CN100338866C - High-voltage AC motor voltage reducing liquid resistance device with circulation cooling system - Google Patents
High-voltage AC motor voltage reducing liquid resistance device with circulation cooling system Download PDFInfo
- Publication number
- CN100338866C CN100338866C CNB2004100127564A CN200410012756A CN100338866C CN 100338866 C CN100338866 C CN 100338866C CN B2004100127564 A CNB2004100127564 A CN B2004100127564A CN 200410012756 A CN200410012756 A CN 200410012756A CN 100338866 C CN100338866 C CN 100338866C
- Authority
- CN
- China
- Prior art keywords
- cooling system
- high voltage
- liquid
- antihypertensive
- liquid resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 92
- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 230000003276 anti-hypertensive effect Effects 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000000819 phase cycle Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract 4
- 241000555745 Sciuridae Species 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005370 electroosmosis Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/02—Liquid resistors
- H01C10/025—Electrochemical variable resistors
Abstract
The present invention relates to a high voltage AC motor voltage reduction liquid resistor device with a circulation cooling system, which belongs to the technical field of voltage reduction operation control for squirrel cages or synchronous high voltage high power motors. The present invention mainly solves the problems that when liquid resistors are started, boiling phenomena easily occur for the difficulty of heat radiation, the starting performance is abnormal, and the cooling system can not be used in engineering application. The present invention is mainly characterized in that the present invention comprises a casing, at least three electrolyte boxes, conducting liquid, electrode couples and a forced circulation cooling system, wherein the electrolyte boxes which are mutually separated are arranged in the casing, the conducting liquid is arranged in the electrolyte boxes, the electrode couples are arranged in the conducting liquid, and the forced circulation cooling system is composed of a circulation pump, pipelines, a heat exchanger and cooling media; pipeline inlets and pipeline outlets of the circulation cooling system are connected with the electrolyte boxes, one pair of the electrode couples are connected with the high voltage power supply end of a controlled device through electrode arms, and an insulating layer is arranged between the circulation cooling system and the casing. The present invention is mainly used for the starting operation or the voltage and speed regulation operation of squirrel cage or synchronous high voltage AC motors.
Description
Technical field
The present invention relates to a kind of high voltage motor antihypertensive liquid resistance device, particularly a kind of high voltage motor dropping resistor device of the operation of continous-stable in a long time is used for the starting or the variable voltage control operation of high voltage motor.Belong to mouse cage or synchronous high voltage and high power electromotor brownout operation control technology field.
Background technology
Known high voltage motor liquid state soft start device mostly is made of the conductive liquid in electrohydraulic box, the electrohydraulic box, the electrode pair that is in the conductive liquid.Wherein, electrode pair can be two fixed electrodes, also can be, fixed electrode, and moving electrode and set transmission mechanism link.When liquid state soft start device and high voltage motor are used, two kinds of connecting modes are arranged usually.A kind of is to link with the motor rotor loop, both can limit starting current in the starting process, but the starting torque of increasing motor again then belong on the principle and change motor slip ratio control, do not belong to the reduced voltage starting mode of speed regulation, can only be used for wound-rotor motor; Another kind is to link with the motor stator sub-loop, because the liquid resistance string is in the motor stator sub-loop, thereby reduces the terminal voltage of motor stator end, belongs to the step-down mode, is used for mouse cage or synchronous motor.The problem of heat radiation difficulty when there is the liquid resistance starting in the both, starting heats up high continuously, and the latter is because voltage height that starting the time is born and electric current are about three times of motor rated current, need bigger thermal capacity, thereby volume is big, and load is heavier, starting time is long slightly, the phenomenon of boiling very easily occurs, like this, the number of times of starting will be restricted continuously, and because single starting temperature rise is bigger, changed the parameter of liquid resistance, and the heat radiation of the electrohydraulic box of insulation is quite slow, the bigger change of the normal generation of starting performance when starting continuously; In addition, consider, certainly will will increase the volume of electrohydraulic box from safety and stable angle, consider enough design redundancies, finally cause the product cabinet bigger, also can bring thus a series of as manufacturing field, move, problem such as transportation, installation, maintenance, influence applying of product.
Liquid state soft start device connects with the motor rotor loop and belongs to the adjusting of change motor slip ratio, can not change motor stator voltage, do not take place directly to be electrically connected with stator voltage yet, because motor rotor loop induced potential is very low, and only need there be very little operating resistance parallel connection to get final product between the three-phase, between the three-phase and three insulating requirements between relatively all very low, three-phase electricity liquid can circulate together, can not cause dangerous voltage over the ground to produce in the work during conductive liquid circulation cooling, circulation can get final product with general clean water with coolant, the heat exchange of pipeline and circulatory mediator all can not produce dangerous current potential, and safety problem more easily solves.And liquid state soft start device connects with the motor stator sub-loop, belong to step-down class soft starter device, the problem that has stator loop power frequency high voltage, big electric current, engineering use not only may exist because the starting time long, electricity liquid heat up aggravation in addition boil, water spatters phenomenon, the phenomenon that also may have electrode simultaneously and damage because local temperature in short-term is too high.Also be because the reason of high voltage, big electric current, voltage may form creepage by the electric liquid that circulates, coolant, influence device security, and working temperature also free short, the characteristics that heat is big that rise, thereby the solution of slowly failing of the cheap and good-quality type of cooling is fallen.Adopt electric liquid circulation to cool off the mutually insulated that had both related between the three phase supply resistance, also relate to the external safety problem of recycle unit, this is a blank in engineering is used all the time.Be not resolved and use.
Summary of the invention
Purpose of the present invention is exactly the antihypertensive liquid resistance device that a kind of perfect heat-dissipating, safe and reliable, band circulating cooling system that the scope of application is wider are provided at the problems referred to above, is applicable to mouse cage or high voltage motor synchronously.
Technical solution of the present invention is as follows: a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system, comprise housing, be arranged in the housing, at least three electrohydraulic boxes that are separated from each other, the conductive liquid in the electrohydraulic box is in the electrode pair in the conductive liquid.Its feature also comprises: by the forced circulation cooling system that circulating pump, pipeline, heat exchanger, cooler, coolant are formed, the pipeline of this circulating cooling system inlet and pipeline outlet connect with electrohydraulic box.Utmost point in the electrode pair links by the high voltage source end of horn and high voltage motor.Be provided with insulating barrier between circulating cooling system and the housing.
Pipeline inlet described in the technology of the present invention solution and pipeline outlet can be oppositely arranged on the both sides in liquid resistance district between the electrode pair.
The circulating cooling system of the electrohydraulic box that respectively is separated from each other described in the technology of the present invention solution can be separately independently.
The control power supply of each the independent loops cooling system described in the technology of the present invention solution can be directly connects with isolating transformer with phase sequence.
Heat exchanger described in the technology of the present invention solution can be made up of separate conductive liquid passage and coolant guiding channel, and coolant is air or insulating oil.
The pipeline that connects with electrohydraulic box inlet described in the technology of the present invention solution and pipeline outlet can be to insert above electrohydraulic box.
It can also be that side from electrohydraulic box penetrates that the pipeline that connects with electrohydraulic box described in the technology of the present invention solution inlet and pipeline export.
Electrode pair described in the technology of the present invention solution and the conductive liquid between it are formed the antihypertensive liquid resistance, and the antihypertensive liquid resistance is connected with the transmission mechanism that changes its resistance.
The present invention is owing to adopt the liquid resistance device of the high voltage motor step-down of band circulating cooling system, be about to the high voltage source end of a utmost point by horn and high voltage motor in the electrode pair formation reduction voltage loop that links, because the circulation cooling makes the temperature of electric liquid stable within a certain period of time; And owing to can dispel the heat quickly, thereby guaranteed that operating mode needs the stable of starting continuously and runnability, and might satisfy technological requirement within a certain period of time and make the motor brownout operation, thereby can significantly reduce the fail safe that the volume of electrohydraulic box improves electrohydraulic box.
The present invention is because pipeline inlet that will connect with electrohydraulic box and pipeline outlet are oppositely arranged on the both sides in liquid resistance district between the electrode pair, can make the conductive liquid in liquid resistance district comparatively steady in cyclic process, the heat exchanger effectiveness height, little to liquid resistance influence, to not influence of starting performance, the electric liquid of electric liquid loop head, outlet is remained on the same current potential, and security performance improves greatly.
The present invention is owing to be provided with insulating barrier between circulating cooling system and housing, thereby can make housing not charged, avoided the hidden danger of high pressure conductive liquid in the circulation cooling procedure.
Compared with prior art, the present invention has more stable starting performance, and can adopt circulating cooling system, solved the liquid resistance and connect the existing unsafe problems of high voltage source end, the conductive liquid heat radiation and the contradiction of safety have been resolved, and can correspondingly reduce the volume of electrohydraulic box, thereby the entire product volume is reduced, the continuously-running performance strengthens, though load than the restarting overlong time, also can stable operation.Solved engineering use in people want for a long time to solve and open question, thereby reached purpose of the present invention.The present invention is mainly used in mouse cage or the starting or the variable voltage control operation of high voltage motor synchronously.
The present invention is because the electrohydraulic box that respectively is separated from each other adopts separately independently circulating cooling system, thereby can reduce influencing each other between each electrohydraulic box, makes each electrohydraulic box radiating effect better, and is simultaneously also more safe and reliable.
The present invention is because the control power supply of each independent loops cooling system adopts the high voltage isolating transformer power supply with phase sequence, avoided electro-osmosis and possible short circuit phenomenon between each phase voltage to take place, thereby can make each liquid hinder its corresponding circulating cooling system to mate more, synchronously, close look at the swing, thus the safety that guarantees low-voltage control power improves the system safety reliability.
The present invention is owing to adopt separate conductive liquid passage and coolant guiding channel with heat exchanger, thereby can make each phase chiller system not because of conductive liquid and the charged three phase supply power safety that influences of coolant, makes entire product safer.
The present invention since the pipeline that will connect with electrohydraulic box from the side of electrohydraulic box penetrate or above be inserted into the both sides of electrode pair; thereby the electric liquid heat that can make antihypertensive liquid volume resistance service area obtains the circulation cooling as early as possible; and make full use of the thermal capacity of whole electrohydraulic box; electricity liquid in Control work district be because need produce being rapidly heated that a large amount of heats cause during work well, and can protect motor.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is the structural representation that pipeline inserts above electrohydraulic box; Fig. 3 is the structural representation that pipeline penetrates from the electrohydraulic box side; Fig. 4 is the circuit diagram of a kind of main wiring mode of invention; Fig. 5 is the circuit diagram of the another kind of main wiring mode of invention.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3.Electrohydraulic box 21 is three electrohydraulic boxes that are separated from each other, and is arranged in the housing 10. Electrode pair 22,23 is in the conductive liquid 40, and top electrode 22 is a moving electrode, connects the reductor 12 outer reductor guard shields 13 that are provided with transmission mechanism 18, reductor 12 by moving electrode arm 37; Bottom electrode 23 is a fixed electrode, is fixed on the bottom of electrohydraulic box 21 by electrode suppor 24.Diagram is formed the drive system that regulator solution hinders by reductor 12, transmission mechanism 18, guide rail 17, connection row 19 and electrode 22, adopts mode moving, that fixed electrode makes up can play the effect of the electric liquid resistent value of change in initial resistance of the electric liquid of very convenient adjusting or the starting speed regulation process.Transmission mechanism 18 is conventional transmission mechanism, and diagram transmission mechanism 18 adopts screw mandrel and lifting postures, by insulated column with is connected row 19 and the horn 37 back change liquid resistent values that link to each other.Also can adopt other transmission and connected mode, be fixed electrode as two above-mentioned electrodes, with convenient turnover wiring, the mode that adopts a rebound to link to each other with transmission mechanism again in the middle of utilizing changes the liquid resistance, regulate the electrical distance of formation resistance between two fixed electrodes or, reach the purpose of regulating its resistance by the orientation of regulating rebound over against the cross section.Circulating pump 30, heat exchanger 5, two-way valve 29, triple valve 26,28, flowmeter 11, heat outlet 6, hot import 8, pipeline 38 constitute electric fluid circulation.The electric fluid circulation that each electrohydraulic box 21 adopts separately also can adopt same electric fluid circulation.Cooling tower 2, coolant 1, two- way valve 32,35, filter 34, pressure thrust unit 33, Pressure gauge 3, flowmeter 31, cold import 4, cold outlet 7, pipeline 39 constitute cooling systems, coolant adopts air or insulating oil, can make the cost of cooling system minimum and isolate the possible electro-osmosis of thermal medium circulation easily like this, guarantee personal safety.Be provided with insulating barrier 9 between housing 10 and the circulating cooling system, parts such as heat exchanger 5, circulating pump 30 etc. that the circulating cooling system part may be connected with high-tension electricity are installed on the insulating barrier 9, insulating barrier 9 is fixed on the housing 10 in addition, make like this to form sufficient electrical safety distance between housing 10 and the circulating cooling system, guarantee shell safety.The stator 15 of main motor M connects with the arm 36 of drawing of electrode 23.Electrohydraulic box 21 is provided with insulated column 16, and what be used for fixing electrode 23 draws arm 36, and makes easy-to-connect, and horn 37 upper ends are provided with and connect row 19, are used for fixing electrode 22.Be provided with guide rail 17 in the housing 10, transmission mechanism 18 may operate between its restricted portion, and electrohydraulic box 21 tops are provided with level sensor 20 and the liquid temperature detects.Main rotor 14 does not connect with the outside.
Because present embodiment adopts primary connection mode as shown in Figure 5, fixed electrode 23 is linked to each other with main motor stator 15 by horn 36, other three ends and high voltage source U, V, the W three-phase of main motor stator 15 link; Make antihypertensive liquid resistance RS2 be connected on the asterism end of the motor stator of wye connection, thereby make the electrode 22 can be, then with the position that can change electrode 22 after transmission mechanism 18 insulation connect easily by connecting row's 19 short circuits.Fixed electrode 23 is fixed on the bottom of electrohydraulic box 21 through electrode suppor 24 like this, and connects with main motor stator 15 through horn 36.Moving electrode 22 connects with transmission mechanism 18 through horn 37.Fixed electrode 23, moving electrode 22 constitute electrode pair 22,23, and and the 40 formation antihypertensive liquid resistance RS2 of the conductive liquid between it.
Pipeline inlet 25 inserts from electrohydraulic box 21 tops with pipeline outlet 27 as shown in Figure 2, is symmetrically distributed in the both sides in the liquid resistance district that forms between the electrode pair 22,23.Evenly being provided with conductive liquid on the pipeline inlet 25 portals; Evenly be provided with the conductive liquid hand-hole in the pipeline outlet 27.The heat that antihypertensive liquid resistance RS2 forms in starting process is drawn by the pipeline outlet rapidly, circulation line through above-mentioned formation is transported to heat exchanger 5, make thermoelectric liquid in heat exchanger 5, become the coolant pipeline of path to carry out heat exchange rapidly with other, the cooling back is flowed out to loop back by heat outlet 6 and is delivered to pipeline inlet 25, and enter the service area, thereby the electric liquid heat that guarantees antihypertensive liquid resistance RS2 service area is controlled as early as possible.Because the pressure of circulation, being evenly arranged in antihypertensive liquid resistance RS2 service area into and out of pipeline can also make the electric liquid of whole electrohydraulic box obtain effectively stirring, make service area electricity liquid and nonclient area electricity liquid heat obtain well flowing, effectively avoid local temperature rise, also help the electric liquid of import and export simultaneously and be tending towards same current potential, help system safety.Pipeline inlet 25, pipeline outlet 27 adopt insulating material to make.
Different be that pipeline inlet 41 and pipeline outlet 42 penetrate from electrohydraulic box 21 sides among Fig. 3 with shown in Figure 2.Wherein, pipeline inlet 41 tops from electrohydraulic box 21 penetrate, and pipeline outlet 42 middle and lower parts from electrohydraulic box 21 penetrate, and its advantage is to reduce to circulate the draft of forcing pump 30.
A kind of main wiring mode of the present invention as shown in Figure 4.Antihypertensive liquid resistance RS1 is connected between main motor M stator loop and the high voltage source through master switch KM1, QF2, isolating switch QS1, work by switch QF1 during the total head operation, K switch M1, QF2 disconnect and excision antihypertensive liquid resistance equipment, make it to form the liquid resistance device of step-down class high voltage motor step-down.
Another kind of main wiring mode of the present invention as shown in Figure 5.Antihypertensive liquid resistance RS2 can also be connected to the asterism end of main motor M stator loop wye connection, the other end of coil of stator of motor is connected to high voltage source U, V by master switch 1QF, isolating switch QS1, on the W, make it to form the liquid resistance device of step-down class high voltage motor step-down.Antihypertensive liquid resistance RS2 inserts high voltage source by the stator coil of motor, passes through switch 2QF work short circuit asterism during the total head operation, excision antihypertensive liquid resistance equipment.
The control power supply of electric fluid circulation of the present invention can directly be drawn under high voltage source U, V, W, draw isolating switch QS1 lower end as Fig. 4 or 5, Control Circulation pump after isolating transformer TC is transformed to corresponding low voltage control electricity, the electro-osmosis that can not cause because of possible electric liquid circulation is infiltrated by circulation necessary control power supply pollute other low voltage operated control power supply, cause possible hidden danger.
Claims (8)
1, a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system, comprise housing (10), be arranged in the housing (10), at least three electrohydraulic boxes that are separated from each other (21), conductive liquid (40) in the electrohydraulic box (21), be in the electrode pair (22,23) in the conductive liquid (40), it is characterized in that: also comprise the forced circulation cooling system of being made up of circulating pump (30), pipeline (38,39), heat exchanger (5), coolant (1), the pipeline inlet (25,36) and the pipeline outlet (27,42) of this circulating cooling system connect with electrohydraulic box (21); Utmost point (23) in the electrode pair (22,23) links by the high voltage source end (1QF) of horn (36) with high voltage motor; Be provided with insulating barrier (9) between circulating cooling system and the housing (10).
2, a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system according to claim 1, it is characterized in that: described pipeline inlet (25,36) and pipeline outlet (27,42) are oppositely arranged on the both sides in liquid resistance district between the electrode pair (22,23).
3, a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system according to claim 1 and 2, it is characterized in that: the circulating cooling system of the described electrohydraulic box that respectively is separated from each other (21) is separately independently.
4, a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system according to claim 3, it is characterized in that: the control power supply of described each independent loops cooling system isolating transformer (TC) direct and with phase sequence connects.
5, a kind of high voltage motor antihypertensive liquid resistance device according to claim 1 and 2 with circulating cooling system, it is characterized in that: described heat exchanger (5) is made up of separate conductive liquid passage and coolant guiding channel, and coolant (1) is air or insulating oil.
6, a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system according to claim 1 and 2, it is characterized in that: described pipeline inlet (25) that connects with electrohydraulic box (21) and pipeline outlet (27) are to insert above electrohydraulic box (21).
7, a kind of high voltage motor antihypertensive liquid resistance device with circulating cooling system according to claim 1 and 2 is characterized in that: the described pipeline that connects with electrohydraulic box (21) enters the mouth (41) and pipeline to export (42) be that side from electrohydraulic box (21) penetrates.
8, a kind of high voltage motor antihypertensive liquid resistance device according to claim 1 and 2 with circulating cooling system, it is characterized in that: described electrode pair (22,23) and the conductive liquid between it (40) are formed antihypertensive liquid resistance (RS1, RS2), and antihypertensive liquid resistance (RS1, RS2) is connected with the transmission mechanism (18) that changes its resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100127564A CN100338866C (en) | 2004-02-21 | 2004-02-21 | High-voltage AC motor voltage reducing liquid resistance device with circulation cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100127564A CN100338866C (en) | 2004-02-21 | 2004-02-21 | High-voltage AC motor voltage reducing liquid resistance device with circulation cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1658491A CN1658491A (en) | 2005-08-24 |
| CN100338866C true CN100338866C (en) | 2007-09-19 |
Family
ID=35007792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100127564A Expired - Fee Related CN100338866C (en) | 2004-02-21 | 2004-02-21 | High-voltage AC motor voltage reducing liquid resistance device with circulation cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100338866C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397771C (en) * | 2005-12-05 | 2008-06-25 | 何起军 | Starting speed regulator of liquid resistance in use for squirrel cage motor |
| CN101295571B (en) * | 2007-04-24 | 2012-06-06 | 上海追日电气有限公司 | Electrohydraulic box for high voltage liquid resistor |
| CN207282240U (en) * | 2016-07-15 | 2018-04-27 | 绵阳市宏扬科技有限公司 | The water resistance that a kind of industrial self-loopa is flowed and cooled down |
| CN107967972A (en) * | 2017-12-06 | 2018-04-27 | 杨晨光 | Motional resistance device and its application |
| CN110729086B (en) * | 2019-08-26 | 2021-10-08 | 武汉船用机械有限责任公司 | Water resistor with adjustable resistance value |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325049A (en) * | 1978-09-13 | 1982-04-13 | Michel Bensadoun | Electrode for a liquid rheostat, and a liquid rheostat including such an electrode |
| CN85106383A (en) * | 1985-08-24 | 1987-05-20 | 米歇尔·本萨多恩 | Adjustable liquid rheostat with circulating electrolyte |
| CN2181068Y (en) * | 1993-10-21 | 1994-10-26 | 吉林市机电设备厂 | Liguid resistance changer with circular cooling device |
| CN2530393Y (en) * | 2002-02-23 | 2003-01-08 | 湖北追日电气设备有限公司 | Liquid soft starting and speed governer of a.c. motor |
-
2004
- 2004-02-21 CN CNB2004100127564A patent/CN100338866C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325049A (en) * | 1978-09-13 | 1982-04-13 | Michel Bensadoun | Electrode for a liquid rheostat, and a liquid rheostat including such an electrode |
| CN85106383A (en) * | 1985-08-24 | 1987-05-20 | 米歇尔·本萨多恩 | Adjustable liquid rheostat with circulating electrolyte |
| CN2181068Y (en) * | 1993-10-21 | 1994-10-26 | 吉林市机电设备厂 | Liguid resistance changer with circular cooling device |
| CN2530393Y (en) * | 2002-02-23 | 2003-01-08 | 湖北追日电气设备有限公司 | Liquid soft starting and speed governer of a.c. motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1658491A (en) | 2005-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9601925B2 (en) | Stable subsea electric power transmission to run subsea high speed motors | |
| US7567160B2 (en) | Supplementary transformer cooling in a reactive power compensation system | |
| CN102801177B (en) | Method and system for DC power transmission | |
| AU2012309236B2 (en) | Device for stable subsea electric power transmission to run subsea high speed motors or other subsea loads | |
| JP4399770B2 (en) | Superconducting cable operation method and superconducting cable system | |
| JPS63145990A (en) | Coolant circulating system for liquid metal reactor | |
| CN101325117B (en) | Intelligent control method for transformer cooling device based on temperature control and apparatus thereof | |
| CN208400670U (en) | A kind of device for cooling of oil-immersed type transformer | |
| CN103477729A (en) | Power switchgear cabinet of a device for producing electric energy | |
| CN103427601B (en) | Mining medium-high voltage frequency converter cooling back installation | |
| US20110024150A1 (en) | Cooling system and method for current carrying conductor | |
| CN100338866C (en) | High-voltage AC motor voltage reducing liquid resistance device with circulation cooling system | |
| EA023538B1 (en) | Fluid-cooled load resistor for use in energy production and use thereof | |
| CN106653294A (en) | High-voltage self-protection distribution transformer | |
| CN208298665U (en) | Inverter and transformer all-in-one machine | |
| US20150357814A1 (en) | Fault Current Limiter | |
| CN108880200B (en) | Water-cooling and air-cooling combined alternating-current excitation frequency converter | |
| EP3070787B1 (en) | Termination unit for a superconductor network | |
| US20220285070A1 (en) | Static electric induction system and method | |
| CN211857264U (en) | Main transformer air cooling control system | |
| CN2632932Y (en) | Coaxial double motor | |
| CN109672222A (en) | Grid-connected system and method based on two-shipper heat regenerative system with power-balance generator | |
| CN205847078U (en) | Soft initiator with stable-pressure device | |
| CN2749030Y (en) | Cooling system of power transformer | |
| CN2530393Y (en) | Liquid soft starting and speed governer of a.c. motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090213 Address after: No. 36 Nu River Road, Shanghai Patentee after: Zhuiri Electrical Co., Ltd., Shanghai Address before: Hubei city of Xiangfan province high tech Industrial Development Zone, Road No. 1 Patentee before: Zhuiri Electric Appliance Appliance Co., Ltd., Hubei |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ZHUIRI ELECTRIC APPLICANCE CO., LTD. Free format text: FORMER OWNER: HUBEI ZHUIRI ELECTRIC APPLIANCE EQUIPMENT CO., LTD. Effective date: 20090213 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhuiri Electrical Co., Ltd., Shanghai Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhuiri Electrical Co., Ltd., Shanghai Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20180221 |