Overload protection device for distribution transformer of distribution line

Abstract

The invention discloses a distribution line distribution transformer overload protection device, and relates to the technical field of power equipment, the device comprises a mounting plate, a shell and a storage tank, one side of the shell and one side of the storage tank are fixedly connected with first plugging blocks, and two corresponding first limiting grooves are formed in each first plugging block; the device has the beneficial effects that a second rotating shaft and a worm can be driven to rotate by manually rotating a knob, then a first rotating shaft and a worm gear are driven to rotate, and then a bidirectional lead screw is driven to rotate, so that two third sliding blocks can be driven to correspondingly slide in third sliding grooves; therefore, the two second sliding blocks and the first sliding block correspondingly slide in the second sliding groove and the first sliding groove, the first sliding block is inserted into the first limiting groove or pulled out of the first limiting groove, and the first inserting block is conveniently fixed into the first inserting groove or pulled out of the first inserting groove. And the shell and the storage tank are convenient to disassemble and assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, in particular to an overload protection device for a distribution transformer of a distribution line. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil and the iron core (magnetic core). Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. During the installation of the transformer on the line, in order to protect the safety of the equipment and the line, an overload protection device is usually installed to prevent the main power line from overloading and causing the protector to overheat and be damaged.

[0003] Existing circuit overload protection devices are generally fixed and installed by fixing bolts. When the circuit overload protection device needs to be inspected and replaced, the fixing bolts need to be removed one by one, which reduces the working efficiency of the staff and increases the work intensity of the staff. For this reason, we propose an overload protection device for the distribution transformer of the distribution line. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an overload protection device for a distribution transformer of a distribution line, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an overload protection device for a distribution transformer in a distribution line, comprising a mounting plate, a shell, and a storage tank, wherein one side of the shell and the storage tank are fixedly connected with a first plug-in block, two corresponding first limiting grooves are provided inside the first plug-in block, two corresponding first plug-in grooves are provided inside the mounting plate, two corresponding first slide grooves are provided inside the mounting plate and outside the first plug-in groove, a first slider is slidably connected inside the first slide groove, the first slider is plugged into the inside of the first limiting groove, two corresponding second plug-in grooves are provided inside the shell, a second plug-in block is plugged into the inside of the second plug-in groove, a fourth slide groove is provided inside the shell and located on one side of the second plug-in groove, a fourth slide groove is slidably connected inside the fourth slide groove, a second limiting groove is provided inside the second plug-in block, the fourth slider is plugged into the inside of the second limiting groove, and a shell cover is fixedly connected between the two second plug-in blocks.

[0006] Optionally, a second slide groove is provided inside the mounting plate and on one side of the first slide groove, and a third slide groove is provided inside the mounting plate and on one side of the two groups of second slide grooves, the third slide groove is rotatably connected inside with a bidirectional screw rod, and the third slide groove is slidably connected with two corresponding third sliders, the bidirectional screw rod passes through the two third sliders and is threadedly connected thereto, one side of the third slider is fixedly connected with the second slider, the second slider is slidably connected to the inside of the second slide groove, and the second slider is fixedly connected to the first slider, and the cooperation between the second slide groove, the second slider, the third slide groove, the bidirectional screw rod and the third slider can drive the two first sliders to slide inside the first slide groove, thereby facilitating fixing the first plug-in block to the inside of the first plug-in groove.

[0007] Optionally, two corresponding internal grooves are opened inside the mounting plate, and the internal rotation of the internal groove is connected to a first rotating shaft, and a worm wheel is fixedly connected to the outside of the first rotating shaft and located inside the internal groove, and the internal rotation of the internal groove is connected to a second rotating shaft, and a worm is fixedly connected to the outside of the second rotating shaft and located inside the internal groove, and the worm and the worm wheel are meshed with each other, one end of the first rotating shaft extends to the inside of the third sliding groove and is fixedly connected to the bidirectional screw, and one end of the second rotating shaft is fixedly connected to a knob, and the sliding mechanism can operate normally through the mutual cooperation of the first rotating shaft, the worm wheel, the second rotating shaft and the worm.

[0008] Optionally, a fifth sliding groove is provided inside the shell and on one side of the fourth sliding groove, and a fifth sliding groove is fixedly connected to one side of the fourth sliding block, the fifth sliding block is slidably connected to the inside of the fifth sliding groove, and a push rod is fixedly connected to one side of the fifth sliding block, one end of the push rod extends to the outside of the shell, and the fifth sliding block and the fourth sliding block can be limited by the fifth sliding groove so that the fourth sliding block is plugged into the inside of the second limiting groove, thereby fixing the second plug-in block to the inside of the second plug-in groove, and the fifth sliding block and the fourth sliding block can be pushed by the push rod to slide toward the inside of the fifth sliding groove and the fourth sliding groove, and the fourth sliding block can be pulled out from the inside of the second limiting groove, thereby releasing the limitation on the second plug-in block and facilitating the removal of the shell cover.

[0009] Optionally, a plurality of first telescopic springs are arranged inside the fifth slide groove, one end of the first telescopic spring is fixedly connected to the inner wall of the fifth slide groove, and the other end of the first telescopic spring is fixedly connected to one side of the fifth slider.

[0010] Optionally, the shell is fixedly connected to an installation box inside, a controller is fixedly installed inside the installation box, a first electric telescopic rod is fixedly installed inside the controller, a fixed plate is fixedly connected to the installation box inside, the fixed plate is slidably connected to the sliding rod inside, a second telescopic spring is arranged on the outside of the sliding rod, one end of the second telescopic spring is fixedly connected to one side of the fixing plate, the other end of the second telescopic spring is fixedly connected to the outside of the sliding rod, one side of the sliding rod is fixedly connected to a first hook, a second hook is fixedly connected to the installation box inside, a second electric telescopic rod is fixedly installed inside the installation box, and the output of the second electric telescopic rod An insulating card block is fixedly connected to the end, the second hook, the insulating card block and the first hook cooperate with each other, the first electric telescopic rod and the sliding rod cooperate with each other, through the cooperation of the controller, the first electric telescopic rod, the fixed plate, the sliding rod, the second telescopic spring, the first hook, the second hook and the second electric telescopic rod, when the induced current of the current transformer exceeds the difference, the first electric telescopic rod is started to extend through the controller, the sliding rod is pushed to move to make the second telescopic spring contract, and then the first hook is pushed to separate from the second hook, and the second electric telescopic rod is started to extend at the same time, and the insulating card block is pushed to move between the first hook and the second hook, so as to cut off the power and improve the protection of the transformer.

[0011] Optionally, a heat-sensitive sensor is provided inside the installation box, a control device is provided outside the storage tank, a connecting pipe is fixedly connected to the inside of the storage tank, the other end of the connecting pipe extends to the inside of the shell, an electric valve is provided inside the storage tank, and the control device is electrically connected to the heat-sensitive sensor and the electric valve. Through the mutual cooperation of the heat-sensitive sensor, the storage tank, the control device and the connecting pipe, when a fire occurs inside the shell and the temperature exceeds a preset value of the heat-sensitive sensor, the electric valve of the storage tank can be activated by the heat-sensitive sensor, and the fire extinguishing agent stored in the storage tank can be sprayed into the inside of the shell through the connecting pipe, thereby extinguishing the fire and reducing losses.

[0012] The present invention provides an overload protection device for a distribution transformer of a distribution line, which has the following beneficial effects:

[0013] 1. The overload protection device of the distribution transformer of the distribution line can drive the second rotating shaft and the worm to rotate by manually turning the knob, and then drive the first rotating shaft and the worm wheel to rotate, and then drive the bidirectional lead screw to rotate, so as to drive the two third sliders to slide correspondingly inside the third slide groove, so that the two second sliders and the first slider slide correspondingly inside the second slide groove and the first slide groove, and the first slider is inserted into the inside of the first limiting groove or the first slider is pulled out from the inside of the first limiting groove, so that the first plug-in block is conveniently fixed to the inside of the first plug-in groove or the first plug-in block is pulled out from the inside of the first plug-in groove, so that the shell and the storage tank can be disassembled and assembled, and the shell and the storage tank can be inspected and replaced, which improves the convenience of assembly and disassembly of the overload protection device of the distribution transformer of the distribution line, and improves the working efficiency of the staff.

[0014] 2. The overload protection device for the distribution transformer of the distribution line can start the electric valve through the control device to spray the fire extinguishing agent in the storage tank to the inside of the shell through the connecting pipe when a fire occurs inside the shell due to a short circuit or other reasons, and the high temperature generated exceeds the preset value of the heat-sensitive sensor, so as to extinguish the fire inside the shell and reduce losses. By pushing the two push rods, the fifth slider and the fourth slider are driven to slide into the inside of the fifth slide groove and the fourth slide groove, the first telescopic spring is contracted, and the fourth slider is pulled out from the inside of the second limit groove, so as to facilitate the disassembly and assembly of the shell cover, thereby improving the convenience of assembly and disassembly of the overload protection device for the distribution transformer of the distribution line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the internal structure of the mounting plate of the present invention;

[0017] Figure 3 It is a schematic diagram of the internal structure of the housing of the present invention;

[0018] Figure 4 It is a schematic diagram of the internal structure of the installation box of the present invention.

[0019] In the figure: 1, mounting plate; 2, housing; 3, storage tank; 4, first plug-in slot; 5, first plug-in block; 6, first limiting slot; 7, first slide slot; 8, first slider; 9, second slide slot; 10, second slider; 11, third slide slot; 12, two-way screw; 13, third slider; 14, internal slot; 15, first rotating shaft; 16, worm gear; 17, second rotating shaft; 18, worm; 19, housing cover; 20, second plug-in block; 21, second limiting slot; 22, first Second plug-in slot; 23, fourth slide slot; 24, fourth slider; 25, fifth slide slot; 26, fifth slider; 27, push rod; 28, first telescopic spring; 29, installation box; 30, controller; 31, first electric telescopic rod; 32, fixing plate; 33, sliding rod; 34, second telescopic spring; 35, first hook; 36, second hook; 37, second electric telescopic rod; 38, insulating block; 39, thermal sensing device; 40, control device; 41, connecting pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figures 1 to 4 The present invention provides a technical solution: an overload protection device for a distribution transformer of a distribution line, comprising a mounting plate 1, a shell 2, and a storage tank 3. A first plug-in block 5 is fixedly connected to one side of the shell 2 and the storage tank 3. Two corresponding first limiting grooves 6 are provided inside the first plug-in block 5. Two corresponding first plug-in grooves 4 are provided inside the mounting plate 1. Two corresponding first slide grooves 7 are provided inside the mounting plate 1 and outside the first plug-in groove 4. A first slider 8 is slidably connected inside the first slide groove 7. The first slider 8 is plugged into the inside of the first limiting groove 6. Two corresponding second plug-in grooves 22 are provided inside the shell 2. A second plug-in block 20 is plugged into the inside of the second plug-in groove 22. A fourth slide groove 23 is provided inside the shell 2 and located on one side of the second plug-in groove 22. A fourth slider 24 is slidably connected inside the fourth slide groove 23. A second limiting groove 21 is provided inside the second plug-in block 20. The fourth slider 24 is plugged into the inside of the second limiting groove 21. A shell cover 19 is fixedly connected between the two second plug-in blocks 20.

[0022] A second slide groove 9 is provided inside the mounting plate 1 and on one side of the first slide groove 7. A third slide groove 11 is provided inside the mounting plate 1 and on one side of the two groups of second slide grooves 9. A bidirectional screw rod 12 is rotatably connected inside the third slide groove 11. Two corresponding third sliders 13 are slidably connected inside the third slide groove 11. The bidirectional screw rod 12 passes through the two third sliders 13 and is threadedly connected thereto. A second slider 10 is fixedly connected to one side of the third slider 13. The second slider 10 is slidably connected to the inside of the second slide groove 9. The second slider 10 is fixedly connected to the first slider 8. Through the cooperation of the second slide groove 9, the second slider 10, the third slide groove 11, the bidirectional screw rod 12 and the third slider 13, the two first sliders 8 can be driven to slide inside the first slide groove 7, thereby facilitating the first plug-in block 5 to be fixed inside the first plug-in slot 4.

[0023] Two corresponding internal grooves 14 are provided inside the mounting plate 1, and a first rotating shaft 15 is rotatably connected inside the internal groove 14, and a worm wheel 16 is fixedly connected to the outside of the first rotating shaft 15 and located inside the internal groove 14, and a second rotating shaft 17 is rotatably connected inside the internal groove 14, and a worm 18 is fixedly connected to the outside of the second rotating shaft 17 and located inside the internal groove 14, and the worm 18 and the worm wheel 16 are meshed with each other, one end of the first rotating shaft 15 extends to the inside of the third sliding groove 11 and is fixedly connected to the bidirectional screw 12, and one end of the second rotating shaft 17 is fixedly connected to a knob, which is connected to the first rotating shaft 15 through the first rotating shaft 15 The mutual cooperation of the worm wheel 16, the second rotating shaft 17 and the worm 18 can enable the normal operation of the sliding mechanism. When in use, the knob is turned to drive the second rotating shaft 17 and the worm 18 to rotate, and then the first rotating shaft 15 and the worm wheel 16 are driven to rotate, and then the bidirectional screw 12 is driven to rotate, and then the two third sliders 13 are driven to slide inside the third slide groove 11, and then the two second sliders 10 are driven to slide correspondingly inside the second slide groove 9, and then the two first sliders 8 are driven to slide inside the first slide groove 7, so as to fix the first plug-in block 5 inside the first plug-in groove 4;

[0024] A fifth slide groove 25 is provided inside the shell 2 and on one side of the fourth slide groove 23. A fifth slide groove 26 is fixedly connected to one side of the fourth slide block 24. The fifth slide block 26 is slidably connected to the inside of the fifth slide groove 25. A push rod 27 is fixedly connected to one side of the fifth slide block 26. One end of the push rod 27 extends to the outside of the shell 2. The fifth slide groove 25 can be used to limit the fifth slide block 26 and the fourth slide block 24, so that the fourth slide block 24 is plugged into the inside of the second limiting groove 21, thereby fixing the second plug-in block 20 in the inside of the second plug-in groove 22. The push rod 27 can be used to push the fifth slide block 26 and the fourth slide block 24 to slide into the inside of the fifth slide groove 25 and the fourth slide groove 23, and the fourth slide block 24 is pulled out from the inside of the second limiting groove 21 to release the limit on the second plug-in block 20, so as to facilitate the removal of the shell cover 19.

[0025] A plurality of first telescopic springs 28 are disposed inside the fifth slide slot 25, one end of the first telescopic spring 28 is fixedly connected to the inner wall of the fifth slide slot 25, and the other end of the first telescopic spring 28 is fixedly connected to one side of the fifth slider 26;

[0026] The shell 2 is fixedly connected with an installation box 29 inside, a controller 30 is fixedly installed inside the installation box 29, a first electric telescopic rod 31 is fixedly installed inside the controller 30, a fixed plate 32 is fixedly connected inside the installation box 29, a sliding rod 33 is slidably connected inside the fixed plate 32, a second telescopic spring 34 is arranged on the outside of the sliding rod 33, one end of the second telescopic spring 34 is fixedly connected to one side of the fixed plate 32, the other end of the second telescopic spring 34 is fixedly connected to the outside of the sliding rod 33, a first hook 35 is fixedly connected to one side of the sliding rod 33, a second hook 36 is fixedly connected to the inside of the installation box 29, a second electric telescopic rod 37 is fixedly installed inside the installation box 29, an insulating card block 38 is fixedly connected to the output end of the second electric telescopic rod 37, and a second electric telescopic rod 37 is fixedly connected to the output end of the second electric telescopic rod 37. The second hook 36, the insulating block 38, and the first hook 35 cooperate with each other, and the first electric telescopic rod 31 cooperates with the sliding rod 33. Through the cooperation of the controller 30, the first electric telescopic rod 31, the fixed plate 32, the sliding rod 33, the second telescopic spring 34, the first hook 35, the second hook 36, and the second electric telescopic rod 37, when the induced current of the current transformer exceeds the difference, the controller 30 can start the first electric telescopic rod 31 to extend, push the sliding rod 33 to move to make the second telescopic spring 34 contract, and then push the first hook 35 to separate from the second hook 36, and at the same time start the second electric telescopic rod 37 to extend, push the insulating block 38 to move between the first hook 35 and the second hook 36, so as to cut off the power and improve the protection of the transformer;

[0027] A heat-sensitive sensor 39 is provided inside the installation box 29, a control device 40 is provided outside the storage tank 3, a connecting pipe 41 is fixedly connected to the inside of the storage tank 3, the other end of the connecting pipe 41 extends to the inside of the shell 2, an electric valve is provided inside the storage tank 3, the control device 40 is electrically connected to the heat-sensitive sensor 39 and the electric valve, and through the mutual cooperation of the heat-sensitive sensor 39, the storage tank 3, the control device 40 and the connecting pipe 41, when a fire occurs inside the shell 2 and the temperature exceeds the preset value of the heat-sensitive sensor 39, the electric valve of the storage tank 3 can be activated through the heat-sensitive sensor 39, and the fire extinguishing agent stored in the storage tank 3 can be sprayed into the inside of the shell 2 through the connecting pipe 41, so as to extinguish the fire and reduce losses.

[0028] In summary, when the overload protection device for the distribution transformer of the distribution line is used, the staff can fix the mounting plate 1 on the fixed object by fixing bolts, and then insert the two first plug-in blocks 5 into the first plug-in slot 4, and then turn the knob to drive the second rotating shaft 17 and the worm 18 to rotate, and then drive the first rotating shaft 15 and the worm gear 16 to rotate, and then drive the bidirectional screw 12 to rotate, and then drive the two third sliders 13 to slide inside the third slide slot 11, and then drive the two second sliders 10 to slide correspondingly inside the second slide slot 9, and then drive the two first sliders 8 to slide inside the first slide slot 7, so as to The first plug-in block 5 is fixed inside the first plug-in slot 4, and by pushing the two push rods 27, the fifth slider 26 and the fourth slider 24 are driven to slide into the fifth slide slot 25 and the fourth slide slot 23, so that the first telescopic spring 28 is contracted, and the fourth slider 24 is pulled out from the second limiting slot 21, so as to facilitate the disassembly and assembly of the shell cover 19. When a fire occurs inside the shell 2 due to a short circuit or other reasons, and the high temperature generated exceeds the preset value of the heat-sensitive sensor 39, the electric valve is started by the control device 40 to spray the fire extinguishing agent in the storage tank 3 into the inside of the shell 2 through the connecting pipe 41, thereby extinguishing the fire inside the shell 2.

[0029] The above description is only a preferred specific implementation manner of the present invention, but 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 scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An overload protection device for a distribution transformer of a distribution line, comprising a mounting plate (1), a housing (2), and a storage tank (3), characterized in that: The shell (2) and the storage tank (3) are both fixedly connected with a first plug-in block (5) on one side, the first plug-in block (5) is provided with two corresponding first limit grooves (6) inside, the mounting plate (1) is provided with two corresponding first plug-in grooves (4), the mounting plate (1) is provided with two corresponding first slide grooves (7) inside and outside the first plug-in grooves (4), the first slide groove (7) is slidably connected with a first slider (8) inside, the first slider (8) is plugged into the inside of the first limit groove (6), the shell (2) is provided with a first slider (8) inside. The housing (2) is provided with two corresponding second plug-in slots (22), a second plug-in block (20) is plugged into the interior of the second plug-in slot (22), a fourth slide slot (23) is provided inside the housing (2) and located on one side of the second plug-in slot (22), a fourth slider (24) is slidably connected to the interior of the fourth slide slot (23), a second limiting slot (21) is provided inside the second plug-in block (20), the fourth slider (24) is plugged into the interior of the second limiting slot (21), and a shell cover (19) is fixedly connected between the two second plug-in blocks (20).

2. The overload protection device for distribution transformer of a distribution line according to claim 1, characterized in that: A second slide groove (9) is provided inside the mounting plate (1) and on one side of the first slide groove (7); a third slide groove (11) is provided inside the mounting plate (1) and on one side of the two groups of second slide grooves (9); a bidirectional screw rod (12) is rotatably connected inside the third slide groove (11); two corresponding third sliders (13) are slidably connected inside the third slide groove (11); the bidirectional screw rod (12) passes through the two third sliders (13) and is threadedly connected thereto; a second slider (10) is fixedly connected to one side of the third slider (13); the second slider (10) is slidably connected to the inside of the second slide groove (9); and the second slider (10) is fixedly connected to the first slider (8).

3. The overload protection device for distribution transformer of a distribution line according to claim 1, characterized in that: Two corresponding internal grooves (14) are provided inside the mounting plate (1), a first rotating shaft (15) is rotatably connected inside the internal groove (14), a worm wheel (16) is fixedly connected to the outside of the first rotating shaft (15) and located inside the internal groove (14), a second rotating shaft (17) is rotatably connected inside the internal groove (14), a worm (18) is fixedly connected to the outside of the second rotating shaft (17) and located inside the internal groove (14), the worm (18) and the worm wheel (16) are meshed with each other, one end of the first rotating shaft (15) extends to the inside of the third sliding groove (11) and is fixedly connected to the bidirectional screw (12), and one end of the second rotating shaft (17) is fixedly connected to a knob.

4. The overload protection device for distribution transformer of distribution line according to claim 1, characterized in that: A fifth slide groove (25) is provided inside the shell (2) and on one side of the fourth slide groove (23); a fifth slide groove (26) is fixedly connected to one side of the fourth slide groove (24); the fifth slide groove (26) is slidably connected to the inside of the fifth slide groove (25); a push rod (27) is fixedly connected to one side of the fifth slide groove (26); one end of the push rod (27) extends to the outside of the shell (2).

5. The overload protection device for distribution transformer of distribution line according to claim 4, characterized in that: A plurality of first telescopic springs (28) are arranged inside the fifth slide groove (25), one end of the first telescopic spring (28) is fixedly connected to the inner wall of the fifth slide groove (25), and the other end of the first telescopic spring (28) is fixedly connected to one side of the fifth sliding block (26).

6. The overload protection device for distribution transformer of a distribution line according to claim 1, characterized in that: The housing (2) is fixedly connected to an installation box (29), a controller (30) is fixedly installed inside the installation box (29), a first electric telescopic rod (31) is fixedly installed inside the controller (30), a fixed plate (32) is fixedly connected to the inside of the installation box (29), a sliding rod (33) is slidably connected to the inside of the fixed plate (32), a second telescopic spring (34) is arranged on the outside of the sliding rod (33), one end of the second telescopic spring (34) is fixedly connected to one side of the fixed plate (32), and the second telescopic spring (31) is fixedly installed inside the controller (30). 4) is fixedly connected to the outer side of the sliding rod (33); one side of the sliding rod (33) is fixedly connected to a first hook (35); the interior of the installation box (29) is fixedly connected to a second hook (36); the interior of the installation box (29) is fixedly installed with a second electric telescopic rod (37); the output end of the second electric telescopic rod (37) is fixedly connected to an insulating card block (38); the second hook (36), the insulating card block (38) and the first hook (35) cooperate with each other; the first electric telescopic rod (31) and the sliding rod (33) cooperate with each other.

7. The overload protection device for distribution transformer of distribution line according to claim 6, characterized in that: A heat sensitive device (39) is arranged inside the installation box (29), a control device (40) is arranged outside the storage tank (3), a connecting pipe (41) is fixedly connected inside the storage tank (3), the other end of the connecting pipe (41) extends to the inside of the shell (2), an electric valve is arranged inside the storage tank (3), and the control device (40) is electrically connected to the heat sensitive device (39) and the electric valve.

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