CN110149106A - A kind of pulse-modulator - Google Patents
A kind of pulse-modulator Download PDFInfo
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- CN110149106A CN110149106A CN201910375231.3A CN201910375231A CN110149106A CN 110149106 A CN110149106 A CN 110149106A CN 201910375231 A CN201910375231 A CN 201910375231A CN 110149106 A CN110149106 A CN 110149106A
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- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
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- 238000009413 insulation Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
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- 210000001367 artery Anatomy 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 claims description 3
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- 241001270131 Agaricus moelleri Species 0.000 description 1
- 208000032365 Electromagnetic interference Diseases 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/011—Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
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Abstract
The present invention provides a kind of pulse-modulators, including an oil cylinder cabinet, the oil cylinder cabinet is externally provided with a capacitor charging power, the primary coil of the pulse forming network and pulse transformer that are sequentially connected by a leader cable and the capacitor charging power is equipped in the oil cylinder cabinet, the trigger circuit that leader cable between the capacitor charging power and pulse forming network is located at the oil cylinder box house with one is connected, the secondary coil of the pulse transformer is connected with a load klystron, an external interface box is inserted on the oil cylinder cabinet, the part of external interface box insertion oil cylinder cabinet is connected with the trigger circuit.Pulse forming network, pulse transformer, klystron etc. are all mounted in the closed oil cylinder equipped with insulating oil by pulse-modulator of the invention, make its volume compact；And designed using integrated oil cylinder, it is swapped only by external interface box with outer signals, therefore EMI performance is good.
Description
Technical field
The present invention relates to linear accelerator technical field of pulse power, and in particular to a kind of pulse-modulator.
Background technique
The microwave power source system of linear accelerator is made of klystron and pulse-modulator.Microwave power source system is
The commercial power of 50Hz continuous low power is converted to the microwave electromagnetic field of high power pulsed ion beams.Fig. 1 is existing linear accelerator
The high-voltage pulse signal that pulse-modulator exports is modulated to microwave electromagnetic by the functional block diagram of microwave power source system, klystron
, charged particle is then accelerated by waveguide and coupling device feed-in accelerating structure.
Fig. 2 is the structural schematic diagram of existing electron linear accelerator microwave power source system.Mainly by pulse-modulator
201, klystron 202, energy doubler 203 and accelerating tube 204 form.Pulse-modulator 201 is located at in-oil cylinder arteries and veins by one
It rushes transformer 205 and provides a high-voltage pulse signal as its input note voltage to klystron 202.Klystron 202 is by low-power
Microwave is modulated into High-Power Microwave.The High-Power Microwave of klystron output further passes through the rear feed of 203 multiplication of energy doubler
Enter accelerating tube and provides power to the electronics in accelerating tube 204.
Wherein, linear accelerator accelerated particle is realized by High-Power Microwave, the microwave power source of linear accelerator
It is made of pulse-modulator 201 and klystron 202.Therefore, the stability of 201 voltage pulse output of pulse-modulator is direct
The stability of microwave power is influenced, and then influences the quality of beam of accelerated particle.
Oil cylinder where pulse-modulator 201 in the prior art and pulse transformer 205 is two parts separated, two
Person needs by the Y connection of high-voltage transmission cable, as shown in Figure 2.It is this that pulse-modulator is divided into two-part design scheme increasing
The electrical connection interface between each section is added, this reduces the EMI performances of system.And this design scheme makes arteries and veins
Pulse modulator it is sufficiently bulky, should not be used in the isometric compact place of subterranean tunnel.In addition, for linear accelerator, energy
Measuring stability is an important technical indicator.The repetition stability of pulse-modulator output high pressure directly affects microwave power source
Stability so that influence linear accelerator electron beam energy stability.High voltage pulse modulator transformer secondary output high pressure reaches
Hundreds of kilovolts, this proposes high request to the technological design of pulse-modulator.And the high voltage of pulse-modulator can generate simultaneously
Strong electromagnetic interference, these electromagnetic interferences influence whether power-supply system, the low-pressure systems such as low level system, and then influence energy
Stability.With the development of accelerator art, to pulse-modulator high stability, small size, the requirement of low EMI leakage is increasingly
It is high.Domestic existing modulator all use work in air and the design method of air-cooled open-air [Zhang Jianhua, still thunder etc.,
The design and research of the high-power line style pulse-modulator of 130MW, radar science and technology], in stability, volume and EMI
Energy etc. still remains defect.
Summary of the invention
The purpose of the present invention is to provide a kind of in-oil cylinder pulse-modulators of compact, to further decrease impulse modulation
The volume of device improves the stability and EMI performance of pulse-modulator.
To achieve the goals above, the present invention provides a kind of pulse-modulator, including an oil cylinder cabinet, the oil cylinder casees
It is equipped with a capacitor charging power in vitro, is equipped in the oil cylinder cabinet and is sequentially connected by a leader cable and the capacitor charging power
Pulse forming network and pulse transformer primary coil, the main electricity between the capacitor charging power and pulse forming network
The trigger circuit that cable is located at the oil cylinder box house with one is connected, the secondary coil of the pulse transformer and a load velocity modulation
Pipe be connected, an external interface box is inserted on the oil cylinder cabinet, the external interface box be inserted into oil cylinder cabinet part with it is described
Trigger circuit is connected.
The pulse forming network is successively composed in parallel by multistage pulsed capacitance, every level-one pulsed capacitance one of them
An inductance is separately connected between electrode and the counter electrode of next stage pulsed capacitance, the both ends of afterbody capacitor are parallel with one
The part of tailbiter circuit, the external interface box insertion oil cylinder cabinet is connected with the tailbiter circuit.
The primary coil of the pulse transformer is grounded, and in parallel with a damping and matching network, the external interface box
The part for being inserted into oil cylinder cabinet is connected with the damping and matching network.
Leader cable between the capacitor charging power and pulse forming network, which is equipped with, is located at the oil cylinder box house
A power protecting circuit, the part of external interface box insertion oil cylinder cabinet is connected with the power protecting circuit.
The power protecting circuit includes the first diode being sequentially arranged on leader cable, first resistor and and leader cable
It is connected and one second diode of one end ground connection, a first capacitor and one the oneth RC filtering is parallel on second diode
Device；The tailbiter circuit includes the third diode being one another in series and second resistance；And the damping and matching network include RC
Filter, the both ends of the RC filter are parallel with the 4th diode being one another in series and 3rd resistor.
The power protecting circuit, ELOC circuit and damping and matching network are all made of protection plate module or multiple protection boards
Block coupled in series forms, and each protection plate module is formed by multiple Diode series on same circuit board are integrated in, and each two
Each equalizing capacitance in parallel and an equalizing resistance in pole pipe.
The external interface box is using N Connector or SMA connector as its outer connecting port.
The trigger circuit includes a high-voltage switch gear thyratron.
It is filled with insulating oil in the oil cylinder cabinet, water-cooled plate and observation window are installed on the side wall of the oil cylinder cabinet,
The water-cooled plate at a distance from the pulse forming network and pulse transformer be at least insulation oil environment under electric insulation away from
From.
The water-cooled plate by the multiple inner surfaces for being fixed on outer layer stainless steel plate of an outer layer stainless steel plate internal layer copper sheet,
The cooling water pipe and be fixed on the internal layer that one fitting is fixed between the outer layer stainless steel plate and the multiple internal layer copper sheet
Cooling fin composition on copper sheet.
Pulse-modulator of the invention is by pulse forming network, pulse transformer, klystron etc. be all mounted on one it is closed
The oil cylinder equipped with insulating oil in, thus by the volume of pulse-modulator can accomplish the half of existing pulse-modulator volume with
Under, volume compact；And designed using integrated oil cylinder, reduce the chance of the outside portion's leakage electromagnetic interference of high pressure cabinet,
It is swapped only by external interface box with outer signals, and the external interface box uses outer connecting port and N Connector
Or SMA connector is as its outer connecting port, therefore EMI performance is good.In addition, the type of cooling of pulse-modulator of the invention
Temperature drift can effectively be improved to pulse-modulator stability by being changed to the cold mode of constant temp cooling water by traditional fan coolling
It influences, therefore the output high pressure repetition stability of pulse-modulator can be significantly improved.
Detailed description of the invention
Fig. 1 is the functional block diagram of existing linear accelerator microwave power source system.
Fig. 2 is the structural schematic diagram of existing electron linear accelerator microwave power source system.
Fig. 3 is the schematic diagram according to the pulse-modulator of one embodiment of the present of invention.
Fig. 4 is the charge waveforms figure of the pulse forming network of pulse-modulator of the invention.
Fig. 5 is the structural schematic diagram of the protection plate module of pulse-modulator as shown in Figure 3.
Fig. 6 is the circuit diagram of protection plate module as shown in Figure 5.
Fig. 7 is the three-dimensional structure diagram of pulse-modulator as shown in Figure 3.
Fig. 8 is the structure chart of the water-cooled plate of pulse-modulator as shown in Figure 3.
Specific embodiment
It is illustrated in figure 3 pulse-modulator according to an embodiment of the invention, it is suitable for CPI companies, the U.S.
VKX-8311, the E37202 of Toshiba Corp, E3730A of Mitsubishi Corporation of Japan etc. high power pulsed klystrons comprising one
Oil cylinder cabinet 101, the oil cylinder cabinet 101 are externally provided with 1 (CCPS, Capacitor charging of a capacitor charging power
Power supply), the oil cylinder cabinet 101 is interior to be filled with insulating oil, and is equipped with electric by a leader cable L and the capacitor charging
The primary coil of pulse forming network 2 (PFN, Pulse Forming Network) and pulse transformer 3 that source 1 is sequentially connected
31, the secondary coil 32 of the pulse transformer 3 is then connected with a load klystron 4, the hot-cathode electric rifle of the load klystron 4
It is partially disposed in oil cylinder cabinet 101, rest part is placed in outside oil cylinder cabinet 101.The capacitor charging power 1 and pulse-shaping net
Leader cable L between network 2 is equipped with the power protecting circuit 5 being located inside oil cylinder cabinet 101, and is located at oil cylinder cabinet with one
Trigger circuit 6 inside 101 is connected.
Capacitor charging power 1 first charges to pulse forming network 2 as a result, and the charging voltage of pulse forming network 2 reaches
Stop charging after setting value, wait to be discharged.One extraneous trigger signal triggers the trigger circuit 6 and is connected, and then controlling should
Pulse forming network 2 discharges.The discharge process of pulse forming network 2 forms one on the primary coil 31 of pulse transformer 3
The high-voltage pulse signal determined by pulse forming network 2 and load klystron 4, the high-voltage pulse signal pass through pulse transformer
Cathode after boosting as load klystron infuses voltage.
Wherein, the primary coil 31 of the pulse transformer 3 is grounded, and in parallel with a damping and matching network 7, for letting out
The remanent magnetism after pulse in transformer is put, realizes the characteristic impedance of pulse forming network 2 and the primary impedance of pulse transformer 3
Match.Since the voltage of pulse transformer primary only has the half of front end charging voltage.So damping and the pressure resistance of matching network 7 are wanted
Seek the half of the charging voltage for capacitor charging power 1.In order to make pulse transformer 3 in the item for meeting fundamental voltage current parameters
Have distribution parameter small as far as possible to obtain better impulse waveform under part, the no-load voltage ratio of pulse transformer 3 be 1:10-1:20 it
Between, it is in the present embodiment 1:19, and the leakage inductance of pulse transformer 3 and distribution capacity are set as small as far as possible.
The trigger circuit 6 includes a high-voltage switch gear thyratron 61 and thyratron auxiliary circuit 62.In order to meet the cold ring of oil
The problem of being used under border, while to meet the requirement of the RMS switch from fluttering of 5ns, which uses hydrogen lock stream
The advantages that pipe has pulse current big, and igniting is rapid, good reliability, the oil injection type CX1836 of model E2V company.Lock stream
Trigger signal is converted into the receptible triggering level signal of high-voltage switch gear thyratron 61, another party by 62 one side of pipe auxiliary circuit
This partial circuit of face plays the role of protecting thyratron.
The pulse forming network (PFN) 2 by multistage pulsed capacitance C1, C2 ..., CN successively compose in parallel, every level-one
Be separately connected between one of electrode of pulsed capacitance Cn and the counter electrode of next stage pulsed capacitance Cn+1 an inductance L2,
L3 ..., LN, in the present embodiment, the series N of pulsed capacitance is 10, n=1,2 ..., 9.In addition, the both ends of afterbody capacitor
Also it is parallel with a truncation (ELOC) circuit 21.
The specific performance indicator of pulse-modulator of the invention is summarized as follows.Wherein, RMS refers to root mean square (Root
Mean Square)。
| Pulse voltage | 420KV | Pulse current | 340A |
| Pulse power | 142MW | Pulse front edge shakes RMS | 5ns |
| Highest repetition rate | 10Hz | Pulse amplitude stability RMS | 300ppm |
| Pulse halfwidth | 3us | Top magnitude@99% | 1us |
In order to realize above-mentioned performance indicator, the pulse forming network 2 of pulse-modulator of the invention uses lump LC parameter
The method of mimic transmission line designs its parameter, the parameter of pulse forming network 2 include pulse forming network 2 characteristic impedance,
The capacitor series of pulse forming network 2, charging voltage of pulse forming network 2 etc..
1) characteristic impedance of pulse forming network 2 is traditionally arranged to be equivalent to pulse change with load (i.e. load klystron 4)
Impedance on the primary coil of depressor 3 matches, therefore the characteristic impedance Z of pulse forming network 2PFNAre as follows:
In formula, VklyFor the pulse voltage for loading klystron 4, unit V, IklyIt is single for the pulse current for loading klystron 4
Position is A, TpulseFor pulse halfwidth, unit s, N are the no-load voltage ratio of pulse transformer.
The inductance value L of each inductance of pulse forming network 2 and the capacitance C of each pulsed capacitance 3 then can be according to PFN
Characteristic impedance ZPFNIt determines, the inductance value L of pulse forming network 2 and the capacitance C of pulsed capacitance meet:
In formula,PFNFor PFN characteristic impedance, unit Ω, L are the inductance value of each inductance of pulse forming network 2, unit
It is the capacitance of each pulsed capacitance of pulse forming network 2, unit F for H, C.
In the present embodiment, the pulse voltage V of klystron 4 is loadedklyFor 420KV, the pulse current I of klystron 4 is loadedkly
For 340A, 3 no-load voltage ratio of pulse transformer is 1:19, N 19, and the characteristic resistance of pulse forming network 2 thus can be found out by formula (1)
Anti- ZPFNFor 3.4 Ω.One group of optional LC parameter: the inductance of each inductance of pulse forming network 2 can determine by formula (2) again
Value L=520nH, and the capacitance C=45nF of each pulsed capacitance of pulse forming network 2.In addition, in other embodiments,
Inductance value L can value range be 50nH-2uH, capacitance C can value range be 20nF-1uF.Inductance of the invention
The selection of the selection of capacitance parameter, especially capacitor combines the inductance capacitance parameter that can be found in the market.
2) the charging voltage V of pulse forming network 2PFNBy Klystron pulse voltage VklyAnd pulse transformer no-load voltage ratio N is determined.
The charging voltage of pulse forming network 2 are as follows:
Wherein, VklyFor the pulse voltage for loading klystron 4, unit V, N are the no-load voltage ratio of pulse transformer.
In the present embodiment, the pulse voltage for loading klystron 4 is 420KV, and transformer voltage ratio 1:19 is calculated
The charging voltage V of pulse forming network 2PFNFor 44.2KV, to select filling for output voltage 0-50KV according to this calculated result
Power supply.
3) the capacitor series of pulse forming network 2 is determined by its total storage capacitor, total storage capacitor of pulse forming network 2
It is determined by pulse halfwidth.Theoretically, total storage capacitor are as follows:
Wherein, VklyFor the pulse voltage for loading klystron 4, unit V, IklyIt is single for the pulse current for loading klystron 4
Position is A, TpulseFor pulse halfwidth, unit s, VPFNFor the charging voltage of pulse forming network 2, unit V.
In the present embodiment, pulse halfwidth TpulseFor 3us, VPFNFor the charging voltage V of pulse forming network 2PFNFor
Thus 44.2KV can obtain C according to formula (4)total=555nF.Rising edge and decline under actual conditions, due to impulse waveform
Along all than very fast, width is evaluated in the pulse that 2.5us can be obtained in the capacitance through 555nF known to the calculating of spice emulation tool.According to
The 1us flat-top width final optimization pass of design requirement is that total capacitance value selects 450nF, i.e. the capacitor series of pulse forming network 2 is
10, each section is made of the capacitor of 45nF and the inductance of 520nH.In addition, in other embodiments, the electricity of pulse forming network 2
The value range for holding series can save for 5-25.
4) the charging current I of obtained capacitor charging power 1 are as follows:
Wherein, CtotalFor total storage capacitor, unit F, VPFNFor the charging voltage of pulse forming network 2, unit V, TC
For charging time, unit s.
Since the charge voltage range of capacitor charging power 1 is 0-50KV, the repetition rate of pulse-modulator is designed as
50Hz, and waiting and the discharge time of 5ms are generally also flowed out, therefore the charging time T of capacitor charging power 1CUp to
15ms, can be calculated charging current I by formula (5) is 1.54A, that is, needs pulse forming network 2 to meet charging current and be not less than
1.33A.Waveform diagram according to the charging voltage for the capacitor charging power 1 being calculated is as shown in Figure 4.
Fig. 3 is referred to again, and power protecting circuit 5 described above, ELOC circuit 21 and damping and matching network 7 are this
The protection circuit of the pulse-modulator of invention.In one embodiment, power protecting circuit 5 includes being sequentially arranged on leader cable L
First diode 51, first resistor 52 and be connected with leader cable and one end ground connection one second diode 53, described second
It is parallel with a first capacitor 54 and one the oneth RC filter 55 on diode 53, is used for capacitor charging power 1, resistance to pressure request
At least 50kV；The tailbiter circuit 21 includes the third diode 211 being one another in series and second resistance 212, and resistance to pressure request is extremely
It is less 50kV；And damping and matching network 7 include RC filter 71, the both ends of the RC filter 71 are parallel with the to be one another in series
Four diodes 72 and 3rd resistor 73, resistance to pressure request are at least 25kV.
As shown in Figure 5 and Figure 6, in another embodiment, the knot of remaining all parts of pulse-modulator of the invention
Structure is all the same, be intended merely to design uniformity and replacement convenience, power protecting circuit 5, ELOC circuit 21 and damping and
A protection plate module 700 is respectively adopted in matching network 7 or multiple protection plate modules 700 are connected in series.Each protection plate module
700 are connected in series by multiple diodes 701 on same circuit board are integrated in, and each equalizing capacitance in parallel on each diode
702 and one equalizing resistance 703 to realize voltage equalizing protection.Wherein, the quantity of diode 701 is 30, and the pressure resistance of diode 701
For 1700V, model DSA17-18A, so that protection plate module 700 has the pressure resistance of 50kV；The capacitor of equalizing capacitance 702
Value is 0.33uF；And the resistance value of equalizing resistance 703 is 5M Ω.In view of protecting the redundancy of circuit, resistance to pressure request is at least 50kV
Power protecting circuit 5 and ELOC circuit 21 using two with 50kV pressure resistance protection plate modules 700 be connected in series, pressure resistance
It is required that the damping of at least 25kV and matching network 7 use the protection plate module 700 of a 50kV.
Fig. 7 is the three-dimensional structure diagram of pulse-modulator as shown in Figure 3.It is equipped on the side wall of the oil cylinder cabinet 101
Water-cooled plate 102 and observation window 103, observation window 103 are used to observe the inside for being possible to occur in the pulse-modulator operational process
Failure, such as strike sparks, device failure etc..Wherein, water-cooled plate 102 is located at the left and right sides of oil cylinder cabinet 101, is respectively used to this hair
The heat dissipation of the pulse forming network 2 and pulse transformer 3 of bright pulse-modulator.Water-cooled plate 102 and pulse described above at
The distance of type network 2 and pulse transformer 3 is at least the electric insulation distance to insulate under oil environment.In addition, water-cooled plate 102 is also protected
The temperature change for having demonstrate,proved 101 interior insulation of oil cylinder cabinet oil and all parts is not too large, this is conducive to pulse-modulator of the present invention
The improvement of performance can especially improve the problem of the difference of the stability due to caused by temperature.In addition, being inserted with one on oil cylinder cabinet 101
External interface box 104 using N Connector or SMA connector as its outer connecting port, for inside and outside oil cylinder cabinet 101
Signal exchange.The external interface box 104 is inserted into part and the power protecting circuit 5 described above, truncation of oil cylinder cabinet 101
The secondary of circuit 21, damping and matching network 7, trigger circuit 6 and pulse transformer 3 is respectively connected with.It receives power protection electricity
The current monitor signal for (in one embodiment, flowing through diode 53) in road 5, the current monitor signal of tailbiter circuit 21, resistance
The current monitor signal for (in one embodiment, flowing through diode 72) in Buddhist nun and matching network 7, is supervised by above three electric current
It surveys signal and is used for interlock protection, while it issues input trigger signal to trigger circuit 6, for triggering thyratron conducting electric discharge,
And the secondary Current Voltage monitoring signals of pulse transformer 3 are received, it is used for external observation pulse voltage and electric current.
The specific structure of water-cooled plate 102 as shown in figure 8, water-cooled plate 102 by an outer layer stainless steel plate 1021, it is multiple to pass through spiral shell
The outer layer stainless steel plate is fixed in the fitting of internal layer copper sheet 1022, one that bolt is fixed on the inner surface of outer layer stainless steel plate 1021
Cooling water pipe 1023 between 1021 and the multiple internal layer copper sheet 1022 and be fixed on internal layer copper sheet 1022 for increasing
The cooling fin (not shown) of heat dissipation area forms.Wherein, cooling water pipe 1023 and cooling fin pass through soldering and the internal layer copper sheet
1022 are fixedly connected.In addition, the peripheral region of the inner surface of outer layer stainless steel plate 1021 is additionally provided with sealing ring 1024.
Therefore, it is big to solve high voltage pulse modulator volume with pulse-modulator of the invention, and it is not high to repeat stability, EMI
The big problem of noise.It is specifically exactly half of the volume less than existing design, repetition stability is better than 300ppm.It is this novel
The characteristics of pulse-modulator volume compact, can reduce equipment and be taken up space, to save cost.The good feature of stability is special
Suitable for the demanding occasion of quality of beam, such as free-electron laser device, synchrotron radiation light source device and electro-medical
Sub- linear accelerator device.
Above-described, only presently preferred embodiments of the present invention, the range being not intended to limit the invention, of the invention is upper
Stating embodiment can also make a variety of changes.Made by i.e. all claims applied according to the present invention and description
Simply, equivalent changes and modifications fall within the claims of the invention patent.The not detailed description of the present invention is
Routine techniques content.
Claims (10)
1. a kind of pulse-modulator, which is characterized in that including an oil cylinder cabinet (101), the oil cylinder cabinet (101) is externally provided with one
Capacitor charging power (1), interior be equipped with of the oil cylinder cabinet (101) pass through a leader cable (L) and the capacitor charging power (1) successively
The primary coil (31) of connected pulse forming network (2) and pulse transformer (3), the capacitor charging power (1) and pulse
Leader cable (L) between molding network (2) is located at the internal trigger circuit (6) of the oil cylinder cabinet (101) with one and is connected, should
The secondary coil (32) of pulse transformer (3) is connected with load klystron (4), is inserted with one on the oil cylinder cabinet (101)
External interface box (104), the external interface box (104) are inserted into part and the trigger circuit (6) phase of oil cylinder cabinet (101)
Even.
2. pulse-modulator according to claim 1, which is characterized in that the pulse forming network (2) is by multistage arteries and veins
It rushes capacitor successively to compose in parallel, between one of electrode of every level-one pulsed capacitance and the counter electrode of next stage pulsed capacitance
It is separately connected an inductance, the both ends of afterbody capacitor are parallel with a tailbiter circuit (21), and the external interface box (104) is inserted
The part for entering oil cylinder cabinet (101) is connected with the tailbiter circuit (21).
3. pulse-modulator according to claim 2, which is characterized in that the primary coil of the pulse transformer (3)
(31) it is grounded, and in parallel with a damping and matching network (7), the portion of external interface box (104) insertion oil cylinder cabinet (101)
Divide and is connected with the damping and matching network (7).
4. pulse-modulator according to claim 3, which is characterized in that the capacitor charging power (1) and pulse-shaping
Leader cable between network (2), which is equipped with, is located at the internal power protecting circuit (5) of the oil cylinder cabinet (101), described right
The part of external tapping box (104) insertion oil cylinder cabinet (101) is connected with the power protecting circuit (5).
5. pulse-modulator according to claim 4, which is characterized in that the power protecting circuit (5) includes successively setting
In on leader cable (L) first diode (51), first resistor (52) and be connected with leader cable and one end ground connection one second
Diode (53) is parallel with mono- RC filter (55) of a first capacitor (54) He Yi on second diode (53)；It is described
Tailbiter circuit (21) includes the third diode (211) being one another in series and second resistance (212)；And the damping and matching network
It (7) include RC filter (71), the both ends of the RC filter (71) are parallel with the 4th diode (72) being one another in series and third
Resistance (73).
6. pulse-modulator according to claim 4, which is characterized in that the power protecting circuit (5), ELOC circuit
(21) and damping and matching network (7) be all made of protection plate module (700) or multiple protection plate modules (700) be connected in series, often
A protection plate module (700) is connected in series by multiple diodes (701) on same circuit board are integrated in, and each diode
(701) each equalizing capacitance (702) in parallel and an equalizing resistance (703) on.
7. pulse-modulator according to claim 1, which is characterized in that the external interface box (104) is connected using N-type
Device or SMA connector are as its outer connecting port.
8. pulse-modulator according to claim 1, which is characterized in that the trigger circuit (6) includes a high-voltage switch gear
Thyratron (61).
9. pulse-modulator according to claim 1, which is characterized in that filled with insulation in the oil cylinder cabinet (101)
Oil, is equipped with water-cooled plate (102) and observation window (103) on the side wall of the oil cylinder cabinet (101), the water-cooled plate (102) with
The distance of the pulse forming network (2) and pulse transformer (3) is at least the electric insulation distance to insulate under oil environment.
10. pulse-modulator according to claim 9, which is characterized in that the water-cooled plate (102) is by an outer layer stainless steel
Plate (1021), internal layer copper sheet (1022), a fitting on multiple inner surfaces for being fixed on outer layer stainless steel plate (1021) are fixed on
Cooling water pipe (1023) between the outer layer stainless steel plate (1021) and the multiple internal layer copper sheet (1022) and it is fixed on institute
State the cooling fin composition on internal layer copper sheet (1022).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111192804A (en) * | 2020-02-14 | 2020-05-22 | 中国电子科技集团公司第十四研究所 | High-power microwave generation device and method |
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| CN209823723U (en) * | 2019-05-07 | 2019-12-20 | 中国科学院上海应用物理研究所 | Pulse modulator |
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