CN218569676U - A pressure relief device for a ring network cabinet - Google Patents

Abstract

The utility model discloses a pressure relief device for looped netowrk cabinet, including setting up the pressure relief device body on looped netowrk cabinet, the pressure relief device body is including seting up the pressure release hole on the inner wall of looped netowrk cabinet left side, and the pressure release hole is used for the pressure release operation, rotate between the front side inner wall of looped netowrk cabinet and the rear side inner wall install with pressure release hole matched with elasticity shutoff mechanism, elasticity shutoff mechanism is used for carrying out the shutoff to the pressure release hole, and the left side movable contact of elasticity shutoff mechanism has the squeeze roll, and the bottom fixedly connected with slope of squeeze roll sets up the stripper bar, and stripper bar and squeeze roll cooperate, can extrude the removal to the shutoff in pressure release hole to elasticity shutoff mechanism, and the left side of looped netowrk cabinet is rotated and is installed the pivot. The utility model discloses be convenient for in time release in the automation when looped netowrk cabinet internal pressure is great, reduce because of the great explosion risk that causes of pressure, reduce the potential safety hazard, and be convenient for in time carry out the shutoff, convenient next use to looped netowrk cabinet automatically after the pressure release is accomplished.

Description

A pressure relief device for a ring network cabinet

technical field

The utility model relates to the technical field of pressure relief equipment, in particular to a pressure relief device for a ring network cabinet.

Background technique

The ring network cabinet is a group of transmission and distribution electrical equipment, which is installed in a metal or non-metal insulated cabinet or made into an assembled interval ring network power supply unit. With the development of the power system, the application occasions of the ring network cabinet are becoming more and more It is widely used in distribution stations and box-type substations of load centers such as urban residential quarters, high-rise buildings, large public buildings, factories and enterprises. The gas chamber of the cabinet is filled with a certain pressure of insulating gas to ensure the safe operation of the ring network cabinet; most of the current ring network cabinets lack pressure relief devices. When an arc fault occurs in the gas chamber of the ring network cabinet, the gas pressure in the gas chamber of the ring network cabinet will If it is suddenly lifted, if the pressure cannot be released in time, it is prone to explosion, and there is a large safety hazard, which cannot meet the needs of use. Therefore, we have proposed a pressure relief device for the ring main unit to solve the above problems.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a pressure relief device for the ring main unit.

In order to achieve the above object, the utility model adopts the following technical solutions:

A pressure relief device for a ring network cabinet, including a pressure relief device body arranged on the ring network cabinet, the pressure relief device body includes a pressure relief hole opened on the inner wall of the left side of the ring network cabinet, and the pressure relief hole is used for For pressure relief operation, an elastic sealing mechanism matching the pressure relief hole is installed between the front inner wall and the rear inner wall of the ring network cabinet. The elastic sealing mechanism is used to seal the pressure relief hole. The left side of the blocking mechanism is in movable contact with a squeeze roller, and the bottom of the squeeze roller is fixedly connected with an obliquely arranged squeeze rod. The squeeze rod and the squeeze roller cooperate to squeeze the elastic blocking mechanism and release the pressure. For the plugging of the hole, the left side of the ring network cabinet is rotated and installed with a rotating shaft, the fixed sleeve on the rotating shaft is provided with a disc, the bottom end of the extrusion rod is fixedly connected with the top of the disc, and the fixed sleeve on the rotating shaft is located The rotary drive mechanism is used to drive the disk to rotate. The bottom end of the rotary drive mechanism is fixedly connected with a guide mechanism. The guide mechanism is used to provide vertical guidance for the rotary drive mechanism. The left side of the ring network cabinet is fixedly connected with an output The top of the shaft is fixedly connected to the electric telescopic rod of the guide mechanism. The left side of the ring network cabinet is provided with a first groove, and the guide mechanism is fixedly connected to the top inner wall and bottom inner wall of the first groove. The pressure sensor, the right side of the electric telescopic rod is fixed and electrically connected to the controller, the pressure sensor is electrically connected to the controller, and the pressure sensor is electrically connected to the controller, which can automatically Timely control the opening of the electric telescopic rod for pressure relief operations.

Preferably, the elastic blocking mechanism includes a blocking plate rotatably installed between the front inner wall and the rear inner wall of the ring network cabinet, the left side of the blocking plate is in movable contact with the right side of the squeezing roller, and the The left side is in active contact with the left inner wall of the ring network cabinet, and there is a groove on the left inner wall of the ring network cabinet, and a stretched wire is fixedly connected between the left inner wall of the groove and the left top of the blocking plate. The tension spring, the setting of the tension spring can always give the blocking plate a leftward pulling tension under the action of the elastic force, so that the left side of the blocking plate can always be in contact with the left inner wall of the ring network cabinet.

Preferably, the rotary drive mechanism includes a gear fixedly sleeved on the rotating shaft, the left side of the gear is meshed with a rack, and the top of the rack is fixedly connected with an anti-off block, and the setting of the anti-off block has the effect of anti-off , to avoid the phenomenon that the rack and the gear are separated.

Preferably, the guide mechanism includes a guide rod fixedly connected between the top inner wall and the bottom inner wall of the first groove, the guide rod is slidably provided with a moving rod, the top of the moving rod is fixedly connected to the bottom end of the rack, and the electric telescopic The top of the output shaft of the rod is fixedly connected with the bottom of the moving rod.

Preferably, the left side of the blocking plate is embedded with a sealing rubber, the left side of the sealing rubber is in movable contact with the left inner wall of the ring network cabinet, and the sealing rubber is used to realize the sealing connection between the sealing plate and the left inner wall of the ring network cabinet .

Preferably, a mounting block is fixedly connected to the left side of the ring network cabinet, a first bearing is fixedly connected to the front side of the mounting block, and the inner ring of the first bearing is fixedly connected to the outer side of the rotating shaft.

Preferably, a pin shaft is fixedly connected between the front inner wall and the rear inner wall of the ring network cabinet, a circular hole is provided on the front side of the blocking plate, and a second bearing is provided on the fixed sleeve in the circular hole. The inner side of the inner ring of the bearing is fixedly connected with the outer side of the pin shaft.

Compared with the prior art, the beneficial effects of the utility model are:

1. Through the cooperation of elastic sealing mechanism, extrusion roller, extrusion rod, disc, rotating shaft, rotary drive mechanism, guiding mechanism, electric telescopic rod, controller and pressure sensor, it can be used when the internal pressure of the ring main unit is high. , automatically release the plugging of the pressure relief hole in time for pressure relief operation, and facilitate the automatic sealing of the pressure relief hole after pressure relief, reducing the safety hazard of explosion;

2. Through the setting of the tension spring in the stretched state in the elastic blocking mechanism, the blocking plate can always be given a tension force to the left, so that the blocking plate can always be in close contact with the left inner wall of the ring network cabinet, Improve plugging stability;

The utility model is convenient for automatic and timely pressure relief when the internal pressure of the ring network cabinet is high, reduces the risk of explosion caused by high pressure, reduces potential safety hazards, and is convenient for automatically and timely sealing the ring network cabinet after the completion of pressure relief, which is convenient Use it next time.

Description of drawings

Fig. 1 is a partial sectional structural schematic diagram of a pressure relief device for a ring network cabinet proposed by the utility model;

Fig. 2 is the schematic diagram of the enlarged structure of part A in Fig. 1;

FIG. 3 is an enlarged structural schematic diagram of part B in FIG. 2 .

In the figure: 100, ring network cabinet; 1, pressure sensor; 2, blocking plate; 3, pressure relief hole; 4, groove; 5, tension spring; 6, extrusion rod; 7, extrusion roller; 8 , the first groove; 9, the guide rod; 10, the moving rod; 11, the electric telescopic rod; 12, the controller; 13, the rack; 14, the rotating shaft; 15, the disc; 16, the gear.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a pressure relief device for a ring network cabinet includes a pressure relief device body disposed on the ring network cabinet 100, and the pressure relief device body includes a pressure relief device provided on the left inner wall of the ring network cabinet 100. Hole 3, between the front inner wall and the rear inner wall of the ring network cabinet 100, an elastic sealing mechanism matching the pressure relief hole 3 is rotatably installed. The blocking plate 2 between the side inner walls, wherein a pin shaft is fixedly connected between the front inner wall and the rear inner wall of the ring network cabinet 100, the front side of the blocking plate 2 is provided with a circular hole, and the circular hole is fixed with a sleeve There is a second bearing, the inner side of the inner ring of the second bearing is fixedly connected with the outer side of the pin shaft, and the second bearing cooperates with the pin shaft to achieve the effect of rotating and installing the blocking plate 2, and the left side of the blocking plate 2 is embedded Equipped with sealing rubber, the left side of the sealing rubber is in movable contact with the left inner wall of the ring network cabinet 100, and the sealing connection between the sealing plate 2 and the ring network cabinet 100 is realized through the sealing rubber, and on the left inner wall of the ring network cabinet 100 A groove 4 is provided, and a tension spring 5 in a stretched state is fixedly connected between the left side inner wall of the groove 4 and the left top of the blocking plate 2. The setting of the tension spring 5 can always give the blocking plate 2. A tightening force to the left to improve the stability of blockage;

The left side of the blocking plate 2 is in movable contact with a squeeze roller 7, and the bottom of the squeeze roller 7 is fixedly connected with an obliquely arranged squeeze rod 6, and the left side of the ring network cabinet 100 is equipped with a rotating shaft 14, wherein the ring network cabinet 100 A mounting block is fixedly connected to the left side of the mounting block, and a first bearing is fixedly connected to the front side of the mounting block. The inner side of the inner ring of the first bearing is fixedly connected to the outer side of the rotating shaft 14. The first bearing plays the role of rotating and installing the rotating shaft 14. The rotating shaft 14, the fixed sleeve is provided with a disc 15, the bottom end of the extrusion rod 6 is fixedly connected with the top of the disc 15, and the fixed sleeve on the rotating shaft 14 is provided with a rotary drive mechanism positioned at the front side of the disc 15, wherein the rotary drive mechanism includes a fixed The gear 16 sleeved on the rotating shaft 14, the left side of the gear 16 is meshed with a rack 13, and the top of the rack 13 is fixedly connected with an anti-off block. The setting of the anti-off block plays an anti-off effect and prevents the rack 13 from separate from gear 16;

The bottom end of the rack 13 is fixedly connected with a guide mechanism, and the left side of the ring network cabinet 100 is fixedly connected with an electric telescopic rod 11 whose top end of the output shaft is fixedly connected with the guide mechanism. The left side of the ring network cabinet 100 is provided with a first groove 8, Wherein the guide mechanism comprises a guide rod 9 fixedly connected between the top inner wall and the bottom inner wall of the first groove 8, the guide rod 9 slides and is provided with a moving rod 10, and the top of the moving rod 10 is provided with a guide hole, and the inner wall of the guide hole is connected to the guide hole. The outer side of the guide rod 9 is slidingly connected, and the top of the moving rod 10 is fixedly connected with the bottom end of the rack 13. The moving rod 10 and the guide rod 9 cooperate to guide the rack 13. The output shaft of the electric telescopic rod 11 The top is fixedly connected to the bottom of the moving rod 10, the pressure sensor 1 is fixedly connected to the left inner wall of the ring network cabinet 100, the right side of the electric telescopic rod 11 is fixed and electrically connected to the controller 12, the pressure sensor 1 and the controller 12 Electrically connected, the way that the pressure sensor 1 is electrically connected with the controller 12 can control the opening of the electric telescopic rod 11 in time when the internal pressure of the ring network cabinet 100 is relatively high. Automatic and timely pressure relief reduces the risk of explosion caused by high pressure and reduces potential safety hazards, and it is convenient to automatically and timely block the ring network cabinet 100 after the pressure relief is completed, which is convenient for the next use.

Working principle: When in use, the positive and negative opening and closing pressure values of the electric telescopic rod 11 can be set in advance through the controller 12. The pressure sensor 1 detects the pressure inside the ring network cabinet 100. When the pressure reaches the preset value, The pressure sensor 1 transmits the signal to the controller 12, the controller 12 controls the electric telescopic rod 11 to start forward, the output shaft of the electric telescopic rod 11 drives the moving rod 10 to move upward, the moving rod 10 slides upward on the guide rod 9, and the moving rod 10 drives the rack 13 to move upwards, the rack 13 drives the gear 16 meshed with it to rotate, the gear 16 drives the rotating shaft 14 to rotate, the rotating shaft 14 drives the disc 15 to rotate, and the disc 15 drives the extruding rod 6 to rotate to the right, extruding The rod 6 drives the squeezing roller 7 to rotate to the right to squeeze the blocking plate 2, and the force of extrusion drives the blocking plate 2 to rotate to the right and stretches the tension spring 5. The rotation gradually removes the blockage of the pressure relief hole 3. At this time, the internal gas of the ring network cabinet 100 is discharged to the outside through the pressure relief hole 3. With the discharge of the gas, the air pressure inside the ring network cabinet 100 is gradually reduced, thereby realizing automatic The purpose of releasing pressure inside the ring main unit 100;

When the pressure sensor 1 detects that the pressure inside the ring network cabinet 100 is lower than the preset value, the pressure sensor 1 transmits the signal to the controller 12, and the controller 12 controls the electric telescopic rod 11 to start in reverse, similarly to the electric telescopic rod 11 The movement process of the positive start is opposite, so that the squeeze roller 7 turns to the left and relaxes the squeezing force on the blocking plate 2. At this time, the elastic force of the tension spring 5 in the stretched state drives the blocking plate 2 to Turn left, and the sealing plate 2 drives the sealing rubber to turn left to block the pressure relief hole 3 again, and then wait for the next pressure relief operation, so that it is convenient to automatically release the pressure in time when the internal pressure of the ring main unit 100 is high. The risk of explosion caused by high pressure is reduced, the potential safety hazard is reduced, and the ring main unit 100 is conveniently blocked automatically and in time after the pressure relief is completed, which is convenient for the next use.

In this practical description, it should also be noted that, unless otherwise specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or It may be detachably connected, or integrally connected, may be mechanically connected, may also be electrically connected, may be directly connected, may also be connected through an intermediary, and may be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (7)

1. A pressure relief device for a ring network cabinet, comprising a pressure relief device body arranged on the ring network cabinet (100), and the pressure relief device body includes a pressure relief device body provided on the left inner wall of the ring network cabinet (100) The pressure relief hole (3) is characterized in that an elastic sealing mechanism matched with the pressure relief hole (3) is installed between the front inner wall and the rear inner wall of the ring network cabinet (100), and the elastic sealing The left side of the mechanism is in active contact with a squeeze roller (7), and the bottom of the squeeze roller (7) is fixedly connected with an obliquely arranged squeeze rod (6). ), the fixed sleeve on the rotating shaft (14) is provided with a disc (15), the bottom end of the extrusion rod (6) is fixedly connected with the top of the disc (15), and the fixed sleeve on the rotating shaft (14) is provided with a disc ( 15) The rotary drive mechanism on the front side, the bottom end of the rotary drive mechanism is fixedly connected with the guide mechanism, and the left side of the ring network cabinet (100) is fixedly connected with the electric telescopic rod (11) whose top end of the output shaft is fixedly connected with the guide mechanism. The first groove (8) is opened on the left side of the network cabinet (100), and the guide mechanism is fixedly connected with the top inner wall and the bottom inner wall of the first groove (8). The left inner wall of the ring network cabinet (100) is fixedly connected with pressure The sensor (1), the right side of the electric telescopic rod (11) is fixed and electrically connected to the controller (12), and the pressure sensor (1) is electrically connected to the controller (12). 2. A pressure relief device for a ring network cabinet according to claim 1, characterized in that, the elastic sealing mechanism includes a rotating device installed between the front inner wall and the rear inner wall of the ring network cabinet (100). The blocking plate (2), the left side of the blocking plate (2) is in active contact with the right side of the extrusion roller (7), the left side of the blocking plate (2) is in contact with the left inner wall of the ring main unit (100) Movable contact, a groove (4) is opened on the left inner wall of the ring network cabinet (100), and the left inner wall of the groove (4) is fixedly connected with the left top of the blocking plate (2). State tension spring (5). 3. A pressure relief device for a ring network cabinet according to claim 1, characterized in that, the rotary drive mechanism includes a gear (16) fixedly sleeved on the rotating shaft (14), the gear (16) A rack (13) is engaged on the left side of the rack, and the top of the rack (13) is fixedly connected with an anti-off block. 4. A pressure relief device for a ring network cabinet according to claim 3, characterized in that the guide mechanism includes a guide rod ( 9), the upper sliding sleeve of the guide rod (9) is provided with a moving rod (10), the top of the moving rod (10) is fixedly connected with the bottom of the rack (13), and the top of the output shaft of the electric telescopic rod (11) is connected with the moving The bottom of the rod (10) is fixedly connected. 5. A pressure relief device for a ring network cabinet according to claim 2, characterized in that, the left side of the blocking plate (2) is embedded with a sealing rubber, and the left side of the sealing rubber is in contact with the ring network The left inner wall of the cabinet (100) is in movable contact. 6. A pressure relief device for a ring network cabinet according to claim 1, characterized in that, the left side of the ring network cabinet (100) is fixedly connected with a mounting block, and the front side of the mounting block is fixedly connected with a The first bearing, the inner side of the inner ring of the first bearing is fixedly connected with the outer side of the rotating shaft (14). 7. A pressure relief device for a ring network cabinet according to claim 2, characterized in that, a pin shaft is fixedly connected between the front inner wall and the rear inner wall of the ring network cabinet (100), and the sealing The front side of the blocking plate (2) is provided with a circular hole, and the fixed sleeve in the circular hole is provided with a second bearing, and the inner ring inner side of the second bearing is fixedly connected with the outer side of the pin shaft.

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