Ring main unit shell for box transformer substation

Abstract

The utility model discloses a ring main unit casing for a box transformer substation, which belongs to the technical field of power equipment and comprises a cable chamber, a mechanism chamber, an instrument chamber and a main loop gas tank, the top end of the cable chamber is detachably connected with the mechanism chamber and the main loop gas tank, the top end of the mechanism chamber is detachably connected with the instrument chamber, and one side of the main loop gas tank is further provided with a dehumidification assembly. A supporting part is arranged at the joint of the cable chamber and the main loop gas tank; according to the utility model, the ring main unit housing is changed into different detachable modules through the cable chamber, the mechanism chamber, the instrument chamber and the main loop gas tank, so that the ring main unit housing is more convenient to maintain; and meanwhile, the dehumidifying component capable of being recycled is arranged and can be recycled, so that the gas in the main loop gas tank is efficiently dehumidified.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power equipment, and in particular relates to a ring network cabinet shell for a box transformer. Background Art

[0002] The box-type substation includes high-voltage cabinets, transformer rooms, low-voltage cabinets and other parts. Among them, the common box-type environmentally friendly gas ring network cabinet is used in the high-voltage cabinet of the box-type substation.

[0003] The existing box-type transformer ring network cabinet gas box has the problems of large size, low strength, and inconvenient assembly when in use.

[0004] The patent with announcement number CN209104595U discloses a ring network cabinet shell, including a cabinet body, a cabinet door connected to the cabinet body, and a pillar fixed to the lower end of the cabinet body. The cabinet body includes a top plate, two vertically arranged side plates, a bottom plate parallel to the top plate, and a back plate perpendicular to the side plates. The upper and lower end faces of the cabinet door are both provided with sliding grooves, and the sliding grooves include guide grooves and grooves, and the guide grooves are connected to the grooves; a sliding assembly for pushing and pulling the cabinet door is provided in the cabinet body, and the sliding assembly includes large steel balls and small steel balls. When pushing and pulling, the small steel balls cooperate with the guide grooves. When flipping, the large steel balls are in the grooves, and the large steel balls are used as the rotation fulcrum.

[0005] The ring network cabinet shell disclosed in the above patent is an integrated design with a large volume and low strength. It is inconvenient to disassemble for maintenance. At the same time, the parts inside the ring network cabinet shell are easily damaged due to excessive humidity. Therefore, how to provide a detachable ring network cabinet shell for box transformers is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] The purpose of the utility model is to provide a ring network cabinet housing for a box-type transformer to solve the deficiencies in the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A ring network cabinet shell for a box transformer includes a cable room, a mechanism room, an instrument room and a main circuit gas box. The top of the cable room is detachably connected to the mechanism room and the main circuit gas box. The top of the mechanism room is detachably connected to the instrument room. A dehumidification component is also provided on one side of the main circuit gas box. A supporting component is provided at the connection between the cable room and the main circuit gas box.

[0009] Furthermore, the supporting component includes a partition fixed inside the cable chamber, and also includes a beam and a supporting plate fixed at the top end inside the cable chamber.

[0010] Furthermore, the dehumidification component includes an inlet main pipe, an inlet branch pipe, an outlet main pipe, an outlet branch pipe and multiple dehumidification devices, one end of the multiple dehumidification devices is respectively connected to the inlet branch pipe, and the other end is respectively connected to the outlet branch pipe, the end of the multiple inlet branch pipes away from the dehumidification device is connected to one end of the inlet main pipe, the other end of the inlet main pipe is connected to the main circuit air box, the end of the multiple outlet branch pipes away from the dehumidification device is connected to one end of the outlet main pipe, and the other end of the outlet main pipe is connected to the main circuit air box, a ventilation duct is also provided on the top of the dehumidification device, and valves are provided on the inlet branch pipe, inlet main pipe, outlet main pipe, outlet branch pipe and ventilation duct.

[0011] Furthermore, the dehumidification device includes a dehumidification device shell, the interior of the dehumidification device shell is divided into a dehumidification chamber and a heating chamber by a partition, the dehumidification chamber is provided with a desiccant and a humidity sensor, the heating chamber is provided with an electric heater and a temperature sensor, and the partition is provided with multiple through holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model converts the ring network cabinet shell into different detachable modules through the cable room, mechanism room, instrument room and main circuit gas box, making the ring network cabinet shell more convenient to repair; at the same time, a recyclable dehumidification component is provided, which can be recycled to dehumidify the gas in the main circuit gas box with high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model after overall installation.

[0016] Figure 2 Schematic diagram of the main circuit gas tank installation position structure.

[0017] Figure 3 It is a structural diagram of the present utility model.

[0018] Figure 4 This is a structural diagram of the dehumidification device.

[0019] Figure 5 This is a schematic diagram of the front structure of the dehumidification device.

[0020] Among them, 1-main circuit air box, 2-inlet main pipeline, 3-inlet branch pipeline, 4-dehumidification device, 4.1-dehumidification chamber, 4.2-desiccant, 4.3-partition, 4.4-heating chamber, 5-ventilation duct, 6-outlet branch pipeline, 7-outlet main pipeline, 8-instrument room, 9-mechanism room, 10-cable room, 11-support components. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 5 As shown, the present invention provides a ring main unit (RMU) housing for a box-type transformer substation, comprising a cable compartment 10, a mechanism compartment 9, an instrument compartment 8, and a main circuit gas tank 1. The cable compartment 10 is detachably connected to the mechanism compartment 9 and the main circuit gas tank 1 at its top. The mechanism compartment 9 is detachably connected to the instrument compartment 8 at its top. A dehumidification assembly is also provided on one side of the main circuit gas tank 1. A support member 11 is provided at the connection between the cable compartment 10 and the main circuit gas tank 1. Specifically, in this embodiment, the detachable connection is achieved via screws and nuts. The multiple modules formed by the cable compartment 10, the mechanism compartment 9, the instrument compartment 8, and the main circuit gas tank 1 reduce the overall volume of the RMU housing. The main circuit gas tank 1 utilizes a C-GIS gas switchgear design, using environmentally friendly gas as the insulating medium. While ensuring airtightness, this design protects the switchgear from external environmental influences such as condensation, dirt, chemicals, and small animals. It is rust-free, has low oxidation levels, and offers high insulation reliability. Environmentally friendly gas is readily available, low-cost, and pollution-free, meeting the green environmental protection requirements advocated by the government.

[0023] In this embodiment, the support component 11 includes a partition fixed inside the cable chamber 10 , and also includes a beam and a support plate fixed at the top end inside the cable chamber 10 .

[0024] In this embodiment, the dehumidification component includes an inlet main pipe 2, an inlet branch pipe 3, an outlet main pipe 7, an outlet branch pipe 6 and multiple dehumidification devices 4, one end of the multiple dehumidification devices 4 is respectively connected to the inlet branch pipe 3, and the other end is respectively connected to the outlet branch pipe 6, the end of the multiple inlet branch pipes 3 away from the dehumidification device 4 is connected to one end of the inlet main pipe 2, the other end of the inlet main pipe 2 is connected to the main circuit air box 1, the end of the multiple outlet branch pipes 6 away from the dehumidification device 4 is connected to one end of the outlet main pipe 7, and the other end of the outlet main pipe 7 is connected to the main circuit air box 1, and a ventilation pipe 5 is also provided at the top of the dehumidification device 4, and valves are provided on the inlet branch pipe 3, the inlet main pipe 2, the outlet main pipe 7, the outlet branch pipe 6 and the ventilation pipe 5; an air pump (not shown in the figure) is also provided on the inlet main pipe 2, which can promote the air circulation in the dehumidification component to achieve better dehumidification effect.

[0025] In this embodiment, the dehumidification device 4 includes a dehumidification device shell, and the interior of the dehumidification device shell is divided into a dehumidification chamber 4.1 and a heating chamber 4.4 by a partition 4.3. A desiccant 4.2 and a humidity sensor are provided in the dehumidification chamber 4.1, and an electric heater and a temperature sensor are provided in the heating chamber 4.4. A plurality of through holes are provided on the partition 4.3; the through holes on the partition 4.3 facilitate the passage of airflow and are also beneficial to the heat transfer of the electric heater; the desiccant 4.2 is used to absorb moisture in the gas for dehumidification. In addition, an observation window can also be provided on the dehumidification device shell.

[0026] Working principle: Use screws and nuts to securely connect the cable chamber 10, mechanism chamber 9, instrument chamber 8, and main circuit gas box 1. When using the dehumidifier 4, close all valves, open the valves on the inlet main pipe 2, outlet main pipe 7, outlet branch pipe 6, and the corresponding inlet branch pipe 3 connected to the first dehumidifier 4, and turn on the air pump to allow gas to flow into and out of the first dehumidifier 4. After the gas enters the first dehumidifier 4, the desiccant 4.2 can be dehumidified, thereby preventing equipment damage caused by excessive humidity inside the ring main unit shell;

[0027] When the dehumidification effect of the desiccant 4.2 becomes poor after long-term use, close the inlet branch pipe 3 and the outlet branch pipe 6 of the first dehumidification device 4, open the inlet branch pipe 3 and the outlet branch pipe 6 connected to the second dehumidification device 4, and at the same time open the valve on the ventilation pipe 5 connected to the first dehumidification device 4, turn on the electric heater in the first dehumidification device 4, heat the desiccant, and discharge water vapor from the ventilation pipe 5, thereby achieving dehumidification and drying of the desiccant, which is convenient for reuse later.

[0028] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0029] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ring main unit housing for a box-type transformer, characterized in that: The invention comprises a cable chamber (10), a mechanism chamber (9), an instrument chamber (8) and a main circuit air box (1); the top of the cable chamber (10) is detachably connected to the mechanism chamber (9) and the main circuit air box (1); the top of the mechanism chamber (9) is detachably connected to the instrument chamber (8); a dehumidification component is further provided on one side of the main circuit air box (1); and a support component (11) is provided at the connection between the cable chamber (10) and the main circuit air box (1).

2. The ring main unit housing for a box-type transformer according to claim 1, characterized in that: The supporting component (11) includes a partition fixed inside the cable chamber (10), and also includes a crossbeam and a supporting plate fixed at the top end inside the cable chamber (10).

3. The ring main unit housing for a box-type transformer according to claim 1, characterized in that: The dehumidification assembly comprises an inlet main pipe (2), an inlet branch pipe (3), an outlet main pipe (7), an outlet branch pipe (6) and a plurality of dehumidification devices (4). One end of each of the plurality of dehumidification devices (4) is respectively connected to the inlet branch pipe (3), and the other end is respectively connected to the outlet branch pipe (6). One end of each of the plurality of inlet branch pipes (3) away from the dehumidification device (4) is connected to one end of the inlet main pipe (2), and the other end of each of the inlet main pipe (2) is connected to the main circuit air box (1). One end of each of the plurality of outlet branch pipes (6) away from the dehumidification device (4) is connected to one end of the outlet main pipe (7), and the other end of each of the outlet main pipe (7) is connected to the main circuit air box (1). A ventilation pipe (5) is also provided at the top of the dehumidification device (4). Valves are provided on the inlet branch pipe (3), the inlet main pipe (2), the outlet main pipe (7), the outlet branch pipe (6) and the ventilation pipe (5).

4. The ring main unit housing for a box-type transformer according to claim 3, characterized in that: The dehumidification device (4) comprises a dehumidification device housing, the interior of the dehumidification device housing being divided into a dehumidification chamber (4.1) and a heating chamber (4.4) by a partition (4.3), a desiccant (4.2) and a humidity sensor being provided in the dehumidification chamber (4.1), an electric heater and a temperature sensor being provided in the heating chamber (4.4), and a plurality of through holes being provided on the partition (4.3).

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