A high-security power distribution device for smart grid

Abstract

The application discloses a high-safety power distribution equipment for a smart grid, which belongs to the technical field of the smart grid, and through cooperation of a dynamic mounting part and a suction and release plate, an electrical element prone to heating is alternately in contact with two heat absorption sections on the suction and release plate, so that the heat absorption efficiency is prevented from being reduced due to continuous temperature rise of a single heat absorption section, in a further improvement, the heat absorption section is selectively attached to a heat accumulation partition plate through magnetic attraction, the unattached side is automatically popped open to expose to a heat collection space for rapid heat dissipation, the heat absorption section can also be composed of multiple stacked heat absorption sheets, the area is doubled after being popped open, and the attachment state can be monitored through an electromagnetic strip and a pressure sensor, even the sheets are repeatedly opened and closed to disturb air flow, so that the heat transfer and heat exchange rate are significantly accelerated, local heat accumulation hazards are effectively eliminated, and the safety and stability of long-term high-load operation of the power distribution equipment are ensured.

Description

Technical Field

[0001] This invention relates to the field of smart grid technology, and in particular to a high-security power distribution device for smart grids. Background Technology

[0002] Smart grids are placing increasingly stringent requirements on the safety and reliability of power distribution equipment. Power distribution equipment integrates a large number of electrical components. With the continuous growth of grid load and the increasing power density of equipment, the heat generated by these components during long-term operation increases significantly. How to efficiently dissipate heat to prevent insulation aging, component failure, or even fire accidents caused by heat accumulation has become a key technical challenge that urgently needs to be addressed in the design and operation of power distribution equipment.

[0003] To improve the heat dissipation capacity of power distribution equipment, existing technologies have explored various approaches. For example, Chinese invention patent application CN116706739A discloses a power distribution cabinet with autonomous ventilation and heat exchange function; Chinese utility model patent CN213341145U discloses a multi-circuit zoned heat dissipation integrated electrical control cabinet; Chinese invention patent CN118554305A discloses a low-voltage switchgear integrating an all-round multi-angle heat dissipation structure; and Chinese patent CN111725714B discloses a dynamically adjustable shock-absorbing heat dissipation power cabinet. All of these technologies have provided heat dissipation improvement solutions, but none of them involve the dynamic switching between heat absorption and heat dissipation states of the heat-absorbing components themselves.

[0004] Existing heat dissipation technologies for power distribution equipment mainly focus on optimizing air duct structure, increasing the number or power of fans, and adding heat-absorbing (heat-dissipating) components. However, under long-term high-load operation conditions, the heat-absorbing components that continuously undertake the task of heat absorption gradually reduce their heat absorption efficiency due to their own temperature rising and the temperature difference with the heat source decreasing. This can easily lead to localized heat accumulation, affecting the safe operation and overall lifespan of the power distribution equipment. Summary of the Invention

[0005] The core of this invention lies in the coordinated arrangement of a dynamic mounting frame and a heat absorption plate. By continuously changing the relative positions of the electrical components and the heat absorption plate, the heat absorption plate can always maintain a large temperature difference to absorb the heat generated by the electrical components, thus significantly accelerating heat dissipation and solving the problem of local heat accumulation caused by the fixed positions of the electrical components and the heat absorption plate in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A high-security power distribution device for smart grids includes a device body with a heat-retaining baffle fixedly connected inside the device body by bolts. Multiple sets of dynamic mounting brackets are provided on the front of the heat-retaining baffle. Multiple electrical components inside the power distribution device are respectively mounted on the multiple sets of dynamic mounting brackets. A cooling fan is also installed on the back of the device body with the air intake end of the cooling fan facing the device body. The dynamic mounting bracket includes a fixed mounting strip fixedly connected to the heat-retaining baffle, a floating mounting strip slidably connected to the heat-retaining baffle, and at least two electric push rods fixedly connected between the fixed mounting strip and the floating mounting strip. Multiple electrical components are located on the floating mounting strip.

[0008] The back of the heat-concentrating partition is also fixedly equipped with multiple heat-absorbing and de-absorbing plates, each corresponding to a multiple dynamic mounting bracket. Each heat-absorbing and de-absorbing plate includes two heat-absorbing sections and a positioning section fixedly connected between the two heat-absorbing sections. The floating mounting strip corresponds to one of the heat-absorbing sections in the corresponding heat-absorbing and de-absorbing plate.

[0009] Furthermore, the heat-collecting baffle does not contact the inner wall of the equipment body, and a heat-collecting space is formed between the heat-collecting baffle and the equipment body, with the air intake end of the cooling fan communicating with the heat-collecting space.

[0010] Furthermore, both the heat-absorbing section and the heat-concentrating partition are made of thermally conductive materials, and the thermal conductivity of the heat-absorbing section is higher than that of the heat-concentrating partition. The positioning section is made of thermally insulating materials.

[0011] Furthermore, the positioning section includes two outer guide strips and a positioning strip fixedly connected between the two outer guide strips. The fixed connection between the suction plate and the heat-gathering partition is located on the positioning strip. Both outer guide strips are arc-shaped elastic structures, while the positioning strip is a rigid, shaped structure.

[0012] Furthermore, magnetic sheets are embedded at the ends of both heat-absorbing sections away from the heat-gathering partition, and the floating mounting strips are made of iron.

[0013] Furthermore, the heat-absorbing section includes multiple heat-absorbing sheets stacked on top of each other, each heat-absorbing sheet being fixedly connected to a corresponding positioning strip, and a magnetic sheet is set on the heat-absorbing sheet furthest from the heat-gathering partition.

[0014] Furthermore, an electromagnetic strip is embedded inside the heat-gathering partition, and the electromagnetic strip is wrapped with a magnetically shielding semi-enclosure. The opening of the magnetically shielding semi-enclosure faces the heat-absorbing section. When energized, the electromagnetic strip generates a magnetic attraction force on the magnetic sheet.

[0015] Furthermore, pressure sensors are fixedly installed at the ends of both heat-absorbing sections near the heat-gathering partition. The detection end of the pressure sensor is flush with the surface of the heat-absorbing section, and the pressure sensor is located on the side of the heat-absorbing section away from the positioning section.

[0016] Compared with the prior art, the advantages of this invention are:

[0017] (1) This solution uses a dynamic mounting frame and a heat absorption plate to continuously change the relative position of the electrical components and the heat absorption plate, so that the heat absorption plate can always maintain a large temperature difference to absorb the heat generated by the electrical components, thus significantly accelerating heat dissipation and solving the problem of local heat accumulation caused by the fixed position of the electrical components and the heat absorption plate in the prior art.

[0018] (2) By designing the two heat-absorbing sections of the heat-absorbing plate, which are mainly responsible for heat absorption, to move with the dynamic mounting frame, one adaptively contacts the heat-absorbing plate and mainly absorbs heat, while the other separates from the heat-absorbing plate and mainly releases heat, the main functions of the two are constantly alternated, thereby further enhancing the temperature difference between the heat-absorbing section and the heat-absorbing plate when in contact with the heat-absorbing plate.

[0019] (3) The heat absorption section is composed of multiple stacked heat absorption sheets, which can naturally disperse when they are opened, increasing the heat dissipation area by a factor of two and greatly accelerating heat dissipation. An electromagnetic strip is added to assist in the attraction, and a pressure sensor is used to monitor the adhesion status; the heat absorption sheets can also be repeatedly opened and closed by switching the power on and off to disturb the airflow, further enhancing the heat exchange efficiency and completely eliminating the risk of heat accumulation. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a top cross-sectional view of the present invention;

[0022] Figure 3 This is a front view of the invention after the door is opened;

[0023] Figure 4 This is a schematic diagram showing the positional change of the floating mounting strip carrying the electrical components according to the present invention;

[0024] Figure 5 This is a side view of the thermal insulation partition of the present invention;

[0025] Figure 6 This is a back view of the thermal insulation partition of the present invention;

[0026] Figure 7 This is a side view of the suction and discharge plate in the second embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram illustrating the changes in the working process of the suction and discharge plate in the second embodiment of the present invention;

[0028] Figure 9 This is a side view of the suction and discharge plate in the third embodiment of the present invention;

[0029] Figure 10 This is a side view of the suction and release plate when an electromagnetic strip and a pressure sensor are added in the third embodiment of the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1 Equipment body, 101 Cooling fan, 21 Fixed mounting strip, 22 Floating mounting strip, 23 Electric push rod, 201 Electrical components, 3 Heat-gathering partition, 4 Absorption and release plate, 41 Heat-absorbing section, 42 Positioning section, 411 Heat-absorbing sheet, 421 Outer guide strip, 422 Positioning strip, 401 Magnetic sheet, 402 Pressure sensor, 403 Electromagnetic strip, 404 Magnetic shielding semi-enclosure. Detailed Implementation

[0032] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0033] First implementation method:

[0034] Figures 1-3 The diagram illustrates a high-security power distribution device for a smart grid, comprising a device body 1. A heat-collecting baffle 3 is bolted to the inside of the device body 1. Multiple sets of dynamic mounting brackets are arranged on the front of the heat-collecting baffle 3, and multiple electrical components 201 within the power distribution device are respectively mounted on these dynamic mounting brackets. A cooling fan 101 is also installed on the back of the device body 1, with the suction end of the cooling fan 101 facing the device body 1. The heat-collecting baffle 3 does not contact the inner wall of the device body 1, and a heat-collecting space is formed between the heat-collecting baffle 3 and the device body 1. The suction end of the cooling fan 101 communicates with the heat-collecting space. Through the arrangement of the heat-collecting baffle 3 and the heat-collecting space, most of the heat generated by the electrical components within the device body 1 can be transferred to the rear of the device body 1. Then, in conjunction with the action of the cooling fan 101, the convection between the hot air in the heat-collecting space and the outside air can be directly forced, significantly accelerating the heat dissipation effect. Simultaneously, the heat-collecting space also provides a certain amount of space for the suction and discharge plate 4.

[0035] The dynamic mounting frame includes a fixed mounting strip 21 fixedly connected to the thermal insulation partition 3, a floating mounting strip 22 slidably connected to the thermal insulation partition 3, and at least two electric push rods 23 fixedly connected between the fixed mounting strip 21 and the floating mounting strip 22. Multiple electrical components 201 are located on the floating mounting strip 22, such as... Figure 4 When this power distribution equipment is working, the position of the floating mounting strip 22 can be changed by controlling the extension and retraction of the electric push rod 23, thereby changing the position of the heat-generating electrical component 201 on it, so that the contact point between the heat-generating partition 3 and the electrical component 201 can be constantly changed. This ensures that the corresponding contact point between the heat-generating partition 3 and the electrical component 201 can always maintain a certain temperature difference, thereby improving the heat absorption effect of the heat-generating partition 3 and the heat absorption plate 4 on it on the electrical component 201, allowing heat to be transferred from the electrical component 201 more quickly, effectively accelerating heat dissipation, and reducing the risk of abnormal temperature rise caused by heat accumulation.

[0036] like Figures 5-6The back of the heat-collecting partition 3 is also fixedly provided with multiple heat-absorbing and releasing plates 4, each corresponding to a multiple dynamic mounting bracket. Each heat-absorbing and releasing plate 4 includes two heat-absorbing sections 41 and a positioning section 42 fixedly connected between the two heat-absorbing sections 41. The floating mounting strip 22 corresponds to one of the heat-absorbing sections 41 in the heat-collecting and releasing plate 4. Both the heat-absorbing sections 41 and the heat-collecting partition 3 are made of thermally conductive materials, so that both can absorb the heat generated by the electrical component 201, thereby causing the heat to accumulate towards the heat collection space. This facilitates the cooling fan 101 to exhaust the heat to the air through forced convection. Moreover, the thermal conductivity of the heat-absorbing section 41 is higher than that of the heat-collecting partition 3, so that the heat in the area facing the electrical component 201 is absorbed by the heat-collecting partition. After adsorption, the heat absorber can move further away from the electrical component 201 and towards the heat absorption section 41. At the same time, the heat absorption section 41 is directly exposed to the heat collection space, which facilitates heat exchange with the flowing air. The positioning section 42 is made of heat insulation material, so that after the heat absorber section 41 corresponding to the electrical component 201 adsorbs heat, the heat is not easy to spread across the positioning section 42 to another heat absorber section 41. This creates a significant temperature difference between the other heat absorber section 41 and the current heat absorber section 41. When the electric push rod 23 extends and retracts to move the electrical component 201 to the position corresponding to the other heat absorber section 41, the heat absorber section 41 can maintain better heat absorption, thus facilitating the faster removal of heat from the electrical component 201 and accelerating heat dissipation.

[0037] It is worth noting that, in order to ensure the stability of electrical components 201 before and after movement, the wiring cables of all electrical components 201 within the floating mounting strip 22 are reserved with sufficient movement length, or spiral cables are used.

[0038] In summary, by setting up a dynamic mounting bracket, the position of the electrical component 201 can be moved back and forth during the operation of this equipment. After one heat-absorbing section 41 has absorbed enough heat and its temperature has increased, the electrical component 201 can move to correspond with another heat-absorbing section 41 with a lower temperature, thereby accelerating heat transfer. The heat-absorbing section 41 with a higher temperature does not undertake the main heat absorption work, allowing the heat on it to be quickly dissipated with the strong convection air. When its temperature decreases, it can correspond with the electrical component 201 to absorb heat again. Compared with a fixed heat-absorbing plate, the heat absorption speed of the heat-absorbing plate 4 to the electrical component 201 is greatly improved, the heat dissipation is significantly accelerated, and the hidden danger of abnormal temperature rise caused by heat accumulation is effectively avoided.

[0039] Second implementation method:

[0040] This embodiment further improves the suction and discharge plate 4 based on the first embodiment, while the rest remains the same as the first embodiment.

[0041] like Figure 7The positioning section 42 includes two outer guide bars 421 and a positioning bar 422 fixedly connected between the two outer guide bars 421. The fixed connection between the suction plate 4 and the heat-gathering partition 3 is located on the positioning bar 422. Both outer guide bars 421 are arc-shaped elastic structures, and the positioning bar 422 is a rigid shaped structure. The ends of the two heat-absorbing sections 41 away from the heat-gathering partition 3 are each inlaid with magnetic sheets 401. The floating mounting bar 22 is made of iron, so that there is a magnetic attraction between the floating mounting bar 22 and the magnetic sheet 401. When the floating mounting bar 22 corresponds to the heat-absorbing section 41, it can attract the heat-absorbing section 41 and make it move.

[0042] like Figure 7 It can be seen that under normal circumstances, the heat-absorbing sections 41 on both sides of the heat-absorbing plate 4 do not contact the heat-collecting partition plate 3. Figure 8 Only when the electric push rod 23 controls the floating mounting strip 22 to move so that the floating mounting strip 22 corresponds to one of the heat-absorbing sections 41, the corresponding heat-absorbing section 41 moves towards the heat-collecting partition 3 under the influence of the magnetic attraction between the floating mounting strip 22 and the magnetic sheet 401, until it contacts the heat-collecting partition 3, thereby stably absorbing the heat from the electrical component 201 on the heat-collecting partition 3, achieving the effect of unilateral heat collection. After a period of time (e.g., 5 minutes, the specific duration can be set according to actual needs), the electric push rod 23 is controlled to extend or shorten in the opposite direction, thereby moving the floating mounting strip 22 and the electrical component 201 on it to correspond to another heat-absorbing section 41. At this time, the temperature corresponding to it... The heat-absorbing section 41 with a lower temperature is also adsorbed and attached to the heat-gathering partition 3, realizing heat gathering on the other side. The heat-absorbing section 41, which has just absorbed a lot of heat and caused the temperature to rise, loses the binding force of the floating mounting strip 22 and separates from the heat-gathering partition 3 under the action of the restoring elasticity of the positioning strip 422. This prevents it from directly absorbing heat and instead exposes it completely to the heat-gathering space, allowing it to fully contact the rapidly moving air and achieve rapid heat dissipation. By continuously repeating the above process, the heat-gathering partition 3 can always maintain a relatively low temperature for heat absorption and dissipation relative to the heat-gathering partition 3 and the electrical component 201, greatly accelerating the heat dissipation effect and further reducing the possibility of heat accumulation at the electrical component 201.

[0043] The third implementation method:

[0044] This embodiment further improves the heat absorption section 41 based on the second embodiment, as detailed below:

[0045] like Figure 9The heat-absorbing section 41 includes multiple heat-absorbing sheets 411 stacked on top of each other. Each heat-absorbing sheet 411 is fixedly connected to a corresponding positioning strip 422, so that the heat-absorbing section 41 that is not in contact with the heat-gathering partition 3 can naturally disperse under the action of gravity, thereby increasing the area of ​​the heat-absorbing section 41 in direct contact with the air by a factor of two, so that the heat adsorbed on it can be dissipated more quickly. Compared with the second embodiment, the interval time of controlling the extension and retraction of the electric push rod 23 can be greatly shortened, that is, the frequency of the two heat-absorbing sections 41 working alternately can be increased, thereby further enhancing the heat dissipation effect on the electrical component 201. The magnetic sheet 401 is set on the heat-absorbing sheet 411 farthest from the heat-gathering partition 3. When the floating mounting strip 22 generates an adsorption force on the magnetic sheet 401, it can drive multiple heat-absorbing sheets 411 to move together toward the heat-gathering partition 3 until they come into contact with the heat-gathering partition 3.

[0046] like Figure 10 An electromagnetic strip 403 is embedded inside the heat-collecting partition 3. The electromagnetic strip is wrapped with a magnetically shielding semi-enclosure 404. The magnetically shielding semi-enclosure 404 can effectively reduce the interference of the electromagnetic strip 403 to the electrical component 201 after it is energized. The opening of the magnetically shielding semi-enclosure 404 faces the heat-absorbing section 41. After being energized, the electromagnetic strip generates a magnetic attraction force on the magnetic sheet 401. Pressure sensors 402 are fixedly installed at the ends of the two heat-absorbing sections 41 near the heat-collecting partition 3. The detection end of the pressure sensor 402 is flush with the surface of the heat-absorbing section 41, and the pressure sensor 402 is located on the side of the heat-absorbing section 41 away from the positioning section 42. By setting the pressure sensor 402, it is possible to effectively monitor whether the heat-absorbing section 41 is in contact with the heat-collecting partition 3. When it does not generate data, the electromagnetic strip 403 can be energized to increase the magnetic attraction force on the magnetic sheet 401, which helps the multiple heat-absorbing sheets 411 on the corresponding side to gather and contact the heat-collecting partition 3, thereby stabilizing heat absorption.

[0047] For the heat-absorbing section 41 that is not on the side corresponding to the floating mounting strip 22, the corresponding electromagnetic strip 403 can be controlled to continuously turn on and off, thereby causing multiple heat-absorbing sheets 411 to repeatedly approach the heat-gathering partition 3 and then naturally disperse, so that the heat-absorbing sheets 411 are in a dynamic state, disturbing the airflow nearby, making their heat exchange rate with the air faster and more effective.

[0048] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A high-security power distribution device for smart grids, comprising a device body (1), characterized in that: The equipment body (1) is internally fixedly connected to a heat-retaining partition (3) by bolts. The front of the heat-retaining partition (3) is provided with multiple sets of dynamic mounting brackets. Multiple electrical components (201) in the power distribution equipment are respectively installed on multiple sets of dynamic mounting brackets. A cooling fan (101) is also installed on the back of the equipment body (1). The air intake end of the cooling fan (101) faces the equipment body (1). The dynamic mounting bracket includes a fixed mounting strip (21) fixedly connected to the heat-retaining partition (3), a floating mounting strip (22) slidably connected to the heat-retaining partition (3), and at least two electric push rods (23) fixedly connected between the fixed mounting strip (21) and the floating mounting strip (22). Multiple electrical components (201) are located on the floating mounting strip (22). The back of the heat-absorbing partition (3) is also fixedly provided with a plurality of heat-absorbing plates (4) corresponding to a plurality of dynamic mounting brackets. The heat-absorbing plate (4) includes two heat-absorbing sections (41) and a positioning section (42) fixedly connected between the two heat-absorbing sections (41). The floating mounting strip (22) corresponds to one of the heat-absorbing sections (41) of the corresponding heat-absorbing plate (4).

2. The high-security power distribution equipment for smart grids according to claim 1, characterized in that: The heat-collecting partition (3) does not contact the inner wall of the equipment body (1), and a heat-collecting space is formed between the heat-collecting partition (3) and the equipment body (1), and the air intake end of the cooling fan (101) is connected to the heat-collecting space.

3. A high-security power distribution device for smart grids according to claim 1, characterized in that: The heat-absorbing section (41) and the heat-concentrating partition (3) are both made of thermally conductive materials, and the thermal conductivity of the heat-absorbing section (41) is higher than that of the heat-concentrating partition (3). The positioning section (42) is made of thermally insulating materials.

4. A high-security power distribution device for smart grids according to claim 3, characterized in that: The positioning section (42) includes two outer guide bars (421) and a positioning bar (422) fixedly connected between the two outer guide bars (421). The fixed connection between the suction plate (4) and the heat-concentrating partition (3) is located on the positioning bar (422). Both outer guide bars (421) are arc-shaped elastic structures, and the positioning bar (422) is a rigid shaped structure.

5. A high-security power distribution device for smart grids according to claim 4, characterized in that: Both of the heat-absorbing sections (41) are embedded with magnetic sheets (401) at the ends away from the heat-gathering partition (3), and the floating mounting strip (22) is made of iron.

6. A high-security power distribution device for a smart grid according to claim 5, characterized in that: The heat-absorbing section (41) includes multiple heat-absorbing sheets (411) stacked on top of each other. Each heat-absorbing sheet (411) is fixedly connected to a corresponding positioning strip (422). The magnetic sheet (401) is set on the heat-absorbing sheet (411) furthest from the heat-collecting partition (3).

7. A high-security power distribution device for smart grids according to claim 6, characterized in that: The heat-gathering partition (3) is also inlaid with an electromagnetic strip (403), and the electromagnetic strip is wrapped with a magnetic shielding half-sleeve (404). The opening of the magnetic shielding half-sleeve (404) faces the heat-absorbing section (41). When energized, the electromagnetic strip generates a magnetic attraction force on the magnetic sheet (401).

8. A high-security power distribution device for smart grids according to claim 7, characterized in that: Pressure sensors (402) are fixedly installed at the ends of the two heat-absorbing sections (41) near the heat-collecting partition (3). The detection end of the pressure sensor (402) is flush with the surface of the heat-absorbing section (41), and the pressure sensor (402) is located on the side of the heat-absorbing section (41) away from the positioning section (42).

Images