A pulse sharpening device for a high voltage trigger source

Abstract

The application relates to a pulse steepening device for a pulse power device, in particular to a pulse steepening device for a high-voltage trigger source, and solves the technical problems that the existing pulse steepening device is difficult to be applied to a high-voltage trigger source of hundreds of kilovolts, and the structure is loose and is not conducive to the generation of a fast-front trigger electric pulse. The pulse steepening device for the high-voltage trigger source comprises a ring-shaped contact conductor, a shell, a umbrella-shaped connecting conductor arranged in the shell, N capacitor connecting pieces, a fixed insulator, N pulse steepening capacitors and a gas steepening switch, N is a positive integer greater than or equal to 3; the shell is coaxially arranged with the ring-shaped contact conductor, the umbrella-shaped connecting conductor and the fixed insulator; the other end of the ring-shaped contact conductor is used for being connected with an output end of an external high-voltage trigger source; the output end of the umbrella-shaped connecting conductor is connected with the gas steepening switch, and is used for triggering the gas steepening switch to break down and conduct, so that the gas steepening switch outputs a fast-front trigger electric pulse.

Description

TECHNICAL FIELD

[0001] The present application relates to a pulse steepening device for a pulse power device, in particular to a pulse steepening device for a high-voltage trigger source. BACKGROUND

[0002] A high-power gas switch is a key component for controlling the release of electrical energy in a pulse power device. In order to achieve stable and controlled conduction of the gas switch, a high-amplitude and fast-front trigger electric pulse generated by a high-voltage trigger source is needed to trigger the gas switch. The commonly used high-voltage trigger sources include Marx generator type trigger sources and pulse transformer type trigger sources. Although these two types of trigger sources can generate high-amplitude trigger electric pulses, the front of the generated trigger electric pulse is relatively slow, which is not conducive to low jitter and stable triggering conduction of the gas switch.

[0003] In order to obtain a high-amplitude and fast-front trigger electric pulse, a common solution is to add a pulse steepening device at the back end of the high-voltage trigger source. Li Dengyun et al. introduced a "pulse steepening device" in the article "Steepening of Output Pulse of 100kV Trigger" (High Voltage Technology, June 2008, Vol. 34, No. 06, pp. 1255-1260). By adding a steepening capacitor and a gas steepening switch at the output end of the trigger source, the front of the 90kV electric pulse is reduced from 20ns to 2.3ns. Liu Yi et al. in the article "Resonant Charging Characteristics of Core Type Pulse Transformer" (Proceedings of the CSEE, January 2012, Vol. 32, No. 1, pp. 0186-0192), by adding a steepening capacitor and a three-electrode self-triggering type steepening switch at the back end of the pulse transformer type high-voltage trigger source, a trigger electric pulse with a voltage peak of 123kV and a pulse front of about 23ns can be generated after steepening. The above two pulse steepening devices can effectively shorten the front of the electric pulse, but have the following shortcomings: 1. The above two pulse steepening devices are limited by the working voltage and withstand voltage level of the steepening capacitor and the steepening switch, so that the device can only output a trigger pulse of about one hundred kilovolts, which is difficult to apply to high-voltage trigger sources of several hundred kilovolts; 2. The above two devices use a single steepening capacitor, without using multiple steepening capacitors in parallel, so that the inductance of the steepening capacitor itself is large, and the overall structure of the device is loose, which is not conducive to the generation of fast-front trigger electric pulses. SUMMARY

[0004] The purpose of the present application is to solve the technical problems that the existing pulse steepening device is difficult to apply to high-voltage trigger sources of several hundred kilovolts, and the structure is loose, which is not conducive to the generation of fast-front trigger electric pulses, and to provide a pulse steepening device for a high-voltage trigger source, which can generate a trigger electric pulse with a high amplitude of several hundred kilovolts and a fast front.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is:

[0006] The application discloses a pulse steepening device for a high-voltage trigger source, which is characterized by comprising a ring-shaped contact conductor, a shell, an umbrella-shaped connecting conductor arranged in the shell, N capacitor connecting pieces, a fixed insulator, N pulse steepening capacitors and a gas steepening switch, wherein N is a positive integer greater than or equal to 3.

[0007] The shell is coaxially arranged with the ring-shaped contact conductor, the umbrella-shaped connecting conductor and the fixed insulator.

[0008] One end of the ring-shaped contact conductor is connected with one end of the N capacitor connecting pieces through N pulse transmission connecting pieces, and the N pulse transmission connecting pieces are all connected with an input end of the umbrella-shaped connecting conductor; the other end of the ring-shaped contact conductor is used for being connected with an output end of an external high-voltage trigger source.

[0009] The fixed insulator is provided with a first through hole in the axial direction and N second through holes in the circumferential direction of the first through hole.

[0010] The second through holes comprise large holes and small holes which are communicated; the N pulse steepening capacitors are respectively arranged in the N large holes, and output ends of the N pulse steepening capacitors are respectively grounded through N capacitor grounding bodies.

[0011] The other ends of the N capacitor connecting pieces are respectively connected with input ends of the corresponding N pulse steepening capacitors through the N small holes.

[0012] The umbrella-shaped connecting conductor is arranged in the first through hole, and an output end of the umbrella-shaped connecting conductor is connected with the gas steepening switch, so as to trigger the gas steepening switch to break down and conduct, and make the gas steepening switch output a fast-front trigger electric pulse.

[0013] Further, the umbrella-shaped connecting conductor comprises N split claws and a conduction part.

[0014] The N split claws are all L-shaped structures, one end of each split claw is arranged outside the first through hole and connected with one end of the ring-shaped contact conductor through a corresponding pulse transmission connecting piece, and the other end of each split claw is fixedly connected with one end of the conduction part.

[0015] The other end of the conduction part is connected with the gas steepening switch.

[0016] Further, the capacitor grounding body comprises a grounding base, a grounding movable head arranged in the grounding base and a spring.

[0017] The grounding base is a cylindrical structure, and the fourth through hole is arranged on the grounding base in the axial direction; one end of the grounding base is connected with the output end of the N pulse steepening capacitors through the grounding connecting piece; the inner wall of the other end port of the grounding base is provided with a first annular boss; the grounding movable head is a cylindrical structure provided with a second blind hole, and the opening end of the second blind hole faces the grounding connecting piece; a second annular boss matched with the first annular boss is arranged on the outer wall of the second blind hole of the grounding movable head.

[0018] The spring is located in the second blind hole, and one end of the spring abuts against the grounding connecting piece, and the other end of the spring abuts against the inner end of the second blind hole.

[0019] Further, a support insulator matched with the fixed insulator is further included;

[0020] The support insulator includes an annular body and N fixed wedges arranged on the annular body;

[0021] The inner part of the annular body is in communication with the first through hole;

[0022] The large hole of the second through hole is a trapezoidal groove, the groove bottom surface of the trapezoidal groove is in communication with the small hole, and the groove bottom surface of the trapezoidal groove has an included angle with the radial plane; one side wall of the pulse steepening capacitor is in contact with the inner wall of the trapezoidal groove away from the axis;

[0023] The fixed wedge is a wedge-shaped prism structure, the fixed wedge is located in the corresponding trapezoidal groove, and the inner side surface of the fixed wedge abuts against the inner wall of the trapezoidal groove close to the axis, and the outer side surface abuts against the other outer side wall of the pulse steepening capacitor, for supporting and fixing the pulse steepening capacitor.

[0024] Further, the shell includes a first shell and a second shell; the first shell and the second shell are connected through a flange;

[0025] The front end of the first shell is provided with a through hole matched with the annular contact conductor.

[0026] Further, a first positioning ring is arranged on the inner wall of the first shell;

[0027] A second positioning ring corresponding in position to the first positioning ring is arranged on the inner wall of the second shell;

[0028] The fixed insulator is located between the first positioning ring and the second positioning ring, and the first positioning ring and the second positioning ring are used for positioning the fixed insulator.

[0029] Further, the included angle between the groove bottom surface of the trapezoidal groove and the radial plane is 15-20 degrees;

[0030] The wedge angle of the fixed wedge is 15-20 degrees.

[0031] Further, the material of the annular contact conductor is a light-weight ablation-resistant metal.

[0032] The material of the pulse transmission connecting piece and the umbrella-shaped connecting conductor is a light-weight metal.

[0033] The pulse steepening capacitor is a plastic shell double-end lead-out pulse capacitor, and the cores inside the pulse steepening capacitor are stacked and arranged along the direction of the long side of the pulse steepening capacitor.

[0034] The material of the ground connecting piece, the ground base and the ground movable head is an ablation-resistant metal.

[0035] Further, the material of the first shell and the second shell is stainless steel.

[0036] The annular contact conductor adopts a titanium alloy annular contact conductor.

[0037] The material of the pulse transmission connecting piece is an aluminum alloy.

[0038] The umbrella-shaped connecting conductor adopts an aluminum alloy umbrella-shaped connecting conductor.

[0039] The capacitor connecting piece adopts an aluminum alloy.

[0040] The material of the fixed insulator is nylon or polyethylene.

[0041] The material of the ground connecting piece, the ground base and the ground movable head is tungsten-copper alloy or copper-chromium alloy.

[0042] The material of the spring is phosphor bronze.

[0043] The gas steepening switch is a two-electrode self-breakdown switch, the electrode material is graphite, and the electric field inhomogeneity coefficient of the gap is 3-3.5.

[0044] Further, the value of N is six.

[0045] Compared with the prior art, the beneficial effects of the technical scheme of the present application are:

[0046] 1. The pulse steepening device for a high-voltage trigger source can effectively reduce inductance through the pulse transmission connecting piece, the umbrella-shaped connecting conductor, the capacitor connecting piece, the fixed insulator, the pulse steepening capacitor and the capacitor ground body, so that the pulse front after steepening is faster.

[0047] 2. The pulse steepening device for a high-voltage trigger source is compact in structure and small in size, and the annular contact conductor, the fixed insulator and the cylindrical shell form a coaxial structure, which can further reduce structural inductance.

[0048] 3. The pulse steepening device for a high-voltage trigger source has high voltage resistance of the pulse steepening capacitor and the gas steepening switch, and can be used for steepening high-amplitude trigger pulses of hundreds of kilovolts.

[0049] 4. The pulse steepening device of the present invention for high voltage triggering source can fix the pulse steepening capacitor in a fixed insulator without loosening, which helps to prevent the connection from becoming loose during the movement and vibration of the device. At the same time, the number of pulse steepening capacitors in the present invention can be easily increased or decreased, which is beneficial to generating steepening pulses of different waveforms. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the pulse steepening device for a high-voltage trigger source according to the present invention;

[0051] Figure 2 This is a schematic diagram of the umbrella-shaped connecting conductor structure in an embodiment of the pulse steepening device for a high-voltage trigger source according to the present invention;

[0052] Figure 3 This is a schematic diagram of the fixed insulator structure in an embodiment of the pulse steepening device for a high-voltage triggering source of the present invention;

[0053] Figure 4 This is a schematic diagram of the supporting insulator structure in an embodiment of the pulse steepening device for a high-voltage trigger source of the present invention;

[0054] Figure 5 This is a schematic diagram of the capacitor grounding body structure in an embodiment of the pulse steepening device for a high-voltage triggering source according to the present invention.

[0055] The attached figures are labeled as follows:

[0056] 1-Outer shell, 101-First shell, 102-Second shell, 103-First positioning ring, 104-Second positioning ring, 2-Annular contact conductor, 3-Pulse transmission connecting piece, 4-Umbrella-shaped connecting conductor, 401-Split claw, 402-Conducting component, 5-Capacitor connecting piece, 6-Fixing insulator, 601-First through hole, 602-Second through hole, 7-Supporting insulator, 701-Annular body, 702-Fixing wedge, 8-Pulse steepening capacitor, 9-Capacitor grounding body, 901-Grounding connecting piece, 902-Grounding base, 903-Grounding movable head, 904-Spring, 905-Fourth through hole, 906-First annular boss, 907-Second annular boss, 10-Gas steepening switch. Detailed Implementation

[0057] like Figure 1 As shown, a pulse steepening device for a high-voltage trigger source comprises a housing 1, an annular contact conductor 2, a pulse transmission connecting piece 3, an umbrella-shaped connecting conductor 4, a capacitor connecting piece 5, a fixed insulator 6, a supporting insulator 7, a pulse steepening capacitor 8, a capacitor grounding body 9, and a gas steepening switch 10. The housing 1 is coaxially arranged with the annular contact conductor 2 and the fixed insulator 6.

[0058] The outer casing 1 consists of a first casing 101 and a second casing 102. Both the first casing 101 and the second casing 102 are cylindrical metal casings, and both ends of the first casing 101 and the second casing 102 are provided with flanges. The flanges are connected by screws to realize the connection between the first casing 101 and the second casing 102. The length of the first casing 101 is 150mm, and the length of the second casing 102 is 320mm. The inner diameter of both the first casing 101 and the second casing 102 is 680mm, and the outer diameter is 700mm. Both are made of stainless steel, and the outer diameter of the flanges is 760mm. A first positioning ring 102 is welded inside the first casing 101, and a second positioning ring 104 is also welded inside the second casing 102. The inner diameter of both the first positioning ring 101 and the second positioning ring 102 is 660mm, and the outer diameter is 680mm. The distance between the end of the first positioning ring 103 and the end of the first casing 101 is 85mm. The fixed insulator 6 is fixed between the first positioning ring 101 and the second positioning ring 102 inside the first housing 101 and the second housing 102. The first positioning ring 103 and the second positioning ring 104 are used to position the fixed insulator 6. Preferably, the first housing 101 and the second housing 102 are both made of stainless steel.

[0059] The annular contact conductor 2 is ring-shaped, with an inner diameter of 350 mm, an outer diameter of 200 mm, and a thickness of 20 mm. It is made of a lightweight, ablation-resistant metal, preferably titanium alloy. It serves as the input terminal of the pulse ablation device. One end of the annular contact conductor 2 is connected to one end of the pulse transmission connecting piece 3, and the other end is connected to the output terminal of an external high-voltage trigger source. There are six pulse transmission connecting pieces 3, arranged radially at equal intervals. Multiple screw holes are provided on the end face where the annular contact conductor 2 connects to the pulse transmission connecting pieces 3, with the number of screw holes matching the number of pulse transmission connecting pieces 3. In this embodiment, six 6 mm diameter through holes are provided on the end face where the annular contact conductor 2 connects to the pulse transmission connecting pieces 3.

[0060] The pulse transmission connecting piece 3 is a U-shaped folded piece, with six pieces in total. These six pulse transmission connecting pieces 3 are arranged radially in parallel, with one end connected to the annular contact conductor 2 and the other end connected to the umbrella-shaped connecting conductor 4 and the capacitor connecting piece 5. The overall length of the pulse transmission connecting piece 3 (i.e., the distance between the opposite and close surfaces of the annular contact conductor 2 and the umbrella-shaped connecting conductor 4) is 130 mm, and its thickness is 4.5 mm. Each end has a 6 mm diameter through hole. The pulse transmission connecting piece 3 is made of aluminum alloy. The number of pulse transmission connecting pieces corresponds to the number of split claws on the umbrella-shaped connecting conductor.

[0061] like Figure 2As shown in the figure, the umbrella-shaped connecting conductor 4 is located inside the first through hole 601, including 6 split claws 401 and a conducting part 402; the 6 split claws 401 are all L-shaped structures, one end of each split claw 401 is located outside the first through hole 601, and one end of each split claw 401 is connected with one end of the annular contact conductor 2 through the pulse transmission connecting piece 3 respectively, the other end of each split claw 401 is fixedly connected with one end of the conducting part 402 respectively; the conducting part 402 is a cylindrical structure provided with a first blind hole, the other end of the conducting part 402 is connected with the gas steepening switch 10, used for triggering the gas steepening switch 10. In the embodiment, the inner diameter of the conducting part 402 is 75 mm, the outer diameter is 85 mm, and a 6 mm diameter circular through hole is arranged at the end; a 6 mm diameter circular through hole is arranged at the end of the 6 split claws 401. The overall length of the umbrella-shaped connecting conductor 4 (i.e. the height of the umbrella-shaped connecting conductor 4) is 225 mm, and the material used is lightweight metal, preferably aluminum alloy.

[0062] The capacitor connecting piece 5 is a folded piece, the number of the capacitor connecting piece 5 used is consistent with the number of the split claws 401 of the umbrella-shaped connecting conductor 4, and the surface has two bending parts with angles of 115 degrees and 90 degrees respectively, and both ends are provided with a 6 mm diameter circular through hole. The capacitor connecting piece 5 has six pieces, one end of each capacitor connecting piece 5 is connected with one pulse transmission connecting piece 3 and one split claw 401 of the umbrella-shaped connecting conductor 4 at the same place through screws, and the other end is connected with the input end of the corresponding pulse steepening capacitor 8 through screws. The length of the capacitor connecting piece 5 after being straightened is 110 mm, and the material used is aluminum alloy.

[0063] As shown in the figure, Figure 3 As shown in the figure, the fixed insulator 6 is provided with an axial first through hole 601 and six second through holes 602; the second through hole 602 includes a large hole and a small hole; the inner side wall of the large hole is matched with the outer side wall of the pulse steepening capacitor 8; the fixed insulator 6 is a ring cylinder, and six trapezoidal grooves (i.e. large holes) are distributed at equal intervals along the circular direction, used for placing the pulse steepening capacitor 8. The width of the trapezoidal groove is 150 mm, and the angle between the bottom surface of the trapezoidal groove and the radial plane is 18 degrees. The bottom of each trapezoidal groove has a 50 mm diameter circular through hole (i.e. small hole) for passing through the capacitor connecting piece 5. Two M15 threaded through holes are arranged between every two trapezoidal grooves for fixedly connecting the supporting insulator 7. The inner diameter of the fixed insulator 6 is 210 mm, the outer diameter is 680 mm, the thickness is 260 mm, the material is nylon, and polyethylene can also be used.

[0064] The support insulator 7 comprises a ring body 701, a third through hole arranged in the axial direction, and six fixed wedges 702 arranged on the ring body; the support insulator 7 is matched with the fixed insulator 6, and the third through hole is through the first through hole 601; the fixed wedge 702 is a wedge-shaped prism structure, and the wedge angle is 18 degrees. The outer side wall of the fixed wedge 702 is matched with the outer side wall of the pulse steepening capacitor 8. As shown in Figure 4 The support insulator 7 is a ring petal shape, and six triangular protrusions are distributed at equal intervals along the ring direction on the inner side of the ring. The number of triangular protrusions is the same as the number of trapezoidal grooves; the edge angle of the fixed wedge 702 is 18 degrees, the edge angle tip is a round angle R25mm, and the protrusion width is 148mm. Six fan-shaped structures are arranged on the outer side of the ring, and two through holes with a diameter of 16mm are arranged on each fan-shaped structure. Each triangular protrusion of the support insulator 7 is inserted into one trapezoidal groove of the fixed insulator 6, and a rectangular hole is formed therefrom. Twelve nylon screws pass through the through holes on the outer side of the ring of the support insulator 7 and the threaded through holes between the trapezoidal grooves of the fixed insulator 6 in sequence, so that the pulse steepening capacitor 8 can be fastened in the rectangular hole. The inner diameter of the support insulator 7 is 210mm, the outer diameter is 350mm, the thickness is 150mm, and the material is nylon.

[0065] The pulse steepening capacitor 8 is a plastic shell double-ended pulse capacitor. The cores inside the pulse steepening capacitor 8 are arranged in the direction of the long side of the pulse steepening capacitor 8, and there are six cores in total. Each pulse steepening capacitor 8 is located in one of the six large holes, and the output end is connected to a capacitor grounding body 9. The pulse steepening capacitor 8 has a capacitance of 1nF, a length of 250mm, a width of 150mm, and a height of 100mm.

[0066] As shown in Figure 5 The capacitor grounding body 9 comprises a grounding base 902, a grounding movable head 903 arranged inside the grounding base 902, and a spring 904. The grounding base 902 is a cylindrical structure, and the fourth through hole 905 is arranged in the axial direction. One end of the grounding base 902 is connected to the output end of the six pulse steepening capacitors 8 through the grounding connecting piece 901. The other end of the grounding base 902 is provided with a first annular boss 906 on the inner wall of the port, which is used to block the grounding movable head 903. The inner diameter of the first annular boss 906 is 16mm. The grounding movable head 903 is a cylindrical structure provided with a second blind hole. The port outer wall of the grounding movable head 903 close to the grounding connecting piece 901 is provided with a second annular boss 907 matched with the first annular boss 906. The spring 904 is located inside the second blind hole, and one end of the spring 904 abuts against the surface where the grounding connecting piece 901 and the grounding base 902 are connected. The other end of the spring 904 abuts against the blind end inside the second blind hole.

[0067] The ground connecting sheet 901 is a "few" sheet-shaped structure, and has two bending surfaces on the surface, and the angles of the two bending surfaces are 115 degrees and 90 degrees respectively. One end of the ground connecting sheet 901 is provided with a circular through hole with a diameter of 6 mm and is connected with the output end of the pulse steepening capacitor 8, and the other end is provided with four through holes with a diameter of 6 mm and is connected with the ground base 902. The ground base 902 is a hollow cylindrical structure, and the height is 23 mm, the inner diameter is 20 mm, and the outer diameter is 36 mm. The ground base 902 is provided with four M5 threaded holes at one end and is connected with the through holes of the ground connecting sheet 901 through screws. The ground base 902 is internally provided with a ground movable head 903 and a spring 904. The ground movable head 903 is a cylindrical structure, and the height is 25 mm, the inner diameter is 10 mm, and the outer diameter is 16 mm. The ground movable head 903 is provided with a circular convex ring with an outer diameter of 18 mm on the outer wall of the port close to the ground connecting sheet 901, which cooperates with the first annular boss 906, so that the movable stroke does not exceed the rear end of the ground base 902. The spring 904 has a diameter of 9 mm and a length of 35 mm, and is made of phosphor bronze. The materials of the ground connecting sheet 901, the ground base 902 and the ground movable head 903 are tungsten-copper alloy.

[0068] In the embodiment, the front end of the first shell 101 is provided with a through hole matched with the annular contact conductor 2. The second shell 102 is isometrically welded with a ground sheet. The ground sheet can be six radially arranged fan-shaped ground sheets, and the six ground sheets are located in the same vertical plane (and can also be annular ground sheets). The distance from the end of the ground sheet to the end of the second shell 102 is 40 mm.

[0069] The selected gas steepening switch 10 is a two-electrode self-breakdown gas steepening switch. The electrode material of the gas steepening switch 10 is high-performance graphite with an average particle size of microns. The electric field inhomogeneity coefficient of the gap of the gas steepening switch 10 is 3.2. One end of the gas steepening switch 10 is connected with the circular through hole at one end of the conducting part through a screw, and the other end is used as the output end of the whole pulse steepening device. The gas steepening switch 10 is mainly used for steepening the pulse front. When the voltage on the pulse steepening capacitor reaches the breakdown voltage of the gas steepening switch 10, the gas steepening switch 10 breaks down and outputs a high-amplitude, fast-front trigger electric pulse.

[0070] The working process of the above embodiment is as follows:

[0071] The external voltage pulse is input to the annular contact conductor 2, and the pulse transmission connecting sheet 3 and the capacitor connecting sheet 5 are used to charge the pulse steepening capacitor 8. When the voltage on the pulse steepening capacitor 8 reaches the breakdown voltage of the gas steepening switch 10, the gas steepening switch 10 is turned on and outputs a fast-front trigger electric pulse.

Claims

1. A pulse steepening device for a high-voltage trigger source, characterized in that, It includes an annular contact conductor (2), a housing (1), an umbrella-shaped connecting conductor (4) disposed inside the housing (1), N capacitor connecting pieces (5), a fixed insulator (6), N pulse steepening capacitors (8), and a gas steepening switch (10), wherein N is a positive integer greater than or equal to 3; The outer shell (1) is coaxially arranged with the annular contact conductor (2), the umbrella-shaped connecting conductor (4) and the fixed insulator (6); One end of the annular contact conductor (2) is connected to one end of N capacitor connecting pieces (5) through N pulse transmission connecting pieces (3), and all N pulse transmission connecting pieces (3) are connected to the input end of the umbrella-shaped connecting conductor (4); the other end of the annular contact conductor (2) is used to connect to the output end of an external high-voltage trigger source; The fixed insulator (6) is provided with a first through hole (601) along the axial direction, and N second through holes (602) are provided along the circumference of the first through hole (601); The second through hole (602) includes a large hole and a small hole that are connected; the N pulse steepening capacitors (8) are respectively located in the N large holes, and the output terminals of the N pulse steepening capacitors (8) are respectively grounded through the N capacitor grounding bodies (9); The other ends of the N capacitor connecting pieces (5) pass through N small holes and are connected to the input terminals of the corresponding N pulse steepening capacitors (8); The umbrella-shaped connecting conductor (4) is located inside the first through hole (601), and the output end of the umbrella-shaped connecting conductor (4) is connected to the gas steepening switch (10) to trigger the gas steepening switch (10) to break down and conduct, so that the gas steepening switch (10) outputs a trigger electrical pulse with a fast leading edge; The umbrella-shaped connecting conductor (4) includes N split claws (401) and a conductive component (402); All N split claws (401) are L-shaped structures. One end of each split claw (401) is located outside the first through hole (601) and is connected to one end of the annular contact conductor (2) through the corresponding pulse transmission connecting piece (3). The other end of each split claw (401) is fixedly connected to one end of the conducting component (402). The other end of the conducting component (402) is connected to the gas steepening switch (10).

2. The pulse steepening device for a high-voltage trigger source according to claim 1, characterized in that: The capacitor grounding body (9) includes a grounding base (902), a grounding movable head (903) and a spring (904) disposed inside the grounding base (902); The grounding base (902) is a cylindrical structure, and a fourth through hole (905) is provided along the axial direction of the grounding base (902); one end of the grounding base (902) is connected to the output end of N pulse steepening capacitors (8) through a grounding connecting piece (901); a first annular boss (906) is provided on the inner wall of the other end of the grounding base (902); the grounding movable head (903) is a cylindrical structure with a second blind hole and the opening end of the second blind hole faces the grounding connecting piece (901); a second annular boss (907) that cooperates with the first annular boss (906) is provided on the outer wall of the second blind hole of the grounding movable head (903); The spring (904) is located inside the second blind hole, and one end of the spring (904) abuts against the grounding connection piece (901), while the other end of the spring (904) abuts against the inside of the blind end of the second blind hole.

3. The pulse steepening device for a high-voltage trigger source according to claim 2, characterized in that: It also includes a supporting insulator (7) adapted to the fixed insulator (6); The supporting insulator (7) includes an annular body (701) and N fixed wedges (702) disposed on the annular body (701); The interior of the annular body (701) is in communication with the first through hole (601); The large hole of the second through hole (602) is a trapezoidal groove, the bottom surface of the trapezoidal groove is connected to the small hole and the bottom surface of the trapezoidal groove has an angle with the radial plane; one side wall of the pulse steepening capacitor (8) is in contact with the inner wall of the trapezoidal groove away from the axis; the fixing wedge (702) is a wedge-shaped prism structure, the fixing wedge (702) is located in the corresponding trapezoidal groove, and the inner side of the fixing wedge (702) abuts against the inner wall of the trapezoidal groove near the axis, and the outer side abuts against the other outer side wall of the pulse steepening capacitor (8), which is used to support and fix the pulse steepening capacitor (8).

4. A pulse steepening device for a high-voltage trigger source according to claim 3, characterized in that: The outer casing (1) includes a first casing (101) and a second casing (102); the first casing (101) and the second casing (102) are connected by a flange; The front end of the first housing (101) is provided with a through hole that is adapted to the annular contact conductor (2).

5. A pulse steepening device for a high-voltage trigger source according to claim 4, characterized in that: A first positioning ring (103) is provided on the inner wall of the first housing (101); The inner wall of the second housing (102) is provided with a second positioning ring (104) corresponding to the position of the first positioning ring (103); The fixed insulator (6) is located between the first positioning ring (103) and the second positioning ring (104), which are used to position the fixed insulator (6).

6. A pulse steepening device for a high-voltage trigger source according to claim 5, characterized in that: The angle between the bottom surface of the trapezoidal groove and the radial plane is 15-20 degrees; The wedge angle of the fixed wedge (702) is 15-20 degrees.

7. A pulse steepening device for a high-voltage trigger source according to claim 6, characterized in that: The material of the annular contact conductor (2) is a lightweight, ablation-resistant metal; The pulse transmission connector (3) and the umbrella-shaped connector (4) are both made of lightweight metals; The pulse steepening capacitor (8) is a plastic-cased double-ended pulse capacitor, and its internal cores are stacked and arranged along the long side of the pulse steepening capacitor (8). The grounding connection piece (901), grounding base (902), and grounding movable head (903) are all made of ablation-resistant metal.

8. A pulse steepening device for a high-voltage trigger source according to claim 7, characterized in that: The first housing (101) and the second housing (102) are both made of stainless steel; The annular contact conductor (2) is made of titanium alloy; The material of the pulse transmission connector (3) is aluminum alloy; The umbrella-shaped connecting conductor (4) is made of aluminum alloy; The capacitor connecting piece (5) is made of aluminum alloy; The material of the fixed insulator (6) is nylon or polyethylene; The grounding connection piece (901), grounding base (902), and grounding movable head (903) are all made of tungsten copper alloy or copper chromium alloy. The spring (904) is made of phosphor bronze; The gas steepening switch (10) is a two-electrode self-breakdown switch, the electrode material is graphite, and the electric field non-uniformity coefficient of the gap is 3~3.

5.

9. A pulse steepening device for a high-voltage trigger source according to claim 8, characterized in that: The value of N is six.

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