Ring main unit capable of preventing gas leakage

Abstract

The utility model relates to the technical field of ring main units, and discloses a ring main unit capable of preventing gas leakage, which comprises a cabinet body, a cabinet door and a handle, the two sides of the lower part of the cabinet body are connected with the cabinet door through a first rotating shaft, the outer wall of the cabinet door is provided with the handle, the two sides of the interior of the cabinet body are provided with inflation bins, and the inflation bins are connected with the cabinet door through a second rotating shaft. A sulfur hexafluoride sensor is installed on one side of the inner wall of the inflation bin, a second sealing strip is arranged on the inner side of the cabinet door, a first sealing strip is arranged on the outer side of the second sealing strip and installed on the inner side of the cabinet body, an air inlet structure is installed above the inflation bin, a plate body is installed above the air inlet structure, and a gas outlet structure is installed above the plate body. An exhaust structure is mounted above the plate body; according to the device, sulfur hexafluoride gas is quickly discharged into the gas charging bin, so that the working efficiency of the device is improved, the condition that the sulfur hexafluoride gas is remained in the gas inlet structure is reduced, and the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ring network cabinets, and in particular to a ring network cabinet for preventing gas leakage. Background Art

[0002] Ring Main Unit is a group of electrical equipment (high voltage switchgear) installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring network power supply unit. Its core part adopts load switches and fuses. It has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, factories and enterprises.

[0003] After searching, the Chinese patent authorization announcement number CN 215221541 U, the announcement date December 17, 2021, discloses a ring main unit that prevents gas leakage. The article proposes "a cabinet 1, a concentration meter 4, a groove 5, a cover 6 and an alarm light 7 are provided on the cabinet 1, and a gas filling chamber 101, a first equipment cavity 102 and a second equipment cavity 103 are provided inside the cabinet 1." The sulfur hexafluoride gas is discharged into the gas filling chamber at a slow speed, which affects the efficiency of the device, and when the sulfur hexafluoride gas is discharged, a small amount of sulfur hexafluoride gas will remain inside the air duct, which may easily cause the sulfur hexafluoride gas remaining in the air duct to leak into the air through the gas filling chamber after the first cabinet door is opened, resulting in a poisoning incident. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was caused. Utility Model Content

[0004] The purpose of the present invention is to provide a gas leakage-proof ring main unit to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a ring network cabinet for preventing gas leakage, comprising a cabinet body, a cabinet door and a handle, wherein the two sides of the lower side of the cabinet body are connected to the cabinet door through a first rotating shaft, the outer wall of the cabinet door is provided with a handle, the two sides of the inner side of the cabinet body are provided with a gas filling chamber, a sulfur hexafluoride sensor is installed on one side of the inner wall of the gas filling chamber, a second sealing strip is provided on the inner side of the cabinet door, a first sealing strip is provided on the outer side of the second sealing strip, the first sealing strip is installed on the inner side of the cabinet body, an air intake structure is installed above the gas filling chamber, a plate body is installed above the air intake structure, and an exhaust structure is installed above the plate body;

[0006] The air intake structure includes a first air outlet, a rubber block and a second air outlet, the first air outlet is installed above the charging bin, a rubber block is provided on the inner side of the first air outlet, the second air outlet is installed inside the rubber block, and the second air outlet is installed on both sides below the first storage box, a fixing block is provided inside the first storage box, a plurality of fan blades are provided on the outer side of the fixing block, a connecting block is installed above the fixing block, the upper part of the connecting block passes through the second storage box and is connected to the motor, the motor is arranged inside the second storage box, support rods are installed on both sides of the second storage box, the outer side of the support rods is connected to the inner wall of the first storage box, an air outlet pipe is installed above the first storage box, an air charging port is installed on the left side of the air outlet pipe, a fixing groove is provided on the outer side of the air charging port, the fixing groove is arranged on the left side of the outer wall of the cabinet, a fixing cover is provided on the inner side of the fixing groove, the fixing cover is connected to the cabinet body through a second rotating shaft, and the lower side of the fixing cover is connected to the cabinet body through a cabinet door telescopic buckle.

[0007] Preferably, the air filling chamber and the first sealing strip are tightly fitted, and the cabinet door and the second sealing strip are tightly fitted.

[0008] Preferably, the first sealing strip and the second sealing strip are arranged correspondingly, and the cabinet and the inflation bin are arranged in an integrated manner.

[0009] Preferably, the first air outlets on both sides are in a V-shape, and the first air outlets and the rubber block are tightly fitted.

[0010] Preferably, the first air outlet and the second air outlet are arranged correspondingly, and the second air outlet and the first storage box are fixedly connected.

[0011] Preferably, the fixing blocks are fixedly connected to the fan blades and the connecting blocks, and the interior of the first storage box is communicated with the interior of the air outlet pipe and the interior of the first air outlet.

[0012] Preferably, the connection block is drive-connected to the motor, and the motor is fixedly connected to the second storage box.

[0013] Preferably, the support rods are fixedly connected to the inner walls of the second storage box and the first storage box, and the fixed cover is rotatably connected to the second rotating shaft.

[0014] Preferably, the exhaust structure includes an exhaust port, a first exhaust pipe and a second exhaust pipe. An exhaust port is provided on the outer side of the first exhaust port, and the exhaust port is provided above the inflation bin. A first exhaust pipe is installed between the exhaust ports on both sides, and a second exhaust pipe is installed above the first exhaust pipe. The second exhaust pipe passes through the plate body above and is connected to the exhaust fan, and a first electrically-controlled valve is installed on the outer wall of the second exhaust pipe.

[0015] Preferably, the interior of the first exhaust pipe is communicated with the interior of the exhaust port and the interior of the first electrically controlled valve, and the exhaust port and the first exhaust pipe are perpendicular to each other.

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

[0017] By setting a first air outlet, a rubber block and a second air outlet, the fixed cover is pressed through the action of the cabinet door telescopic buckle, and the fixed cover rotates on the outer wall of the second rotating shaft, and sulfur hexafluoride gas is added to the inside of the air outlet pipe through the inflation port, and from the inside of the air outlet pipe through the first storage box to the inside of the first air outlet, and then from the first air outlet to the inside of the inflation bin, so that the equipment inside the two inflation bins has certain insulation and arc extinguishing properties, and at the same time, the motor is started to drive the connecting block to rotate, and the connecting block drives the fan blades connected to the fixed block to rotate, so that the sulfur hexafluoride gas inside the air intake structure is quickly discharged into the interior of the inflation bin, thereby improving the working efficiency of the device, and reducing the situation where there is residual sulfur hexafluoride gas inside the air intake structure, preventing the residual sulfur hexafluoride gas inside the air intake structure from entering the interior of the inflation bin after the cabinet door is opened, and then being discharged into the air through the inflation bin, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 3 This is a rear cross-sectional structural schematic diagram of the utility model;

[0022] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. cabinet body; 2. cabinet door; 3. handle; 4. first sealing strip; 5. second sealing strip; 6. sulfur hexafluoride sensor; 7. exhaust structure; 8. plate body; 9. air intake structure; 701. exhaust port; 702. first exhaust pipe; 703. second exhaust pipe; 704. first electric control valve; 705. exhaust fan; 901. first air outlet; 902. rubber block; 903. second air outlet; 904. first storage box; 905. fixing block; 906. fan blade; 907. connecting block; 908. motor; 909. second storage box; 910. support rod; 911. air outlet pipe; 912. charging port; 913. fixing groove; 914. fixing cover; 915. second rotating shaft; 916. cabinet door telescopic buckle. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The following will be combined with the drawings in the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the embodiment of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical embodiment.

[0027] See also Figure 1-4The utility model provides a technical scheme of a ring main unit for preventing gas leakage: a ring main unit for preventing gas leakage, comprising a cabinet 1, a cabinet door 2 and a handle 3, the two sides of the lower side of the cabinet 1 are connected to the cabinet door 2 through a first rotating shaft, the outer wall of the cabinet door 2 is provided with a handle 3, the cabinet 1 is provided with an air filling chamber on both sides, a sulfur hexafluoride sensor 6 is installed on one side of the inner wall of the air filling chamber, a second sealing strip 5 is provided on the inner side of the cabinet door 2, a first sealing strip 4 is provided on the outer side of the second sealing strip 5, the first sealing strip 4 is installed on the inner side of the cabinet 1, an air intake structure 9 is installed above the air filling chamber, a plate body 8 is installed above the air intake structure 9, and an exhaust structure 7 is installed above the plate body 8;

[0028] The air intake structure 9 includes a first air outlet 901, a rubber block 902, and a second air outlet 903. The first air outlet 901 is installed above the air filling chamber, and a rubber block 902 is provided inside the first air outlet 901. The second air outlet 903 is installed inside the rubber block 902. The second air outlet 903 is installed on both sides below the first storage box 904. A fixing block 905 is provided inside the first storage box 904. A plurality of fan blades 906 are provided outside the fixing block 905. A connecting block 907 is installed above the fixing block 905. The upper part of the connecting block 907 passes through the second storage box 909 and is connected to the motor 908. The motor 9 08 is arranged inside the second storage box 909, support rods 910 are installed on both sides of the second storage box 909, the outer sides of the support rods 910 are connected to the inner wall of the first storage box 904, an air outlet pipe 911 is installed above the first storage box 904, an air filling port 912 is installed on the left side of the air outlet pipe 911, a fixing groove 913 is provided on the outer side of the air filling port 912, the fixing groove 913 is arranged on the left side of the outer wall of the cabinet 1, a fixing cover 914 is provided on the inner side of the fixing groove 913, the fixing cover 914 is connected to the cabinet 1 through a second rotating shaft 915, and the bottom of the fixing cover 914 is connected to the cabinet 1 through a cabinet door telescopic buckle 916.

[0029] When in use, the fixed cover 914 is pressed and the cabinet door telescopic buckle 916 is used to rotate the fixed cover 914 on the outer wall of the second rotating shaft 915, and the sulfur hexafluoride gas is added to the inside of the outlet pipe 911 through the inflation port 912, and then from the inside of the outlet pipe 911 through the first storage box 904 to the inside of the first outlet 901, and then from the first outlet 901 to the inside of the inflation bin, so that the equipment inside the two inflation bins has certain insulation and arc extinguishing properties, and at the same time, the motor 908 is started to drive the connecting block 907 to rotate, and the connecting block 907 drives the fan blade 906 connected to the fixed block 905 to rotate, so that the sulfur hexafluoride gas inside the air intake structure 9 is quickly discharged to the inside of the inflation bin, thereby improving the working efficiency of the device, reducing the situation where there is sulfur hexafluoride gas residual inside the air intake structure 9, preventing the residual sulfur hexafluoride gas inside the air intake structure 9 from entering the interior of the inflation bin after the cabinet door 2 is opened, and being discharged into the air through the inflation bin, thereby improving the safety of the device.

[0030] The air filling chamber and the first sealing strip 4 are tightly fitted, and the cabinet door 2 and the second sealing strip 5 are tightly fitted, so that the sealing of the air filling chamber is better.

[0031] The first sealing strip 4 and the second sealing strip 5 are arranged correspondingly, and the cabinet 1 and the air charging chamber are arranged in an integrated manner.

[0032] The first air outlets 901 on both sides are in a V-shape, and the first air outlets 901 and the rubber block 902 are tightly fitted.

[0033] The first air outlet 901 and the second air outlet 903 are arranged correspondingly, and the second air outlet 903 and the first storage box 904 are fixedly connected.

[0034] The fixing blocks 905 are fixedly connected to the fan blades 906 and the connecting blocks 907 , and the interior of the first storage box 904 is communicated with the interior of the air outlet pipe 911 and the interior of the first air outlet 901 .

[0035] The connection block 907 and the motor 908 are connected in a driving manner, and the motor 908 and the second storage box 909 are connected in a fixed manner.

[0036] The support rods 910 are fixedly connected to the inner walls of the second storage box 909 and the first storage box 904 , and the fixed cover 914 is rotatably connected to the second rotating shaft 915 .

[0037] The exhaust structure 7 includes an exhaust port 701, a first exhaust pipe 702 and a second exhaust pipe 703. The exhaust port 701 is provided on the outer side of the first air outlet 901, and the exhaust port 701 is provided above the inflation bin. The first exhaust pipe 702 is installed between the exhaust ports 701 on both sides, and the second exhaust pipe 703 is installed above the first exhaust pipe 702. The second exhaust pipe 703 passes through the plate body 8 above and is connected to the exhaust fan 705. The outer wall of the second exhaust pipe 703 is installed with a first electrically controlled valve 704.

[0038] The interior of the first exhaust pipe 702 is connected to the interior of the exhaust port 701 and the interior of the first electrically controlled valve 704 , and the exhaust port 701 and the first exhaust pipe 702 are perpendicular to each other.

[0039] When the user holds the handle 3 to open the cabinet door 2, the exhaust fan 705 is started to draw the sulfur hexafluoride gas inside the gas chamber through the exhaust port 701, the first exhaust pipe 702 and the second exhaust pipe 703 to the inside of the exhaust fan 705, and the sulfur hexafluoride gas inside the gas chamber is detected by the sulfur hexafluoride sensor 6. When the gas concentration meets the safety execution standard, the alarm light above the cabinet 1 flashes, the first electric control valve 704 is closed, and the cabinet door 2 can be opened.

[0040] Working principle:

[0041] When using it for the first time, start the air intake structure 9 to quickly discharge the sulfur hexafluoride gas into the interior of the gas filling bin. Before opening the cabinet door 2, start the exhaust structure 7, which collects the sulfur hexafluoride gas inside the gas filling bin and detects the sulfur hexafluoride gas inside the gas filling bin through the sulfur hexafluoride sensor 6. When the gas concentration meets the safety execution standard, the alarm light above the cabinet 1 flashes, the exhaust structure 7 is closed, and the cabinet door 2 can be opened.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ring main unit for preventing gas leakage, comprising a cabinet body (1), a cabinet door (2) and a handle (3), characterized in that: The two sides of the lower side of the cabinet (1) are connected to the cabinet door (2) via a first rotating shaft, the outer wall of the cabinet door (2) is provided with a handle (3), the two sides of the interior of the cabinet (1) are provided with an air filling chamber, one side of the inner wall of the air filling chamber is provided with a sulfur hexafluoride sensor (6), the inner side of the cabinet door (2) is provided with a second sealing strip (5), the outer side of the second sealing strip (5) is provided with a first sealing strip (4), the first sealing strip (4) is installed on the inner side of the cabinet (1), an air intake structure (9) is installed above the air filling chamber, a plate body (8) is installed above the air intake structure (9), and an exhaust structure (7) is installed above the plate body (8); The air intake structure (9) comprises a first air outlet (901), a rubber block (902) and a second air outlet (903); the first air outlet (901) is installed above the air filling chamber; a rubber block (902) is provided inside the first air outlet (901); a second air outlet (903) is installed inside the rubber block (902); the second air outlet (903) is installed on both sides below the first storage box (904); a fixing block (905) is provided inside the first storage box (904); a plurality of fan blades (906) are provided outside the fixing block (905); a connecting block (907) is installed above the fixing block (905); the connecting block (907) passes through the second storage box (909) and is connected to the motor (908); the motor (908) 08) is arranged inside the second storage box (909), support rods (910) are installed on both sides of the second storage box (909), the outer sides of the support rods (910) are connected to the inner wall of the first storage box (904), an air outlet pipe (911) is installed above the first storage box (904), an air charging port (912) is installed on the left side of the air outlet pipe (911), a fixing groove (913) is provided on the outer side of the air charging port (912), the fixing groove (913) is arranged on the left side of the outer wall of the cabinet body (1), a fixing cover (914) is provided on the inner side of the fixing groove (913), the fixing cover (914) is connected to the cabinet body (1) through a second rotating shaft (915), and the bottom of the fixing cover (914) is connected to the cabinet body (1) through a cabinet door telescopic buckle (916).

2. The gas leakage-proof ring main unit according to claim 1, characterized in that: The inflatable chamber and the first sealing strip (4) are tightly fitted, and the cabinet door (2) and the second sealing strip (5) are tightly fitted.

3. The gas leakage-proof ring main unit according to claim 2, characterized in that: The first sealing strip (4) and the second sealing strip (5) are arranged correspondingly, and the cabinet (1) and the inflation bin are arranged in an integrated manner.

4. The gas leakage-proof ring main unit according to claim 3, characterized in that: The first air outlets (901) on both sides are in a V-shape, and the first air outlet (901) and the rubber block (902) are tightly fitted.

5. The gas leakage-proof ring main unit according to claim 4, characterized in that: The first air outlet (901) and the second air outlet (903) are arranged correspondingly, and the second air outlet (903) and the first storage box (904) are fixedly connected.

6. The gas leakage-proof ring main unit according to claim 5, characterized in that: The fixing blocks (905) are fixedly connected to the fan blades (906) and the connecting blocks (907), and the interior of the first storage box (904) is communicated with the interior of the air outlet pipe (911) and the interior of the first air outlet (901).

7. The gas leakage-proof ring main unit according to claim 6, characterized in that: The connection block (907) and the motor (908) are connected in a driving manner, and the motor (908) and the second storage box (909) are fixedly connected.

8. The gas leakage-proof ring main unit according to claim 7, characterized in that: The support rods (910) are fixedly connected to the inner walls of the second storage box (909) and the first storage box (904), and the fixed cover (914) is rotatably connected to the second rotating shaft (915).

9. The gas leakage-proof ring main unit according to claim 8, characterized in that: The exhaust structure (7) comprises an exhaust port (701), a first exhaust pipe (702) and a second exhaust pipe (703); an exhaust port (701) is provided on the outer side of the first air outlet (901); the exhaust port (701) is provided above the inflation chamber; a first exhaust pipe (702) is installed between the exhaust ports (701) on both sides; a second exhaust pipe (703) is installed above the first exhaust pipe (702); the upper part of the second exhaust pipe (703) passes through the plate body (8) and is connected to the exhaust fan (705); a first electrically controlled valve (704) is installed on the outer wall of the second exhaust pipe (703).

10. The gas leakage-proof ring main unit according to claim 9, characterized in that: The interior of the first exhaust pipe (702) is communicated with the interior of the exhaust port (701) and the interior of the first electrically controlled valve (704), and the exhaust port (701) and the first exhaust pipe (702) are arranged perpendicular to each other.

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