CN116223869B - C wave generating device for aircraft lightning test - Google Patents
C wave generating device for aircraft lightning test Download PDFInfo
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- CN116223869B CN116223869B CN202310498670.XA CN202310498670A CN116223869B CN 116223869 B CN116223869 B CN 116223869B CN 202310498670 A CN202310498670 A CN 202310498670A CN 116223869 B CN116223869 B CN 116223869B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to the field of lightning effect test equipment, and discloses a C-wave generating device for an aircraft lightning test, which comprises a lightning current C-wave energy storage device, an energy conversion system and a measurement and control system; the energy conversion system comprises a filtering module and an energy conversion module; the energy conversion module comprises a plurality of electronic devices and an auxiliary connection mechanism; the measurement and control system comprises a measuring device and a control device; the invention skillfully utilizes the action characteristic of the controllable switching tube, utilizes the current on the follow current inductor and the load to adjust the on/off state of the switching tube, avoids full-bridge rectification and a complex LC multistage network to the mains supply, ensures that continuous injection of lightning C waves is more convenient and safer, reduces the charging voltage of a capacitor so as to reduce the risk of test, is more convenient and stable when electrically connecting all electronic devices, and is convenient for adjusting the circuit connection relation among all electronic devices and the replacement of the electronic devices.
Description
Technical Field
The invention relates to the field of lightning effect test equipment, in particular to a C wave generating device for an aircraft lightning test.
Background
With the development of technology, the current high voltage technology and power electronics technology are mature, but the main implementation mode of the lightning current C-wave generator is LC link and full bridge rectification. The traditional LC cascade network has complex structure and low energy utilization rate. The full-bridge rectification method needs to boost and rectify the commercial power, and is easy to cause interference to the power grid when the lightning current A, B, D wave is matched to continuously generate.
The common lightning current C wave generator greatly limits the carrying capacity of current equipment, brings a certain problem to the safety of equipment use, is poor in economical efficiency, and meanwhile, various electronic devices are electrically connected in a fixed connection mode such as soldering and the like when being electrically connected, once some electronic devices are problematic or damaged, the replacement is troublesome, and the connection relation among the electronic devices cannot be conveniently adjusted and the circuit is not adjusted.
Disclosure of Invention
The invention aims to solve the problems and provide the C-wave generating device for the lightning test of the airplane.
The invention provides a C-wave generating device for an aircraft lightning test, which comprises a lightning current C-wave energy storage device, an energy conversion system and a measurement and control system, wherein the lightning current C-wave energy storage device is connected with the lightning current C-wave energy storage device;
the lightning current C wave energy storage device comprises a direct current charging device and a first-stage switch K 1 Energy storage capacitor C 0 The direct current charging device passes through a first-stage switch K 1 And energy storage capacitor C 0 Parallel connection;
the energy conversion system comprises a filtering module and an energy conversion module, wherein the filtering module comprises a front-stage filtering component and a rear-stage filtering component, and the front-stage filtering component comprises a resistor R 1 Filter capacitor C 1 Second stage switch K 2 Resistance R 1 And filter capacitor C 1 In series and via a second stage switch K 2 And energy storage capacitor C 0 In parallel, the post-stage filter component comprises a capacitor C 2 ；
The energy conversion module comprises a plurality of electronic devices and an auxiliary connecting mechanism, wherein the electronic devices are freewheel inductors L respectively 1 Switch tube S 1 Switch tube S 2 Diode D 1 And diode D 2 The diode D 1 And diode D 2 Respectively with a switch tube S 1 And a switch tube S 2 Reverse parallel connection, freewheel inductance L 1 Switch tube S 1 Switch tube S 2 Form T-shaped connection and switch tube S 2 Via capacitor C 2 And the load R L Serial connection;
the auxiliary connection mechanism comprises an electronic device auxiliary connection plate, a plurality of electronic device plug holes which are equidistantly arranged on the electronic device auxiliary connection plate, outer connection plug holes which are symmetrically arranged on two sides of the electronic device plug holes, an elastic limiting mechanism which is arranged in the outer connection plug holes, two linkage limiting mechanisms which are arranged in the electronic device plug holes and an outer connection plug, wherein the bottom of each electronic device plug hole is connected with a metal conducting plate, two ends of each metal conducting plate extend into the corresponding outer connection plug holes, the elastic limiting mechanisms are connected with the corresponding linkage limiting mechanisms, the elastic limiting mechanisms are pressed when the outer connection plug is inserted into each outer connection plug hole, and the electronic devices which are inserted into the electronic device plug holes in a limiting mode are driven by the corresponding linkage limiting mechanisms through the elastic limiting mechanisms and are electrically connected with the outer connection plug through the metal conducting plates;
the measurement and control system comprises a measuring device and a control device, wherein the measuring device is used for detecting the follow current inductance L in real time 1 Current i on 1 And load current i 2 The control device is used for controlling the switch tube S 1 And a switch tube S 2 Is provided.
As a further optimization scheme of the invention, the elastic limiting mechanism comprises a first elastic gas adjusting component, a first limiting component and a second elastic gas adjusting component, wherein the first limiting component is connected to one end of the first elastic gas adjusting component in a sliding mode, the second elastic gas adjusting component is connected between the first limiting component and the first elastic gas adjusting component, a hole groove is formed in the inner wall of the externally-connected plug hole, the other end of the first elastic gas adjusting component is connected to the inner wall of the hole groove, the first elastic gas adjusting component is communicated with the linkage limiting mechanism, the first limiting component is used for contacting an externally-connected plug and limiting and fixing the externally-connected plug in the externally-connected plug hole, and the second elastic gas adjusting component is used for adjusting pressure applied to the externally-connected plug by the first limiting component.
As a further optimization scheme of the invention, the first elastic gas regulating assembly comprises a first connecting plate, a fixed rod connected to the middle position of the first connecting plate, a first connecting ring sleeved on the fixed rod, a first spring and a first telescopic corrugated pipe connected between the first connecting plate and the first connecting ring, a gas-tight piece is arranged at the joint of the first connecting ring and the fixed rod, a gas-tight chamber is formed among the first connecting plate, the first connecting ring and the first telescopic corrugated pipe, the first connecting plate is connected to the inner wall of the hole groove, a first ventilation duct is arranged on the inner wall of the hole groove, a first perforation is arranged on the first connecting plate, and the gas-tight chamber is communicated with the first ventilation duct through the first perforation.
As a further optimization scheme of the invention, the first limiting component comprises a pin head arranged in a hole groove, a first cavity and a second ventilation duct arranged in the pin head, a plastic damping sleeve connected to one end of the pin head and a fixed plate arranged in the first cavity in a sliding manner, one end of the fixed rod extends into the first cavity and is fixedly connected with the fixed plate, the second elastic gas regulating component is connected between one end of the fixed plate and the inner wall of the first cavity, a second cavity is formed between the plastic damping sleeve and the pin head, and the second cavity is communicated with the second ventilation duct.
As a further optimization scheme of the invention, the second elastic gas regulating assembly comprises a second connecting plate, a second connecting ring, a second spring and a second telescopic corrugated pipe, wherein the second spring and the second telescopic corrugated pipe are connected between the second connecting plate and the second connecting ring, the second connecting plate and the second connecting ring are respectively connected to the inner walls of the fixed plate and the first cavity, a gas storage cavity is formed among the second connecting plate, the second connecting ring and the second telescopic corrugated pipe, and the gas storage cavity is communicated with the second cavity through a second ventilation duct.
As a further optimization scheme of the invention, the linkage limiting mechanism comprises a second limiting assembly and a gas flow direction adjusting assembly arranged in the second limiting assembly, the second limiting assembly is communicated with the airtight chamber through a first ventilation duct, and the gas flow direction adjusting assembly is used for adjusting the pressure applied to the electronic device by the second limiting assembly.
As a further optimization scheme of the invention, the second limiting component comprises a ring groove arranged on the inner wall of the plugging hole of the electronic device, a fixed ring body and an annular damping sleeve which are connected to the inner wall of the ring groove, a third ventilation duct arranged in the fixed ring body, a plurality of branch air ducts, a plurality of pneumatic sliding grooves and a piston rod arranged in the pneumatic sliding grooves in a sliding manner, one end of the piston rod extends to the outside of the fixed ring body and is in contact with the annular damping sleeve, a pressure release cavity is formed between the annular damping sleeve and the inner wall of the ring groove, the third ventilation duct is communicated with the plurality of pneumatic sliding grooves through the plurality of branch air ducts, the pressure release cavity is communicated with the first ventilation duct through the third ventilation duct, and the air flow direction regulating component is arranged at the communication position of the third ventilation duct and the pressure release cavity.
As a further optimization scheme of the invention, the gas flow direction regulating assembly comprises a sealing ring connected to the inner wall of the third gas channel, a limiting rod connected to the inner wall of the third gas channel in a sliding manner, an airtight plug connected to one end of the limiting rod and a third spring connected between the airtight plug and the inner wall of the third gas channel, wherein the sealing ring, the airtight plug and the limiting rod are coaxially arranged, and the airtight plug is matched with the sealing ring.
As a further optimization scheme of the invention, the bottom end of the external connection plug is connected with a metal conductive piece, an electric wire is arranged in the external connection plug, one end of the electric wire is connected with the metal conductive piece, and the other end of the electric wire extends to the outside of the external connection plug.
The invention has the beneficial effects that: the invention skillfully utilizes the action characteristic of the controllable switching tube, utilizes the current on the follow current inductor and the load to adjust the on/off state of the switching tube, avoids full-bridge rectification and a complex LC multistage network to the mains supply, ensures that continuous injection of lightning C waves is more convenient and safer, reduces the charging voltage of a capacitor so as to reduce the risk of test, is more convenient and stable when electrically connecting all electronic devices, and is convenient for adjusting the circuit connection relation among all electronic devices and the replacement of the electronic devices.
Drawings
FIG. 1 is a block diagram of the overall system architecture of the present invention;
FIG. 2 is a circuit diagram of the energy conversion system of the present invention;
FIG. 3 is a graph of measured current waveforms in accordance with the present invention;
FIG. 4 is a mating view of the electronics splice plate of the present invention with an electronic device;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4 in accordance with the present invention;
FIG. 6 is a cross-sectional view taken at B-B of FIG. 4 in accordance with the present invention;
FIG. 7 is an enlarged view of the invention at C in FIG. 6;
fig. 8 is an enlarged view of the invention at D in fig. 6.
In the figure: 1. an electronic device sub-board; 101. an electronic device plug hole; 1010. a ring groove; 102. an external connection plug hole; 1020. a hole groove; 1021. a first vent passage; 103. a metal conductive plate; 2. an elastic limit mechanism; 201. a first connection plate; 202. a fixed rod; 203. a first connection ring; 204. a first spring; 205. a first bellows; 206. a pin head; 2060. a first cavity; 2061. a second vent passage; 207. a plastic damping sleeve; 2070. a second cavity; 208. a fixing plate; 209. a second connecting plate; 210. a second connecting ring; 211. a second spring; 212. the second telescopic corrugated pipe; 3. a linkage limiting mechanism; 301. a fixed ring body; 3010. a third vent passage; 3011. branching off the gas duct; 3012. pneumatic sliding grooves; 302. a piston rod; 303. an annular damping sleeve; 304. an airtight plug; 305. a third spring; 4. an external connection plug; 401. a metal conductive member; 402. an electric wire.
Detailed Description
The subject matter described herein will now be discussed with reference to example embodiments. It is to be understood that these embodiments are merely discussed so that those skilled in the art may better understand and implement the subject matter described herein and that changes may be made in the function and arrangement of the elements discussed without departing from the scope of the disclosure herein. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
Example 1
1-8, a C wave generating device for an aircraft lightning test comprises a lightning current C wave energy storage device, an energy conversion system and a measurement and control system;
the lightning current C wave energy storage device comprises a direct current charging device and a first-stage switch K 1 Energy storage capacitor C 0 The direct current charging device passes through the first-stage switch K 1 And energy storage capacitor C 0 Parallel connection;
the energy conversion system comprises a filtering module and an energy conversion module, wherein the filtering module comprises a front-stage filtering component and a rear-stage filtering component, and the front-stage filtering component comprises a resistor R 1 Filter capacitor C 1 Second stage switch K 2 Resistance R 1 And filter capacitor C 1 In series and via a second stage switch K 2 And energy storage capacitor C 0 In parallel, the post-stage filter assembly comprises a capacitor C 2 ；
The energy conversion module comprises a plurality of electronic devices and an auxiliary connection mechanism, wherein the plurality of electronic devices are freewheel inductors L respectively 1 Switch tube S 1 Switch tube S 2 Diode D 1 And diode D 2 Diode D 1 And diode D 2 Respectively with a switch tube S 1 And a switch tube S 2 Reverse parallel connection, freewheel inductance L 1 Switch tube S 1 Switch tube S 2 Form T-shaped connection and switch tube S 2 Via capacitor C 2 And the load R L Serial connection;
the auxiliary connection mechanism comprises an electronic device auxiliary connection plate 1, a plurality of electronic device plug holes 101 which are equidistantly arranged on the electronic device auxiliary connection plate 1, outer connecting plug holes 102 which are symmetrically arranged at two sides of the electronic device plug holes 101, an elastic limiting mechanism 2 which is arranged in the outer connecting plug holes 102, two linkage limiting mechanisms 3 which are arranged in the electronic device plug holes 101, and an outer connecting plug 4, wherein the bottom of the electronic device plug holes 101 is connected with a metal conducting plate 103, two ends of the metal conducting plate 103 extend into the corresponding outer connecting plug holes 102, the elastic limiting mechanism 2 is connected with the corresponding linkage limiting mechanisms 3, the elastic limiting mechanisms 2 are pressed when the outer connecting plug 4 is inserted into the outer connecting plug holes 102, and the electronic devices which are inserted into the electronic device plug holes 101 are limited and fixed through the corresponding linkage limiting mechanisms 3 driven by the elastic limiting mechanisms 2, and are electrically connected with the outer connecting plug 4 through the metal conducting plate 103;
the measurement and control system comprises a measuring device and a control device, wherein the measuring device is used for detecting the follow current inductance L in real time 1 Current i on 1 And load current i 2 The control device is used for controlling the switch tube S 1 And a switch tube S 2 The measuring device can adopt a current sensor, the control device can adopt a negative feedback controller, and the negative feedback controller adopts i which is measured in real time 1 And i 2 ；
The bottom of the outer connection plug 4 is connected with a metal conductive piece 401, and an electric wire 402 is arranged in the outer connection plug 4, one end of the electric wire 402 is connected with the metal conductive piece 401, and the other end extends to the outside of the outer connection plug 4.
It should be noted that, taking the load capacity of 4Ω as an example, implementing lightning current C-wave, charging a 5F/1kV capacitor to 650V according to the calculation requirement, and determining the capacitor type selection and the capacitor charging voltage according to the load information first: total capacitance 5F, capacitor charging voltage 650V, controller set point, i is determined according to test requirements 1 And i 2 Not more than 400A, i 2 The integral value is 200C, and the filtering unit R is determined according to the ripple requirement 1 、C 1 、C 2 According to the specification of different current loops to determine the free-wheeling inductance L 1 Switch tube S 1 Switch tube S 2 Diode D 1 And diode D 2 The test is started, the capacitor is charged first, and after the voltage of the capacitor reaches the set value, the switch K is turned off 1 Closure K 2 Controller controls S 2 Closing, S 1 The switch-off and the load current rise, when the load current i 2 Above 400A, S 1 Closing, S 2 The open state, the inductance current rises, when the inductance current i 1 Above 400A, S 2 Closing, S 1 Breaking to reciprocate until i 2 Integral value of 200C, S 2 Disconnection, S 1 The test is finished, the actual measurement current waveform is shown in figure 3, a lightning current test system with high load and low charging voltage is realized, the hard isolation from a power grid is realized by energy conversion of the output of the capacitor, and the energy utilization rate is high, safe and stable;
while in the opposite such as the flywheel inductance L 1 Switch tube S 1 Switch tube S 2 Diode D 1 And diode D 2 When the electronic devices are electrically connected, the corresponding electronic devices are inserted into the electronic device inserting holes 101 on the electronic device auxiliary board 1, at the moment, the linkage limiting mechanism 3 in the electronic device inserting holes 101 is not contacted with the metal pins of the electronic devices, the electronic devices can be conveniently inserted and pulled out, and then the diode D is needed to be inserted 1 And diode D 2 Respectively with a switch tube S 1 And a switch tube S 2 In the anti-parallel connection, the diodes D are respectively connected 1 Diode D 2 Switch tube S 1 And a switch tube S 2 The external connection plug 4 is inserted into the external connection plug hole 102 correspondingly arranged in the electronic device plug hole 101, the corresponding external connection plug 4 is connected with different pins on different electronic devices, the external connection plug 4 is inserted into the external connection plug hole 102, the elastic limiting mechanism 2 is extruded by the external connection plug 4, elastic force is generated after extrusion of the elastic limiting mechanism 2, limiting pressure is applied to the external connection plug 4, the external connection plug 4 is limited and fixed in the external connection plug hole 102, meanwhile, the elastic limiting mechanism 3 is driven to deform gradually after being pressed and deformed until the elastic limiting mechanism contacts with the metal pins of the electronic devices, a set pressure value is applied to the metal pins of the electronic devices, the electronic devices are limited and fixed, the electronic devices are applicable to pins of different specifications, the pins are prevented from being deformed due to pressure change when the different pins are limited, the pins are prevented from being deformed due to deformation, the situation that the pins are in contact with the metal conductive plates 103 is prevented, and the corresponding external connection plug 4 is replaced directly when the electronic devices are not pulled out, and the electronic devices are replaced conveniently.
As shown in fig. 6-8, the elastic limiting mechanism 2 includes a first elastic gas adjusting component, a first limiting component slidingly connected to one end of the first elastic gas adjusting component, and a second elastic gas adjusting component connected between the first limiting component and the first elastic gas adjusting component, a hole slot 1020 is formed on an inner wall of the external connection plug hole 102, the other end of the first elastic gas adjusting component is connected to an inner wall of the hole slot 1020, the first elastic gas adjusting component is communicated with the linkage limiting mechanism 3, the first limiting component is used for contacting and limiting the external connection plug 4 in the external connection plug hole 102, and the second elastic gas adjusting component is used for adjusting the pressure applied by the first limiting component on the external connection plug 4.
It should be noted that, as described above, when the external connection plug 4 is inserted into the external connection plug hole 102, the external connection plug 4 gradually contacts with the first limiting component and extrudes the first limiting component, so that it gradually retracts into the hole slot 1020, and extrudes the first elastic gas adjusting component and the second elastic gas adjusting component, where the first elastic gas adjusting component is deformed after extrusion, its internal space is reduced, the gas pressure is increased, and the gas stored in the first elastic gas adjusting component is input into the linkage limiting mechanism 3, so that the linkage limiting mechanism 3 gradually expands and deforms until the linkage limiting mechanism 3 contacts with the metal pins of the electronic device, limiting and fixing the metal pins, and the pressure value applied to the metal pins is always kept at a stable value.
The first elastic gas adjusting component comprises a first connecting plate 201, a fixed rod 202 connected to the middle of the first connecting plate 201, a first connecting ring 203 sleeved on the fixed rod 202, a first spring 204 connected between the first connecting plate 201 and the first connecting ring 203, and a first bellows 205, wherein an airtight piece is arranged at the joint of the first connecting ring 203 and the fixed rod 202, an airtight chamber is formed between the first connecting plate 201, the first connecting ring 203 and the first bellows 205, the first connecting plate 201 is connected to the inner wall of the hole tank 1020, a first ventilation duct 1021 is arranged on the inner wall of the hole tank 1020, a first perforation is arranged on the first connecting plate 201, and the airtight chamber is communicated with the first ventilation duct 1021 through the first perforation.
It should be noted that, as described above, when the external plug 4 is inserted into the external plug hole 102, the first limiting component is gradually pressed and retracted into the hole slot 1020, when the first limiting component is retracted, the first connecting ring 203 connected with the first limiting component is driven to move in the same direction and the same distance, and the first bellows 205 and the first spring 204 are extruded, the first spring 204 is compressed and deformed, and generates elastic force, the elastic force is transmitted through the first connecting ring 203 and then applied to the first limiting component, so that the first limiting component applies pressure to the external plug 4, so that the external plug 4 is limited and fixed, and the space of the airtight chamber formed among the first connecting plate 201, the first connecting ring 203 and the first bellows 205 is compressed, and the gas stored in the space is introduced into the linkage limiting mechanism 3 after flowing through the first through hole 1021, so that the linkage limiting mechanism 3 is expanded and deformed until the linkage limiting mechanism 3 contacts with the metal pins of the electronic device, the metal pins are limited and the pressure value applied to the metal pins is always kept at a stable value.
The linkage limiting mechanism 3 comprises a second limiting component and a gas flow direction adjusting component arranged in the second limiting component, the second limiting component is communicated with the airtight cavity through a first ventilation duct 1021, and the gas flow direction adjusting component is used for adjusting the pressure applied to the electronic device by the second limiting component.
The second limiting component comprises a ring groove 1010 arranged on the inner wall of the plugging hole 101 of the electronic device, a fixed ring body 301 and an annular damping sleeve 303 which are connected on the inner wall of the ring groove 1010, a third air vent channel 3010 arranged in the fixed ring body 301, a plurality of branch air vent channels 3011, a plurality of pneumatic sliding grooves 3012 and a piston rod 302 which is arranged in the pneumatic sliding grooves 3012 in a sliding manner, wherein one end of the piston rod 302 extends to the outside of the fixed ring body 301 and contacts with the annular damping sleeve 303, a pressure release cavity is formed between the annular damping sleeve 303 and the inner wall of the ring groove 1010, the third air vent channel 3010 is communicated with the plurality of pneumatic sliding grooves 3012 through the plurality of branch air vent channels 3010, the pressure release cavity is communicated with the first air vent channel 1021 through the third air vent channel 3010, and the gas flow direction regulating component is arranged at the communication position of the third air vent channel 3010 and the pressure release cavity;
the gas flow direction adjusting component comprises a sealing ring connected to the inner wall of the third gas channel 3010, a limiting rod connected to the inner wall of the third gas channel 3010 in a sliding mode, an airtight plug 304 connected to one end of the limiting rod, and a third spring 305 connected between the airtight plug 304 and the inner wall of the third gas channel 3010, wherein the sealing ring, the airtight plug 304 and the limiting rod are all coaxially arranged, and the airtight plug 304 is matched with the sealing ring.
As described above, since the shape of the outer plug 4 is fixed, the distance by which the outer plug 4 presses the first stopper member to retract into the orifice groove 1020 is kept constant, and therefore, the amount of spatial variation of the airtight chamber is kept constant, and the amount of gas flowing into the link stopper mechanism 3 is kept constant, so that the gas flows into the link stopper mechanism 3, and the gas flows into the third gas passage 3010 on the fixed ring 301 from the first gas passage 1021 and is branched to each of the branched gas passages 3011, and at this time, the gas cannot directly flow into the pressure release chamber formed between the annular damper sleeve 303 and the inner wall of the annular groove 1010 due to the restriction of the gas flow direction regulating member, and therefore, the gas at this time gradually flows into the gas slide groove 3012 from the branched gas passages 3011 and gradually pushes the piston rod 302 toward the metal pins of the electronic device, in this process, the annular damping sleeve 303 is gradually pushed and deformed by the piston rod 302 until the piston rod 302 pushes the annular damping sleeve 303 to be blocked after being contacted with the metal pins of the electronic device, at this time, as the gas entering the third gas channel 3010 continuously increases, but the spaces of the third gas channel 3010, the branch gas channel 3011 and the pneumatic chute 3012 are not changed any more, so that the gas pressure increases, until the gas pressure increases to push the airtight plug 304 to move towards the pressure release chamber, a gap exists between the airtight plug 304 and the sealing ring, the gas can flow into the pressure release chamber until the airtight plug 304 is retracted under the action of the third spring 305 after the gas pressure stabilizes, at this time, the pressure of the piston rod 302 applied to the metal pins of the electronic device is kept unchanged, which is determined by the elastic coefficient of the third spring 305, the moving distance of the piston rod 302 is variable, the annular damping sleeve 303 can increase the friction force between the piston rod 302 and the metal pins of the electronic device.
Wherein, the first limiting component comprises a pin head 206 arranged in the hole slot 1020, a first cavity 2060 and a second air vent channel 2061 arranged in the pin head 206, a plastic damping sleeve 207 connected with one end of the pin head 206 and a fixed plate 208 arranged in the first cavity 2060 in a sliding manner, one end of the fixed rod 202 extends into the first cavity 2060 and is fixedly connected with the fixed plate 208, the second elastic gas regulating component is connected between one end of the fixed plate 208 and the inner wall of the first cavity 2060, a second cavity 2070 is formed between the plastic damping sleeve 207 and the pin head 206, and the second cavity 2070 is communicated with the second air vent channel 2061;
the second elastic gas regulating assembly comprises a second connecting plate 209, a second connecting ring 210, a second spring 211 and a second bellows 212 which are connected between the second connecting plate 209 and the second connecting ring 210, wherein the second connecting plate 209 and the second connecting ring 210 are respectively connected on the inner walls of the fixed plate 208 and the first cavity 2060, a gas storage chamber is formed between the second connecting plate 209, the second connecting ring 210 and the second bellows 212, and the gas storage chamber is communicated with the second cavity 2070 through a second gas vent channel 2061.
It should be noted that, as described above, when the external connection plug 4 is inserted into the external connection plug hole 102, the pin head 206 and the plastic damping sleeve 207 on the pin head 206 are gradually extruded, and the pin head 206 is driven to gradually move towards the hole slot 1020, when the pin head 206 moves, the first connection ring 203 and the second connection ring 210 are driven to move in the same direction and the same distance, the second connection ring 210 moves and then presses the second spring 211 and the second bellows 212, at this time, the air storage chamber formed between the second connection plate 209, the second connection ring 210 and the second bellows 212 is gradually compressed, and the air in the air storage chamber is led into the second cavity 2070 formed between the plastic damping sleeve 207 and the pin head 206 through the second air channel 2061, at this time, the pressure borne by the external connection plug 4 includes the pressure value after the air pressure in the first spring 204, the second spring 211 and the second cavity 2070 is integrated, and the air pressure in the second cavity 2070 is increased, so that the plastic damping sleeve 207 is deformed, and the contact area between the plastic damping sleeve 207 and the external connection plug 4 is increased, and the plastic damping sleeve 207 is better in effect of the external connection plug 206.
The embodiment has been described above with reference to the embodiment, but the embodiment is not limited to the above-described specific implementation, which is only illustrative and not restrictive, and many forms can be made by those of ordinary skill in the art, given the benefit of this disclosure, are within the scope of this embodiment.
Claims (9)
1. The C-wave generating device for the lightning test of the aircraft is characterized by comprising a lightning current C-wave energy storage device, an energy conversion system and a measurement and control system;
the lightning current C wave energy storage device comprises a direct current charging device and a first-stage switch K 1 Energy storage capacitor C 0 The direct current charging device passes through a first-stage switch K 1 And energy storage capacitor C 0 Parallel connection;
the energy conversion system comprises a filtering module and an energy conversion module, wherein the filtering module comprises a front-stage filtering component and a rear-stage filtering component, and the front-stage filtering component comprises a resistor R 1 Filter capacitor C 1 Second stage switch K 2 Resistance R 1 And filter capacitor C 1 In series and via a second stage switch K 2 And energy storage capacitor C 0 In parallel, the post-stage filter component comprises a capacitor C 2 ；
The energy conversion module comprises a plurality of electronic devices and an auxiliary connecting mechanism, wherein the electronic devices are freewheel inductors L respectively 1 Switch tube S 1 Switch tube S 2 Diode D 1 And diode D 2 The diode D 1 And diode D 2 Respectively with a switch tube S 1 And a switch tube S 2 Reverse parallel connection, freewheel inductance L 1 Switch tube S 1 Switch tube S 2 Form T-shaped connection and switch tube S 2 Via capacitor C 2 And the load R L Serial connection;
the auxiliary connection mechanism comprises an electronic device auxiliary connection plate (1), a plurality of electronic device plug holes (101) which are equidistantly arranged on the electronic device auxiliary connection plate (1), external connection plug holes (102) which are symmetrically arranged on two sides of the electronic device plug holes (101), an elastic limit mechanism (2) which is arranged in the external connection plug holes (102), two linkage limit mechanisms (3) which are arranged in the electronic device plug holes (101) and an external connection plug (4), wherein the bottom of the electronic device plug holes (101) is connected with a metal conducting plate (103), two ends of the metal conducting plate (103) extend into the corresponding external connection plug holes (102), the elastic limit mechanism (2) is connected with the corresponding linkage limit mechanisms (3), when the external connection plug (4) is inserted into the external connection plug holes (102), the elastic limit mechanisms (2) drive the corresponding limit mechanisms (3) to limit electronic devices which are inserted into the electronic device plug holes (101) through the elastic limit mechanisms, and the electronic devices are electrically connected with the external connection plug (4) through the metal conducting plate (103);
the measurement and control system comprises a measuring device and a control device, wherein the measuring device is used for detecting the follow current inductance L in real time 1 Current oni 1 And load currenti 2 The control device is used for controlling the switch tube S 1 And a switch tube S 2 Is connected with the power supply;
the measuring device adopts a current sensor, the control device adopts a negative feedback controller, and during test, the energy storage capacitor C is firstly subjected to 0 Charging, waiting for energy storage capacitor C 0 After the voltage reaches 650V, the switch K is turned off 1 Closure K 2 Negative feedback controller controls switch tube S 2 Closing, switching tube S 1 Disconnection, load currenti 2 Rise when the load currenti 2 When the voltage is higher than 400A, the switch tube S 1 Closing, switching tube S 2 Disconnect, freewheel inductor L 1 Is (1) the current of the (a)i 1 Rising, when the flywheel inductance L 1 Is (1) the current of the (a)i 1 When the voltage is higher than 400A, the switch tube S is controlled 2 Closing, switching tube S 1 Breaking to reciprocate untili 2 When the integral value reaches 200C, S 2 Disconnection, S 1 And (5) disconnection and ending the test.
2. The C-wave generating device for aircraft lightning tests according to claim 1, wherein the elastic limiting mechanism (2) comprises a first elastic gas adjusting component, a first limiting component connected to one end of the first elastic gas adjusting component in a sliding manner, and a second elastic gas adjusting component connected between the first limiting component and the first elastic gas adjusting component, a hole slot (1020) is formed in the inner wall of the outer connecting plug hole (102), the other end of the first elastic gas adjusting component is connected to the inner wall of the hole slot (1020), the first elastic gas adjusting component is communicated with the linkage limiting mechanism (3), the first limiting component is used for contacting the outer connecting plug (4) and limiting and fixing the first limiting component in the outer connecting plug hole (102), and the second elastic gas adjusting component is used for adjusting the pressure applied to the outer connecting plug (4) by the first limiting component.
3. The C-wave generating device for aircraft lightning tests according to claim 2, wherein the first elastic gas adjusting component comprises a first connecting plate (201), a fixing rod (202) connected to the middle of the first connecting plate (201), a first connecting ring (203) sleeved on the fixing rod (202), a first spring (204) and a first telescopic bellows (205) connected between the first connecting plate (201) and the first connecting ring (203), a gas tight piece is arranged at the joint of the first connecting ring (203) and the fixing rod (202), a gas tight chamber is formed between the first connecting plate (201), the first connecting ring (203) and the first telescopic bellows (205), the first connecting plate (201) is connected to the inner wall of the hole slot (1020), a first hole channel (1021) is arranged on the inner wall of the hole slot (1020), a first perforation is arranged on the first connecting plate (201), and the gas tight chamber is communicated with the first hole channel (1021) through the first perforation.
4. A C-wave generating device for aircraft lightning testing according to claim 3, wherein the first limiting component comprises a pin head (206) arranged in the hole groove (1020), a first cavity (2060) and a second air vent channel (2061) arranged in the pin head (206), a plastic damping sleeve (207) connected to one end of the pin head (206) and a fixing plate (208) slidably arranged in the first cavity (2060), one end of the fixing rod (202) extends into the first cavity (2060) and is fixedly connected with the fixing plate (208), the second elastic gas regulating component is connected between one end of the fixing plate (208) and the inner wall of the first cavity (2060), a second cavity (2070) is formed between the plastic damping sleeve (207) and the pin head (206), and the second cavity (2070) is communicated with the second air vent channel (2061).
5. The C-wave generating device for lightning tests of an aircraft according to claim 4, wherein the second elastic gas regulating assembly comprises a second connecting plate (209), a second connecting ring (210), a second spring (211) and a second bellows (212) connected between the second connecting plate (209) and the second connecting ring (210), the second connecting plate (209) and the second connecting ring (210) are respectively connected to the fixing plate (208) and the inner wall of the first cavity (2060), and a gas storage chamber is formed between the second connecting plate (209), the second connecting ring (210) and the second bellows (212), and is communicated with the second cavity (2070) through a second gas vent channel (2061).
6. The C-wave generating device for aircraft lightning tests according to claim 5, wherein the linkage limiting mechanism (3) comprises a second limiting component and a gas flow direction adjusting component arranged in the second limiting component, the second limiting component is communicated with the airtight chamber through a first ventilation duct (1021), and the gas flow direction adjusting component is used for adjusting the pressure applied to the electronic device by the second limiting component.
7. The C-wave generating device for lightning tests of an aircraft according to claim 6, wherein the second limiting component comprises a ring groove (1010) arranged on the inner wall of the plugging hole (101) of the electronic device, a fixed ring body (301) and an annular damping sleeve (303) connected on the inner wall of the ring groove (1010), a third air vent channel (3010) arranged in the fixed ring body (301), a plurality of branch air vent channels (3011) and a plurality of pneumatic slide channels (3012) and a piston rod (302) slidably arranged in the pneumatic slide channels (3012), one end of the piston rod (302) extends to the outside of the fixed ring body (301) and is in contact with the annular damping sleeve (303), a pressure release chamber is formed between the annular damping sleeve (303) and the inner wall of the ring groove (1010), the third air vent channel (3010) is communicated with the plurality of pneumatic slide channels (3012) through the third air vent channel (3010), and the air flow direction regulating component is arranged at the position of the third air vent channel (3010).
8. The C-wave generating device for aircraft lightning testing according to claim 7, wherein the gas flow direction adjusting assembly comprises a sealing ring connected to the inner wall of the third ventilation hole (3010), a limit rod slidingly connected to the inner wall of the third ventilation hole (3010), an airtight plug (304) connected to one end of the limit rod, and a third spring (305) connected between the airtight plug (304) and the inner wall of the third ventilation hole (3010), and the sealing ring, the airtight plug (304) and the limit rod are all coaxially arranged, and the airtight plug (304) is matched with the sealing ring.
9. The C-wave generating device for aircraft lightning tests according to claim 8, wherein the bottom end of the external connection plug (4) is connected with a metal conductive piece (401), an electric wire (402) is arranged in the external connection plug (4), one end of the electric wire (402) is connected with the metal conductive piece (401), and the other end of the electric wire extends to the outside of the external connection plug (4).
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| JP2010054440A (en) * | 2008-08-29 | 2010-03-11 | Takayasu Kanemura | Method for inspecting on-site surge current discharge experiment to equipotential connection and basic pile grounded plate, discharge testing device, and discharge monitoring method |
| JP5611120B2 (en) * | 2011-05-23 | 2014-10-22 | 三菱航空機株式会社 | Lightning strike test apparatus, lightning strike test system, and lightning strike test method |
| JP6789143B2 (en) * | 2017-02-02 | 2020-11-25 | 株式会社Ｓｕｂａｒｕ | Lightning detection system, lightning detection method and aircraft |
| CN112769334B (en) * | 2021-01-07 | 2022-06-07 | 苏州浪潮智能科技有限公司 | Control circuit of power supply circuit and power supply circuit |
| CN114779020A (en) * | 2022-03-28 | 2022-07-22 | 中国商用飞机有限责任公司 | System and method for verifying lightning protection design of aircraft fuel tank |
| CN114509635B (en) * | 2022-04-18 | 2022-07-05 | 合肥航太电物理技术有限公司 | Airplane lightning test strong current continuous wave generating device |
| CN115694203B (en) * | 2022-11-17 | 2023-08-04 | 深圳市迪威电气有限公司 | DC isolated converter capable of bidirectional conversion and control method thereof |
| CN115765514B (en) * | 2022-11-17 | 2023-08-11 | 深圳市迪威电气有限公司 | Bidirectional-conversion three-phase isolated converter and control method thereof |
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