Power supply rectifier

Abstract

The invention relates to the technical field of power supply equipment, in particular to a power supply rectifier which comprises a rectifier shell, a plurality of ventilation grooves are formed in the left side and the right side of the rectifier shell at equal intervals, a plurality of sets of rotating grooves are formed in the left side and the right side of the rectifier shell in a vertically symmetrical mode, and the number of each set of rotating grooves is two. L-shaped limiting plates are fixedly connected to the left side and the right side of the inner cavity of the rectifier shell in an up-down symmetry mode. The beneficial effects of the invention are that in a normal state, heat dissipation is carried out through the heat dissipation grooves in the rectifier shell, and when the temperature of the inner cavity of the rectifier shell is relatively high and heat dissipation cannot be carried out in time, the temperature in the rectifier shell can rapidly rise; when the temperature exceeds the temperature, the first thermoplastic elastomer is softened, and at the moment, the first thermoplastic elastomer cannot enable the transmission plate and the butt joint block to be relatively fixed.

Description

Technical Field

[0001] The invention relates to the technical field of power supply equipment, in particular to a power rectifier. Background Art

[0002] A power rectifier is a rectifying device that converts AC power into DC power. It has two main functions: first, it converts AC power into DC power and supplies it to the load or inverter after filtering; second, it provides charging voltage to the battery. Therefore, it also acts as a charger.

[0003] The transformer rectifier of the power supply passes a large current and a high frequency during operation, which will cause severe heating. After the power rectifier has been working for a long time, the internal temperature will rise quickly. If the heat dissipation device cannot dissipate heat in time, the excessive temperature may cause the internal circuit or device of the power rectifier to burn out, affecting the normal operation of the switching power supply, and even causing a fire in severe cases. The existing power rectifier does not have safety protection measures for this situation, there are certain safety hazards, and is not conducive to actual use. Summary of the invention

[0004] The object of the present invention is to provide a power rectifier to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a power rectifier, comprising a rectifier housing, a plurality of ventilation slots are equidistantly provided on the left and right sides of the rectifier housing, a plurality of groups of rotation slots are symmetrically provided on the left and right sides of the rectifier housing, the number of each group of rotation slots is two, the two rotation slots are symmetrically distributed at the upper and lower ends of the ventilation slot, and L-shaped limit plates are symmetrically fixedly connected to the left and right sides of the inner cavity of the rectifier housing; A sealing mechanism is snap-connected in the ventilation groove, a first trigger mechanism for driving the sealing mechanism to rotate is installed in the inner cavity of the rectifier shell, an unsealing mechanism is installed on the upper end of the first trigger mechanism, a rectangular groove is penetrated downwardly through the upper end of the rectifier shell, a fire extinguishing box is fixedly installed on the upper end of the rectifier shell, the lower end of the fire extinguishing box is open, a sealing plate is fixedly connected to the lower end of the inner cavity of the fire extinguishing box, a plurality of connecting grooves are penetrated downwardly and equidistantly through the upper end of the sealing plate, a fire extinguishing mechanism is installed in the fire extinguishing box, and a second trigger mechanism is fixedly installed symmetrically on the rear side of the inner cavity of the fire extinguishing box below the fire extinguishing mechanism.

[0006] As a preferred solution of the power rectifier described in the present invention, the sealing mechanism includes a rotating plate rotatably installed in the ventilation slot, the rear ends of the upper and lower sides of the rotating plate are fixedly connected with circular shafts, the rotating plate is rotatably connected to the ventilation slot through the circular shaft, the end of the circular shaft away from the rotating plate passes through the ventilation slot and extends into the rotating slot, the end of the circular shaft in the rotating slot is fixedly sleeved with an axe-shaped gear, the axe-shaped gear is rotatably connected to the rotating slot through the circular shaft, and multiple sealing mechanisms are symmetrically distributed on both sides of the first trigger mechanism.

[0007] As a preferred solution of the power rectifier described in the present invention, the first trigger mechanism includes a transmission plate installed in the inner cavity of the rectifier housing, the lower end of the transmission plate is penetrated by a docking groove, the left and right sides of the docking groove are symmetrically provided with grooves, the rear side of the inner cavity of the rectifier housing is fixedly connected with a docking block, the side of the docking block is penetrated by a first thermoplastic elastomer, the left and right ends of the transmission plate are symmetrically fixedly connected with concave plates, the two raised ends of the concave plate are symmetrically fixedly connected with a movable plate, a plurality of first trigger springs are equidistantly fixedly installed on the side of the concave plate, a plurality of tooth plates are equidistantly fixedly connected to the side of the movable plate close to the inner wall of the rectifier housing, the tooth plate is meshed with an axe-shaped gear, and the unsealing mechanism is fixedly installed on the upper end of the transmission plate.

[0008] As a preferred solution of the power rectifier of the present invention, the front end of the docking block extends into the docking groove, and the two ends of the first thermoplastic elastomer are respectively engaged with the two grooves.

[0009] As a preferred solution of the power rectifier described in the present invention, the concave plate is in sliding contact with the side wall of the inner cavity of the rectifier shell, the two protruding ends of the concave plate are respectively slidably connected to the inner sides of two L-shaped limit plates symmetrically arranged on the side walls of the inner cavity of the rectifier shell, and the movable plate is slidably connected to the inner sides of the L-shaped limit plates.

[0010] As a preferred solution of the power rectifier described in the present invention, the unsealing mechanism includes an unsealing plate fixedly installed on the upper end of the transmission plate, the upper end of the unsealing plate is equidistantly recessed downward to open a plurality of discharge grooves, the upper end of the unsealing plate is tightly fitted with the lower end of the sealing plate, the unsealing plate is arranged in a rectangular groove at the upper end of the rectifier housing, the upper end of the rectangular groove on the rectifier housing is symmetrically provided with sliding grooves, the left and right sides of the unsealing plate are symmetrically fixedly connected with slides, and the slides are slidably connected to the slide grooves back and forth.

[0011] As a preferred solution of the power rectifier described in the present invention, a guide light rod is symmetrically fixedly connected between the front and rear sides of the inner cavity of the fire extinguishing box, and the fire extinguishing mechanism includes two strip plates respectively sleeved on the two guide light rods, and a plurality of storage boxes are distributed between the two strip plates. The bottom of the storage box is provided with a plurality of feed troughs equidistantly penetrated, and the inner cavity of the storage box is installed with dry powder fire extinguishing agent, and a circular hole is penetrated from front to back at one end of the strip plate, and the guide light rod is inserted into the circular hole, and a tension spring is sleeved on the front end of the guide light rod, and a card slot is provided at the lower end of the strip plate, and the card slot is connected to the upper end of the second trigger mechanism.

[0012] As a preferred solution of the power rectifier described in the present invention, the strip plate is slidably connected to the guide light rod front and back, the two ends of the storage box are fixedly connected to the two strip plates respectively, the lower end of the storage box is in sliding contact with the upper end of the sealing plate, and the two ends of the tension spring are fixedly connected to the front side surface of the inner cavity of the fire extinguishing box and the front end of the strip plate respectively, and the tension spring is in a stretched state.

[0013] As a preferred solution of the power rectifier described in the present invention, the second trigger mechanism includes an L-shaped block fixedly installed on the rear side of the inner cavity of the fire extinguishing box, the lower end of the L-shaped block is recessed upward to form a shrinkage groove, the front and rear inner walls of the shrinkage groove are symmetrically provided with lifting grooves, the left and right inner walls of the shrinkage groove are symmetrically penetrated with limiting grooves, a locking block is installed in the shrinkage groove, the upper end of the locking block passes upward through the upper end of the L-shaped block and is engaged with the slot, the front and rear sides of the locking block are symmetrically fixedly connected with lifting blocks, the upper end of the lifting block is fixedly installed with a second trigger spring, and the side of the locking block is penetrated and inserted with a second thermoplastic elastomer.

[0014] As a preferred solution of the power rectifier described in the present invention, the lifting block is slidably connected to the lifting slot up and down, the upper end of the second trigger spring is abutted against the upper end of the lifting slot, the two ends of the second thermoplastic elastomer pass through the locking block and extend into the two limit slots, and the two ends of the second thermoplastic elastomer are respectively clamped with the two limit slots.

[0015] The beneficial effects of the present invention are: 1. Under normal conditions, heat is dissipated through the heat dissipation slots on the rectifier housing. When the inner cavity temperature of the rectifier housing is too high to dissipate heat in time, the temperature inside the rectifier housing will rise rapidly. When the temperature exceeds degrees Celsius, the first thermoplastic elastomer will soften. At this time, the first thermoplastic elastomer can no longer keep the transmission plate and the docking block relatively fixed. At this time, the first trigger mechanism moves forward, and the first trigger mechanism rotates the sealing mechanism, so that the rotating plate rotates outward along the ventilation slot and opens. At this time, the heat inside the rectifier housing can be dissipated outward through the ventilation slot, thereby quickly dissipating the heat inside the rectifier housing and preventing the internal temperature of the rectifier housing from being too high.

[0016] 2. When the transmission plate moves forward, it drives the discharge slot on the upper end of the unsealing plate to align with the connecting slot on the sealing plate. When the components in the rectifier housing emit a large amount of heat and cannot dissipate heat well or a short circuit occurs, the temperature in the rectifier housing will rise or a fire will occur. At this time, when the temperature in the rectifier housing exceeds degrees Celsius, the high temperature will soften the second thermoplastic elastomer, making it impossible for the second thermoplastic elastomer to engage with the limit slot, causing the second trigger mechanism to release the lock on the strip plate. At this time, under the action of the tension spring, the strip plate and the storage box move backward for a distance, and can move back and forth. The distance they move back and forth will slowly shorten until the strip plate and the storage box stop.

[0017] 3. In the process of the material storage box moving back and forth, when the material discharge trough at the lower end of the material storage box is connected with the connecting groove on the sealing plate, the dry powder fire extinguishing agent in the material storage box will fall downward along the material discharge trough, and the dry powder fire extinguishing agent will fall downward along the connecting groove and the material discharge trough to the inner cavity of the rectifier housing, extinguishing the components in the inner cavity of the rectifier housing or suppressing the fire, preventing the fire in the rectifier housing from spreading, and playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the power rectifier of the present invention; Figure 2 It is a schematic structural diagram of the sealing mechanism in the power rectifier of the present invention in an open state; Figure 3 It is a side sectional view of the local structure of the power rectifier of the present invention; Figure 4 It is a side cross-sectional view of the power rectifier structure of the present invention; Figure 5 It is a cross-sectional view of the structure of the discharge trough, the connecting trough and the lower trough in the power rectifier of the present invention in an aligned state; Figure 6 It is a schematic structural diagram of the first trigger mechanism and the sealing mechanism of the present invention; Figure 7 It is an exploded view of the first trigger mechanism and the sealing mechanism structure of the present invention; Figure 8 It is a cross-sectional view of the fire extinguishing box, the strip plate and the second trigger mechanism structure of the present invention; Fig. 9 for Figure 8 A schematic diagram of the structure enlargement in the middle; Fig.10 It is a front cross-sectional view of the fire extinguishing mechanism and the second triggering mechanism structure of the present invention; Fig.11 It is an exploded view of the rectifier housing, unsealing mechanism, fire extinguishing box and fire extinguishing mechanism structure of the present invention; Fig.12 It is an exploded view of the second trigger mechanism structure of the present invention.

[0019] In the figure: 1, rectifier housing; 11, ventilation slot; 12, rotating slot; 13, L-shaped limit plate; 14, slide slot; 2, rotating plate; 21, round shaft; 22, axe-shaped gear; 3, transmission plate; 31, docking slot; 32, groove; 33, docking block; 34, first thermoplastic elastomer; 35, concave plate; 36, first trigger spring; 37, movable plate; 38, tooth plate; 4, unsealing plate; 41, Discharge chute; 42, slide plate; 5, fire extinguishing box; 51, sealing plate; 52, connecting groove; 53, guide light rod; 6, strip plate; 61, round hole; 62, card slot; 63, tension spring; 64, storage box; 65, discharge chute; 7, L-shaped block; 71, contraction groove; 72, lifting groove; 73, limit groove; 8, locking block; 81, lifting block; 82, second trigger spring; 83, second thermoplastic elastomer. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only 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.

[0021] See also Figures 1 to 12 The present invention provides a technical solution: a power rectifier comprises a rectifier housing 1, a plurality of ventilation slots 11 are equidistantly provided on the left and right sides of the rectifier housing 1, a plurality of groups of rotation slots 12 are symmetrically provided on the left and right sides of the rectifier housing 1, and the number of each group of rotation slots 12 is two. The two rotation slots 12 are symmetrically distributed at the upper and lower ends of the ventilation slots 11, and the left and right sides of the inner cavity of the rectifier housing 1 are symmetrically fixedly connected with L-shaped limit plates 13, and the two ends of the L-shaped limit plates 13 are respectively fixedly connected to the side walls and the bottom of the inner cavity of the rectifier housing 1, and the end of the rotation slot 12 close to the inner side is connected to the inner cavity of the L-shaped limit plate 13, and one end of the L-shaped limit plate 13 is fixedly connected to the front end of the inner cavity of the rectifier housing 1, and the inner cavity of the rectifier housing 1 is divided into a strip-shaped cavity by the front end, the bottom, the side wall and the L-shaped limit plate 13 of the inner cavity of the rectifier housing 1, and the end of the rotation slot 12 close to the inner side is connected to the strip cavity; A plurality of heat dissipation slots are symmetrically provided on the left and right sides of the rectifier housing 1 for daily heat dissipation; A sealing mechanism is snap-connected in the ventilation groove 11, and the ventilation groove 11 is sealed by the provided sealing mechanism. A first trigger mechanism for driving the sealing mechanism to rotate is installed in the inner cavity of the rectifier housing 1, and an unsealing mechanism is installed on the upper end of the first trigger mechanism. A rectangular groove is penetrated downwardly through the upper end of the rectifier housing 1, and a fire extinguishing box 5 is fixedly installed on the upper end of the rectifier housing 1. The lower end of the fire extinguishing box 5 is open, and a sealing plate 51 is fixedly connected to the lower end of the inner cavity of the fire extinguishing box 5. A plurality of connecting grooves 52 are equidistantly penetrated downwardly through the upper end of the sealing plate 51. A fire extinguishing mechanism is installed in the fire extinguishing box 5, and a second trigger mechanism is fixedly installed symmetrically on the rear side of the inner cavity of the fire extinguishing box 5 below the fire extinguishing mechanism.

[0022] See also Figures 1 to 3 , Figure 6 , Figure 7 The sealing mechanism includes a rotating plate 2 rotatably installed in the ventilation groove 11, and the rear ends of the upper and lower sides of the rotating plate 2 are fixedly connected with round shafts 21. The rotating plate 2 is rotatably connected to the ventilation groove 11 through the round shaft 21. The end of the round shaft 21 away from the rotating plate 2 passes through the ventilation groove 11 and extends into the rotating groove 12. The end of the round shaft 21 in the rotating groove 12 is fixedly sleeved with an axe-shaped gear 22. The axe-shaped gear 22 is rotatably connected to the rotating groove 12 through the round shaft 21. Multiple sealing mechanisms are symmetrically distributed on both sides of the first trigger mechanism.

[0023] The round shaft 21 is driven to rotate by the axe-shaped gear 22, and the rotating plate 2 is driven to rotate when the round shaft 21 rotates. At this time, the rotating plate 2 rotates outward along the ventilation slot 11 and opens. At this time, the heat inside the rectifier housing 1 can be dissipated outward through the ventilation slot 11, thereby quickly dissipating the heat inside the rectifier housing 1.

[0024] See also Figure 3 , Figures 6 to 8 The first trigger mechanism includes a transmission plate 3 installed in the inner cavity of the rectifier housing 1, a docking groove 31 is penetrated through the lower end of the transmission plate 3, and grooves 32 are symmetrically opened on the left and right sides of the docking groove 31, a docking block 33 is fixedly connected to the rear side of the inner cavity of the rectifier housing 1, and a first thermoplastic elastomer 34 is penetrated through the side of the docking block 33, and a concave plate 35 is symmetrically fixedly connected to the left and right ends of the transmission plate 3, and the two raised ends of the concave plate 35 are symmetrically fixedly connected to the upper and lower sides of the movable plate 37, and a plurality of first trigger springs 36 are equidistantly fixedly installed on the side of the concave plate 35, and a plurality of tooth plates 38 are equidistantly fixedly connected to the side of the movable plate 37 close to the inner side wall of the rectifier housing 1, and the tooth plate 38 is meshed with the axe-shaped gear 22, and the number of the tooth plates 38 is the same as the number of the axe-shaped gear 22, and the unsealing mechanism is fixedly installed on the upper end of the transmission plate 3.

[0025] The front end of the docking block 33 extends into the docking groove 31, and the two ends of the first thermoplastic elastomer 34 are respectively engaged with the two grooves 32. The first thermoplastic elastomer 34 will soften at a temperature above 50 degrees Celsius. At room temperature, the first thermoplastic elastomer 34 can maintain its shape unchanged. The first thermoplastic elastomer 34 can be selected as a thermoplastic polyurethane elastomer rubber material.

[0026] In the initial state, the first thermoplastic elastomer 34 is engaged with the groove 32, so that the transmission plate 3 and the docking block 33 remain relatively fixed. At this time, the transmission plate 3 cannot move forward and backward. When the transmission plate 3 is in a fixed state, the two concave plates 35 at both ends are also fixed. At this time, the concave plate 35 squeezes the first trigger spring piece 36, so that the first trigger spring piece 36 is in a compressed state. The first trigger spring piece 36 always maintains elastic force on the concave plate 35, so that the concave plate 35 has a tendency to move forward.

[0027] The concave plate 35 is in sliding contact with the side wall of the inner cavity of the rectifier housing 1, and the two raised ends of the concave plate 35 are respectively slidably connected to the inner sides of the two L-shaped limit plates 13 symmetrically arranged on the side walls of the inner cavity of the rectifier housing 1, and the movable plate 37 is slidably connected to the inner sides of the L-shaped limit plates 13. The two raised ends of the concave plate 35 are respectively inserted into the adjacent strip cavities, and the raised ends of the concave plate 35 are slidably connected to the strip cavities. The movable plate 37 is arranged in the strip cavity, and the movable plate 37 is slidably connected to the strip cavity. The rear end of the strip cavity is sealed by the raised end of the concave plate 35 to prevent external dust from passing through the rotating groove 12 and the strip cavity into the inner cavity of the rectifier housing 1.

[0028] When the temperature of the inner cavity of the rectifier housing 1 is too high to dissipate heat in time, when the temperature exceeds 50 degrees Celsius, the first thermoplastic elastomer 34 will soften, and at this time, the first thermoplastic elastomer 34 can no longer keep the transmission plate 3 and the docking block 33 relatively fixed; Under the action of the elastic force of multiple first trigger springs 36, the two concave plates 35 are pushed to slide from back to front along the inner cavity of the rectifier housing 1, and the two concave plates 35 drive the transmission plate 3 to move forward. The raised ends of the concave plates 35 slide into the strip cavity formed between the L-shaped limit plate 13 and the inner side of the rectifier housing 1. At the same time, the concave plates 35 drive the movable plate 37 to slide from back to front along the strip cavity, and the movable plate 37 drives the tooth plate 38 to move forward. At this time, the tooth plate 38 drives the axe-shaped gear 22 to rotate along the rotating groove 12, so that the rotating plate 2 in the sealing mechanism rotates open.

[0029] See also Figure 3 and Fig.11The unsealing mechanism includes an unsealing plate 4 fixedly mounted on the upper end of the transmission plate 3. The upper end of the unsealing plate 4 is equidistantly recessed downward to open a plurality of discharge grooves 41. The upper end of the unsealing plate 4 is tightly fitted with the lower end of the sealing plate 51. In the initial state, the discharge grooves 41 of the unsealing plate 4 and the connecting grooves 52 of the sealing plate 51 are staggered. At this time, the discharge grooves 41 and the connecting grooves 52 are not connected up and down. The unsealing plate 4 is arranged in a rectangular groove at the upper end of the rectifier housing 1. The upper end of the rectangular groove on the rectifier housing 1 is symmetrically provided with slide grooves 14. The left and right sides of the unsealing plate 4 are symmetrically fixed with slide plates 42, and the slide plates 42 are slidably connected to the slide grooves 14 front and back.

[0030] When the transmission plate 3 moves forward, it drives the unsealing plate 4 to move forward along the rectangular groove. At the same time, the unsealing plate 4 drives the slide plate 42 to slide forward along the slide groove 14. The slide plate 42 cooperates with the slide groove 14, so that the unsealing plate 4 can move forward stably.

[0031] When the concave plate 35 abuts against the L-shaped limit plate 13, the concave plate 35 and the transmission plate 3 cannot move forward any further, and the first trigger mechanism stops moving, thereby causing the unsealing plate 4 to stop moving. At this time, the discharge groove 41 at the upper end of the unsealing plate 4 is aligned with the connecting groove 52 on the sealing plate 51, that is, the discharge groove 41 is connected to the connecting groove 52 up and down.

[0032] See also Figure 4 , Figure 5 , Figure 8 , Fig.10 and Fig.11 A guide light rod 53 is symmetrically fixedly connected between the front and rear sides of the inner cavity of the fire extinguishing box 5. The fire extinguishing mechanism includes two strip plates 6 respectively sleeved on the two guide light rods 53. A plurality of storage boxes 64 are distributed between the two strip plates 6. A plurality of feed troughs 65 are equidistantly penetrated at the bottom of the storage box 64. The inner cavity of the storage box 64 is installed with a dry powder fire extinguishing agent. A circular hole 61 is penetrated from front to back at one end of the strip plate 6. The guide light rod 53 is inserted into the circular hole 61. A tension spring 63 is sleeved at the front end of the guide light rod 53. A card slot 62 is provided at the lower end of the strip plate 6. The card slot 62 is connected to the upper end of the second trigger mechanism.

[0033] The strip plate 6 is slidably connected to the guide light rod 53 front and back, the two ends of the storage box 64 are fixedly connected to the two strip plates 6 respectively, the lower end of the storage box 64 is in sliding contact with the upper end of the sealing plate 51, and the two ends of the tension spring 63 are fixedly connected to the front side surface of the inner cavity of the fire extinguishing box 5 and the front end of the strip plate 6 respectively. The tension spring 63 is in a stretched state, and the tension spring 63 applies a tensile force to the strip plate 6.

[0034] In the initial state, the material discharge groove 65 at the lower end of the material storage box 64 and the connecting groove 52 on the sealing plate 51 are arranged alternately, and at this time, the sealing plate 51 seals the material discharge groove 65 at the lower end of the material storage box 64 .

[0035] When the second trigger mechanism releases the lock on the strip plate 6, the strip plate 6 slides forward along the guide light rod 53 under the action of the tension of the tension spring 63, and the strip plate 6 drives the storage box 64 to slide forward along the sealing plate 51. Under the inertia of the strip plate 6 and the storage box 64, the strip plate 6 compresses the tension spring 63 forward. At this time, the tension spring 63 applies an elastic force to the strip plate 6, so that the strip plate 6 and the storage box 64 move backward a certain distance, and so on, so that the strip plate 6 and the storage box 64 can move back and forth reciprocatingly, and the distance of the forward and backward movement is slowly shortened until the strip plate 6 and the storage box 64 stop.

[0036] During the forward and backward movement of the material storage box 64, the lower end of the material storage box 64 slides forward and backward along the upper end of the sealing plate 51. When the discharge trough 65 at the lower end of the material storage box 64 is connected with the connecting groove 52 on the sealing plate 51, the dry powder fire extinguishing agent in the material storage box 64 will fall downward along the discharge trough 65, and the dry powder fire extinguishing agent will fall downward along the connecting groove 52 and the discharge trough 41, so that the dry powder fire extinguishing agent can be sprinkled in the inner cavity of the rectifier housing 1, so as to extinguish the fire of the components in the inner cavity of the rectifier housing 1 or suppress the fire.

[0037] See also Figures 8 to 10 , Fig.12 The second trigger mechanism includes an L-shaped block 7 fixedly installed on the rear side of the inner cavity of the fire extinguishing box 5. The L-shaped block 7 is formed by splicing two L-shaped plates, and the two L-shaped plates are fixedly connected by bolts, etc. The lower end of the L-shaped block 7 is recessed upward and provided with a contraction groove 71. The front and rear inner side walls of the contraction groove 71 are symmetrically provided with lifting grooves 72. The left and right inner side walls of the contraction groove 71 are symmetrically penetrated to provide limiting grooves 73. A locking block 8 is installed in the contraction groove 71. The upper end of the locking block 8 passes through the upper end of the L-shaped block 7 upward and is engaged with the card slot 62. The locking block 8 is slidably connected to the L-shaped block 7 up and down. The front side of the upper end of the locking block 8 is sloped for easy installation. The front and rear sides of the locking block 8 are symmetrically fixedly connected with lifting blocks 81. The upper end of the lifting block 81 is fixedly provided with a second trigger spring piece 82. The side of the locking block 8 is penetrated and plugged with a second thermoplastic elastomer 83.

[0038] The lifting block 81 is connected to the lifting slot 72 by sliding up and down, the upper end of the second trigger spring piece 82 abuts against the upper end of the lifting slot 72, the second trigger spring piece 82 is initially in a compressed state, and the second trigger spring piece 82 applies an elastic force to the lifting block 81, so that the lifting block 81 tends to move downward, and the two ends of the second thermoplastic elastomer 83 pass through the locking block 8 and extend into the two limit slots 73, and the two ends of the second thermoplastic elastomer 83 are respectively engaged with the two limit slots 73.

[0039] The second thermoplastic elastomer 83 is a thermoplastic polyurethane elastomer. When the temperature of the second thermoplastic elastomer 83 exceeds 80 degrees Celsius, the second thermoplastic elastomer 83 will become soft, so that the second thermoplastic elastomer 83 cannot be engaged with the limiting groove 73. Under the action of the elastic force of the second trigger spring 82, the lifting block 81 slides downward along the lifting groove 72, and the lifting block 81 drives the locking block 8 to move downward, so that the upper end of the locking block 8 moves downward out of the slot 62, so that the second trigger mechanism releases the lock on the strip plate 6.

[0040] The second thermoplastic elastomer 83 has a higher resistance to high temperatures than the first thermoplastic elastomer 34 , and both can maintain their shapes at room temperature.

[0041] The front and rear sides of the locking block 8 do not contact the left and right inner sides of the shrinkage groove 71, and when the locking block 8 moves downward, the softened second thermoplastic elastomer 83 can bend and shrink into the shrinkage groove 71. Through the cooperation of the lifting block 81 and the lifting groove 72, the locking block 8 can slide downward stably.

[0042] Working principle: Under normal conditions, heat is dissipated through the heat dissipation grooves on the rectifier housing 1. When the inner cavity temperature of the rectifier housing 1 is too high to dissipate heat in time, the temperature inside the rectifier housing 1 will rise rapidly; when the temperature exceeds 50 degrees Celsius, the first thermoplastic elastomer 34 will soften. At this time, the first thermoplastic elastomer 34 can no longer keep the transmission plate 3 and the docking block 33 relatively fixed. Under the action of the elastic force of multiple first trigger springs 36, the two concave plates 35 are pushed to slide forward, and the two concave plates 35 drive the transmission plate 3 to move forward. The raised end of the concave plate 35 slides into the strip cavity formed between the L-shaped limit plate 13 and the inner side of the rectifier housing 1. At the same time, the concave plate 35 drives the movable plate 37 to slide from back to front along the strip cavity, and the movable plate 37 drives the tooth plate 38 to move forward.

[0043] At this time, the toothed plate 38 drives the axe-shaped gear 22 to rotate along the rotating groove 12, the axe-shaped gear 22 drives the circular shaft 21 to rotate, and the circular shaft 21 drives the rotating plate 2 to rotate, so that the rotating plate 2 rotates outward along the ventilation groove 11 and opens. At this time, the heat inside the rectifier housing 1 can be dissipated outward through the ventilation groove 11, thereby quickly dissipating the heat inside the rectifier housing 1.

[0044] When the transmission plate 3 moves forward, it drives the unsealing plate 4 forward, and the unsealing plate 4 drives the slide plate 42 to slide forward along the slide groove 14, so that the unsealing plate 4 can move forward stably. When the concave plate 35 contacts the L-shaped limit plate 13, the concave plate 35 cannot continue to move forward. At this time, the concave plate 35 and the transmission plate 3 stop, so that the unsealing plate 4 stops moving. At this time, the discharge groove 41 at the upper end of the unsealing plate 4 is aligned with the connecting groove 52 on the sealing plate 51, that is, the discharge groove 41 and the connecting groove 52 are connected up and down.

[0045] When the components in the rectifier housing 1 emit a large amount of heat or a short circuit occurs, causing the temperature in the rectifier housing 1 to rise or a fire to occur, when the temperature in the rectifier housing 1 exceeds 80 degrees Celsius, the high temperature will soften the second thermoplastic elastomer 83, thereby making it impossible for the second thermoplastic elastomer 83 to engage with the limiting groove 73. Under the action of the elastic force of the second trigger spring 82, the lifting block 81 is pushed to slide downward, and the lifting block 81 drives the locking block 8 to move downward, so that the upper end of the locking block 8 moves downward out of the slot 62, so that the second trigger mechanism releases the lock on the strip plate 6.

[0046] At this time, under the action of the tension of the tension spring 63, the strip plate 6 slides forward along the guide light rod 53, and the strip plate 6 drives the storage box 64 to slide forward along the sealing plate 51. Under the inertia of the strip plate 6 and the storage box 64, the strip plate 6 moves forward for a distance and then compresses the tension spring 63. At this time, the tension spring 63 applies an elastic force to the strip plate 6, so that the strip plate 6 and the storage box 64 move backward for a distance, and so on, so that the strip plate 6 and the storage box 64 can move back and forth reciprocatingly, and the distance they move back and forth will slowly shorten until the strip plate 6 and the storage box 64 stop.

[0047] During the process of the storage box 64 moving back and forth, when the discharge chute 65 at the lower end of the storage box 64 is connected with the connecting groove 52 on the sealing plate 51, the dry powder fire extinguishing agent in the storage box 64 will fall downward along the discharge chute 65, and the dry powder fire extinguishing agent will be sprinkled downward along the connecting groove 52 and the discharge chute 41 to the inner cavity of the rectifier housing 1, extinguishing the components in the inner cavity of the rectifier housing 1 or suppressing the fire, preventing the fire in the rectifier housing 1 from spreading, and playing a protective role.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power rectifier, comprising a rectifier housing (1), characterized in that: The left and right sides of the rectifier housing (1) are provided with a plurality of ventilation slots (11) at equal intervals, the left and right sides of the rectifier housing (1) are provided with a plurality of groups of rotation slots (12) symmetrically arranged in a vertical direction, the number of each group of rotation slots (12) is two, the two rotation slots (12) are symmetrically distributed in a vertical direction at the upper and lower ends of the ventilation slot (11), and the left and right sides of the inner cavity of the rectifier housing (1) are symmetrically fixedly connected in a vertical direction with L-shaped limit plates (13); A sealing mechanism is snap-connected in the ventilation slot (11); a first trigger mechanism for driving the sealing mechanism to rotate is installed in the inner cavity of the rectifier housing (1); an unsealing mechanism is installed at the upper end of the first trigger mechanism; a rectangular slot is penetrated downwardly through the upper end of the rectifier housing (1); a fire extinguishing box (5) is fixedly installed at the upper end of the rectifier housing (1); the lower end of the fire extinguishing box (5) is open; a sealing plate (51) is fixedly connected to the lower end of the inner cavity of the fire extinguishing box (5); a plurality of connecting grooves (52) are penetrated downwardly at equal intervals through the upper end of the sealing plate (51); a fire extinguishing mechanism is installed in the fire extinguishing box (5); and a second trigger mechanism is fixedly installed symmetrically on the rear side of the inner cavity of the fire extinguishing box (5) below the fire extinguishing mechanism.

2. A power rectifier according to claim 1, characterized in that: The sealing mechanism comprises a rotating plate (2) rotatably mounted in the ventilation slot (11); the rear ends of the upper and lower sides of the rotating plate (2) are fixedly connected to circular shafts (21); the rotating plate (2) is rotatably connected to the ventilation slot (11) via the circular shafts (21); the end of the circular shaft (21) away from the rotating plate (2) passes through the ventilation slot (11) and extends into the rotating slot (12); the end of the circular shaft (21) in the rotating slot (12) is fixedly sleeved with an axe-shaped gear (22); the axe-shaped gear (22) is rotatably connected to the rotating slot (12) via the circular shaft (21); and a plurality of sealing mechanisms are symmetrically distributed on both sides of the first trigger mechanism.

3. A power rectifier according to claim 2, characterized in that: The first trigger mechanism comprises a transmission plate (3) mounted in the inner cavity of the rectifier housing (1); a docking groove (31) is formed through the lower end of the transmission plate (3); grooves (32) are formed symmetrically on the left and right sides of the docking groove (31); a docking block (33) is fixedly connected to the rear side of the inner cavity of the rectifier housing (1); a first thermoplastic elastomer (34) is formed through the side of the docking block (33); concave plates (35) are symmetrically fixedly connected to the left and right ends of the transmission plate (3); two raised ends of the concave plate (35) are symmetrically fixedly connected to movable plates (37) in an upper and lower manner; a plurality of first trigger springs (36) are fixedly mounted at equal intervals on the side of the concave plate (35); a plurality of tooth plates (38) are fixedly mounted at equal intervals on a side of the movable plate (37) close to the inner wall of the rectifier housing (1); the tooth plates (38) are meshed with the axe-shaped gear (22); and the unsealing mechanism is fixedly mounted on the upper end of the transmission plate (3).

4. A power rectifier according to claim 3, characterized in that: The front end of the docking block (33) extends into the docking groove (31), and the two ends of the first thermoplastic elastomer (34) are respectively engaged with the two grooves (32).

5. A power rectifier according to claim 3, characterized in that: The concave plate (35) is in sliding contact with the side wall of the inner cavity of the rectifier housing (1), the two protruding ends of the concave plate (35) are respectively slidably connected to the inner sides of two L-shaped limit plates (13) symmetrically arranged in the upper and lower sides of the side wall of the inner cavity of the rectifier housing (1), and the movable plate (37) is slidably connected to the inner sides of the L-shaped limit plates (13).

6. A power rectifier according to claim 3, characterized in that: The unsealing mechanism comprises an unsealing plate (4) fixedly mounted on the upper end of the transmission plate (3); the upper end of the unsealing plate (4) is equidistantly recessed downwardly and has a plurality of discharge slots (41); the upper end of the unsealing plate (4) is tightly fitted with the lower end of the sealing plate (51); the unsealing plate (4) is arranged in a rectangular slot at the upper end of the rectifier housing (1); the upper end of the rectangular slot on the rectifier housing (1) is symmetrically provided with a slide slot (14); the left and right sides of the unsealing plate (4) are symmetrically fixedly connected with a slide plate (42); the slide plate (42) is slidably connected to the slide slot (14) in a forward and backward manner.

7. A power rectifier according to claim 1, characterized in that: A guide light rod (53) is symmetrically fixedly connected between the front and rear sides of the inner cavity of the fire extinguishing box (5). The fire extinguishing mechanism comprises two strip plates (6) respectively sleeved on the two guide light rods (53). A plurality of material storage boxes (64) are distributed between the two strip plates (6). A plurality of material discharge grooves (65) are equidistantly penetrated through the bottom of the material storage box (64). The inner cavity of the material storage box (64) is installed with a dry powder fire extinguishing agent. A circular hole (61) is penetrated from front to back at one end of the strip plate (6). The guide light rod (53) is inserted into the circular hole (61). A tension spring (63) is sleeved on the front end of the guide light rod (53). A clamping groove (62) is provided at the lower end of the strip plate (6). The clamping groove (62) is connected to the upper end of the second trigger mechanism.

8. A power rectifier according to claim 7, characterized in that: The strip plate (6) is slidably connected to the guide light rod (53) in a forward and backward manner, the two ends of the material storage box (64) are respectively fixedly connected to the two strip plates (6), the lower end of the material storage box (64) is in sliding contact with the upper end of the sealing plate (51), and the two ends of the tension spring (63) are respectively fixedly connected to the front side surface of the inner cavity of the fire extinguishing box (5) and the front end of the strip plate (6), and the tension spring (63) is in a stretched state.

9. A power rectifier according to claim 7, characterized in that: The second trigger mechanism comprises an L-shaped block (7) fixedly mounted on the rear side of the inner cavity of the fire extinguishing box (5); the lower end of the L-shaped block (7) is recessed upwards to form a contraction groove (71); the front and rear inner side walls of the contraction groove (71) are symmetrically provided with lifting grooves (72); the left and right inner side walls of the contraction groove (71) are symmetrically penetrated with limiting grooves (73); a locking block (8) is mounted in the contraction groove (71); the upper end of the locking block (8) passes through the upper end of the L-shaped block (7) upwards and is engaged with the clamping groove (62); the front and rear sides of the locking block (8) are symmetrically fixedly connected with lifting blocks (81); the upper end of the lifting block (81) is fixedly provided with a second trigger spring (82); and the side of the locking block (8) is penetrated and plugged with a second thermoplastic elastomer (83).

10. A power rectifier according to claim 9, characterized in that: The lifting block (81) is slidably connected to the lifting slot (72) up and down, the upper end of the second trigger spring (82) abuts against the upper end of the lifting slot (72), the two ends of the second thermoplastic elastomer (83) pass through the locking block (8) and extend into the two limiting slots (73), and the two ends of the second thermoplastic elastomer (83) are respectively engaged with the two limiting slots (73).

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