Bus differential protection device
By introducing a heat dissipation mechanism and an adjustment mechanism into the bus differential protection device, the problem of high-temperature aging caused by poor heat dissipation has been solved, achieving uniform heat dissipation and convenient operation, and improving the stability and convenience of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU QIANXI ZHONGSHUI POWER GENERATION CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-23
AI Technical Summary
Existing bus differential protection devices lack effective heat dissipation channels, leading to accelerated aging due to high temperatures, especially in summer or in power distribution rooms without air conditioning. Furthermore, slotted ventilation is prone to heat dissipation failure due to dust screen blockage.
The device employs a heat dissipation and adjustment mechanism, including a fan, condenser, drive components, and adjustment mechanism. The reciprocating motion of the fan and the condenser assist in cooling, while the adjustment mechanism enables multi-angle adjustment, ensuring uniform heat dissipation and convenient operation within the device.
It achieves uniform heat dissipation of the bus differential protection device, prevents aging of electronic components, improves the stability and ease of use of the device, and enhances the convenience of operation and maintenance.
Smart Images
Figure CN224401146U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power system relay protection technology, and in particular to a bus differential protection device. Background Technology
[0002] Bus differential protection device is an automated protection device based on Kirchhoff's current law. It determines whether a bus fault has occurred by real-time acquisition and comparison of the current magnitude and phase of all connected branches of the bus. When an internal fault is detected in the bus, the device quickly issues a trip command to disconnect all circuit breakers connected to the faulty bus, isolate the fault area, and prevent the accident from escalating.
[0003] Existing bus differential protection devices can quickly and reliably detect and disconnect bus faults, ensuring the safe and stable operation of the power system. However, the internal components of the device are densely arranged and lack effective heat dissipation channels. Long-term operation will cause the electronic components to age faster due to high temperatures, which is especially serious in summer or in power distribution rooms without air conditioning. The existing technology is to open louvered air inlets on both sides or bottom of the device and set air outlets on the top to form a natural air channel using the principle of thermal convection. However, slotted ventilation relies on passive air intake and is prone to heat dissipation failure due to dust screen blockage. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a bus differential protection device, which aims to improve the problem that the slotted ventilation in the prior art relies on passive air intake and is prone to heat dissipation failure due to dust screen blockage.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a body, wherein an installation plate is provided on the rear side of the body, a heat dissipation mechanism is provided inside the body for uniform heat dissipation, an adjustment mechanism is provided at the bottom of the body for adjusting the angle of the body; the heat dissipation mechanism includes an extension block, which is fixedly connected to the bottom wall of the body, and a square groove is provided on both the left and right sides of the top wall of the extension block, a bottom plate is provided inside the square groove, a fan is installed on the top wall of the bottom plate, and condensers are installed on adjacent sides of the outer walls of the two fans, and a drive assembly is provided at the bottom of the body.
[0006] As a further description of the above technical solution:
[0007] The drive assembly includes a small dual-head motor, which is fixedly connected to the middle of the inner bottom wall of the extension block. Each output end of the extension block is fixedly connected to a connecting shaft, and the end of the connecting shaft is fixedly connected to a full gear. A rack is fixedly connected to the bottom wall of the base plate, and the rack meshes with the full gear.
[0008] As a further description of the above technical solution:
[0009] The adjustment mechanism includes an L-shaped plate, which is disposed on the front side of the outer wall of the mounting plate. Bolts are threadedly connected to the four corners of the front side of the outer wall of the L-shaped plate. A rotating shaft is rotatably connected to the front side of the top wall of the L-shaped plate. A half gear is fixedly connected to the top of the rotating shaft. A connecting rod is fixedly connected to the bottom of the half gear. A rotating shaft is fixedly connected to the front side of the top wall of the connecting rod. A half gear is fixedly connected to the top of the rotating shaft. A connecting block is fixedly connected to the middle of the outer wall of the rotating shaft. The top wall of the connecting block is fixedly connected to the middle of the bottom wall of the extension block.
[0010] As a further description of the above technical solution:
[0011] The two fans are located on the left and right sides inside the body, and the base plate is slidably connected to the square groove.
[0012] As a further description of the above technical solution:
[0013] The L-shaped plate is connected to the mounting plate by bolts and threads, and the second half gear is meshed with the first half gear.
[0014] As a further description of the above technical solution:
[0015] The outer wall of the machine body is provided with square grooves on both the left and right sides, and dustproof nets are installed on the inner side of the square grooves.
[0016] As a further description of the above technical solution:
[0017] The outer wall of the machine body is provided with square grooves on both the left and right sides, and dustproof nets are installed on the inner side of the square grooves.
[0018] As a further description of the above technical solution:
[0019] A display screen is installed on the left side of the outer wall of the machine body, and multiple buttons are installed at equal intervals on the front side of the outer wall of the machine body.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, a small double-headed motor is started, which drives the full gear to rotate through the connecting shaft, thereby causing the fan on the base plate to move left and right inside the machine body, and the condenser assists in cooling, so as to achieve uniform heat dissipation inside the machine body and ensure stable operation of the device.
[0022] 2. In this utility model, rotating half gear one drives rotating shaft one to rotate, and half gear two meshes with it. The rotation is transmitted to half gear two through the connecting rod, which in turn causes rotating shaft two to rotate. The movement of rotating shaft two causes the machine body to change angle through the extension block, realizing flexible adjustment of multiple angles, which is convenient for maintenance personnel to observe and operate, and improves the convenience of use. Attached Figure Description
[0023] Figure 1 This is a front view of a busbar differential protection device proposed in this utility model;
[0024] Figure 2 This is a perspective view of a busbar differential protection device proposed in this utility model;
[0025] Figure 3 This is a partial structural schematic diagram of a busbar differential protection device proposed in this utility model;
[0026] Figure 4 This is a partial structural exploded view of a busbar differential protection device proposed in this utility model;
[0027] Figure 5 This is a partial exploded view of the structure of a busbar differential protection device proposed in this utility model.
[0028] Legend:
[0029] 1. Body; 2. Mounting plate; 3. Heat dissipation mechanism; 301. Extension block; 302. Square groove one; 303. Base plate; 304. Fan; 305. Condenser; 306. Drive assembly; 3061. Small double-head motor; 3062. Connecting shaft; 3063. Full gear; 3064. Rack; 4. Adjustment mechanism; 401. L-shaped plate; 402. Bolt; 403. Rotating shaft one; 404. Half gear one; 405. Connecting rod; 406. Rotating shaft two; 407. Half gear two; 408. Connecting block; 5. Slide groove; 6. Slider; 7. Square groove two; 8. Dustproof net; 9. Display screen; 10. Button. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figure 2 , Figure 3 and Figure 4This utility model provides an embodiment of a bus differential protection device, comprising a body 1, an mounting plate 2 on the rear side of the body 1, a heat dissipation mechanism 3 inside the body 1 for uniform heat dissipation, and an adjustment mechanism 4 at the bottom of the body 1 for adjusting the angle of the body 1. The heat dissipation mechanism 3 includes an extension block 301 fixedly connected to the bottom wall of the body 1. Square grooves 302 are formed on both the left and right sides of the top wall of the extension block 301. A base plate 303 is provided inside the square grooves 302. A fan 304 is installed on the top wall of the base plate 303. Condensers 305 are installed on adjacent sides of the outer walls of the two fans 304, with the condensers 305 outside the fans 304 assisting in cooling. The bottom of the body 1... A drive assembly 306 is provided, which includes a small dual-head motor 3061. The small dual-head motor 3061 is fixedly connected to the middle of the inner bottom wall of the extension block 301. The output ends of the extension block 301 are all fixedly connected to a connecting shaft 3062. The small dual-head motor 3061 drives the connecting shaft 3062 to rotate. The end of the connecting shaft 3062 is fixedly connected to a full gear 3063. The connecting shaft 3062 drives the full gear 3063 to rotate. A rack 3064 is fixedly connected to the bottom wall of the base plate 303. The rack 3064 meshes with the full gear 3063. The full gear 3063 drives the rack 3064 at the bottom of the base plate 303 to slide in the square groove 302. Two fans 304 are arranged on the left and right sides inside the body 1. The base plate 303 is slidably connected to the square groove 302.
[0032] Specifically, the heat dissipation mechanism 3 is used to uniformly dissipate heat inside the body 1, the adjustment mechanism 4 is used to adjust the angle of the body 1, and the small dual-head motor 3061 is started. The small dual-head motor 3061 drives the connecting shaft 3062 to rotate, which in turn causes the full gear 3063 to rotate. The operation of the full gear 3063 drives the rack 3064 at the bottom of the base plate 303 to slide in the square groove 302. This process causes the fan 304 mounted on the base plate 303 to reciprocate inside the body 1. At the same time, the condenser 305 on the outside of the fan 304 provides auxiliary cooling to achieve dynamic and uniform heat dissipation in various areas inside the body 1, ensuring the stable operation of the equipment.
[0033] Reference Figure 1 and Figure 5The adjusting mechanism 4 includes an L-shaped plate 401, which is disposed on the front side of the outer wall of the mounting plate 2. Bolts 402 are threadedly connected to the four corners of the front side of the outer wall of the L-shaped plate 401. A rotating shaft 403 is rotatably connected to the front top wall of the L-shaped plate 401. A half-gear 404 is fixedly connected to the top of the rotating shaft 403. A connecting rod 405 is fixedly connected to the bottom of the half-gear 404. A rotating shaft 406 is fixedly connected to the front top wall of the connecting rod 405. A half-gear 407 is fixedly connected to the top of the rotating shaft 406. The half-gear 404 drives the rotating shaft 403 to rotate. Half gear 407 meshes with half gear 404. The rotational motion of half gear 404 is transmitted to half gear 407 via connecting rod 405. A connecting block 408 is fixedly connected to the middle of the outer wall of shaft 406. The top wall of connecting block 408 is fixedly connected to the middle of the bottom wall of extension block 301. L-shaped plate 401 is threadedly connected to mounting plate 2 via bolt 402. Half gear 407 meshes with half gear 404. Half gear 407 drives shaft 406 to rotate. Shaft 406 drives extension block 301 on connecting block 408 to move. Extension block 301 drives body 1 to change angle.
[0034] Specifically, during the manual rotation of half gear 404, the half gear drives shaft 403 to rotate. Since half gear 407 is meshed with half gear 404, the rotational motion of half gear 404 is transmitted to half gear 407 through connecting rod 405, which in turn causes shaft 406 to rotate. The rotation of shaft 406 causes extension block 301 on connecting block 408 to move, and the movement of extension block 301 causes the angle of body 1 to change, realizing flexible adjustment of body 1 at multiple angles. This greatly facilitates the observation of the display panel and related operations by maintenance personnel, thereby improving the ease of use of the equipment.
[0035] Reference Figure 1 , Figure 3 and Figure 4 The machine body 1 has a sliding groove 5 inside, which is opened on the left and right sides of the inner wall of the square groove 302. The inner wall of the sliding groove 5 is slidably connected to the slider 6. The two sliders 6 are fixedly connected to the left and right sides of the outer wall of the base plate 303. The sliding groove 5 and the slider 6 slide together to provide guidance and support for the horizontal reciprocating movement of the base plate 303. The left and right sides of the outer wall of the machine body 1 are provided with square grooves 7. Square grooves 7 are used to install dustproof nets 8. The inner side of square grooves 7 is equipped with dustproof nets 8. The dustproof nets 8 are used to filter dust and impurities in the outside air. The left end of the front side of the outer wall of the machine body 1 is equipped with a display screen 9. The display screen 9 is used to display the operating parameters of the bus differential protection device in real time. Multiple buttons 10 are equidistantly installed on the front side of the outer wall of the machine body 1. The buttons 10 are used to input operating commands.
[0036] Specifically, the slide groove 5 and the slider 6 slide together to provide guidance and support for the horizontal reciprocating movement of the base plate 303. The square groove 7 is used to install the dustproof net 8, which is used to filter dust and impurities in the outside air. The display screen 9 is used to display the operating parameters of the bus differential protection device in real time. The button 10 is used to input operation commands.
[0037] Working principle: Start the small double-head motor 3061, which drives the connecting shaft 3062 to rotate. The connecting shaft 3062 drives the full gear 3063 to rotate. The full gear 3063 drives the rack 3064 at the bottom of the base plate 303 to slide in the square groove 302, so that the fan 304 installed on the base plate 303 moves back and forth inside the body 1. At the same time, the condenser 305 on the outside of the fan 304 assists in cooling, thereby achieving dynamic and uniform heat dissipation in various areas inside the body 1 and ensuring stable operation of the device.
[0038] When half gear 1 404 is manually rotated, half gear 1 404 drives shaft 1 403 to rotate. Since half gear 2 407 meshes with half gear 1 404, the rotational motion of half gear 1 404 is transmitted to half gear 2 407 through connecting rod 405. Half gear 2 407 drives shaft 2 406 to rotate. Shaft 2 406 drives extension block 301 on connecting block 408 to move. Extension block 301 drives body 1 to change angle, thereby realizing flexible adjustment of body 1 at multiple angles, making it convenient for maintenance personnel to observe the display panel or perform operations, and improving ease of use.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A bus differential protection device, comprising a body (1), characterized in that: An installation plate (2) is provided on the rear side of the outer side of the body (1), and a heat dissipation mechanism (3) is provided inside the body (1). The heat dissipation mechanism (3) is used to dissipate heat evenly inside the body (1). An adjustment mechanism (4) is provided at the bottom of the body (1). The adjustment mechanism (4) is used to adjust the angle of the body (1). The heat dissipation mechanism (3) includes an extension block (301), which is fixedly connected to the bottom wall of the body (1). The top wall of the extension block (301) has square grooves (302) on both the left and right sides. A base plate (303) is provided inside the square groove (302). A fan (304) is installed on the top wall of the base plate (303). A condenser (305) is installed on the adjacent side of the outer wall of the two fans (304). A drive assembly (306) is provided at the bottom of the body (1).
2. The bus differential protection device according to claim 1, characterized in that: The drive assembly (306) includes a small dual-head motor (3061), which is fixedly connected to the middle of the inner bottom wall of the extension block (301). The output ends of the extension block (301) are all fixedly connected to a connecting shaft (3062). The end of the connecting shaft (3062) is fixedly connected to a full gear (3063). The bottom wall of the base plate (303) is fixedly connected to a rack (3064), which meshes with the full gear (3063).
3. The busbar differential protection device according to claim 1, characterized in that: The adjustment mechanism (4) includes an L-shaped plate (401), which is disposed on the front side of the outer wall of the mounting plate (2). Bolts (402) are threadedly connected to the four corners of the front side of the outer wall of the L-shaped plate (401). A rotating shaft (403) is rotatably connected to the front side of the top wall of the L-shaped plate (401). A half gear (404) is fixedly connected to the top of the rotating shaft (403). A connecting rod (405) is fixedly connected to the bottom of the half gear (404). A rotating shaft (406) is fixedly connected to the front side of the top wall of the connecting rod (405). A half gear (407) is fixedly connected to the top of the rotating shaft (406). A connecting block (408) is fixedly connected to the middle of the outer wall of the rotating shaft (406). The top wall of the connecting block (408) is fixedly connected to the middle of the bottom wall of the extension block (301).
4. A busbar differential protection device according to claim 1, characterized in that: The two fans (304) are located on the left and right sides inside the body (1), and the base plate (303) is slidably connected to the square groove (302).
5. A busbar differential protection device according to claim 3, characterized in that: The L-shaped plate (401) is threadedly connected to the mounting plate (2) by bolts (402), and the second half gear (407) is meshed with the first half gear (404).
6. A busbar differential protection device according to claim 1, characterized in that: The body (1) is provided with a sliding groove (5), which is opened on the left and right sides of the inner wall of the square groove (302). The inner wall of the sliding groove (5) is slidably connected to a slider (6), and the two sliders (6) are fixedly connected to the left and right sides of the outer wall of the base plate (303).
7. A busbar differential protection device according to claim 1, characterized in that: The outer wall of the body (1) is provided with square grooves (7) on both the left and right sides, and a dustproof net (8) is installed on the inner side of the square grooves (7).
8. A busbar differential protection device according to claim 1, characterized in that: A display screen (9) is installed on the left side of the outer wall of the body (1), and multiple buttons (10) are installed at equal intervals on the front side of the outer wall of the body (1).