11 in heat-exchanger rig;
Step 5, water temperature is lower than 45 ℃ in the attemperater 28 when temperature sensor 29 detects, and liquid-level switch 27 detects in the water tank water level and reaches 30% when above; The PLC controller obtains signal; Then 15 actions of PLC controller control magnetic valve are closed, and the stop supplies of external water source is opened in magnetic valve 19 actions; Water system carries out inner loop via magnetic valve 19, until the attemperater water temperature is heated to rated temperature;
Step 6, the hot water in the attemperater are delivered to through stop valve 30 and use water spot.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Principle design of the present invention: can the high temperature oil in the high temperature oil groove be arrived heat exchanger through several valve groups; Realized heat exchange; Then with the delivery after the heat exchange to attemperater; Its external water source-heat exchanger-attemperater has constituted a big secondary water heat cycles earlier; Attemperater-heat exchanger-attemperater has constituted a partial circulating that the water in the attemperater is heated once again again simultaneously, and perfection has realized high temperature oil and secondary water are carried out heat exchange, and again the water in the attemperater is incubated simultaneously.
In order to realize the above-mentioned design that proposes, the present invention adopts following technical scheme:
Embodiment 1
A kind of glowing furnace residual neat recovering system; Comprise the prefilter 2 that is arranged in the glowing furnace high temperature oil groove; The high temperature oil that extracts is passed to heat-exchanger rig through pipeline 3 and high temperature oil pump assembly again through prefilter; Said heat-exchanger rig is sent low temperature oil back to quenching road high temperature oil groove through the low temperature oil-piping; Simultaneously external water source successively through first stop valve 12, filter scale inhibition assembly, first magnetic valve 15, second stop valve 16, first check valve 17 and water circulating pump assembly and arrive in the heat-exchanger rig and carry out heat exchange, said heat-exchanger rig is given attemperater through output channel 26 with delivery, attemperater is provided with the warm water delivery outlet; Be provided with the liquid-level switch and first temperature sensor 29 in the attemperater; The water at low temperature output of attemperater is connected with the input of water circulating pump assembly through second magnetic valve, and native system is provided with a PLC controller and is arranged on heat-exchanger rig and is connected with temperature sensor and liquid-level switch data on the attemperater, and the PLC controller is controlled each electromagnetic valve switch.
Concrete assembly is constructed as follows in detail; The high temperature oil pump assembly comprises the 3rd stop valve 4, accurate filter 5, oil pump 6, second check valve 7 and the 4th stop valve 8 successively, and the water circulating pump assembly comprises the 5th stop valve 20, water circulating pump 21, the 3rd check valve 22, the 6th stop valve 23 successively; Filter the scale inhibition assembly and comprise pipe line filter 13 and antisludging equipment 14 successively; The TEMP implement body that is arranged on heat-exchanger rig comprises second temperature sensor 25 that is arranged on the heat-exchanger rig output end of hot water and the three-temperature sensor 9 that is arranged on high temperature oil pump assembly output.
Said technical scheme at first flows to heat-exchanger rig through pipeline and high temperature oil pump assembly with high temperature oil by the high temperature oil groove then, and high temperature oil pump assembly output is provided with three-temperature sensor the high temperature oil temperature of importing is detected, after the high temperature oil heat exchange is intact; Low temperature oil after the conversion sends back to the high temperature oil groove by the low temperature oil-piping; The heat-exchanger rig output end of hot water is provided with second temperature sensor, promptly the hot water after the heat exchange is carried out temperature detection, and hot water is to be formed after scale inhibition assembly and water circulating pump assembly reach the heat-exchanger rig heat exchange through filtering successively by secondary water; Delivery is given in the attemperater; Here just constituted a systemic circulation, if simultaneously owing to the long-term obsolete words of water in the attemperater, its temperature also can descend so; Then in attemperater, be provided with the liquid-level switch and first temperature sensor 29; If water temperature drops to rated value, then warm water can arrive in the heat exchange equipment through the water circulating pump assembly and heat, and has realized the process of partial circulating.
In order to realize technical scheme of the present invention, the present invention provides a kind of control method that is used to control the glowing furnace residual neat recovering system again, it is characterized in that simultaneously:
Step 1 is opened native system, starts oil pump 6, makes its extracting high-temperature deep fat in the oil groove 1, filters via prefilter 2 earlier, then successively through piping 3, stop valve 4, accurate filter 5, oil pump 6, get into heat exchangers 10 through check valve 7, stop valve 8 again;
Step 2; Simultaneously the ON cycle water pump 21, and external water source is through stop valve 12 pipe line filters 13, carry out water treatment, pass through magnetic valve 15, stop valve 16, check valve 17, pipeline 18, stop valve 20, water circulating pump 21, check valve 22, stop valve 23, pipeline 24 to heat exchanger 10 again through antisludging equipment 14;
Step 3, external water source carries out degree of depth heat exchange by high temperature oil in heat-exchanger rig, and after the temperature at the external water source of temperature sensor 25 detections rose to rated temperature, the control of PLC controller flowed to attemperater with external water source through pipeline 26;
Step 4, the low temperature oil after the heat exchange comes back in the oil groove 1 through pipeline 11 in heat-exchanger rig;
Step 5, water temperature is lower than 45 ℃ in the attemperater 28 when temperature sensor 29 detects, and liquid-level switch 27 detects in the water tank water level and reaches 30% when above; The PLC controller obtains signal; Then 15 actions of PLC controller control magnetic valve are closed, and the stop supplies of external water source is opened in magnetic valve 19 actions; Water system carries out inner loop via magnetic valve 19, until the attemperater water temperature is heated to rated temperature;
Step 6, the hot water in the attemperater are delivered to through stop valve 30 and use water spot.
This control scheme, whole process is controlled through controller, realizes the formation of automated systemization.
Claims (5)
1. glowing furnace residual neat recovering system; It is characterized in that: native system comprises the prefilter (2) that is arranged in the glowing furnace high temperature oil groove; The high temperature oil that extracts is passed to heat-exchanger rig through pipeline (3) and high temperature oil pump assembly again through prefilter; Said heat-exchanger rig is sent low temperature oil back to quenching road high temperature oil groove through the low temperature oil-piping; External water source arrives in the heat-exchanger rig through first stop valve (12), filtration scale inhibition assembly, first magnetic valve (15), second stop valve (16), first check valve (17) and water circulating pump assembly successively and carries out heat exchange simultaneously; Said heat-exchanger rig is given attemperater through output channel (26) with delivery; Attemperater is provided with the warm water delivery outlet, is provided with liquid-level switch and first temperature sensor (29) in the said attemperater, and the water at low temperature output of said attemperater is connected with the input of water circulating pump assembly through second magnetic valve; Native system is provided with a PLC controller and is arranged on heat-exchanger rig and is connected said each electromagnetic valve switch of PLC controller control with temperature sensor and liquid-level switch data on the attemperater.
2. a kind of glowing furnace residual neat recovering system according to claim 1; It is characterized in that: said high temperature oil pump assembly comprises the 3rd stop valve (4), accurate filter (5), oil pump (6), second check valve (7) and the 4th stop valve (8) successively, and said water circulating pump assembly comprises the 5th stop valve (20), water circulating pump (21), the 3rd check valve (22), the 6th stop valve (23) successively.
3. a kind of glowing furnace residual neat recovering system according to claim 1 and 2 is characterized in that: said filtration scale inhibition assembly comprises pipe line filter (13) and antisludging equipment (14) successively.
4. a kind of glowing furnace residual neat recovering system according to claim 1 and 2 is characterized in that: the said TEMP implement body that is arranged on heat-exchanger rig comprises second temperature sensor (25) that is arranged on the heat-exchanger rig output end of hot water and the three-temperature sensor (9) that is arranged on high temperature oil pump assembly output.
5. control method that is used to control the glowing furnace residual neat recovering system is characterized in that:
Step 1; Open native system, start oil pump (6), make it from the interior extracting high-temperature deep fat of oil groove (1); Filter earlier via prefilter (2), then successively through piping (3), stop valve (4), accurate filter (5), oil pump (6), pass through check valve (7) again, stop valve (8) gets into heat exchanger (10);
Step 2; While ON cycle water pump (21), external water source carries out water treatment, passes through magnetic valve (15), stop valve (16), check valve (17), pipeline (18), stop valve (20), water circulating pump (21), check valve (22), stop valve (23), pipeline (24) to heat exchanger (10) again through stop valve (12) pipe line filter (13), process antisludging equipment (14);
Step 3, external water source carries out degree of depth heat exchange by high temperature oil in heat-exchanger rig, and after the temperature at the external water source of temperature sensor (25) detection rose to rated temperature, the control of PLC controller flowed to attemperater with external water source through pipeline (26);
Step 4, the low temperature oil after the heat exchange comes back in the oil groove (1) through pipeline () 11 in heat-exchanger rig;
Step 5 is lower than (45) ℃ when temperature sensor (29) detects in the attemperater (28) water temperature, and liquid-level switch (27) detects in the water tank water level and reaches 30% when above; The PLC controller obtains signal; Then PLC controller control magnetic valve (15) action is closed, and the stop supplies of external water source is opened in magnetic valve (19) action; Water system carries out inner loop via magnetic valve (19), until the attemperater water temperature is heated to rated temperature;
Step (6), the hot water in the attemperater are delivered to through stop valve (30) and use water spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210281381.6A CN102767968B (en) | 2012-08-08 | 2012-08-08 | Quenching furnace waste heat recovery system and its control method |
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| CN201210281381.6A CN102767968B (en) | 2012-08-08 | 2012-08-08 | Quenching furnace waste heat recovery system and its control method |
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| CN102767968A true CN102767968A (en) | 2012-11-07 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667606A (en) * | 2013-12-12 | 2014-03-26 | 兴发铝业（成都）有限公司 | Energy-saving type heat treatment circulating water system and energy-saving method |
| CN103849731A (en) * | 2012-11-28 | 2014-06-11 | 大连圣特金属新材料研发有限公司 | Automatic quenching oil groove circulation oil apparatus |
| CN104294013A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt tempering heating furnace |
| CN104294017A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt quenching furnace capable of recovering waste heat |
| CN105080870A (en) * | 2015-08-25 | 2015-11-25 | 江苏裕隆锻造有限公司 | Cleaning and heating pool |
| CN106521117A (en) * | 2016-11-30 | 2017-03-22 | 江苏丰东热技术股份有限公司 | Oil cooling circulatory system of quenching tank |
| CN110894568A (en) * | 2019-12-20 | 2020-03-20 | 南通辑兴紧固件科技有限公司 | Environment-friendly fastener quenching system and process |
| CN111485079A (en) * | 2020-05-27 | 2020-08-04 | 秦皇岛信能能源设备有限公司 | Quenching tank waste heat recycling system and control method |
| CN113604644A (en) * | 2021-07-29 | 2021-11-05 | 宁波晟光金属制品有限公司 | Hot water heat energy recovery system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103849731A (en) * | 2012-11-28 | 2014-06-11 | 大连圣特金属新材料研发有限公司 | Automatic quenching oil groove circulation oil apparatus |
| CN103667606A (en) * | 2013-12-12 | 2014-03-26 | 兴发铝业（成都）有限公司 | Energy-saving type heat treatment circulating water system and energy-saving method |
| CN104294013A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt tempering heating furnace |
| CN104294017A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt quenching furnace capable of recovering waste heat |
| CN105080870A (en) * | 2015-08-25 | 2015-11-25 | 江苏裕隆锻造有限公司 | Cleaning and heating pool |
| CN106521117A (en) * | 2016-11-30 | 2017-03-22 | 江苏丰东热技术股份有限公司 | Oil cooling circulatory system of quenching tank |
| CN110894568A (en) * | 2019-12-20 | 2020-03-20 | 南通辑兴紧固件科技有限公司 | Environment-friendly fastener quenching system and process |
| CN111485079A (en) * | 2020-05-27 | 2020-08-04 | 秦皇岛信能能源设备有限公司 | Quenching tank waste heat recycling system and control method |
| CN111485079B (en) * | 2020-05-27 | 2023-09-08 | 秦皇岛信能能源设备有限公司 | Quenching tank waste heat recycling system and control method |
| CN113604644A (en) * | 2021-07-29 | 2021-11-05 | 宁波晟光金属制品有限公司 | Hot water heat energy recovery system |
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| CN102767968B (en) | 2014-11-05 |
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