CN114217186A - High-voltage motor insulation detection isolation device - Google Patents
High-voltage motor insulation detection isolation device Download PDFInfo
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- CN114217186A CN114217186A CN202111502967.6A CN202111502967A CN114217186A CN 114217186 A CN114217186 A CN 114217186A CN 202111502967 A CN202111502967 A CN 202111502967A CN 114217186 A CN114217186 A CN 114217186A
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000009413 insulation Methods 0.000 title claims abstract description 25
- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 230000005611 electricity Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 21
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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Abstract
The invention relates to the technical field of high voltage detection, in particular to an insulation detection isolation device for a high voltage motor, which comprises a mounting box and a box cover, wherein the mounting box is a box body, the upper end and the lower end of the mounting box are respectively provided with a mounting groove and a mounting plate, the box cover is horizontally arranged at the upper end of the mounting box through bolts, a power module is arranged in the mounting groove in an inserted manner through a rebound assembly, the power module is connected with an indicator lamp arranged on a movable seat and the power module through a connecting rod, then the indicator lamp is movably controlled under the action of the vertical movement of the power module, so that the indicator lamp retracts into a movable groove to safely protect the movable groove when the equipment is not in use, the power module is blown through a plurality of exhaust holes after the power module is lifted through the inflation and expansion of an expansion ring, the heat dissipation of the power module is accelerated, meanwhile, a one-way valve is driven to be opened along with the lifting of the power module, so that gas containing heat in the equipment can interact with the outside, the service life of the equipment is prolonged, and the power module is damped and buffered when the expansion ring is not in use.
Description
Technical Field
The invention relates to the technical field of high-voltage detection, in particular to an insulation detection isolation device for a high-voltage motor.
Background
The main reasons of the power system fault include insulation damage, so insulation detection needs to be strengthened in some scenes, and taking the insulation detection of a high-voltage motor as an example, the insulation of the motor is reduced due to mechanical abrasion, thermal aging and the like, so that major accidents are caused, and the detection is needed to prevent risks;
in the prior art, the insulation on-line detection of a high-voltage motor is to superpose a direct current 2500V voltage signal between a three-phase alternating current high-voltage bus and a PT neutral point, calculate the insulation resistance of a system by measuring the direct current between the alternating current high-voltage bus and the neutral point, and simultaneously detect the zero sequence current of the system in real time through a zero sequence mutual inductor, thereby realizing the on-line continuous detection of the insulation and the running state of the system, the frequent operation of the insulation test of the motor can cause the serious damage of a grounding knife operating mechanism, a switch trolley in-out mechanism and the like of a switch cabinet, and further cause the failure of the five-prevention function of the switch cabinet, in order to improve the detection safety, an isolation device is arranged to isolate the high-voltage motor from a detection device at high voltage so as to achieve the purposes of autonomous control and enough safety, but the signal indicator lamp of the isolation device is mostly arranged in a convex structure in the use process, the switch power supply module is easy to collide with and damage in the use or transfer process, the isolation device is good in sealing performance, and the switch power supply module can not dissipate heat in time during working, so that the service life of the device is influenced.
Disclosure of Invention
The invention aims to provide an insulation detection isolation device for a high-voltage motor, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an insulation detection isolation device for a high voltage motor, the isolation device comprising:
the mounting box is a box body, the upper end and the lower end of the box body are respectively provided with a mounting groove and a mounting plate, and the box cover is horizontally arranged at the upper end of the mounting box through bolts;
the power supply module is inserted into one side of the mounting groove through the rebound assembly;
the indicating lamp is inserted into the box cover through the movable assembly;
the connecting assembly is arranged at the lower end of the movable assembly and is connected with the power supply module;
the lifting assembly is arranged at the lower end of one side in the mounting groove, and the upper end of the lifting assembly is connected with the lower end of the power supply module;
the check valve runs through the mounting panel setting, and the check valve upper end runs through the lifting subassembly and is connected with the power module lower extreme.
Preferably, one side is equipped with first collar in the mounting groove, is equipped with the second collar in the first collar, and the subassembly that kick-backs includes four guide bars, and the second collar is located to four vertical symmetries respectively of four guide bars, and the power module level cup joints four guide bar settings.
Preferably, the guide rod runs through the power module upper end and all cup joints and is equipped with first spring, and the first spring upper end of guide rod all is equipped with stop nut through threaded connection.
Preferably, the lifting subassembly includes two expansion rings, and four guide bar settings are cup jointed respectively in two expansion rings are pegged graft and are arranged in the second collar respectively, and both sides are equipped with respectively between first collar and the second collar and inflate the box, and two inflation box one side are connected with two expansion rings through communicating pipe respectively, and a plurality of exhaust holes have all evenly been seted up on one side of two expansion rings.
Preferably, the check valve includes the valve rod, and the connection of valve rod upper end is equipped with the stay cord, and stay cord one side is equipped with from spacing couple, and power module lower extreme center is equipped with the pull ring, and from the setting of spacing couple hookup pull ring.
Preferably, the movable assembly comprises a movable seat, a movable groove is vertically formed in one side of the box cover, the movable seat is vertically inserted into the movable groove, a piston ring is sleeved at the upper end of one side of the movable groove, and the outer circumferential surface of the piston ring is in contact with the inner part of the movable groove.
Preferably, the movable seat upper end has been seted up the internal thread groove, has seted up the annular in the internal thread groove and has connect the electricity groove, and the warning light lower extreme is equipped with connects the electricity ring, and the warning light lower extreme is arranged in the internal thread groove through the screw thread grafting, connects the electricity ring grafting and arranges in connecting the electricity groove.
Preferably, coupling assembling includes connecting rod and link, and the connecting rod is vertical to run through the movable groove and to locate sliding seat lower extreme center, and the link passes through bolt suit power module center and sets up, and the link upper end is equipped with the connecting block, and the connecting rod lower extreme pegs graft and arranges in the connecting block.
Preferably, the connecting rod is pegged graft and is arranged in both sides in the connecting block and be equipped with the stopper through locating lever and the grafting of second spring symmetry, and the locating lever setting is cup jointed to the second spring, and the connecting block cup joints the connecting rod bilateral symmetry and has seted up two spacing grooves, and two stopper one sides are pegged graft respectively and are arranged in the spacing inslot, and stopper and spacing inslot both sides face are the inclined plane structure setting.
Preferably, the vertical push groove of having seted up in activity inslot center, pilot lamp lower extreme center is equipped with the ejector pad, and the vertical grafting in upper end is equipped with the push rod in the connecting rod, and the push rod upper end runs through to peg graft and arranges in the push groove and contact with the ejector pad lower extreme, and the push rod is pegged graft and is arranged in the push groove one side and cup jointed and be equipped with the third spring, and two stoppers are pegged graft and are arranged in the connecting rod one side upper end all is equipped with the inclined plane board, and two inclined plane board upper ends contact with push rod lower extreme both sides respectively, and contact one side and be the inclined plane.
Compared with the prior art, the invention has the beneficial effects that:
1. the circuit is switched on and off through an internal vacuum relay, so that the safety of measuring equipment and the power supply safety of a high-voltage motor are achieved, the product has high performance, long service life, no pollution, safety and reliability, the indicator lamp arranged on the movable seat is connected with the power module through the connecting rod, and then the indicator lamp is movably controlled under the action of the vertical movement of the power module, so that the indicator lamp is retracted into the movable groove to perform safety protection on the equipment in a non-use state;
2. the inflation of expansion ring is bloied the power module through a plurality of exhaust vent after with the power module lifting and is handled, with higher speed power module's heat dissipation, simultaneously along with opening of power module's lifting drive check valve, makes the inside thermal gas that contains of equipment can be mutual with the outside, improve equipment life, and carries out the shock attenuation buffering to power module when expansion ring non-use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of portion A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the portion B of FIG. 1 according to the present invention;
FIG. 4 is a schematic view of the portion C of FIG. 2 according to the present invention;
fig. 5 is a perspective view illustrating the appearance of the present invention.
In the figure: the installation box comprises an installation box 1, a box cover 2, an installation groove 3, a power supply module 4, an indicator lamp 5, a one-way valve 6, a guide rod 7, a first spring 8, an expansion ring 9, an inflation box 10, an exhaust hole 11, a valve rod 12, a pull rope 13, a self-limiting hook 14, a movable seat 15, a piston ring 16, an electric connection ring 17, a connecting rod 18, a connecting frame 19, a connecting block 20, a second spring 21, a limiting block 22, a push block 23, a push rod 24 and an inclined plane plate 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an insulation detection isolation device for a high voltage motor: the isolation device comprises:
the installation box 1 and the box cover 2, the installation box 1 is a box body with an installation groove and an installation plate 3 at the upper end and the lower end respectively, a cross high-voltage plug is symmetrically inserted and arranged at one side of the installation box 1, a vacuum relay is arranged in the installation box, the box cover 2 is horizontally arranged at the upper end of the installation box 1 through a bolt, a power module 4 is inserted and arranged at one side in the installation groove 3 through a rebound assembly, a first installation ring is arranged at one side in the installation groove, a second installation ring is arranged in the first installation ring, the rebound assembly comprises four guide rods 7, the four guide rods 7 are respectively vertically and symmetrically arranged in the second installation ring, the power supply module 4 is horizontally sleeved with four guide rods 7, the guide rods 7 are all sleeved with a first spring 8 through the upper end of the power supply module 4, the upper ends of the first springs 8 of the guide rods 7 are respectively provided with a limiting nut through threaded connection, so that the power module 4 is quickly connected, and the lifting assembly is matched for resetting;
the indicating lamp 5 is arranged by inserting the movable assembly into the box cover 2, the movable assembly comprises a movable seat 15, a movable groove is vertically formed in one side of the box cover 2, the movable seat 15 is vertically inserted into the movable groove, a piston ring 16 is sleeved at the upper end of one side of the movable seat 15 inserted into the movable groove, the outer circumferential surface of the piston ring 16 is in contact with the movable groove, an inner thread groove is formed in the upper end of the movable seat 16, an annular electricity receiving groove is formed in the inner thread groove, an electricity receiving ring 17 is arranged at the lower end of the indicating lamp 5, the lower end of the indicating lamp 5 is inserted into the inner thread groove through threads, and the electricity receiving ring 17 is inserted into the electricity receiving groove, so that the indicating lamp 5 is convenient to replace and connect;
the connecting assembly is arranged at the lower end of the movable assembly and is connected with the power module 4, the connecting assembly comprises a connecting rod 18 and a connecting frame 19, the connecting rod 18 vertically penetrates through a movable groove and is arranged at the center of the lower end of the movable seat 15, the connecting frame 19 is arranged at the center of the power module 4 through a bolt in a sleeved mode, the upper end of the connecting frame 19 is provided with a connecting block 20, the lower end of the connecting rod 18 is inserted in the connecting block 20, two sides of the connecting block 20 are symmetrically inserted with limit blocks 22 through a locating rod and a second spring 21, the second spring 21 is sleeved with the locating rod, the connecting block 20 is symmetrically provided with two limit grooves at two sides of the connecting block 18 in a sleeved mode, one sides of the two limit blocks 22 are respectively inserted in the limit grooves, two side surfaces of the limit blocks 22 and two side surfaces in the limit grooves are both arranged in an inclined plane structure, a push groove is vertically arranged at the center in the movable groove 15, and a push block 23 is arranged at the center of the lower end of the indicator lamp 5, a push rod 24 is vertically inserted into the upper end in the connecting rod 18, the upper end of the push rod 24 is inserted into the push groove in a penetrating and inserting mode and is contacted with the lower end of the push block 23, a third spring is sleeved on one side of the push rod 24 inserted into the push groove, the upper ends of two limiting blocks 22 inserted into the connecting rod 18 are provided with inclined plane plates 25, the upper ends of the two inclined plane plates 25 are respectively contacted with two sides of the lower end of the push rod 24, and the contacted side is an inclined plane, so that the reinforced connection is stable;
the lifting assembly is arranged at the lower end of one side in the installation groove, the upper end of the lifting assembly is connected with the lower end of the power module 4, the lifting assembly comprises two expansion rings 9, the two expansion rings 9 are inserted in the second installation ring and are respectively sleeved with four guide rods 7, two sides between the first installation ring and the second installation ring are respectively provided with an inflation box 10, one side of each inflation box 10 is respectively connected with the two expansion rings 9 through a communication pipe, one side of each expansion ring 9 is uniformly provided with a plurality of exhaust holes 11, the air input of each expansion ring 9 is far larger than the air output of each exhaust hole, the one-way valve 6 penetrates through the installation plate 2 and is arranged, the upper end of the one-way valve 6 penetrates through the lifting assembly and is connected with the lower end of the power module 4, the one-way valve 6 comprises a valve rod 12, the upper end of the valve rod 12 is connected with a pull rope 13, one side of the pull rope 13 is provided with a self-limiting hook 14, and the center of the lower end of the power module 4 is provided with a pull ring, and the self-limiting hook 14 is hooked with the pull ring to control the one-way valve 6, air exchange is carried out only when the device is used, the service lives of the power module 4 and the indicator lamp 5 are prolonged, and frequent maintenance is avoided to enable workers to be in danger.
The working principle is as follows: when insulation detection is carried out, a high-voltage line is closed through a vacuum relay, the 2500V high voltage generated by measuring equipment is allowed to pass, the indicator lamp 5 is lightened, the inflation box 10 matured in the prior art inflates the inside of the expansion ring 9, and because the air inflow is larger than the air displacement of the exhaust hole 11, the expansion ring 9 drives the power module 4 and the connecting frame 19 to push the movable seat 15 and the indicator lamp 5 to extend out of the movable groove, so that observation is facilitated, the power module 4 is radiated under the action of the exhaust hole of the expansion ring 9, at the moment, the power module 4 is in a semi-suspension state, the radiating effect is better, the check valve 6 is opened under the action of the pull rope 13, air alternation is carried out inside and outside the device, in addition, the indicator lamp 5 in threaded connection is convenient to replace, the limiting block 22 arranged on the inclined plane facilitates the connection of the connecting rod 18 and the connecting frame 19, when the indicator lamp 5 is in a mounting state, the jacking push rod 24 limits the inclined plane plate 25, and the connection between the reinforcing connecting rod 18 and the connecting frame 19 is stable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an insulating isolating device that detects of high voltage motor which characterized in that: the isolation device comprises:
the mounting box comprises a mounting box (1) and a box cover (2), wherein the mounting box (1) is a box body of which the upper end and the lower end are respectively provided with a mounting groove and a mounting plate (3), and the box cover (2) is horizontally arranged at the upper end of the mounting box (1) through bolts;
the power module (4) is inserted into one side of the mounting groove (3) through the rebound assembly;
the indicating lamp (5) is inserted into the box cover (2) through the movable assembly;
the connecting assembly is arranged at the lower end of the movable assembly and is connected with the power module (4);
the lifting assembly is arranged at the lower end of one side in the mounting groove, and the upper end of the lifting assembly is connected with the lower end of the power module (4);
check valve (6), check valve (6) run through mounting panel (2) and set up, and check valve (6) upper end runs through the lifting subassembly and is connected with power module (4) lower extreme.
2. The high-voltage motor insulation detection isolation device of claim 1, wherein: one side is equipped with first collar in the mounting groove, is equipped with the second collar in the first collar, and the subassembly of kick-backing includes four guide bars (7), and in the second collar was located to vertical symmetry respectively in four guide bars (7), and power module (4) level cup joints four guide bars (7) and sets up.
3. The high-voltage motor insulation detection isolation device of claim 2, wherein: the guide rod (7) penetrates through the upper end of the power module (4) and is provided with a first spring (8) in a sleeved mode, and the upper end of the first spring (8) of the guide rod (7) is provided with a limiting nut through threaded connection.
4. The high-voltage motor insulation detection isolation device of claim 3, wherein: the lifting assembly comprises two expansion rings (9), the two expansion rings (9) are connected in an inserting mode and are arranged in the second mounting ring to be respectively sleeved with four guide rods (7), the two sides between the first mounting ring and the second mounting ring are respectively provided with an inflation box (10), one side of each inflation box (10) is respectively connected with the two expansion rings (9) through a communicating pipe, and a plurality of exhaust holes (11) are evenly formed in one side of each expansion ring (9).
5. The high-voltage motor insulation detection isolation device of claim 4, wherein: check valve (6) are including valve rod (12), and valve rod (12) upper end is connected and is equipped with stay cord (13), and stay cord (13) one side is equipped with from spacing couple (14), and power module (4) lower extreme center is equipped with the pull ring, and from spacing couple (14) hookup pull ring setting.
6. The high-voltage motor insulation detection isolation device of claim 5, wherein: the movable assembly comprises a movable seat (15), a movable groove is vertically formed in one side of the box cover (2), the movable seat (15) is vertically inserted into the movable groove, a piston ring (16) is sleeved at the upper end of one side of the movable groove in which the movable seat (15) is inserted, and the outer circumferential surface of the piston ring (16) is in contact with the movable groove.
7. The high-voltage motor insulation detection isolation device of claim 6, wherein: an inner thread groove is formed in the upper end of the movable seat (16), an annular electricity receiving groove is formed in the inner thread groove, an electricity receiving ring (17) is arranged at the lower end of the prompting lamp (5), the lower end of the prompting lamp (5) is inserted into the inner thread groove through threads, and the electricity receiving ring (17) is inserted into the electricity receiving groove.
8. The high-voltage motor insulation detection isolation device of claim 7, wherein: coupling assembling includes connecting rod (18) and link (19), and the movable seat (15) lower extreme center is located to the vertical activity groove that runs through of connecting rod (18), and link (19) are through bolt suit power module (4) center setting, and link (19) upper end is equipped with connecting block (20), and connecting rod (18) lower extreme is pegged graft and is arranged in connecting block (20).
9. The high-voltage motor insulation detection isolation device of claim 8, wherein: connecting rod (18) are pegged graft and are arranged in connecting block (20) both sides through locating lever and second spring (21) symmetry grafting and be equipped with stopper (22), and second spring (21) cup joint the locating lever setting, and connecting block (20) cup joint connecting rod (18) bilateral symmetry and have seted up two spacing grooves, and two stopper (22) one side are pegged graft respectively and are arranged in the spacing inslot, and stopper (22) and spacing inslot both sides face are the inclined plane structure setting.
10. The high-voltage motor insulation detection isolation device of claim 9, wherein: the vertical groove that pushes away of having seted up in activity groove (15) center, pilot lamp (5) lower extreme center is equipped with ejector pad (23), the vertical grafting of upper end is equipped with push rod (24) in connecting rod (18), push rod (24) upper end is run through to peg graft and is arranged in the push away inslot and contact with ejector pad (23) lower extreme, push rod (24) are pegged graft and are arranged in push away inslot one side and cup joint and be equipped with the third spring, one side upper end all is equipped with inclined plane board (25) in connecting rod (18) is arranged in two stopper (22) pegs graft, two inclined plane board (25) upper ends contact with push rod (24) lower extreme both sides respectively, and contact one side and be the inclined plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502967.6A CN114217186B (en) | 2021-12-10 | 2021-12-10 | High-voltage motor insulation detection isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502967.6A CN114217186B (en) | 2021-12-10 | 2021-12-10 | High-voltage motor insulation detection isolation device |
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| CN114217186A true CN114217186A (en) | 2022-03-22 |
| CN114217186B CN114217186B (en) | 2024-03-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455408A (en) * | 2015-08-05 | 2017-02-22 | 中兴通讯股份有限公司 | Heat radiating device |
| CN207396645U (en) * | 2017-09-07 | 2018-05-22 | 李江 | A kind of Electronics and Information Engineering testing agency |
| CN209215563U (en) * | 2018-11-06 | 2019-08-06 | 天津金吉利自动化技术有限公司 | A kind of power supply test case |
| CN110190227A (en) * | 2019-06-17 | 2019-08-30 | 上海依呗科技有限公司 | A kind of Portable DC system battery group having self-test capability |
| CN213337869U (en) * | 2020-05-15 | 2021-06-01 | 山东威纳电气有限公司 | High-voltage isolation device for insulation monitoring of high-voltage motor |
-
2021
- 2021-12-10 CN CN202111502967.6A patent/CN114217186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455408A (en) * | 2015-08-05 | 2017-02-22 | 中兴通讯股份有限公司 | Heat radiating device |
| CN207396645U (en) * | 2017-09-07 | 2018-05-22 | 李江 | A kind of Electronics and Information Engineering testing agency |
| CN209215563U (en) * | 2018-11-06 | 2019-08-06 | 天津金吉利自动化技术有限公司 | A kind of power supply test case |
| CN110190227A (en) * | 2019-06-17 | 2019-08-30 | 上海依呗科技有限公司 | A kind of Portable DC system battery group having self-test capability |
| CN213337869U (en) * | 2020-05-15 | 2021-06-01 | 山东威纳电气有限公司 | High-voltage isolation device for insulation monitoring of high-voltage motor |
Non-Patent Citations (1)
| Title |
|---|
| 孙江波;潘国峰;: "高压绝缘在线监控仪在高压电机运行中的应用", 神华科技, no. 05, 21 May 2018 (2018-05-21), pages 52 - 54 * |
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| CN114217186B (en) | 2024-03-15 |
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