CN106323000A - Metal melting and cooling integrated system based on cryogenic liquid - Google Patents

Metal melting and cooling integrated system based on cryogenic liquid Download PDF

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Publication number
CN106323000A
CN106323000A CN201610972984.9A CN201610972984A CN106323000A CN 106323000 A CN106323000 A CN 106323000A CN 201610972984 A CN201610972984 A CN 201610972984A CN 106323000 A CN106323000 A CN 106323000A
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China
Prior art keywords
valve
cryogenic
vacuum
swivel joint
metal melting
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Granted
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CN201610972984.9A
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Chinese (zh)
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CN106323000B (en
Inventor
张志强
王震宏
鲜晓斌
陈杰
王晶
杨钊
陆喜
付军
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Institute of Materials of CAEP
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Institute of Materials of CAEP
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Priority to CN201610972984.9A priority Critical patent/CN106323000B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00Furnaces of a kind not covered by any preceding group
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02Cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/02Observation or illuminating devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06Forming or maintaining special atmospheres or vacuum within heating chambers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/066Vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27MINDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00Type of treatment of the charge
    • F27M2003/13Smelting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a metal melting and cooling integrated system based on cryogenic liquid, which comprises a pressurization system, a pressure vessel, a vacuum valve box, a low temperature flow meter, a liquid entry system, a PID controller and a vacuum furnace. The vacuum furnace comprises a furnace body, a melting system, a partition valve, a gas outlet passage, a lifting mechanism, a condensing ring and a vacuum pump system; the partition valve is arranged in the furnace body, through which the furnace body is divided into an upper chamber and a lower chamber; the melting system is arranged in the upper chamber; the lifting mechanism is connected with the melting system; the condensing ring is arranged in the lower chamber, the liquid entry system and the condensing ring are connected; the gas outlet passage is connected with the furnace body; the vacuum pump system is connected with the furnace body. The metal melting and cooling integrated system has the advantages of reasonable design and convenient operation, which greatly enhances the injection flow rate of the cryogenic liquid, can accurately control the arbitrary flow rate, and integrates the melting and cooling into on the basis of the processing technology, reduces the process step and improves equipment processing capacity.

Description

Metal Melting based on cryogenic liquid and cooling integrated system
Technical field
The present invention relates to a kind of Metal Melting based on cryogenic liquid and cooling integrated system.
Background technology
At present, common vacuum furnace body is mainly used in the techniques such as industrial heat treatment, post processing.But, existing very Empty furnace binding, either stove two Room, three Room, internal physical environment is the most unanimous on the whole, it is impossible to meet raw material (such as simultaneously Metal) high melt and the requirement of sub-cooled, thus related process to process step relatively complicated, inefficiency.
Summary of the invention
The invention provides a kind of Metal Melting based on cryogenic liquid and cooling integrated system, the most whole body of heater meets Vacuum requirement, and the purpose of raw material high melt and sub-cooled can be realized simultaneously.
For achieving the above object, the technical solution used in the present invention is as follows:
Metal Melting based on cryogenic liquid and cooling integrated system, including the pressure charging system as pressure source, with this increasing Pressure system connects, for the pressure vessel of storing cryogenic fluids, the vacuum clack box being connected with this pressure vessel, with this vacuum clack box The cryogenic flow meter connected, the liquid being connected with this cryogenic flow meter by vacuum telescopic pipes enters system, with vacuum clack box The PID controller connected, and vacuum drying oven;Described vacuum drying oven include body of heater, smelting system, dividing plate valve, Gas outlet channels, Elevating mechanism, condensation coil and vacuum pump system;Described dividing plate valve be arranged in body of heater and body of heater be divided into upper room and under Room;Described smelter system is arranged on indoor, for metal is carried out melting;Described elevating mechanism is connected with smelter system, uses After Metal Melting, smelting system is pulled down in lower room;Described condensation coil is arranged on lower indoor, described liquid enter system with Condensation coil connects, and is used for being passed through cryogenic liquid and sprays to condensation coil, cools down the metal after melting;Described gas outlet leads to Road is connected with body of heater, for being discharged by the gas that cryogenic liquid gasification is formed;Described vacuum pump system is connected with body of heater, for right Furnace interior evacuation.
Specifically, described pressure charging system includes Dewar flask, and by pipeline simultaneously with this Dewar flask and pressure vessel The carburator connected.
Specifically, described vacuum valve case includes casing, the main road pipe being simultaneously connected with pressure vessel and cryogenic flow meter Road, the bypass line being connected with this main road pipeline, the being arranged on main road pipeline and being arranged in order toward cryogenic flow meter direction One stop valve, the first emptying protection device, the first Pressure gauge, pneumatic diaphragm control valve, the second emptying protection device and first are tight Anxious stop valve, and the second stop valve and the pressure that are arranged in bypass line and are arranged in order toward cryogenic flow meter direction adjusts Joint valve;Described pressure regulated valve and pneumatic diaphragm control valve are parallel relationship, and described PID controller is adjusted with air bladder simultaneously Joint valve and the first quick action emergency valve connect.
Further, described first emptying protection device and the second emptying protection device are connected with main road pipeline by one First relief valve and stop valve composition.
Yet further, it is additionally provided with on described main road pipeline and between the first quick action emergency valve and cryogenic flow meter For the 6th stop valve preventing liquid from refluxing.
Specifically, in described vacuum telescopic pipes includes that enter system is connected simultaneously with cryogenic flow meter and liquid Pipe, the public sleeve pipe neck tube being enclosed within outside inner tube by public affairs set tube transitions coupling, it is socketed in the public affairs between inner tube and public sleeve pipe neck tube Set tube transitions nipple, is enclosed within the mother set neck pipe outside public sleeve pipe neck tube by mother set tube transitions coupling, be socketed in inner tube with Mother set tube transitions nipple between mother set neck pipe, is arranged on the male and female between public set tube transitions nipple and mother set neck pipe Bobbin seal circle, and it is enclosed within outside inner tube and to be positioned at the rotation of the tube transitions coupling of public set and mother set tube transitions coupling close Sealing mechanism.
Further, described rotary sealing mechanism includes being enclosed within outside inner tube and contacts with public affairs set tube transitions coupling Swivel joint fix end flanges, be enclosed within the swivel joint movable end contacted outside inner tube and with mother set tube transitions coupling Cylinder, is enclosed within outside swivel joint movable end inner core and fixes the swivel joint movable end urceolus that end flanges is connected with swivel joint, It is enclosed within outside inner tube and fixes the primary seal circle between end flanges and swivel joint movable end inner core at swivel joint, and It is arranged on the secondary seal ring between swivel joint movable end urceolus and swivel joint movable end inner core.
Further, between described swivel joint movable end urceolus and swivel joint movable end inner core, it is additionally provided with steel ball, This steel ball is locked by a holding screw.
Specifically, described liquid entrance system includes that one end is connected with inner tube, the other end stretches into furnace interior and condensation The input duct that circle connects, and be arranged in input duct and be arranged in order toward vacuum drying oven direction the second Pressure gauge, second Relief valve, temperature sensor, the 7th stop valve and the 3rd Pressure gauge.
For convenience of observing stove in-vivo metal melting situation, described upper indoor are additionally provided with for monitoring the red of Metal Melting situation Outer photographic head.
Compared with prior art, the method have the advantages that
(1) present invention is by improving the structure of vacuum drying oven, utilizes smelting system, dividing plate valve, Gas outlet channels, lifting The setting of mechanism, condensation coil and vacuum pump system, and combine pressure charging system, pressure vessel, vacuum clack box, cryogenic flow meter, PID Controller and liquid enter the design of system, melting are merged with cooling, decrease technological operation step, thus realize The integral type of raw material is processed under the high and low temperature extreme by vacuum drying oven.The present invention is ensureing under furnace interior vacuum state, Can not only meet the requirement of high melt (temperature can reach 1200 DEG C), also can meet simultaneously sub-cooled (temperature can reach- 200 DEG C) requirement.
(2) in actual industrial production, traditional flow container or storage tank because of the reasons such as self structure do not reach cryogenic liquid (as Liquid nitrogen or liquid argon) purpose that is rapidly injected, simultaneously it cannot be guaranteed that accurate control to flow under high flow rate.And the present invention passes through Pressure charging system, pressure vessel, vacuum clack box, cryogenic flow meter, PID controller and liquid enter the design of system, utilize each Linkage between part, it is possible to achieve cryogenic liquid is with the injection flow velocity of 120L/min, and can carry out any flow accurately Control, thus not only injection rate is fast, and control accuracy is high.
(3) the vacuum telescopic pipes structure of present invention design, changes traditional fixing pipeline pattern, by circuit design is Telescopic mode, thus both can guarantee that vacuum internal in pipeline telescopic process, the flow velocity of reality can be met again and do not send out Raw leakage.
(4) present invention is also provided with infrared camera, can monitor the melting situation of smelting system in real time, convenient behaviour Correlation circumstance is understood as personnel.
(5) present configuration is reasonable, easy to use, safe, system reliability strong, has the highest practical value And promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of vacuum telescopic pipes.
Fig. 3 is the structural representation of vacuum drying oven.
Wherein, corresponding entitled of reference:
1-Dewar flask, 2-carburator, 3-pressure vessel, 4-casing, 5-the first stop valve, 6-the second stop valve, 7-first Relief valve, 8-stop valve, 9-the first Pressure gauge, 10-pneumatic diaphragm control valve, 11-pressure-regulating valve, 12-the first emergency cut-off Valve, 13-the 6th stop valve, 14-cryogenic flow meter, 15-vacuum telescopic pipes, 1501-inner tube, 1502-outer tube, 1503-public affairs set Tube transitions coupling, 1504-swivel joint fixes end flanges, 1505-clamping screw, 1506-primary seal circle, the sealing of 1507-pair Circle, 1508-holding screw, 1509-steel ball, 1510-swivel joint movable end inner core, 1511-swivel joint movable end urceolus, 1512-mother set tube transitions coupling, 1513-public affairs sleeve pipe neck tube, 1514-mother set neck pipe, 1515-public affairs set tube transitions nipple, 1516-male-female sleeve seal of tube circle, 1517-mother set tube transitions nipple, 16-the second Pressure gauge, 17-the second relief valve, 18-temperature Sensor, 19-the 7th stop valve, 20-the 3rd Pressure gauge, 21-vacuum drying oven, 2101-infrared camera, 2102-smelting system, 2103-dividing plate valve, 2104-Gas outlet channels, 2105-elevating mechanism, 2106-condensation coil, 2107-vacuum pump system, Room under 2108-, the upper room of 2109-.
Detailed description of the invention
The invention will be further described with embodiment in explanation below in conjunction with the accompanying drawings, and the mode of the present invention includes but not only limits In following example.
As shown in Figures 1 to 3, the invention provides a kind of Metal Melting and cooling integrated system, it includes pressure charging system, pressure Force container 3, vacuum clack box, cryogenic flow meter 14, vacuum telescopic pipes 15, PID controller, liquid enter system and vacuum drying oven 21。
Described pressure charging system is as the pressure source of whole system, and it includes Dewar flask 1, and by pipeline simultaneously with this Du The carburator 2 that watt bottle 1 and pressure vessel 3 connect.Described pressure vessel 3 is for storing cryogenic fluids.
Described vacuum clack box is one of major operating system of the present invention, and it includes casing 4, simultaneously with pressure vessel 3 and The main road pipeline that cryogenic flow meter 14 connects, the bypass line being connected with this main road pipeline, it is arranged on main road pipeline and toward low The first stop valve 5, first that temperature effusion meter 14 direction is arranged in order empties protection device, the first Pressure gauge 9, air bladder regulation Valve 10, second empties protection device, the first quick action emergency valve 12 and is used for the 6th stop valve 13, Yi Jishe preventing liquid from refluxing Put the second stop valve 6 and pressure-regulating valve 11 being arranged in order in bypass line and toward cryogenic flow meter 14 direction.In vacuum In clack box, described pressure-regulating valve 11 and pneumatic diaphragm control valve 10 are in parallel relationship, and described PID controller is simultaneously with pneumatic Diaphragm valve 10 and the first quick action emergency valve 12 connect.
Saying further, described first emptying protection device and second empties the protection device row as front and back two segment pipe Empty protection device, both of which is made up of first relief valve 7 being connected with main road pipeline and a stop valve 8.
Described cryogenic flow meter 14 is for adding up the instantaneous value of flow rate of liquid, total value in pipeline.And such as Fig. 2 institute Show, described vacuum telescopic pipes 15 include inner tube 1501, outer tube 1502, the tube transitions coupling 1503 of public set, rotary sealing mechanism, Mother set tube transitions coupling 1512, public sleeve pipe neck tube 1513, mother set neck pipe 1514, public set tube transitions nipple 1515, male and female Bobbin seal circle 1516 and mother set tube transitions nipple 1517.
It is outside that described public sleeve pipe neck tube 1513 is enclosed within inner tube 1501 by public affairs set tube transitions coupling 1503, and described public affairs Sleeve pipe 1515 is then socketed between inner tube 1501 and public sleeve pipe neck tube 1513.Described mother set neck pipe 1514 is by mother set tube transitions Coupling 1512 is enclosed within outside public sleeve pipe neck tube 1513, and mother set tube transitions nipple 1517 is then socketed in inner tube 1501 and mother set pipe Between neck tube 1514.Described male-female sleeve seal of tube circle 1516 is arranged on public set tube transitions nipple 1515 and mother set neck pipe Between 1513.
Described rotary sealing mechanism includes being enclosed within inner tube 1501 rotation that is outside and that contact with public affairs set tube transitions coupling 1503 Adaptor fixes end flanges 1504, is enclosed within the swivel joint that inner tube 1501 is outside and contacts with mother set tube transitions coupling 1512 Movable end inner core 1510, is enclosed within swivel joint movable end inner core 1510 outside and solid with swivel joint by clamping screw 1505 The swivel joint movable end urceolus 1511 that fixed end flange 1504 connects, is enclosed within outside inner tube 1501 and is positioned at swivel joint and fix Primary seal circle 1506 between end flanges 1504 and swivel joint movable end inner core 1510, and it is arranged on swivel joint movable end Secondary seal ring 1507 between urceolus 1511 and swivel joint movable end inner core 1510.It addition, outside described swivel joint movable end Being additionally provided with steel ball 1509 between cylinder 1511 and swivel joint movable end inner core 1510, this steel ball 1509 is locked by a holding screw 1508 Tightly.
Described liquid enters the input duct that system then includes being connected with inner tube 1501, and is arranged on input duct Second Pressure gauge the 16, second relief valve 17 that is upper and that be arranged in order toward vacuum drying oven direction, temperature sensor the 18, the 7th stop valve 19 and the 3rd Pressure gauge 20.
Described vacuum drying oven 21 is another main innovation point of the present invention, as it is shown on figure 3, this vacuum drying oven 21 include body of heater, Infrared camera 2101, smelting system 2102, dividing plate valve 2103, Gas outlet channels 2104, elevating mechanism 2105, condensation coil 2106 and vacuum pump system 2107;Described dividing plate valve 2103 be arranged in body of heater and body of heater be divided into upper room 2109 and under Room 2108.
Described smelting system 2102 is arranged in room 2109, for metal is carried out melting.Described elevating mechanism 2105 It is connected with smelting system 2102, after Metal Melting, smelting system is pulled down in lower room, and described infrared camera 2101 It is arranged in room 2109, is used for monitoring Metal Melting situation.Described condensation coil 2106 is arranged in lower room 2108, described feed liquor Pipeline is passed through furnace interior and is connected with condensation coil 2106, is used for being passed through cryogenic liquid and sprays to condensation coil, to the gold after melting Belong to and cooling down.Described Gas outlet channels 2104 is connected with body of heater, for being discharged by the gas that cryogenic liquid gasification is formed.Institute State vacuum pump system 2107 to be connected with body of heater, for furnace interior evacuation.
Additionally, described bottom of furnace body is additionally provided with leg, for whole body of heater is supported.
The work process of the present invention is as follows:
Time initial, first system carried out coarse adjustment examination, uses manual mode during system coarse examination, close the second stop valve 6, gas Dynamic diaphragm valve 10, and open first stop valve the 5, first quick action emergency valve the 12, the 7th stop valve 19, the most manual in order The open degree of regulation pressure-regulating valve 11, monitors pressure the 3rd Pressure gauge 20, and records the service data of cryogenic flow meter 14.
Then, before each startup system, the data of temperature sensor 18 are read, it is determined whether in set point, if not having Have, then pipeline is carried out pre-cooling cooling, so that its temperature value reaches setting value.
The first stop valve 5, pneumatic diaphragm control valve the 10, first quick action emergency valve 12 should be opened during pre-cooling in order, close Closing the 7th stop valve 19, then utilize cryogenic flow meter 14 to add up the medium passed through in precooling process, pre-cooling completes After utilize PID controller control the automatic standard-sized sheet of pneumatic diaphragm control valve 10.
Start and input the flow of needs before injecting flow process and by the time, open the 7th stop valve 19 during startup and start fall Temperature, in temperature-fall period, the liquid flow through can be sampled by cryogenic flow meter 14, adjusts pneumatic thin now by PID controller The open degree of diaphragm control valve 10 valve, can realize pneumatic diaphragm control valve 10 and the closed loop control of cryogenic flow meter 14.
In above-mentioned temperature-fall period, the operation principle of vacuum telescopic pipes 15 is as follows:
Inner tube 1501 is passed through cryogenic liquid (preferably liquid nitrogen or liquid argon), now, biphase owing to there is air-liquid, gas Can rise, but under the common effect of primary seal circle 1506 and secondary seal ring 1507, the gas of rising cannot be discharged, thus can be Form sealing gland at male-female sleeve seal of tube circle 1516, cause liquid will not leak into male and female set by male-female sleeve seal of tube circle 1516 Between the interlayer of neck pipe.The length of male and female sleeve pipe neck tube can make the heat transfer of cryogenic liquid will not occur at swivel joint Frosting and the formation globule.
Consequently, it is possible to after liquid is by terminating, under external force so that swivel joint is fixed end flanges 1504, rotated Rotate between joint movable end urceolus 1511 and swivel joint movable end inner core 10, thus complete rotary course.This enforcement In example, primary seal circle 1506 uses politef to make, and inner ring adds rustless steel tension spring card, it is achieved that in low temperature environment Dynamic static sealing.
After the cooling realizing cryogenic liquid, the smelting system 2102 of upper room 2109 in adding the raw material into vacuum furnace body 21 In, it is then shut off Gas outlet channels 2104 and input duct (being equipped with valve on Gas outlet channels and input duct), and Control dividing plate valve 2103 to be closed.
Then, by vacuum pump system 2107, furnace interior carried out evacuation, and then melting.Divide in whole smelting system It is furnished with various kinds of sensors and attemperator, it is ensured that after Metal Melting, be at temperature constant state.
Then, open dividing plate valve 2103, and smelting system 2102 be pulled down in lower room 8 by elevating mechanism 2105, It is then shut off dividing plate valve 2103.Opening the valve of Gas outlet channels 2104 and input duct, cryogenic liquid is from feed pathway Entering, and be ejected into smelting system 2102 cooled down metal by condensation coil 2106, cryogenic liquid endothermic gasification is produced A large amount of gases discharge from Gas outlet channels 2104, melting completes.
In above-mentioned cooling procedure, if occurring in vacuum drying oven 21 that pressure exceedes the situation setting pressure, then PID controller meeting Controlling the first quick action emergency valve 5 to close, when pressure drops to set below pressure, the first quick action emergency valve 5 automatically opens up continuation fall Temperature, until completing to set flow.Pneumatic diaphragm control valve the 10, the 7th stop valve 19 is closed after having lowered the temperature.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit the protection model of the present invention Enclosing, all body design thought in the present invention and the change having no essential meaning made mentally or polishing, it is solved Technical problem is the most consistent with the present invention, within all should being included in protection scope of the present invention.

Claims (10)

1. Metal Melting based on cryogenic liquid and cooling integrated system, it is characterised in that include the supercharging system as pressure source System, is connected with this pressure charging system, for the pressure vessel (3) of storing cryogenic fluids, the vacuum valve being connected with this pressure vessel (3) Case, the cryogenic flow meter (14) being connected with this vacuum clack box, by vacuum telescopic pipes (15) with this cryogenic flow meter (14) even The liquid connect enters system, the PID controller being connected with vacuum clack box, and vacuum drying oven (21);Described vacuum drying oven (21) includes Body of heater, smelting system (2102), dividing plate valve (2103), Gas outlet channels (2104), elevating mechanism (2105), condensation coil And vacuum pump system (2107) (2106);Described dividing plate valve (2103) is arranged in body of heater and body of heater is divided into upper room And lower room (2108) (2109);Described smelter system (2102) is arranged in room (2109), for metal is carried out melting;Institute State elevating mechanism (2105) to be connected with smelter system (2102), pulled down in lower room by smelting system after Metal Melting;Institute Stating condensation coil (2106) to be arranged in lower room (2108), described liquid enters system and is connected with condensation coil (2106), is used for being passed through Cryogenic liquid sprays to condensation coil, cools down the metal after melting;Described Gas outlet channels (2104) is connected with body of heater, For the gas that cryogenic liquid gasification is formed is discharged;Described vacuum pump system (2107) is connected with body of heater, in body of heater Portion's evacuation.
Metal Melting based on cryogenic liquid the most according to claim 1 and cooling integrated system, it is characterised in that described Pressure charging system includes Dewar flask (1), and the carburator being simultaneously connected by pipeline with this Dewar flask (1) and pressure vessel (3) (2)。
Metal Melting based on cryogenic liquid the most according to claim 2 and cooling integrated system, it is characterised in that described Vacuum valve case includes casing (4), and the main road pipeline being simultaneously connected with pressure vessel (3) and cryogenic flow meter (14), with this main road The bypass line that pipeline connects, the first cut-off being arranged on main road pipeline and being arranged in order toward cryogenic flow meter (14) direction Valve (5), the first emptying protection device, the first Pressure gauge (9), pneumatic diaphragm control valve (10), the second emptying protection device and the One quick action emergency valve (12), and second section being arranged in bypass line and being arranged in order toward cryogenic flow meter (14) direction Only valve (6) and pressure-regulating valve (11);Described pressure regulated valve (11) and pneumatic diaphragm control valve (10) are in parallel relationship, and institute State PID controller to be connected with pneumatic diaphragm control valve (10) and the first quick action emergency valve (12) simultaneously.
Metal Melting based on cryogenic liquid the most according to claim 3 and cooling integrated system, it is characterised in that described First emptying protection device and the second emptying protection device are by first relief valve (7) being connected with main road pipeline and a cut-off Valve (8) forms.
Metal Melting based on cryogenic liquid the most according to claim 3 and cooling integrated system, it is characterised in that described On main road pipeline and be positioned between the first quick action emergency valve (12) and cryogenic flow meter (14) and be additionally provided with for preventing liquid from refluxing The 6th stop valve (13).
6. according to the Metal Melting based on cryogenic liquid described in any one of claim 2~5 and cooling integrated system, its feature Being, described vacuum telescopic pipes (15) includes entering, with cryogenic flow meter (14) and liquid, the inner tube that system is connected simultaneously (1501), it is enclosed within inner tube (1501) public sleeve pipe neck tube (1513) outward by public affairs set tube transitions coupling (1503), in being socketed in Public set tube transitions nipple (1515) between pipe (1501) and public sleeve pipe neck tube (1513), by mother set tube transitions coupling (1512) it is enclosed within public sleeve pipe neck tube (1513) mother set neck pipe (1514) outward, is socketed in inner tube (1501) and mother set neck pipe (1514) mother set tube transitions nipple (1517) between, is arranged on public set tube transitions nipple (1515) and mother set neck pipe (1513) male-female sleeve seal of tube circle (1516) between, and it is enclosed within that inner tube (1501) is outside and to be positioned at public set tube transitions external Head and the rotary sealing mechanism of mother set tube transitions coupling.
Metal Melting based on cryogenic liquid the most according to claim 6 and cooling integrated system, it is characterised in that described It is solid that rotary sealing mechanism includes being enclosed within inner tube (1501) swivel joint that is outside and that contact with public affairs set tube transitions coupling (1503) Fixed end flange (1504), is enclosed within inner tube (1501) swivel joint that is outside and that contact with mother set tube transitions coupling (1512) and lives Moved end inner core (1510), is enclosed within swivel joint movable end inner core (1510) outside and fixes end flanges (1504) with swivel joint Swivel joint movable end urceolus (1511) connected, is enclosed within outside inner tube (1501) and is positioned at swivel joint and fix end flanges (1504) the primary seal circle (1506) and between swivel joint movable end inner core (1510), and it is arranged on swivel joint movable end Secondary seal ring (1507) between urceolus (1511) and swivel joint movable end inner core (1510).
Metal Melting based on cryogenic liquid the most according to claim 7 and cooling integrated system, it is characterised in that described Steel ball (1509), this steel ball it is additionally provided with between swivel joint movable end urceolus (1511) and swivel joint movable end inner core (1510) (1509) locked by a holding screw (1508).
9. according to the Metal Melting based on cryogenic liquid described in claim 7 or 8 and cooling integrated system, it is characterised in that Described liquid enters system and includes that one end is connected with inner tube (1501), the other end stretches into furnace interior and is connected with condensation coil (2106) Input duct, and be arranged in input duct and be arranged in order toward vacuum drying oven direction the second Pressure gauge (16), the second peace Full valve (17), temperature sensor (18), the 7th stop valve (19) and the 3rd Pressure gauge (20).
Metal Melting based on cryogenic liquid the most according to claim 1 and cooling integrated system, it is characterised in that institute The infrared camera (2101) for monitoring Metal Melting situation it is additionally provided with in stating room (2109).
CN201610972984.9A 2016-10-28 2016-10-28 Metal Melting based on cryogenic liquid and cooling integrated system Active CN106323000B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106989802A (en) * 2017-05-22 2017-07-28 中国测试技术研究院流量研究所 A kind of device for improving the cryogenic liquid gauge check degree of accuracy

Citations (6)

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