CN114121547A - Arc extinction device and power generation system - Google Patents
Arc extinction device and power generation system Download PDFInfo
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- CN114121547A CN114121547A CN202111338915.XA CN202111338915A CN114121547A CN 114121547 A CN114121547 A CN 114121547A CN 202111338915 A CN202111338915 A CN 202111338915A CN 114121547 A CN114121547 A CN 114121547A
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- circuit breaker
- vacuum circuit
- generator
- button
- connecting line
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- 238000010248 power generation Methods 0.000 title claims abstract description 13
- 230000008033 biological extinction Effects 0.000 title claims description 27
- 238000004146 energy storage Methods 0.000 claims description 48
- 230000003068 static effect Effects 0.000 claims description 18
- 230000001960 triggered effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 12
- 239000001257 hydrogen Substances 0.000 abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004880 explosion Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 17
- 230000007246 mechanism Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 230000001629 suppression Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/34—Turning or inching gear
- F01D25/36—Turning or inching gear using electric motors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to an arc extinguishing device and power generation system, wherein, the arc extinguishing device can be through the first connecting wire of setting up the vacuum circuit breaker switch-on connection generator in the arc extinguishing device and the second connecting wire of being connected with ground, in order to introduce ground with the induced voltage that the generator produced when the barring operation, and simultaneously, because the insulating medium in contact clearance all is the high vacuum behind vacuum circuit breaker's the arc extinguishing medium and the arc extinguishing, so the electric arc that produces in the twinkling of an eye of first connecting wire and second connecting wire switch-on is in the environment of a high vacuum, can't propagate to the generator, also this electric arc can not burn the generator, and simultaneously, can not also appear the problem of hydrogen explosion because electric arc and hydrogen react.
Description
Technical Field
The application relates to the technical field of power generation, in particular to an arc extinction device and a power generation system.
Background
The TA1800-83S type generator (hereinafter referred to as the generator) needs to be shut down and overhauled after being used for a period of time, but because the generator and the steam turbine can generate a large amount of heat in the using process, the heat can weaken the metal strength of the rotors of the generator and the steam turbine to cause deformation and bending, the generator needs a long time to be cooled by adopting a water-hydrogen cooling (namely, stator winding water is cooled, and a stator iron core and the rotors adopt hydrogen for cooling), if the rotor of the generator and the rotor of the steam turbine stop rotating under the condition that the rotor of the generator and the rotor of the steam turbine are not cooled, the rotor of the generator and the rotor of the steam turbine can deform due to untimely heat dissipation, and once the deformation of the rotors of the generator and the steam turbine exceeds the standard, the rotors of the generator and the steam turbine can generate high vibration faults, and the rotors cannot be used. In order to solve the problem, after the generator set is stopped, the generator and the turbine rotor are slowly rotated through turning operation, and the generator and the turbine are cooled under the condition that the shapes of the generator and the turbine rotor are maintained. However, since the turning operation requires a long time and the gas in the generator chamber is not replaced, the worker may perform the maintenance operation of the generator during the turning operation in order to improve the efficiency of the operation. Because the generator can produce induced voltage at the rotation in-process, this induced voltage can threaten staff's personal safety, so overhaul the operation at the in-process of generator barring to the generator, need introduce ground with the induced voltage of generator, guarantee the safety of generator maintenance process.
The current method for introducing the induced voltage of the generator into the ground is to connect a ground wire to the outgoing line flexible connection of the generator, and the specific operation process is as follows: one end of the ground wire is grounded, the other end of the ground wire is directly hung on a bus flexible connection or a sealed bus of the generator, and the induction voltage of the generator is introduced to the ground through the ground wire.
However, the above method may generate an arc discharge phenomenon during the operation, and may cause a risk of burning the generator, and may also cause a risk of hydrogen explosion.
Disclosure of Invention
The application provides an arc extinguishing device and power generation system can avoid producing the electric arc and burning the generator and arousing the risk of hydrogen explosion at the in-process that introduces ground with the induced voltage of generator.
In a first aspect, an arc suppression apparatus is provided, including: a first connecting line, a second connecting line and a vacuum circuit breaker,
and an arc extinguishing device for introducing an induced voltage of the generator, which is a voltage generated when the turning operation is performed on the generator, into the ground through the first connection line in a case where the first connection line and the second connection line are connected through the vacuum circuit breaker.
In one embodiment, the device further comprises a shell, a closing button is arranged on the shell,
and the closing button is used for closing the vacuum circuit breaker to connect the first connecting line and the second connecting line under the condition of being triggered.
In one embodiment, the closing button is specifically configured to switch on a power supply of a closing electromagnet of the vacuum circuit breaker, so that the closing electromagnet pushes a conductive rod of the vacuum circuit breaker to move to close the vacuum circuit breaker.
In one embodiment, the closing button is specifically used for attracting a moving contact of the vacuum circuit breaker and a fixed contact of the vacuum circuit breaker to close the vacuum circuit breaker when a conductive rod of the vacuum circuit breaker moves.
In one embodiment, the casing is further provided with a switching-off button, and the switching-off button is used for switching off the vacuum circuit breaker to disconnect the first connecting line and the second connecting line under the condition of being triggered.
In one embodiment, the opening button is used for connecting the power supply of the opening electromagnet of the vacuum circuit breaker so as to open the vacuum circuit breaker by the joint action of the contact pressure spring of the vacuum circuit breaker and the opening spring of the vacuum circuit breaker pushed by the opening electromagnet.
In one embodiment, the opening button is specifically configured to separate a moving contact of the vacuum circuit breaker from a stationary contact of the vacuum circuit breaker to open the vacuum circuit breaker when a contact pressure spring of the vacuum circuit breaker and an opening spring of the vacuum circuit breaker act together.
In one embodiment, the housing is further provided with an energy storage button, and the energy storage button is used for switching on a power supply of an energy storage motor of the vacuum circuit breaker under the condition of being triggered, and pulling up a closing spring of the vacuum circuit breaker to a preset position through rotation of the energy storage motor so as to store energy for the vacuum circuit breaker.
In one embodiment, the shell is further provided with a first connecting part and a second connecting part,
the first connecting wire is connected with a static conducting rod of the vacuum circuit breaker through a first connecting part;
the second connecting wire is connected with the movable conducting rod of the vacuum circuit breaker through a second connecting part.
In one embodiment, a first end of the first connecting wire is hung on any one outlet flexible connection of the generator, and a second end of the first connecting wire is connected with a static conductive rod of the vacuum circuit breaker through a first connecting part.
In one embodiment, a first end of the first connecting wire is hung on a sealing bus of the generator, and a second end of the first connecting wire is connected with a static conductive rod of the vacuum circuit breaker through a first connecting part.
In one embodiment, the housing is further provided with an indicator light for indicating the vacuum switch to connect the first connecting line and the second connecting line.
In a second aspect, there is provided a power generation system comprising the arc extinction device of any one of claims 1 to 12, a power generator and a power supply, the power generator and the power supply being respectively connected to the arc extinction device;
and the arc extinction device is used for introducing the induced voltage of the generator into the ground when the power supply is switched on, wherein the induced voltage is the voltage generated when the generator is turned on.
In one embodiment, the system further comprises: a steam turbine and a turning gear motor,
and the turning motor is used for driving the steam turbine to rotate, and turning operation is carried out on the generator through the rotation of the steam turbine.
The utility model provides an arc extinguishing device and power generation system, wherein, the arc extinguishing device can be through the second connecting wire that sets up the first connecting wire of connecting the generator and being connected with ground of vacuum circuit breaker switch-on in the arc extinguishing device, introduce ground with the induced voltage that the generator produced when barring operation, and simultaneously, because the insulating medium in vacuum circuit breaker's arc extinguishing medium and arc extinguishing back contact gap all is the high vacuum, so the electric arc that produces in the twinkling of an eye of first connecting wire and second connecting wire switch-on is in the environment of a high vacuum, can't propagate to the generator, also this electric arc can not burn the generator, and simultaneously, can not also appear the problem of hydrogen explosion because of electric arc and hydrogen reaction.
Drawings
FIG. 1 is a schematic diagram of an arc suppression device according to an embodiment;
FIG. 2 is a schematic structural view of an arc extinguishing device in another embodiment;
FIG. 3 is a schematic structural view of an arc extinguishing device in another embodiment;
FIG. 4 is a schematic structural diagram of an outlet bin of a generator according to an embodiment;
FIG. 5 is a schematic diagram of a power generation system according to an embodiment.
Description of reference numerals:
1000. a power generation system; 100. an arc extinction device; 101. a first connecting line; 102. a second connecting line; 103. a vacuum circuit breaker; 104. a closing button; 105. a brake separating button; 106. an energy storage button; 107. an indicator light; 200. a generator; 201. the outgoing line is in flexible connection; 202. sealing the mother bus; 300. a barring motor; 400. a steam turbine; 500. a first power supply; 600. a second power supply.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Because the TA1800-83S type generator (hereinafter referred to as the generator for short) can generate induced voltage in the turning process, a worker overhauls the generator in the turning process of the generator and needs to introduce the induced voltage of the generator to the ground so as to ensure personal safety in the overhauling process of the worker. The existing method for introducing the induced voltage of the generator into the ground is to connect a ground wire on the generator in a hanging mode, and the induced voltage of the generator is introduced into the ground through the ground wire.
As shown in fig. 1, the arc extinction device 100 provided by the present application has a schematic structural view, which can solve the above problems, specifically: the arc extinction device 100 includes a first connection line 101, a second connection line 102, and a vacuum circuit breaker 103.
The first connection line 101 may be formed by a plurality of strands of copper wires, and the second connection line 102 may be the same as the first connection line 101, and have the same material, the same diameter, the same length, and the like; the connecting wire can also be made of the same material, have different diameters, have different lengths and the like, and the application is not limited, and the connecting wire can be selected according to actual requirements.
The first connection line 101 is used to connect the generator 200 to the vacuum circuit breaker 103 of the arc extinguishing device 100, and to introduce the induced voltage of the generator 200 to the vacuum circuit breaker 103 of the arc extinguishing device 100. The first connecting line 101 may be connected to a flexible connection provided on the outlet bin of the generator 200 through a first end, and connected to the vacuum circuit breaker 103 of the arc extinguishing device 100 through a second end; the first end of the arc extinguishing device may be connected to a sealed bus bar 202 of the generator 200, and the second end of the arc extinguishing device may be connected to the vacuum circuit breaker 103 of the arc extinguishing device 100. The first end of the first connection line 101 may be electrically connected to the generator 200, or may be hooked. When the first connection line 101 is hung on the generator 200, a hanging joint is provided at a first end of the first connection line 101, and the first connection line 101 is hung on the generator 200 through the hanging joint. It should be noted that the induced voltage of the generator 200 is a voltage generated when the residual magnetism is cut off the stator coil of the generator 200 when the generator 200 is turned on.
The second connection line 102 is used to connect the arc extinguishing device 100 to the ground, and is connected to the first connection line 101 after the vacuum circuit breaker 103 of the arc extinguishing device 100 is closed, so as to introduce the induced voltage of the generator 200 to the ground.
The arc-extinguishing medium of the vacuum interrupter 103 and the insulating medium of the contact gap after the arc extinction are both high vacuum. The vacuum interrupter 103 includes, for example: the energy storage device comprises an energy storage motor, a gear, an energy storage large shaft, an energy storage connecting lever, a cam, a closing electromagnet, an opening electromagnet, a closing roller, a closing pawl, a four-bar mechanism, a conducting rod, a closing spring, a movable conducting rod, a static conducting rod, a movable contact, a static contact and the like.
Next, the operation of the vacuum circuit breaker 103 will be described:
the operation of the vacuum interrupter 103 can have the following two modes:
the first method comprises the following steps: the closing button 104 of the vacuum circuit breaker 103 is pressed, the closing electromagnet is powered on, the power energy storage spring and the straightening mechanism on the movable conducting rod push the movable conducting rod to move upwards, the movable contact is attracted to the static contact, closing of the vacuum circuit breaker 103 is completed, the vacuum circuit breaker 103 is powered off after closing, and the mechanical lock catch acts to enable the vacuum circuit breaker 103 to maintain the closing state.
When the vacuum circuit breaker 103 needs to be opened, the opening button 105 of the vacuum circuit breaker 103 is pressed, the mechanical lock catch is opened after the opening electromagnet is electrified, the power energy storage spring on the movable conducting rod stores energy to release elastic force, the movable conducting rod is pulled open through the straightening mechanism, the movable contact is separated from the static contact, and opening is completed.
And the second method comprises the following steps: before the vacuum circuit breaker 103 is closed, energy is stored. The energy storage process comprises the following steps: the energy storage device comprises a rack, a connecting rod, a crank, a.
Then, the power supply of the closing electromagnet is switched on, the closing electromagnet transmits kinetic energy to the energy storage retaining pawl through the link mechanism, the energy storage retaining pawl is separated from the cam after rotating, the closing spring releases elastic force, the cam drives the four-link mechanism to act after obtaining the elastic force, the force is transmitted to the movable conducting rod, the movable conducting rod is pushed to move upwards through the power energy storage spring on the movable conducting rod and the straightening mechanism, the movable contact is attracted on the static contact, closing of the vacuum circuit breaker 103 is completed, and then the primary retaining pawl, the secondary retaining pawl and the movable conducting rod are buckled with each other, so that the vacuum circuit breaker 103 maintains a closing state.
And finally, switching on a power supply of the opening electromagnet, transmitting force to the secondary retaining pawl through the four-bar linkage mechanism, and then rotating the secondary retaining pawl, disassembling the buckling parts of the primary retaining pawl, the secondary retaining pawl and the movable conducting rod, and separating the movable contact from the fixed contact under the combined action of the power energy storage spring and the opening spring to complete opening.
It should be noted that the first operation mode is suitable for the small vacuum circuit breaker 103, the second operation mode is suitable for the large vacuum circuit breaker 103, and the required vacuum circuit breaker 103 can be selected according to the requirement, which is not limited in the present application.
The application provides an arc extinguishing device 100, arc extinguishing device 100 can put through the first connecting wire 101 of connecting generator 200 and the second connecting wire 102 of being connected with ground through the vacuum circuit breaker 103 that sets up in arc extinguishing device 100, in order to introduce the induced voltage that generator 200 produced when the barring operation into ground, and simultaneously, because the arc extinguishing medium of vacuum circuit breaker 103 and the insulating medium in contact clearance after the arc extinction all are the high vacuum, so the electric arc that produces in the twinkling of an eye of first connecting wire 101 with the switch-on of second connecting wire 102 is in the environment of a high vacuum, can't propagate on generator 200, also this electric arc can not burn generator 200, and simultaneously, also can not appear the problem of hydrogen explosion because of electric arc and hydrogen reaction.
In one embodiment, as shown in fig. 2, the arc suppression device 100 includes a housing, which may be in a shape of a triangle or a rectangle, a rectangular parallelepiped, or a cylinder, and the present application is not limited thereto. The shell can be made of insulating materials. The size of the housing is larger than that of the vacuum circuit breaker 103 to accommodate the vacuum circuit breaker 103 in the accommodating chamber of the housing.
Optionally, the closing button 104 is specifically configured to switch on a power supply of a closing electromagnet of the vacuum circuit breaker 103, so as to push a conductive rod of the vacuum circuit breaker 103 to move by the closing electromagnet to close the vacuum circuit breaker 103.
Optionally, the closing button 104 is specifically configured to, when the conductive rod of the vacuum circuit breaker 103 moves, pull the moving contact of the vacuum circuit breaker 103 and the fixed contact of the vacuum circuit breaker 103 together to close the vacuum circuit breaker 103.
The bottom of casing still is provided with the universal wheel, and the quantity of universal wheel can be one, two, three etc. sets up the universal wheel in the bottom of arc extinction device 100, can make things convenient for arc extinction device 100's removal, increases the convenience that arc extinction device 100 used.
The top surface of the shell is an operation surface, a closing button 104 is arranged on the operation surface, when a worker presses the closing button 104, a power supply of a closing electromagnet in the vacuum circuit breaker 103 is switched on, a power energy storage spring on a movable conducting rod stores energy, the power energy storage spring on the movable conducting rod and a straightening mechanism push the movable conducting rod to move upwards, a movable contact is attracted on a static contact, closing of the vacuum circuit breaker 103 is completed, the vacuum circuit breaker 103 is powered off after closing, and a mechanical lock catch acts to enable the vacuum circuit breaker 103 to maintain a closing state.
The application provides an arc extinguishing device 100 is provided with closing button 104 in arc extinguishing device 100, and the staff of being convenient for only need press closing button 104 and can realize the closing of vacuum circuit breaker 103 when needing to carry out the closing operation to vacuum circuit breaker 103, convenient operation, vacuum circuit breaker 103's sound is fast, completion vacuum circuit breaker 103's that can be quick closing operation.
In an embodiment, as shown in fig. 2, an opening button 105 is further disposed on the housing of the arc extinction device 100, the opening button 105 may be disposed on the same operation surface as the closing button 104 or on a different operation surface from the closing button 104, the opening button 105 and the closing button 104 may be distinguished by disposing different shapes or by disposing different colors, and the like, which is not limited in the present application.
Optionally, a tripping button 105 for switching on the power supply of the tripping electromagnet of the vacuum circuit breaker 103 to trip the vacuum circuit breaker 103 by the combined action of the contact pressure spring of the vacuum circuit breaker 103 pushed by the tripping electromagnet and the tripping spring of the vacuum circuit breaker 103.
Optionally, the opening button 105 is specifically configured to separate a moving contact of the vacuum circuit breaker 103 from a stationary contact of the vacuum circuit breaker 103 to open the vacuum circuit breaker 103 when a contact pressure spring of the vacuum circuit breaker 103 and an opening spring of the vacuum circuit breaker 103 act together.
The opening button 105 is, as the name implies, a button for opening the vacuum circuit breaker 103. The operator can perform the opening operation of the vacuum circuit breaker 103 only by pressing the opening button 105 when necessary. When a worker presses the opening button 105, the opening electromagnet is electrified, the mechanical lock catch is opened, the power energy storage spring on the movable conducting rod stores energy to release elastic force, the movable conducting rod is pulled open through the straightening mechanism, the movable contact is separated from the static contact, and opening is finished.
The application provides an arc extinguishing device 100 is provided with separating brake button 105 in arc extinguishing device 100, and the staff of being convenient for only need press separating brake button 105 can realize the separating brake of vacuum circuit breaker 103 when needing to carry out the separating brake operation to vacuum circuit breaker 103, convenient operation, vacuum circuit breaker 103 makes a sound fast, completion vacuum circuit breaker 103's separating brake operation that can be quick.
In an embodiment, as shown in fig. 3, an energy storage button 106 is further disposed on the housing of the arc extinction device 100, the energy storage button 106 may be disposed on the same operation surface as the opening button 105 and the closing button 104, or may be disposed on a different operation surface from the opening button 105 and the closing button 104, the energy storage button 106, the opening button 105, and the closing button 104 may be distinguished by disposing different shapes, may also be distinguished by disposing different colors, and the like, which is not limited in the present application.
When the vacuum circuit breaker 103 needs energy storage, a worker presses the energy storage button 106, the energy storage button 106 is triggered, the power supply of the energy storage motor is switched on, the output shaft of the energy storage motor is meshed with the first pinion, the first pinion drives the large gear, the energy storage large shaft, the energy storage connecting lever and the cam to synchronously rotate through the second pinion, the closing spring is pulled to the highest point, at the moment, the closing roller on the loading energy storage large shaft is locked by the closing pawl, the energy storage indicating touch plate indicates that energy is stored, the connecting rod on the crank drives the bent plate to press the microswitch, the power supply of the energy storage motor is cut off, and accordingly, energy storage is completed. It should be noted that the energy storage button 106 and the closing button 104 may be the same button, and the button may implement energy storage or closing. Then, when the user uses the small vacuum circuit breaker 103, only the closing button 104 may be provided, and the energy storage button 106 is not required, which is not limited in this application.
The application provides an arc extinguishing device 100 is provided with energy storage button 106 in arc extinguishing device 100, and the staff of being convenient for only need press energy storage button 106 can realize the energy storage of vacuum circuit breaker 103 when needing to carry out the energy storage operation to vacuum circuit breaker 103, and convenient operation can accomplish the energy storage for vacuum circuit breaker 103 fast.
In one embodiment, as further shown in fig. 2, the housing is further provided with a first connection portion and a second connection portion, and the first connection line 101 is connected with the static conductive rod of the vacuum circuit breaker 103 through the first connection portion; the second connection line 102 is connected to the movable conductive rod of the vacuum circuit breaker 103 via a second connection portion.
The first connecting portion and the second connecting portion may be disposed on the back of the housing, the first connecting portion and the second connecting portion may be two through holes, and the first connecting line 101 and the second connecting line 102 are connected to the inner cavity of the arc extinction device 100 through the through holes, so that the first connecting line 101 and the second connecting line 102 are connected to the vacuum circuit breaker 103, and the first connecting line 101 and the second connecting line 102 are conducted through the vacuum circuit breaker 103.
The first connection portion and the second connection portion may also be connection portions including plug connectors, so that one end of the first connection line 101 may be plugged into the first connection portion, and the first connection portion is connected to the vacuum circuit breaker 103 through a wire, so as to connect the first connection line 101 to the vacuum circuit breaker 103. One end of the second connection line 102 may be plugged into a second connection portion, and the second connection portion may be connected to the vacuum circuit breaker 103 through a wire, thereby connecting the second connection line 102 to the vacuum circuit breaker 103. The first connection portion and the second connection portion may have other implementations, which are not limited in this application.
The position of first connecting portion and second connecting portion can be upper and lower parallel arrangement, also can control parallel arrangement, can also be the interval setting, can also be with first connecting portion setting at the casing back, with the second connecting portion setting in the front of casing, does not prescribe a limit to this application, can set up the position relation of first connecting portion and second connecting portion according to actual demand.
In one embodiment, as shown in fig. 3, a plurality of outlet flexible connections 201 are disposed on the outlet bin of the generator 200, and the first end of the first connection line 101 may be hung on any one of the outlet flexible connections 201, so as to introduce the induced voltage of the generator 200 into the first connection line 101 through the outlet flexible connection 201.
In one embodiment, continuing as shown in fig. 3, the outlet bin of the generator 200 further includes a sealed mother bus 202, which may be configured to hang a first end of the first connection line 101 on the sealed mother bus 202, so as to introduce the induced voltage of the generator 200 into the first connection line 101 through the sealed mother bus 202. It should be noted that the first end of the first connection line 101 may be hung on the outgoing flexible connection 201 of the generator 200, or may be hung on the sealed mother bus 202, and either one of the two may be hung. The sealed bus 202 and the outgoing line flexible connection 201 are both arranged at the bottom of the generator 200 and are close to the ground, so that the hanging operation of workers is facilitated.
In one embodiment, as shown in fig. 2, an indicator light 107 is further disposed on the housing of the arc suppression device 100, and the indicator light 107 may be disposed on the same operation surface as the energy storage button 106, the opening button 105, and the closing button 104, or may be disposed on a different operation surface from the energy storage button 106, the opening button 105, and the closing button 104. The indicator light 107 may be a light that is turned on after the vacuum circuit breaker 103 is closed to indicate that the vacuum circuit breaker 103 is already in a closed state, when a moving contact of the vacuum circuit breaker 103 of the vacuum circuit breaker is attracted to a stationary contact of the vacuum circuit breaker 103; the movable contact of the vacuum circuit breaker 103 of the vacuum circuit breaker can be separated from the fixed contact of the vacuum circuit breaker 103, and the lamp is turned off after the vacuum circuit breaker 103 is opened. The arc extinction device 100 is provided with the indicator lamp 107, so that a worker can conveniently monitor the working state of the arc extinction device 100 in real time, and grasp the operation rhythm of the arc extinction device 100, so as to carry out switching-on or switching-off operation on the vacuum circuit breaker 103 at a proper time.
Next, the power generation system 1000 will be explained as a whole:
as shown in fig. 4, the power generation system 1000 includes the arc extinguishing device 100, the generator 200, the first power supply 500, the second power supply 600, the turbine 400, the turning gear motor 300, and the like.
The arc suppression device 100 is used for introducing an induced voltage of the generator 200 into the ground when the power is turned on, wherein the induced voltage is generated when the generator 200 is turned on.
And a turning motor 300 for driving the turbine 400 to rotate, and performing turning operation on the generator 200 by the rotation of the turbine 400.
Wherein, after generator 200 stopped, switch on first power 500 and barring motor 300, barring motor 300 rotated, and barring motor 300 rotated and then driven steam turbine 400 and rotated, and steam turbine 400 was coaxial with generator 200, so generator 200 also followed the rotation (also, carried out the barring operation to generator 200). The electricity generation can produce induced voltage at the rotation in-process, and the staff wants to overhaul generator 200 at generator 200 barring in-process to improve work efficiency. At this time, the operator presses the energy storage button 106 of the arc extinguishing device 100 to connect the second power supply 600 and the vacuum circuit breaker 103 of the arc extinguishing device 100 to store energy. Then, the first end of the first connection line 101 is connected with the flexible connection or the sealed bus 202 on the outlet bin of the generator 200, the second end of the first connection line 101 is connected to the first connection part of the arc extinction device 100 in an inserting manner, the first end of the second connection line 102 is connected to the second connection part of the arc extinction device 100 in an inserting manner, the second end of the second connection line 102 is grounded, the closing button 104 on the arc extinction device 100 is pressed, the moving contact and the static contact in the vacuum circuit breaker 103 are attracted, and the vacuum circuit breaker 103 is closed. The induced voltage on the generator 200 introduces the second connecting line 102, the first connecting line 101 is connected with the second connecting line 102 after the vacuum circuit breaker 103 is switched on, at the moment, an arc discharge phenomenon can be generated, electric arcs are generated on a moving contact and a static contact of the vacuum circuit breaker 103, and because the moving contact and the static contact are in a high-vacuum environment, the electric arcs cannot be transmitted outwards and are cut off in the vacuum circuit breaker 103, so that the generator 200 cannot be damaged, and further the hydrogen leaked from the generator 200 cannot react to generate a hydrogen explosion phenomenon. After the maintenance work is completed by the staff, the opening button 105 arranged on the arc extinguishing device 100 is pressed, the moving contact and the static contact of the vacuum circuit breaker 103 in the attraction state are separated, the vacuum circuit breaker 103 is opened, the first connecting wire 101 is taken down from the generator 200, the connection between the second connecting wire 102 and the ground is disconnected, and the whole operation is completed after all the devices are reset.
It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
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 application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (14)
1. An arc extinguishing device, comprising: a first connecting line, a second connecting line and a vacuum circuit breaker,
the arc extinction device is used for leading the induced voltage of the generator to the ground through the first connecting line under the condition that the first connecting line and the second connecting line are connected through the vacuum circuit breaker; the induced voltage of the generator is a voltage generated when the generator is turned on.
2. The device of claim 1, further comprising a housing having a closing button disposed thereon,
the switching-on button is used for switching on the vacuum circuit breaker to connect the first connecting line and the second connecting line under the condition of being triggered.
3. The device according to claim 2, wherein the closing button is specifically configured to switch on a power supply of a closing electromagnet of the vacuum circuit breaker, so as to close the vacuum circuit breaker by the closing electromagnet pushing a conductive rod of the vacuum circuit breaker to move.
4. The device according to claim 3, wherein the closing button is specifically configured to pull the moving contact of the vacuum circuit breaker and the stationary contact of the vacuum circuit breaker into contact when the conductive rod of the vacuum circuit breaker moves, so as to close the vacuum circuit breaker.
5. The device of claim 1 or 2, wherein the housing is further provided with a switch-off button,
the opening button is used for opening the vacuum circuit breaker to disconnect the first connecting line and the second connecting line under the condition of being triggered.
6. The device as claimed in claim 5, wherein the opening button is used for switching on the power supply of the opening electromagnet of the vacuum circuit breaker so as to open the vacuum circuit breaker by the combined action of the contact pressure spring of the vacuum circuit breaker and the opening spring of the vacuum circuit breaker, which are pushed by the opening electromagnet.
7. The device according to claim 6, wherein the trip button is specifically configured to separate the moving contact of the vacuum circuit breaker from the stationary contact of the vacuum circuit breaker to trip the vacuum circuit breaker when the contact pressure spring of the vacuum circuit breaker and the trip spring of the vacuum circuit breaker act together.
8. The device of claim 2, wherein the housing further comprises a power button disposed thereon,
the energy storage button is used for switching on a power supply of an energy storage motor of the vacuum circuit breaker under the condition of being triggered, and a closing spring of the vacuum circuit breaker is pulled to a preset position through the rotation of the energy storage motor, so that the vacuum circuit breaker stores energy.
9. The device of claim 8, wherein the housing further comprises a first connector and a second connector,
the first connecting wire is connected with a static conductive rod of the vacuum circuit breaker through the first connecting part;
the second connecting wire is connected with the movable conducting rod of the vacuum circuit breaker through the second connecting part.
10. The device of claim 9, wherein a first end of the first connection line is hung on any one of the outlet flexible connections of the generator, and a second end of the first connection line is connected with the static conductive rod of the vacuum circuit breaker through the first connection part.
11. The device of claim 9, wherein a first end of the first connection line is hung on a sealing bus bar of the generator, and a second end of the first connection line is connected with a static conductive rod of the vacuum circuit breaker through the first connection part.
12. The device of claim 8 or 9, wherein an indicator light is further provided on the housing,
the indicating lamp is used for indicating the vacuum circuit breaker to connect the first connecting line and the second connecting line.
13. An electric power generation system, characterized in that it comprises the arc extinction device according to any one of claims 1 to 12, a generator and a power supply, the generator and the power supply being respectively connected to the arc extinction device;
the arc extinction device is used for leading the induced voltage of the generator to the ground when the power supply is switched on, and the induced voltage is the voltage generated when the generator is turned on.
14. The system of claim 13, further comprising: a steam turbine and a turning gear motor,
and the barring motor is used for driving the steam turbine to rotate, and the barring operation is carried out on the generator through the rotation of the steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111338915.XA CN114121547A (en) | 2021-11-12 | 2021-11-12 | Arc extinction device and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111338915.XA CN114121547A (en) | 2021-11-12 | 2021-11-12 | Arc extinction device and power generation system |
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| CN114121547A true CN114121547A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111338915.XA Pending CN114121547A (en) | 2021-11-12 | 2021-11-12 | Arc extinction device and power generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556938U (en) * | 2009-11-27 | 2010-08-18 | 广东自动化电气集团有限公司 | Grounding protection device of neutral point of AC generator |
| CN201985804U (en) * | 2011-01-12 | 2011-09-21 | 李六零 | Electrical braking switch of motor |
| CN204895350U (en) * | 2015-08-24 | 2015-12-23 | 龙岩市海德馨汽车有限公司 | Ground system for supply vehicle |
| CN208986780U (en) * | 2018-11-30 | 2019-06-14 | 王斌 | Generator rotor ground device |
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2021
- 2021-11-12 CN CN202111338915.XA patent/CN114121547A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556938U (en) * | 2009-11-27 | 2010-08-18 | 广东自动化电气集团有限公司 | Grounding protection device of neutral point of AC generator |
| CN201985804U (en) * | 2011-01-12 | 2011-09-21 | 李六零 | Electrical braking switch of motor |
| CN204895350U (en) * | 2015-08-24 | 2015-12-23 | 龙岩市海德馨汽车有限公司 | Ground system for supply vehicle |
| CN208986780U (en) * | 2018-11-30 | 2019-06-14 | 王斌 | Generator rotor ground device |
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