Multi-stage series FLTD secondary water line bubble removal structure and exhaust method

Abstract

The application discloses a kind of multistage series FLTD secondary water line bubble removal structure and exhaust method, belong to the field of pulse power.The application is by setting water inlet channel in the outside of multistage series FLTD module, and water medium liquid is injected into secondary water line inside in vacuum, and exhaust bubble assembly is equipped at the top of liquid surface of secondary water line outer cylinder, can when water line is filled with water medium liquid, bubble in the upper portion of water medium liquid is exhausted to external water tank by exhaust bubble assembly, and secondary water line bubble is removed.Exhaust bubble channel external circuit is provided with independent valve, and each exhaust bubble assembly is controlled separately, different position each FLTD bubble removal is influenced each other by the problem of different exhaust channel air resistance difference, so that bubble in secondary water line is removed more thoroughly.Therefore, the bubble removal structure can solve the problem that FLTD corresponding secondary water line branch output insulator position bubble is removed, and the insulating property of secondary water line under high voltage is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pulse power, and relates to a multi-stage series FLTD secondary water line bubble removal structure and a bubble removal method. BACKGROUND

[0002] FLTD (fast linear transformer driver source) can directly output fast front high-power electric pulses without pulse compression, and is recognized as a new technology of the next generation of high-power driving source with the most development and application prospects at home and abroad, and has important application value in high-power Z-pinch, flash photography and strong laser and the like. A typical topological structure is as follows: fast discharge branches are connected in parallel to form a hundred GW single-stage module, dozens of modules are connected in series to form a TW single circuit, dozens of TW single circuits are connected in parallel to converge to generate a hundred TW dozens of MA super high-power electric pulses, and different types of loads are driven to generate various extreme conditions.

[0003] The output power of the FLTD driving source secondary transmission line is generally a water line transmission superimposed power with impedance matching, each FLTD module is a plurality of branches connected in parallel and coaxial and uniformly distributed, and occupies the circumferential space of the secondary water line outer cylinder, so that it is very difficult to remove the bubbles at the position of the insulator corresponding to the branch output of the FLTD secondary water line. Once there is a bubble in the secondary, since the dielectric constant of deionized water is 80 times that of gas, the electric field strength in the bubble is 80 times that in water, which causes gas breakdown and further causes short circuit of each branch output of the FLTD, resulting in power transmission failure. SUMMARY

[0004] The purpose of the application is to solve the problem of difficulty in removing bubbles at the highest position of the insulator corresponding to the branch output of the FLTD secondary water line in the prior art, and to provide a multi-stage series FLTD secondary water line bubble removal structure and a bubble removal method.

[0005] To achieve the above purpose, the following technical solutions are adopted in the application:

[0006] The application provides a multi-stage series FLTD secondary water line bubble removal structure, which comprises a flange, a secondary water line located in the inside of a multi-stage series FLTD module, a bubble removal assembly, and a water inlet channel installed on the outside of the multi-stage series FLTD module.

[0007] The four bubble removal units are all installed on the electrode of the secondary water line outer cylinder of the multi-stage series FLTD module, the output ports of the four bubble removal units all pass through the four through holes of the flange in sequence, and are connected with four bubble guide pipes, a water tank is installed at the other end of the four bubble guide pipes, and an external bubble passage valve is installed on each of the four bubble guide pipes.

[0008] Preferably, a water tank external connecting valve is installed on the outer wall surface of the water tank.

[0009] Preferably, a water tank vacuumizing interface is installed on the outer wall surface of the water tank.

[0010] Preferably, the water tank vacuumizing interface is installed above the outer wall surface of the water tank.

[0011] Preferably, the air bubble discharging unit comprises an air bubble discharging point, an electrode air bubble channel and a primary cavity air bubble channel.

[0012] The air bubble discharging point is located at the vertex where the intermediate insulator of the multi-stage series FLTD module is tangent to the upper electrode of the secondary water line outer cylinder of the multi-stage series FLTD module, a channel for installing the electrode air bubble channel is opened on the upper electrode of the secondary water line outer cylinder of the multi-stage series FLTD module, one end of the electrode air bubble channel is in communication with the air bubble discharging point, the other end of the electrode air bubble channel is connected with the primary cavity air bubble channel, and the other end of the primary cavity air bubble channel is in communication with the air bubble guide pipe.

[0013] Preferably, the electrode air bubble channel comprises a horizontal channel connected with the air bubble discharging point, a vertical channel, a channel sealing cover plate and a bubble channel pagoda output port.

[0014] The vertical channel is sealed by the channel sealing cover plate, and the bubble channel pagoda output port is embedded in the other end of the vertical channel.

[0015] Preferably, the primary cavity air bubble channel is made of an insulating air pipe.

[0016] Preferably, the bubble channel pagoda output port and the primary cavity air bubble channel are fixed by a hoop clamp.

[0017] The present application provides an air discharging method of a multi-stage series FLTD secondary water line air bubble discharging structure, which comprises the following steps:

[0018] a) liquid is introduced into the secondary water line from the water inlet channel;

[0019] b) when the secondary water line and the air bubble discharging unit are filled with liquid, the air bubbles in the secondary water line are introduced into four air bubble guide pipes through the four air bubble discharging units respectively;

[0020] c) under the action of the external air bubble channel valve, the air bubbles are introduced into the water tank, so as to realize the discharging of the air bubbles in the secondary water line.

[0021] Preferably, the four external air bubble channel valves work independently.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] The application provides a multi-stage series FLTD secondary water line bubble removal structure, which is characterized in that a water inlet channel is arranged outside the multi-stage series FLTD module to guide liquid into the multi-stage series FLTD module; a secondary water line and a bubble removal assembly are arranged in the multi-stage series FLTD module, so that the bubbles at the position above the liquid in the secondary water line are removed through the bubble removal assembly and guided into a bubble guide pipe; and an external bubble channel valve is arranged to control whether the bubbles in the bubble guide pipe are guided into a water tank, so that the bubbles in the secondary water line are removed.

[0024] Further, a water tank external connecting valve is arranged on the outer wall of the water tank, so that the multiple bubble removal structures can work simultaneously or at different times.

[0025] Further, a water tank vacuumizing interface is arranged on the outer wall of the water tank, so that a negative air pressure is formed in the secondary water line.

[0026] Further, a rectangular groove is formed by milling to form an electrode bubble channel, and a sealing channel for removing bubbles is formed by welding a channel sealing cover plate, so that the problem of machining a long and thin hole in the electrode thin plate structure of the secondary water line outer cylinder is solved.

[0027] Further, the primary cavity bubble channel is made of an insulating air pipe, so that the bubble channel output port and the primary cavity bubble channel are fixed by a hoop clamp, and the air tightness is better.

[0028] The application provides a bubble removal method of the multi-stage series FLTD secondary water line bubble removal structure, liquid is guided into the secondary water line through a water inlet channel, the secondary water line is filled with liquid, bubbles are guided into a water tank through four bubble removal units, the bubbles in the water line are removed, and the operation method is simple. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 The application provides a multi-stage series FLTD secondary water line bubble removal structure, which is characterized in that a water inlet channel is arranged outside the multi-stage series FLTD module to guide liquid into the multi-stage series FLTD module; a secondary water line and a bubble removal assembly are arranged in the multi-stage series FLTD module, so that the bubbles at the position above the liquid in the secondary water line are removed through the bubble removal assembly and guided into a bubble guide pipe; and an external bubble channel valve is arranged to control whether the bubbles in the bubble guide pipe are guided into a water tank, so that the bubbles in the secondary water line are removed.

[0031] Figure 2Figure 1 is a first enlarged view of the exhaust bubble assembly structure of the present application.

[0032] Figure 3 Figure 2 is a second enlarged view of the exhaust bubble assembly structure of the present application.

[0033] Figure 4 Figure 3 is a schematic view of the exhaust bubble unit position.

[0034] Figure 5 Figure 4 is a schematic view of the multi-stage series FLTD module exhaust bubble module of the present application.

[0035] Figure 6 Figure 5 is a schematic view of the electrode channel structure of the exhaust bubble module of the present application.

[0036] Wherein: 1 - first single-stage module, 2 - second single-stage module, 3 - third single-stage module, 4 - fourth single-stage module, 52 - secondary water line outer cylinder upper electrode, 53 - secondary water line outer cylinder lower electrode, 54 - intermediate insulator, 60 - flange, 61 - secondary water line, 62 - exhaust bubble assembly, 63 - water inlet channel, 621 - exhaust bubble unit, 62121 - horizontal channel, 62122 - vertical channel, 62123 - channel sealing cover plate, 62124 - bubble channel pagoda output port, 626 - water tank, 627 - water tank external connection valve, 6211 - bubble discharge point, 6212 - electrode bubble channel, 6213 - primary cavity bubble channel, 6214 - bubble channel sealing through-wall flange, 6215 - external bubble channel, 6216 - external bubble channel valve, 628 - water tank vacuumizing interface, 70 - bubble guide pipe. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0039] It should be noted that: similar numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0040] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicate the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The present application will be described in further detail below with reference to the accompanying drawings:

[0044] A multi-stage series FLTD secondary water line bubble removal structure, as shown in Figure 1 A typical four-stage shared cavity FLTD assembly, as shown in Figures 2-6 includes a flange 60, a secondary water line 61 located inside the multi-stage series FLTD module, and a bubble removal assembly 62, and a water inlet channel 63 installed outside the multi-stage series FLTD module, wherein the multi-stage series FLTD module includes a first single-stage module 1, a second single-stage module 2, a third single-stage module and a fourth single-stage module 4.

[0045] Four through holes are formed in the flange 60; the bubble removal assembly 62 includes four bubble removal units 621 which are identical in structure. Four bubble removal units 621 are all installed on the electrode 52 of the secondary water line outer cylinder of the multi-stage series FLTD module; the output ports of the four bubble removal units 621 all pass through the four through holes of the multi-stage series FLTD module and the flange 60 in turn, and are communicated with four bubble guide pipes 70, and a water tank 626 is installed at the other end of the four bubble guide pipes 70, and an external bubble passage valve 6216 is installed on each of the four bubble guide pipes 70.

[0046] The exhaust bubble unit 621 comprises a bubble exhaust point 6211, an electrode bubble channel 6212 and a primary cavity bubble channel 6213; the bubble exhaust point 6211 is located at the vertex where the intermediate insulator 54 of the multi-stage series FLTD module is tangent to the secondary water line outer cylinder upper electrode 52 of the multi-stage series FLTD module, the secondary water line outer cylinder upper electrode 52 of the multi-stage series FLTD module is provided with a channel for installing the electrode bubble channel 6212, one end of the electrode bubble channel 6212 is in communication with the bubble exhaust point 6211, the other end of the electrode bubble channel 6212 is connected with the primary cavity bubble channel 6213, and the other end of the primary cavity bubble channel 6213 is in communication with the bubble guide pipe 70. Specifically, the electrode bubble channel 6212 comprises a horizontal channel 62121 connected with the bubble exhaust point 6211, a vertical channel 62122, a channel sealing cover plate 62123 and a bubble channel pagoda output port 62124; the vertical channel 62122 is sealed by the channel sealing cover plate 62123, and the bubble channel pagoda output port 62124 is embedded at the other end of the vertical channel 62122.

[0047] A water tank external connecting valve 627 is installed on the outer wall surface of the water tank 626, and a water tank vacuumizing interface 628 is installed on the outer wall surface of the water tank 626. Among them, the water tank vacuumizing interface 628 is installed above the outer wall surface of the water tank 626.

[0048] The primary cavity bubble channel 6213 is made of an insulating air pipe, and the bubble channel pagoda output port 62124 is fixed with the primary cavity bubble channel 6213 by a hoop clamp.

[0049] Among them, any one of the first single-stage module 1, the second single-stage module 2, the third single-stage module and the fourth single-stage module 4 contains 2 magnetic cores 51, 1 secondary water line outer cylinder upper electrode 52, 1 secondary water line outer cylinder lower electrode 53, 1 intermediate insulator 54, 2 groups of discharge branches 55 and 2 insulating plates 56. The two magnetic cores 51 are distributed in axial symmetry with the intermediate insulator 54 as the center. The two groups of discharge branches 55 are distributed in axial symmetry with the intermediate insulator 54 as the center. The intermediate insulator 54 is uniformly distributed with 24 reinforcing ribs 541 along the circumference, and the outer side of the reinforcing rib 541 is provided with a via hole 542, so that the intermediate insulator 54 forms 24 drawer structures, and each drawer places a discharge branch 55. Each discharge branch is 24 discharge branches 55, which are uniformly distributed around the magnetic core 51. The two insulating plates 56 are distributed in axial symmetry with the intermediate insulator 54 as the center.

[0050] The first single-stage module 1 and the secondary water line 61 form a first-stage secondary pulse transmission line, the second single-stage module 2 and the secondary water line 61 form a second-stage secondary pulse transmission line, the third single-stage module 3 and the secondary water line 61 form a third-stage secondary pulse transmission line, and the fourth single-stage module 4 and the secondary water line 61 form a fourth-stage secondary pulse transmission line, and the four pulse transmission lines are electrically connected in sequence in the axial direction to form a high-voltage pulse superposition transmission line.

[0051] The transmission line is filled with deionized water as an energy storage and transmission medium, and the bubbles in the deionized water cannot be completely removed from the physical mechanism and coexist with the deionized water, so the bubble removal assembly 62 is designed.

[0052] Each single-stage module bubble removal unit 621 has the same structure and relatively independent working mode, and only the distribution position is different.

[0053] The bubble removal point 6211 is the highest point of the physical space position of the deionized water when the high-voltage pulse transmission line is horizontally placed, is located at the tangent vertex of the intermediate insulator 54 and the upper electrode 52 of the secondary water line outer cylinder, and is also a natural gathering place of the bubbles.

[0054] The primary cavity bubble passage 6213 is made of an insulating air pipe, one end of which is connected to the bubble passage pagoda output port 62124 and is clamped by a hoop, and the other end is airtightly connected to the bubble passage sealing wall-penetrating flange 60. The insulating air pipe extends radially from the intermediate position between the two discharge branches 55 to the bubble passage sealing wall-penetrating flange 60 along the direction of the bubble passage pagoda output port 62124 in the primary cavity, and is connected to the bubble passage sealing wall-penetrating flange 60 through the via of the intermediate insulator 54. Outside the device, the bubble guide pipe 70 is connected to the water tank 626 through the external bubble passage valve 6216.

[0055] The high-voltage pulse transmission line water injection process is as follows: the vacuum system is connected to the water tank vacuum interface 628, the bubble removal assembly 62 is connected to the water tank 626, and the negative air pressure in the high-voltage pulse superposition transmission line is formed.

[0056] Under the action of the negative air pressure, the deionized water enters the high-voltage pulse superposition transmission line through the water inlet channel 63, enters the water tank 626 through the bubble removal assembly 62, and completes the vacuum water injection of the high-voltage pulse superposition transmission line.

[0057] The vacuum system continuously works, so that the gas in the deionized water in the high-voltage pulse superposition transmission line is further separated out, enters the water tank 626 through the bubble removal assembly, and is discharged by the vacuum system.

[0058] The bubble removal method of the multi-stage series FLTD secondary water line bubble removal structure provided by the application comprises the following steps:

[0059] a) The water tank vacuum interface 628 is connected with the vacuum pump group, the vacuum pump group starts to work, the inside of the water tank 626 and the four exhaust bubble units 621 and the secondary water line 61 connected with it form a negative pressure state, the vacuum degree is less than 10 -2 Pa.

[0060] b) Slowly open the water inlet channel 63, and slowly inject water medium into the secondary water line 61;

[0061] c) When the secondary water line 61 and the exhaust bubble unit 621 are filled with water medium liquid, the water inlet channel 63 is closed, the vacuum is continuously extracted, and the bubbles in the secondary water line 61 are introduced into the four bubble guide pipes 70 through the four exhaust bubble units 621 respectively;

[0062] d) Under the action of the external bubble channel valve 6216, the bubbles are introduced into the water tank 626, and the bubbles in the secondary water line 61 are removed.

[0063] The multi-stage series FLTD secondary water line bubble removal structure and the exhaust method provided by the application solve the problem of machining of the long and narrow hole of the thin plate structure of the electrode 52 on the secondary water line outer cylinder, the rectangular groove is milled to form the electrode bubble channel 62122, and the deionized water sealing channel is formed by welding the channel sealing cover plate 62123, four single-stage module exhaust bubble modules are relatively independent, the bubble channel can be independently controlled, and the problem of mutual adverse effects caused by different bubble channel gas resistance differences is solved.

[0064] The above is only the preferred embodiment of the application and is not used to limit the application, for those skilled in the art, the application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A multi-stage tandem FLTD secondary water line bubble removal structure, characterized in that, It includes a flange (60), a secondary water line (61) located inside the multi-stage series FLTD module, and an air bubble removal assembly (62), as well as an inlet channel (63) installed outside the multi-stage series FLTD module; the flange (60) has four through holes; the air bubble removal assembly (62) includes four air bubble removal units (621) with the same structure. All four bubble removal units (621) are installed on the upper electrode (52) of the secondary water line outer cylinder of the multi-stage series FLTD module; the output ports of the four bubble removal units (621) pass through the four through holes of the multi-stage series FLTD module and the flange (60) in sequence, and are connected to four bubble conduits (70). A water tank (626) is installed at the other end of the four bubble conduits (70), and an external bubble channel valve (6216) is installed on each of the four bubble conduits (70). A water tank vacuum interface (628) is installed on the outer wall of the water tank (626); the bubble removal unit (621) includes a bubble removal point (6211), an electrode bubble channel (6212), and a primary cavity bubble channel (6213); the bubble removal point (6211) is located at the vertex where the intermediate insulator (54) of the multi-stage series FLTD module is tangent to the upper electrode (52) of the secondary water line outer cylinder of the multi-stage series FLTD module; the upper electrode (52) of the secondary water line outer cylinder of the multi-stage series FLTD module has a channel for installing the electrode bubble channel (6212); one end of the electrode bubble channel (6212) is connected to the bubble removal point (6211); the other end of the electrode bubble channel (6212) is connected to the primary cavity bubble channel (6213); and the other end of the primary cavity bubble channel (6213) is connected to the bubble conduit (70). The electrode bubble channel (6212) includes a horizontal channel (62121) connected to the bubble discharge point (6211), a vertical channel (62122), a channel sealing cover (62123), and a bubble channel pagoda outlet (62124); the vertical channel (62122) is sealed by the channel sealing cover (62123), and the bubble channel pagoda outlet (62124) is embedded at the other end of the vertical channel (62122).

2. The multi-stage tandem FLTD secondary waterline bubble removal structure according to claim 1, characterized in that, An external connection valve (627) is installed on the outer wall of the water tank (626).

3. The multi-stage FLTD secondary waterline bubble removal structure according to claim 1, characterized in that, The water tank vacuum port (628) is installed above the outer wall of the water tank (626).

4. The multi-stage tandem FLTD secondary waterline bubble removal structure according to claim 1, characterized in that, The primary cavity bubble channel (6213) is made of an insulated gas tube.

5. The multi-stage tandem FLTD secondary waterline bubble removal structure according to claim 4, characterized in that, The bubble channel pagoda outlet (62124) and the primary cavity bubble channel (6213) are fixed together by a hoop clamp.

6. The venting method using the multi-stage series FLTD secondary waterline bubble removal structure according to any one of claims 1 to 5, characterized in that, Includes the following steps: a) Liquid is introduced into the secondary water line (61) from the inlet channel (63); b) When the secondary water line (61) and the bubble removal unit (621) are filled with liquid, the bubbles in the secondary water line (61) are introduced into the four bubble conduits (70) through the four bubble removal units (621); c) Under the action of the external bubble channel valve (6216), the bubbles are introduced into the water tank (626) to remove the bubbles in the secondary water line (61).

7. The venting method for the multi-stage FLTD secondary waterline bubble removal structure according to claim 6, characterized in that, The four external bubble channel valves (6216) operate independently.

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