CN101250613A - Pre-heating and cooling-recycle system for quenching medium - Google Patents
Pre-heating and cooling-recycle system for quenching medium Download PDFInfo
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- CN101250613A CN101250613A CNA2008101015140A CN200810101514A CN101250613A CN 101250613 A CN101250613 A CN 101250613A CN A2008101015140 A CNA2008101015140 A CN A2008101015140A CN 200810101514 A CN200810101514 A CN 200810101514A CN 101250613 A CN101250613 A CN 101250613A
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- quenchant
- preheating
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- quenching
- recirculation system
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Abstract
The invention discloses a quenching preheating and cooling circulatory system, belonging to the heat treatment field, which comprises a quenching medium groove and a quenching tank, wherein the quenching tank is connected with a circulatory pipe through a circulating pump, gas-liquid exchangers are installed on the downstream of the circulating pump and the circulatory pipe, and the gas-liquid exchanger is switched with flue gas of an industrial furnace. A connecting pipe which flows to the quenching tank from the quenching medium groove is arranged between the quenching medium groove and the quenching tank through an industrial pump, liquid-liquid exchangers are installed on the downstream of the industrial pump and the connecting pipe. The device conducts the preheating to quenching medium through heat energy which is brought by the flue gas of the industrial furnace, cools down quenching medium through the liquid-liquid exchanger, realizes the automation of the quenching medium preheating and cooling circulation, and blends with an energy environment-friendly industrial furnace flue gas preheating form, which makes the whole operation process simple and easy, recycles energy, saves energy and reduces emission, increases the automatic degree in the heat treatment process, and increases the quality and production rate of quenching elements.
Description
Technical field
The present invention relates to a kind of quenchant preheating, cooling recirculation system that is applicable to that the thermal treatment field is used, be particularly related to and a kind ofly utilize that the heat of being with carries out preheating to quenchant in the industrial furnace flue gas, utilize liquid-liquid interchanger that quenchant is carried out the preheating of refrigerative quenchant, cooling recirculation system.
Background technology
Steel is preheating to proper temperature more than the critical temperature, and cooling is called quenching with the operating procedure that obtains martensitic stucture fast after being incubated.
The purpose of quenching is to improve hardness, intensity, wear resistance to satisfy the use properties of part.The quenching of steel be most important in the thermal treatment process, also be purposes operation the most widely, all using quenching technology as parts such as instrument, measurer, mould, bearing, spring and automobile, tractor, diesel engine, machining lathe, pneumatic tool, boring mechanic, agricultural machinery and implement, petroleum machinery, chemical machinery, textile manufacturing machine, aircrafts.
Workpiece carries out the employed medium of quench cooled and is called quenchant.The condition that the ideal quenchant should possess is to make workpiece can quench into martensite, unlikelyly again causes too big quenching stress.
The use of quenchant is that certain temperature range is arranged, and needs preheating down in limited time when temperature is lower than, and just needs cooling in limited time when temperature is higher than.
The pre-heating mean of existing quenchant mainly contains following several: preheating of fuel, steam preheating and electrical pre-heating, and most of the most frequently used be to adopt preheating scrap, again the steel scrap after the preheating is put into quenchant, to reach the purpose of quenchant preheating.
The method of Cooling Quenching medium mainly contains two types: the one, change the method for cooling of quenchant: when workpiece quenches constantly to the lower quenchant of quenching tank bottom implantation temperature, and the medium that is preheated is discharged from the overflow groove on quenching tank top, flow into big underground special-purpose quenchant storage tanks, or the refrigerative method is concentrated in employing, medium temperature is reduced, recycle.The 2nd, do not change quenching and cooling method.
Simultaneously traditional hardening step is, in the fixed quenching tank, utilize the quenching workpiece of repeatedly slinging put into quenchant realize to quenchant stirring, make its temperature even, thereby reach quenching effect preferably.
Defective such as all there is complicated operation in the above-mentioned quenchant preheating and the type of cooling, waste energy.
Summary of the invention
The technical issues that need to address of the present invention are to overcome the defective of existing quenchant preheating, the existing operation inconvenience of the type of cooling and energy dissipation, and a kind of quenchant preheating, cooling recirculation system are provided.The present invention utilizes that the heat of being with carries out preheating to quenchant in the industrial furnace flue gas, utilize liquid-liquid interchanger that quenchant is cooled off, realized the automatization of quenchant preheating, refrigeration cycle, and incorporated the industrial furnace smoke pre-heating form of energy environment protection, make the entire operation process simple, energy recycle, energy-saving and emission-reduction, improve the level of automation of treatment production, improved the quality and the productivity of quenching part.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of quenchant preheating of the present invention, cooling recirculation system, comprise quenchant groove and quenching tank, described quenching tank connects one road circulating line by a recycle pump, on recycle pump downstream, the circulating line gas liquid exchanger is installed, described gas liquid exchanger access industrial kiln gas.Recycle pump is squeezed into gas liquid exchanger with the quenchant in the quenching tank, utilizes the high temperature of industrial furnace flue gas that quenchant is carried out preheating, and the quenchant after the last preheating flow back in the quenching tank, has realized the preheating to quenchant.
Be provided with the connecting tube of a route quenchant concentrated flow by an industrial pump between described quenchant groove and the quenching tank, a liquid-liquid interchanger is installed on industrial pump downstream, the connecting tube to quenching tank.In the workpiece quenching process,, the quenchant in the quenchant groove is squeezed in the quenching tank after liquid-liquid interchanger cooling by industrial pump for keeping the temperature of quenching tank medium.
Described quenching tank is provided with an overflow spout that flows to the quenchant groove.Enter in the quenchant groove after the quenchant overflow in the quenching tank, so circulation.
Described circulating line cocycle pump downstream, gas liquid exchanger provided upstream are equipped with one road adjusting pipeline that flows to the quenchant groove, to make things convenient for the adjusting of quenchant.
On the circulating line, between recycle pump and the gas liquid exchanger strainer is installed; To guarantee the quality of quenchant, the strainer upstream is equipped with Electric Actuated Wedge Gate Valves, and the gas liquid exchanger downstream is equipped with Electric Actuated Wedge Gate Valves, Wedge Gate Valves and lift check valve successively, to make things convenient for the control of pipeline.
Between industrial pump and liquid-liquid interchanger strainer is installed on the described connecting tube, to guarantee the quality of quenchant, liquid-liquid interchanger downstream is equipped with Electric Actuated Wedge Gate Valves, Wedge Gate Valves and lift check valve successively, to make things convenient for the control of pipeline
Described adjusting pipeline is provided with Electric Actuated Wedge Gate Valves, to make things convenient for the control of pipeline.
On the described circulating line, be provided with one tunnel fine setting pipeline between recycle pump downstream and the gas liquid exchanger downstream, with the temperature of further adjusting quenchant.
Be provided with temperature sensor in the described quenching tank.Temperature sensor in the quenching tank is controlled pre-heating system round-robin temperature, and when temperature sensor detected that quench media temperature reaches design temperature in the quenching tank, prewarming circulating system quit work.
The beneficial effect of technical scheme provided by the invention is:
1, quenchant preheating of the present invention, cooling recirculation system, owing to utilize the industrial furnace flue gas that quenchant is carried out preheating, want direct discharged flue gas to carry out effective utilization to this, therefore contrasting traditional way has saved the energy widely, realized energy recycling, not only realize environmental protection, can also reduce the production cost of hardening step.
2, quenchant preheating of the present invention, cooling recirculation system owing to avoided traditional operating method, can significantly improve the accuracy of quenchant preheating temperature, thereby improve the quenching quality of workpiece.
3, quenchant preheating of the present invention, cooling recirculation system, owing to adopt the automatization control of pre-heating system and cooling system, therefore simple to operation, can realize unmanned.
4, quenchant preheating of the present invention, cooling recirculation system are simple in structure, and low cost of manufacture can reduce operator, thereby can significantly reduce production costs in operation, increase economic efficiency, and has bigger industrial utilization.
Quenchant preheating of the present invention, cooling recirculation system, simple in structure, easy to operate, energy environment protection has improved workpiece quenching quality and production efficiency.
Description of drawings
Fig. 1 is quenchant preheating of the present invention, cooling recirculation system schematic diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
A kind of quenchant preheating of the present invention, cooling recirculation system, comprise quenchant groove 1 and quenching tank 2, described quenching tank connects one road circulating line 11 by a recycle pump 9, gas liquid exchanger 10 is installed, described gas liquid exchanger access industrial kiln gas on recycle pump downstream, the circulating line.Recycle pump is squeezed into gas liquid exchanger with the quenchant in the quenching tank, utilizes the high temperature of industrial furnace flue gas that quenchant is carried out preheating, and the quenchant after the last preheating flow back in the quenching tank, has realized the preheating to quenchant.
Be provided with the connecting tube 12 of a route quenchant concentrated flow by an industrial pump 3 between described quenchant groove and the quenching tank, a liquid-liquid interchanger 5 is installed on industrial pump downstream, the connecting tube to quenching tank.In the workpiece quenching process,, the quenchant in the quenchant groove is squeezed in the quenching tank after liquid-liquid interchanger cooling by industrial pump for keeping the temperature of quenching tank medium.
Described quenching tank is provided with an overflow spout 13 that flows to the quenchant groove.Enter in the quenchant groove after the quenchant overflow in the quenching tank, so circulation.
Described circulating line cocycle pump downstream, gas liquid exchanger provided upstream are equipped with one road adjusting pipeline 14 that flows to the quenchant groove, to make things convenient for the adjusting of quenchant.
On the circulating line, between recycle pump and the gas liquid exchanger strainer 4 is installed; To guarantee the quality of quenchant, the strainer upstream is equipped with Electric Actuated Wedge Gate Valves 6, and the gas liquid exchanger downstream is equipped with Electric Actuated Wedge Gate Valves 6, Wedge Gate Valves 7 and lift check valve 8 successively, to make things convenient for the control of pipeline.
Between industrial pump and liquid-liquid interchanger strainer 4 is installed on the described connecting tube, to guarantee the quality of quenchant, liquid-liquid interchanger downstream is equipped with Electric Actuated Wedge Gate Valves 6, Wedge Gate Valves 7 and lift check valve 8 successively, to make things convenient for the control of pipeline
Described adjusting pipeline is provided with Electric Actuated Wedge Gate Valves 6, to make things convenient for the control of pipeline.
On the described circulating line, be provided with one tunnel fine setting pipeline 15 between recycle pump downstream and the gas liquid exchanger downstream, with the temperature of further adjusting quenchant.
Be provided with temperature sensor in the described quenching tank.Temperature sensor in the quenching tank is controlled pre-heating system round-robin temperature, and when temperature sensor detected that quench media temperature reaches design temperature in the quenching tank, prewarming circulating system quit work.
The direction of arrow among Fig. 1 is the quenchant flow direction.
Quenchant preheating of the present invention, cooling recirculation system, simple in structure, easy to operate, energy environment protection has improved workpiece quenching quality and production efficiency.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of quenchant preheating, cooling recirculation system, comprise quenchant groove and quenching tank, it is characterized in that: described quenching tank connects one road circulating line by a recycle pump, on recycle pump downstream, the circulating line gas liquid exchanger is installed, described gas liquid exchanger access industrial kiln gas.
2, quenchant preheating as claimed in claim 1, cooling recirculation system, it is characterized in that: be provided with the connecting tube of a route quenchant concentrated flow by an industrial pump between described quenchant groove and the quenching tank, a liquid-liquid interchanger is installed on industrial pump downstream, the connecting tube to quenching tank.
3, quenchant preheating as claimed in claim 2, cooling recirculation system is characterized in that: described quenching tank is provided with an overflow spout that flows to the quenchant groove.
4, quenchant preheating as claimed in claim 3, cooling recirculation system is characterized in that: described circulating line cocycle pump downstream, gas liquid exchanger provided upstream are equipped with one road adjusting pipeline that flows to the quenchant groove.
5, quenchant preheating as claimed in claim 4, cooling recirculation system is characterized in that: on the circulating line, between recycle pump and the gas liquid exchanger strainer is installed; The strainer upstream is equipped with Electric Actuated Wedge Gate Valves, and the gas liquid exchanger downstream is equipped with Electric Actuated Wedge Gate Valves, Wedge Gate Valves and lift check valve successively.
6, quenchant preheating as claimed in claim 5, cooling recirculation system, it is characterized in that: between industrial pump and liquid-liquid interchanger strainer is installed on the described connecting tube, liquid-liquid interchanger downstream is equipped with Electric Actuated Wedge Gate Valves, Wedge Gate Valves and lift check valve successively.
7, quenchant preheating as claimed in claim 6, cooling recirculation system is characterized in that: described adjusting pipeline is provided with Electric Actuated Wedge Gate Valves.
8, quenchant preheating as claimed in claim 7, cooling recirculation system is characterized in that: on the described circulating line, be provided with one tunnel fine setting pipeline between recycle pump downstream and the gas liquid exchanger downstream.
9, as arbitrary described quenchant preheating, the cooling recirculation system of claim 1-7, it is characterized in that: be provided with temperature sensor in the described quenching tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101015140A CN101250613A (en) | 2008-03-07 | 2008-03-07 | Pre-heating and cooling-recycle system for quenching medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101015140A CN101250613A (en) | 2008-03-07 | 2008-03-07 | Pre-heating and cooling-recycle system for quenching medium |
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| CN101250613A true CN101250613A (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101015140A Pending CN101250613A (en) | 2008-03-07 | 2008-03-07 | Pre-heating and cooling-recycle system for quenching medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482725A (en) * | 2009-07-24 | 2012-05-30 | 蒂森克虏伯钢铁欧洲股份公司 | Method And Device For Energy-efficient Hot Forming |
| CN103432805A (en) * | 2013-09-09 | 2013-12-11 | 唐山舒适五金工具制造有限公司 | Steel spade heat treatment liquid recovery furnace and recovery method |
| CN105283728A (en) * | 2012-11-19 | 2016-01-27 | 施瓦兹有限公司 | Roller hearth furnace and method for the heat treatment of metal sheets |
| 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 |
| CN110172551A (en) * | 2019-05-20 | 2019-08-27 | 南宁学院 | Heat treatment quenching liquid cooling system |
| CN110699524A (en) * | 2019-11-26 | 2020-01-17 | 中国兵器工业新技术推广研究所 | Quenching device |
| CN110791632A (en) * | 2019-12-20 | 2020-02-14 | 南京天马轴承有限公司 | Novel roller quenching groove recirculated cooling water energy-saving control device |
-
2008
- 2008-03-07 CN CNA2008101015140A patent/CN101250613A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482725A (en) * | 2009-07-24 | 2012-05-30 | 蒂森克虏伯钢铁欧洲股份公司 | Method And Device For Energy-efficient Hot Forming |
| CN105283728A (en) * | 2012-11-19 | 2016-01-27 | 施瓦兹有限公司 | Roller hearth furnace and method for the heat treatment of metal sheets |
| CN105283728B (en) * | 2012-11-19 | 2017-04-26 | 施瓦兹有限公司 | Roller hearth furnace and method for the heat treatment of metal sheets |
| CN103432805A (en) * | 2013-09-09 | 2013-12-11 | 唐山舒适五金工具制造有限公司 | Steel spade heat treatment liquid recovery furnace and recovery method |
| 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 |
| CN110172551A (en) * | 2019-05-20 | 2019-08-27 | 南宁学院 | Heat treatment quenching liquid cooling system |
| CN110699524A (en) * | 2019-11-26 | 2020-01-17 | 中国兵器工业新技术推广研究所 | Quenching device |
| CN110791632A (en) * | 2019-12-20 | 2020-02-14 | 南京天马轴承有限公司 | Novel roller quenching groove recirculated cooling water energy-saving control device |
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Open date: 20080827 |