Dynamic compensation electric energy quality monitoring device

Abstract

The utility model discloses a dynamic compensation electric energy quality monitoring device, which belongs to the technical field of electric energy quality equipment and comprises an equipment main body and a shell, the equipment main body is assembled in the shell, a rear cover is fixedly mounted at the rear end of the shell, a temperature control structure is assembled at the rear end of the equipment main body, and a ventilation structure is assembled on the rear cover. According to the utility model, bimetal spiral sheets are designed, temperature change is converted into physical displacement, opening and closing of a heat dissipation air channel are passively and automatically controlled, energy consumption of a system is obviously reduced, heat dissipation according to needs is realized, the heat dissipation efficiency is improved, and the service life of the heat dissipation air channel is prolonged. The pure mechanical working mode ensures that the heat dissipation function can still operate independently and reliably even under the extreme condition that the main control circuit breaks down, so that higher-level overheating protection is provided for the equipment main body, and the environmental adaptability and the operation reliability of the whole device are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of power quality equipment, and specifically provides a dynamic compensation power quality monitoring device. Background Technology

[0002] Fixed power quality monitoring devices need to be installed in power distribution rooms, substations, and other on-site locations for continuous online monitoring. These devices contain power processing units and precision measurement circuits, generating continuous heat during operation. Effective heat dissipation design is crucial to ensure long-term reliable operation and measurement accuracy. Currently, common heat dissipation solutions often employ active temperature control systems consisting of temperature sensors, controllers, and electric actuators (such as fans and motorized louvers). However, in complex electromagnetic environments or high-temperature conditions, this electronic control system itself is prone to failure; failure can paralyze the heat dissipation function, potentially leading to overheating and damage to the equipment. Furthermore, fixed devices often face a trade-off between ventilation and sealing: increasing ventilation openings improves heat dissipation but also allows dust intrusion, affecting the insulation and lifespan of internal components; while strengthening sealing may inhibit heat dissipation. Simultaneously, external connection cables may loosen due to accidental pulling or vibration during long-term operation, affecting the continuity and accuracy of signal monitoring. Therefore, there is an urgent need for a fixed power quality monitoring device that offers reliable heat dissipation, adapts to temperature changes, and provides secure cables and interface protection. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a dynamic compensation power quality monitoring device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a dynamic compensation power quality monitoring device, comprising a main body and a housing, wherein the main body is assembled inside the housing, a rear cover is fixedly installed at the rear end of the housing, a temperature control structure is assembled at the rear end of the main body, a ventilation structure is assembled on the rear cover, and the temperature control structure adjusts the opening and closing of the ventilation structure, and a fan assembly is assembled on the rear side of the lower surface of the housing.

[0005] The temperature control structure includes a protective cover and a bimetallic spiral blade. Both the protective cover and the bimetallic spiral blade are fixedly installed on the rear wall of the main body of the equipment, and the bimetallic spiral blade is located inside the protective cover. The bimetallic spiral blade is composed of an active metal plate and a passive metal plate spliced ​​together. Both the active and passive metal plates are spiral-shaped, and the passive metal plate is stacked and assembled axially on the rear side of the active metal plate. A connecting plate is integrally formed at the rear end of the passive metal plate. A moving rod is fixedly installed at the inner end of the connecting plate, and a push rod is fixedly installed at the rear end of the moving rod.

[0006] Furthermore, slide rails are fixedly installed on both the inner and outer surfaces of the housing, and slide rods are fixedly installed on both the upper and lower surfaces of the main body of the equipment. The slide rods are movably mounted on the slide rails, and through holes are uniformly opened on the side surface of the slide rails.

[0007] Furthermore, a heat-conducting plate parallel to the slide rail is fixedly installed on the lower surface of the main body of the device, and heat dissipation fins are uniformly fixedly installed on the lower surface of the heat-conducting plate.

[0008] Furthermore, a guide cover is fixedly installed on the inner wall of the rear cover, and the opening of the guide cover faces upward. A filter screen is fixedly installed at the opening of the guide cover, and a flow guide plate is integrally formed on the outer wall of the opening of the guide cover, and the flow guide plate is attached to the rear surface of the main body of the equipment.

[0009] Furthermore, the ventilation structure includes louver blades and a transmission rod. The surface of the rear cover has a rectangular hole. Multiple louver blades are uniformly assembled in the rectangular hole along the vertical direction. A torsion spring is assembled at the connection between the louver blades and the rectangular hole. A groove is formed on the outer side of the lower end of each louver blade. A protrusion is uniformly integrally formed on the surface of the transmission rod, and the protrusion is hinged and assembled in the groove.

[0010] Furthermore, a circular hole is provided on the lower side of the rear surface of the rear cover, and a cable fixing structure is assembled in the circular hole. The cable fixing structure includes a cylindrical body and a clamping block. An mounting plate is fixedly installed on the outer wall of the cylindrical body. The mounting plate is fixedly installed on the rear surface of the rear cover by bolts and nuts, and the cylindrical body is assembled in the circular hole. An annular groove is provided on the inner wall of the cylindrical body, and a clamping block is movably assembled in the annular groove. Multiple clamping blocks are combined to form a cylindrical structure, and the cable is clamped in the cylindrical structure.

[0011] Furthermore, the outer arc surface of the clamping block is provided with a square groove, one end of the spring is fixedly installed on the inner wall of the annular groove, and the other end of the spring is fixedly installed in the square groove.

[0012] Furthermore, a slot is provided on one rectangular sidewall of the clamping block, and a locking block that matches the slot is integrally formed on the other rectangular sidewall of the clamping block. Friction texture is provided on the inner surface of the clamping block.

[0013] The beneficial effects of using this utility model are:

[0014] This invention features a bimetallic spiral blade that converts temperature changes into physical displacement, enabling passive and automatic control of the opening and closing of the heat dissipation duct. This significantly reduces system energy consumption and achieves on-demand heat dissipation. Its purely mechanical operation ensures that even in extreme cases where the main control circuit fails, the heat dissipation function can still operate independently and reliably, thus providing a higher level of overheat protection for the main body of the equipment and greatly improving the environmental adaptability and operational reliability of the entire device.

[0015] This invention designs a cable fixing structure that utilizes multiple clamping blocks that can move radially under spring preload. This allows the structure to adapt to and hold cables of different diameters tightly. Sufficient static friction is provided by the friction texture on the inner side of the clamping blocks. The interlocking design of the slots and blocks between adjacent clamping blocks ensures that all components fit tightly together while clamping the cable, thus forming a good seal at the cable entry point and preventing dust and moisture from entering through gaps. This enhances the reliability of external connections and avoids data monitoring interruptions caused by loose cables. Attached Figure Description

[0016] Figure 1 This is one of the three-dimensional schematic diagrams of this utility model.

[0017] Figure 2 This is the second three-dimensional schematic diagram of the present invention.

[0018] Figure 3 This is a right sectional view of the present invention.

[0019] Figure 4 This is a partial sectional view of the transmission rod of this utility model.

[0020] Figure 5 This is a three-dimensional schematic diagram of the bimetallic spiral blade of this utility model.

[0021] Figure 6 This utility model Figure 3 A magnified view of part a in the middle.

[0022] Figure 7 This is a three-dimensional schematic diagram of the cable fixing structure of this utility model.

[0023] Figure 8 This is a three-dimensional schematic diagram of the clamping block of this utility model.

[0024] The reference numerals in the attached drawings include: 1. Equipment body; 11. Slide rod; 12. Heat conduction plate; 13. Heat dissipation fins; 2. Shell; 21. Slide rail; 3. Rear cover; 31. Guide cover; 32. Filter screen; 33. Flow guide plate; 4. Temperature control structure; 41. Protective cover; 42. Bimetallic spiral blade; 43. Connecting plate; 44. Moving rod; 45. Push rod; 5. Ventilation structure; 51. Louver blade; 52. Transmission rod; 53. Protrusion; 6. Cable fixing structure; 61. Cylinder; 62. Clamping block; 621. Slot; 622. Clamping block; 623. Square groove; 624. Friction texture; 63. Mounting plate; 64. Spring; 7. Fan assembly. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1 to 8 A dynamic compensation power quality monitoring device includes a main body 1 and a housing 2, wherein the main body 1 is assembled inside the housing 2, a rear cover 3 is fixedly installed at the rear end of the housing 2, a temperature control structure 4 is assembled at the rear end of the main body 1, a ventilation structure 5 is assembled on the rear cover 3, and the temperature control structure 4 adjusts the opening and closing of the ventilation structure 5. A fan assembly 7 is assembled on the rear side of the lower surface of the housing 2.

[0027] The housing 2 protects the main body 1 of the equipment; after removing the rear cover 3, the main body 1 of the equipment can be taken out, which is convenient for loading, unloading and maintenance.

[0028] like Figure 3 and Figure 5 As shown, the temperature control structure 4 includes a protective cover 41 and a bimetallic spiral blade 42. Both the protective cover 41 and the bimetallic spiral blade 42 are fixedly installed on the rear wall of the main body 1 of the equipment. The bimetallic spiral blade 42 is located inside the protective cover 41. The bimetallic spiral blade 42 is composed of an active metal blade and a passive metal blade spliced ​​together. Both the active metal blade and the passive metal blade are spiral-shaped. The passive metal blade is stacked and assembled on the rear side of the active metal blade along the axial direction. A connecting plate 43 is integrally formed at the rear end of the passive metal blade. A moving rod 44 is fixedly installed at the inner end of the connecting plate 43. A push rod 45 is fixedly installed at the rear end of the moving rod 44.

[0029] A heat-conducting rod is installed in the area with the highest heat inside the main body 1. The heat-conducting rod has two leads, one of which is connected to a bimetallic spiral 42. This allows the bimetallic spiral 42 to sense the temperature inside the main body 1 in real time and deform according to temperature changes. Due to its structural design, when it deforms, the bimetallic spiral 42 will stretch outward along the axial direction, thereby driving the moving rod 44 and the push rod 45 to move outward, and finally pushing open the louver blades 51. This achieves dynamic compensation for heat dissipation. The higher the temperature inside the main body 1, the larger the opening of the louver blades 51, and vice versa. This can solve the energy consumption problem.

[0030] The bimetallic spiral 42 converts temperature changes into physical movement, allowing adjustment of the louver blades 51 opening without involving electricity. This ensures good ventilation and protects internal components even in the event of a control circuit failure.

[0031] Specifically, such as Figure 3 As shown, slide rails 21 are fixedly installed on the inner upper and lower surfaces of the housing 2, and slide rods 11 are fixedly installed on the upper and lower surfaces of the equipment body 1. The slide rods 11 are movably mounted on the slide rails 21, and through holes are evenly opened on the side surface of the slide rails 21.

[0032] Through holes are channels for air circulation.

[0033] Specifically, such as Figure 3 As shown, a heat-conducting plate 12 parallel to the slide rail 21 is fixedly installed on the lower surface of the main body 1 of the device, and heat dissipation fins 13 are uniformly fixedly installed on the lower surface of the heat-conducting plate 12.

[0034] The other end of the heat-conducting rod is connected to the heat-conducting plate 12, and heat dissipation is achieved by contacting the flowing air at the heat-conducting plate 12 and the heat dissipation fins 13.

[0035] Specifically, such as Figure 3 As shown, a guide cover 31 is fixedly installed on the inner wall of the rear cover 3, and the opening of the guide cover 31 faces upward. A filter screen 32 is fixedly installed at the opening of the guide cover 31. A guide plate 33 is integrally formed on the outer wall of the opening of the guide cover 31, and the guide plate 33 is attached to the rear surface of the main body 1 of the equipment.

[0036] Under the action of the guide cover 31 and the guide plate 33, the airflow can be guided; after the fan in the fan assembly 7 is started and the louver blades 51 are opened, the air flows in from the louver blades 51, and flows into the upper side of the main body 1 through the guide cover 31 and the guide plate 33. Then the air flows from both sides through the through holes to the heat conduction plate 12 and the heat dissipation fins 13 to complete the heat exchange, and finally flows out from the fan assembly 7.

[0037] The filter 32 effectively blocks dust from entering, and works with the louver blades 51 to block impurities and dust in the air.

[0038] The guide cover 31 has a hole through which the moving rod 44 passes, thereby ensuring that the push rod 45 can contact the louver blade 51.

[0039] Specifically, such as Figure 3 and Figure 4 As shown, the ventilation structure 5 includes louver blades 51 and a transmission rod 52. A rectangular hole is opened on the surface of the rear cover 3. Multiple louver blades 51 are uniformly assembled in the rectangular hole along the vertical direction. A torsion spring is installed at the connection between the louver blades 51 and the rectangular hole. A groove is opened on the outer side of the lower end of each louver blade 51. A protrusion 53 is uniformly integrally formed on the surface of the transmission rod 52. The protrusion 53 is hinged and assembled in the groove.

[0040] The transmission rod 52 can cause all the louver blades 51 to deflect synchronously. When the push rod 45 moves to push one louver blade 51 to open, the transmission rod 52 drives the other louver blades 51 to open synchronously.

[0041] Specifically, such as Figures 6 to 8 As shown, a circular hole is provided on the lower side of the rear surface of the rear cover 3, and a cable fixing structure 6 is installed in the circular hole. The cable fixing structure 6 includes a cylindrical body 61 and a clamping block 62. An mounting plate 63 is fixedly installed on the outer wall of the cylindrical body 61. The mounting plate 63 is fixedly installed on the rear surface of the rear cover 3 by bolts and nuts, and the cylindrical body 61 is installed in the circular hole. An annular groove is provided on the inner wall of the cylindrical body 61, and a clamping block 62 is movably installed in the annular groove. Multiple clamping blocks 62 are combined to form a cylindrical structure, and the cable is clamped in the cylindrical structure.

[0042] Specifically, such as Figure 6 and Figure 8 As shown, a square groove 623 is provided on the outer arc surface of the clamping block 62, and one end of a spring 64 is fixedly installed on the inner wall of the annular groove, while the other end of the spring 64 is fixedly installed in the square groove 623.

[0043] Specifically, such as Figure 8 As shown, a rectangular sidewall of the clamping block 62 has a slot 621, and the other rectangular sidewall of the clamping block 62 is integrally formed with a locking block 622 that matches the slot 621. The inner surface of the clamping block 62 has friction textures 624.

[0044] Before installing the back cover 3, pass the plugs of each cable through the cable fixing structure 6 and insert them into the main body 1 of the device. Then install the back cover 3 and adjust the length of the cables located inside the housing 2.

[0045] In the initial state, spring 64 is in a compressed state, so spring 64 can always provide elastic force. After the back cover 3 is installed, the elastic force of spring 64 makes the clamping block 62 stick tightly to the surface of the cable, and the friction texture 624 increases the friction between the clamping block and the cable, which can effectively prevent the cable inside from being pulled when the outer cable shakes, thereby maintaining a good connection between the plug and the main body 1 of the device.

[0046] The clamping blocks 622 of adjacent clamping blocks 62 are inserted into the slots 621. When clamping cables of different diameters, the sealing between adjacent clamping blocks 62 can be guaranteed, thereby giving the cable fixing structure 6 good sealing performance.

[0047] The above content is only a preferred embodiment of this utility model. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the idea of ​​this utility model. As long as these changes do not depart from the concept of this utility model, they all fall within the protection scope of this utility model.

Claims

1. A dynamic compensation power quality monitoring device, characterized in that: The device includes a main body and a housing, with the main body assembled inside the housing. A rear cover is fixedly installed at the rear end of the housing. A temperature control structure is assembled at the rear end of the main body. A ventilation structure is assembled on the rear cover, and the temperature control structure adjusts the opening and closing of the ventilation structure. A fan assembly is assembled on the rear side of the lower surface of the housing. The temperature control structure includes a protective cover and a bimetallic spiral blade. Both the protective cover and the bimetallic spiral blade are fixedly installed on the rear wall of the main body of the equipment, and the bimetallic spiral blade is located inside the protective cover. The bimetallic spiral blade is composed of an active metal plate and a passive metal plate spliced ​​together. Both the active and passive metal plates are spiral-shaped, and the passive metal plate is stacked and assembled axially on the rear side of the active metal plate. A connecting plate is integrally formed at the rear end of the passive metal plate. A moving rod is fixedly installed at the inner end of the connecting plate, and a push rod is fixedly installed at the rear end of the moving rod.

2. The dynamic compensation power quality monitoring device according to claim 1, characterized in that: The inner surface of the housing is fixedly equipped with slide rails on both the upper and lower surfaces. The upper and lower surfaces of the main body of the equipment are fixedly equipped with slide rods, which are movably mounted on the slide rails. The side surface of the slide rails is uniformly provided with through holes.

3. The dynamic compensation power quality monitoring device according to claim 2, characterized in that: A heat-conducting plate parallel to the slide rail is fixedly installed on the lower surface of the main body of the device, and heat dissipation fins are uniformly fixedly installed on the lower surface of the heat-conducting plate.

4. The dynamic compensation power quality monitoring device according to claim 1, characterized in that: A guide cover is fixedly installed on the inner wall of the rear cover, and the opening of the guide cover faces upward. A filter screen is fixedly installed at the opening of the guide cover. A flow guide plate is integrally formed on the outer wall of the opening of the guide cover, and the flow guide plate is attached to the rear surface of the main body of the equipment.

5. The dynamic compensation power quality monitoring device according to claim 1, characterized in that: The ventilation structure includes louver blades and a transmission rod. The surface of the rear cover has a rectangular hole. Multiple louver blades are uniformly assembled in the rectangular hole along the vertical direction. A torsion spring is installed at the connection between the louver blades and the rectangular hole. The lower outer side of each louver blade has a groove. The surface of the transmission rod is uniformly integrally formed with a protrusion, and the protrusion is hinged and assembled in the groove.

6. The dynamic compensation power quality monitoring device according to claim 1, characterized in that: A circular hole is provided on the lower side of the rear surface of the rear cover, and a cable fixing structure is installed in the circular hole. The cable fixing structure includes a cylindrical body and a clamping block. An installation plate is fixedly installed on the outer wall of the cylindrical body. The installation plate is fixedly installed on the rear surface of the rear cover by bolts and nuts, and the cylindrical body is installed in the circular hole. An annular groove is provided on the inner wall of the cylindrical body, and a clamping block is movably installed in the annular groove. Multiple clamping blocks are combined to form a cylindrical structure, and the cable is clamped in the cylindrical structure.

7. The dynamic compensation power quality monitoring device according to claim 6, characterized in that: The outer arc surface of the clamping block is provided with a square groove, and one end of a spring is fixedly installed on the inner wall of the annular groove, while the other end of the spring is fixedly installed in the square groove.

8. The dynamic compensation power quality monitoring device according to claim 6, characterized in that: The clamping block has a slot on one rectangular sidewall and a locking block integrally formed on the other rectangular sidewall that matches the slot. The clamping block has friction texture on its inner surface.

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