Zero-loss depth current limiting device
By introducing heat dissipation and buffer components into the zero-loss deep current limiting device, the problem of temperature rise caused by high temperature is solved, the device has a long service life and stable operation, and the safety of the power system is ensured.
Patent Information
- Application Number
- CN202520415654.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-11
AI Technical Summary
The zero-loss deep current limiting device experiences temperature rise in high-temperature environments, leading to a shortened service life and affecting the device's safety and reliability.
A zero-loss depth current limiting device was designed, which includes a heat dissipation mechanism and a buffer component. The device dissipates heat through motor-driven fan blades and uses a water pump to circulate condensate for cooling. At the same time, a combination of hydraulic pipes and springs is used to reduce vibration when the fan blades rotate, thereby improving the stability of the device.
It effectively reduces device temperature, extends service life, improves device safety and stability, and reduces wear caused by shaking.
Smart Images
Figure CN223885523U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the electric power system technical field, especially, relate to a zero loss depth current limiting device. BACKGROUND
[0002] In today's society, the scale of the power system expands with the economic development and the growth of electricity demand, the probability of short-circuit fault increases, the short-circuit current can cause serious damage to electrical equipment, and threatens the safe and stable operation of the power system, at the same time, the electricity load of each enterprise rises, which leads to the problems of the short-circuit current close to or even reaching the limit of electrical equipment, insufficient short-circuit resistance of equipment and the like.
[0003] Among them, when the zero loss depth current limiting device is in use, the temperature of the device may rise due to high external temperature, which shortens the service life of the device and reduces the service life of the device, in view of the above problems, the following solutions are proposed. UTILITY MODEL CONTENTS
[0004] The utility model discloses a zero loss depth current limiting device, which is provided with a heat dissipation mechanism, which solves the problem that the temperature of the device may rise due to high external temperature when the zero loss depth current limiting device is in use, which shortens the service life of the device and reduces the service life of the device.
[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:
[0006] The utility model discloses a zero loss depth current limiting device, which comprises a rectangular box, a heat dissipation mechanism and a plurality of buffer components are arranged in the rectangular box, and the plurality of buffer components are arranged in a circumferential array.
[0007] The heat dissipation mechanism comprises a mounting plate fixedly connected to the inner wall of the rectangular box, a support is arranged on the inner wall of the mounting plate, a motor box is fixedly connected to the inner wall of the support, a motor is fixedly connected to the inner wall of the motor box, a rotating shaft is fixedly connected to the output shaft of the motor, the rotating shaft is rotatably connected to the motor box, and a fan blade is fixedly connected to the outer wall of the rotating shaft.
[0008] Further, the left side outer wall and the right side outer wall of the rectangular box are provided with ventilation nets, a depth current limiter is fixedly connected to the rectangular box, a water pump is fixedly connected to the top of the mounting plate, a pipeline is sleeved on the depth current limiter, the water inlet of the pipeline penetrates through the top of the rectangular box and is in communication with the right side of the water pump, and the water outlet of the pipeline penetrates through the top of the rectangular box and is in communication with the left side of the water pump.
[0009] Further, the buffer assembly comprises a cylindrical cavity fixedly connected to the inner wall of the mounting plate, a hydraulic pipe fixedly connected to the right inner wall of the cylindrical cavity, and a piston rod fixedly connected to the outer wall of the bracket, wherein the piston rod is slidably connected to the cylindrical cavity and the hydraulic pipe.
[0010] Further, the hydraulic pipe is provided with a spring, the right side of the spring is fixedly connected to the cylindrical cavity, the left side of the spring is fixedly connected to the piston rod, the right side of the hydraulic pipe is provided with a liquid outlet, and the right side of the hydraulic pipe is provided with a liquid inlet.
[0011] The utility model has the advantages of the following beneficial effects:
[0012] 1. The heat dissipation mechanism is provided, the motor is started, the motor drives the rotating shaft to rotate through the output shaft, thereby driving the fan blades on the rotating shaft to rotate, thereby sucking external air from the ventilation net on the left side of the rectangular box and discharging the air through the ventilation net on the right side of the rectangular box, improving the circulation of air, then starting the water pump, the water pump sucks the condensate in the pipeline into the water pump through the connecting port of the right side pipeline, and then discharges the condensate through the left connecting port of the water pump and the pipeline, thereby circulating the condensate in the pipeline, reducing the temperature of the depth flow restrictor, reducing the problem that the high external temperature reduces the use time of the device, reducing the temperature of the device, ensuring the safe use of the device, and prolonging the use time of the device.
[0013] 2. The buffer assembly is provided, when the fan blades rotate, the bracket may shake, the bracket will extrude the piston rod, the right side of the piston rod will extrude the liquid in the hydraulic pipe and the spring, the spring generates a rebound force, the liquid in the hydraulic pipe flows into the gap between the cylindrical cavity and the hydraulic pipe through the liquid outlet and then flows into the hydraulic pipe through the liquid inlet, under the action of the spring rebound force, when the piston rod resets, the liquid in the hydraulic pipe flows into the gap between the cylindrical cavity and the hydraulic pipe through the liquid inlet and then flows into the hydraulic pipe through the liquid outlet, through the above operation process, the water tension will slow down the extrusion of the piston rod, the spring will play a buffering and resetting role, the vibration generated when the fan blades rotate is reduced, the stability of the device during use is improved, the wear of the device caused by shaking is reduced, and the operation of the device is protected.
[0014] Of course, implementing any product of the utility model does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0016] Figure 1 It is the whole cross section structure schematic view of the utility model;
[0017] Figure 2 It is the cross section structure schematic view of the heat radiation mechanism of the utility model;
[0018] Figure 3 It is the cross section structure schematic view of the utility model's Figure 2 Enlarged structure schematic view of A in the middle;
[0019] Figure 4 It is the cross section structure schematic view of the utility model's buffer assembly;
[0020] Figure 5 It is the cross section structure schematic view of the utility model's Figure 4 Enlarged structure schematic view of B in the middle.
[0021] In the drawing, the component list represented by each sign is as follows:
[0022] 1, rectangular box;11, ventilation net;12, depth flow restrictor;2, heat radiation mechanism;21, mounting plate;22, support;23, motor box;24, motor;25, rotating shaft;26, fan blade;27, water pump;28, pipeline;3, buffer assembly;31, cylindrical cavity;32, hydraulic pipe;33, piston rod;34, spring;35, liquid outlet;36, liquid inlet. Specific implementation
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0024] Please refer to Figures 1-5As shown, the utility model is a kind of zero-loss depth current limiter, including rectangular box 1, rectangular box 1 is provided with heat dissipation mechanism 2 and several buffer components 3, several buffer components 3 are arranged in circumferential array, heat dissipation mechanism 2 includes the mounting plate 21 of fixed connection in rectangular box 1 inner wall, the inner wall of mounting plate 21 is provided with support 22, the inner wall of support 22 is fixedly connected with motor box 23, the inner wall of motor box 23 is fixedly connected with motor 24, the output shaft of motor 24 is fixedly connected with rotating shaft 25, rotating shaft 25 is rotatably connected with motor box 23, the outer wall of rotating shaft 25 is fixedly connected with fan blade 26, the left side outer wall and right side outer wall of rectangular box 1 are all provided with ventilation net 11, rectangular box 1 is fixedly connected with depth current limiter 12, the top of mounting plate 21 is fixedly connected with water pump 27, depth current limiter 12 is sleeved with pipeline 28, the water inlet of pipeline 28 penetrates rectangular box 1 top and is communicated with the right side of water pump 27, the water outlet of pipeline 28 penetrates the top of rectangular box 1 and is communicated with the left side of water pump 27, by setting heat dissipation mechanism 2, reduce the problem that external temperature is too high, reduce the use time of device, reduce the temperature of device, guarantee the safe use of device, improve the use time of device, buffer component 3 includes the cylindrical cavity 31 of fixed connection in the inner wall of mounting plate 21, the right inner wall of cylindrical cavity 31 is fixedly connected with hydraulic pipe 32, the outer wall of support 22 is fixedly connected with piston rod 33, piston rod 33 is slidably connected with cylindrical cavity 31, piston rod 33 is slidably connected with hydraulic pipe 32, spring 34 is arranged in hydraulic pipe 32, the right side of spring 34 is fixedly connected with cylindrical cavity 31, the left side of spring 34 is fixedly connected with piston rod 33, the right side of hydraulic pipe 32 is provided with liquid outlet 35, the right side of hydraulic pipe 32 is provided with liquid inlet 36, by setting buffer component 3, the tension of water will slow down the extrusion of piston rod, spring will play the role of buffering and resetting, reduce the vibration generated when fan blade rotates, improve the stability of device when in use, reduce the abrasion of device by shaking, protect the operation of device.
[0025] One specific application of the embodiment is: in use, install the device at the desired location, open the depth current limiter 12 device, the depth current limiter 12 in the device is ZLB-10KV-5000A, and its working principle is: normal operation: the fast converter is closed, the reactor is short-circuited, the circuit has low impedance, the current flows through the converter smoothly, the reactor does not work, and zero-loss operation is realized; fault state: when a short-circuit fault occurs, the current transformer detects that the short-circuit current exceeds the set amplitude, the fast recognizer makes a judgment, the fast converter is disconnected within 7-15 ms before the first zero point of the short-circuit current, and the reactor is connected to the circuit to limit the amplitude of the short-circuit current; after fault removal: after the fault branch is removed or automatic reclosing is successful, the measurement and control unit detects the bus voltage and other parameters, and sends a closing command to the fast converter when the conditions are met, the reactor is short-circuited again, the system resumes zero-loss operation, the motor 24 is started, the motor 24 drives the rotating shaft 25 through the output shaft to rotate, thereby driving the fan blades 26 on the rotating shaft 25 to rotate, thereby sucking external air from the ventilation net 11 on the left side of the rectangular box 1 and discharging the air through the ventilation net 11 on the right side of the rectangular box 1, improving the circulation of air, and then starting the water pump 27, which sucks the condensate in the pipeline 28 into the water pump 27 through the connecting port of the right side of the pipeline 28, and then discharges the condensate through the left connecting port of the water pump 27 and the pipeline 28, thereby circulating the condensate in the pipeline 28 to reduce the temperature of the depth current limiter 12. Through the above operation mode, the problem of reducing the use time of the device caused by the high temperature of the external environment is solved, the temperature of the device is reduced, the safe use of the device is ensured, the use time of the device is improved, and the fan blades 26 may drive the bracket 22 to sway when rotating. When the bracket 22 sways, the bracket 22 will extrude the piston rod 33, the right side of the piston rod 33 will extrude the liquid in the hydraulic pipe 32 and the spring 34, the spring 34 will generate a rebound force, the liquid in the hydraulic pipe 32 will flow into the gap between the cylindrical cavity 31 and the hydraulic pipe 32 through the liquid outlet 35 and flow into the hydraulic pipe 32 through the liquid inlet 36, and under the action of the rebound force of the spring 34, the piston rod 33 will reset, the liquid in the hydraulic pipe 32 will flow into the gap between the cylindrical cavity 31 and the hydraulic pipe 32 through the liquid inlet 36, and then flow into the hydraulic pipe 32 through the liquid outlet 35. Through the above operation process, the water tension will slow down the extrusion of the piston rod 33, and the spring will play a buffering and resetting role, reducing the vibration generated when the fan blades 26 rotate, improving the stability of the device in use, reducing the wear of the device caused by the sway, and protecting the operation of the device.
[0026] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0027] The preferred embodiments of the utility model disclosed above are only used for helping to set forth the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific implementation manners described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the whole scope and equivalents thereof.
Claims
1. A zero-loss deep flow restriction device characterized by: Including rectangular box (1), the rectangular box (1) is provided with heat dissipation mechanism (2) and several buffer assemblies (3), several buffer assemblies (3) are arranged in circumferential array; The heat dissipation mechanism (2) includes the mounting plate (21) fixedly connected to the inner wall of the rectangular box (1), the inner wall of the mounting plate (21) is provided with a support (22), the inner wall of the support (22) is fixedly connected with a motor box (23), the inner wall of the motor box (23) is fixedly connected with a motor (24), the output shaft of the motor (24) is fixedly connected with a rotating shaft (25), the rotating shaft (25) is rotatably connected with the motor box (23), the outer wall of the rotating shaft (25) is fixedly connected with a fan blade (26).
2. A zero-loss deep current limiting device according to claim 1, wherein, The left outer wall and the right outer wall of the rectangular box (1) are provided with ventilation nets (11), the rectangular box (1) is fixedly connected with a depth flow limiter (12), the top of the mounting plate (21) is fixedly connected with a water pump (27).
3. A zero-loss deep current limiting device according to claim 2, wherein, The depth flow limiter (12) is provided with a pipeline (28), the water inlet of the pipeline (28) penetrates the top of the rectangular box (1) and is communicated with the right side of the water pump (27), and the water outlet of the pipeline (28) penetrates the top of the rectangular box (1) and is communicated with the left side of the water pump (27).
4. A zero-loss deep current limiting device according to claim 3, wherein, The buffer assembly (3) includes a cylindrical cavity (31) fixedly connected to the inner wall of the mounting plate (21), and the right inner wall of the cylindrical cavity (31) is fixedly connected with a hydraulic pipe (32).
5. A zero-loss deep current limiting device according to claim 4, wherein, The outer wall of the support (22) is fixedly connected with a piston rod (33), the piston rod (33) is slidably connected with the cylindrical cavity (31), and the piston rod (33) is slidably connected with the hydraulic pipe (32).
6. A zero-loss deep current limiting device according to claim 5, wherein, The hydraulic pipe (32) is provided with a spring (34), the right side of the spring (34) is fixedly connected with the cylindrical cavity (31), and the left side of the spring (34) is fixedly connected with the piston rod (33).
7. A zero-loss deep current limiting device according to claim 6, wherein, The right side of the hydraulic pipe (32) is provided with a liquid outlet (35), and the right side of the hydraulic pipe (32) is provided with a liquid inlet (36).