Underground intelligent preassembled box-type substation

Abstract

The utility model relates to the technical field of preassembled box-type substations, in particular to a buried intelligent preassembled box-type substation, which comprises a buried box body and a box cover, the box cover is arranged on the upper portion of the buried box body and fixedly connected with the buried box body, and a first box door, a second box door, a third box door and a ventilation pipe are arranged on the box cover. The first box door, the second box door and the third box door are hinged to the box cover and can be opened upwards, the ventilation pipe is vertically arranged, the underground box body is integrally arranged underground, a power distribution cabinet body, a control cabinet body, an exhaust fan, a heat dissipation device and a monitoring device are arranged in the underground box body, and the monitoring device comprises a monitoring sensor and an intelligent gateway. The monitoring sensor monitors the working state of the power distribution cabinet body and sends data to the intelligent gateway, and the intelligent gateway sends the working state data to the management server through 4G and 5G networks. According to the scheme, the occupied space is saved, the structural strength is high, maintenance is convenient, and meanwhile the functions of intelligent fire fighting and remote monitoring are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated box-type substations, in particular to an underground intelligent prefabricated box-type substation. Background Technique

[0002] A box-type substation, also called a prefabricated substation or a prefabricated transformer substation, is a compact power distribution equipment that arranges high-voltage switchgear, distribution transformers, and low-voltage distribution devices according to the designed wiring scheme and installs them uniformly in an integrated factory prefabricated box body. Functions such as transformer step-down and low-voltage power distribution in the box body are organically combined. The prefabricated box body has multiple functions such as moisture-proof, rust-proof, dust-proof, mouse-proof, fire-proof, anti-theft, heat-insulating, fully enclosed, and movable, and is widely applicable to mines, factories and enterprises, oil and gas fields, and wind power stations. It replaces the original civil power distribution room and substation and becomes a new type of complete set of power transformation and distribution devices.

[0003] In the prior art, traditional box-type substations have a large floor area and high maintenance costs, and it is difficult to make their appearance consistent with the environment, and they gradually cannot meet the construction requirements of general distribution networks. The new type of underground box-type substation will be the mainstream of the development of box-type substations. However, existing underground substations still have many deficiencies, including:

[0004] 1. The substation is buried underground, and installation and maintenance are both relatively troublesome; when equipment needs to be maintained or replaced, it is necessary to move the substation to the ground by means of hoisting or pre-installed lifting devices. Restricted by the volume and weight of the substation, the time and economic costs consumed are relatively high;

[0005] 2. Since the substation is buried underground, a fire may occur during an electrical fault, and fire protection factors need to be considered;

[0006] 3. The heat dissipation of underground substations generally adopts the air-cooling method. Considering the length of the ventilation duct and the thermal conductivity of the soil, the heat dissipation efficiency is relatively poor;

[0007] 4. The degree of intelligence of underground substations is insufficient, and remote monitoring functions cannot be provided. Content of the Utility Model

[0008] The utility model provides an underground intelligent prefabricated box-type substation, which saves floor space, has high structural strength, does not require lifting of the substation during maintenance, and also has functions of intelligent fire protection and remote monitoring.

[0009] The present application provides the following technical solutions:

[0010] An underground intelligent prefabricated substation, comprising an underground box body and a box cover. Among them, the underground box body is integrally arranged below the ground, with the opening of the underground box body facing upwards. Inside the underground box body, there are a distribution cabinet body, a control cabinet body, an exhaust fan, a heat dissipation device, and a monitoring device. The box cover is arranged on the upper part of the underground box body and fixedly connected to the underground box body. On the box cover, there are a first box door, a second box door, a third box door, and a ventilation pipe. The first box door, the second box door, and the third box door are hinged to the box cover and can be opened upwards by 120 degrees in the vertical direction. Above the first box door, the second box door, and the third box door, there is a culvert leading to the ground. A sealing device is provided at the connection between the box door and the box cover. The ventilation pipe is vertically arranged and connected to the exhaust fan inside the underground box body. The monitoring device includes a monitoring sensor and an intelligent gateway. The monitoring sensor monitors the working state of the distribution cabinet body and sends the data to the intelligent gateway, and the intelligent gateway sends the working state data to the management server through 4G and 5G networks.

[0011] Technical principle: The underground intelligent box substation is integrally arranged underground, and inside there are a distribution cabinet, a control cabinet, an exhaust system, and a heat dissipation system. The first box door and the second box door are used for equipment replacement, and the third box door is used for personnel entry and exit. At the same time, a monitoring device is configured to remotely monitor the real-time working state of the substation.

[0012] Beneficial effects:

[0013] 1. The distribution location and method are not affected by factors such as the regional environment, can penetrate into the load center, reduce the power supply radius, improve the voltage quality at the end, and are suitable for power supply and distribution in residential communities, municipal engineering, industrial and mining enterprises, and special sensitive areas with requirements for regional and environmental coordination.

[0014] 2. The whole machine is buried underground, and greening can be set on the ground or roads, parking lots, etc. can be made, which is coordinated with the surrounding environment; it does not occupy ground space and reduces infrastructure investment such as civil engineering.

[0015] 3. There are dedicated channels for equipment replacement and maintenance personnel to enter and exit. During the maintenance process, there is no need to lift the box substation, avoiding the installation of a lifting device for the box substation, saving the cost of the lifting device and maintenance expenses.

[0016] 4. All access channels and interface pipes are arranged at the top box cover, making access and maintenance more convenient. There are no openings on the box body, improving the sealing performance; the whole has good structural strength, can effectively resist the influence of various natural disasters and ground fires, has a long service life, and is safe and reliable.

[0017] 5. The monitoring device can continuously send the real-time working state information of the substation to the management server, and the operator can conveniently remotely manage the substation.

[0018] Further, an intelligent fire-fighting device is provided inside the buried box, which includes a sensor, a controller and a gas fire-extinguishing device. The sensor and the gas fire-extinguishing device are connected to the controller. The sensor is used to detect the temperature, smoke and fire signals inside the buried box. The controller judges the detection data of the sensor and starts the gas fire-extinguishing device according to preset conditions. When the gas fire-extinguishing device is started, the monitoring device generates a synchronous alarm and sends it to the management server.

[0019] Beneficial effects: The intelligent fire-fighting device realizes intelligent monitoring and emergency disposal of the working conditions of the distribution cabinet body, and eliminates potential faults in a timely manner.

[0020] Further, an emergency drainage device is also provided inside the buried box, which includes a liquid level sensor, a drainage water pump and a drainage pipe. The liquid level sensor is connected to the controller of the intelligent fire-fighting device. The drainage water pump is electrically connected to the controller. One end of the drainage pipe is connected to the drainage water pump, and the other end is connected to a drainage pipe near the box substation setting area. The controller controls the drainage water pump according to the detection data of the liquid level sensor. When the drainage water pump is started, the monitoring device generates a synchronous alarm and sends it to the management server.

[0021] Beneficial effects: The liquid level sensor detects the water accumulation situation inside the buried box, and the controller starts the drainage water pump to drain it in time, ensuring the safe operation of the substation.

[0022] Further, a vertical water inlet pipe and a water outlet pipe are provided on the box cover. The heat dissipation device includes a heat dissipation water pump and a heat dissipation pipe network. The heat dissipation pipe network is uniformly arranged on the inner wall of the buried box for heat exchange with the air inside the buried box. The heat dissipation pipe network is respectively connected to the heat dissipation water pump, one end of the water inlet pipe and one end of the water outlet pipe. The other ends of the water inlet pipe and the water outlet pipe are connected to one or more of the natural water source, landscape water source and fire fighting pool near the box substation setting area.

[0023] Beneficial effects: Since the heat dissipation pipe network is uniformly arranged on the inner wall of the buried box, more sufficient heat exchange can be realized. Therefore, the water cooling method has a better heat dissipation effect than the traditional air cooling method. At the same time, the water cooling device has lower noise and is more suitable for noise-sensitive areas.

[0024] Further, both the buried box and the box cover are made of glass fiber reinforced cement.

[0025] Beneficial effects: Glass fiber reinforced cement (GRC new material) is a composite material made of alkali-resistant glass fiber as the reinforcing agent and low-alkali cement mortar as the matrix. It has the characteristics of light weight, high tensile and bending strength, durability, impact resistance and good workability. The substation shell made of GRC new material has many advantages such as light weight, high mechanical strength, excellent corrosion resistance and sealing performance, and is very suitable for the complex use environment of buried installation. Description of the Drawings

[0026] Figure 1 This is the external schematic diagram of a buried intelligent prefabricated box-type substation of the present utility model;

[0027] Figure 2 This is the floor plan of the buried box body of a buried intelligent prefabricated box-type substation of the present utility model. Specific embodiments

[0028] The following is a further detailed description through specific embodiments:

[0029] The markings in the attached drawings of the specification include: buried box body 1, box cover 2, first box door 3, second box door 4, ventilation pipe 5, third box door 6, water pipe 7, intelligent fire-fighting device 8, transformer 9, low-voltage cabinet 10, high-voltage cabinet 11, and aluminum alloy ladder 12.

[0030] Embodiment 1

[0031] As Figure 1 shown, a buried intelligent prefabricated box-type substation includes a buried box body 1 and a box cover 2. Among them, the buried box body 1 is integrally arranged below the ground, and its opening faces upward. The box cover 2 is arranged on the upper part of the buried box body 1 and is fixedly connected to the buried box body 1. The box cover 2 is provided with a first box door 3, a second box door 4, a third box door 6, a ventilation pipe 5, a water inlet pipe and a water outlet pipe 7. The first box door 3, the second box door 4, and the third box door 6 are hinged to the box cover 2 and can be opened upward by 120 degrees in the vertical direction. There is a culvert leading to the ground above the first box door 3, the second box door 4, and the third box door 6. A sealing device, preferably a rubber sealing ring, is provided at the connection between the box door and the box cover; when the box door is closed, the buried box body 1 and the box cover form a box body with good sealing performance. A vertically arranged ventilation pipe 6 is provided on the box cover 2. Both the buried box body and the box cover are made of glass fiber reinforced cement, with good structural strength and sealing performance.

[0032] Inside the buried box body 1, there are a transformer 9, a low-voltage cabinet 10, a high-voltage cabinet 11, an aluminum alloy ladder 12, an intelligent fire-fighting device 8, an exhaust fan, a heat dissipation device, and a monitoring device, as Figure 2 shown. Among them, the transformer 9 is arranged on the left side of the buried box body 1. Above the transformer 9 is the first box door 3. The transformer 9 is separated from other positions in the box body by a wire mesh to ensure a safe distance for maintenance personnel. The aluminum alloy ladder 12 is arranged on the other side opposite to the transformer 9, and above it is the third box door 6. An operation passage with a width of 1.2 meters is formed between the aluminum alloy ladder 12 and the transformer 9 to meet the requirements of daily installation and maintenance. The low-voltage cabinet 10, the high-voltage cabinet 11, and the control cabinet are arranged on the upper and lower sides of the operation passage respectively. Above the high-voltage cabinet 11 is the second box door 4.

[0033] The ventilation pipe 5 is connected to the exhaust fan in the buried box body to ensure sufficient air circulation in the box body.

[0034] The monitoring device includes a monitoring sensor and an intelligent gateway. The monitoring sensor monitors the working status of each distribution cabinet body and the transformer and sends the data to the intelligent gateway. The intelligent gateway sends the working status data to the management server through 4G and 5G networks. When the gas fire extinguishing equipment is started, the monitoring device generates a synchronous alarm and sends it to the management server.

[0035] For daily operation and maintenance, the operator can open the third box door 6 through the culvert and enter the inside of the box for operation. If equipment replacement is required, the operator can open the first box door 3 to replace the transformer or open the second box door 4 to replace the distribution cabinet according to the actual situation.

[0036] Embodiment 2

[0037] In this embodiment, an intelligent fire-fighting device 8 is arranged in the buried box body 1, at a position close to the transformer on the left side of the box body, including a sensor, a controller and a gas fire extinguishing device. The sensor and the gas fire extinguishing device are connected to the controller. The sensor is used to detect fire signals such as temperature and smoke in the buried box body. The controller judges the detection data of the sensor and starts the gas fire extinguishing device according to preset conditions. The controller can be implemented by a single-chip microcomputer, preferably the high-performance STM32H series single-chip microcomputer. The temperature sensor is a digital temperature sensor and is electrically connected to the input end of the controller through a serial bus. The smoke sensor can be an optoelectronic smoke sensor and is electrically connected to the input end of the controller through a serial bus.

[0038] Embodiment 3

[0039] In this embodiment, an emergency drainage device is arranged in the buried box body 1, including a liquid level sensor, a drainage water pump and a drainage pipe. The liquid level sensor and the drainage water pump are electrically connected to the controller of the intelligent fire-fighting device. One end of the drainage pipe is connected to the drainage water pump, and the other end is connected to the drainage pipe near the box transformer setting area. The controller controls the drainage water pump according to the detection data of the liquid level sensor; when the drainage water pump is started, the monitoring device generates a synchronous alarm and sends it to the management server.

[0040] Embodiment 4

[0041] In this embodiment, a vertically arranged water pipe 7 is provided on the box cover. The water pipe 7 includes a water inlet pipe and a water outlet pipe. A heat dissipation device is arranged in the buried box body 1, which includes a heat dissipation water pump and a heat dissipation pipe network. Grooves are evenly distributed on the top and around the inner wall of the buried box body 1, and the heat dissipation pipe network is arranged in the grooves for heat exchange with the air in the buried box body. The heat dissipation pipe network is respectively connected to the heat dissipation water pump, one end of the water inlet pipe and one end of the water outlet pipe. The other ends of the water inlet pipe and the water outlet pipe can be connected to one or more of natural water sources, landscape water sources, and fire fighting pools near the box transformer setting area according to actual situations. The water in the heat dissipation pipe network absorbs the heat in the box body and circulates through the heat dissipation water pump to discharge the heat in the box body.

[0042] The above are only the embodiments of the present utility model. The present utility model is not limited to the fields involved in this embodiment case. Common knowledge such as the specific structures and characteristics known in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. An underground intelligent pre-installed box-type substation, comprising an underground box body and a box cover, characterized in that: The underground box is arranged as a whole under the ground, and the opening of the underground box is arranged upward. A power distribution cabinet, a control cabinet, an exhaust fan, a heat dissipation device and a monitoring device are arranged in the underground box. The box cover is arranged on the upper part of the underground box and is fixedly connected to the underground box. A first box door, a second box door, a third box door and a ventilation pipe are arranged on the box cover. The first box door, the second box door and the third box door are hinged to the box cover and can be opened 120 degrees upward in the vertical direction. A culvert leading to the ground is arranged above the first box door, the second box door and the third box door, and a sealing device is provided at the connection between the box door and the box cover; the ventilation pipe is arranged vertically, and the ventilation pipe is connected to the exhaust fan in the underground box; the monitoring device includes a monitoring sensor and an intelligent gateway. The monitoring sensor monitors the working status of the power distribution cabinet and sends the data to the intelligent gateway. The intelligent gateway sends the working status data to the management server through the 4G and 5G networks.

2. The underground intelligent prefabricated box-type substation according to claim 1 is characterized in that: The underground box is provided with an intelligent fire-fighting device, including a sensor, a controller and a gas fire-extinguishing device, wherein the sensor and the gas fire-extinguishing device are connected to the controller, the sensor is used to detect the temperature, smoke and fire signals in the underground box, the controller judges the detection data of the sensor and starts the gas fire-extinguishing device according to preset conditions; when the gas fire-extinguishing device is started, the monitoring device generates a synchronous alarm and sends it to the management server.

3. The underground intelligent prefabricated box-type substation according to claim 2 is characterized in that: The buried box is also provided with an emergency drainage device, including a liquid level sensor, a drainage pump and a drainage pipe. The liquid level sensor is connected to the controller of the intelligent fire-fighting device, the drainage pump is electrically connected to the controller, one end of the drainage pipe is connected to the drainage pump, and the other end is connected to the drainage pipe near the box transformer setting area. The controller controls the drainage pump according to the detection data of the liquid level sensor; when the drainage pump is started, the monitoring device generates a synchronous alarm and sends it to the management server.

4. The underground intelligent prefabricated box-type substation according to claim 3 is characterized in that: The box cover is provided with a vertical water inlet pipe and a water outlet pipe, the heat dissipation device includes a heat dissipation water pump and a heat dissipation pipe network, the heat dissipation pipe network is evenly arranged on the inner wall of the buried box body, and is used for heat exchange with the air in the buried box body, the heat dissipation pipe network is respectively connected to the heat dissipation water pump, one end of the water inlet pipe and one end of the water outlet pipe, and the other ends of the water inlet pipe and the water outlet pipe are connected to one or more natural water sources, landscape water sources, and fire water pools near the box transformer installation area.

5. The underground intelligent prefabricated box-type substation according to claim 1 is characterized in that: The underground box body and the box cover are both made of glass fiber reinforced cement.

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