A protective transformer

Abstract

This invention relates to the field of electrical equipment technology and proposes a protective transformer, including an outer casing. A mounting base is fixedly connected to the bottom of the outer casing, a door is provided at the front end of the outer casing, a canopy is fixedly connected to the top of the outer casing, an exhaust fan is provided on the top of the outer casing, dustproof nets and cleaning mechanisms are provided on the sides of the outer casing, and a protective shell mechanism is provided inside the outer casing. This invention, by providing a protective shell mechanism, achieves better protection for electrical components through the multi-layered design of the protective shell and inner casing. Simultaneously, the inner casing can be limited by components such as slots, magnetic blocks, and locking blocks to prevent shaking. When it is necessary to install or remove electrical components inside the inner casing, pulling down the lever will automatically eject the inner casing outwards from the protective shell, facilitating operation by personnel.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and more specifically, to a protective transformer. Background Technology

[0002] A power transformer is a static electrical device used to convert a given alternating voltage (current) into one or more voltages (currents) of different values ​​but with the same frequency. When alternating current is applied to the primary winding, an alternating magnetic flux is generated. This alternating magnetic flux, through the magnetic conduction of the iron core, induces an alternating electromotive force (EMF) in the secondary winding. The magnitude of the induced EMF in the secondary winding is related to the number of turns; that is, the voltage is directly proportional to the number of turns. Its primary function is to transmit electrical energy; therefore, rated capacity is its main parameter. Rated capacity is a conventional value representing power; it characterizes the amount of electrical energy transmitted and is expressed in kVA or MVA. When the rated voltage is applied to the transformer, it is used to determine the rated current that does not exceed the temperature rise limit under specified conditions. A more energy-efficient power transformer is the amorphous alloy core distribution transformer, whose greatest advantage is its extremely low no-load loss. Ensuring the optimal no-load loss is a core issue to consider throughout the entire design process. When arranging the product structure, in addition to considering that the amorphous alloy core itself is not subject to external forces, the characteristic parameters of the amorphous alloy must also be accurately and reasonably selected during the calculation.

[0003] Patent document CN209896499U discloses a double-layer protective safety enclosure transformer, comprising: an outer enclosure, a rain shield, and a support rod; the top of the outer enclosure is provided with a rain shield, which is connected to the outer enclosure via the support rod; both ends of the rain shield are provided with cover plates, which are connected to the rain shield with bolts; mounting seats are provided on both sides of the bottom of the outer enclosure, and the mounting seats are connected to the outer enclosure by welding; a ventilation opening is provided on one side of the lower part of the outer enclosure. The outer casing has a vent, and a rain cover is installed above the vent. A dustproof net is installed on the inner side of the outer casing, and the dustproof net is connected to the outer casing by sliding. The outer casing has two inner casings. In the above application, slide rails are located at the four corners of the inner casings, and the slide rails have an L-shaped cross-section. The inner casings can be pulled out through the slide rails, which facilitates individual maintenance of the transformer equipment inside the casing. However, the limiting effect on the inner casings is poor, and they are prone to shaking during use, and the overall safety protection is poor. Summary of the Invention

[0004] This invention proposes a protective transformer that solves the problems mentioned in the above documents.

[0005] The technical solution of the present invention is as follows: A protective transformer includes an outer casing, a mounting base fixedly connected to the bottom of the outer casing, a door at the front end of the outer casing, a canopy fixedly connected to the top of the outer casing, an exhaust fan at the top of the outer casing, a dustproof net and a cleaning mechanism on the side of the outer casing, a protective shell mechanism inside the outer casing, and a slowing mechanism at the top of the inner part of the outer casing; the protective shell mechanism includes a protective shell and a sliding cylinder, the protective shell being fixedly connected to the inside of the outer casing, a compression spring being provided at the rear end of the inner part of the protective shell, and an inner casing being slidably connected to the inside of the protective shell via the compression spring, the bottom of the inner casing being open. The device includes a slot with a magnetic block fixedly connected inside. The bottom of the slide cylinder is fixedly connected to the bottom of the inner casing. A telescopic spring is installed inside the slide cylinder, and a locking block is slidably connected inside the slide cylinder via the telescopic spring. A pull rod is fixedly connected to the bottom of the locking block. By setting up a protective shell mechanism, the device achieves a multi-layered design of a protective shell and an inner casing, which better protects the electrical components inside. At the same time, the cooperation of components such as the slot, magnetic block, and locking block can limit the movement of the inner casing, making it less prone to shaking. When it is necessary to install or remove electrical components inside the inner casing, pulling down the pull rod will automatically pop the inner casing out of the protective shell for easy operation by the staff.

[0006] The pull rod passes through and slides through the bottom of the outer casing. The depth inside the slide cylinder is greater than the length of the locking block. Pulling the pull rod downwards can cause the locking block to move downwards, leave the slot, and retract completely into the slide cylinder.

[0007] The card block is made of ferromagnetic stainless steel, and the top of the card block is initially in contact with the bottom of the magnetic block. When the card slot and the slide cylinder are aligned, the magnetic force of the magnetic block will attract the card block to be in contact with it.

[0008] The protective shell is made of rubber. The compression spring is initially compressed. The rubber protective shell can reduce the impact force transmitted to the inner shell when the outer shell is impacted. When the compression spring rebounds, it will drive the inner shell to move towards the outer end of the protective shell.

[0009] The deceleration mechanism includes a connecting frame, a limiting rod, and a deceleration block. The top of the connecting frame and the limiting rod are fixedly connected to the inner top of the outer casing. A rotating rod is rotatably connected to the inner side of the connecting frame. Torsion springs are provided at both ends of the rotating rod, and a contact block is fixedly connected to the middle end of the rotating rod. The bottom of the deceleration block is fixedly connected to the top of the inner casing. By setting up the deceleration mechanism, the speed of the inner casing when it pops out of the protective shell can be reduced through the cooperation of components such as the rotating rod, torsion springs, contact blocks, and deceleration blocks. This prevents the inner casing from popping out of the protective shell too quickly, causing vibrations that could damage the electrical components on it, and further improves the overall stability. When the inner casing is pushed back, it will not be greatly affected.

[0010] In its initial state, the bottom of the contact block is close to the top of the deceleration block. The end of the limiting rod away from the top of the inner casing is close to the front end of the contact block. When the inner casing moves the deceleration block to the front or rear end, it will cause the deceleration block to contact the bottom of the contact block. The limiting rod can restrict the contact block from deflecting to the front.

[0011] The deceleration block is semi-cylindrical in shape and made of rubber. When the semi-cylindrical rubber deceleration block is squeezed against the contact block, it will generate a large resistance.

[0012] The cleaning mechanism includes a fixed block, a rotating shaft, and a rack B. The fixed block is fixedly connected to the side of the outer casing, and a sliding rod is fixedly connected to the front end of the fixed block. A cleaning brush is slidably connected to the surface of the sliding rod, and a return spring is sleeved on the surface of the sliding rod. A rack A is fixedly connected to the side of the cleaning brush. The rotating shaft passes through and is rotatably connected to the side of the outer casing. A main gear and a driven gear are fixedly connected to both ends of the rotating shaft, respectively. The rack B is fixedly connected to the side of the inner casing. By setting up the cleaning mechanism, during the process of the inner casing popping out of the protective shell, the cleaning brush is driven to move back and forth several times through the cooperation of the rack B, main gear, rotating shaft, driven gear, and other components. When the cleaning brush moves back and forth several times, its bristles clean the outer surface of the dustproof mesh, preventing the outer surface of the dustproof mesh from being blocked by dust and lint and affecting heat dissipation after long-term use.

[0013] The teeth on the main gear mesh with the teeth on the rack B, and the teeth on the driven gear mesh with the teeth on the rack A. When the rack B moves, it meshes with the teeth on the main gear, which will drive the main gear to rotate. When the driven gear rotates and its teeth mesh with the teeth on the rack A, it will drive the rack A to move towards the front end.

[0014] The driven gear is an incomplete gear. The two ends of the return spring are fixedly connected to the fixed block and the cleaning brush, respectively. When the driven gear rotates to the toothless part, it will disengage from the rack A. When the cleaning brush moves to the front end, the return spring will be stretched.

[0015] The working principle and beneficial effects of this invention are as follows:

[0016] 1. This invention, by setting up a protective shell mechanism, achieves better protection for electrical components through the multi-layered arrangement of the protective shell and inner box. At the same time, the inner box can be limited by components such as slots, magnetic blocks, and locking blocks to prevent it from shaking. When it is necessary to install or remove electrical components inside the inner box, pulling down the lever will automatically pop the inner box out of the protective shell, making it convenient for operators to operate.

[0017] 2. By incorporating a slowing mechanism, this invention achieves the goal of slowing down the speed at which the inner casing pops out of the protective shell through the cooperation of components such as a rotating rod, torsion spring, contact block, and deceleration block. This prevents the inner casing from popping out of the protective shell too quickly, causing vibrations that could damage the electrical components on it, thus further improving the overall stability. Furthermore, the inner casing is not significantly affected when it is pushed back.

[0018] 3. By incorporating a cleaning mechanism, this invention achieves the following: during the process of the inner housing ejecting outward from the protective shell, the cleaning brush moves back and forth several times through the cooperation of components such as rack B, main gear, rotating shaft, and driven gear. When the cleaning brush moves back and forth several times, its bristles clean the outer surface of the dustproof net, preventing the outer surface of the dustproof net from being blocked by dust and lint and affecting heat dissipation after long-term use. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a three-dimensional sectional view of the overall structure of the present invention;

[0022] Figure 3 This is a three-dimensional sectional view of part of the structure of the present invention;

[0023] Figure 4 This is a three-dimensional sectional view of the overall structure of the protective shell mechanism of the present invention;

[0024] Figure 5 This is a three-dimensional schematic diagram of a portion of the protective shell mechanism of the present invention;

[0025] Figure 6 This is a three-dimensional sectional view of a portion of the protective housing mechanism of the present invention;

[0026] Figure 7 For the present invention Figure 6 A three-dimensional magnified view of the structure of A in the middle;

[0027] Figure 8 This is a three-dimensional schematic diagram of the deceleration mechanism structure of the present invention;

[0028] Figure 9 This is a three-dimensional schematic diagram of the cleaning mechanism structure of the present invention.

[0029] In the diagram: 1. Outer casing; 2. Mounting base; 3. Door; 4. Top; 5. Exhaust fan; 6. Dustproof net; 7. Protective shell mechanism; 71. Protective shell; 72. Compression spring; 73. Inner casing; 74. Slot; 75. Magnetic block; 76. Slide cylinder; 77. Telescopic spring; 78. Locking block; 79. Pull rod; 8. Deceleration mechanism; 81. Connecting frame; 82. Rotating rod; 83. Torsion spring; 84. Contact block; 85. Limiting rod; 86. Deceleration block; 9. Cleaning mechanism; 91. Fixing block; 92. Slide rod; 93. Cleaning brush; 94. Return spring; 95. Gear A; 96. Rotating shaft; 97. Main gear; 98. Driven gear; 99. Gear B. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figures 1 to 8As shown, this embodiment proposes a protective transformer, including an outer casing 1. A mounting base 2 is fixedly connected to the bottom of the outer casing 1. A door 3 is provided at the front end of the outer casing 1. A roof 4 is fixedly connected to the top of the outer casing 1. An exhaust fan 5 is provided at the top of the outer casing 1. A dustproof net 6 and a cleaning mechanism 9 are provided on the sides of the outer casing 1. A protective shell mechanism 7 is provided inside the outer casing 1. A slowing mechanism 8 is provided at the top of the inside of the outer casing 1. The protective shell mechanism 7 includes a protective shell 71 and a sliding cylinder 76. The protective shell 71 is fixedly connected inside the outer casing 1. A compression spring 72 is provided at the rear end of the inside of the protective shell 71. The inside of the protective shell 71 is slidably connected by the compression spring 72. The inner housing 73 is connected to the outer housing 1, and the protective shell 71 is made of rubber. The compression spring 72 is initially compressed. The rubber protective shell 71 can reduce the impact force transmitted to the inner housing 73 when the outer housing 1 is impacted. When the compression spring 72 rebounds, it will drive the inner housing 73 to move outward towards the protective shell 71. The bottom of the inner housing 73 has a slot 74, and a magnetic block 75 is fixedly connected inside the slot 74. The bottom of the slide cylinder 76 is fixedly connected to the bottom of the inner side of the outer housing 1. The slide cylinder 76 has a telescopic spring 77 inside, and a locking block 78 is slidably connected inside the slide cylinder 76 through the telescopic spring 77. The locking block 78 is made of ferromagnetic stainless steel. In its initial state, the top of block 78 is in contact with the bottom of magnetic block 75. When the slot 74 and the slide cylinder 76 are aligned, the magnetic force of magnetic block 75 will attract block 78 to be in contact with it. A pull rod 79 is fixedly connected to the bottom of block 78. The pull rod 79 passes through and is slidably connected to the bottom of the outer casing 1. The depth inside the slide cylinder 76 is greater than the length of block 78. Pulling the pull rod 79 downwards can move block 78 downwards away from the slot 74 and completely retract it into the slide cylinder 76. The deceleration mechanism 8 includes a connecting frame 81, a limiting rod 85, and a deceleration block 86. The tops of the connecting frame 81 and the limiting rod 85 are fixedly connected to the top of the inner interior of the outer casing 1. A rotating rod 82 is rotatably connected to the inner side of the connecting frame 81. Both ends are provided with torsion springs 83, the middle end of the rotating rod 82 is fixedly connected to a contact block 84, the bottom of the deceleration block 86 is fixedly connected to the top of the inner box 73, the bottom of the contact block 84 is close to the top of the deceleration block 86 in the initial state, the end of the limiting rod 85 away from the top of the inner box 1 is close to the front end of the contact block 84, when the inner box 73 drives the deceleration block 86 to move to the front or rear end, it will drive the deceleration block 86 to contact the bottom of the contact block 84, the limiting rod 85 can limit the contact block 84 to deflect to the front, the deceleration block 86 is semi-cylindrical in shape, and the material of the deceleration block 86 is rubber, when the semi-cylindrical rubber deceleration block 86 is squeezed with the contact block 84, a large resistance will be generated.

[0033] In this embodiment, the electrical components are installed inside the inner housing 73. The rubber protective shell 71 reduces the impact force transmitted to the inner housing 73 when the outer housing 1 is impacted, thus protecting the electrical components. Turning on the exhaust fan 5 allows outside air to enter the outer housing 1 through the dust filter 6 and exit from the top, thereby dissipating heat. When installing or removing the electrical components, the pull rod 79 can be pulled down. Pulling the pull rod 79 downwards moves the locking block 78 downwards, away from the slot 74, and completely retracts it into the slide cylinder 76. When the locking block 78 leaves the slot 74, the compression spring 72 rebounds, causing the inner housing 73 to pop out of the protective shell 71, making it easier for operators to access the inside of the inner housing 73. After releasing the pull rod 79, the locking block 78 remains inside the slide cylinder 76. When the inner housing 73 is pushed back in so that the slot 74 and the slide cylinder 76 are aligned, the magnetic force of the magnet 75 attracts the locking block 78. When the inner housing 73 is in contact with the slot 74, the locking block 78 will limit the movement of the inner housing 73, making it less likely to shake. As the compression spring 72 rebounds and pushes the inner housing 73 outward toward the protective housing 71, the deceleration block 86 will contact the bottom of the contact block 84. Due to the presence of the limiting rod 85, the contact block 84 cannot deflect to the front. At this time, the deceleration block 86 will squeeze the contact block 84 to generate a certain resistance, slowing down the speed of the inner housing 73 when it pops out of the protective housing 71, preventing the inner housing 73 from popping out of the protective housing 71 too fast and causing vibration that could damage the electrical components on it. During the process of pushing the inner housing 73 in, the deceleration block 86 will contact the bottom of the contact block 84 again. At this time, the contact block 84 will deflect to the rear and will not squeeze the deceleration block 86 too much to generate resistance, so that the process of pushing the inner housing 73 in will not be greatly affected.

[0034] Example 2

[0035] like Figures 1-9As shown, based on the same concept as Embodiment 1 above, a second embodiment is also proposed. The cleaning mechanism 9 includes a fixed block 91, a rotating shaft 96, and a rack B99. The fixed block 91 is fixedly connected to the side of the outer housing 1. A slide rod 92 is fixedly connected to the front end of the fixed block 91. A cleaning brush 93 is slidably connected to the surface of the slide rod 92. A return spring 94 is sleeved on the surface of the slide rod 92. A rack A95 is fixedly connected to the side of the cleaning brush 93. The rotating shaft 96 passes through and is rotatably connected to the side of the outer housing 1. A main gear 97 and a driven gear 98 are fixedly connected to both ends of the rotating shaft 96, respectively. The rack B99 is fixedly connected to the inner housing. On the side of 73, the teeth on the main gear 97 mesh with the teeth on the rack B99, and the teeth on the driven gear 98 mesh with the teeth on the rack A95. When the rack B99 moves, it meshes with the teeth on the main gear 97, which will drive the main gear 97 to rotate. When the driven gear 98 rotates and its teeth mesh with the teeth on the rack A95, it will drive the rack A95 to move towards the front end. The driven gear 98 is an incomplete gear. The two ends of the return spring 94 are fixedly connected to the fixed block 91 and the cleaning brush 93, respectively. When the driven gear 98 rotates to the toothless part, it will disengage from the rack A95. When the cleaning brush 93 moves towards the front end, it will stretch the return spring 94.

[0036] In this embodiment, during the process of the inner box 73 popping out of the protective shell 71, the movement of the inner box 73 towards the front end will drive the rack B99 to move towards the front end. When the rack B99 moves, it meshes with the teeth of the main gear 97, which will drive the main gear 97 to rotate. The rotation of the main gear 97 will drive the rotating shaft 96 to rotate. The rotation of the rotating shaft 96 will drive the driven gear 98 to rotate. Initially, the driven gear 98 rotates and its teeth mesh with the teeth of the rack A95, which will drive the rack A95 to move towards the front end. The movement of the rack A95 towards the front end will drive the cleaning brush 93 to move towards the front end, and the return spring 94 will be stretched. When the driven gear 98 rotates to the toothless part and disengages from the rack A95, the return spring 94 will rebound, driving the cleaning brush 93 and the rack A95 to move towards the rear end to restore their original positions. This forms a cycle. When the cleaning brush 93 moves back and forth several times, its bristles will clean the outer surface of the dustproof net 6, preventing the outer surface of the dustproof net 6 from being blocked by dust and lint and affecting heat dissipation after long-term use.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective transformer, characterized in that, Includes an outer casing (1), with a mounting base (2) fixedly connected to the bottom of the outer casing (1), a door (3) provided at the front end of the outer casing (1), a canopy (4) fixedly connected to the top of the outer casing (1), an exhaust fan (5) provided at the top of the outer casing (1), a dustproof net (6) and a cleaning mechanism (9) provided on the side of the outer casing (1), a protective shell mechanism (7) provided inside the outer casing (1), and a slowing mechanism (8) provided at the top inside the outer casing (1). The protective housing mechanism (7) includes a protective housing (71) and a slide cylinder (76). The protective housing (71) is fixedly connected to the inside of the outer housing (1). A compression spring (72) is provided at the rear end of the inner part of the protective housing (71). An inner housing (73) is slidably connected to the inside of the protective housing (71) through the compression spring (72). A slot (74) is provided at the bottom of the inner housing (73). A magnetic block (75) is fixedly connected inside the slot (74). The bottom of the slide cylinder (76) is fixedly connected to the bottom of the inner part of the outer housing (1). A telescopic spring (77) is provided inside the slide cylinder (76). A locking block (78) is slidably connected inside the slide cylinder (76) through the telescopic spring (77). A pull rod (79) is fixedly connected to the bottom of the locking block (78). The pull rod (79) passes through and is slidably connected to the bottom of the outer casing (1), and the depth inside the slide cylinder (76) is greater than the length of the locking block (78); The card block (78) is made of ferromagnetic stainless steel, and the top of the card block (78) is initially attached to the bottom of the magnetic block (75). The protective shell (71) is made of rubber, and the compression spring (72) is initially in a compressed state.

2. A protective transformer according to claim 1, characterized in that, The deceleration mechanism (8) includes a connecting frame (81), a limiting rod (85), and a deceleration block (86). The top of the connecting frame (81) and the limiting rod (85) are fixedly connected to the top of the inner casing (1). A rotating rod (82) is rotatably connected to the inner side of the connecting frame (81). Torsion springs (83) are provided at both ends of the rotating rod (82). A contact block (84) is fixedly connected to the middle end of the rotating rod (82). The bottom of the deceleration block (86) is fixedly connected to the top of the inner casing (73).

3. A protective transformer according to claim 2, characterized in that, In its initial state, the bottom of the contact block (84) is close to the top of the deceleration block (86), and the end of the limiting rod (85) away from the top of the inner part of the outer casing (1) is close to the front end of the contact block (84).

4. A protective transformer according to claim 3, characterized in that, The deceleration block (86) is semi-cylindrical in shape and is made of rubber.

5. A protective transformer according to claim 4, characterized in that, The cleaning mechanism (9) includes a fixed block (91), a rotating shaft (96), and a rack B (99). The fixed block (91) is fixedly connected to the side of the outer housing (1). A sliding rod (92) is fixedly connected to the front end of the fixed block (91). A cleaning brush (93) is slidably connected to the surface of the sliding rod (92). A return spring (94) is sleeved on the surface of the sliding rod (92). A rack A (95) is fixedly connected to the side of the cleaning brush (93). The rotating shaft (96) passes through and is rotatably connected to the side of the outer housing (1). A main gear (97) and a driven gear (98) are fixedly connected to both ends of the rotating shaft (96). The rack B (99) is fixedly connected to the side of the inner housing (73).

6. A protective transformer according to claim 5, characterized in that, The teeth on the main gear (97) mesh with the teeth on the rack B (99), and the teeth on the driven gear (98) mesh with the teeth on the rack A (95).

7. A protective transformer according to claim 6, characterized in that, The driven gear (98) is an incomplete gear, and the two ends of the return spring (94) are fixedly connected to the fixed block (91) and the cleaning brush (93) respectively.

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