CN110425819B - Cryogenic treatment device - Google Patents
Cryogenic treatment device Download PDFInfo
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- CN110425819B CN110425819B CN201910767664.3A CN201910767664A CN110425819B CN 110425819 B CN110425819 B CN 110425819B CN 201910767664 A CN201910767664 A CN 201910767664A CN 110425819 B CN110425819 B CN 110425819B
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- container
- cooling
- cooling gas
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
Abstract
The invention discloses a cryogenic treatment device, comprising: a heat-insulating container (1); a cooling treatment container (1-1) disposed in the heat insulating container (1) with a passage (11) for a cooling gas to flow between the cooling treatment container (1) and the heat insulating container (1), the cooling treatment container (1-1) containing a material to be treated; a storage container (2) for cooling gas communicating with said channel (11) in the thermally insulated container (1) for delivering cooling gas into said channel (11). According to the cryogenic treatment device provided by the embodiment of the invention, on one hand, the pollution of the material to be treated can be selectively avoided, on the other hand, the temperature distribution of the material to be treated in the cooling treatment container can be uniform through the flowing of nitrogen in the circulating flow channel, the additional uneven stress distribution on the material caused by the uneven temperature distribution is avoided, and the indirect uniform cooling cryogenic treatment mode ensures good treatment quality and treatment effect.
Description
Technical Field
The invention relates to the field of cryogenic treatment, in particular to a cryogenic treatment device.
Background
The cryogenic treatment technology is a new technological process which is developed in China in recent years, and the basic principle is that a cooling working medium is utilized to cool materials such as metal and the like to a certain temperature lower than the room temperature, generally ranging from-100 ℃ to-196 ℃, and the cryogenic treatment is called as the ultra-cold treatment when the temperature is lower. The cryogenic treatment process can reduce a large amount of residual austenite in the metal material, reduce intercrystalline tensile stress and eliminate internal stress, thereby improving the dimensional stability and the uniformity of the material, reducing deformation, improving the mechanical property of the material and prolonging the service life of the material.
At present, the application of the cryogenic treatment technology is distributed in various fields of aerospace, precision machining, measuring tools, automobiles, molds and the like, particularly in some high-precision application fields, and parts are required to have the characteristics of small stress, small deformation, high strength, high precision, long service life and the like, and are particularly important for the cryogenic treatment process of the parts. There are also special-purpose materials or products that require cryogenic treatment to meet their stability and safety requirements for use in low temperature environments. With the gradual and deep research on the cryogenic treatment technology, the research range is extended from the metal field to the nonmetal field, so the technology has wide application prospect.
The existing cryogenic treatment equipment generally directly soaks the material to be treated in a cooling working medium or carries out cooling treatment by adopting a mode of spraying liquid nitrogen and other cooling working mediums by a fan, and the method has the main defects that the cooling working medium directly contacts the material to be treated, so that material pollution is caused, and the use is influenced; uneven material temperature distribution caused by direct cooling can bring additional stress loading; the temperature control precision is poor; and the problems of high failure, short service life and the like easily occur to the fan under the low-temperature severe working condition.
Disclosure of Invention
Objects of the invention
The invention aims to provide a cryogenic treatment device, wherein a cooling treatment container is arranged in an insulating container, a channel for gas to flow circularly is arranged between the cooling treatment container and the insulating container, and the material to be treated in the cooling treatment container is cooled by gas.
(II) technical scheme
In a first aspect of the present invention, there is provided a cryogenic treatment apparatus comprising: an insulated container; a cooling treatment container provided in the heat insulating container with a passage for a cooling gas to flow therebetween, the cooling treatment container containing a material to be treated; a storage vessel for a cooling gas in communication with the passageway in the insulated container for delivering the cooling gas into the passageway.
Further, the heat insulating container is also provided with an outlet for flowing out the cooling gas.
Further, the heat insulation box body is also provided with an inlet of cooling gas, and the inlet is communicated with the storage container; the cooling treatment container is of a cuboid structure, and the inlet and the outlet are arranged in a diagonal line mode.
Further, still include: a heat exchanger disposed within the storage container; and one end of the heat exchanger is communicated to the outlet, and the other end of the heat exchanger is communicated to the channel and is used for cooling the cooling gas flowing out of the outlet and then conveying the cooling gas into the channel.
Further, high-purity nitrogen or high-purity helium is arranged in the cooling treatment container, and a fan is further arranged in the cooling treatment container and used for enabling the high-purity nitrogen or high-purity helium to be uniformly distributed.
Further, the device also comprises a control and detection system, a temperature sensor and a pressure sensor; a temperature sensor provided in the cooling processing container and configured to detect a temperature in the cooling processing container; a pressure sensor provided in the cooling processing container and configured to detect a pressure in the cooling processing container; and the control and detection system is used for receiving and displaying the data acquired by the temperature sensor and the pressure sensor in real time.
Further, the control and detection system is also used to control the temperature and pressure within the insulated container.
Further, the heat insulation container is of a sandwich structure, and a heat insulation layer is arranged in the sandwich layer.
Further, the cooling device further comprises a pump, wherein the pump is arranged on a pipeline of the storage container communicated with the channel and used for conveying the cooling gas into the channel.
Further, the heat insulation device also comprises a stop valve, wherein the stop valve is arranged on a pipeline for communicating the storage container and the heat insulation container and is used for adjusting the flow and the flow speed of the cooling gas conveyed into the channel.
(III) advantageous effects
The technical scheme of the invention has the following beneficial technical effects:
(1) the cryogenic treatment device provided by the embodiment of the invention is provided with the heat insulation container, the cooling treatment container is arranged in the heat insulation container, the channel for cooling gas to flow circularly is arranged between the heat insulation container and the cooling treatment container, so that the cooling gas can flow in the channel, the material to be treated in the cooling treatment container is cooled by the cooling gas, the material to be treated is not in direct contact with the cooling gas, on one hand, the pollution of the material to be treated is avoided, on the other hand, the temperature distribution of the material to be treated in the cooling treatment container is uniform by flowing nitrogen in the channel for circulating flow, the additional stress on the material is prevented from being non-uniform due to the non-uniform temperature distribution, and the indirect uniform cooling treatment mode ensures good treatment quality and treatment effect.
Drawings
FIG. 1 is a schematic structural view of a cryogenic treatment apparatus according to a first embodiment of the present invention.
Reference numerals:
1: an insulated container; 1-1: cooling the treatment vessel; 1-2: a fan; 1-3: a temperature sensor; 11: a channel; 12: an outlet; 13: a thermal insulation layer; 14: a cooling gas inlet; 2: a storage vessel for a cooling gas; 3: a heat exchanger; 4: a pump; 5: a stop valve; 6: a control and detection system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
FIG. 1 is a schematic structural view of a cryogenic treatment apparatus according to a first embodiment of the present invention.
A schematic diagram of a layer structure according to an embodiment of the invention is shown in fig. 1. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
As shown in fig. 1, the cryogenic treatment apparatus includes: a heat insulating container 1, a cooling process container 1-1, and a cooling gas storage container. Wherein the direction of the arrows represents the direction of flow of the cooling gas within the channel 11.
A cooling treatment container 1-1 disposed in the heat insulating container 1 with a passage 11 for a cooling gas to flow between the cooling treatment container 1 and the heat insulating container 1, the cooling treatment container 1-1 being used for containing a material to be treated.
A storage container 2 for cooling gas, communicating with said passage 11 in the insulated container 1, for delivering the cooling gas into said passage 11. Alternatively, the cooling gas may be nitrogen or helium, and the storage in the storage container 2 may be liquid nitrogen or liquid helium.
In one embodiment, the thermally insulated container 1 is further provided with an outlet 12 for outflow of cooling gas. So that the cooling gas can be discharged after absorbing heat of the material to be treated.
In a particular embodiment, the thermal insulation cabinet 1 is also provided with an inlet 14 for a cooling gas, through which inlet 14 the thermal insulation cabinet 1 communicates with said storage container 2.
In a preferred embodiment, the cooling treatment vessel 1-1 is a rectangular parallelepiped with the inlet 14 diagonal to the outlet 12 to make full use of the cooling gas.
In the present embodiment, the flow of the cooling gas in the passage 11 may be realized by providing the heat insulating container 1 with the cooling gas inlet 14 and the cooling gas outlet 12 to cool down the material to be processed in the cooling process container 1-1.
In a preferred embodiment, the cryogenic treatment device further comprises a heat exchanger 3. The heat exchanger may be disposed within the storage vessel 2. One end of the heat exchanger 3 is communicated to the outlet 12, and the other end is communicated to the channel 11, and the heat exchanger is used for cooling the cooling gas flowing out from the outlet 12 and then conveying the cooling gas into the channel 11, so that the circulating flow of the cooling gas is realized, and the use efficiency is improved.
In an alternative embodiment, high-purity nitrogen gas or high-purity helium gas is further provided in the cooling treatment container 1-1, and a fan 1-2 is further provided in the cooling treatment container 1-1 for uniformly distributing the high-purity nitrogen gas or the high-purity helium gas. In the present embodiment, the purity of the high purity nitrogen gas and the high purity helium gas is more than 99.99%. The application is to bring a high purity cooling gas into contact with the material to be processed. The prior art generally consists in directly immersing the material to be processed in liquid nitrogen. The existing liquid nitrogen has more impurities and easily pollutes the surface of a material to be treated. This application adopts high-purity cooling gas, compares in prior art's liquid nitrogen, and purity is high, and is comparatively clean, can avoid pending material surface pollution for the treatment effect is good.
Specifically, the cooling treatment container 1-1 is vacuumized, high-purity nitrogen or helium is filled into the cooling treatment container, and the cooling treatment container is uniformly mixed with the gas by the fan 1-2, so that the cooling effect is better.
In one embodiment, a control and detection system 6, temperature sensors 1-3 and pressure sensors are also included; a temperature sensor 1-3 provided in the cooling processing container 1-1 for detecting a temperature in the cooling processing container 1-1; a pressure sensor provided in the cooling processing container 1-1 for detecting a pressure in the cooling processing container 1-1; and the control and detection system 6 is used for receiving and displaying the data acquired by the temperature sensors 1-3 and the pressure sensors in real time.
Optionally, the control and detection system 6 is also used to control the temperature and pressure inside said insulated container 1.
In a preferred embodiment, the thermally insulated container 1 is of a sandwich construction, in which a thermally insulating layer 13 is arranged. The thermal insulation layer may be a foam material or a fiber material, etc.
In one embodiment, the cryogenic treatment device further comprises a pump 4, and the pump 4 is arranged on a pipeline of the storage container 2 communicated with the channel 11 and used for conveying the cooling gas into the channel 11.
Optionally, among the cryogenic treatment device, still include stop valve 5, stop valve 5 sets up storage container 2 with on the pipeline of heat-insulating container 1 intercommunication for adjust carry to the flow and the velocity of flow of the cooling gas in the passageway 11, and then adjust the temperature of cooling gas.
The cryogenic treatment device provided by the embodiment of the invention is provided with the heat insulation container, the cooling treatment container is arranged in the heat insulation container, the channel for cooling gas to flow circularly is arranged between the heat insulation container and the cooling treatment container, so that the cooling gas can flow in the channel, the material to be treated in the cooling treatment container is cooled by the cooling gas, the material to be treated is not in direct contact with the cooling gas, on one hand, the pollution of the material to be treated is avoided, on the other hand, the temperature of the material to be treated in the cooling treatment container is uniformly distributed by flowing nitrogen in the channel for circulating flow, the additional stress on the material is prevented from being non-uniformly distributed due to the non-uniform temperature part, and the indirect uniformly-cooled cryogenic treatment mode ensures good treatment quality and treatment effect.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (4)
1. A cryogenic treatment device, comprising:
a heat-insulating container (1);
a cooling treatment container (1-1) disposed in the heat insulating container (1) with a passage (11) for a cooling gas to flow between the cooling treatment container (1) and the heat insulating container (1), the cooling treatment container (1-1) containing a material to be treated;
a storage container (2) for cooling gas, communicating with said channel (11) inside the insulated container (1), for delivering cooling gas into said channel (11);
high-purity nitrogen or high-purity helium is arranged in the cooling treatment container (1-1), and a fan (1-2) is further arranged in the cooling treatment container (1-1) and used for enabling the high-purity nitrogen or high-purity helium to be uniformly distributed;
the heat-insulating container (1) is also provided with an outlet (12) for the outflow of cooling gas;
the insulated container (1) is also provided with an inlet (14) for cooling gas, the inlet (14) being in communication with the storage container (2);
the cooling treatment container (1-1) is of a cuboid structure, and the inlet (14) and the outlet (12) are arranged diagonally;
further comprising:
a heat exchanger (3) arranged within the storage container (2);
one end of the heat exchanger (3) is communicated to the outlet (12), and the other end of the heat exchanger is communicated to the channel (11) and is used for cooling the cooling gas flowing out of the outlet (12) and then conveying the cooling gas into the channel (11);
also comprises a pump (4),
the pump (4) is arranged on a pipeline of the storage container (2) communicated with the channel (11) and is used for conveying the cooling gas into the channel (11);
the heat insulation container is characterized by further comprising a stop valve (5), wherein the stop valve is arranged on a pipeline communicated with the storage container (2) and the heat insulation container (1) and used for adjusting the flow and the flow speed of cooling gas conveyed into the channel (11).
2. Cryogenic treatment plant according to claim 1, characterized by further comprising a control and detection system (6), temperature sensors (1-3) and pressure sensors;
the temperature sensor (1-3) is arranged in the cooling treatment container (1-1) and is used for detecting the temperature in the cooling treatment container (1-1);
the pressure sensor is arranged in the cooling treatment container (1-1) and is used for detecting the pressure in the cooling treatment container (1-1);
and the control and detection system (6) is used for receiving and displaying data acquired by the temperature sensors (1-3) and the pressure sensors in real time.
3. Cryogenic treatment plant according to claim 2, wherein the control and detection system (6) is also used to control the temperature and pressure inside the insulated container (1).
4. Cryogenic treatment device according to any of claims 1-3, wherein the heat insulated vessel (1) is of a sandwich construction, in which a heat insulating layer (13) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767664.3A CN110425819B (en) | 2019-08-20 | 2019-08-20 | Cryogenic treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767664.3A CN110425819B (en) | 2019-08-20 | 2019-08-20 | Cryogenic treatment device |
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| CN110425819A CN110425819A (en) | 2019-11-08 |
| CN110425819B true CN110425819B (en) | 2021-12-17 |
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| CN201910767664.3A Active CN110425819B (en) | 2019-08-20 | 2019-08-20 | Cryogenic treatment device |
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| CN1948516A (en) * | 2006-11-08 | 2007-04-18 | 浙江大学 | Temperature controllable deep cooling treatment system bases on natural circulation |
| CN201764768U (en) * | 2010-08-13 | 2011-03-16 | 英利能源（中国）有限公司 | Cryogenic treatment device for crystalline silicon material |
| CN103243208A (en) * | 2012-04-13 | 2013-08-14 | 中国科学院理化技术研究所 | Cryogenic treatment equipment with nitrogen recovery device |
| CN204943999U (en) * | 2015-08-28 | 2016-01-06 | 成都正广科技有限公司 | A kind of heat convection cryogenic processor |
| CN205170912U (en) * | 2015-10-23 | 2016-04-20 | 成都联翔新材料有限公司 | Be used for cryogenic equipment of product |
| CN105650959A (en) * | 2015-12-31 | 2016-06-08 | 上海振华重工集团(南通)传动机械有限公司 | Liquid nitrogen cooling device and assembly method thereof |
| CN108277334A (en) * | 2018-03-07 | 2018-07-13 | 中国科学院理化技术研究所 | A kind of deep cold treatment apparatus and method |
| CN109556337A (en) * | 2018-12-03 | 2019-04-02 | 天津市热处理研究所有限公司 | A kind of dual chamber cryogenic treatment apparatus |
-
2019
- 2019-08-20 CN CN201910767664.3A patent/CN110425819B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948516A (en) * | 2006-11-08 | 2007-04-18 | 浙江大学 | Temperature controllable deep cooling treatment system bases on natural circulation |
| CN201764768U (en) * | 2010-08-13 | 2011-03-16 | 英利能源（中国）有限公司 | Cryogenic treatment device for crystalline silicon material |
| CN103243208A (en) * | 2012-04-13 | 2013-08-14 | 中国科学院理化技术研究所 | Cryogenic treatment equipment with nitrogen recovery device |
| CN204943999U (en) * | 2015-08-28 | 2016-01-06 | 成都正广科技有限公司 | A kind of heat convection cryogenic processor |
| CN205170912U (en) * | 2015-10-23 | 2016-04-20 | 成都联翔新材料有限公司 | Be used for cryogenic equipment of product |
| CN105650959A (en) * | 2015-12-31 | 2016-06-08 | 上海振华重工集团(南通)传动机械有限公司 | Liquid nitrogen cooling device and assembly method thereof |
| CN108277334A (en) * | 2018-03-07 | 2018-07-13 | 中国科学院理化技术研究所 | A kind of deep cold treatment apparatus and method |
| CN109556337A (en) * | 2018-12-03 | 2019-04-02 | 天津市热处理研究所有限公司 | A kind of dual chamber cryogenic treatment apparatus |
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