CN112259315B - Heat dissipation system for electromagnetic forming coil - Google Patents
Heat dissipation system for electromagnetic forming coil Download PDFInfo
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- CN112259315B CN112259315B CN202011060643.7A CN202011060643A CN112259315B CN 112259315 B CN112259315 B CN 112259315B CN 202011060643 A CN202011060643 A CN 202011060643A CN 112259315 B CN112259315 B CN 112259315B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/20—Cooling by special gases or non-ambient air
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Induction Heating (AREA)
- Furnace Details (AREA)
Abstract
The invention belongs to the technical field of electromagnetic forming coils, and particularly relates to a heat dissipation system for an electromagnetic forming coil, which comprises a forming unit, an air supply unit and a control unit, wherein the forming unit is used for forming a plurality of coils; the forming unit is used for performing electromagnetic forming when receiving the first signal sent by the control unit; the air supply unit is used for supplying air to the forming coil when receiving the second signal sent by the control unit; the control unit is internally pre-stored with pulse duration and interval duration, and after the control unit continuously sends the first signal pulse duration to the forming unit, the control unit continuously sends the second signal interval duration to the forming unit; the interval duration of the first signal sent by the control unit to the forming unit is not less than the interval duration. By using the system, the stability of the performance of the coil can be guaranteed, the loss efficiency of the coil can be very low, and the service performance, the stability and the service life of the coil can be guaranteed.
Description
Technical Field
The invention belongs to the technical field of electromagnetic forming coils, and particularly relates to a heat dissipation system for an electromagnetic forming coil.
Background
The electromagnetic forming technology is a technological process for forming metal by utilizing magnetic force, and its principle is that a capacitor and a control switch form a discharge circuit, and the instantaneous current can be passed through working coil to produce strong magnetic field, at the same time, the induced current and magnetic field can be produced in the metal workpiece, and the instantaneous high-voltage pulse magnetic field can be used for forcing workpiece to be formed at high speed under the action of impact electromagnetic force.
However, in order to obtain a magnetic field capable of machining a workpiece, a coil needs to have a high voltage and a large current to pass through during machining. However, the working environment with high voltage and large current can meet the working requirements, but also can cause the temperature of the coil to become higher, and the temperature of the coil is increased, so that the working stability of the coil is difficult to guarantee, and the working life of the coil per se can be influenced accordingly.
However, if the coil is operated for a period of time, the device is stopped to perform heat dissipation treatment on the coil, and the coil is processed after the temperature of the coil is recovered to an ideal interval, and the actual effect is not ideal. On one hand, the equipment is stopped to carry out heat dissipation treatment on the coil every time the equipment works for a period of time, and the working efficiency of electromagnetic forming is not influenced a little; on the other hand, during the working period, the coil still keeps a high temperature, and the stability and the working life are still influenced to a certain extent.
Therefore, there is a need for a heat dissipation system for an electromagnetically formed coil that enables the coil to maintain high operating efficiency stably for a long period of time.
Disclosure of Invention
The invention aims to provide a heat dissipation system for an electromagnetic forming coil, which can ensure that the coil can stably maintain high working efficiency for a long time.
The basic scheme provided by the invention is as follows:
the heat dissipation system for the electromagnetic forming coil comprises a forming unit, an air supply unit and a control unit;
the forming unit is used for performing electromagnetic forming when receiving the first signal sent by the control unit; the air supply unit is used for supplying air to the forming coil when receiving the second signal sent by the control unit;
the control unit is internally pre-stored with pulse duration and interval duration, and after the control unit continuously sends the first signal pulse duration to the forming unit, the control unit continuously sends the second signal interval duration to the forming unit; the interval duration of the first signal sent by the control unit to the forming unit is not less than the interval duration.
Basic scheme theory of operation and beneficial effect:
when the system is used for electromagnetic forming processing, the control unit can automatically control the forming unit to work. And when the control unit controls the forming unit (coil) to be started, the air supply unit does not supply air, so that the coil can be prevented from gas arc breakdown.
After the working pulse duration of the forming unit, the forming unit finishes the single processing of the workpiece, and meanwhile, the coil is quickly heated in the working process of the forming unit; therefore, the air supply unit is controlled to be started, and air is supplied to the coil by the air supply unit to cool the coil; after the interval is long, the temperature of the coil and the temperature around the coil are restored to the ideal temperature, the control unit controls the forming unit to be started again and controls the air supply unit to be closed again, and the forming unit works again.
Through the reasonable interval duration that sets up, can be in the in-process of coil work, continuously cool off it, make it keep in a suitable temperature interval, like this, not only can ensure the stability of coil performance, the consume efficiency of coil also can become very little, promptly, the performance, the stability and the life of coil have all obtained powerful the guarantee.
By using the system, the coil can stably maintain higher working efficiency for a long time.
Further, when the control unit continuously works, the interval duration is increased by Y seconds every time the accumulated opening time of the forming unit exceeds X minutes.
The control unit works continuously, the system is in a continuous working state, the accumulated working time of the forming unit exceeds X minutes, the accumulated electrifying time of the coil exceeds X minutes, and although the air supply unit cools the coil all the time, the effect is not ideal at the beginning, so the interval time is increased by Y seconds, and the coil continuously has a good heat dissipation effect.
Further, when the control unit continuously works and the accumulated working time of the forming unit reaches M minutes, the control unit controls the forming unit to be closed and controls the air supply unit to work for N minutes, the accumulated working time of the forming unit is reset to zero, and the initial pulse time and interval time are recovered, wherein M is larger than X.
When the accumulated working time of the forming unit reaches M minutes, the forming unit works for too long time, if the single interval time is continuously increased, the single interval time is too long, and the working efficiency of the forming unit is also deteriorated. Therefore, the control unit controls the forming unit to be closed and controls the air supply unit to work for N minutes, so that the forming unit can be fully cooled and rested, and then the processing is carried out.
Furthermore, the control unit is also used for adjusting the initial values of the pulse duration and the interval duration.
The staff can set up, adjust relevant parameter according to coil and the concrete performance of air supply unit oneself to make the better work of coil.
Furthermore, the control unit is pre-stored with reference initial values of the pulse duration and the interval duration.
Because the functions of the forming units are basically not different greatly, the initial values of the parameters can be used as basic values, and on the basis of referring to the initial values, workers can adjust the initial values according to specific requirements and actual processing conditions.
Further, the control unit is also used for adjusting the air inlet quantity of the air supply unit.
The staff can carry out the air input of cooling gas according to actual demand and adjust.
Further, the air treatment device comprises an air treatment unit which is used for treating the air sent by the air supply unit and then sending the treated air to the forming coil.
The gas is directly fed into the coil without treatment, which may cause problems (e.g., short circuit) in the coil if moisture or the like is present in the gas. After the gas processing unit is arranged, the air sent by the air supply unit is processed and then sent to the coil, so that the situation can be avoided, and the possibility of accidents of the coil is reduced.
Further, the gas treatment unit includes a dry room and a pneumatic triplet.
The cooling gas entering the coil can be ensured to be dry and free of impurities.
Furthermore, the gas treatment unit also comprises a flow divider, and the drying room, the pneumatic triple piece and the flow divider are sequentially arranged according to the flowing sequence of the gas.
After the shunt is arranged, the treated gas can be divided into different positions where the parts of the treated gas enter the coil, so that the heat dissipation of the coil is more uniform.
Further, the cooling gas sent by the air supply unit is air or nitrogen.
Drawings
Fig. 1 is a logic block diagram of a first embodiment of a heat dissipation system for an electromagnetic forming coil according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
example one
As shown in fig. 1, the heat dissipation system for an electromagnetic forming coil includes a forming unit, an air supply unit, and a control unit. In this embodiment, the control unit is an industrial PC. The control unit is electrically connected with the forming unit and the air supply unit respectively.
The shaping unit is used for performing electromagnetic shaping when receiving the first signal sent by the control unit.
And the air supply unit is used for supplying air to the forming coil when receiving the second signal sent by the control unit. The cooling gas sent by the air supply unit is air or nitrogen, and in the embodiment, the cooling gas is air.
The control unit is internally pre-stored with pulse duration and interval duration, and after the control unit continuously sends the first signal pulse duration to the forming unit, the control unit continuously sends the second signal interval duration to the forming unit; the interval duration of the first signal sent by the control unit to the forming unit is not less than the interval duration
The control unit is internally pre-stored with reference initial values of pulse duration and interval duration; the control unit is also used for adjusting the initial values of the pulse duration and the interval duration. The control unit is also used for adjusting the air inlet quantity of the air supply unit.
When the control unit continuously works, the interval duration is increased by Y seconds every time the accumulated opening time of the forming unit exceeds X minutes. When the control unit continuously works and the accumulated working time of the forming unit reaches M minutes, the control unit controls the forming unit to be closed and controls the air supply unit to work for N minutes, the accumulated working time of the forming unit is reset to zero, the initial pulse time and the initial interval time are recovered, and M is larger than X. X, Y, M and N, can be set by those skilled in the art according to the specific performance of the shaping unit and the blowing unit.
The specific implementation process is as follows:
before the system is used, a worker can set and adjust relevant parameters according to the specific performances of the coil and the air supply unit so as to enable the coil to work better. Because the functions of the forming units are basically not different greatly, the initial values of the parameters can be used as basic values, and on the basis of referring to the initial values, workers can adjust the initial values according to specific requirements and actual processing conditions. Meanwhile, the working personnel can also adjust the air inflow of the cooling gas according to the actual requirement.
After the system is formally operated, the control unit can automatically control the forming unit to work. And when the control unit controls the forming unit (coil) to be started, the air supply unit does not supply air, so that the coil can be prevented from gas arc breakdown. After the control unit controls the forming unit to be started and controls the air supply unit to be closed for pulse duration, the forming unit finishes single processing on the workpiece, and meanwhile, the coil is rapidly heated in the working process of the forming unit; therefore, the air supply unit is controlled to be started, and air is supplied to the coil by the air supply unit to cool the coil; after the interval is long, the temperature of the coil and the temperature around the coil are restored to the ideal temperature, the control unit controls the forming unit to be started again and controls the air supply unit to be closed again, and the forming unit works again.
Through the reasonable interval duration that sets up, can be in the in-process of coil work, continuously cool off it, make it keep in a suitable temperature interval, like this, not only can ensure the stability of coil performance, the consume efficiency of coil also can become very little, promptly, the performance, the stability and the life of coil have all obtained powerful the guarantee.
When the system is in a continuous working state (the control unit works continuously), the accumulated working time of the forming unit exceeds X minutes, which indicates that the accumulated electrifying time of the coil exceeds X minutes, although the air supply unit cools the coil all the time, the effect is not ideal at the beginning, therefore, the interval time is increased by Y seconds, so that the coil continuously has a good heat dissipation effect.
In addition, when the accumulated working time of the forming unit reaches M minutes, the forming unit has already worked for an excessively long time, and if the single interval time is continuously increased, the single interval time will appear to be excessively long, and the working efficiency of the forming unit will also be deteriorated. Therefore, the control unit controls the forming unit to be closed and controls the air supply unit to work for N minutes, so that after the forming unit obtains sufficient cooling and rest, the accumulated working time of the forming unit is reset to zero, the initial pulse time and the interval time are recovered, and then the machining is carried out again.
Example two
Different from the first embodiment, the present embodiment further includes a gas processing unit for processing the wind sent by the wind sending unit and then sending the processed wind to the forming coil. Specifically, the gas treatment unit comprises a drying chamber, a pneumatic triple piece and a flow divider which are sequentially arranged according to the flowing sequence of gas.
The gas is directly fed into the coil without treatment, which may cause problems (e.g., short circuit) in the coil if moisture or the like is present in the gas. After the gas processing unit is arranged, the air sent by the air supply unit is processed and then sent to the coil, so that the situation can be avoided, and the possibility of accidents of the coil is reduced. The drying chamber and the pneumatic triple piece can ensure that cooling gas entering the coil is dry and free of impurities. After the flow divider is arranged, the processed gas can be divided into different positions where multiple parts enter the coil, so that the heat dissipation of the coil is more uniform.
EXAMPLE III
Different from the second embodiment, in the second embodiment, the forming coil is fixed in the mounting box, the bottom surface of the mounting box is provided with a plurality of one-way air inlets, the top surface of the mounting box is provided with a plurality of one-way air outlets, and the splitter supplies air into the mounting box through the one-way air inlets.
The air outlet pipe of the air conditioning unit is connected with a shunt pipe; the flow dividing pipe is provided with a first air outlet end and a second air outlet end, the end of the first air outlet pipe is communicated with the air inlet end of the drying room, and the second air outlet end faces the air inlet of the air conditioning unit; the ports of the first air outlet end and the second air outlet end are respectively and fixedly provided with a first electromagnetic valve and a second electromagnetic valve; a temperature sensor is fixedly arranged in the first air outlet end; the air conditioning unit, the temperature sensor, the first electromagnetic valve and the second electromagnetic valve are respectively and electrically connected with the control unit;
the inner wall of the mounting box is fixedly provided with the thermosensitive sticker, the mounting box also comprises a camera unit for collecting images of the thermosensitive sticker, and the camera unit is electrically connected with the control unit; the control unit is also used for analyzing the cooling effect according to the thermosensitive sticker image shot by the shooting unit; when the analysis result of the control unit indicates that the refrigeration effect is insufficient, the control unit controls the air conditioning unit to work, and simultaneously closes the first electromagnetic valve and opens the second electromagnetic valve; when the control unit controls the air conditioning unit to work, the control unit controls the second electromagnetic valve to be closed and opens the first electromagnetic valve when the temperature fed back by the temperature sensor is not higher than the preset temperature; the control unit is also used for adjusting the wind power of the air conditioner and the air supply quantity of the air supply unit according to the analysis result of the cooling effect after the first electromagnetic valve is opened.
The specific implementation process is as follows:
because the temperature-sensitive sticker can change color according to temperature, according to the color of temperature-sensitive sticker, can know the temperature condition in the installation box at present, if the analysis result of the control unit is that the refrigeration effect is not enough, then show that the refrigeration effect is unsatisfactory, need strengthen. Therefore, the control unit controls the air conditioning unit to work, and after the air conditioning unit starts to work, because the temperature of air blown out from the air outlet end of the air conditioning unit is possibly not ideal when the air conditioning starts to work, the air is directly used for radiating heat of the electromagnetic coil, the effect is possibly not ideal, and therefore the first electromagnetic valve is closed and the second electromagnetic valve is opened. Because the first electromagnetic valve is closed and the second electromagnetic valve is opened, only the second air outlet end is conducted at the moment, the air at the second air outlet end can blow to the air inlet of the air conditioning unit, and the air conditioning unit can accelerate the refrigeration effect after absorbing the refrigerated air.
When the control unit controls the air conditioning unit to work, after the temperature fed back by the temperature sensor is not higher than the preset temperature, the fact that the air blown out by the air conditioning has a sufficient refrigerating effect is shown, therefore, the second electromagnetic valve is controlled to be closed and the first electromagnetic valve is controlled to be opened, the air blown out by the air conditioning is sent into the drying room at the moment, and after the air blown out by the air conditioning is mixed with the air sent by the air supply unit, the coil is cooled, and the cooling requirement is met.
Meanwhile, due to the fact that the degrees of insufficient heat dissipation are different, the heat dissipation requirement degrees are also different, and the proportion of the required air conditioning air to the air of the air supply unit is different, therefore, after the control unit opens the first electromagnetic valve, the wind power of the air conditioner and the air supply quantity of the air supply unit are adjusted according to the analysis result of the cooling effect, the proportion of the air conditioning air to the air of the air supply unit is adjusted, and the proportion of the air conditioning air to the air of the air supply unit is matched with the heat dissipation requirement of the coil.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. A heat dissipation system for an electromagnetically formed coil, characterized by: comprises a forming unit, an air supply unit and a control unit;
the forming unit is used for performing electromagnetic forming when receiving the first signal sent by the control unit; the air supply unit is used for supplying air to the forming coil when receiving the second signal sent by the control unit;
the control unit is internally pre-stored with pulse duration and interval duration, and after the time for the control unit to continuously send the first signal to the forming unit reaches the pulse duration, the control unit continuously sends a second signal of the interval duration to the control forming unit; the interval duration of the first signal sent by the control unit to the forming unit is not less than the interval duration;
the air treatment unit is used for treating the air fed by the air supply unit and then feeding the air to the forming coil; the gas treatment unit comprises a drying room, a pneumatic triple piece and a flow divider, wherein the drying room, the pneumatic triple piece and the flow divider are sequentially arranged according to the flowing sequence of gas;
the forming coil is fixed in the mounting box, a plurality of one-way air inlets are formed in the bottom surface of the mounting box, a plurality of one-way air outlets are formed in the top surface of the mounting box, and the splitter supplies air into the mounting box through the one-way air inlets;
the air outlet pipe of the air conditioning unit is connected with a shunt pipe; the flow dividing pipe is provided with a first air outlet end and a second air outlet end, the first air outlet end is communicated with the air inlet end of the drying room, and the second air outlet end faces the air inlet of the air conditioning unit; the ports of the first air outlet end and the second air outlet end are respectively and fixedly provided with a first electromagnetic valve and a second electromagnetic valve; a temperature sensor is fixedly arranged in the first air outlet end; the air conditioning unit, the temperature sensor, the first electromagnetic valve and the second electromagnetic valve are respectively and electrically connected with the control unit;
the inner wall of the mounting box is fixedly provided with the thermosensitive sticker, the mounting box also comprises a camera unit for collecting images of the thermosensitive sticker, and the camera unit is electrically connected with the control unit; the control unit is also used for analyzing the cooling effect according to the thermosensitive sticker image shot by the shooting unit; when the analysis result of the control unit indicates that the refrigeration effect is insufficient, the control unit controls the air conditioning unit to work, and simultaneously closes the first electromagnetic valve and opens the second electromagnetic valve; when the control unit controls the air conditioning unit to work, the control unit controls the second electromagnetic valve to be closed and opens the first electromagnetic valve when the temperature fed back by the temperature sensor is not higher than the preset temperature; the control unit is also used for adjusting the wind power of the air conditioner and the air supply quantity of the air supply unit according to the analysis result of the cooling effect after the first electromagnetic valve is opened.
2. The heat dissipation system for an electromagnetically shaped coil as claimed in claim 1, wherein: when the control unit continuously works, the interval duration is increased by Y seconds every time the accumulated opening time of the forming unit exceeds X minutes.
3. The heat dissipation system for an electromagnetically shaped coil as claimed in claim 2, wherein: when the control unit continuously works and the accumulated working time of the forming unit reaches M minutes, the control unit controls the forming unit to be closed and controls the air supply unit to work for N minutes, the accumulated working time of the forming unit is reset to zero, and the initial pulse time and interval time are recovered, wherein M is larger than X.
4. The heat dissipation system for an electromagnetically shaped coil as claimed in claim 1, wherein: the control unit is also used for adjusting the initial values of the pulse duration and the interval duration.
5. The heat dissipation system for an electromagnetic forming coil of claim 4, wherein: the control unit is pre-stored with reference initial values of pulse duration and interval duration.
6. The heat dissipation system for an electromagnetically shaped coil as claimed in claim 1, wherein: the control unit is also used for adjusting the air inlet quantity of the air supply unit.
7. The heat dissipation system for an electromagnetically shaped coil as claimed in claim 1, wherein: the cooling gas sent by the air supply unit is air or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011060643.7A CN112259315B (en) | 2020-09-30 | 2020-09-30 | Heat dissipation system for electromagnetic forming coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011060643.7A CN112259315B (en) | 2020-09-30 | 2020-09-30 | Heat dissipation system for electromagnetic forming coil |
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| CN112259315A CN112259315A (en) | 2021-01-22 |
| CN112259315B true CN112259315B (en) | 2022-05-17 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003653A1 (en) * | 1988-09-29 | 1990-04-05 | Astec America Inc. | Magnet molding apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2609137A1 (en) * | 2005-05-16 | 2006-11-23 | Mehmet Terziakin | Hot forming system for metal workpieces |
| CN2887479Y (en) * | 2006-03-07 | 2007-04-11 | 华中科技大学 | Moving electromagnetic coil device for gradual panel forming |
| CN108405700B (en) * | 2018-04-02 | 2024-04-19 | 三峡大学 | Flexible electromagnetic forming method and device for coupling cooling type pipe fitting |
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2020
- 2020-09-30 CN CN202011060643.7A patent/CN112259315B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003653A1 (en) * | 1988-09-29 | 1990-04-05 | Astec America Inc. | Magnet molding apparatus and method |
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