CN115046521A - Method and equipment for detecting clearance of electromagnetic bearing of high-temperature gas cooled reactor - Google Patents
Method and equipment for detecting clearance of electromagnetic bearing of high-temperature gas cooled reactor Download PDFInfo
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a method and equipment for detecting a gap of an electromagnetic bearing of a high-temperature gas cooled reactor, wherein the method comprises the steps of controlling an electronic bearing rotor of the high-temperature gas cooled reactor to suspend in an auxiliary bearing ring through an electromagnet, moving along the axial direction of the auxiliary bearing, measuring a gap value between the rotor and the auxiliary bearing, constructing a linear relation between electromagnet current and the gap between the electromagnetic bearing rotor of the high-temperature gas cooled reactor and the auxiliary bearing, and establishing a mapping table; in the working process of controlling the high-temperature gas-cooled reactor electronic bearing by the same batch of electromagnets, acquiring electromagnet current and the distance between the corresponding high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing in real time, inquiring a clearance value corresponding to the acquired electromagnet current in a mapping table, and judging whether the two values are the same. By the method and the device, the on-site debugging and maintenance time can be greatly shortened, the debugging and maintenance efficiency and the economy are improved, and the operation reliability of the electromagnetic bearing system is improved.
Description
Technical Field
The invention relates to the technical field of nuclear power plant monitoring, in particular to a method, a device, equipment and a storage medium for detecting a gap of an electromagnetic bearing of a high-temperature gas cooled reactor.
Background
The electromagnetic bearing is a novel high-end bearing which is supported by means of electromagnetic force, the bearing is obviously different from the traditional sliding bearing in the working principle, the novel bearing is suspended on a shaft by means of magnetic field force generated by an additional electromagnetic coil and is controlled, non-contact is achieved, and the characteristic of lubrication is not needed. In practical application, the device has the characteristics of small vibration, long service life, simplicity and easiness in maintenance, low maintenance cost, strong adaptability and the like. The research and application of the magnetic bearing at home and abroad have made a great breakthrough and are applied in a plurality of industrial fields.
The high-temperature gas cooled reactor steam generator and the helium main fan adopt an integrated structure, and in order to ensure the purity of a primary loop coolant-helium, an electromagnetic bearing is selected as a supporting and rotating device of the fan to drive the helium to circulate.
The electromagnetic bearing is an active magnetic suspension bearing, and the bearing is suspended through electromagnetic force to realize the rotation between a rotor and an auxiliary bearing without contact and friction. In order to ensure the normal operation of the electromagnetic bearing, the clearance between the rotor and the stator is an important index for the operation of the magnetic bearing. As a mechatronic device, the electromagnetic bearing needs to be tested for electrical characteristics and mechanical structure during debugging and maintenance, wherein gap detection is a main test item. At present, the electromagnetic bearing of the main helium fan lacks a gap automatic detection function and needs to be manually measured. The manual measurement method is time-consuming, low in efficiency and high in cost, and cannot meet the requirement of rapid and accurate detection in the field debugging process.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for detecting a gap of an electromagnetic bearing of a high-temperature gas cooled reactor, and aims to greatly shorten the field debugging and maintenance time, improve the debugging and maintenance efficiency and economy and improve the operation reliability of an electromagnetic bearing system.
Therefore, a first object of the present invention is to provide a method for detecting a clearance of an electromagnetic bearing of a high temperature gas cooled reactor, comprising:
enabling a rotor of a first high-temperature gas-cooled reactor electromagnetic bearing to be suspended at the circle center position of an auxiliary bearing through attraction of an electromagnet, gradually changing the current of the electromagnet, correspondingly measuring the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, establishing a linear relation between the current of the electromagnet and the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, and constructing a mapping table;
during the working process of the high-temperature gas-cooled reactor electromagnetic bearing in the same batch with the first high-temperature gas-cooled reactor electromagnetic bearing, measuring the distance between the real-time high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing, searching a mapping table based on the corresponding real-time electromagnet current, and judging whether the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing corresponding to the real-time electromagnet current in the mapping table is the same as the actually measured distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
The method for measuring the distance between the high-temperature gas cooled reactor electromagnetic bearing rotor and the auxiliary bearing comprises the following steps:
the method comprises the steps that a rotor of the electromagnetic bearing of the high-temperature gas cooled reactor moves along the axial direction of a pair of electromagnets oppositely arranged along any axial direction of an auxiliary bearing by adjusting the current values of the pair of electromagnets;
when the high-temperature gas-cooled reactor electromagnetic bearing rotor moves to one side of the auxiliary bearing along the axial direction, the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the inner wall of the opposite side of the auxiliary bearing is measured through a feeler gauge, and the distance is recorded and used as the gap between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
When the clearance gauge is used for measuring the distance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the inner wall of the auxiliary bearing opposite side, the distance sensor is arranged for measuring the distance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the inner wall of the auxiliary bearing opposite side, the measurement results of the clearance gauge and the distance sensor are compared, and if the measurement results are not consistent, the measurement is carried out again.
When the high-temperature gas cooled reactor electromagnetic bearing rotor is in contact with the auxiliary bearing, the auxiliary bearing is elastically deformed, at the moment, an inflection point appears on an approximate linear curve of current and displacement, and the gap between the electromagnetic bearing rotor and the auxiliary bearing is judged according to the relationship between the current and the displacement.
When bearing clearance needs to be measured, the rotor is enabled to move towards one direction and to be in contact with the auxiliary bearing, through historical data of current and clearance in the direction, if a current inflection point is not calculated, the moving range of the rotor is not enough, the rotor does not contact the auxiliary bearing, and the moving range needs to be properly increased, namely the limit position is expanded until the current inflection point appears; calculating the gap in the direction; moving the rotor in the opposite direction, repeating the above steps, and calculating the gap in the opposite direction; the sum of the forward gap and the reverse gap is the gap value of the electromagnetic bearing in the direction.
The relation between the power amplifier current and the gap in different directions of the auxiliary bearing is analyzed, the inflection point of the current change when the rotor is in contact with the auxiliary bearing and elastically deforms is found, and the numerical relation rule of the current and the gap is found through nonlinear fitting correction.
The method comprises the following steps of establishing a linear relation between electromagnet current and a distance between a high-temperature gas cooled reactor electromagnetic bearing rotor and an auxiliary bearing, and establishing a mapping table, wherein the steps comprise:
the suspension position of the rotor is changed, namely the current of an electromagnet coil is adjusted, the position between the rotor and the auxiliary bearing is determined through a feeler gauge, and the value of a position sensor is observed;
gradually increasing the current, simultaneously recording the power amplifier current I of the corresponding channel, and continuously measuring the actual gap by using a feeler gauge on the rotor rack until the feeler gauge cannot be plugged in;
similarly, the current value is reversely adjusted, and the power amplifier current and the gap are recorded point by point until the rotor is attached to the other side of the auxiliary bearing again and cannot be plugged into the clearance gauge;
and repeating the test for multiple times to obtain the relation among the power amplifier current, the gap and the position sensor when the rotor is at different positions.
The second objective of the present invention is to provide a gap detection device for a high temperature gas cooled reactor electromagnetic bearing, comprising:
the mapping establishing module is used for enabling a rotor of the first high-temperature gas-cooled reactor electromagnetic bearing to be suspended at the circle center position of the auxiliary bearing through attraction of an electromagnet, gradually changing the current of the electromagnet, correspondingly measuring the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, establishing a linear relation between the current of the electromagnet and the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, and establishing a mapping table;
and the clearance detection module is used for measuring the real-time distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing in the working process of the high-temperature gas-cooled reactor electromagnetic bearing in the same batch as the first high-temperature gas-cooled reactor electromagnetic bearing, searching a mapping table based on the corresponding real-time electromagnet current, and judging whether the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing corresponding to the real-time electromagnet current in the mapping table is the same as the actually measured distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
A third object of the present invention is to provide an electronic apparatus, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to enable the at least one processor to perform the steps of the method of the preceding claims.
A fourth object of the present invention is to propose a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the steps of the method according to the aforementioned technical solution.
Different from the prior art, the high temperature gas cooled reactor electromagnetic bearing gap detection method provided by the invention has the advantages that the high temperature gas cooled reactor electronic bearing rotor is controlled by the electromagnet to suspend in the auxiliary bearing ring and move along the axial direction of the auxiliary bearing, the gap value between the rotor and the auxiliary bearing is measured, the linear relation between the electromagnet current and the distance between the high temperature gas cooled reactor electromagnetic bearing rotor and the auxiliary bearing is constructed, and a mapping table is established; in the working process of controlling the high-temperature gas-cooled reactor electronic bearing by the same batch of electromagnets, acquiring electromagnet current and the distance between the corresponding high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing in real time, inquiring a clearance value corresponding to the acquired electromagnet current in a mapping table, and judging whether the two values are the same. By the method, the on-site debugging and maintenance time can be greatly shortened, the debugging and maintenance efficiency and the economy are improved, and the operation reliability of the electromagnetic bearing system is improved.
Drawings
The invention and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a method for detecting a clearance of an electromagnetic bearing of a high temperature gas cooled reactor according to the present invention.
Fig. 2 is a schematic diagram of the working principle of an electromagnetic bearing in the method for detecting the clearance of the electromagnetic bearing in the high-temperature gas-cooled reactor provided by the invention.
Fig. 3 is a schematic diagram of a relationship curve between current and displacement in the method for detecting the clearance of the electromagnetic bearing of the high temperature gas cooled reactor according to the present invention.
Fig. 4 is a schematic diagram of current and clearance measurement in the method for detecting clearance of an electromagnetic bearing of a high temperature gas cooled reactor according to the present invention.
Fig. 5 is a schematic structural diagram of an electromagnetic bearing gap detection device for a high temperature gas cooled reactor according to the present invention.
Fig. 6 is a schematic structural diagram of a non-transitory computer-readable storage medium according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The detection of the gap of the electromagnetic bearing has three main purposes:
1. whether the rotor structure is installed according with the requirements is judged through clearance checking. The problems of loose structure, infirm installation and the like which may exist in the installation are found;
2. the problems that impurities may exist, the auxiliary bearing is damaged or the installation position is not correct are found through clearance inspection;
3. whether the auxiliary bearing is in good condition or not is indirectly verified after the bearing is collided or falls by means of the gap detection result, and therefore the frequency of observing the integrity of the bearing by disassembling and assembling the rotor is reduced. The time required for operation and maintenance is reduced.
As shown in fig. 1, a method for detecting a clearance of an electromagnetic bearing of a high temperature gas cooled reactor according to an embodiment of the present invention includes:
s110: through the attraction of an electromagnet, a rotor of a first high-temperature gas-cooled reactor electromagnetic bearing is suspended at the circle center position of an auxiliary bearing, the current of the electromagnet is gradually changed, the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing is correspondingly measured, the linear relation between the current of the electromagnet and the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing is established, and a mapping table is constructed.
In the step of measuring the distance between the high temperature gas cooled reactor electromagnetic bearing rotor and the auxiliary bearing, the method comprises the following steps:
the method comprises the steps that a rotor of the electromagnetic bearing of the high-temperature gas cooled reactor moves along the axial direction of a pair of electromagnets oppositely arranged along any axial direction of an auxiliary bearing by adjusting the current values of the pair of electromagnets;
when the high-temperature gas-cooled reactor electromagnetic bearing rotor moves to one side of the auxiliary bearing along the axial direction, the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the inner wall of the opposite side of the auxiliary bearing is measured through a feeler gauge, and the distance is recorded and used as the gap between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
When the clearance gauge is used for measuring the distance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the inner wall of the opposite side of the auxiliary bearing, the distance sensor is arranged for measuring the distance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the inner wall of the opposite side of the auxiliary bearing, the measurement results of the clearance gauge and the distance sensor are compared, and if the measurement results are inconsistent, the measurement is carried out again.
As shown in fig. 2, the first electromagnetic bearing rotor is suspended at the center position of the auxiliary bearings by attraction of the electromagnets, and changes its position between the auxiliary bearings depending on the magnitude of the electromagnetic force. Through calculation and analysis, when the rotor is suspended and is not in contact with the auxiliary bearing, the electromagnet control current and the gap variation are approximately in a linear relation. When the first high-temperature gas cooled reactor electromagnetic bearing rotor is in contact with the auxiliary bearing, the auxiliary bearing is elastically deformed, at the moment, an inflection point appears on an approximate linear curve of current and displacement, and the gap between the electromagnetic bearing rotor and the auxiliary bearing is judged according to the relation between the current and the displacement. As shown in fig. 3.
The relation between the power amplifier current and the gap in different directions of the auxiliary bearing is analyzed, the inflection point of the current change when the rotor is in contact with the auxiliary bearing and elastically deforms is found, and the numerical relation rule of the current and the gap is found through nonlinear fitting correction.
As shown in fig. 4, the step of establishing a linear relationship between the electromagnet current and the distance between the high temperature gas cooled reactor electromagnetic bearing rotor and the auxiliary bearing, and constructing a mapping table includes:
the suspension position of the rotor is changed, namely the current of an electromagnet coil is adjusted, the position between the rotor and the auxiliary bearing is determined through a feeler gauge, and the value of a position sensor is observed;
gradually increasing the current, simultaneously recording the power amplifier current I of the corresponding channel, and continuously measuring the actual gap by using a feeler gauge on the rotor rack until the feeler gauge cannot be plugged in;
similarly, the current value is reversely adjusted, and the power amplifier current and the gap are recorded point by point until the rotor is attached to the other side of the auxiliary bearing again and cannot be plugged into the feeler gauge;
and repeating the test for multiple times to obtain the relation among the power amplifier current, the gap and the position sensor when the rotor is at different positions.
S120: during the working process of the high-temperature gas-cooled reactor electromagnetic bearing in the same batch with the first high-temperature gas-cooled reactor electromagnetic bearing, measuring the distance between the real-time high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing, searching a mapping table based on the corresponding real-time electromagnet current, and judging whether the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing corresponding to the real-time electromagnet current in the mapping table is the same as the actually measured distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
When bearing clearance needs to be measured, the rotor is moved to one direction and is in contact with the auxiliary bearing, through historical data of current and clearance in the direction, if a current inflection point is not calculated, the moving range of the rotor is not enough, the rotor does not contact with the auxiliary bearing, and the moving range needs to be properly increased, namely the limit position is expanded until the current inflection point appears; calculating the gap in the direction; moving the rotor in the opposite direction, repeating the above steps, and calculating the gap in the opposite direction; the sum of the forward gap and the reverse gap is the gap value of the electromagnetic bearing in the direction.
As shown in fig. 5, the present invention further provides a gap detection apparatus for an electromagnetic bearing of a high temperature gas cooled reactor, including:
the mapping establishing module 310 is configured to suspend the rotor of the first high temperature gas-cooled reactor electromagnetic bearing at the center of the auxiliary bearing through attraction of the electromagnet, gradually change the magnitude of the electromagnet current, correspondingly measure the distance between the rotor of the high temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, establish a linear relationship between the electromagnet current and the distance between the rotor of the high temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, and construct a mapping table;
the clearance detection module 320 is configured to measure a real-time distance between the rotor of the high temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing during the operation of the high temperature gas-cooled reactor electromagnetic bearing in the same batch as the first high temperature gas-cooled reactor electromagnetic bearing, search a mapping table based on the corresponding real-time electromagnet current, and determine whether the distance between the rotor of the high temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing corresponding to the real-time electromagnet current in the mapping table is the same as an actually measured distance between the rotor of the high temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing.
In order to implement the embodiment, the present invention further provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the steps of the method for detecting the clearance of the electromagnetic bearing of the high temperature gas cooled reactor in the technical scheme.
As shown in fig. 6, the non-transitory computer readable storage medium includes a memory 810 of instructions, an interface 830, the instructions executable by the processor 820 for clearance detection of electromagnetic bearings according to the high temperature gas cooled reactor to perform a method. Alternatively, the storage medium may be a non-transitory computer readable storage medium, for example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
To achieve the embodiments, the present invention further proposes a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the high temperature gas cooled reactor electromagnetic bearing gap detection according to the embodiments of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the described embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
One of ordinary skill in the art will appreciate that all or part of the steps carried by the method implementing the embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The mentioned storage medium may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments described herein without departing from the scope of the invention.
Claims (10)
1. A method for detecting a clearance of an electromagnetic bearing of a high-temperature gas cooled reactor is characterized by comprising the following steps:
enabling a rotor of a first high-temperature gas-cooled reactor electromagnetic bearing to be suspended at the circle center position of an auxiliary bearing through attraction of an electromagnet, gradually changing the current of the electromagnet, correspondingly measuring the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, establishing a linear relation between the current of the electromagnet and the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, and constructing a mapping table;
and in the working process of the high-temperature gas-cooled reactor electromagnetic bearing in the same batch as the first high-temperature gas-cooled reactor electromagnetic bearing, measuring the real-time distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing, searching the mapping table based on the corresponding real-time electromagnet current, and judging whether the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing corresponding to the real-time electromagnet current in the mapping table is the same as the actually measured distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
2. The method for detecting the clearance between the electromagnetic bearing of the high temperature gas cooled reactor according to claim 1, wherein the step of measuring the distance between the rotor of the electromagnetic bearing of the high temperature gas cooled reactor and the auxiliary bearing comprises the following steps:
the high temperature gas cooled reactor electromagnetic bearing rotor moves along the axial direction of the pair of electromagnets by adjusting the current values of the pair of electromagnets oppositely arranged along any axial direction of the auxiliary bearing;
when the high-temperature gas-cooled reactor electromagnetic bearing rotor moves towards one side of the auxiliary bearing along the axial direction, the distance between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the inner wall of the opposite side of the auxiliary bearing is measured through a feeler gauge, and the distance is recorded and used as the gap between the high-temperature gas-cooled reactor electromagnetic bearing rotor and the auxiliary bearing.
3. The method for detecting the clearance between the electromagnetic bearing of the high temperature gas-cooled reactor according to claim 2, wherein when the clearance between the rotor of the electromagnetic bearing of the high temperature gas-cooled reactor and the inner wall of the auxiliary bearing opposite side is measured through the feeler gauge, a distance sensor is arranged to measure the distance between the rotor of the electromagnetic bearing of the high temperature gas-cooled reactor and the inner wall of the auxiliary bearing opposite side, and the measurement results of the feeler gauge and the distance sensor are compared, and if the measurement results are not consistent, the measurement is carried out again.
4. The method for detecting the clearance between the electromagnetic bearing of the high temperature gas cooled reactor according to claim 1, wherein when the rotor of the electromagnetic bearing of the high temperature gas cooled reactor contacts with the auxiliary bearing, the auxiliary bearing is elastically deformed, at this time, an inflection point appears on an approximate linear curve of current and displacement, and the clearance between the rotor of the electromagnetic bearing and the auxiliary bearing is judged according to the relationship between the current and the displacement.
5. The method for detecting the clearance of the electromagnetic bearing of the high-temperature gas cooled reactor according to claim 2, wherein when the bearing clearance needs to be measured, the rotor is moved towards one direction and is in contact with the auxiliary bearing, and through historical data of current and clearance in the direction, if a current inflection point is not calculated, the moving range of the rotor is insufficient, the rotor does not contact the auxiliary bearing, and the moving range needs to be properly increased, namely the limit position is expanded until the current inflection point appears; calculating the gap in the direction; moving the rotor in the opposite direction, repeating the above steps, and calculating the gap in the opposite direction; the sum of the forward gap and the reverse gap is the gap value of the electromagnetic bearing in the direction.
6. The method for detecting the clearance of the electromagnetic bearing of the high-temperature gas cooled reactor according to claim 5, wherein the relationship between the power amplifier current and the clearance in different directions of the auxiliary bearing is analyzed, the inflection point of the current change is found when the rotor is in contact with the auxiliary bearing and elastically deforms, and the numerical relationship rule of the current and the clearance is found through nonlinear fitting correction.
7. The method for detecting the clearance between the electromagnetic bearing of the high temperature gas cooled reactor according to claim 1, wherein the step of establishing a linear relationship between the electromagnet current and the distance between the rotor of the electromagnetic bearing of the high temperature gas cooled reactor and the auxiliary bearing and establishing a mapping table comprises the following steps:
the suspension position of the rotor is changed, namely the current of an electromagnet coil is adjusted, the position between the rotor and the auxiliary bearing is determined through a feeler gauge, and the value of a position sensor is observed;
gradually increasing the current, simultaneously recording the power amplifier current I of the corresponding channel, and continuously measuring the actual gap by using a feeler gauge on the rotor rack until the feeler gauge cannot be plugged in;
similarly, the current value is reversely adjusted, and the power amplifier current and the gap are recorded point by point until the rotor is attached to the other side of the auxiliary bearing again and cannot be plugged into the clearance gauge;
and repeating the test for multiple times to obtain the relation among the power amplifier current, the gap and the position sensor when the rotor is at different positions.
8. A gap detection device for a high-temperature gas cooled reactor electromagnetic bearing is characterized by comprising:
the mapping establishing module is used for enabling a rotor of a first high-temperature gas-cooled reactor electromagnetic bearing to be suspended at the position of the circle center of an auxiliary bearing through attraction of an electromagnet, gradually changing the current of the electromagnet, correspondingly measuring the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, establishing a linear relation between the current of the electromagnet and the distance between the rotor of the high-temperature gas-cooled reactor electromagnetic bearing and the auxiliary bearing, and establishing a mapping table;
and the clearance detection module is used for measuring the real-time clearance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the auxiliary bearing in the working process of the electromagnetic bearing of the high-temperature gas-cooled reactor in the same batch as the first electromagnetic bearing of the high-temperature gas-cooled reactor, searching the mapping table based on the corresponding real-time electromagnet current, and judging whether the real-time clearance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the auxiliary bearing in the mapping table corresponding to the real-time electromagnet current is the same as the real-time clearance between the rotor of the electromagnetic bearing of the high-temperature gas-cooled reactor and the auxiliary bearing.
9. An electronic device, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the steps of the method of any one of claims 1-7.
10. A non-transitory computer readable storage medium having stored thereon computer instructions for causing the computer to perform the steps of the method according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752645.5A CN115046521A (en) | 2022-06-29 | 2022-06-29 | Method and equipment for detecting clearance of electromagnetic bearing of high-temperature gas cooled reactor |
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| CN202210752645.5A CN115046521A (en) | 2022-06-29 | 2022-06-29 | Method and equipment for detecting clearance of electromagnetic bearing of high-temperature gas cooled reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707230A (en) * | 2023-08-03 | 2023-09-05 | 西门子(天津)传动设备有限责任公司 | Rotor offset measuring device, stator offset calculating method, device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707230A (en) * | 2023-08-03 | 2023-09-05 | 西门子(天津)传动设备有限责任公司 | Rotor offset measuring device, stator offset calculating method, device and system |
| CN116707230B (en) * | 2023-08-03 | 2023-12-19 | 西门子(天津)传动设备有限责任公司 | Rotor offset measuring device, stator offset calculating method, device and system |
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