A flashover low partial discharge three-phase high voltage silicon rectifier device

Abstract

The invention discloses a three-phase high-voltage silicon rectifier device with low partial discharge and flashover, belonging to the field of high-voltage rectifier transformer equipment. The three-phase high-voltage silicon rectifier device with low partial discharge and flashover comprises a high-voltage silicon rectifier device. A group of heat dissipation fins are fixedly connected to the front and rear ends of the high-voltage silicon rectifier device. The deformation of the outer layer can be limited by an arc discharge protection mechanism coated on the outer layer of the three-phase high-voltage rectifier device, so that the outer layer of the three-phase high-voltage rectifier device is not easy to deform. At the same time, when the outer layer of the three-phase high-voltage rectifier device is deformed, the discharge device on the protective layer is triggered, so that the outer layer of the three-phase high-voltage rectifier device undergoes flashover discharge, and the discharge position is kept away from the deformation position, so as to balance the voltage difference of the outer layer of the three-phase high-voltage rectifier device, reduce the situation that the subsequent spontaneous flashover discharge occurs in the outer layer of the oil tank, and make the flashover discharge within a controllable area, so as to reduce the impact on the dust collector.

Description

Technical Field

[0001] The invention relates to the field of high-voltage rectifier transformer equipment, and more specifically to a flashover low partial discharge type three-phase high-voltage silicon rectifier equipment. Background Art

[0002] With the vigorous development of industry, enterprises are investing more and more in environmental protection equipment, which has greatly promoted the innovation and development of electrostatic precipitator power supply technology and the upgrading of dust removal power supply technology. In recent years, the successful development and application of medium frequency amplitude modulation, three-phase power supply, high-frequency switch and other power supplies have greatly improved the working efficiency of electrostatic precipitators and further promoted the development of dust removal power supply technology. At present, the mainstream product of power supply device for dust removal equipment on the market is thyristor-controlled single-phase high-voltage rectifier equipment, which is also the most widely used dust removal power supply equipment in China, accounting for more than 80% of the total use of dust collector electronic control equipment. Although this type of dust collector electronic control equipment is low-priced, mature in technology and has good flashover control capabilities, it is easy to cause serious three-phase power imbalance due to single-phase voltage regulation, which causes harmonic interference inside the high-voltage rectifier equipment. In addition, due to the small power factor and low active power, a large amount of power resources are wasted.

[0003] Therefore, at this stage, high-voltage rectifier equipment is gradually transitioning to three-phase high-voltage silicon rectifier equipment. When used in the electronic control process of the dust collector, the three-phase high-voltage silicon rectifier equipment can well realize the three-phase dynamic balance, and the three-phase high-voltage silicon rectifier equipment has less interference to the power grid during operation, which can reduce the investment in the power grid. Since the power factor of the three-phase high-voltage silicon rectifier equipment is relatively high, it can greatly improve the utilization rate of electricity. At the same time, the secondary current and voltage output waveform ripple of the three-phase high-voltage silicon rectifier equipment is smaller, the average corona voltage is increased, and the corona current density is increased. Under the same conditions of the electrostatic precipitator, compared with the thyristor-controlled single-phase high-voltage rectifier equipment, it can inject more electricity into the electrostatic precipitator, further improve the working efficiency of the electrostatic precipitator, and has better adaptability to working conditions such as high-concentration dust and high-resistance dust.

[0004] However, the oil tank of the existing three-phase high-voltage rectifier equipment expands and contracts with temperature changes. When local discharge or insulation breakdown occurs in the internal circuit equipment, the insulating oil in the oil tank will produce a large amount of gas, causing the oil tank of the three-phase high-voltage rectifier equipment to deform. This small deformation is not easy to be detected by technical personnel during inspection, but this deformation will continue to accumulate when flashover discharge occurs multiple times. When the deformation of the oil tank reaches a certain dangerous range, it is very dangerous to continue. Not only will it cause deformation and damage to the oil tank, it may also cause damage to the high-voltage rectifier equipment, and even endanger power grid-related equipment including dust removal equipment. Since the high-voltage rectifier equipment is connected to the dust collector, the flashover discharge may also affect the dust overflowing from the dust collector. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a flashover low local discharge three-phase high-voltage silicon rectifier equipment, which can limit the deformation of the outer layer through an arc discharge protection mechanism coated on the outer layer of the three-phase high-voltage rectifier equipment, so that the outer layer of the three-phase high-voltage rectifier equipment is not easy to deform, and the expansion and contraction of the oil tank of the three-phase high-voltage rectifier equipment with temperature changes are reduced. At the same time, when the outer layer of the three-phase high-voltage rectifier equipment is deformed, the discharge device on the protective layer is triggered to cause the outer layer of the three-phase high-voltage rectifier equipment to flashover discharge, and the discharge position is kept away from the deformation, so as to balance the voltage difference of the outer layer of the three-phase high-voltage rectifier equipment, reduce the subsequent spontaneous flashover discharge of the outer layer of the oil tank, and at the same time, make the flashover discharge within a controllable area, thereby reducing the impact on the dust collector.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A flashover low partial discharge three-phase high-voltage silicon rectifier device, comprising a high-voltage silicon rectifier device, a group of heat dissipation fins are fixedly connected at both ends of the high-voltage silicon rectifier device, two beam bases are fixedly connected at the lower end of the high-voltage silicon rectifier device, a rectifier base frame is provided inside the high-voltage silicon rectifier device, three amorphous alloy rectifier monomers are fixedly connected inside the rectifier base frame, the upper end of the amorphous alloy rectifier monomer is fixedly connected with a high-voltage terminal, the lower end of the rectifier base frame is fixedly connected with two separation pads, two arc discharge protection mechanisms are provided at both ends of the heat dissipation fins, and the arc discharge protection mechanism The structure includes a power transmission base, an arc-shaped elastic buckle cover and a central connecting column. The power transmission base is fixedly connected to the high-voltage silicon rectifier equipment. The arc-shaped elastic buckle cover is located on the side of the power transmission base away from the high-voltage silicon rectifier equipment. The lower end of the arc-shaped elastic buckle cover is fixedly connected to a tension spring. The end of the tension spring away from the arc-shaped elastic buckle cover is fixedly connected to the surface of the high-voltage silicon rectifier equipment. A flow hole is drilled at the upper end of the arc-shaped elastic buckle cover. A movable power transmission contact piece is arranged in the flow hole. The upper end of the movable power transmission contact piece is fixedly connected to the central connecting column. A bridge-shaped horizontal plate is sleeved on the central connecting column. By using an arc discharge protection mechanism coated on the outer layer of the three-phase high-voltage rectifier equipment, the deformation of the outer layer can be limited, so that the outer layer of the three-phase high-voltage rectifier equipment is not easy to deform, and the expansion and contraction of the oil tank of the three-phase high-voltage rectifier equipment with temperature changes can be reduced. At the same time, when the outer layer of the three-phase high-voltage rectifier equipment is deformed, the discharge device on the protective layer is triggered to cause the outer layer of the three-phase high-voltage rectifier equipment to flashover discharge, and the discharge position is kept away from the deformation, so as to balance the voltage difference of the outer layer of the three-phase high-voltage rectifier equipment, reduce the subsequent spontaneous flashover discharge of the outer layer of the oil tank, and keep the flashover discharge within a controllable area, thereby reducing the impact on the dust collector.

[0010] Furthermore, a fitting base frame is sleeved on the mobile power transmission contact piece, and two fixed limit frames are fixedly connected to the upper end of the fitting base frame, and a longitudinal sliding groove is cut in the middle of the fixed limit frame, and the left and right ends of the bridge-type horizontal plate are respectively slidably connected to the inner walls of the longitudinal sliding grooves of the two fixed limit frames. By adding the fitting base frame and the fixed limit frame on the mobile power transmission contact piece, it is convenient to limit the sliding range of the bridge-type horizontal plate.

[0011] Furthermore, the lower end of the bridge-shaped horizontal plate is fixedly connected with a positive contact column, and the upper sides of the left and right ends of the matching base are fixedly connected with negative contact bases, and the negative contact base matches the positive contact column. By adding a positive contact column at the lower end of the bridge-shaped horizontal plate, it is convenient to match the positive contact column with the negative contact base, so that the surface of the high-voltage silicon rectifier equipment can be flashed over and discharged quickly.

[0012] Furthermore, the negative contact base is fixedly connected to a first mutually exclusive magnetic plate at one end away from the mating base, and the positive contact column is fixedly connected to a second mutually exclusive magnetic block at one end close to the negative contact base, and the second mutually exclusive magnetic block has the same magnetic pole as the first mutually exclusive magnetic plate close to the positive contact column at one end away from the positive contact column. By matching the first mutually exclusive magnetic plate and the second mutually exclusive magnetic block added between the negative contact base and the positive contact column, the negative contact base and the positive contact column are in a separated state under normal conditions.

[0013] Furthermore, an arc shield is provided on the upper side of the central connecting column, and two shielding connecting rods are fixedly connected to the inner end of the arc shield, and the shielding connecting rods are fixedly connected to the upper end of the movable power transmission contact piece. By providing an arc shield on the central connecting column, it is convenient to shield the electric sparks generated by the flashover discharge in the central connecting column, and reduce the impact of the flashover discharge on the external environment.

[0014] Furthermore, the bridge-type horizontal plate is fixedly connected to one end away from the central connecting column with ten flashover discharge wires, of which six flashover discharge wires are distributed at the upper end of the bridge-type horizontal plate, and four are located on the left and right sides of the positive contact column at the lower end of the bridge-type horizontal plate. By adding the flashover discharge wires on the bridge-type horizontal plate, it is convenient to speed up the flashover discharge on the bridge-type horizontal plate, and at the same time, the arc generated by the flashover discharge is shunted, reducing the impact of the flashover discharge on the surrounding environment.

[0015] Furthermore, when the arc-shaped elastic buckle cover is installed on the outside of the high-voltage silicon rectifier device, the inside of the arc-shaped elastic buckle cover is first vacuumized to make the arc-shaped elastic buckle cover fit tightly with the outer layer of the high-voltage silicon rectifier device. By vacuumizing the arc-shaped elastic buckle cover, the tightness of the arc-shaped elastic buckle cover and the high-voltage silicon rectifier device can be enhanced.

[0016] Furthermore, a plastic shaping layer is coated on the side of the arc-shaped elastic buckle cover away from the high-voltage silicon rectifier device, and the plastic shaping layer is a thermosetting brittle substrate. By coating the plastic shaping layer on the outer layer of the arc-shaped elastic buckle cover, it is convenient for the plastic shaping layer on the surface to crack after the arc-shaped elastic buckle cover is deformed by force, so as to remind the staff of the abnormal situation of the rectifier device.

[0017] Furthermore, the plastic shaping layer on the outer side of the arc-shaped elastic buckle cover is filled with drawing fibers, and the drawing fibers are densely arranged in an undirected manner in the plastic shaping layer. The drawing fibers filled in the plastic shaping layer facilitate adhesion of the plastic shaping layer after the plastic shaping layer is deformed and cracks are generated, so that it is not easy to fall off from the arc-shaped elastic buckle cover.

[0018] Furthermore, a gel dust-adhesive layer is coated on the outside of the plastic shaping layer, the gel dust-adhesive layer comprises a substrate strip, a side of the gel dust-adhesive layer away from the arc-shaped elastic buckle cover is coated with a resin-type pressure-sensitive adhesive, and a side of the gel dust-adhesive layer close to the arc-shaped elastic buckle cover is coated with an acrylic pressure-sensitive adhesive. The gel dust-adhesive layer provided on the outside of the plastic shaping layer facilitates the adhesion of dust close to the arc-shaped elastic buckle cover, making it difficult for the dust to enter the inside of the arc shielding cover and affect the bridge-shaped horizontal plate and the flashover discharge wire in the arc shielding cover.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) This scheme can limit the deformation of the outer layer through the arc discharge protection mechanism wrapped around the outer layer of the three-phase high-voltage rectifier equipment, so that the outer layer of the three-phase high-voltage rectifier equipment is not easy to deform, and the expansion and contraction of the oil tank of the three-phase high-voltage rectifier equipment with temperature changes are reduced. At the same time, when the outer layer of the three-phase high-voltage rectifier equipment is deformed, the discharge device on the protective layer is triggered to cause the outer layer of the three-phase high-voltage rectifier equipment to flashover discharge, and the discharge position is kept away from the deformation, so as to balance the voltage difference of the outer layer of the three-phase high-voltage rectifier equipment, reduce the subsequent spontaneous flashover discharge of the outer layer of the oil tank, and at the same time, make the flashover discharge within a controllable area, thereby reducing the impact on the dust collector.

[0022] (2) A matching base frame is sleeved on the mobile power transmission contact piece, and two fixed limit frames are fixedly connected to the upper end of the matching base frame. A longitudinal sliding groove is cut in the middle of the fixed limit frame, and the left and right ends of the bridge-shaped horizontal plate are respectively slidably connected to the inner walls of the longitudinal sliding grooves of the two fixed limit frames. By adding the matching base frame and the fixed limit frame to the mobile power transmission contact piece, it is convenient to limit the sliding range of the bridge-shaped horizontal plate.

[0023] (3) A positive contact column is fixedly connected to the lower end of the bridge-shaped horizontal plate, and a negative contact base is fixedly connected to the upper sides of the left and right ends of the matching base, and the negative contact base matches the positive contact column. By adding a positive contact column at the lower end of the bridge-shaped horizontal plate, it is convenient to match the positive contact column and the negative contact base, so that the surface of the high-voltage silicon rectifier equipment can be flashed over and discharged quickly.

[0024] (4) A first mutually exclusive magnetic plate is fixedly connected to one end of the negative contact base away from the mating base, and a second mutually exclusive magnetic block is fixedly connected to one end of the positive contact column close to the negative contact base. The end of the second mutually exclusive magnetic block away from the positive contact column has the same magnetic pole as the end of the first mutually exclusive magnetic plate close to the positive contact column. By matching the first mutually exclusive magnetic plate and the second mutually exclusive magnetic block added between the negative contact base and the positive contact column, the negative contact base and the positive contact column are in a separated state under normal conditions.

[0025] (5) An arc shield is provided on the upper side of the central connecting column, and two shielding connecting rods are fixedly connected to the inner end of the arc shield, and the shielding connecting rods are fixedly connected to the upper end of the movable power transmission contact piece. By providing an arc shield on the central connecting column, it is convenient to shield the electric sparks generated by the flashover discharge in the central connecting column, thereby reducing the impact of the flashover discharge on the external environment.

[0026] (6) Ten flashover discharge wires are fixedly connected to the end of the bridge-type horizontal plate away from the central connecting column, of which six flashover discharge wires are distributed on the upper end of the bridge-type horizontal plate, and four are located on the left and right sides of the positive contact column at the lower end of the bridge-type horizontal plate. By adding flashover discharge wires on the bridge-type horizontal plate, it is convenient to speed up the flashover discharge on the bridge-type horizontal plate, and at the same time, the arc generated by the flashover discharge is shunted, reducing the impact of the flashover discharge on the surrounding environment.

[0027] (7) When the arc-shaped elastic snap-on cover is installed on the outside of the high-voltage silicon rectifier device, the inside of the arc-shaped elastic snap-on cover is first vacuumized to make the arc-shaped elastic snap-on cover fit tightly with the outer layer of the high-voltage silicon rectifier device. By vacuumizing the arc-shaped elastic snap-on cover, it is convenient to enhance the tightness of the arc-shaped elastic snap-on cover and the high-voltage silicon rectifier device.

[0028] (8) A plastic shaping layer is coated on the side of the arc-shaped elastic buckle cover away from the high-voltage silicon rectifier equipment, and the plastic shaping layer is a thermosetting brittle substrate. By coating the plastic shaping layer on the outer layer of the arc-shaped elastic buckle cover, it is easy for the plastic shaping layer on the surface to crack after the arc-shaped elastic buckle cover is deformed by force, so as to remind the staff of the abnormal situation of the rectifier equipment.

[0029] (9) The plastic shaping layer on the outer side of the arc-shaped elastic buckle cover is filled with drawing fibers, and the drawing fibers are densely arranged in an undirected manner in the plastic shaping layer. The drawing fibers filled in the plastic shaping layer facilitate adhesion of the plastic shaping layer after the plastic shaping layer is deformed and cracks are generated, so that the plastic shaping layer is not easily detached from the arc-shaped elastic buckle cover.

[0030] (10) A gel dust-adhesive layer is coated on the outside of the plastic shaping layer. The gel dust-adhesive layer includes a substrate strip. A resin-type pressure-sensitive adhesive is coated on the side of the gel dust-adhesive layer away from the arc-shaped elastic buckle cover, and an acrylic pressure-sensitive adhesive is coated on the side of the gel dust-adhesive layer close to the arc-shaped elastic buckle cover. The gel dust-adhesive layer provided on the outside of the plastic shaping layer facilitates the adhesion of dust close to the arc-shaped elastic buckle cover, making it difficult for the dust to enter the inside of the arc shield and affect the bridge-shaped horizontal plate and the flashover discharge wire in the arc shield. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front view of the high voltage silicon rectifier device of the present invention;

[0032] Figure 2A side view of a high voltage silicon rectifier device according to the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the arc discharge protection mechanism of the present invention;

[0035] Figure 5 is a cross-sectional view of the arc discharge protection mechanism of the present invention;

[0036] Figure 6 for Figure 5 The structural diagram at A in the middle;

[0037] Figure 7 The cross-sectional view of the arc discharge protection mechanism of the present invention with the tension spring portion removed;

[0038] Figure 8 A perspective view of the prior art;

[0039] Fig. 9 It is the internal circuit principle diagram of the present invention.

[0040] Description of the numbers in the figure:

[0041] 1 high-voltage silicon rectifier equipment, 2 heat sink fins, 3 crossbeam base, 4 rectifier base, 5 amorphous alloy rectifier monomer, 6 separation pad frame, 7 high-voltage terminal, 8 arc discharge protection mechanism, 9 power transmission base, 10 arc-shaped elastic buckle cover, 11 tension spring, 12 movable power transmission contact piece, 13 matching base, 14 fixed limit frame, 15 center connection column, 16 bridge-type horizontal plate, 17 positive contact column, 18 negative contact base, 19 arc shielding cover, 20 flashover discharge wire. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Embodiment 1:

[0046] See also Figure 1-9A flashover low partial discharge three-phase high-voltage silicon rectifier device, comprising a high-voltage silicon rectifier device 1, a group of heat dissipation fins 2 are fixedly connected at both ends of the high-voltage silicon rectifier device 1, two crossbeam bases 3 are fixedly connected at the lower end of the high-voltage silicon rectifier device 1, a rectifier base frame 4 is provided in the high-voltage silicon rectifier device 1, three amorphous alloy rectifier monomers 5 are fixedly connected in the rectifier base frame 4, a high-voltage terminal 7 is fixedly connected at the upper end of the amorphous alloy rectifier monomer 5, two partition pads 6 are fixedly connected at the lower end of the rectifier base frame 4, two arc discharge protection mechanisms 8 are provided at both ends of the heat dissipation fin 2, and the arc discharge protection mechanism 8 includes a power transmission base 9. An arcuate elastic buckle cover 10 and a central connecting column 15. The power transmission base 9 is fixedly connected to the high-voltage silicon rectifier device 1. The arcuate elastic buckle cover 10 is located on the side of the power transmission base 9 away from the high-voltage silicon rectifier device 1. A tension spring 11 is fixedly connected to the lower end of the arcuate elastic buckle cover 10. The end of the tension spring 11 away from the arcuate elastic buckle cover 10 is fixedly connected to the surface of the high-voltage silicon rectifier device 1. A flow hole is drilled at the upper end of the arcuate elastic buckle cover 10. A movable power transmission contact piece 12 is arranged in the flow hole. The upper end of the movable power transmission contact piece 12 is fixedly connected to the central connecting column 15. A bridge-shaped horizontal plate 16 is sleeved on the central connecting column 15. By using an arc discharge protection mechanism coated on the outer layer of the three-phase high-voltage rectifier equipment, the deformation of the outer layer can be limited, so that the outer layer of the three-phase high-voltage rectifier equipment is not easy to deform, and the expansion and contraction of the oil tank of the three-phase high-voltage rectifier equipment with temperature changes can be reduced. At the same time, when the outer layer of the three-phase high-voltage rectifier equipment is deformed, the discharge device on the protective layer is triggered to cause the outer layer of the three-phase high-voltage rectifier equipment to flashover discharge, and the discharge position is kept away from the deformation, so as to balance the voltage difference of the outer layer of the three-phase high-voltage rectifier equipment, reduce the subsequent spontaneous flashover discharge of the outer layer of the oil tank, and keep the flashover discharge within a controllable area, thereby reducing the impact on the dust collector.

[0047] See also Figure 5 The movable power transmission contact piece 12 is sleeved with a matching base frame 13, and the upper end of the matching base frame 13 is fixedly connected to two fixed limit frames 14, and a longitudinal sliding groove is cut in the middle of the fixed limit frame 14. The left and right ends of the bridge-shaped horizontal plate 16 are respectively slidably connected to the inner walls of the longitudinal sliding grooves of the two fixed limit frames 14. By adding the matching base frame 13 and the fixed limit frame 14 on the movable power transmission contact piece 12, it is convenient to limit the sliding range of the bridge-shaped horizontal plate 16.

[0048] See also Figure 5 The lower end of the bridge-shaped horizontal plate 16 is fixedly connected with a positive contact column 17, and the upper sides of the left and right ends of the matching base 13 are fixedly connected with negative contact bases 18, and the negative contact bases 18 match the positive contact columns 17. By adding the positive contact columns 17 at the lower end of the bridge-shaped horizontal plate 16, it is convenient to match the positive contact columns 17 with the negative contact bases 18, so that the surface of the high-voltage silicon rectifier device 1 can be flashed over and discharged quickly.

[0049] See also Figure 5 The negative contact base 18 is fixedly connected to the end away from the fitting base 13 with a first repulsive magnetic plate, and the positive contact column 17 is fixedly connected to the end close to the negative contact base 18 with a second repulsive magnetic block, and the end of the second repulsive magnetic block away from the positive contact column 17 has the same magnetic pole as the end of the first repulsive magnetic plate close to the positive contact column 17. By matching the first repulsive magnetic plate and the second repulsive magnetic block added between the negative contact base 18 and the positive contact column 17, the negative contact base 18 and the positive contact column 17 are in a separated state under normal conditions.

[0050] See also Figure 4 An arc shield 19 is provided on the upper side of the central connecting column 15, and two shielding connecting rods are fixedly connected to the inner end of the arc shield 19, and the shielding connecting rods are fixedly connected to the upper end of the movable power transmission contact piece 12. By providing the arc shield 19 on the central connecting column 15, it is convenient to shield the electric sparks generated by the flashover discharge in the central connecting column 15, and reduce the impact of the flashover discharge on the external environment.

[0051] See also Figure 6 , ten flashover discharge wires 20 are fixedly connected to one end of the bridge-type horizontal plate 16 away from the central connecting column 15, of which six flashover discharge wires 20 are distributed at the upper end of the bridge-type horizontal plate 16, and four are located on the left and right sides of the positive contact column 17 at the lower end of the bridge-type horizontal plate 16. By adding the flashover discharge wires 20 on the bridge-type horizontal plate 16, it is convenient to speed up the flashover discharge on the bridge-type horizontal plate 16, and at the same time, the arc generated by the flashover discharge is shunted, reducing the impact of the flashover discharge on the surrounding environment.

[0052] See also Figure 5 When the arc-shaped elastic buckle cover 10 is installed on the outside of the high-voltage silicon rectifier device 1, the inside of the arc-shaped elastic buckle cover 10 is first vacuumized to make the arc-shaped elastic buckle cover 10 fit tightly with the outer layer of the high-voltage silicon rectifier device 1. By vacuumizing the arc-shaped elastic buckle cover 10, it is convenient to enhance the tightness of the arc-shaped elastic buckle cover 10 and the high-voltage silicon rectifier device 1.

[0053] The arc-shaped elastic buckle cover 10 is coated with a plastic shaping layer on the side away from the high-voltage silicon rectifier device 1, and the plastic shaping layer is a thermosetting brittle substrate. By coating the plastic shaping layer on the outer layer of the arc-shaped elastic buckle cover 10, it is convenient for the plastic shaping layer on the surface to crack after the arc-shaped elastic buckle cover 10 is deformed by force, so as to remind the staff of the abnormal situation of the rectifier device.

[0054] The plastic shaping layer on the outer side of the arc-shaped elastic buckle cover 10 is filled with drawing fibers, and the drawing fibers are densely arranged in an undirected manner in the plastic shaping layer. The drawing fibers filled in the plastic shaping layer facilitate adhesion of the plastic shaping layer after the plastic shaping layer is deformed and cracks are generated, so that it is not easy to fall off from the arc-shaped elastic buckle cover 10.

[0055] The outside of the plastic shaping layer is coated with a gel dust-adhesive layer, which includes a substrate strip, and the side of the gel dust-adhesive layer away from the arc-shaped elastic buckle cover 10 is coated with a resin-type pressure-sensitive adhesive, and the side of the gel dust-adhesive layer close to the arc-shaped elastic buckle cover 10 is coated with an acrylic pressure-sensitive adhesive. The gel dust-adhesive layer provided on the outside of the plastic shaping layer facilitates the adhesion of dust close to the arc-shaped elastic buckle cover 10, making it difficult for the dust to enter the inside of the arc shield 19 and affect the bridge-shaped horizontal plate 16 and the flashover discharge wire 20 in the arc shield 19. The quality standard of this product complies with JB / T 9688-1999 "Rectifier Equipment for High-voltage Electrostatic Precipitator".

[0056] The present invention can limit the deformation of the outer layer through the arc discharge protection mechanism coated on the outer layer of the three-phase high-voltage rectifier equipment, so that the outer layer of the three-phase high-voltage rectifier equipment is not easy to deform, and the expansion and contraction of the oil tank of the three-phase high-voltage rectifier equipment with temperature changes are reduced. At the same time, when the outer layer of the three-phase high-voltage rectifier equipment is deformed, the discharge device on the protective layer is triggered to cause the outer layer of the three-phase high-voltage rectifier equipment to flashover discharge, and the discharge position is kept away from the deformation, so as to balance the voltage difference of the outer layer of the three-phase high-voltage rectifier equipment, reduce the subsequent spontaneous flashover discharge of the outer layer of the oil tank, and at the same time, make the flashover discharge within a controllable area, thereby reducing the impact on the dust collector.

[0057] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flashover low partial discharge three-phase high voltage silicon rectifier device, characterized in that: The invention comprises a three-phase high-voltage silicon rectifier device (1), wherein a group of heat dissipation fins (2) are fixedly connected at both the front and rear ends of the three-phase high-voltage silicon rectifier device (1), two crossbeam bases (3) are fixedly connected at the lower end of the three-phase high-voltage silicon rectifier device (1), a rectifier base frame (4) is provided inside the three-phase high-voltage silicon rectifier device (1), three amorphous alloy rectifier monomers (5) are fixedly connected inside the rectifier base frame (4), the upper ends of the amorphous alloy rectifier monomers (5) are fixedly connected to high-voltage terminals (7), the lower end of the rectifier base frame (4) is fixedly connected to two partitioning pads (6), and two arc discharge protection mechanisms (8) are provided at both the left and right ends of the heat dissipation fins (2), and the arc discharge protection mechanisms (8) are fixedly connected to the upper ends of the two partitioning pads (6). The electric protection mechanism (8) comprises an electric power transmission base (9), an arc-shaped elastic buckle cover (10) and a central connection column (15); the electric power transmission base (9) is fixedly connected to the three-phase high-voltage silicon rectifier device (1); the arc-shaped elastic buckle cover (10) is located on the side of the electric power transmission base (9) away from the three-phase high-voltage silicon rectifier device (1); a tension spring (11) is fixedly connected to the lower end of the arc-shaped elastic buckle cover (10); the tension spring (11) is fixedly connected to the surface of the three-phase high-voltage silicon rectifier device (1) at one end away from the arc-shaped elastic buckle cover (10); a flow hole is drilled at the upper end of the arc-shaped elastic buckle cover (10); a movable electric power transmission contact piece (12) is arranged in the flow hole; The upper end of the movable power transmission contact piece (12) is fixedly connected to the central connecting column (15), and the central connecting column (15) is sleeved with a bridge-shaped horizontal plate (16); the movable power transmission contact piece (12) is sleeved with a matching base frame (13), and the left and right ends of the matching base frame (13) are respectively fixedly connected with fixed limit frames (14), and a longitudinal sliding groove is cut in the middle of the fixed limit frame (14), and the right end of the bridge-shaped horizontal plate (16) on the left side of the central connecting column and the left end of the bridge-shaped horizontal plate (16) on the right side are respectively slidably connected to the inner walls of the longitudinal sliding grooves of the two fixed limit frames (14); the lower end of the bridge-shaped horizontal plate (16) is fixedly connected with a positive contact column (17), the upper sides of the left and right ends of the mating base (13) are fixedly connected with negative contact bases (18), and the negative contact bases (18) match the positive contact posts (17); the end of the bridge-shaped horizontal plate (16) away from the central connecting post (15) is fixedly connected with ten flashover discharge metal wires (20), of which six flashover discharge metal wires (20) are distributed on the upper end of the bridge-shaped horizontal plate (16), and four are located on the left and right sides of the positive contact post (17) at the lower end of the bridge-shaped horizontal plate (16); the arc-shaped elastic buckle cover (10) is coated with a plastic shaping layer on the side away from the three-phase high-voltage silicon rectifier device (1), and the plastic shaping layer is a thermosetting brittle substrate;The arc discharge protection mechanism wrapped on the outer layer of the three-phase high-voltage silicon rectifier equipment limits the deformation of the outer layer, making the outer layer of the three-phase high-voltage silicon rectifier equipment less likely to deform, reducing the expansion and contraction of the oil tank of the three-phase high-voltage silicon rectifier equipment with temperature changes, and triggering the discharge device on the protective layer when the outer layer of the three-phase high-voltage silicon rectifier equipment is deformed, causing the outer layer of the three-phase high-voltage silicon rectifier equipment to flash over and discharge, and keeping the discharge position away from the deformation. ; 2. A flashover low partial discharge three-phase high voltage silicon rectifier device according to claim 1, characterized in that: The negative contact base (18) is fixedly connected to a first mutually exclusive magnetic plate at one end away from the mating base (13), and the positive contact column (17) is fixedly connected to a second mutually exclusive magnetic block at one end close to the negative contact base (18), and the second mutually exclusive magnetic block has the same magnetic pole as the first mutually exclusive magnetic plate at one end away from the positive contact column (17) and one end close to the positive contact column (17).

3. A flashover low partial discharge three-phase high voltage silicon rectifier device according to claim 2, characterized in that: An arc shielding cover (19) is provided on the upper side of the central connecting column (15), and two shielding connecting rods are fixedly connected to the inner end of the arc shielding cover (19), and the shielding connecting rods are fixedly connected to the upper end of the movable power transmission contact piece (12).

4. A flashover low partial discharge three-phase high voltage silicon rectifier device according to claim 3, characterized in that: When the arc-shaped elastic snap-fit ​​cover (10) is installed on the outside of the three-phase high-voltage silicon rectifier device (1), the inside of the arc-shaped elastic snap-fit ​​cover (10) is firstly vacuumed so that the arc-shaped elastic snap-fit ​​cover (10) is tightly fitted to the outer layer of the three-phase high-voltage silicon rectifier device (1).

5. A flashover low partial discharge three-phase high voltage silicon rectifier device according to claim 4, characterized in that: The plastic shaping layer on the outer side of the arc-shaped elastic buckle cover (10) is filled with drawn fibers, and the drawn fibers are densely arranged in an undirected manner in the plastic shaping layer.

6. A flashover low partial discharge three-phase high voltage silicon rectifier device according to claim 5, characterized in that: The outer side of the plastic shaping layer is coated with a gel dust-adhesive layer, the gel dust-adhesive layer comprises a substrate strip, the side of the gel dust-adhesive layer away from the arc-shaped elastic buckle cover (10) is coated with a resin-type pressure-sensitive adhesive, and the side of the gel dust-adhesive layer close to the arc-shaped elastic buckle cover (10) is coated with an acrylic pressure-sensitive adhesive.

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