CN111286589B - Air cooling system for horizontal vacuum high-pressure gas quenching furnace with air flow capable of being alternated up and down - Google Patents
Air cooling system for horizontal vacuum high-pressure gas quenching furnace with air flow capable of being alternated up and down Download PDFInfo
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- CN111286589B CN111286589B CN202010242806.7A CN202010242806A CN111286589B CN 111286589 B CN111286589 B CN 111286589B CN 202010242806 A CN202010242806 A CN 202010242806A CN 111286589 B CN111286589 B CN 111286589B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
Abstract
The invention discloses an air cooling system for a horizontal vacuum high-pressure gas quenching furnace with up-down alternative airflow, which adopts an internal circulation bilateral symmetry structure with high space utilization rate and comprises the following components: the fan, the impeller, the volute, the wind scooper, the lifting frame, the inner sealing plate, the side sealing plate, the wind deflector, the heat exchanger and the like. Wherein: the air deflector is connected with the heat exchanger and is used for guiding the gas flowing out of the air outlet of the volute into the heat exchanger, and the gas is blown to the workpiece along the internal partition plate of the heat exchanger; the lifting frame is arranged between the wind scooper and the inner sealing plate, and can guide the gas flowing through the heat exchanger into the wind scooper and into the impeller flow channel; the lifting frame is driven by the cylinder to realize wind direction switching through lifting. The air cooling system is compact in structure and high in space utilization rate, and the cooling mode that cooling air flow blows up and down alternately is favorable for improving the cooling uniformity in the air quenching process, so that the uniformity of the structure and performance of a workpiece is improved, and the deformation of the workpiece is reduced.
Description
Technical Field
The invention relates to an air cooling system for a horizontal vacuum high-pressure gas quenching furnace, in particular to an air cooling system for a horizontal vacuum high-pressure gas quenching furnace, which can realize up-down alternating airflow.
Background
The heat treatment is a process technology which gives or improves the service performance of the workpiece and fully exerts the potential of materials by changing the microstructure in the workpiece or changing the chemical components on the surface of the workpiece. Vacuum high-pressure gas quenching is a heat treatment technology developed in recent years, inert gases such as high-purity nitrogen or argon are used as a quenching cooling medium, the quenching cooling medium has the advantages of cleanness, no pollution, no need of subsequent cleaning, easy adjustment of quenching strength and the like, and is widely applied to the fields of aerospace, war industry, automobiles and the like.
At present, vacuum high-pressure gas quenching generally adopts two modes of 360-degree air-jet cooling along the circumferential direction and air-flow one-way air-jet cooling. Under the condition of multi-workpiece charging, the cooling of the external workpiece is easy to cause fast cooling and slow cooling of the internal workpiece by blowing air at 360 degrees along the circumferential direction; and the cooling of the airflow unidirectional air jet can make the cooling speed of the workpiece gradually slow down along the airflow direction. Both of the two cooling modes easily cause uneven structure and performance of two sides of a single workpiece and among different workpieces, and the workpiece deforms greatly. In addition, in recent years, an up-and-down alternative air blowing cooling mode is provided, and although the problems of deformation, organization and uneven performance of workpieces are effectively solved, the horizontal vacuum high-pressure air quenching furnace adopts an external circulation air cooling system, so that the equipment integration level is low, the occupied space is large, the manufacturing cost is high, and the use energy efficiency is low.
Disclosure of Invention
The invention aims to provide an air cooling system for a horizontal vacuum high-pressure gas quenching furnace, which can realize up-down alternating airflow.
The purpose of the invention is realized by the following technical scheme:
the invention relates to an air cooling system for a horizontal vacuum high-pressure gas quenching furnace with up-down alternative airflow, which has the preferred specific implementation mode that:
an internal circulation bilateral symmetry structure is adopted, and the structure comprises a fan, an impeller, a volute, an air guide cover, a lifting frame, an inner sealing plate, a side sealing plate, an air guide plate and a heat exchanger;
the impeller is a centrifugal impeller, is connected with an output shaft of the fan and is arranged in the volute, and the volute is provided with a central inlet and an upper outlet and a lower outlet;
the wind scooper is arranged at the front end of the central inlet of the impeller and used for guiding the gas in the lifting frame into the impeller;
the heat exchanger is a tube-fin heat exchanger, and a partition plate is arranged in the middle of the heat exchanger and used for guiding airflow;
the lifting frame, the inner sealing plate, the side sealing plates and the inner wall of the furnace shell form a closed space, and a gas inlet and a gas outlet which are connected with the heat exchanger are respectively arranged at the upper part and the lower part of the closed space;
the lifting frame is arranged between the wind scooper and the inner sealing plate and used for guiding gas flowing through the heat exchanger into the wind scooper, and the lifting frame is driven by the cylinder to realize wind direction switching through lifting;
the air deflector is connected with the heat exchanger and used for guiding the gas flowing out of the air outlet of the volute into the heat exchanger, and the gas is blown to the workpiece along the internal partition plate of the heat exchanger.
According to the technical scheme provided by the invention, the air cooling system for the horizontal vacuum high-pressure air quenching furnace, which is provided by the embodiment of the invention, has the advantages of compact structure, small occupied space, low manufacturing cost and high use energy efficiency, and can improve the cooling uniformity in the air quenching process by alternately cooling the air flow up and down, thereby improving the uniformity of the structure and performance of a workpiece and reducing the deformation of the workpiece. Solves the problem of large deformation of the workpiece in the high-pressure gas quenching process.
Drawings
Fig. 1 and fig. 2 are schematic top and front view structural diagrams of an air cooling system for a horizontal vacuum high-pressure gas quenching furnace, provided by an embodiment of the invention, with vertically alternating air flow, respectively;
FIG. 3 is a schematic view of the airflow direction during cooling by the top-down air-jet according to the embodiment of the present invention;
FIG. 4 is a schematic view illustrating the flow direction of the volute and the air deflector during cooling by the top-down air-jet according to the embodiment of the present invention;
FIG. 5 is a schematic view illustrating the flow direction of the air flow during cooling by bottom-up air-jet according to the embodiment of the present invention;
fig. 6 is a schematic view illustrating the flow direction of the volute and the air deflector during cooling by bottom-up air spraying according to an embodiment of the present invention.
In the figure:
1. the air conditioner comprises a fan, 2 parts of impellers, 3 parts of volutes, 4 parts of air guiding covers, 5 parts of lifting frames, 6 parts of inner sealing plates, 7 parts of side sealing plates, 8 parts of air guiding plates and 9 parts of heat exchangers.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The air cooling system for the horizontal vacuum high-pressure air quenching furnace with the air flow capable of being alternated up and down is shown in a preferred embodiment of the air cooling system in figures 1 and 2:
an internal circulation bilateral symmetry structure is adopted, and the structure comprises a fan, an impeller, a volute, an air guide cover, a lifting frame, an inner sealing plate, a side sealing plate, an air guide plate and a heat exchanger;
the impeller is a centrifugal impeller, is connected with an output shaft of the fan and is arranged in the volute, and the volute is provided with a central inlet and an upper outlet and a lower outlet;
the wind scooper is arranged at the front end of the central inlet of the impeller and used for guiding the gas in the lifting frame into the impeller;
the heat exchanger is a tube-fin heat exchanger, and a partition plate is arranged in the middle of the heat exchanger and used for guiding airflow;
the lifting frame, the inner sealing plate, the side sealing plates and the inner wall of the furnace shell form a closed space, and a gas inlet and a gas outlet which are connected with the heat exchanger are respectively arranged at the upper part and the lower part of the closed space;
the lifting frame is arranged between the wind scooper and the inner sealing plate and used for guiding gas flowing through the heat exchanger into the wind scooper, and the lifting frame is driven by the cylinder to realize wind direction switching through lifting;
the air deflector is connected with the heat exchanger and used for guiding the gas flowing out of the air outlet of the volute into the heat exchanger, and the gas is blown to the workpiece along the internal partition plate of the heat exchanger.
The lifting frame is of a cavity structure, and is driven by a cylinder to lift to realize wind direction switching:
when the cylinder extends to enable the lifting frame to be located at the lower position, the lower portion of the lifting frame is an air inlet;
when the cylinder contracts to enable the lifting frame to be located at the upper position, the upper portion of the lifting frame is an air inlet.
The lifting frame is switched according to preset time or temperature difference measured by thermocouples at vertically symmetrical positions, so that the workpiece is alternately sprayed and cooled by cooling air flow.
The heat exchanger has the heat exchange function and the airflow guiding function, and finned tube connecting plates at two ends of the heat exchanger are arc-shaped and form a closed space with the inner wall of a furnace shell; the middle of the baffle is provided with a baffle plate for guiding airflow and shunting and converging.
The air cooling system for the horizontal vacuum high-pressure gas quenching furnace with the vertically-alternated airflow adopts an internal circulation bilateral symmetry structure with high space utilization rate, has a compact structure and high space utilization rate, and realizes the vertically-alternated air-jet cooling of the workpiece by the cooling airflow by driving the lifting frame to lift through the air cylinder, thereby being beneficial to improving the cooling uniformity in the gas quenching process, further improving the uniformity of the organization and performance of the workpiece and reducing the deformation of the workpiece.
The specific embodiment is as follows:
as shown in fig. 3 and 4, when the cylinder is extended to position the lifting frame 5 at the lower position, the lower portion of the lifting frame 5 is an air inlet, and the upper portion of the lifting frame 5 is an air outlet. In the cooling process, the fans 1 on the left side and the right side rotate simultaneously to drive the impellers 2 to rotate at a high speed, cooling gas flows out from an outlet at the upper part of the volute 3 after being compressed by the impellers 2, is guided by the air guide plate 8 to enter the upper heat exchanger 9 through the upper part of the lifting frame 5, is guided by the internal partition plate and then is blown to a workpiece from top to bottom to perform heat exchange, then the gas is divided to enter the lower heat exchanger 9, enters the lower parts of the lifting frames 5 on the left side and the right side after being guided by the internal partition plate, and enters the inlets of the impellers 2 through the air guide cover 4 to form a loop cooled from top to bottom.
As shown in fig. 5 and 6, when the cylinder is contracted to position the lifting frame 5 at the upper position, the upper portion of the lifting frame 5 is an air inlet, and the lower portion of the lifting frame 5 is an air outlet. In the cooling process, the fans 1 on the left side and the right side rotate simultaneously to drive the impellers 2 to rotate at a high speed, cooling gas flows out from an outlet at the lower part of the volute 3 after being compressed by the impellers 2, is guided by the air guide plate 8 to enter the lower heat exchanger 9 through the lower part of the lifting frame 5, is guided by the internal partition plate and then is blown to a workpiece in a converging manner from bottom to top for heat exchange, then the gas is divided to enter the upper heat exchanger 9, enters the upper parts of the lifting frames 5 on the left side and the right side after being guided by the internal partition plate, and enters the inlets of the impellers 2 through the air guide cover 4 to form a loop for cooling from bottom to top.
In the cooling process, the lifting frame 5 is driven to lift by the cylinder, so that the workpiece can be cooled by alternately spraying air from top to bottom and from bottom to top by cooling air flow. The lifting frame 5 is switched according to the preset time or according to the temperature difference measured by the thermocouples at the upper and lower symmetrical positions, and the workpiece is ensured to be uniformly cooled in the whole high-pressure gas quenching process through the cyclic reciprocation of the process.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. An air cooling system for a horizontal vacuum high-pressure gas quenching furnace with vertically alternated air flow is characterized in that an internal circulation bilateral symmetry structure is adopted, and the air cooling system comprises a fan (1), an impeller (2), a volute (3), an air guide cover (4), a lifting frame (5), an inner sealing plate (6), a side sealing plate (7), an air guide plate (8) and a heat exchanger (9);
the impeller (2) is a centrifugal impeller, is connected with an output shaft of the fan (1), is arranged in the volute (3), and the volute (3) is provided with a central inlet and an upper outlet and a lower outlet;
the air guide cover (4) is arranged at the front end of a central inlet of the impeller (2) and is used for guiding the gas in the lifting frame (5) into the impeller (2);
the heat exchanger (9) is a tube-fin heat exchanger, and a partition plate is arranged in the middle of the heat exchanger and used for guiding airflow;
the lifting frame (5), the inner sealing plate (6), the side sealing plate (7) and the inner wall of the furnace shell form a closed space, and a gas inlet and a gas outlet which are connected with the heat exchanger (9) are respectively arranged at the upper part and the lower part of the closed space;
the lifting frame (5) is arranged between the air guide cover (4) and the inner sealing plate (6) and used for guiding air flowing through the heat exchanger (9) into the air guide cover (4), and the lifting frame (5) is driven by a cylinder to realize wind direction switching through lifting;
the air deflector (8) is connected with the heat exchanger (9) and is used for guiding gas flowing out of the air outlet of the volute (3) into the heat exchanger (9), and the gas is blown to a workpiece along an internal partition plate of the heat exchanger (9);
carry and draw frame (5) to be cavity structures, realize the wind direction by cylinder drive lift and drop and switch:
when the cylinder extends to enable the lifting frame (5) to be located at the lower position, the lower part of the lifting frame (5) is an air inlet;
when the cylinder contracts to enable the lifting frame (5) to be located at the upper position, the upper part of the lifting frame (5) is an air inlet;
the lifting frame (5) is switched according to preset time or temperature difference measured by thermocouples at vertically symmetrical positions, so that the workpiece is cooled by the cooling airflow through up-down alternate air spraying;
the heat exchanger (9) has the heat exchange function and the airflow guiding function, and finned tube connecting plates at two ends of the heat exchanger are arc-shaped and form a closed space with the inner wall of a furnace shell; the middle of the baffle is provided with a baffle plate for guiding airflow and shunting and converging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010242806.7A CN111286589B (en) | 2020-03-31 | 2020-03-31 | Air cooling system for horizontal vacuum high-pressure gas quenching furnace with air flow capable of being alternated up and down |
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| CN202010242806.7A CN111286589B (en) | 2020-03-31 | 2020-03-31 | Air cooling system for horizontal vacuum high-pressure gas quenching furnace with air flow capable of being alternated up and down |
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| CN111286589B true CN111286589B (en) | 2021-09-21 |
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| CN113444868A (en) * | 2021-05-12 | 2021-09-28 | 滁州华海中谊工业炉有限公司 | Double-chamber oil quenching air cooling vacuum furnace |
| CN114990312A (en) * | 2022-07-29 | 2022-09-02 | 兴化市聚鑫不锈钢有限公司 | Vacuum gas quenching furnace for heat treatment of anticorrosive and antirust alloy |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045204A1 (en) * | 2003-10-15 | 2005-05-19 | Ultirec | Method and arrangement for recovering energy and chemicals |
| CN102304609A (en) * | 2011-08-31 | 2012-01-04 | 太仓市华瑞真空炉业有限公司 | Cooling device for high-pressure gas-quenching vacuum furnace |
| KR20130117461A (en) * | 2012-04-18 | 2013-10-28 | 주식회사 포스코 | Apparatus and method for controling negative pressure in cokes dry quenching facilities |
| CN106048162A (en) * | 2016-07-28 | 2016-10-26 | 上海先越冶金技术股份有限公司 | Cold-chamber high-pressure gas quenching structure |
| CN207713779U (en) * | 2017-12-26 | 2018-08-10 | 北京机电研究所有限公司 | A kind of thin-wall tube-shaped long part high-precision tempering hot air circulation stirring system of super-large diameter |
| CN207738818U (en) * | 2017-12-19 | 2018-08-17 | 上海先越冶金技术股份有限公司 | A kind of high-pressure gas quenching furnace with diversity runner |
| CN208308910U (en) * | 2018-06-14 | 2019-01-01 | 北京机电研究所有限公司 | A kind of vacuum drying oven air cooling system suitable for 20bar high pressure gas quenching |
| CN208933423U (en) * | 2018-07-31 | 2019-06-04 | 泉州佶鑫机械有限公司 | A kind of horizontal vacuum high-pressure gas quenching furnace |
| CN209260148U (en) * | 2018-12-21 | 2019-08-16 | 北京中孚悦达真空科技有限公司 | A kind of air cooling system of vacuum air-quenching furnace |
| CN210030802U (en) * | 2019-04-09 | 2020-02-07 | 上海先越冶金技术股份有限公司 | Quick gas quenching device of double-chamber gas quenching furnace |
-
2020
- 2020-03-31 CN CN202010242806.7A patent/CN111286589B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045204A1 (en) * | 2003-10-15 | 2005-05-19 | Ultirec | Method and arrangement for recovering energy and chemicals |
| CN102304609A (en) * | 2011-08-31 | 2012-01-04 | 太仓市华瑞真空炉业有限公司 | Cooling device for high-pressure gas-quenching vacuum furnace |
| KR20130117461A (en) * | 2012-04-18 | 2013-10-28 | 주식회사 포스코 | Apparatus and method for controling negative pressure in cokes dry quenching facilities |
| CN106048162A (en) * | 2016-07-28 | 2016-10-26 | 上海先越冶金技术股份有限公司 | Cold-chamber high-pressure gas quenching structure |
| CN207738818U (en) * | 2017-12-19 | 2018-08-17 | 上海先越冶金技术股份有限公司 | A kind of high-pressure gas quenching furnace with diversity runner |
| CN207713779U (en) * | 2017-12-26 | 2018-08-10 | 北京机电研究所有限公司 | A kind of thin-wall tube-shaped long part high-precision tempering hot air circulation stirring system of super-large diameter |
| CN208308910U (en) * | 2018-06-14 | 2019-01-01 | 北京机电研究所有限公司 | A kind of vacuum drying oven air cooling system suitable for 20bar high pressure gas quenching |
| CN208933423U (en) * | 2018-07-31 | 2019-06-04 | 泉州佶鑫机械有限公司 | A kind of horizontal vacuum high-pressure gas quenching furnace |
| CN209260148U (en) * | 2018-12-21 | 2019-08-16 | 北京中孚悦达真空科技有限公司 | A kind of air cooling system of vacuum air-quenching furnace |
| CN210030802U (en) * | 2019-04-09 | 2020-02-07 | 上海先越冶金技术股份有限公司 | Quick gas quenching device of double-chamber gas quenching furnace |
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Address after: 100083 No. 18 clear road, Haidian District, Beijing Patentee after: China National Machinery Institute Group Beijing Electromechanical Research Institute Co.,Ltd. Address before: 100083 No. 18 clear road, Haidian District, Beijing Patentee before: BEIJING Research Institute OF MECHANICAL & ELECTRICAL TECHNOLOGY |
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