CN107249227B - Heating device and heating method for motor oil seal hot jacket - Google Patents
Heating device and heating method for motor oil seal hot jacket Download PDFInfo
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- CN107249227B CN107249227B CN201710560122.XA CN201710560122A CN107249227B CN 107249227 B CN107249227 B CN 107249227B CN 201710560122 A CN201710560122 A CN 201710560122A CN 107249227 B CN107249227 B CN 107249227B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
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Abstract
The invention discloses a heating device of a motor oil seal hot jacket, which comprises an induction coil and an alternating current power supply, wherein the induction coil can be matched with an inner cavity of an oil seal to be heated, and the alternating current power supply is connected with the induction coil. When the heating device is used, the induction coil can generate joule heat effect by switching on a current power supply, and further generates heat to heat the oil seal; simultaneously according to the electromagnetic induction heating principle, can produce the magnetic field of alternation around induction coil, the line of magnetic induction in magnetic field can heat the oil blanket through the oil blanket. Compare the baker heating that adopts in traditional heat jacket in-process, above-mentioned heating device can directly heat oil blanket itself, and heating efficiency improves greatly to utilize joule heat effect and electromagnetic induction heating principle simultaneously, improved the utilization ratio of the energy greatly. In addition, the invention also discloses a heating method of the motor oil seal hot jacket.
Description
Technical Field
The invention relates to the technical field of motor assembly, in particular to a heating device and a heating method for a motor oil seal hot jacket.
Background
The general motor oil seal is a disc-shaped part, the inner cavity of the general motor oil seal is matched with the surface of a rotating shaft, and the general motor oil seal is also provided with an annular labyrinth oil groove which is part of motor bearing lubrication.
Generally, the oil seal is in interference fit with the rotating shaft, and the oil seal is mainly installed on the rotating shaft in a shrink fit mode during assembly. The specific operation process is as follows: before the assembly, firstly the oil seal is heated to expand the oil seal to a proper inner diameter, then the oil seal is arranged at a corresponding position of the rotating shaft, and after the oil seal is cooled, the oil seal is in interference fit with the rotating shaft.
The heating method of the existing oil seal mainly adopts a baking oven to heat the whole oil seal. However, when the oven is used for heating, a certain time and baking temperature must be set for baking according to the matching interference magnitude of the inner diameter of the oil seal and the outer diameter of the rotating shaft so as to ensure that the expansion magnitude of the oil seal meets the assembly requirement. In the actual operation process of the heating method, the time for heating the oven is long, wherein the time comprises the temperature rise time and the heat preservation time of equipment, and the length of some of the time is 2 hours; the oven equipment occupies a large area; equipment purchasing cost and management cost are high, fire and explosion protection management is required for the oven, and the requirement on safety is very high; the equipment has high energy consumption in operation, and the electricity consumption per hour is up to tens of kilowatts. Therefore, the method not only has longer time consumption and lower working efficiency, but also has larger floor area and energy consumption of the oven drying equipment.
In summary, how to solve the problems of low working efficiency and large energy consumption of oil seal heating in the process of hot sleeving of the motor oil seal becomes a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a heating device and a heating method for a motor oil seal hot jacket, which are used for improving the working efficiency of oil seal heating of a motor oil seal in the hot jacket process and reducing energy consumption.
In order to achieve the purpose, the invention provides a heating device of a motor oil seal thermal sleeve, which comprises an induction coil and an alternating current power supply, wherein the induction coil can be matched with an inner cavity of an oil seal to be heated, and the alternating current power supply is connected with the induction coil.
Preferably, a power adapter is further arranged in front of the induction coil and the alternating current power supply, and the power adapter is used for controlling electric energy output parameters of the alternating current power supply.
Preferably, the power output parameters include voltage, power and frequency.
Preferably, the induction coil is made of a flexible cable or a hollow copper tube.
Compared with the introduction content of the background technology, the heating device of the motor oil seal thermal jacket comprises a heating device, wherein the heating device comprises an induction coil capable of being matched with the inner cavity of an oil seal to be heated and an alternating current power supply connected with the induction coil. When the heating device is used, the induction coil can generate joule heat effect by switching on a current power supply, and further generates heat to heat the oil seal; meanwhile, the oil seal is generally a disc-shaped part made of ferromagnetic metal materials such as cast steel and common steel plates, an alternating magnetic field can be generated around the induction coil according to the electromagnetic induction heating principle, and the magnetic induction line of the magnetic field can heat the oil seal through the oil seal. Compare the baker heating that adopts in traditional heat jacket in-process, above-mentioned heating device can directly heat oil blanket itself, and heating efficiency improves greatly to utilize joule heat effect and electromagnetic induction heating principle simultaneously, improved the utilization ratio of the energy greatly.
In addition, the invention also provides a heating method of the motor oil seal hot jacket, which comprises the following steps:
step S1: placing an induction coil into an inner cavity of an oil seal to be heated;
step S2: introducing alternating current to the induction coil;
step S3: and when the inner diameter of the oil seal expands to be larger than the outer diameter of the shaft end of the motor rotating shaft, the induction coil is stopped to be electrified.
Since the heating method follows the core concept of the heating device and the heating device has the technical effects, the heating method following the core concept of the heating device should have corresponding technical effects, which is not described herein again.
Preferably, the power output parameter of the alternating current in the step S2 is adjustable.
Preferably, the power output parameters include voltage, power and frequency.
Preferably, the induction coil in step S2 is made of a flexible cable or a hollow copper tube.
Drawings
Fig. 1 is a schematic structural diagram of a heating device of a motor oil seal thermal jacket provided in an embodiment of the invention;
fig. 2 is a flowchart of a method for heating a thermal sleeve of a motor oil seal according to an embodiment of the present invention.
In the above-mentioned figure 1, the first,
Detailed Description
The core of the invention is to provide a heating device and a heating method for a motor oil seal hot jacket, so as to improve the working efficiency of oil seal heating in the process of hot jacket of the motor oil seal and reduce energy consumption.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the heating device for the motor oil seal thermal jacket provided by the embodiment of the invention comprises an induction coil 1 which can be adapted to an inner cavity of an oil seal to be heated, and an alternating current power supply 2 connected with the induction coil 1.
It should be noted that, as those skilled in the art will understand, the oil seal of the motor is generally made of ferromagnetic metal material; in addition, the induction coil is matched with the inner cavity of the oil seal, namely the diameter of the induction coil is slightly smaller than that of the inner cavity of the oil seal, so that the induction coil is convenient to put in; in addition, the size, the number of turns, the material used and the like of the induction coil can be selected to be different according to the actual production situation, but the requirements of heating time, temperature, energy consumption and the like can be met.
Compared with the introduction content of the background technology, the heating device of the motor oil seal hot jacket has the advantages that when the heating device is used, the induction coil can generate the Joule heat effect by switching on the current power supply, and further heat is generated to heat the oil seal; meanwhile, the oil seal is generally a disc-shaped part made of ferromagnetic metal materials such as cast steel and common steel plates, an alternating magnetic field can be generated around the induction coil according to the electromagnetic induction heating principle, and the magnetic induction line of the magnetic field can heat the oil seal through the oil seal. Compare the baker heating that adopts in traditional heat jacket in-process, above-mentioned heating device can directly heat oil blanket itself, and heating efficiency improves greatly to utilize joule heat effect and electromagnetic induction heating principle simultaneously, improved the utilization ratio of the energy greatly.
In some specific embodiments, the induction coil 1 and the ac power supply 2 may be further provided with a power adapter, through which parameters of power output of the ac power supply, such as voltage, power and frequency, can be controlled, and through controlling parameters related to voltage, power and frequency output by the ac power supply, heating time, heating temperature and the like of the induction coil are controlled, so as to finally expand the inner diameter of the oil seal to be heated to a required size.
In some more specific embodiments, the induction coil 1 may be made of a flexible cable or a hollow copper tube. It is understood that the material of the induction coil is only an example of the induction coil according to the embodiment of the present invention, and may be other electromagnetic materials commonly used by those skilled in the art.
In addition, as shown in fig. 2, the invention also provides a heating method of the motor oil seal thermal sleeve, which comprises the following steps:
step S1: placing an induction coil 1 into an inner cavity of an oil seal to be heated;
step S2: alternating current is introduced into the induction coil 1;
step S3: and when the inner diameter of the oil seal expands to be larger than the outer diameter of the shaft end of the motor rotating shaft, the induction coil is stopped to be electrified.
Since the heating method follows the core concept of the heating device and the heating device has the technical effects, the heating method following the core concept of the heating device should have corresponding technical effects, which is not described herein again.
In some specific embodiments, the power output parameter of the alternating current in the step S2 is adjustable. For example, a power adapter is additionally arranged between an alternating current power supply and an induction coil, and related parameters such as voltage, power and frequency output by the alternating current power supply are adjusted through the power adapter, so that the control of heating conditions such as heating time and heating temperature of the induction coil is realized, and finally the inner diameter of the oil seal to be heated is expanded to the required size.
In some more specific embodiments, the induction coil 1 in step S2 may be made of a flexible cable or a hollow copper tube. It is understood that the material of the induction coil is only an example of the induction coil according to the embodiment of the present invention, and may be other electromagnetic materials commonly used by those skilled in the art.
The heating device and the heating method of the motor oil seal hot jacket provided by the invention are described in detail above. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The heating device for the motor oil seal hot jacket is characterized by comprising an induction coil (1) and an alternating current power supply (2), wherein the induction coil (1) can be matched with an inner cavity of an oil seal to be heated;
the oil seal is a disc-shaped piece made of ferromagnetic metal materials, the induction coil is matched with the inner cavity of the oil seal, and under the power-on state, on one hand, heat energy generated by the Joule heat effect of the induction coil is utilized to exchange heat with the oil seal; on the other hand utilizes the electromagnetic induction heating principle, can produce the magnetic field of alternation around induction coil, and the magnetic induction line in magnetic field passes through the oil blanket can heat the oil blanket.
2. The heating device of the motor oil seal thermal jacket as claimed in claim 1, characterized in that a power adapter is further arranged in front of the induction coil (1) and the alternating current power supply (2), and the power adapter is used for controlling the power output parameter of the alternating current power supply.
3. A heating unit for a motor oil seal thermal jacket as defined in claim 2, wherein said electrical power output parameters include voltage, power and frequency.
4. The heating device of the motor oil seal thermal jacket as claimed in claim 1, wherein the induction coil (1) is made of a flexible cable or a hollow copper tube.
5. A heating method of a motor oil seal hot jacket is characterized by comprising the following steps:
step S1: placing the induction coil (1) into an inner cavity of an oil seal to be heated;
step S2: alternating current is introduced into the induction coil (1);
step S3: when the inner diameter of the oil seal expands to be larger than the outer diameter of the shaft end of the motor rotating shaft, the induction coil is stopped to be electrified;
the oil seal is a disc-shaped piece made of ferromagnetic metal materials, the induction coil is matched with the inner cavity of the oil seal, and under the power-on state, on one hand, heat energy generated by the Joule heat effect of the induction coil is utilized to exchange heat with the oil seal; on the other hand utilizes the electromagnetic induction heating principle, can produce the magnetic field of alternation around induction coil, and the magnetic induction line in magnetic field passes through the oil blanket can heat the oil blanket.
6. The heating method as set forth in claim 5, wherein the electric power output parameter of the alternating current in the step S2 is adjustable.
7. The heating method of claim 6, wherein the electrical energy output parameters include voltage, power, and frequency.
8. The heating method according to claim 5, wherein the induction coil (1) in the step S2 is made of a flexible cable or a hollow copper tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560122.XA CN107249227B (en) | 2017-07-11 | 2017-07-11 | Heating device and heating method for motor oil seal hot jacket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560122.XA CN107249227B (en) | 2017-07-11 | 2017-07-11 | Heating device and heating method for motor oil seal hot jacket |
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| Publication Number | Publication Date |
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| CN107249227A CN107249227A (en) | 2017-10-13 |
| CN107249227B true CN107249227B (en) | 2020-08-18 |
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| CN113597037B (en) * | 2021-07-30 | 2023-05-23 | 重庆长安新能源汽车科技有限公司 | High homogeneity heating device of motor hot jacket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202276253U (en) * | 2011-10-08 | 2012-06-13 | 宁波菲仕电机技术有限公司 | Intermediate-frequency shrink fit device of servo motor stator |
| CN103170796A (en) * | 2013-04-02 | 2013-06-26 | 哈尔滨电机厂有限责任公司 | Process for heating sleeve shaft through magnetic induction by large ring component |
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