Environment-friendly gas insulation structure ring main unit with self-healing capability

Abstract

The utility model discloses an environment-friendly gas insulation structure ring main unit with self-healing capability. The environment-friendly gas insulation structure ring main unit is characterized by comprising a cabinet body and a controller arranged in the cabinet body, the system is characterized by comprising a plurality of looped network power supply lines arranged in a looped network cabinet, each looped network power supply line is provided with a plurality of section switches and open-loop point switches which are in communication connection with a controller, and the system further comprises a plurality of interconnection switches connected with the adjacent looped network power supply lines; the cabinet body comprises an outer shell, an inner shell arranged in the outer shell and a drying device which is installed on the outer shell and used for drying gas entering the cabinet body so that the gas entering the cabinet body can effectively play an insulation role. According to the utility model, through the arrangement of the drying device, the gas entering the cabinet body is dried, the dry gas is ensured to enter the cabinet body to play a role in gas insulation, and faults caused by corrosion and short circuit of components in the cabinet body due to moisture when the gas containing the moisture enters the cabinet body and cannot play a role in insulation are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to ring main unit, concretely refers to a kind of self-healing ability environmental protection gas insulation structure ring main unit. BACKGROUND

[0002] With the continuous improvement of people's quality of life and the continuous improvement of the demand for power supply reliability, intelligent power grid has been developed rapidly;Intelligent distribution network directly faces users and has complex structure, and the failure rate is high, which is the main link affecting power supply reliability;In order to fully exert the advantages of intelligent distribution network and improve power supply reliability, it is urgent to upgrade the distribution network equipment;Ring main unit is the key equipment of distribution network, and its performance directly affects the power supply reliability of distribution network;In order to meet the demand of intelligent distribution network, intelligent ring main unit emerges as the times require, but the existing ring main unit does not fully utilize the high power supply capacity network frame advantage of intelligent distribution network, cannot realize rapid fault positioning and fault recovery, and cannot meet the rapid self-healing requirement of intelligent distribution network.

[0003] And the ring main unit in the prior art is usually arranged outdoors, and SF6 is mainly used as insulation gas in the existing ring main unit, but SF6 is a greenhouse gas, which has great influence on the environment when discharged, so at present, many dry gases at normal pressure are used to play the role of insulation;But in humid weather, it is inevitable that moisture enters the ring main unit, and if the humidity in the ring main unit is too large, it may cause the secondary components in the ring main unit to rust and short circuit, thereby causing failure, and the dehumidification in the ring main unit is particularly important. Therefore, a kind of self-healing ability environmental protection gas insulation structure ring main unit is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving above problem and provides a kind of self-healing ability environmental protection gas insulation structure ring main unit.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme a kind of self-healing ability environmental protection gas insulation structure ring main unit, including cabinet and the controller placed in cabinet;Its characteristics are including the ring network power supply line of being arranged in ring main unit, the ring network power supply line is provided with a plurality of sectional switches and open loop point switches connected with controller communication, and further include a plurality of tie-in switches connecting adjacent ring network power supply line;

[0006] The cabinet body comprises an outer shell, an inner shell arranged in the outer shell, and a drying device arranged on the outer shell for drying the gas entering the cabinet body so that the gas can effectively play an insulating role; the cabinet body is formed with an air inlet cavity for heat dissipation of the gas entering the inner shell through the arrangement of the outer shell and the inner shell; the inner shell is provided with an air inlet communicated with the air inlet cavity; the drying device comprises a casing arranged on the outer shell, a fan arranged on the casing, a filter cavity arranged in the casing outside the fan, a drying cavity arranged in the casing inside the fan and communicated with the air inlet cavity, a humidity sensor arranged in the casing and the inner shell for detecting the humidity of the air, and a temperature sensor arranged in the inner shell for detecting the temperature in the inner shell; the filter cavity is provided with a filter core for filtering impurities in the gas, and the drying cavity is provided with a drying machine for adsorbing moisture in the air.

[0007] Further preferably, a heating cavity arranged between the filter layer and the fan in the casing and a heater arranged in the heating cavity for heating the air are further included.

[0008] Further preferably, a baffle arranged on the outermost layer of the casing is further included, and the casing is provided with a driver for driving the baffle to act.

[0009] Further preferably, the heater is an electric heating coil.

[0010] Further preferably, limit plates are arranged on both sides of the filter cavity and the drying cavity, and the limit plates are provided with a plurality of through holes for ventilation.

[0011] Further preferably, detachable cover plates and bottom plates arranged above and below the casing are further included.

[0012] Further preferably, an exhaust casing arranged on the outer shell and an exhaust fan arranged in the exhaust casing are further included, the exhaust casing is provided with an exhaust passage passing through the air inlet cavity and connected with the inner shell; the exhaust casing is also provided with a driver connected with the baffle.

[0013] The utility model discloses the beneficial effects of:

[0014] Through the arrangement of the controller, the plurality of ring net power supply lines arranged in the ring net cabinet, the plurality of sectional switches and open loop point switches communicated with the controller and arranged on the ring net power supply lines and the plurality of tie-in switches connected with the adjacent ring net power supply lines, when the power supply line appears the fault, the fault point is automatically isolated, and the line is automatically switched to realize self-healing;

[0015] The gas entering the cabinet is dried by the drying device, so that the dry gas enters the cabinet to play a role of gas insulation, and the gas containing moisture cannot enter the cabinet to play a role of insulation, and the moisture cannot cause the components in the cabinet to rust and short circuit to cause a fault.

[0016] The cabinet is provided as a double-shell structure of an outer shell and an inner shell, and an air inlet cavity is formed in the outer shell and the inner shell, so that the gas dried by the drying device flows in the air inlet cavity before entering the inner shell, and is cooled by heat exchange with the outer shell in the flowing process, so that the hot air after heating does not enter the inner shell to affect the components in the inner shell, and the slightly hot air after heat exchange and cooling can dehumidify the inner shell itself after entering the inner shell, so that the cabinet is kept in a dry state. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the utility model;

[0018] Figure 2 is a partial sectional structure schematic diagram of the utility model;

[0019] Figure 3 is a partial sectional structure schematic diagram of the drying device in the utility model;

[0020] Figure 4 is another perspective structural schematic diagram of the utility model;

[0021] Figure 5 is an electrical network structure schematic diagram in the utility model.

[0022] Legend: 1, cabinet; 11, outer shell; 12, inner shell; 13, air inlet cavity; 14, air inlet; 2, drying device; 21, cabinet; 22, fan; 23, filter cavity; 24, drying cavity; 3, heating cavity; 31, heater; 4, baffle; 41, driver; 5, limiting plate; 51, through hole; 6, cover plate; 61, bottom plate; 7, exhaust shell; 71, exhaust fan; 72, exhaust passage. DETAILED DESCRIPTION

[0023] Now we will make further description of the environmental protection gas insulation structure ring network cabinet with self-recovery ability according to the utility model in combination with the drawings.

[0024] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications also change accordingly.

[0025] In the utility model, unless another definite provision and limitation, the terms "connect", "fix" and the like should be understood broadly;For example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or the interaction of two elements inside two elements, unless another definite limitation.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Referring to Figures 1-5 The utility model provides a kind of self-recovery ability environmental protection gas insulation structure ring network cabinet, including cabinet 1 and the controller placed in cabinet 1;Its characterized in that including cabinet 1 and the controller placed in cabinet 1;Its characterized in that including being arranged in ring network cabinet several ring network power supply lines, the ring network power supply line of described is arranged with several sectional switches and open loop point switches and is communicated with the controller, still include the several tie-in switches of connecting adjacent ring network power supply line;

[0027] Mesh power grid is formed by connecting several tie-in switches between several adjacent ring network power supply circuits;The sectional switch and open loop point switch on each ring network power supply line form a line domain;Several tie-in switches connecting same two ring network power supply lines form a tie-in domain;

[0028] Each sectional switch, open loop point switch and adjacent tie-in domain tie-in switch communicate in real time in use;

[0029] 6 power sources are provided in the mesh power grid in the application, and are set as A1-A6;9 sectional switches are provided on each ring network power supply circuit, and there are 3 ring network power supply circuits, and are set as B1-B27;One open loop point switch is provided on each ring network power supply circuit, and there are 3 ring network power supply circuits, and are set as C1-C3;4 tie-in switches are provided between adjacent ring network power supply circuits, and there are 8, and are set as D1-D8;

[0030] When fault occurs and self-recovery, current is transmitted from B1 to B4 and B9 to B5, and the fault point is set to appear between B3 and B4, B1, B2, B3 detect the fault current data, B4, B5, B6, B7, B8, B9 do not detect the fault current data;B3 and B4 are communicated, and the detection data of each other is acquired, and information is fed back to the controller, and the controller locates the fault point, and then the controller controls B3, B4 isolation point and controls ring point switch C1 to switch to closed state, thereby completing self-recovery;

[0031] The cabinet 1 includes an outer shell 11, an inner shell 12 placed inside the outer shell 11, and a drying device 2 installed on the outer shell 11 for drying the gas entering the cabinet 1 so that the gas entering the cabinet 1 can effectively play an insulating role. The cabinet 1 forms an air inlet cavity 13 for dissipating heat from the gas entering the inner shell 12 through the arrangement of the outer shell 11 and the inner shell 12. The inner shell 12 is provided with an air inlet 14 communicating with the air inlet cavity 13. The drying device 2 includes a housing 21 installed on the outer shell 11, a fan 22 installed on the housing 21, a filter cavity 23 located outside the fan 22 inside the housing 21, a drying cavity 24 located inside the fan 22 and communicating with the air inlet cavity 13, a humidity sensor installed inside the housing 21 and the inner shell 12 for detecting air humidity, and a temperature sensor installed inside the inner shell 12 for detecting the temperature inside the inner shell 12. The filter cavity 23 contains a filter element for filtering impurities in the gas, and the drying cavity 24 contains a dryer for adsorbing moisture in the air.

[0032] By setting up the drying device 2, the gas entering the cabinet 1 is dried to ensure that the dried gas enters the cabinet 1 and plays a role in gas insulation. This avoids the situation where the gas containing moisture enters the cabinet 1 and fails to play a role in insulation, while the moisture causes the components inside the cabinet 1 to rust, short circuit, and cause malfunctions.

[0033] By setting the cabinet 1 as a double-shell structure of outer shell 11 and inner shell 12, and forming an air inlet cavity 13 in both outer shell 11 and inner shell 12, the gas dried by the drying device 2 flows in the air inlet cavity 13 before flowing into the inner shell 12. During the flow, the gas is cooled by heat exchange through contact with the outer shell 11, which prevents the overheated hot air from entering the inner shell 12 and affecting the components inside the inner shell 12. At the same time, the slightly hot air that has been cooled by heat exchange enters the inner shell 12 without affecting the components, and can also dehumidify the inner shell 12 itself, ensuring that the cabinet is in a dry state.

[0034] The filter chamber 23 and the filter element inside the filter chamber 23 are used to filter the gas entering the cabinet 1, so as to prevent impurities such as particulate matter in the air from entering the cabinet 1 and causing dust accumulation inside the cabinet 1 and on the components.

[0035] The drying chamber 24 and the dryer inside the drying chamber 24 are used to adsorb the moisture in the heated air, ensuring that the dried gas enters the cabinet 1.

[0036] The humidity and temperature sensors inside the inner shell 12 are used to monitor the humidity and temperature inside the cabinet 1.

[0037] In one embodiment, further comprising a heating cavity 3 arranged between the filter layer and the fan 22 in the casing 21, and a heater 31 arranged in the heating cavity 3 for heating air; the heater 31 is an electric heating coil;

[0038] By arranging the heater 31, the air is heated by the heater 31 before entering, and becomes hot air after heat exchange. The hot air is adsorbed by the dryer to remove moisture in the air. The dryer after adsorbing moisture enters the air inlet cavity 13 and exchanges heat with the outer shell 11 to be cooled and cooled. The slightly hot air after cooling enters the inner shell 12 through the air inlet 14.

[0039] In one embodiment, further comprising a baffle 4 arranged on the outermost layer of the casing 21, and a driver 41 arranged on the casing 21 for driving the baffle 4 to move;

[0040] Further comprising an exhaust casing 7 arranged on the outer shell 11 and an exhaust fan 71 arranged in the exhaust casing 7, wherein the exhaust casing 7 is provided with an exhaust passage 72 connected with the inner shell 12 through the air inlet cavity; the exhaust casing 7 is also provided with the driver 41 connected with the baffle 4;

[0041] The driver 41 can be an electric push rod, an air cylinder or a hydraulic cylinder;

[0042] By arranging the driver 41 and the baffle 4 on the casing 21 and the exhaust casing 7, the driver 41 drives the baffle 4 to block the casing 21 and the exhaust casing 7 when air exchange is not performed, so that the entire cabinet is in a fully closed state.

[0043] The exhaust casing 7 and the exhaust fan 71 are arranged to exhaust the gas in the cabinet and play a role in dehumidifying and cooling.

[0044] In one embodiment, the filter cavity 23 and the drying cavity 24 are provided with limit plates 5 on both sides, and the limit plates 5 are provided with a plurality of through holes 51 for ventilation. The limit plates 5 are arranged to limit the filter element and the dryer filled in the filter cavity 23 and the drying cavity 24, and the plurality of through holes 51 are arranged to allow the gas to pass through.

[0045] In one embodiment, further comprising a detachable cover plate 6 and a bottom plate 61 arranged above and below the casing 21; the cover plate 6 and the bottom plate 61 are arranged on the casing 21 by screws, and can be removed for replacement and maintenance when the filter element, the dryer or the like are replaced or maintained.

[0046] In use, the utility model discloses:

[0047] In the application, ordinary air is used to replace SF6 pressure gas insulation, and zero greenhouse gas emission is realized.

[0048] When the cabinet 1 needs to be ventilated and cooled, the controller controls the driver 41 to start, and the driver 41 drives the baffle 4 to act, and the machine shell 21 and the exhaust shell 7 are opened; at this time, the humidity of the outside air is detected by the humidity sensor, and if the humidity exceeds the standard, the heater 31 is started, and then the fan 22 and the exhaust fan are started, the fan 22 inhales the outside air into the machine shell 21, the entering air is filtered by the filter element first, and then the hot air after heat exchange with the heater 31 enters the air inlet cavity 13 after the moisture is absorbed by the drying agent, the air in the air inlet cavity 13 is cooled by heat exchange with the shell 11, the slightly hot air after heat exchange enters the inner shell 12 through the air inlet 14, the slightly hot air in the inner shell 12 dehumidifies the inner shell 12, and the exhaust fan exhausts the air in the inner shell 12, until the humidity and temperature in the cabinet 1 reach the set requirements, the controller controls the fan 22 and the exhaust fan to stop working, and the controller controls the driver 41 to drive the baffle 4 to act, and the machine shell 21 and the exhaust shell 7 are closed.

[0049] In the use process, the temperature sensor is used to monitor the temperature in the cabinet 1 in real time, if the temperature in the cabinet 1 increases when ventilating, it indicates that the temperature of the air entering the cabinet 1 is too high, at this time, the controller is used for controlling the temperature of the heater 31 to be reduced, so that the overheated air is prevented from entering the cabinet 1 and causing the temperature in the cabinet 1 to be too high, and the heat dissipation of the cabinet 1 is prevented from being affected.

[0050] The protection scope of the utility model is not limited to the above embodiments and their transformations. The routine modification and replacement of the skilled in the art based on the content of the embodiments all belong to the protection scope of the utility model.

Claims

1. An environmentally friendly gas insulated structure ring main unit with self-healing capability, comprising a cabinet (1) and a controller placed in the cabinet (1); characterized in that The application relates to a ring network cabinet, which comprises a plurality of ring network power supply lines arranged in the ring network cabinet, a plurality of sectional switches and open-loop point switches arranged on the ring network power supply lines and connected with a controller, and a plurality of tie switches connecting adjacent ring network power supply lines. The cabinet body (1) comprises an outer shell (11), an inner shell (12) arranged in the outer shell (11), and a drying device (2) arranged on the outer shell (11) and used for drying the gas entering the cabinet body (1) so that the gas can effectively play an insulating role; the cabinet body (1) is formed with an air inlet cavity (13) for heat dissipation of the gas entering the inner shell (12) through arrangement of the outer shell (11) and the inner shell (12); the inner shell (12) is provided with an air inlet (14) in communication with the air inlet cavity (13); the drying device (2) comprises a machine shell (21) arranged on the outer shell (11), a fan (22) arranged on the machine shell (21), a filter cavity (23) arranged in the machine shell (21) and outside the fan (22), a drying cavity (24) arranged inside the fan (22) and in communication with the air inlet cavity (13), a humidity sensor arranged in the machine shell (21) and the inner shell (12) and used for detecting the humidity of the air, and a temperature sensor arranged in the inner shell (12) and used for detecting the temperature in the inner shell (12); the filter cavity (23) is provided with a filter core used for filtering impurities in the gas, and the drying cavity (24) is provided with a drying machine used for adsorbing the moisture in the air.

2. The environmentally friendly gas insulated structure ring main unit with self-healing capability according to claim 1, characterized in that: The machine shell (21) is further provided with a heating cavity (3) arranged between the filter layer and the fan (22), and a heater (31) arranged in the heating cavity (3) and used for heating the air.

3. The environmentally friendly gas insulated ring main unit with self-healing capability according to claim 2, characterized in that: The machine shell (21) is further provided with a baffle (4) arranged on the outermost layer of the machine shell (21), and the machine shell (21) is provided with a driver (41) used for driving the baffle (4) to move.

4. The environmentally friendly gas insulated ring main unit with self-healing capability according to claim 2, characterized in that: The heater (31) is an electric heating coil.

5. The environmentally friendly gas insulated ring main unit with self-healing capability according to claim 1, characterized in that: The filter cavity (23) and the drying cavity (24) are provided with limiting plates (5) on two sides, and the limiting plates (5) are provided with a plurality of through holes (51) used for ventilation.

6. The environmentally friendly gas insulated ring main unit with self-healing capability according to claim 1, characterized in that: The machine shell (21) is further provided with a detachable cover plate (6) arranged above the machine shell (21) and a detachable bottom plate (61) arranged below the machine shell (21).

7. The environmentally friendly gas insulated ring main unit with self-healing capability according to claim 1, characterized in that: The outer shell (11) is further provided with an exhaust shell (7) and an exhaust fan (71) arranged in the exhaust shell (7); the exhaust shell (7) is provided with an exhaust passage (72) penetrating the air inlet cavity and connected with the inner shell (12); the exhaust shell (7) is also provided with the driver (41), and the driver (41) is connected with the baffle (4).

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