CN213977814U - Vacuum heat treatment furnace for hydrogen storage material - Google Patents
Vacuum heat treatment furnace for hydrogen storage material Download PDFInfo
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- CN213977814U CN213977814U CN202022868095.2U CN202022868095U CN213977814U CN 213977814 U CN213977814 U CN 213977814U CN 202022868095 U CN202022868095 U CN 202022868095U CN 213977814 U CN213977814 U CN 213977814U
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Abstract
The embodiment of the utility model discloses hydrogen storage material vacuum heat treatment furnace, include stove outer covering, heating element, vacuum unit, fill gassing unit, air-cooled unit, water-cooled unit and electrical control unit, heating element sets up in the stove outer covering, including insulating layer, heater and work piece support, the insulating layer encloses in the stove outer covering and establishes into hexahedron structure, makes to form the cooling zone who is used for the cooling between insulating layer and the stove outer covering, and the inside of insulating layer forms the heating chamber, and the heater of independent control by temperature change has been put to the equipartition on six faces of heating chamber to constitute six zones of heating, the work piece supports to be fixed in the heating chamber, places for the work piece, and vacuum unit, fill gassing unit, air-cooled unit, water-cooled unit and electrical control unit all respectively with stove outer covering fixed connection. The utility model discloses be six heating zones with whole heating chamber design in the stove to accuse temperature alone, thereby the temperature homogeneity of assurance equipment is good.
Description
Technical Field
The embodiment of the utility model provides a relate to horizontal vacuum heat treatment equipment technical field, concretely relates to hydrogen storage material vacuum heat treatment furnace.
Background
With the development of industry and the improvement of people's living standard of matter, the demand of energy is increasing day by day. Since the energy used in recent decades is mainly from fossil fuels (such as coal, oil and natural gas), and its use inevitably pollutes the environment, and its reserves are limited, the search for renewable green energy is urgent. Hydrogen energy (hydrogen storage material) is attracting much attention as a green energy source and energy carrier with abundant reserves, wide sources and high energy density.
At present, in the vacuum heat treatment equipment for treating the hydrogen storage material, poor temperature uniformity (generally 1050 ℃ and the temperature uniformity can preferably reach +/-8 ℃) of the hydrogen storage material is easily caused in the heating process (heating with gas protection), namely the performance does not meet the requirement, and if the temperature uniformity of the hydrogen storage material is ensured to be good, a mode of reducing the charging amount can be adopted, so that the production efficiency and the operation cost are influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a hydrogen storage material vacuum heat treatment furnace to solve the problem that hydrogen storage material among the prior art is poor in temperature uniformity in the heating process.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
according to a first aspect of the embodiments of the present invention, a hydrogen storage material vacuum heat treatment furnace includes:
the furnace shell is of a double-layer water cooling sleeve structure;
the heating assembly is arranged in the furnace shell and comprises a heat insulation layer, a heater and a workpiece support, the heat insulation layer is arranged in the furnace shell in a hexahedral structure in a surrounding mode, a cooling area used for cooling is formed between the heat insulation layer and the furnace shell, a heating chamber is formed inside the heat insulation layer, the heaters with independent temperature control are uniformly distributed on six surfaces of the heating chamber to form six heating areas, the workpiece support is fixed in the heating chamber and used for placing the workpiece, an introduction electrode is mounted on the furnace shell, one end of the introduction electrode is connected with the heater, and the other end of the introduction electrode is externally connected with a power supply device;
the vacuum unit is arranged on the outer side of the furnace shell and is connected into the heating chamber, and the heating chamber in the furnace shell is evacuated by the vacuum unit;
the charging and discharging unit is arranged on the outer side of the furnace shell and is connected into the heating chamber, and inert protective gas is charged into the heating chamber in the furnace shell through the charging and discharging unit;
the air cooling unit is arranged outside the furnace shell and is connected into the heating chamber, and the air cooling unit is used for cooling the workpiece in the heating chamber;
the water cooling unit is respectively connected with the furnace shell, the vacuum unit and the air cooling unit and used for cooling the furnace shell, the vacuum unit and the air cooling unit;
and the electric control unit is respectively connected with the heating assembly, the vacuum unit, the air charging and discharging unit, the air cooling unit and the water cooling unit to form interlocking protection control.
Furthermore, a frame support is arranged outside the heat insulation layer, and an insulation layer is arranged between the heat insulation layer and the heater.
Furthermore, the vacuum unit comprises a diffusion pump, a roots pump and a slide valve pump, and the slide valve pump, the roots pump and the diffusion pump are communicated into the heating chamber through pipelines in sequence to form a set of three-stage pump vacuum unit.
Furthermore, the inflation and deflation unit comprises a main inflation channel and an auxiliary inflation channel, the main inflation channel and the auxiliary inflation channel are connected in parallel to form the inflation and deflation unit, one end of the inflation and deflation unit is connected into the heating chamber, and the other end of the inflation and deflation unit is connected with the inflation and deflation equipment.
Further, the air cooling unit comprises a motor, an impeller, a heat exchanger and a cooling air channel, the motor is fixed on the outer wall of the furnace shell, the impeller, the heat exchanger and the cooling air channel are all arranged in a cooling area of the furnace shell, the impeller is connected with an output shaft of the motor at the rear side of the heating chamber, the heat exchanger is arranged between the heating chamber and the impeller, the cooling air channels are respectively arranged above and below the heating chamber, one end of the cooling air channel is connected with an air port of the heat exchanger, and the other end of the cooling air channel is communicated to the heating chamber to form a closed air circulation channel.
Furthermore, a temperature measuring unit is arranged on the furnace shell and comprises six S-shaped thermocouples, the six S-shaped thermocouples correspond to the heaters on the six surfaces of the heating chamber one by one, and the S-shaped thermocouples are connected with the control unit through a circuit to control the temperature of each area of the heating chamber.
The embodiment of the utility model provides a have following advantage: the method comprises the steps of placing materials on a workpiece support, vacuumizing a heating chamber by using a vacuum unit, heating according to a set process curve by using a control unit after a certain vacuum degree is reached, arranging heaters on six surfaces of the heating chamber, designing the whole heating chamber into six heating areas, controlling the temperature of each heating area independently, enabling the temperature uniformity of equipment to reach +/-1.5 ℃ so as to ensure good temperature consistency of hydrogen storage materials, stopping vacuumizing by using a vacuum unit after the heating to a set temperature, inflating and deflating the furnace shell by using an inflation and deflation unit, stopping inflating after the pressure in the heating chamber reaches the set pressure, stopping heating after the heating is finished, inflating and deflating the furnace shell again by using the inflation and deflation unit, starting an air cooling unit after the pressure in the heating chamber reaches the set pressure, stopping a fan after the air cooling temperature is reduced to the set temperature, opening a furnace door, taking materials and facilitating operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a schematic view of the overall structure of a vacuum heat treatment furnace for hydrogen storage materials according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the furnace shell of a vacuum heat treatment furnace for hydrogen storage materials according to an embodiment of the present invention;
fig. 3 is a side view of a furnace shell of a vacuum heat treatment furnace for hydrogen storage materials according to an embodiment of the present invention.
In the figure: 1. a furnace shell; 2. a heating assembly; 21. a thermal insulation layer; 211. a heating chamber; 22. a heater; 23. supporting a workpiece; 24. introducing an electrode; 3. a vacuum unit; 4. an air charging and discharging unit; 5. an air-cooling unit; 51. a motor; 52. an impeller; 53. a heat exchanger; 54. a cooling air duct; 6. a water cooling unit; 7. an electronic control unit; 8. a temperature measuring unit.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, the embodiment of the utility model provides a hydrogen storage material vacuum heat treatment furnace, including stove outer covering 1, heating element 2, vacuum unit 3, fill gassing unit 4, air cooling unit 5, water cooling unit 6 and electrical control unit 7, specifically set up as follows:
the stove outer covering 1 is double-deck water-cooling jacket structure to ensure that the temperature of stove outer covering 1 outer wall is not more than 40 degrees when heating element 2 during operation, preferably, stove outer covering 1 can constitute by furnace body, furnace gate and interface, and the furnace gate is opened (can take the location) for manual rotation side to by cylinder drive locking ring, convenient operation, safe and reliable. The heating component 2 is arranged in the furnace shell 1 and comprises a heat insulation layer 21, a heater 22 and a workpiece support 23, the heat insulation layer 21 is arranged in a hexahedron structure in the furnace shell 1, a cooling area for cooling is formed between the heat insulation layer 21 and the furnace shell 1, a heating chamber 211 (refer to fig. 3) is formed inside the heat insulation layer 21, the heaters 22 with independent temperature control are uniformly arranged on six surfaces of the heating chamber 211 to form six heating areas, the workpiece support 23 is fixed in the heating chamber 211 and used for placing workpieces, an introduction electrode 24 is arranged on the furnace shell 1, one end of the introduction electrode 24 is connected with the heater 22, and the other end is externally connected with a power supply device to supply power through the introduction electrode 24 and start heating. The heat insulation layer 21 is composed of molybdenum screen and alumina fiber, the heater 22 is a high-temperature molybdenum heating belt (which can have a special deformation-proof structure), and the workpiece support 23 is made of molybdenum material. Preferably, a frame support is provided outside the heat insulating layer 21, and an insulating layer is provided between the heat insulating layer 21 and the heater 22, so that the insulating layer serves to insulate between the heater 22 and the heat insulating layer 21.
As described above, the vacuum unit 3 is disposed outside the furnace shell 1 and inserted into the heating chamber 211, so that the vacuum unit 3 evacuates the heating chamber 211 in the furnace shell 1, and the vacuum unit includes the diffusion pump, the roots pump, and the slide valve pump, and is communicated to the heating chamber 211 through the pipeline by the slide valve pump, the roots pump, and the diffusion pump in sequence, so as to constitute a set of three-stage pump vacuum units. The charging and discharging unit 4 is arranged at the outer side of the furnace shell 1 and is connected into the heating chamber 211, so that the charging and discharging unit 4 charges inert protective gas into the heating chamber 211 in the furnace shell 1, the charging and discharging unit 4 comprises a main charging channel and an auxiliary charging channel, the main charging channel and the auxiliary charging channel are connected in parallel, one end of the charging and discharging unit is connected into the heating chamber 211, and the other end of the charging and discharging unit is externally connected with charging and discharging equipment, wherein the charging and discharging unit can be charged with inert protective gas such as argon according to the process requirements, so that the inert protective gas such as argon is required to be charged in the heating and cooling processes. The air cooling unit 5 is installed outside the furnace shell 1 and is connected into the heating chamber 211, so that the air cooling unit 5 cools the workpiece in the heating chamber 211, the air cooling unit 5 comprises a motor 51, an impeller 52, a heat exchanger 53 and a cooling air duct 54, the motor 51 is fixed on the outer wall of the furnace shell 1, the impeller 52, the heat exchanger 53 and the cooling air duct 54 are all arranged in the cooling area of the furnace shell 1, the impeller 52 is connected with an output shaft of the motor 51 at the rear side of the heating chamber 211 and forms a fan, the heat exchanger 53 is arranged between the heating chamber 211 and the fan, the cooling air ducts 54 are respectively arranged above and below the heating chamber 211, one end of the cooling air duct 54 is connected with an air opening of the heat exchanger 53, the other end is communicated with the heating chamber 211, wherein the cooling air duct 54 above the heating chamber 211 is connected with an air outlet of the heat exchanger 53, the cooling air duct 54 below the heating chamber 211 is connected with an air inlet of the heat exchanger 53, to form a closed gas circulation channel. The water cooling unit 6 is respectively connected with the furnace shell 1, the vacuum unit 3 and the air cooling unit 5 and mainly comprises a water inlet pipe, a butterfly valve, a water return pipe, an electric contact pressure gauge, a water hose and the like, wherein the electric contact pressure gauge is arranged on the water inlet pipeline and is used for providing signals to the control unit when the water pressure is insufficient, and then the control unit judges and alarms or cuts off the power supply to cool the furnace shell 1, the vacuum unit 3, the air cooling unit 5 and the like. The electric control unit 7 is respectively connected with the heating component 2, the vacuum unit 3, the air charging and discharging unit 4, the air cooling unit 5 and the water cooling unit 6 to form interlocking protection control, the control unit is completed by a German Siemens programmable controller S7-200smart, multi-region temperature control is completed by program control of a PLC, the unit adopts set value filtering double freedom degrees and measurement value differential advanced PID control, fuzzy correction can be added in a low-temperature section, and the adopted region PID control function is realized. Wherein, the furnace shell 1 is further provided with a temperature measuring unit 8, the temperature measuring unit 8 comprises six S-shaped thermocouples, the six S-shaped thermocouples correspond to the heaters 22 on the six surfaces of the heating chamber 211 one by one, and the S-shaped thermocouples are in circuit connection with the control unit 7 so as to independently control the temperature of each area in the heating chamber 211.
The specific operation process is as follows:
the material is placed on the workpiece support 23, the furnace door is closed, the heating chamber 211 is evacuated by the vacuum unit 3, after a certain vacuum degree is reached, the control unit 7 heats according to a set process curve, the leading-in electrode 24 is used for supplying power and starting heating, when the heating chamber is heated to a set temperature (displayed by the temperature measuring unit 8), the vacuum unit 3 stops evacuation, the charging and discharging unit 4 charges air into the heating chamber 211, the charging and discharging unit stops charging air after the pressure in the heating chamber 211 reaches the set pressure, after the heating is finished, the leading-in electrode 24 is powered off, the heating is stopped, the charging and discharging unit 4 charges air into the heating chamber 211 again, after the pressure in the heating chamber 211 reaches the set pressure, the air cooling unit 5 is started and starts air cooling, after the temperature is reduced to the set temperature, the air cooling unit 5 stops, the furnace door is opened, and the material is taken.
The embodiment of the utility model provides an utilize six faces of heating chamber 211 to arrange heater 22, be six the zone of heating with whole heating chamber 211 design, and every zone of heating is accuse temperature alone respectively to compare in traditional vacuum heat treatment equipment temperature uniformity and reach 8 ℃, the equipment temperature uniformity of this embodiment can reach in 1.5 ℃, in order to guarantee that hydrogen storage material's temperature uniformity is good.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A hydrogen storage material vacuum heat treatment furnace, characterized in that, the hydrogen storage material vacuum heat treatment furnace includes:
the furnace shell is of a double-layer water cooling sleeve structure;
the heating assembly is arranged in the furnace shell and comprises a heat insulation layer, a heater and a workpiece support, the heat insulation layer is arranged in the furnace shell in a hexahedral structure in a surrounding mode, a cooling area used for cooling is formed between the heat insulation layer and the furnace shell, a heating chamber is formed inside the heat insulation layer, the heaters with independent temperature control are uniformly distributed on six surfaces of the heating chamber to form six heating areas, the workpiece support is fixed in the heating chamber and used for placing the workpiece, an introduction electrode is mounted on the furnace shell, one end of the introduction electrode is connected with the heater, and the other end of the introduction electrode is externally connected with a power supply device;
the vacuum unit is arranged on the outer side of the furnace shell and is connected into the heating chamber, and the heating chamber in the furnace shell is evacuated by the vacuum unit;
the charging and discharging unit is arranged on the outer side of the furnace shell and is connected into the heating chamber, and inert protective gas is charged into the heating chamber in the furnace shell through the charging and discharging unit;
the air cooling unit is arranged outside the furnace shell and is connected into the heating chamber, and the air cooling unit is used for cooling the workpiece in the heating chamber;
the water cooling unit is respectively connected with the furnace shell, the vacuum unit and the air cooling unit and used for cooling the furnace shell, the vacuum unit and the air cooling unit;
and the electric control unit is respectively connected with the heating assembly, the vacuum unit, the air charging and discharging unit, the air cooling unit and the water cooling unit to form interlocking protection control.
2. The vacuum heat treatment furnace for hydrogen storage materials according to claim 1, characterized in that: the frame support is arranged outside the heat insulation layer, and an insulation layer is arranged between the heat insulation layer and the heater.
3. The vacuum heat treatment furnace for hydrogen storage materials according to claim 1, characterized in that: the vacuum unit comprises a diffusion pump, a roots pump and a slide valve pump, and the slide valve pump, the roots pump and the diffusion pump are communicated into the heating chamber through pipelines in sequence to form a set of three-stage pump vacuum unit.
4. The vacuum heat treatment furnace for hydrogen storage materials according to claim 1, characterized in that: the inflation and deflation unit comprises a main inflation channel and an auxiliary inflation channel, and is formed by connecting the main inflation channel and the auxiliary inflation channel in parallel, one end of the inflation and deflation unit is connected into the heating chamber, and the other end of the inflation and deflation unit is connected with the inflation and deflation equipment.
5. The vacuum heat treatment furnace for hydrogen storage materials according to claim 1, characterized in that: the air cooling unit comprises a motor, an impeller, a heat exchanger and a cooling air channel, the motor is fixed on the outer wall of the furnace shell, the impeller, the heat exchanger and the cooling air channel are all arranged in a cooling area of the furnace shell, the impeller is connected with an output shaft of the motor on the rear side of the heating chamber, the heat exchanger is arranged between the heating chamber and the impeller, the cooling air channels are respectively arranged above and below the heating chamber, one end of the cooling air channel is connected with an air port of the heat exchanger, and the other end of the cooling air channel is communicated to the inside of the heating chamber to form a closed air circulation channel.
6. The vacuum heat treatment furnace for hydrogen storage materials according to claim 1, characterized in that: the furnace shell is provided with a temperature measuring unit which comprises six S-shaped thermocouples, the six S-shaped thermocouples correspond to the heaters on the six surfaces of the heating chamber one by one, and the S-shaped thermocouples are in circuit connection with the control unit so as to control the temperature of each area of the heating chamber.
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| CN202022868095.2U CN213977814U (en) | 2020-12-03 | 2020-12-03 | Vacuum heat treatment furnace for hydrogen storage material |
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| CN202022868095.2U CN213977814U (en) | 2020-12-03 | 2020-12-03 | Vacuum heat treatment furnace for hydrogen storage material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018043A (en) * | 2021-11-05 | 2022-02-08 | 沈阳恒进真空科技有限公司 | Vacuum heat treatment furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018043A (en) * | 2021-11-05 | 2022-02-08 | 沈阳恒进真空科技有限公司 | Vacuum heat treatment furnace |
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