A load device for metal wire electric explosion and assembly method thereof

Abstract

The present application discloses a load device for electric explosion of metal wire and its assembly method, the load device comprises a transducer window, a cylinder body of a cylindrical structure, a high-voltage center through rod, and a support block group; the side wall of the transducer window is provided with an opening for the shock wave to pass through; the upper end of the transducer window is connected to the lower end of the cylinder body, and the bottom of the transducer window is provided with a load lower connection end; the transducer window and the cylinder body form a conductor for supplying power to the load lower connection end; the lower end of the high-voltage center through rod is provided with a load upper connection end, and the lower end of the high-voltage center through rod passes through the cylinder body and extends into the transducer window; the load upper connection end and the load lower connection end are arranged at intervals; the high-voltage center through rod is supported in the cylinder body by a support block group, the support block group adopts an insulating material, and the support block group is sealed with the high-voltage center through rod and the cylinder body. The present application solves the problem that the existing metal wire installation structure is prone to large swing or structural damage during the electric explosion of the metal wire.

Description

Technical Field

[0001] The present application belongs to the field of pulse power technology, and in particular relates to a load device for electric explosion of metal wires and an assembly method thereof. Background Art

[0002] At present, there are metal wire electric explosion tests with capacitor energy storage of hundreds of kilojoules. The maximum explosion current can reach hundreds of kiloamperes, the pulse width can reach more than 600 microseconds, and the amount of charge passing is more than tens of coulombs. When the metal wire explodes in water, it will produce a strong shock wave. Therefore, the metal wire cannot be directly connected to the positive and negative ends of the loop cable. This will cause a huge impact on the loop cable, which is highly dangerous. At the same time, the shock wave generated will vibrate the surrounding environment. The simple metal wire installation structure is prone to swinging sharply or structural damage when the metal wire explodes. Therefore, the existing metal wire installation structure cannot meet the use requirements of metal wire electric explosion with capacitor energy storage of hundreds of kilojoules. Summary of the invention

[0003] The embodiments of the present application provide a load device for metal wire electric explosion and an assembly method thereof, thereby solving the problem that the existing metal wire installation structure is prone to large swing or structural damage during metal wire electric explosion.

[0004] The embodiment of the present invention provides a load device for electric explosion of metal wire, comprising a transducer window, a cylindrical body, a high-voltage central through rod, and a support block group;

[0005] The transducer window is a cylindrical structure with an opening at the upper end, and the side wall of the transducer window is provided with an opening for the shock wave to pass through;

[0006] The upper end of the transducer window is connected to the lower end of the cylinder, and a load connection end is provided at the bottom of the transducer window; the transducer window and the cylinder form a conductor for supplying power to the load connection end;

[0007] The lower end of the high-voltage center through rod is provided with a load upper connecting end, and the lower end of the high-voltage center through rod passes through the cylinder and extends into the transducer window; the load upper connecting end and the load lower connecting end are arranged at intervals, and a space for clamping a metal wire is formed between the load upper connecting end and the load lower connecting end;

[0008] The high-voltage center through-rod is supported in the cylinder by the support block group. The support block group is made of insulating material. The support block group, the high-voltage center through-rod and the cylinder are all sealed.

[0009] In a possible implementation, the cylinder includes an upper tightening ring, a central outer cylinder, a lower tightening ring, and a bottom connecting cylinder which are sequentially connected by threads;

[0010] Sealing rings are provided at the connection points between the upper tightening ring and the central outer tube, between the central outer tube and the lower tightening ring, and between the lower tightening ring and the bottom connecting tube;

[0011] The upper tightening ring, the central outer tube, the lower tightening ring, and the outer walls of the bottom connecting tube are all provided with blind holes, and the number of the blind holes is more than one.

[0012] In a possible implementation, the support block group includes an upper insulator, an upper middle insulator, a lower middle insulator, and a bottom insulator, all of which are mounted on the barrel;

[0013] The centers of the upper insulator, the upper middle insulator, the lower middle insulator and the bottom insulator are all provided with mounting holes, and the inner walls of the mounting holes abut against the side walls of the high-voltage center through rod.

[0014] In a possible implementation, the device further includes a balancing portion, the balancing portion including a cylindrical ring body and a circular ring surface disposed outside the upper end of the ring body, the width of the circular ring surface is greater than the diameter of the ring body, and the circular ring surface is perpendicular to the axis of the ring body;

[0015] The lower end of the ring body is screwed into the threaded hole provided at the upper end of the upper tightening ring, the lower end of the upper insulator is sleeved inside the upper end of the ring body, the outer wall of the upper insulator is provided with a clamping boss, and the lower surface of the clamping boss abuts against the upper surface of the annular surface;

[0016] The upper end of the high-voltage center through rod passes through the mounting hole in the center of the upper insulator and is screwed into the threaded hole provided at the lower end of the top fixing cap; the lower surface of the top fixing cap abuts against the upper surface of the upper insulator.

[0017] In a possible implementation, a first annular boss is provided on the outer wall of the upper middle insulator, the upper surface of the first annular boss abuts against the lower end surface of the upper tightening ring, and the lower surface of the first annular boss abuts against the step surface of the step hole on the inner wall of the central outer cylinder;

[0018] The outer wall of the lower middle insulator is provided with a second annular boss, and the lower end of the lower middle insulator is provided with a lower mounting step hole;

[0019] The upper surface of the second annular boss abuts against the step surface of the step hole on the inner wall of the central outer cylinder, and the lower surface of the second annular boss abuts against the upper end surface of the lower tightening ring;

[0020] The inner wall of the bottom connecting tube is provided with a third annular boss; the upper surface of the third annular boss abuts against the lower end surface of the lower middle insulator;

[0021] The bottom insulator comprises an inserting portion and an abutting portion arranged at the lower end of the inserting portion, and the outer diameter of the inserting portion is smaller than the outer diameter of the abutting portion;

[0022] The plug-in portion passes through the third annular boss and is inserted into the lower mounting step hole, and the lower surface of the third annular boss abuts against the upper surface of the abutting portion;

[0023] A first clamping section is provided at the lower part of the high-voltage center through rod, and an upper end surface of the first clamping section abuts against a step surface of a step hole provided at the lower end of the bottom insulator.

[0024] In a possible implementation, an upper mounting step hole is provided at the upper end of the upper middle insulator, an upper fastening nut is installed at the portion of the high-voltage center through rod located in the upper mounting step hole, and a lower surface of the upper fastening nut abuts against a step surface of the upper mounting step hole;

[0025] The portion of the high-voltage center through rod located in the lower mounting step hole is the second clamping section, the diameter of the second clamping section is larger than the diameter of the portion of the high-voltage center through rod located in the mounting hole of the lower middle insulator, the upper end surface of the second clamping section abuts against the step surface of the lower mounting step hole, and a lower fastening nut is installed on the second clamping section, and the lower surface of the lower fastening nut abuts against the upper end surface of the plug-in portion.

[0026] In a possible implementation, a sealing ring is provided between the bottom insulator and the high-voltage center through rod, and a sealing ring is provided between the bottom insulator and the bottom connecting tube.

[0027] In a possible implementation, the load upper connection end and the load lower connection end have the same structure, and both the load upper connection end and the load lower connection end include a block and a threaded hole provided on the block;

[0028] A threaded rod is installed on the bottom surface of the transducer window, the upper end of the threaded rod is screwed into the threaded hole at the bottom of the transducer window, and the load-lower connecting end is installed on the upper end of the threaded rod.

[0029] In a possible implementation, a portion of the outer wall of the upper middle insulator, a portion of the outer wall of the lower middle insulator, and a portion of the outer wall of the bottom insulator are respectively in contact with the inner wall of the cylinder.

[0030] The embodiment of the present application also provides an assembly method of a load device for electric explosion of a metal wire, using the load device for electric explosion of a metal wire, comprising the following steps:

[0031] Pass the upper end of the high-voltage center through rod through the bottom insulator, then pass the upper end of the bottom insulator through the bottom connecting tube, screw the lower fastening nut into the second clamping section, so that the lower surface of the lower fastening nut abuts against the upper end surface of the bottom insulator;

[0032] Connecting the lower end of the bottom connecting tube and the upper end of the transducer window via threads;

[0033] Connecting the upper end of the bottom connecting tube and the lower end of the lower tightening ring through threads;

[0034] Insert the lower end of the lower middle insulator into the upper end of the lower top tightening ring, and make the lower surface of the second annular boss abut against the upper end surface of the lower top tightening ring; make the plug-in portion and the lower fastening nut located in the lower mounting step hole;

[0035] Insert the upper end of the lower middle insulator into the lower end of the central outer tube, connect the upper end of the lower tightening ring and the lower end of the central outer tube by threads, so that the upper surface of the second annular boss abuts against the step surface of the step hole on the inner wall of the central outer tube;

[0036] Insert the lower end of the upper middle insulator into the interior of the upper end of the central outer tube, and make the lower surface of the first annular boss abut against the step surface of the step hole on the inner wall of the central outer tube;

[0037] Screw the upper fastening nut into the threaded section corresponding to the high-pressure center through rod, so that the lower surface of the upper fastening nut abuts against the step surface of the upper mounting step hole;

[0038] The lower end of the upper tightening ring is connected to the upper end of the central outer cylinder through threads, and the lower end of the balancing part is connected to the upper end of the upper tightening ring through threads;

[0039] Insert the lower end of the upper insulator into the upper end of the balancing portion so that the lower surface of the clamping boss abuts against the upper surface of the annular surface;

[0040] The top fixing cap is mounted on the upper end of the high-voltage center through rod so that the lower surface of the top fixing cap abuts against the upper end surface of the upper insulator.

[0041] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0042] The embodiment of the present invention provides a load device for metal wire electric explosion and an assembly method thereof. The cylinder of the device can be placed in a small circular hole to meet the on-site installation requirements of metal wire electric explosion. The high-voltage center through rod has good conductivity and structural strength; the support block group has good structural strength and can withstand shock waves of huge pressure, and also has good insulation. The support block group is sealed with the high-voltage center through rod and the cylinder, so the device can be used for shock wave testing in water. One end of the power supply is connected to the cylinder, and the other end of the power supply is connected to the upper end of the high-voltage center through rod. Then the current flows to the metal wire between the upper connection end and the lower connection end of the load to generate a shock wave. The shock wave acts on the target through the opening of the side wall of the transducer window. The load device is highly safe and reliable when used, and can withstand the vibration caused by the shock wave, avoiding the problem of large swing or structural damage of the load device. The load device can meet the use requirements of metal wire electric explosion with hundreds of kilojoules of capacitor energy storage. The balancing part can increase the weight of the load device, thereby being able to resist the huge vibration caused by the shock wave. The balancing part can also prevent water splashing on the top fixing cap and the upper insulator, thereby improving the safety of the load device when in use. The assembly method of the load device of the present invention has simple operation steps, can quickly and firmly install the components together, and meet the application requirements of metal wire electric explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic structural diagram of a load device for electric explosion of a metal wire provided in an embodiment of the present invention.

[0045] Figure markings: 1-transducer window; 2-cylinder body; 21-upper tightening ring; 22-center outer cylinder; 23-lower tightening ring; 24-bottom connecting cylinder; 241-third annular boss; 25-blind hole; 3-high-voltage center through rod; 31-first clamping section; 32-upper fastening nut; 33-second clamping section; 34-lower fastening nut; 4-load lower connecting end; 5-load upper connecting end; 6-upper insulator; 7-upper middle insulator; 71-first annular boss; 72-upper mounting step hole; 8-lower middle insulator; 81-second annular boss; 82-lower mounting step hole; 9-bottom insulator; 91-plug-in portion; 92-abutment portion; 10-balancing portion; 101-ring body; 102-annular surface; 11-top fixing cap; 12-threaded rod. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0048] like Figure 1 As shown, the load device for metal wire electric explosion provided by the embodiment of the present invention includes a transducer window 1, a cylindrical body 2, a high-voltage central through rod 3, and a support block group.

[0049] The transducer window 1 is a cylindrical structure with an opening at the upper end, and the side wall of the transducer window 1 is provided with an opening for the shock wave to pass through.

[0050] The upper end of the transducer window 1 is connected to the lower end of the cylinder 2, and a load lower connection terminal 4 is provided at the bottom of the transducer window 1. The transducer window 1 and the cylinder 2 form a conductor for supplying power to the load lower connection terminal 4.

[0051] The lower end of the high-voltage center through rod 3 is provided with a load upper connection end 5, and the lower end of the high-voltage center through rod 3 passes through the cylinder 2 and extends into the transducer window 1. The load upper connection end 5 and the load lower connection end 4 are arranged at intervals, and a space for clamping a metal wire is formed between the load upper connection end 5 and the load lower connection end 4. The metal wire is fixed by adjusting the spacing between the load upper connection end 5 and the load lower connection end 4. The diameter of the metal wire used is more than 1 mm.

[0052] The high-voltage center through-rod 3 is supported in the cylinder 2 by a support block group. The support block group is made of insulating material. The support block group, the high-voltage center through-rod 3 and the cylinder 2 are all sealed.

[0053] It should be noted that the material of the cylinder 2 is 45# steel, which has high strength, is not easy to rust, and can resist shock waves without deformation. The cylinder 2 can be placed in a small circular hole to meet the needs of on-site use. The material of the high-voltage center through rod 3 is chromium-molybdenum alloy, which has good conductivity and structural strength. The upper end of the transducer window 1 is threadedly connected to the lower end of the cylinder 2, and the support block group adopts high molecular weight polyethylene, which has good structural strength and can withstand shock waves of huge pressure. It also has good insulation. The support block group is sealed with the high-voltage center through rod 3 and the cylinder 2, so the device can be used for shock wave testing in water. One end of the power supply is connected to the cylinder 2, and the other end of the power supply is connected to the upper end of the high-voltage center through rod 3, and then the current flows to the metal wire between the upper connection end 5 of the load and the lower connection end 4 of the load to generate shock waves, and the shock waves act on the target through the opening of the side wall of the transducer window 1.

[0054] In this embodiment, the cylinder body 2 includes an upper tightening ring 21, a central outer cylinder 22, a lower tightening ring 23, and a bottom connecting cylinder 24 which are sequentially connected by threads.

[0055] Sealing rings are provided at the connection points between the upper tightening ring 21 and the central outer tube 22 , between the central outer tube 22 and the lower tightening ring 23 , and between the lower tightening ring 23 and the bottom connecting tube 24 .

[0056] The outer walls of the upper tightening ring 21 , the central outer tube 22 , the lower tightening ring 23 , and the bottom connecting tube 24 are all provided with blind holes 25 , and the number of the blind holes 25 is more than one.

[0057] It should be noted that the upper tightening ring 21, the center outer tube 22, the lower tightening ring 23, and the bottom connecting tube 24 are arranged in sections, which can facilitate the installation of the support block group and fix the high-pressure center through rod 3 well.

[0058] The sealing ring can prevent water from entering the interior of the cylinder body 2 from the connection points between the upper tightening ring 21 and the central outer cylinder 22 , the central outer cylinder 22 and the lower tightening ring 23 , and the lower tightening ring 23 and the bottom connecting cylinder 24 .

[0059] The blind hole 25 can fix the upper tightening ring 21, the center outer tube 22, the lower tightening ring 23, and the bottom connecting tube 24 during installation or removal, making it easier for the staff to apply force to twist them, thereby avoiding the problem of using a clamping device for installation or removal.

[0060] In this embodiment, the support block group includes an upper insulator 6 , an upper middle insulator 7 , a lower middle insulator 8 , and a bottom insulator 9 , all of which are installed on the cylinder 2 .

[0061] The upper insulator 6 , the upper middle insulator 7 , the lower middle insulator 8 , and the bottom insulator 9 are all provided with mounting holes at their centers, and the inner walls of the mounting holes abut against the side walls of the high-voltage center through rod 3 .

[0062] It should be noted that since a hole needs to be opened at the center of the cylinder 2, that is, at the center outer cylinder 22, the hole is reserved for the voltage measurement position. The gap between the high-voltage center through rod 3 at the center outer cylinder 22 and the voltage probe can be equivalent to a high-voltage end capacitor. According to the principle of capacitive voltage divider, the high-voltage end capacitance value is small and the capacitive reactance value is large, while the low-voltage end capacitance value is large and the capacitive reactance value is small. Only in this way can a suitable low-voltage end signal be measured at the low-voltage end. Therefore, the upper middle insulator 7 and the lower middle insulator 8 at the center outer cylinder 22 are not directly designed as an integrated structure, but are divided into two parts, leaving a gap of 2 cm, so as to ensure that the signal can be accurately measured.

[0063] If the gap at the center outer tube 22 is blocked by the insulator, according to the formula If the ε value of the insulator is very large, then the capacitance value will be very large, and its capacitive reactance value will become very small, forming a low-voltage end. The original low-voltage end becomes a high-voltage end, which is very unfavorable for signal measurement.

[0064] The function of the bottom insulator 9 is to separate the high-voltage center through-rod 3 and the transducer window 1 so as to reduce the probability of the high-voltage center through-rod 3 directly discharging to the transducer window 1 as much as possible.

[0065] The upper insulator 6 is used to separate the high-voltage center through-rod 3 from the upper tightening ring 21 and the balancing part 10 described below, so as to reduce the probability of direct discharge of the high-voltage center through-rod 3 to the upper tightening ring 21 and the balancing part 10 described below as much as possible.

[0066] By setting the load device of this length, accurate voltage measurement can be achieved at a better position, and the weight of the load device can also be increased to resist the vibration caused by the shock wave.

[0067] In this embodiment, a balancing part 10 is further included. The balancing part 10 includes a cylindrical ring body 101 and a circular ring surface 102 arranged on the outer side of the upper end of the ring body 101. The width of the circular ring surface 102 is greater than the diameter of the ring body 101, and the circular ring surface 102 is perpendicular to the axis of the ring body 101.

[0068] The lower end of the ring body 101 is screwed into the threaded hole set at the upper end of the upper tightening ring 21, and the lower end of the upper insulator 6 is inserted into the inner part of the upper end of the ring body 101. The outer wall of the upper insulator 6 is provided with a clamping boss, and the lower surface of the clamping boss abuts against the upper surface of the annular surface 102.

[0069] The upper end of the high-voltage center through rod 3 passes through the mounting hole in the center of the upper insulator 6 and is screwed into the threaded hole provided at the lower end of the top fixing cap 11. The lower surface of the top fixing cap abuts against the upper surface of the upper insulator 6.

[0070] It should be noted that the balancing part 10 is made of stainless steel. The shock wave caused by the electric explosion of the metal wire in water will cause huge vibration to the load device. The weight of the transducer window 1, the cylinder 2, the high-voltage center rod 3 and the support block group is not enough to resist the vibration caused by the shock wave, which can easily cause the load device to swing greatly, and then cause the lifting equipment to fall off. Therefore, by setting the balancing part 10, the weight of the load device can be increased, and thus the huge vibration caused by the shock wave can be resisted.

[0071] At the same time, the water splashed by the electric explosion of the metal wire will splash onto the connection between the top fixing cap 11 and the upper insulator 6, which is the installation place of the high-voltage terminal connector of the cable. The high-voltage terminal connector of the cable may be stained with water, which may cause abnormal discharge. Therefore, the balancing part 10 can also prevent water splashes from splashing onto the top fixing cap 11 and the upper insulator 6, thereby improving the safety of the load device when in use.

[0072] The space between the top fixing cap and the upper insulator 6 can facilitate the connection of the cable joint, so as to transmit the electric energy to the metal wire through the high-voltage center rod 3.

[0073] In this embodiment, a first annular boss 71 is provided on the outer wall of the upper middle insulator 7, the upper surface of the first annular boss 71 abuts against the lower end surface of the upper tightening ring 21, and the lower surface of the first annular boss 71 abuts against the step surface of the step hole on the inner wall of the center outer tube 22.

[0074] The outer wall of the lower middle insulator 8 is provided with a second annular boss 81 , and the lower end of the lower middle insulator 8 is provided with a lower mounting step hole 82 .

[0075] The upper surface of the second annular boss 81 abuts against the step surface of the step hole on the inner wall of the central outer cylinder 22 , and the lower surface of the second annular boss 81 abuts against the upper end surface of the lower tightening ring 23 .

[0076] The inner wall of the bottom connecting tube 24 is provided with a third annular boss 241. The upper surface of the third annular boss 241 abuts against the lower end surface of the lower middle insulator 8.

[0077] The bottom insulator 9 includes an inserting portion 91 and an abutting portion 92 disposed at the lower end of the inserting portion 91 . The outer diameter of the inserting portion 91 is smaller than the outer diameter of the abutting portion 92 .

[0078] The inserting portion 91 passes through the third annular boss 241 and is inserted into the lower mounting step hole 82 . The lower surface of the third annular boss 241 abuts against the upper surface of the abutting portion 92 .

[0079] A first clamping section 31 is provided at the lower portion of the high-voltage center through rod 3 , and an upper end surface of the first clamping section 31 abuts against a step surface of a step hole provided at the lower end of the bottom insulator 9 .

[0080] It should be noted that the upper middle insulator 7 is clamped on the barrel 2 through the first annular boss 71, and the lower middle insulator 8 is clamped on the barrel 2 through the second annular boss 81. The third annular boss 241 of the bottom connecting barrel 24 further supports and fixes the lower middle insulator 8, and the bottom insulator 9 is fastened through the first clamping section 31. After the transducer window 1 and the bottom connecting barrel 24 are docked, the step hole of the transducer window 1 fixes the bottom insulator 9 and the high-voltage center through rod 3. Thus, the high-voltage center through rod 3 is stably supported.

[0081] In this embodiment, an upper mounting step hole 72 is provided at the upper end of the upper middle insulator 7, and an upper fastening nut 32 is installed on the portion of the high-voltage center through rod 3 located in the upper mounting step hole 72, and the lower surface of the upper fastening nut 32 abuts against the step surface of the upper mounting step hole 72.

[0082] The portion of the high-voltage center through rod 3 located in the lower mounting step hole 82 is the second clamping section 33. The diameter of the second clamping section 33 is larger than the diameter of the portion of the high-voltage center through rod 3 located in the mounting hole of the lower middle insulator 8. The upper end surface of the second clamping section 33 abuts against the step surface of the lower mounting step hole 82. A lower fastening nut 34 is installed on the second clamping section 33, and the lower surface of the lower fastening nut 34 abuts against the upper end surface of the plug-in portion 91.

[0083] It should be noted that the upper fastening nut 32 and the lower fastening nut 34 are used in conjunction with spring washers to prevent the upper fastening nut 32 and the lower fastening nut 34 from loosening. The upper fastening nut 32 and the lower fastening nut 34 can fix the high-pressure center through rod 3 to prevent the high-pressure center through rod 3 from sliding downward.

[0084] In this embodiment, a sealing ring is provided between the bottom insulator 9 and the high-voltage center through rod 3 , and a sealing ring is provided between the bottom insulator 9 and the bottom connecting tube 24 .

[0085] It should be noted that the sealing ring can prevent water from entering the interior of the cylinder 2 through the transducer window 1 .

[0086] In this embodiment, the load upper connecting end 5 and the load lower connecting end 4 have the same structure. Both the load upper connecting end 5 and the load lower connecting end 4 include a block and a threaded hole disposed on the block.

[0087] A threaded rod 12 is installed on the bottom surface of the transducer window 1 , the upper end of the threaded rod 12 is screwed into the threaded hole at the bottom of the transducer window 1 , and the load-lower connecting end 4 is installed on the upper end of the threaded rod 12 .

[0088] It should be noted that the threaded rod 12 can adjust its screw-in length on the bottom surface of the transducer window 1 , so as to facilitate clamping the metal wire between the load upper connecting end 5 and the load lower connecting end 4 .

[0089] In this embodiment, a portion of the outer wall of the upper middle insulator 7 , a portion of the outer wall of the lower middle insulator 8 , and a portion of the outer wall of the bottom insulator 9 are respectively in contact with the inner wall of the cylinder 2 .

[0090] It should be noted that after part of the outer wall of the upper middle insulator 7, part of the outer wall of the lower middle insulator 8, and part of the outer wall of the bottom insulator 9 are respectively abutted against the inner wall of the cylinder 2, the sealing performance of the connection between the upper middle insulator 7, the lower middle insulator 8, and the bottom insulator 9 and the cylinder 2 can be improved, and at the same time, their shaking can be avoided, thereby better supporting and fixing the high-voltage center through rod 3.

[0091] The device of the present invention realizes a completely rigid structure, and there is basically no need to consider the possibility of internal discharge ablation when passing a large current. At the same time, the design of multiple insulators can isolate the high-voltage center through rod 3 and the cylinder 2, preventing the high-voltage center through rod 3 from directly discharging to the cylinder 2 during discharge.

[0092] Conventional high-voltage center through-rod 3 will adopt a two-stage or three-stage structure. The high-voltage center through-rod 3 with a two-stage or three-stage structure will be more convenient to install and disassemble, and the diameter of the high-voltage center through-rod 3 can also be more convenient to control. The high-voltage center through-rod 3 with a two-stage or three-stage structure is suitable for a small capacitance value and a small energy storage, that is, the energy storage is between a few microfarads and hundreds of joules, the loop current amplitude is small, about 50kA, the duration is also short, not exceeding 100 microseconds, and the discharge ablation is not serious. Therefore, the two-stage or three-stage structure is formed into an integral high-voltage center through-rod 3 by crimping with an internal thread or a higher-strength thread. Such a setting can also enable the load device to obtain a longer service life. The two-stage or three-stage high-voltage center through rod 3 is connected by a spring or a thread. If the present invention adopts a two-stage or three-stage high-voltage center through rod 3, the huge amount of charge passing through the high-voltage center through rod 3 will quickly burn its spring or threaded connection, thereby causing the high-voltage center through rod 3 to directly discharge to the cylinder 2. In severe cases, it will cause the high-voltage center through rod 3 to fall off, thereby causing accidents such as premature scrapping of the load device.

[0093] Compared with the structure of the conventional high-voltage center through-rod 3, the diameter of the high-voltage center through-rod 3 of the present invention gradually becomes thicker from top to bottom, and the high-voltage center through-rod 3 has a larger volume and weight. The installation and disassembly steps must also be carried out according to the set process requirements, otherwise it will be difficult to install or disassemble. However, compared with the conventional high-voltage center through-rod 3, the high-voltage center through-rod 3 of the present invention is an integrated structure, which avoids the ablation problem existing at the connection of the two-stage or three-stage structure. The high-voltage center through-rod 3 of the present invention can be stably applied to the metal wire electric explosion with large energy storage, while the internal thread or spring crimping of the conventional high-voltage center through-rod 3 is easy to be rapidly ablated and deformed at the internal thread or spring crimping under the condition of large current for a long time and multiple uses, thereby contaminating the internal cavity and causing abnormal surface discharge or the through-rod directly discharging the shell. Therefore, the high-voltage center through-rod 3 of the present invention has high safety and reliability, and can meet the use requirements of the metal wire electric explosion with hundreds of kilojoules of capacitor energy storage.

[0094] like Figure 1 As shown, an embodiment of the present invention further provides an assembly method of a load device for electric explosion of a metal wire, using the above-mentioned load device for electric explosion of a metal wire, specifically comprising the following steps:

[0095] Before installing the high-voltage center through rod 3, the bottom insulator 9, the bottom connecting tube 24, the lower tightening ring 23, the upper tightening ring 21, and the balancing part 10, first install the sealing ring in the groove body corresponding to the side wall thereof.

[0096] The upper end of the high-voltage center through rod 3 is passed through the bottom insulator 9, so that the upper end surface of the first clamping section 31 of the high-voltage center through rod 3 abuts against the step surface of the step hole set at the lower end of the bottom insulator 9. Then the upper end of the bottom insulator 9 is passed through the bottom connecting tube 24, so that the lower surface of the third annular boss 241 of the bottom connecting tube 24 abuts against the upper surface of the abutting portion 92, and the lower fastening nut 34 is screwed into the second clamping section 33, so that the lower surface of the lower fastening nut 34 abuts against the upper end surface of the bottom insulator 9. The lower fastening nut 34 fixes the high-voltage center through rod 3 and the bottom insulator 9 relatively.

[0097] The lower end of the bottom connecting tube 24 and the upper end of the transducer window 1 are connected by threads, so that the step surface of the bottom insulator 9 and the step hole of the transducer window 1 are abutted.

[0098] The upper end of the bottom connecting tube 24 and the lower end of the lower tightening ring 23 are connected by threads.

[0099] Insert the lower end of the lower middle insulator 8 into the upper end of the lower tightening ring 23, and make the lower surface of the second annular boss 81 abut against the upper end surface of the lower tightening ring 23. Make the plug-in portion 91 and the lower fastening nut 34 located in the lower mounting step hole 82.

[0100] Insert the upper end of the lower middle insulator 8 into the lower end of the center outer tube 22, and connect the upper end of the lower tightening ring 23 and the lower end of the center outer tube 22 by threads, so that the upper surface of the second annular boss 81 abuts against the step surface of the step hole on the inner wall of the center outer tube 22.

[0101] The lower end of the upper middle insulator 7 is inserted into the upper end of the central outer cylinder 22 , and the lower surface of the first annular boss 71 is in contact with the step surface of the step hole on the inner wall of the central outer cylinder 22 .

[0102] The upper fastening nut 32 is screwed into the corresponding threaded section of the high-pressure center through rod 3 , so that the lower surface of the upper fastening nut 32 abuts against the step surface of the upper mounting step hole 72 .

[0103] The lower end of the upper tightening ring 21 and the upper end of the central outer cylinder 22 are connected by threads, and the lower end of the balancing part 10 and the upper end of the upper tightening ring 21 are connected by threads.

[0104] The lower end of the upper insulator 6 is inserted into the upper end of the balancing portion 10 , so that the lower surface of the engaging boss abuts against the upper surface of the annular surface 102 .

[0105] The top fixing cap 11 is mounted on the upper end of the high-voltage center through-rod 3 so that the lower surface of the top fixing cap 11 abuts against the upper end surface of the upper insulator 6 .

[0106] The assembly method of the load device of the present invention is simple to operate, and various components can be quickly and firmly installed together, thus meeting the application requirements of metal wire electric explosion.

[0107] The following are the steps to disassemble the load device:

[0108] Remove the top fixing cap 11, the upper insulator 6, the balancing part 10, the upper tightening ring 21, the upper fastening nut 32, the upper middle insulator 7, the central outer tube 22, the lower middle insulator 8, the lower tightening ring 23, the lower fastening nut 34, the transducer window 1, the bottom connecting tube 24, and the bottom insulator 9 in sequence to complete the disassembly of the load device.

[0109] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0110] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A load device for electric explosion of metal wire, characterized in that: It comprises a transducer window (1), a cylindrical body (2), a high-pressure central through rod (3), and a support block group; The transducer window (1) is a cylindrical structure with an opening at the upper end, and a side wall of the transducer window (1) is provided with an opening for the shock wave to pass through; The upper end of the transducer window (1) is connected to the lower end of the cylinder (2), and a load connection terminal (4) is provided at the bottom of the transducer window (1); the transducer window (1) and the cylinder (2) form a conductor for supplying power to the load connection terminal (4); The lower end of the high-voltage center through rod (3) is provided with a load upper connecting end (5), and the lower end of the high-voltage center through rod (3) passes through the cylinder (2) and extends into the transducer window (1); the load upper connecting end (5) and the load lower connecting end (4) are arranged at intervals, and a space for clamping a metal wire is formed between the load upper connecting end (5) and the load lower connecting end (4); The high-voltage center through rod (3) is supported in the cylinder (2) by the support block group; the support block group is made of insulating material; the support block group, the high-voltage center through rod (3) and the cylinder (2) are all sealed; the cylinder (2) comprises an upper tightening ring (21), a center outer cylinder (22), a lower tightening ring (23), and a bottom connecting cylinder (24) which are sequentially connected by threads; Sealing rings are provided at the connection points between the upper tightening ring (21) and the central outer cylinder (22), the central outer cylinder (22) and the lower tightening ring (23), and the lower tightening ring (23) and the bottom connecting cylinder (24); The outer walls of the upper tightening ring (21), the central outer cylinder (22), the lower tightening ring (23), and the bottom connecting cylinder (24) are all provided with blind holes (25), and the number of the blind holes (25) is more than one; The load upper connection end (5) and the load lower connection end (4) have the same structure, and both the load upper connection end (5) and the load lower connection end (4) comprise a block and a threaded hole provided on the block; A threaded rod (12) is installed on the bottom surface of the transducer window (1), the upper end of the threaded rod (12) is screwed into a threaded hole at the bottom of the transducer window (1), and the under-load connection end (4) is installed on the upper end of the threaded rod (12).

2. The loading device for electric explosion of metal wire according to claim 1, characterized in that: The support block group comprises an upper insulator (6), an upper middle insulator (7), a lower middle insulator (8), and a bottom insulator (9), all of which are mounted on the cylinder (2); The upper insulator (6), the upper middle insulator (7), the lower middle insulator (8), and the bottom insulator (9) are all provided with mounting holes at their centers, and the inner walls of the mounting holes abut against the side walls of the high-voltage center through rod (3).

3. The loading device for electric explosion of metal wire according to claim 2, characterized in that: The device further comprises a balancing portion (10), the balancing portion (10) comprising a cylindrical ring body (101) and a circular ring surface (102) arranged outside the upper end of the ring body (101), the width of the circular ring surface (102) being greater than the diameter of the ring body (101), and the circular ring surface (102) being perpendicular to the axis of the ring body (101); The lower end of the ring body (101) is screwed into a threaded hole provided at the upper end of the upper tightening ring (21); the lower end of the upper insulator (6) is sleeved inside the upper end of the ring body (101); a clamping boss is provided on the outer wall of the upper insulator (6); the lower surface of the clamping boss abuts against the upper surface of the annular surface (102); The upper end of the high-voltage center through rod (3) passes through the mounting hole at the center of the upper insulator (6) and is screwed into a threaded hole provided at the lower end of the top fixing cap (11); the lower surface of the top fixing cap (11) abuts against the upper surface of the upper insulator (6).

4. The loading device for electric explosion of metal wire according to claim 3, characterized in that: The outer wall of the upper middle insulator (7) is provided with a first annular boss (71), the upper surface of the first annular boss (71) abuts against the lower end surface of the upper tightening ring (21), and the lower surface of the first annular boss (71) abuts against the step surface of the step hole on the inner wall of the central outer cylinder (22); The outer wall of the lower middle insulator (8) is provided with a second annular boss (81), and the lower end of the lower middle insulator (8) is provided with a lower mounting step hole (82); The upper surface of the second annular boss (81) abuts against the step surface of the step hole on the inner wall of the central outer cylinder (22), and the lower surface of the second annular boss (81) abuts against the upper end surface of the lower tightening ring (23); The inner wall of the bottom connecting tube (24) is provided with a third annular boss (241); the upper surface of the third annular boss (241) abuts against the lower end surface of the lower middle insulator (8); The bottom insulator (9) comprises an inserting portion (91) and an abutting portion (92) arranged at the lower end of the inserting portion (91), and the outer diameter of the inserting portion (91) is smaller than the outer diameter of the abutting portion (92); The plug-in portion (91) passes through the third annular boss (241) and is inserted into the lower mounting step hole (82), and the lower surface of the third annular boss (241) abuts against the upper surface of the abutting portion (92); A first clamping section (31) is provided at the lower portion of the high-voltage central through rod (3), and an upper end surface of the first clamping section (31) abuts against a step surface of a step hole provided at the lower end of the bottom insulator (9).

5. The loading device for electric explosion of metal wire according to claim 4, characterized in that: An upper mounting step hole (72) is provided at the upper end of the upper middle insulator (7), an upper fastening nut (32) is installed at the portion of the high-voltage center through rod (3) located in the upper mounting step hole (72), and a lower surface of the upper fastening nut (32) abuts against a step surface of the upper mounting step hole (72); The portion of the high-voltage center through rod (3) located in the lower mounting step hole (82) is a second clamping section (33); the diameter of the second clamping section (33) is larger than the diameter of the portion of the high-voltage center through rod (3) located in the mounting hole of the lower middle insulator (8); the upper end surface of the second clamping section (33) abuts against the step surface of the lower mounting step hole (82); a lower fastening nut (34) is mounted on the second clamping section (33); the lower surface of the lower fastening nut (34) abuts against the upper end surface of the plug-in portion (91).

6. The loading device for electric explosion of metal wire according to claim 4, characterized in that: A sealing ring is provided between the bottom insulator (9) and the high-voltage central through rod (3), and a sealing ring is provided between the bottom insulator (9) and the bottom connecting tube (24).

7. The loading device for electric explosion of metal wire according to claim 2, characterized in that: Part of the outer wall of the upper middle insulator (7), part of the outer wall of the lower middle insulator (8), and part of the outer wall of the bottom insulator (9) respectively abut against the inner wall of the cylinder (2).

8. A method for assembling a load device for electric explosion of a metal wire, characterized in that: The use of the load device for electric explosion of metal wire as claimed in claim 5 comprises the following steps: Passing the upper end of the high-voltage center through rod (3) through the bottom insulator (9), and then passing the upper end of the bottom insulator (9) through the bottom connecting tube (24), screwing the lower fastening nut (34) into the second clamping section (33), so that the lower surface of the lower fastening nut (34) abuts against the upper end surface of the bottom insulator (9); The lower end of the bottom connecting tube (24) and the upper end of the transducer window (1) are connected by threads; the upper end of the bottom connecting tube (24) and the lower end of the lower tightening ring (23) are connected by threads; Insert the lower end of the lower middle insulator (8) into the interior of the upper end of the lower tightening ring (23), and make the lower surface of the second annular boss (81) abut against the upper end surface of the lower tightening ring (23); make the plug-in portion (91) and the lower tightening nut (34) located in the lower mounting step hole (82); Inserting the upper end of the lower middle insulator (8) into the lower end of the central outer cylinder (22), connecting the upper end of the lower tightening ring (23) and the lower end of the central outer cylinder (22) by means of threads, so that the upper surface of the second annular boss (81) abuts against the step surface of the step hole on the inner wall of the central outer cylinder (22); Inserting the lower end of the upper middle insulator (7) into the interior of the upper end of the central outer cylinder (22), and making the lower surface of the first annular boss (71) abut against the step surface of the step hole on the inner wall of the central outer cylinder (22); Screw the upper fastening nut (32) into the corresponding threaded section of the high-pressure center through rod (3) so that the lower surface of the upper fastening nut (32) abuts against the stepped surface of the upper mounting stepped hole (72); The lower end of the upper tightening ring (21) and the upper end of the central outer cylinder (22) are connected by threads, and the lower end of the balancing part (10) and the upper end of the upper tightening ring (21) are connected by threads; Inserting the lower end of the upper insulator (6) into the interior of the upper end of the balancing portion (10) so that the lower surface of the clamping boss abuts against the upper surface of the annular surface (102); The top fixing cap (11) is mounted on the upper end of the high-voltage center through rod (3) so that the lower surface of the top fixing cap (11) abuts against the upper end surface of the upper insulator (6).

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