Feeder terminal gas insulation ring main unit

Abstract

The utility model discloses a feeder terminal gas insulation ring main unit, belongs to the technical field of ring main units, and aims to solve the problems that an arranged heat dissipation window causes internal insulation gas to pollute the environment and the overall stability is affected when the heat dissipation window is fixed through wheels. Comprising a cabinet body, a cabinet door, a controller, gas treatment mechanisms, wheels and fixing mechanisms, the cabinet door is connected to the front face of the cabinet body through hinges, the controller is fixedly installed above the left side of the cabinet body, the gas treatment mechanisms are arranged inside and above the cabinet body, the wheels are symmetrically and fixedly connected to the periphery of the bottom face of the cabinet body, and the fixing mechanisms are symmetrically arranged below the left side and the right side of the cabinet body; through the arrangement of the gas treatment mechanism, when the temperature and the pressure are abnormal, a signal is transmitted to the controller, the gas in the cabinet body enters the treatment box through the exhaust pipe, the gas is deeply treated and purified, and the treated clean gas is discharged into the environment, so that the pollution to the environment is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ring main units, and particularly relates to a feeder terminal gas-insulated ring main unit. Background Art

[0002] The working principle of a gas-insulated ring main unit is based on the load switch and fuse inside it. The load switch is used to switch on and off the load current, break the short-circuit current and the no-load current of the transformer, as well as the charging current of an overhead line and a cable line over a certain distance. The fuse is used to protect the circuit from faults such as overload and short circuit. The gas-insulated ring main unit uses gas as the insulating and arc-extinguishing medium to ensure that no arc or electric shock occurs during the switching operation. SF6 (sulfur hexafluoride) is a colorless, odorless, non-flammable and non-explosive gas with excellent insulating and arc-extinguishing properties, and SF6 is usually used as the insulating medium inside the gas-insulated ring main unit.

[0003] In the prior art, there is a gas-insulated ring main unit with the patent publication number CN209766903U. Inside the ring main unit body of the above patent, there is also an air box, and a temperature rise and heat dissipation mechanism is commonly surrounded outside the left side wall, the rear side wall and the right side wall of the air box; the temperature rise and heat dissipation mechanism includes a shell, an electric heating sheet and a heat dissipation component; the heat dissipation component is composed of a heat exchange tube, a low-pressure tube, a cooling tube, an intake pipe and a compressor. This product effectively solves the problem of excessive temperature inside the air box, avoids inducing safety accidents, and fully ensures the service performance and service safety of this gas-insulated ring main unit. However, there are still the following deficiencies in actual use: From a practical perspective, when this ring main unit is in use, the set heat dissipation window will cause the internal insulating gas to enter the external environment. However, SF6 has a greater impact on the environment, and direct emission will pollute the air. Moreover, after the whole device is moved to a designated position by the wheels at the bottom, it is still fixed by the wheels, which will cause the whole to slide on the ground during use and affect the overall stability.

[0004] Therefore, a feeder terminal gas-insulated ring main unit is needed to solve the problems in the prior art that the set heat dissipation window will cause the internal insulating gas to pollute the environment and the fixation by wheels will affect the overall stability during use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a feeder terminal gas-insulated ring main unit to solve the problems put forward in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A gas-insulated ring main unit for a feeder terminal, comprising a cabinet body, a cabinet door, a controller, a gas treatment mechanism, wheels and a fixing mechanism. The cabinet door is hinged to the front of the cabinet body. The controller is fixedly installed above the left side of the cabinet body. The gas treatment mechanism is arranged inside and above the cabinet body. The wheels are symmetrically and fixedly connected to the four corners of the bottom surface of the cabinet body. The fixing mechanisms are symmetrically arranged below the left and right sides of the cabinet body.

[0007] The gas treatment mechanism consists of a gas storage tank, an air pump, an intake pipe, a fan, an exhaust pipe, a control valve, a treatment box, a temperature sensor and a pressure sensor. The gas storage tank is fixedly connected to the middle of the right side of the cabinet body. The air pump is connected below the gas storage tank. The intake pipe is fixedly connected below the air pump and extends into the interior of the cabinet body. The fan is fixedly connected to the bottom surface inside the cabinet body.

[0008] It should be noted in the solution that the exhaust pipe is fixedly connected to the top of the cabinet body and is communicated with the interior of the cabinet body. The control valve is fixedly arranged outside the exhaust pipe. The treatment box is arranged at the right end of the exhaust pipe, and an outlet pipe is arranged above the treatment box.

[0009] It is further worth noting that the temperature sensor and the pressure sensor are respectively fixedly connected to the upper left and right sides inside the cabinet body.

[0010] It is even further necessary to note that the fixing mechanism consists of a fixing plate, a sliding rod, a fixing seat, a top plate, a first spring, a moving plate, a second spring and a positioning block. The fixing plate is fixedly connected to the lower left side of the cabinet body. The sliding rod is slidably connected above and below the fixing plate. The fixing seat is fixedly connected to the bottom surface of the sliding rod. The top plate is fixedly connected to the top surface of the sliding rod.

[0011] As a preferred embodiment, the first spring is fixedly connected between the bottom surface of the top plate and the top surface of the fixing plate and is sleeved outside the sliding rod.

[0012] As a preferred embodiment, a groove is formed on the top surface of the top plate. The moving plate is slidably connected inside the groove. A sliding groove is formed on the side of the groove close to the cabinet body and is communicated with the side wall of the top plate. The positioning block is slidably connected inside the sliding groove and is fixedly connected to the moving plate. The second spring is fixedly connected between the moving plate and the side surface of the groove.

[0013] As a preferred embodiment, positioning grooves adapted to the size of the positioning block are symmetrically formed on the upper and lower outer walls of the cabinet body.

[0014] Compared with the prior art, the gas-insulated ring main unit for a feeder terminal provided by the present utility model has at least the following beneficial effects:

[0015] (1) Through the provided gas treatment mechanism, the environment inside the cabinet can be monitored in real time through temperature sensors and pressure sensors. When the temperature and pressure are abnormal, signals are transmitted to the controller to control the rotation of the fan and the opening of the control valve. The gas inside the cabinet enters the treatment box through the exhaust pipe for in-depth treatment and purification. The clean gas after treatment is then discharged into the environment to avoid environmental pollution.

[0016] (2) Through the provided fixing mechanism, after moving to the designated position by the wheels, the overall ring main unit is fixed to the ground through the fixing seat to prevent the ring main unit from moving and improve the stability during overall use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the cabinet of the present utility model;

[0019] Figure 3 is a schematic sectional structure diagram of the present utility model;

[0020] Figure 4 is a schematic diagram of the structure of the fixing mechanism of the present utility model.

[0021] In the figure: 1, cabinet; 2, cabinet door; 3, controller; 4, gas treatment mechanism; 5, wheels; 6, fixing mechanism; 401, gas storage tank; 402, air pump; 403, intake pipe; 404, fan; 405, exhaust pipe; 406, control valve; 407, treatment box; 408, temperature sensor; 409, pressure sensor; 601, fixing plate; 602, sliding rod; 603, fixing seat; 604, top plate; 605, first spring; 606, moving plate; 607, second spring; 608, positioning block; 609, positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in conjunction with embodiments.

[0023] Please refer to Figures 1-4 , the present utility model provides a feeder terminal gas-insulated ring main unit, including a cabinet 1, a cabinet door 2, a controller 3, a gas treatment mechanism 4, wheels 5 and a fixing mechanism 6. The cabinet door 2 is connected to the front of the cabinet 1 by hinges. The controller 3 is fixedly installed above the left side of the cabinet 1. The gas treatment mechanism 4 is arranged inside and above the cabinet 1. The wheels 5 are symmetrically and fixedly connected to the four corners of the bottom surface of the cabinet 1. The fixing mechanism 6 is symmetrically arranged below the left and right sides of the cabinet 1.

[0024] The gas treatment mechanism 4 is composed of a gas storage tank 401, an air pump 402, an intake pipe 403, a fan 404, an exhaust pipe 405, a control valve 406, a treatment box 407, a temperature sensor 408 and a pressure sensor 409. The gas storage tank 401 is fixedly connected to the middle of the right side of the cabinet body 1. The air pump 402 is connected below the gas storage tank 401. The intake pipe 403 is fixedly connected below the air pump 402, and the intake pipe 403 extends into the interior of the cabinet body 1. The fan 404 is fixedly connected to the inner bottom surface of the cabinet body 1.

[0025] Further, as shown in Figure 1 , Figure 2 and Figure 3 it is worth specifically stating that the exhaust pipe 405 is fixedly connected to the upper part of the cabinet body 1 and is communicated with the interior of the cabinet body 1. The control valve 406 is fixedly arranged outside the exhaust pipe 405. The treatment box 407 is arranged at the right end of the exhaust pipe 405, and an air outlet pipe is arranged above the treatment box 407.

[0026] Further, as shown in Figure 1 , Figure 2 and Figure 3 it is worth specifically stating that the temperature sensor 408 and the pressure sensor 409 are respectively fixedly connected to the upper left and right sides inside the cabinet body 1;

[0027] The model of the temperature sensor 408 is DS18B20, which is a commonly used digital temperature sensor with advantages such as strong anti-interference ability, high reliability, and an accuracy of ±0.5°C. It is suitable for temperature measurement in a special environment with a small space and strong electromagnetic interference inside the ring main unit. The model of the pressure sensor 409 is F3-602108-05000, which is designed specifically for SF6 and is used to monitor the SF6 gas pressure in high-voltage switchgear, transformers, and cables.

[0028] According to the above working process, it can be seen that through the set gas treatment mechanism 4, the environment inside the cabinet body 1 can be monitored in real time through the temperature sensor 408 and the pressure sensor 409. When the temperature and pressure are abnormal, signals are transmitted to the controller 3 to control the fan 404 to rotate and the control valve 406 to open, so that the gas inside the cabinet body 1 enters the interior of the treatment box 407 through the exhaust pipe 405 for in-depth treatment and purification. The clean gas after treatment is then discharged into the environment to avoid polluting the environment.

[0029] Further, as shown in Figure 2 , Figure 3 and Figure 4As shown, it is worth specifically explaining that the fixing mechanism 6 is composed of a fixing plate 601, a sliding rod 602, a fixing seat 603, a top plate 604, a first spring 605, a moving plate 606, a second spring 607 and a positioning block 608. The fixing plate 601 is fixedly connected to the lower left side of the cabinet body 1. The sliding rod 602 is slidably connected above and below the fixing plate 601. The fixing seat 603 is fixedly connected to the bottom surface of the sliding rod 602. The top plate 604 is fixedly connected to the top surface of the sliding rod 602.

[0030] Further, as shown in Figure 2 , Figure 3 and Figure 4 it is worth specifically explaining that the first spring 605 is fixedly connected between the bottom surface of the top plate 604 and the top surface of the fixing plate 601, and the first spring 605 is sleeved outside the sliding rod 602. A groove is formed on the top surface of the top plate 604. The moving plate 606 is slidably connected inside the groove. A chute communicating with the side wall of the top plate 604 is formed on the side of the groove close to the cabinet body 1. The positioning block 608 is slidably connected inside the chute, and the positioning block 608 is fixedly connected to the moving plate 606. The second spring 607 is fixedly connected between the moving plate 606 and the side surface of the groove.

[0031] Further, as shown in Figure 2 , Figure 3 and Figure 4 it is worth specifically explaining that positioning grooves 609 adapted to the size of the positioning block 608 are symmetrically formed on the upper and lower outer walls of the cabinet body 1;

[0032] When the positioning block 608 is inserted into the upper positioning groove 609, the bottom surface height of the fixing seat 603 is higher than the bottom surface of the wheel 5, which can ensure the smooth movement of the wheel 5; when the positioning block 608 is inserted into the lower positioning groove 609, the fixing seat 603 is closely attached to the ground, ensuring that the overall device is stably fixed to the ground through the fixing seat 603.

[0033] This solution has the following working process: During use, the wheels 5 at the bottom drive the whole to move. During the movement, the positioning block 608 is inserted into the upper positioning groove 609. The bottom surface of the fixed seat 603 is driven by the slide rod 602 to be higher than the bottom surface of the wheels 5 to ensure the smooth movement of the wheels 5. After reaching the designated position, the moving plate 606 is pushed to drive the positioning block 608 out of the upper positioning groove 609. Under the elastic action of the first spring 605, the top plate 604 is driven to reset. The fixed seat 603 is driven to move downward by the slide rod 602, so that the fixed seat 603 is close to the bottom surface. At the same time, under the elastic action of the second spring 607, the positioning block 608 is driven to insert into the lower positioning groove 609 to fix the position of the top plate 604, thereby ensuring that the whole device is stably fixed on the ground through the fixed seat 603; When the internal temperature sensor 408 and pressure sensor 409 detect abnormalities in the environment inside the cabinet body 1 in real time, they transmit signals to the controller 3. The controller 3 controls the fan 404 to rotate and simultaneously opens the control valve 406. The gas inside the cabinet body 1 enters the treatment box 407 through the exhaust pipe 405 for in-depth treatment and purification. The clean gas after treatment is then discharged into the environment to avoid polluting the environment. Then, through the air pump 402, the gas inside the gas storage tank 401 is transported into the cabinet body 1 to maintain the air pressure balance inside the cabinet body 1.

[0034] In summary: Through the provided gas treatment mechanism 4, the environment inside the cabinet body 1 can be monitored in real time by the temperature sensor 408 and pressure sensor 409. When the temperature and pressure are abnormal, signals are transmitted to the controller 3 to control the rotation of the fan 404 and the opening of the control valve 406. The gas inside the cabinet body 1 enters the treatment box 407 through the exhaust pipe 405 for in-depth treatment and purification. The clean gas after treatment is then discharged into the environment to avoid polluting the environment; Through the provided fixing mechanism 6, after moving to the designated position through the wheels 5, the whole ring main unit is fixed on the ground through the fixed seat 603 to prevent the ring main unit from moving and improve the stability during the whole use.

Claims

1. A feeder terminal gas insulated ring main unit, comprising a cabinet body (1), a cabinet door (2), a controller (3), a gas processing mechanism (4), wheels (5) and a fixing mechanism (6), characterized in that: The cabinet door (2) is hingedly connected to the front of the cabinet (1), the controller (3) is fixedly installed on the upper left side of the cabinet (1), the gas processing mechanism (4) is arranged inside and above the cabinet (1), the wheels (5) are symmetrically fixedly connected to the bottom of the cabinet (1) around the periphery, and the fixing mechanism (6) is symmetrically arranged below the left and right sides of the cabinet (1); The gas processing mechanism (4) is composed of a gas storage tank (401), an air pump (402), an air intake pipe (403), a fan (404), an exhaust pipe (405), a control valve (406), a processing box (407), a temperature sensor (408) and a pressure sensor (409); the gas storage tank (401) is fixedly connected to the middle of the right side of the cabinet (1); the air pump (402) is connected to the bottom of the gas storage tank (401); the air intake pipe (403) is fixedly connected to the bottom of the air pump (402), and the air intake pipe (403) extends into the interior of the cabinet (1); and the fan (404) is fixedly connected to the inner bottom surface of the cabinet (1).

2. A feeder terminal gas insulated ring main unit according to claim 1, characterized in that: The exhaust pipe (405) is fixedly connected to the top of the cabinet (1) and communicates with the interior of the cabinet (1). The control valve (406) is fixedly arranged on the outside of the exhaust pipe (405). The processing box (407) is arranged at the right end of the exhaust pipe (405), and an exhaust pipe is arranged above the processing box (407).

3. A feeder terminal gas insulated ring main unit according to claim 1, characterized in that: The temperature sensor (408) and the pressure sensor (409) are respectively fixedly connected to the upper left and right sides of the interior of the cabinet (1).

4. A feeder terminal gas insulated ring main unit according to claim 1, characterized in that: The fixing mechanism (6) is composed of a fixing plate (601), a sliding rod (602), a fixing seat (603), a top plate (604), a first spring (605), a movable plate (606), a second spring (607) and a positioning block (608); the fixing plate (601) is fixedly connected to the lower left side of the cabinet (1); the sliding rod (602) is slidably connected to the upper and lower parts of the fixing plate (601); the fixing seat (603) is fixedly connected to the bottom surface of the sliding rod (602); and the top plate (604) is fixedly connected to the top surface of the sliding rod (602).

5. A feeder terminal gas insulated ring main unit according to claim 4, characterized in that: The first spring (605) is fixedly connected between the bottom surface of the top plate (604) and the top surface of the fixed plate (601), and the first spring (605) is sleeved on the outside of the sliding rod (602).

6. A feeder terminal gas insulated ring main unit according to claim 4, characterized in that: The top surface of the top plate (604) is provided with a groove, the movable plate (606) is slidably connected to the inside of the groove, the side of the groove close to the cabinet (1) is provided with a sliding groove connected to the side wall of the top plate (604), the positioning block (608) is slidably connected to the inside of the sliding groove, and the positioning block (608) is fixedly connected to the movable plate (606), and the second spring (607) is fixedly connected between the movable plate (606) and the side of the groove.

7. A feeder terminal gas insulated ring main unit according to claim 4, characterized in that: The outer wall of the cabinet (1) is symmetrically provided with positioning grooves (609) matching the size of the positioning block (608) in the upper and lower parts.

Images