CN113725034B - Triggering device for gas triggering gap switch - Google Patents
Triggering device for gas triggering gap switch Download PDFInfo
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- CN113725034B CN113725034B CN202110799450.1A CN202110799450A CN113725034B CN 113725034 B CN113725034 B CN 113725034B CN 202110799450 A CN202110799450 A CN 202110799450A CN 113725034 B CN113725034 B CN 113725034B
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- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 12
- 230000001960 triggered effect Effects 0.000 claims description 9
- 230000006978 adaptation Effects 0.000 claims 4
- 239000007789 gas Substances 0.000 description 35
- 210000002381 plasma Anatomy 0.000 description 21
- 238000003825 pressing Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 238000003466 welding Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 239000012212 insulator Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- H01H33/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
Abstract
The invention relates to a triggering device for a gas triggering gap switch, which comprises a ground electrode, a triggering mechanism and a fixing piece, wherein the ground electrode is arranged on the ground electrode; the ground electrode and the fixing piece are jointly enclosed to form a containing cavity, the top end of the ground electrode is provided with an injection hole, the injection hole is communicated with the containing cavity, the triggering mechanism is contained in the containing cavity, the bottom end of the triggering mechanism is provided with a first wire and a second wire, the first wire and the second wire are spaced by a preset distance, and the first wire and the second wire penetrate through the fixing piece and are connected with the external trigger; the trigger mechanism comprises a trigger electrode assembly and a middle electrode assembly, the trigger electrode assembly is inserted into the middle electrode assembly, one end of the first wire, which is away from the external trigger, is connected with the trigger electrode assembly, and one end of the second wire, which is away from the external trigger, is connected with the middle electrode assembly; the triggering mechanism is used for spraying plasma into the gas gap; by the arrangement, the working difficulty coefficient is reduced, and the reliable and long-life triggering of the plasma is realized.
Description
Technical Field
The invention relates to the technical field of gas trigger gap switches, in particular to a trigger device for a gas trigger gap switch.
Background
Currently, gas-triggered gap switch is made of sulfur hexafluoride (SF 6 ) Or sulfur hexafluoride/nitrogen (SF) 6 /N 2 ) The gas is used as an insulating medium, a fast-closing switch for conducting a main gap within 1ms by utilizing a plasma microcavity injection technology, and the gas trigger gap switch can be used in parallel with a circuit breaker, so that the difficult problems of fast control and protection of a power grid are solved.
The working principle of the gas trigger gap switch is that the plasma spraying device releases a large amount of plasmas in the microcavity under the action of high-voltage pulse to trigger the main gap to be conducted. Common plasma triggering techniques based on high voltage pulses include single stage triggering and dual stage triggering.
However, the large trigger energy required for single stage triggering results in a high coefficient of difficulty in operation.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a triggering device for a gas triggering gap switch, which has the advantages of reducing the working difficulty coefficient and realizing the reliable and long-service-life triggering of plasma.
The above object of the present invention is achieved by the following technical solutions: a triggering device for a gas triggering gap switch comprises a ground electrode, a triggering mechanism and a fixing piece; the ground electrode and the fixing piece are enclosed together to form a containing cavity, an injection hole is formed in the top end of the ground electrode, the injection hole is communicated with the containing cavity, the triggering mechanism is contained in the containing cavity, a first wire and a second wire are arranged at the bottom end of the triggering mechanism, the first wire and the second wire are spaced by a preset distance, and the first wire and the second wire are connected with an external trigger through the fixing piece; the trigger mechanism comprises a trigger electrode assembly and a middle electrode assembly, the trigger electrode assembly is inserted into the middle electrode assembly, one end of the first lead, which is away from the external trigger, is connected with the trigger electrode assembly, and one end of the second lead, which is away from the external trigger, is connected with the middle electrode assembly; the trigger mechanism is used to inject plasma into the gas gap.
Preferably, the triggering device for the gas triggering gap switch provided by the invention comprises a triggering electrode and a first insulating piece, wherein the first insulating piece is provided with a mounting hole, the triggering electrode is inserted into the mounting hole, and the outer peripheral wall of the triggering electrode is abutted with the inner peripheral wall of the mounting hole; the top of the first insulating piece is provided with an adjusting hole extending along the central axis direction of the mounting hole, the adjusting hole is communicated with the mounting hole, the top of the trigger electrode is provided with an adjusting part, and the adjusting part is inserted into the adjusting hole.
Preferably, the triggering device for the gas triggering gap switch provided by the invention further comprises a conducting disc, wherein the conducting disc is positioned at the bottom end of the first insulating piece, and the top end of the conducting disc is abutted with the bottom end of the first insulating piece; the utility model discloses a trigger device, including the mounting hole, switch on the disc, the mounting hole is connected to the trigger device, set up on the switch on disc along the through-hole that the axis direction of mounting hole extends, the through-hole with the mounting hole intercommunication, trigger electrode's bottom is provided with the threaded rod, set up in the through-hole with threaded rod assorted internal thread, the threaded rod passes through the through-hole with switch on the disc and be connected, first wire deviate from the one end of external trigger with switch on the disc and be connected.
Preferably, the triggering device for the gas triggering gap switch provided by the invention comprises an intermediate electrode and a second insulating piece, wherein the second insulating piece is provided with a fixing hole extending along the central axis direction of the mounting hole, the intermediate electrode is inserted in the fixing hole, and the outer peripheral wall of the intermediate electrode is abutted with the inner peripheral wall of the fixing hole; the top of second insulating part is seted up along the connecting hole that the axis direction of fixed orifices extends, the connecting hole with the fixed orifices intercommunication, set up on the middle electrode subassembly along the via hole that the axis direction of fixed orifices extends, the connecting hole with the via hole corresponds the setting, just the connecting hole with the via hole intercommunication.
Preferably, the receiving cavity comprises a rotary cavity arranged on the electrode and a receiving groove arranged on the fixing piece, one end of the triggering mechanism is inserted into the rotary cavity, the outer wall of the triggering mechanism is abutted with the inner wall of the rotary cavity, and the other end of the triggering mechanism is inserted into the receiving groove; the injection hole extends along the axis direction of the rotary cavity, and the injection hole is communicated with the rotary cavity.
Preferably, the triggering device for gas triggering gap switch provided by the invention has the advantages that the first insulating piece, the middle electrode and the second insulating piece are all inverted T-shaped.
Preferably, the triggering device for the gas triggering gap switch provided by the invention is characterized in that the fixing piece is cylindrical, the top end of the fixing piece is provided with an air inlet groove extending along the radial direction of the fixing piece, and the air inlet groove is communicated with the accommodating cavity; the air inlet groove is used for flowing outside insulating gas into the accommodating cavity.
Preferably, in the triggering device for gas triggering gap switch provided by the invention, the fixing piece is provided with a plurality of air inlet grooves, and the air inlet grooves are arranged around the circumference of the fixing piece at intervals.
Preferably, in the triggering device for gas triggering gap switch provided by the invention, the bottom end of the fixing piece is provided with the mounting part, the top end of the mounting part is connected with the bottom end of the fixing piece, the mounting part is provided with the first clamping groove matched with the first wire and the second clamping groove matched with the second wire, the first clamping groove and the second clamping groove are all communicated with the mounting part, one end of the first wire extending out of the fixing piece penetrates through the first clamping groove to be connected with the external trigger, and one end of the second wire extending out of the fixing piece penetrates through the second clamping groove to be connected with the external trigger.
Preferably, the triggering device for the gas triggering gap switch further comprises a pressing plate, a first groove matched with the first wire and a second groove matched with the second wire are formed in the pressing plate, the first groove and the second groove penetrate through the pressing plate, the first groove and the first clamping groove are correspondingly arranged, the second groove and the second clamping groove are correspondingly arranged, the pressing plate cover is arranged on one side of the installation portion, the pressing plate is detachably connected with the installation portion, one side, deviating from the first clamping groove, of the first wire is inserted into the first groove, and one side, deviating from the second clamping groove, of the second wire is inserted into the second groove.
In summary, the beneficial technical effects of the invention are as follows: the triggering device for the gas triggering gap switch comprises a ground electrode, a triggering mechanism and a fixing piece; the ground electrode and the fixing piece are jointly enclosed to form a containing cavity, the top end of the ground electrode is provided with an injection hole, the injection hole is communicated with the containing cavity, the triggering mechanism is contained in the containing cavity, the bottom end of the triggering mechanism is provided with a first wire and a second wire, the first wire and the second wire are spaced by a preset distance, and the first wire and the second wire penetrate through the fixing piece and are connected with the external trigger; the trigger mechanism comprises a trigger electrode assembly and a middle electrode assembly, the trigger electrode assembly is inserted into the middle electrode assembly, one end of the first wire, which is away from the external trigger, is connected with the trigger electrode assembly, and one end of the second wire, which is away from the external trigger, is connected with the middle electrode assembly; the triggering mechanism is used for spraying plasma into the gas gap; the trigger electrode assembly is connected with the first lead, the middle electrode assembly is connected with the second lead, the trigger electrode assembly is conveniently connected with the external trigger through the first lead, and the middle electrode assembly is connected with the external trigger through the second lead, so that the working difficulty coefficient is reduced; meanwhile, the triggering mechanism is arranged to spray the plasma into the gas gap, so that the reliable and long-life triggering of the plasma is realized.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a triggering device according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a trigger device provided by an embodiment of the present invention.
Fig. 3 is a schematic structural view of a fixing member in a triggering device according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fixing member in the triggering device according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a pressing plate in the triggering device according to the embodiment of the invention.
In the figure, 1, a trigger device; 10. a ground electrode; 101. an injection hole; 20. a trigger mechanism; 201. triggering an electrode assembly; 2011. a trigger electrode; 2012. a first insulating member; 2013. a primary cavity; 2014. an adjusting part; 2015. a conducting disc; 2016. a through hole; 2017. welding holes; 2018. a threaded rod; 2019. a first flange; 202. an intermediate electrode assembly; 2021. an intermediate electrode; 2022. a second insulating member; 2023. a secondary cavity; 2024. a via hole; 2025. a second flange; 2026. a third flange; 2027. welding holes; 30. a fixing member; 301. a receiving groove; 302. an air inlet groove; 303. a mounting part; 3031. a first clamping groove; 3032. a second clamping groove; 3033. a threaded hole; 304. a first via hole; 305. a second via hole; 306. a fixing groove; 40. a first wire; 50. a second wire; 60. a pressing plate; 601. a first groove; 602. a second groove; 603. bolt holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a triggering device 1 for a gas trigger gap switch according to the present invention includes a ground electrode 10, a triggering mechanism 20, and a fixing member 30; the ground electrode 10 and the fixing piece 30 are enclosed together to form a containing cavity, the triggering mechanism 20 is contained in the containing cavity, a first wire 40 and a second wire 50 are arranged at the bottom end of the triggering mechanism 20, the first wire 40 and the second wire 50 are spaced by a preset distance, and the first wire 40 and the second wire 50 penetrate through the fixing piece 30 and are connected with an external trigger; the trigger mechanism 20 is used to inject plasma into the gas gap; the triggering function of the triggering mechanism 20 is achieved by the first wire 40 and the second wire 50 being connected to an external trigger.
Specifically, the fixing piece 30 is made of insulating materials, the fixing piece 30 is arranged at the bottom end of the ground electrode 10, and the fixing piece 30 is detachably connected with the ground electrode 10; thereby facilitating maintenance of the trigger mechanism 20. The fixing piece 30 and the ground electrode 10 may be connected by a bolt, the fixing piece 30 and the ground electrode 10 may also be connected by a plug, and the fixing piece 30 and the ground electrode 10 may also be connected by a clamping connection, which is not limited in this embodiment.
Further, in this embodiment, the accommodating cavity includes a rotating cavity formed on the ground electrode 10 and an accommodating groove 301 formed on the fixing member 30, one end of the triggering mechanism 20 is inserted into the rotating cavity, the outer wall of the triggering mechanism 20 abuts against the inner wall of the rotating cavity, and the other end of the triggering mechanism 20 is inserted into the accommodating groove 301; the top end of the ground electrode 10 is provided with an injection hole 101 extending along the central axis direction of the rotary cavity, and the injection hole 101 is communicated with the rotary cavity; the plasma injected from the trigger mechanism 20 is injected into the gas gap through the injection hole 101.
With continued reference to fig. 3 and fig. 4, specifically, the fixing member 30 is provided with an accommodating groove 301 extending along the central axis direction of the rotating cavity, the accommodating groove 301 is disposed corresponding to the rotating cavity, the bottom end of the fixing member 30 is provided with a first wire passing hole 304 and a second wire passing hole 305 extending along the central axis direction of the rotating cavity, the first wire passing hole 304 and the second wire passing hole 305 are both communicated with the accommodating groove 301, one end of the first wire 40, which is away from the triggering mechanism 20, passes through the first wire passing hole 304 and is connected with an external trigger, and one end of the second wire 50, which is away from the triggering mechanism 20, passes through the second wire passing hole 305 and is connected with the external trigger.
Further, in this embodiment, the fixing member 30 is cylindrical, and an air inlet groove 302 extending along the radial direction of the fixing member 30 is formed at the top end of the fixing member 30, and the air inlet groove 302 is communicated with the accommodating cavity; the air inlet groove 302 is used for flowing external insulating gas into the accommodating cavity; by providing the air inlet groove 302 on the fixing member 30, the insulating gas enters the accommodating chamber through the air inlet groove 302, thereby enhancing the insulation of the trigger mechanism 20.
For example, the cross-sectional shape of the fixing member 30 may be circular with a plane perpendicular to the central axis of the rotation cavity, and of course, the cross-sectional shape of the fixing member 30 may be rectangular or other polygonal shape. In the realizable mode that the cross-sectional shape of the fixing member 30 is circular, the air inlet groove 302 extends to the accommodating groove 301 along the radial direction of the fixing member 30 from the outer peripheral wall of the fixing member 30, the air inlet groove 302 is communicated with the accommodating cavity, and external insulating gas enters the accommodating cavity through the air inlet groove 302, so that the insulativity of the triggering mechanism 20 is enhanced.
In an alternative embodiment, an air inlet hole is formed in the peripheral wall near the top end of the fixing member 30, the air inlet hole extends to the accommodating groove 301 along the radial direction of the fixing member 30, the air inlet hole communicates with the accommodating groove 301, and the insulating gas enters the accommodating chamber through the air inlet hole.
Further, the fixing member 30 is provided with a plurality of air inlet grooves 302, and the plurality of air inlet grooves 302 are arranged at intervals around the circumference of the fixing member 30; by providing a plurality of air inlet slots 302, the rate at which insulating gas enters the receiving chamber is thereby increased.
With continued reference to fig. 3 and 4, in the present embodiment, three air inlet grooves 302 are formed in the fixing member 30, and the three air inlet grooves 302 are circumferentially spaced around the fixing member 30.
Further, the bottom end of the fixing member 30 is provided with an installation portion 303, the top end of the installation portion 303 is connected with the bottom end of the fixing member 30, a first clamping groove 3031 matched with the first wire 40 and a second clamping groove 3032 matched with the second wire 50 are formed in the installation portion 303, the first clamping groove 3031 and the second clamping groove 3032 are all penetrated through the installation portion 303, one end of the first wire 40 extending out of the fixing member 30 penetrates through the first clamping groove 3031 to be connected with an external trigger, and one end of the second wire 50 extending out of the fixing member 30 penetrates through the second clamping groove 3032 to be connected with the external trigger; by providing the first and second card slots 3031 and 3032 in the mounting portion 303, the first and second card slots 3031 and 3032 respectively fix the first and second wires 40 and 50, thereby improving the connection firmness of the first and second wires 40 and 50 respectively with the trigger mechanism 20.
For example, the mounting portion 303 and the fixing member 30 may be integrally formed, and of course, the mounting portion 303 and the fixing member 30 may be connected by bolts.
With continued reference to fig. 2 to fig. 4, specifically, the mounting portion 303 extends along the central axis direction of the first via hole 304, a first clamping groove 3031 and a second clamping groove 3032 extending along the central axis direction of the first via hole 304 are formed in one side of the mounting portion 303, the first clamping groove 3031 is correspondingly disposed with the first via hole 304, the first clamping groove 3031 is communicated with the first via hole 304, the second clamping groove 3032 is correspondingly disposed with the second via hole 305, and the second clamping groove 3032 is communicated with the second via hole 305; in use, the first wire 40 sequentially passes through the first wire through hole 304 and the first slot 3031 to be connected with the external trigger, and the second wire 50 sequentially passes through the second wire through hole 305 and the second slot 3032 to be connected with the external trigger.
For example, the cross-sectional shape of the mounting portion 303 may be semicircular with a plane perpendicular to the central axis of the first via hole 304 as a cross-section, and of course, the cross-sectional shape of the mounting portion 303 may also be rectangular.
Referring to fig. 1 and 5, the triggering device 1 provided in this embodiment further includes a pressing plate 60, a first groove 601 adapted to the first conductive wire 40 and a second groove 602 adapted to the second conductive wire 50 are formed on the pressing plate 60, the first groove 601 and the second groove 602 penetrate through the pressing plate 60, the first groove 601 and the first clamping groove 3031 are correspondingly arranged, the second groove 602 and the second clamping groove 3032 are correspondingly arranged, the pressing plate 60 covers one side of the mounting portion 303, the pressing plate 60 is detachably connected with the mounting portion 303, one side, facing away from the first clamping groove 3031, of the first conductive wire 40 is inserted into the first groove 601, and one side, facing away from the second clamping groove 3032, of the second conductive wire 50 is inserted into the second groove 602; by providing the pressing plate 60, the pressing plate 60 fixes the first wire 40 and the second wire 50, thereby further improving the connection firmness of the first wire 40 and the second wire 50 with the trigger mechanism 20, respectively.
For example, the pressing plate 60 and the mounting portion 303 may be connected by a bolt, and of course, the pressing plate 60 and the mounting portion 303 may also be connected by a clamping connection. Referring to fig. 5, in an implementation manner in which the platen 60 and the mounting portion 303 are connected by bolts, bolt holes 603 are formed in the platen 60, and the bolt holes 603 penetrate through the platen 60; wherein the bolt hole 603 is located between the first groove 601 and the second groove 602; the mounting portion 303 is provided with a screw hole 3033, and the screw hole 3033 corresponds to the screw hole 603; in use, the bolt is passed through the bolt hole 603 and engaged with the threaded hole 3033.
In this embodiment, the triggering mechanism 20 includes a triggering electrode assembly 201 and an intermediate electrode assembly 202, the triggering electrode assembly 201 is inserted into the intermediate electrode assembly 202, one end of the first lead wire 40 facing away from the external trigger is connected with the triggering electrode assembly 201, and one end of the second lead wire 50 facing away from the external trigger is connected with the intermediate electrode assembly 202; by providing the trigger electrode assembly 201 and the intermediate electrode assembly 202, the trigger mechanism 20 cooperates with the ground electrode 10 to achieve reliable triggering of the plasma.
Further, with continued reference to fig. 2, the trigger electrode assembly 201 includes a trigger electrode 2011 and a first insulating member 2012, the first insulating member 2012 has a mounting hole formed therein, the trigger electrode 2011 is inserted into the mounting hole, and an outer peripheral wall of the trigger electrode 2011 abuts against an inner peripheral wall of the mounting hole; an adjusting hole extending along the central axis direction of the mounting hole is formed in the top end of the first insulating piece 2012, the adjusting hole is communicated with the mounting hole, an adjusting part 2014 is arranged at the top end of the trigger electrode 2011, and the adjusting part 2014 is inserted into the adjusting hole; by changing the length of the adjustment portion 2014, the distance from the tip of the first insulating member 2012 to the tip of the adjustment portion 2014 is further adjusted.
The central axis of the first insulating member 2012 is parallel to the central axis of the trigger electrode 2011, and in a practical manner, the central axis of the first insulating member 2012 is arranged in line with the central axis of the trigger electrode 2011.
Specifically, the adjustment hole of the length from the tip of the first insulating member 2012 to the tip of the adjusting portion 2014 is the primary cavity 2013, that is, the portion of the adjusting portion 2014 that is inserted into the adjustment hole is removed, and the remaining portion of the adjustment hole is the primary cavity 2013.
The adjusting portion 2014 has a rod shape, the diameter of the adjusting portion 2014 is smaller than the diameter of the trigger electrode 2011, and the outer peripheral wall of the adjusting portion 2014 is in contact with the inner peripheral wall of the adjusting hole; for example, the adjusting portion 2014 and the trigger electrode 2011 may be integrally formed.
In this embodiment, the length of the primary cavity 2013 along the central axis direction thereof is adjustable, and the length of the primary cavity 2013 is adjusted by adjusting the length of the adjusting portion 2014 along the central axis direction thereof; a large number of experimental researches are carried out in a laboratory on the cooperative unified research process of the trigger life and the trigger energy, so that the processing period of test pieces in the experimental process is greatly saved, the product research and development period is shortened, and the universality of the trigger device 1 is improved.
Further, in the present embodiment, the trigger electrode assembly 201 further includes a conducting disc 2015, the conducting disc 2015 is located at the bottom end of the first insulating element 2012, and the top end of the conducting disc 2015 is abutted to the bottom end of the first insulating element 2012; the conducting disc 2015 is provided with a through hole 2016 extending along the central axis direction of the mounting hole, the through hole 2016 is communicated with the mounting hole, the bottom end of the trigger electrode 2011 is provided with a threaded rod 2018, an internal thread matched with the threaded rod 2018 is arranged in the through hole 2016, the threaded rod 2018 is connected with the conducting disc 2015 through the through hole 2016, and one end of the first lead 40, which is away from the external trigger, is connected with the conducting disc 2015; on the one hand, the trigger electrode 2011 is connected with an external trigger through a first lead 40 to realize a trigger function; on the other hand, the trigger electrode 2011 is connected to the first wire 40 through the conductive disc 2015, and the welding efficiency is improved compared with the direct welding of the first wire 40 and the trigger electrode 2011.
For example, the threaded rod 2018 and the trigger electrode 2011 may be integrally formed; of course, the threaded rod 2018 and the trigger electrode 2011 may be connected by welding.
Referring to fig. 2 to 4, in the present embodiment, a bottom end of the accommodating groove 301 is provided with a fixing groove 306 extending along a central axis direction of the rotating cavity, the fixing groove 306 is communicated with the accommodating groove 301, and the first wire passing hole 304 is communicated with the accommodating groove 301 through the fixing groove 306; the conducting disc 2015 is inserted into the fixed groove 306, the outer peripheral wall of the conducting disc 2015 is abutted against the inner peripheral wall of the fixed groove 306, a welding hole 2017 is formed in the conducting disc 2015, the welding hole 2017 extends along the central axis direction of the rotating cavity, and the welding hole 2017 penetrates through the conducting disc 2015; the soldering hole 2017 is disposed corresponding to the first via hole 304, and an end of the first wire 40 facing away from the external trigger is inserted into the soldering hole 2017 through the first via hole 304.
Wherein the first wire 40 is soldered with the conductive disc 2015, thereby improving soldering efficiency. For example, the conducting disc 2015 may be made of CuCr, and of course, the conducting disc 2015 may be made of other metal materials, so as to achieve electrical conductivity.
With continued reference to fig. 2, in the present embodiment, the intermediate electrode assembly 202 includes an intermediate electrode 2021 and a second insulating member 2022, the second insulating member 2022 is provided with a fixing hole extending along the central axis direction of the mounting hole, the intermediate electrode 2021 is inserted into the fixing hole, and the outer peripheral wall of the intermediate electrode 2021 abuts against the inner peripheral wall of the fixing hole; a connecting hole extending along the central axis direction of the fixing hole is formed in the top end of the second insulating part 2022, the connecting hole is communicated with the fixing hole, a through hole 2024 extending along the central axis direction of the fixing hole is formed in the middle electrode assembly 202, the connecting hole is correspondingly arranged with the through hole 2024, and the connecting hole is communicated with the through hole 2024; the length of the connection hole in the direction of the center line thereof is further adjusted by adjusting the dimensions of the second insulating member 2022 and the fixing member 30.
The connection hole is a secondary cavity 2023, the length of the secondary cavity 2023 along the middle axis direction is adjustable, and the length of the secondary cavity 2023 is adjusted by adjusting the bottom end of the second insulating piece 2022, the top end of the fixing hole and the top end of the fixing piece 30; a large number of experimental researches are carried out in a laboratory on the cooperative unified research process of the trigger life and the trigger energy, so that the processing period of test pieces in the experimental process is greatly saved, and the product research and development period is shortened, and therefore, the universality of the trigger device 1 is further improved.
The secondary chamber 2023 is disposed corresponding to the injection hole 101, and the secondary chamber 2023 communicates with the injection hole 101.
The central axis of the second insulating member 2022 is parallel to the central axis of the intermediate electrode 2021, and in a practical manner, the central axis of the second insulating member 2022 is disposed in line with the central axis of the intermediate electrode 2021.
Specifically, the intermediate electrode 2021 is provided with a blind hole extending along the central axis direction of the via 2024, the blind hole is communicated with the via 2024, the first insulating member 2012 is inserted into the blind hole, the via 2024 is correspondingly arranged with the primary cavity 2013, the via 2024 is communicated with the primary cavity 2013, and the outer peripheral wall of the first insulating member 2012 is abutted with the inner peripheral wall of the blind hole. Wherein the central axis of the intermediate electrode 2021 is parallel to the central axis of the first insulator 2012, in a practical manner, the central axis of the intermediate electrode 2021 is disposed in line with the central axis of the first insulator 2012.
It should be noted that, the first insulating member 2012 is disposed between the trigger electrode 2011 and the intermediate electrode 2021, the second insulating member 2022 is disposed between the intermediate electrode 2021 and the ground electrode 10, and the primary cavity 2013 is in communication with the secondary cavity 2023 through the via 2024, so that the primary cavity 2013, the via 2024 and the secondary cavity 2023 together form a pipeline. The apertures of the primary cavity 2013, the via 2024, the secondary cavity 2023 and the injection hole 101 are substantially identical, and the central axes of the primary cavity 2013, the via 2024, the secondary cavity 2023 and the injection hole 101 are all arranged in line.
In order to facilitate that the plasma can only be injected between the main gaps along a unique injection path, an out-of-tolerance method is adopted among the trigger electrode 2011, the first insulating member 2012, the intermediate electrode 2021, the second insulating member 2022 and the ground electrode 10, so that the trigger electrode 2011, the first insulating member 2012, the intermediate electrode 2021, the second insulating member 2022 and the ground electrode 10 are reliably in pressure welding, and injection efficiency is improved.
The first insulating member 2012 and the second insulating member 2022 have the properties of ablation resistance and high temperature resistance.
With continued reference to fig. 2, in this embodiment, the first insulating member 2012, the intermediate electrode 2021, and the second insulating member 2022 are all inverted T-shaped; on the one hand, it is convenient to connect the second wire 50 with the intermediate electrode 2021; on the other hand, the insulation distance between the trigger electrode 2011 and the intermediate electrode 2021 is increased.
Illustratively, with a plane parallel to the central axis of the rotating cavity as a cross-section, the cross-sectional shape of the first insulator 2012, the cross-sectional shape of the intermediate electrode 2021, and the cross-sectional shape of the second insulator 2022 are each shaped like a Chinese character 'ji'.
Wherein, the bottom end of the first insulator 2012 is provided with a first flange 2019 extending radially outward of the rotating cavity, the bottom end of the intermediate electrode 2021 is provided with a second flange 2025 extending radially outward of the rotating cavity, the bottom end of the second insulator 2022 is provided with a third flange 2026 extending radially outward of the rotating cavity, the second flange 2025 is disposed between the first flange 2019 and the third flange 2026, the top end of the second flange 2025 is abutted with the bottom end of the third flange 2026, and the bottom end of the second flange 2025 is abutted with the top end of the first flange 2019.
In the above embodiment, the second flange 2025 is provided with the welding hole 2027 extending along the central axis direction of the rotating cavity, the welding hole 2027 penetrates through the second flange 2025, the first flange 2019 is provided with the insertion hole extending along the central axis direction of the rotating cavity, the insertion hole penetrates through the first flange 2019, the welding hole 2027 and the insertion hole are respectively arranged corresponding to the second via hole 305, and the insertion hole is respectively communicated with the insertion hole and the second via hole 305; in use, the end of the second wire 50 facing away from the external trigger passes through the second wire hole 305 and the jack to be connected with the solder hole 2027, thereby increasing the insulation distance between the trigger electrode 2011 and the intermediate electrode 2021.
For example, the ground electrode 10, the trigger electrode 2011 and the intermediate electrode 2021 may be made of CuW80, and of course, the ground electrode 10, the trigger electrode 2011 and the intermediate electrode 2021 may be made of other metal materials as long as they have conductive and anti-burning properties.
The triggering device 1 provided in this embodiment is manufactured according to a two-stage continuous triggering principle.
The working process of the trigger device 1 provided by the invention is as follows: a high-voltage pulse is applied between the trigger electrode 2011 and the middle electrode 2021, so that a first-stage cavity 2013 between the trigger electrode 2011 and the middle electrode 2021 is subjected to creeping discharge to ablate a high-temperature resistant insulating material to generate plasma, the plasma is shorted with a second-stage cavity 2023 between the middle electrode 2021 and the ground electrode 10 along with the continuous development of the plasma in a pipeline to form a spark discharge channel, the discharge channel ablates the inner wall of the pipeline to generate a large amount of high-temperature high-pressure plasma, the pressure in the pipeline is rapidly increased, a large pressure difference is formed between the discharge channel and the pipeline, the plasma is sprayed into a gas gap under the action of the large pressure difference, a large amount of initial charged particles are provided for gap discharge, and meanwhile, the sprayed plasma enables electric field distribution to be distorted, so that the gas gap is rapidly conducted under a low working coefficient.
In other embodiments, the triggering device 1 described above is used in a controllable self-healing energy dissipater.
Wherein the primary cavity 2013, the via 2024, and the secondary cavity 2023 together form a pipe, and the diameter of the pipe ranges from 1.5mm to 2.5mm. In the above embodiment, the diameter of the pipe is 2mm.
The triggering device 1 for the gas triggering gap switch comprises a ground electrode 10, a triggering mechanism 20 and a fixing piece 30; the ground electrode 10 and the fixing piece 30 are enclosed together to form a containing cavity, the triggering mechanism 20 is contained in the containing cavity, the top end of the ground electrode 10 is provided with an injection hole 101, the injection hole 101 is communicated with the containing cavity, the bottom end of the triggering mechanism 20 is provided with a first lead 40 and a second lead 50, the first lead 40 and the second lead 50 are spaced by a preset distance, and the first lead 40 and the second lead 50 penetrate through the fixing piece 30 and are connected with an external trigger; the triggering mechanism 20 comprises a triggering electrode assembly 201 and an intermediate electrode assembly 202, the triggering electrode assembly 201 is inserted into the intermediate electrode assembly 202, one end of the first lead wire 40, which is away from the external trigger, is connected with the triggering electrode assembly 201, and one end of the second lead wire 50, which is away from the external trigger, is connected with the intermediate electrode assembly 202; the trigger mechanism 20 is used to inject plasma into the gas gap; the trigger electrode assembly is connected with the first lead, the middle electrode assembly is connected with the second lead, the trigger electrode assembly is conveniently connected with the external trigger through the first lead, and the middle electrode assembly is connected with the external trigger through the second lead, so that the working difficulty coefficient is reduced; meanwhile, the triggering mechanism is arranged to spray the plasma into the gas gap, so that the reliable and long-life triggering of the plasma is realized.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present invention and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (8)
1. A triggering device for a gas triggered gap switch, characterized by: comprises a ground electrode, a triggering mechanism and a fixing piece;
the ground electrode and the fixing piece are enclosed together to form a containing cavity, an injection hole is formed in the top end of the ground electrode, the injection hole is communicated with the containing cavity, the triggering mechanism is contained in the containing cavity, a first wire and a second wire are arranged at the bottom end of the triggering mechanism, the first wire and the second wire are spaced by a preset distance, and the first wire and the second wire are connected with an external trigger through the fixing piece;
the trigger mechanism comprises a trigger electrode assembly and a middle electrode assembly, the trigger electrode assembly is inserted into the middle electrode assembly, one end of the first lead, which is away from the external trigger, is connected with the trigger electrode assembly, and one end of the second lead, which is away from the external trigger, is connected with the middle electrode assembly;
the trigger mechanism is used for spraying plasma into the gas gap;
the trigger electrode assembly comprises a trigger electrode and a first insulating piece, wherein a mounting hole is formed in the first insulating piece, the trigger electrode is inserted into the mounting hole, and the outer peripheral wall of the trigger electrode is abutted with the inner peripheral wall of the mounting hole;
an adjusting hole extending along the central axis direction of the mounting hole is formed in the top end of the first insulating piece, the adjusting hole is communicated with the mounting hole, an adjusting part is arranged at the top end of the trigger electrode, and the adjusting part is inserted into the adjusting hole;
the middle electrode assembly comprises a middle electrode and a second insulating piece, a fixing hole extending along the central axis direction of the mounting hole is formed in the second insulating piece, the middle electrode is inserted into the fixing hole, and the outer peripheral wall of the middle electrode is abutted with the inner peripheral wall of the fixing hole;
the top end of the second insulating piece is provided with a connecting hole extending along the central axis direction of the fixing hole, the connecting hole is communicated with the fixing hole, the middle electrode assembly is provided with a via hole extending along the central axis direction of the fixing hole, the connecting hole is correspondingly arranged with the via hole, and the connecting hole is communicated with the via hole;
the length adjusting hole from the top end of the first insulating piece to the top end of the adjusting part is a first-stage cavity; the connecting hole is a secondary cavity, and the length of the secondary cavity along the middle axis direction is adjustable;
the first insulating piece is arranged between the trigger electrode and the middle electrode, the second insulating piece is arranged between the middle electrode and the ground electrode, the primary cavity is communicated with the secondary cavity through the via hole, and the primary cavity, the via hole and the secondary cavity jointly form a pipeline.
2. The triggering device for a gas triggered gap switch as recited in claim 1, wherein: the trigger electrode assembly further comprises a conducting disc, wherein the conducting disc is positioned at the bottom end of the first insulating piece, and the top end of the conducting disc is abutted with the bottom end of the first insulating piece;
the utility model discloses a trigger device, including the mounting hole, switch on the disc, the mounting hole is connected to the trigger device, set up on the switch on disc along the through-hole that the axis direction of mounting hole extends, the through-hole with the mounting hole intercommunication, trigger electrode's bottom is provided with the threaded rod, set up in the through-hole with threaded rod assorted internal thread, the threaded rod passes through the through-hole with switch on the disc and be connected, first wire deviate from the one end of external trigger with switch on the disc and be connected.
3. The triggering device for a gas triggered gap switch as recited in claim 1, wherein: the accommodating cavity comprises a rotary cavity formed in the electrode and an accommodating groove formed in the fixing piece, one end of the triggering mechanism is inserted into the rotary cavity, the outer wall of the triggering mechanism is abutted with the inner wall of the rotary cavity, and the other end of the triggering mechanism is inserted into the accommodating groove;
the injection hole extends along the axis direction of the rotary cavity, and the injection hole is communicated with the rotary cavity.
4. The triggering device for a gas triggered gap switch as recited in claim 1, wherein: the first insulating piece, the middle electrode and the second insulating piece are all inverted T-shaped.
5. The triggering device for a gas triggered gap switch as recited in claim 1, wherein: the fixing piece is cylindrical, an air inlet groove extending along the radial direction of the fixing piece is formed in the top end of the fixing piece, and the air inlet groove is communicated with the accommodating cavity;
the air inlet groove is used for flowing outside insulating gas into the accommodating cavity.
6. The trigger device for a gas triggered gap switch of claim 5, wherein: the fixing piece is provided with a plurality of air inlet grooves, and the air inlet grooves are arranged around the circumference of the fixing piece at intervals.
7. The triggering device for a gas triggered gap switch as recited in claim 1, wherein: the bottom of mounting is provided with the installation department, the top of installation department with the bottom of mounting is connected, set up on the installation department with first draw-in groove of first wire looks adaptation and with the second draw-in groove of second wire looks adaptation, first draw-in groove with the second draw-in groove all link up the installation department, first wire stretches out the one end of mounting passes first draw-in groove with external trigger is connected, the second wire stretches out the one end of mounting passes the second draw-in groove with external trigger is connected.
8. The triggering device for a gas triggered gap switch as recited in claim 7 wherein: still include the clamp plate, set up on the clamp plate with first recess of first wire looks adaptation and with the second recess of second wire looks adaptation, first recess with the second recess is all run through the clamp plate, first recess with first draw-in groove corresponds the setting, the second recess with the second draw-in groove corresponds the setting, the clamp plate lid is established one side of installation department, the clamp plate with the installation department can dismantle and be connected, first wire deviates from one side of first draw-in groove is inserted and is established in the first recess, second wire deviates from one side of second draw-in groove is inserted and is established in the second recess.
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| CN202110799450.1A CN113725034B (en) | 2021-07-15 | 2021-07-15 | Triggering device for gas triggering gap switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102545851A (en) * | 2011-12-29 | 2012-07-04 | 华中科技大学 | Bootstrap pulse sharpening gap switch |
| CN203967511U (en) * | 2014-06-27 | 2014-11-26 | 中国人民解放军军械工程学院 | A kind of trigger voltage adjustable gas spark gap trigger switch |
| CN109378798A (en) * | 2018-12-11 | 2019-02-22 | 西安交通大学 | Transformer neutral point DC isolation device based on jet plasma trigger switch |
| CN110996489A (en) * | 2019-12-09 | 2020-04-10 | 西安交通大学 | Plasma spraying device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090134129A1 (en) * | 2007-11-27 | 2009-05-28 | General Electric Company | Ablative plasma gun apparatus and system |
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- 2021-07-15 CN CN202110799450.1A patent/CN113725034B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545851A (en) * | 2011-12-29 | 2012-07-04 | 华中科技大学 | Bootstrap pulse sharpening gap switch |
| CN203967511U (en) * | 2014-06-27 | 2014-11-26 | 中国人民解放军军械工程学院 | A kind of trigger voltage adjustable gas spark gap trigger switch |
| CN109378798A (en) * | 2018-12-11 | 2019-02-22 | 西安交通大学 | Transformer neutral point DC isolation device based on jet plasma trigger switch |
| CN110996489A (en) * | 2019-12-09 | 2020-04-10 | 西安交通大学 | Plasma spraying device |
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