CN215870497U - Upper pressure relief type full-insulation ring main unit - Google Patents

Abstract

The utility model provides an upper pressure relief type all-insulation ring main unit which comprises a shell and a pressure relief assembly, wherein a pressure relief hole is formed in the upper part of the shell, the pressure relief assembly comprises a pressure relief plate and a sliding structure, and the pressure relief plate is arranged above the shell in a sliding mode through the sliding structure so as to open or close the pressure relief hole; the sliding structure comprises a sliding column penetrating through the upper part of the shell, a resetting piece which is connected with the sliding column in a sliding manner, is arranged on a sliding sleeve above the shell and is used for driving the sliding column to reset, the upper end of the sliding column is fixedly connected with the bottom surface of the pressure relief plate, and a limiting piece used for limiting the sliding stroke of the sliding column is arranged at the lower end of the sliding column. When forming the high temperature air current in the casing, make the pressure release board use through the cooperation of sliding column and sliding sleeve and shift up this moment under the effect of high temperature air current to the top that makes pressure release board and casing has the difference in height and forms the pressure release export, supplies the high temperature air current exhaust pressure release, and the mode of going up the pressure release like this effectively avoids hindering the site operation personnel at the pressure release in-process, guarantees the pressure release security.

Description

Upper pressure relief type full-insulation ring main unit

Technical Field

The utility model belongs to the technical field of power distribution equipment, and particularly relates to an upper pressure relief type full-insulation ring main unit.

Background

The ring main unit is an electrical device which is provided with a group of transmission and distribution electrical equipment in an insulating cabinet body or is arranged as an assembled interval ring main power supply unit, and the core part of the ring main unit is a load switch and a fuse, so that the ring main unit has the advantages of simple structure, small size, capability of improving power supply parameters and performance, power supply safety and the like. The method is widely applied to distribution stations and box-type substations of load centers such as residential districts, high-rise buildings, factory enterprises and the like.

In the use process of the ring main unit, the operation time of the internal electric elements is too long, or misoperation occurs in the operation process, so that the temperature in the ring main unit is sharply increased, gas can impact all directions of the main unit body, and external parts such as a cabinet door of the main unit body are easily opened, so that field operators are injured. The current solution is to set up the pressure release structure in the cabinet door outside of looped netowrk cabinet, though solved the problem of the inside pressure release of looped netowrk cabinet, the outside formula gas pressure release direction probably causes the cabinet door to dash and open and injure the site operation personnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an upper pressure relief type fully-insulated ring main unit, and aims to solve the technical problems that the ring main unit in the prior art is poor in pressure relief safety and is easy to hurt people.

In order to achieve the above object, an upper pressure relief type fully insulated ring main unit provided in an embodiment of the present invention includes a housing and a pressure relief assembly, wherein a pressure relief hole is formed above the housing, the pressure relief assembly includes a pressure relief plate and a sliding structure, and the pressure relief plate is slidably mounted above the housing through the sliding structure so as to open or close the pressure relief hole; the sliding structure comprises a sliding column penetrating through the upper part of the shell, a sliding sleeve connected with the sliding column in a sliding mode and arranged on the upper part of the shell, and a reset piece used for driving the sliding column to reset, wherein the upper end of the sliding column is fixedly connected with the bottom surface of the pressure relief plate, and the lower end of the sliding column is provided with a limiting piece used for limiting the sliding stroke of the sliding column.

Optionally, a pressure relief cavity is formed above the housing, the pressure relief hole is located in the pressure relief cavity and communicated with the pressure relief cavity, and the pressure relief plate is slidably mounted above the housing through a sliding structure so as to open or close the pressure relief cavity.

Optionally, the bottom surface of the pressure relief plate is provided with a sealing element; the seal is used to seal the junction of the vent plate and the vent chamber when the vent plate closes the vent chamber.

Optionally, the reset member is a reset spring, the reset spring is sleeved on the sliding column, and two ends of the reset spring are respectively abutted to the lower end of the sliding sleeve and the upper end of the limiting member.

Optionally, the limiting member is provided with a buffer member capable of abutting against the bottom surface of the pressure relief plate.

Optionally, the buffer is a soft rubber sleeve.

Optionally, the number of pressure relief holes is at least two, the at least two arrays of pressure relief holes being arranged above the housing.

Optionally, the housing has an electrical chamber and a cooling chamber, the cooling chamber is provided with a cold air assembly for generating cold air, a lower end of the cooling chamber has an air outlet channel for supplying the cold air into the electrical chamber, and an upper end of the cooling chamber has a return channel for returning the cold air in the electrical chamber to the cooling chamber.

Optionally, the electrical room is provided with a wind deflector for guiding the cold wind from the wind outlet channel into the electrical room.

Optionally, the top of the electrical room is provided with a first fan, and the first fan is used for blowing the airflow in the electrical room to the return channel.

One or more technical solutions in the upper pressure relief type fully insulated ring main unit provided by the embodiment of the present invention at least have one of the following technical effects: when high-temperature airflow is generated in the shell, the high-temperature airflow drives the pressure release plate to move towards the upper part of the shell, the pressure release plate is matched with the sliding sleeve to ensure the accuracy of the moving position of the pressure release plate, so that the phenomena that the pressure release plate is not completely released due to insufficient moving-up position of the pressure release plate and cannot move continuously due to clamping of the pressure release plate caused by displacement and offset of the pressure release plate are avoided, meanwhile, the moving-up stroke of the pressure release plate is limited by a limiting part to ensure the accuracy of the displacement of the pressure release plate, when the pressure release plate moves upwards to a preset position, a pressure release outlet is formed by the height difference between the pressure release plate and the upper part of the shell, the high-temperature airflow in the shell is discharged after passing through the pressure release hole and the pressure release outlet in sequence, and when the pressure release in the shell is completely released, the inner part of the shell forms low pressure, which is not enough to keep the pressure release plate in an open state, and the pressure release plate is driven to reset under the action of the gravity and the reset piece at the moment, the pressure relief hole is closed to form waterproof and dustproof sealing for the inside of the shell, so that the mode of pressure relief effectively avoids injuring field operation personnel in the pressure relief process, the pressure relief safety is ensured, the aging of the electronic component under the high-temperature environment is avoided, and the working stability of the electronic component is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a first view angle of the upper pressure relief type fully insulated ring main unit according to the present invention.

Fig. 2 is a schematic structural diagram of a second view angle of the upper pressure relief type fully insulated ring main unit according to the present invention.

Fig. 3 is a sectional view taken along line a-a in fig. 2.

Fig. 4 is a schematic perspective view of a hidden pressure relief plate of the upper pressure relief type fully insulated ring main unit according to the present invention.

Fig. 5 is a schematic perspective view of a pressure relief plate in the upper pressure relief type fully insulated ring main unit according to the present invention.

Wherein, in the figures, the respective reference numerals:

100-a shell, 110-a pressure relief hole, 120-a pressure relief cavity, 130-an electric chamber, 131-an air deflector, 140-a cooling chamber, 141-an air outlet channel and 142-a backflow channel;

200-a pressure relief assembly, 210-a pressure relief plate, 220-a sliding column, 230-a sliding sleeve, 240-a resetting piece, 250-a limiting piece, 260-a sealing piece and 270-a buffering piece;

300-cold air component, 310-condenser, 320-second fan.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 5, an upper pressure relief type fully insulated ring main unit is provided, which includes a casing 100 and a pressure relief assembly 200, wherein a pressure relief hole 110 is formed above the casing 100, the pressure relief assembly 200 includes a pressure relief plate 210 and a sliding structure, the pressure relief plate 210 is slidably mounted above the casing 100 through the sliding structure to open or close the pressure relief hole 110; the sliding structure includes a sliding column 220 penetrating the upper portion of the housing 100, a sliding sleeve 230 slidably connected to the sliding column 220 and disposed above the housing 100, and a reset member 240 for driving the sliding column 220 to reset, wherein the upper end of the sliding column 220 is fixedly connected to the bottom surface of the pressure relief plate 210, and a limiting member 250 for limiting the sliding stroke of the sliding column 220 is disposed at the lower end of the sliding column 220.

Preferably, the stopper 250 is a stopper plate having a size larger than that of the bottom of the sliding sleeve 230.

When high-temperature airflow is generated inside the casing 100, the high-temperature airflow drives the pressure release plate 210 to move towards the upper part of the casing 100, and the sliding column 220 and the sliding sleeve are used in cooperation to ensure the accuracy of the moving position of the pressure release plate 210, so as to avoid the phenomena that the pressure release plate 210 is not completely released due to insufficient moving position of the pressure release plate 210 and the pressure release plate 210 is stuck and cannot continuously move due to displacement and deviation of the pressure release plate 210, and meanwhile, the limiting member 250 is used to limit the upward moving stroke of the pressure release plate 210 to ensure the displacement accuracy of the pressure release plate 210, when the pressure release plate 210 moves to a preset position, a height difference is formed between the pressure release plate 210 and the upper part of the casing 100 at the moment to form a pressure release outlet, the high-temperature airflow inside the casing 100 is discharged after passing through the pressure release hole 110 and the pressure release outlet in sequence, and when the pressure release inside the casing 100 is completed, a low pressure is formed inside the casing 100, which is not enough to keep the pressure release plate 210 in an open state, at this moment, the pressure relief plate 210 is driven to reset under the action of gravity and the reset piece 240 to close the pressure relief hole 110, so that the waterproof and dustproof sealing for the inside of the shell 100 is formed, the on-site operation personnel are effectively prevented from being injured in the pressure relief process by the pressure relief mode, the pressure relief safety is ensured, the aging of electronic components under the high-temperature environment is avoided, and the working stability of the electronic components is ensured.

In one embodiment, the casing 100 has a pressure relief cavity 120 above, the pressure relief hole 110 is located in the pressure relief cavity 120 and is communicated with the pressure relief cavity 120, and the pressure relief plate 210 is slidably mounted above the casing 100 through a sliding structure to open or close the pressure relief cavity 120. When high-temperature airflow enters the pressure relief cavity 120 from the pressure relief hole 110, the high-temperature airflow exhausted from the pressure relief hole 110 diffuses towards the periphery of the pressure relief cavity 120, so that direct impact of the high-temperature airflow on the pressure relief plate 210 is reduced, and the use stability of the pressure relief assembly 200 is ensured.

In one embodiment, the bottom surface of the vent plate 210 is provided with a seal 260; when the pressure relief plate 210 closes the pressure relief cavity 120, the sealing member 260 is used for sealing the joint of the pressure relief plate 210 and the pressure relief cavity 120, preferably, the sealing member 260 is a soft adhesive tape, the soft adhesive tape is bonded along the edge of the pressure relief plate 210, the soft adhesive tape has good elastic performance, when the pressure relief plate 210 closes the pressure relief cavity 120, the joint of the pressure relief plate 210 and the pressure relief cavity 120 can be filled through the soft adhesive tape, and sealing protection is formed to avoid dust and liquid from entering.

In one embodiment, the reset element 240 is a reset spring, the reset spring is sleeved on the sliding column 220, and two ends of the reset spring are respectively abutted against the lower end of the sliding sleeve and the upper end of the limiting element 250. The reset spring has good elastic deformation performance, when the pressure release plate 210 moves upwards, the limiting part 250 extrudes the reset spring along with the sliding column 220 to form energy storage, and after pressure release is completed, the sliding column 220 is driven to reset through the gravity of the pressure release plate 210 and the energy storage, so that the pressure release plate 210 is reset.

In one embodiment, the position-limiting member 250 is provided with a buffer member 270 that can abut against the bottom surface of the pressure-relief plate 210. When the pressure relief plate 210 moves upwards, the buffer 270 buffers the impact between the limiting member 250 and the bottom surface of the pressure relief plate 210, so as to ensure the service life of the two.

In one embodiment, the buffer 270 is a soft rubber sleeve. The flexible glue cover has good elastic buffering performance, and the flexible glue cover is overlapped and is established on locating part 250, and the vertical height of flexible glue cover is greater than the vertical height of locating part 250, utilizes the difference in height of flexible glue cover and locating part 250 to form the installation cavity that is used for installing the reset spring other end, design benefit.

In one embodiment, the number of the pressure relief holes 110 is at least two, and the at least two pressure relief holes 110 are arranged in an array above the housing 100. The arrangement of at least two pressure relief holes 110 effectively improves the pressure relief efficiency, and at least two pressure relief hole 110 arrays are arranged above the casing 100, so that high-temperature airflow impact on each direction of the pressure relief plate 210 is consistent in the pressure relief process, thereby ensuring the upward movement balance of the pressure relief plate 210 and effectively prolonging the service life of the pressure relief plate 210.

In one embodiment, the housing 100 has an electrical chamber 130 and a cooling chamber 140 therein, the cooling chamber 140 is provided with a cool air assembly 300 for generating cool air, a lower end of the cooling chamber 140 has an air outlet channel 141 for allowing cool air to enter the electrical chamber 130, and an upper end of the cooling chamber 140 has a return channel 142 for returning the cool air in the air chamber 130 to the cooling chamber 140.

Specifically, the cool air unit 300 includes a condenser 310 and a second fan 320; in practical applications, the second fan 320 blows the cold air generated by the condenser 310 to the air outlet channel 141 to perform heat exchange and temperature reduction on the electrical room 130, so as to reduce a high temperature phenomenon formed in the electrical room 130, that is, reduce a high temperature airflow, and the airflow subjected to heat exchange and temperature reduction rises to the top of the electrical room 130, enters the cooling room 140 from the return channel 142, is cooled again by the cooling air assembly, and then enters the electrical room 130 from the air outlet channel 141, so that a self-circulation cooling system inside the housing 100 is formed.

In one embodiment, the electrical room 130 is provided with a wind deflector 131, and the wind deflector 131 is used for guiding the cool wind from the wind outlet channel 141 to the electrical room 130. Specifically, the guide plate is obliquely disposed in the electrical chamber 130, and the oblique direction of the guide plate faces the electronic components in the electrical chamber 130, so as to improve the efficiency of flowing cold air to the electronic components in the electrical chamber 130, that is, improve the cooling and heat dissipation efficiency of the electronic components in the electrical chamber 130.

Further, the number of the air deflectors 131 is three, and the three air deflectors 131 are arranged in the electrical chamber 130 in an array, so as to improve the air guiding efficiency, that is, the cooling efficiency of electronic components in the electrical chamber is improved, and at the same time, the sizes of the three air deflectors 131 gradually decrease toward the direction of the air outlet channel 141, so that the cold air flowing out from the air outlet channel 141 can pass through each air deflector 131.

In one embodiment, the top of the electrical room 130 is provided with a first fan (not shown) 132, and the blowing direction of the first fan (not shown) 132 faces the return channel 142. The efficiency of the air flow having undergone heat exchange and temperature reduction entering the return channel 142 is improved by the first fan (not shown) 132, that is, the internal circulation efficiency of the self-circulation cooling system is improved, so as to improve the temperature reduction and heat dissipation effect on the electronic components in the electrical room 130.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Go up pressure release formula all insulation looped netowrk cabinet, its characterized in that: the pressure relief device comprises a shell and a pressure relief assembly, wherein a pressure relief hole is formed in the upper part of the shell, the pressure relief assembly comprises a pressure relief plate and a sliding structure, and the pressure relief plate is slidably mounted above the shell through the sliding structure so as to open or close the pressure relief hole;

the sliding structure comprises a sliding column penetrating through the upper part of the shell, a sliding sleeve connected with the sliding column in a sliding mode and arranged on the upper part of the shell, and a reset piece used for driving the sliding column to reset, wherein the upper end of the sliding column is fixedly connected with the bottom surface of the pressure relief plate, and the lower end of the sliding column is provided with a limiting piece used for limiting the sliding stroke of the sliding column.

2. The upper pressure relief type all-insulated ring main unit according to claim 1, wherein: the pressure relief structure is characterized in that a pressure relief cavity is arranged above the shell, the pressure relief hole is located in the pressure relief cavity and communicated with the pressure relief cavity, and the pressure relief plate is slidably mounted above the shell through a sliding structure so as to open or close the pressure relief cavity.

3. The upper pressure relief type fully insulated ring main unit according to claim 2, wherein: the bottom surface of the pressure relief plate is provided with a sealing element; when the pressure relief plate closes the pressure relief cavity, the sealing element is used for sealing the joint of the pressure relief plate and the pressure relief cavity.

4. The upper pressure relief type fully insulated ring main unit according to any one of claims 1 to 3, wherein: the reset piece is a reset spring, the reset spring is sleeved on the sliding column, and two ends of the reset spring are respectively abutted to the lower end of the sliding sleeve and the upper end of the limiting part.

5. The upper pressure relief type fully insulated ring main unit according to any one of claims 1 to 3, wherein: the limiting part is provided with a buffer part which can be abutted against the bottom surface of the pressure relief plate.

6. The upper pressure relief type fully insulated ring main unit according to claim 5, wherein: the buffer piece is a soft rubber sleeve.

7. The upper pressure relief type fully insulated ring main unit according to any one of claims 1 to 3, wherein: the number of the pressure relief holes is at least two, and the at least two pressure relief hole arrays are arranged above the shell.

8. The upper pressure relief type fully insulated ring main unit according to any one of claims 1 to 3, wherein: the cooling device is characterized in that an electric chamber and a cooling chamber are arranged in the shell, a cold air assembly used for generating cold air is arranged in the cooling chamber, an air outlet channel used for allowing the cold air to enter the electric chamber is formed in the lower end of the cooling chamber, and a backflow channel used for allowing the cold air in the electric chamber to backflow to the cooling chamber is formed in the upper end of the cooling chamber.

9. The upper pressure relief type fully insulated ring main unit according to claim 8, wherein: the electric room is provided with an air deflector which is used for guiding cold air in the air outlet channel to enter the electric room.

10. The upper pressure relief type fully insulated ring main unit according to claim 8, wherein: the top of the electric room is provided with a first fan which is used for blowing airflow in the electric room to the backflow channel.

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