CN204760811U - A intelligence is converged and is controlled cabinet for intelligent substation - Google Patents

Abstract

The utility model discloses an intelligent centralized control cabinet for an intelligent substation, which comprises a cabinet body and an adjusting device for adjusting the temperature and humidity inside the cabinet. The regulating device includes an independently operated exhaust and heating device, and the exhaust device includes an exhaust pipe with a flap member and an exhaust fan. When the outdoor is dry and high temperature, adjust the temperature and humidity in the cabinet through the exhaust device to meet the use requirements. When the exhaust fan exhausts upwards, the two semicircular plates of the flap member rotate upwards and open at the same time, and the hot and humid air in the cabinet is discharged outwards. It is in a negative pressure state, so that the cool air outside the cabinet automatically enters the cabinet. When the outdoor air humidity is high, close the flap member to release the negative pressure in the cabinet, so that a closed space is formed inside the cabinet to avoid humidity increase; and then turn on the heating resistor to raise the temperature inside the cabinet to a temperature that avoids condensation. The two devices operate independently under different environmental conditions, and the operating time is relatively shortened. While ensuring the temperature and humidity requirements in the cabinet, the operating cost is saved and the maintenance cost is reduced.

Description

Smart control cabinet for smart substation

technical field

The utility model relates to an intelligent integrated control cabinet, in particular to an intelligent integrated control cabinet matched in an intelligent substation.

Background technique

With the construction of the smart grid, there are more and more smart control cabinets in the power system, and the smart control cabinet is an online monitoring system developed by using advanced detection technology, control technology, communication technology and closed combination electrical appliances. The system cabinet generally uses a programmable logic controller to monitor and control the closed combined electrical appliances online. Now there are more and more internal protection and control components in the smart control cabinet, and the heat generated is increasing. The smart control cabinet has higher and higher requirements for the ambient temperature and humidity. When the intelligent central control cabinet is placed in outdoor operation, the outdoor high temperature makes the components in the intelligent central control cabinet prone to problems such as panel blur, device crash, and component operation instability, which will seriously affect the safe operation of the main transformer circuit; outdoor air humidity When it is relatively large, condensation will occur if the humidity in the intelligent control cabinet is too high, which will lead to equipment corrosion, secondary equipment grounding, short circuit and other problems, and even cause circuit breaker malfunction and power outage accidents.

In order to meet the needs of the development of the power grid, most smart substations have carried out ventilation and cooling transformation on the smart central control cabinet. In the case of high outdoor air humidity, mildew and rust often appear in the cabinet due to condensation; some install air conditioners in the cabinet, but this method has high investment and maintenance costs, and the air conditioner has frequent failures after long-term operation in high-temperature and harsh environments. If it cannot be maintained in time, it is difficult to meet the safety needs of the site.

Utility model content

The purpose of the utility model is to provide an intelligent collection and control cabinet that can automatically adjust the temperature and humidity inside the cabinet according to different environmental conditions, and can meet the requirements of use and has low investment and maintenance costs.

The utility model discloses an intelligent centralized control cabinet for an intelligent substation, which comprises a cabinet body and an adjusting device for adjusting the temperature and humidity inside the cabinet. The regulating device includes an independently operated exhaust device and a heating device, and the exhaust device includes an exhaust pipe with a flap member and an exhaust fan providing exhaust power.

The exhaust fan adopts an axial flow fan, which is installed and fixed under the flap member in the exhaust pipe.

The exhaust pipe adopts a circular air pipe, and its upper end is sleeved with a dust cover, and the dust cover includes a circular connection sleeve and a filter screen connected to its upper port.

The flap member includes two semicircular plates, a torsion spring and a rotating shaft. Both ends of the diameter sides of the two semicircular plates in the length direction are staggered and rotatably socketed on the rotating shaft. The middle section of the rotating shaft is covered with a torsion The two ends of the torsion spring press the upper sides of the two semicircular plates respectively, and the two ends of the rotating shaft are rotatably fixed on the pipe wall of the exhaust pipe, and the fixed position is at the position where the exhaust fan is installed. Above, the radius of the half-circle matches the radius of the exhaust duct.

Corresponding to the lower side of the semicircular plate, there is a baffle for horizontally limiting the two semicircular plates on the pipe wall of the exhaust pipe.

The cabinet body is a cuboid-shaped closed cabinet body, and an exhaust hole matching the diameter of the exhaust pipe is opened on the top plate, and an air inlet hole and a cable hole are opened on the bottom plate. A protective cover is connected, support columns are arranged at four corners of the bottom, and movable doors are arranged at the front and rear.

The lower end of the exhaust pipe is welded to the exhaust hole.

The shape of the protective cover is umbrella-shaped, and its maximum section corresponds to the middle position of the height of the exhaust pipe.

There are two air inlet holes in the shape of strips, symmetrically arranged on both sides of the cabinet bottom plate in the length direction, and a dust shield is connected to the air inlet hole, and the dust shield has a shape consistent with the shape of the air inlet hole. The outside of the frame is connected with a filter screen, and the inside of the frame is connected with a vertical shutter that can be opened upwards, and the frame is welded to the wall of the air inlet hole.

The heating device is installed on the bottom of the cabinet using a moisture-removing resistor and a heating resistor.

The utility model has an exhaust device and a heating device that operate independently. When the outdoor temperature is high in summer, the temperature and humidity in the cabinet are adjusted by the exhaust device to meet the requirements of use: the exhaust fan is controlled to work upward to exhaust the wind, and the upward wind force makes the flap member The two semicircular plates rotate upwards and open at the same time, and the hot and humid air in the cabinet is discharged from the exhaust pipe. At this time, the cabinet is in a negative pressure state, and the vertical louver at the air inlet at the bottom of the cabinet automatically opens upwards, so that the cool air outside the cabinet automatically enters the cabinet. With the operation of the exhaust fan, the air in the cabinet circulates continuously, and The heat is continuously taken away to ensure the stable operation of the electronic equipment in the cabinet, prolong the service life of the electronic equipment, and improve the operation reliability of the substation and the power grid.

In winter and spring, when the outdoor air humidity is high after rain, first control the exhaust fan to stop working, the flap is closed under the restoring force of the torsion spring, the negative pressure in the cabinet is released, and the self-hanging shutters at the bottom of the cabinet are naturally drooped and closed. It plays the role of blocking the air flow, so that the inside of the cabinet forms a closed space to avoid the increase of humidity; then, the moisture-removing and heating resistors at the bottom of the cabinet are energized to generate heat, and the temperature inside the cabinet rises to avoid condensation, so that the temperature inside the cabinet , Humidity to meet the use requirements.

The temperature and humidity sensors can be installed near the top exhaust pipe in the cabinet, and the data collected by the temperature and humidity can be automatically switched between the two states after being judged by the controller.

To sum up, the utility model can operate independently of the two devices under different environmental conditions, and the operating time is relatively shortened. While ensuring the temperature and humidity requirements in the cabinet, the operating cost is saved, and the maintenance cost is also reduced.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of an exploded structure of the utility model.

FIG. 3 is an enlarged structural schematic diagram of the flap in FIG. 2 .

Detailed ways

As shown in Figures 1 to 3, this embodiment discloses a smart control cabinet for smart substations, which mainly includes a cabinet body 1, an exhaust pipe 2, an exhaust fan 3, a flap member 4, and a dust cover 5 , Dust shield 6, damp resistance 7a, heating resistance 7b, protective cover 8. The exhaust pipe 2, the exhaust fan 3, the flap member 4 and the dust cover 5 form an exhaust device. The exhaust pipe 2 adopts a circular air pipe, and the exhaust fan 3 adopts a high-power silent axial flow fan to be fixed in the exhaust pipe 2. The flap member 4 comprises two semicircular plates 41, a torsion spring 42 and a rotating shaft 42. The two semicircular plates 41 are staggered and rotatably socketed on the rotating shaft 43 in the lengthwise direction of the sides, and the middle of the rotating shaft 43 The section is covered with a torsion spring 42, and the two ends of the torsion spring 42 press the upper sides of the two semicircular plates 41 respectively, and the two ends of the rotating shaft 43 are rotatably fixed on the pipe wall of the exhaust pipe 2, and the fixed position Located above the installation position of the exhaust fan 3 , the radius of the semicircular plate 41 matches the radius of the exhaust pipe 2 .

In order to make the two semi-circular plates 41 of the flap member 4 in a horizontal state when the exhaust fan 3 is not working, dampers 9 are provided on the pipe wall of the exhaust pipe 2 corresponding to the lower sides of the two semi-circular plates 41 .

The dust cover 5 includes a circular connecting sleeve 51 and a circular filter 52 connected to the upper port thereof, so that the connecting sleeve 51 is inserted into the upper port of the exhaust pipe 2 and externally connected. The cabinet body 1 is a cuboid closed cabinet body, and its top plate 11 is provided with an exhaust hole matching the diameter of the exhaust pipe 2, and the bottom plate 12 is provided with an air inlet hole and a cable hole. There are two air inlet holes, which are strip-shaped, symmetrically arranged on both sides in the length direction of the bottom plate 12 of the cabinet body 1, and the cable hole is located between the two air inlet holes. Dodge door 13 is arranged on the front and back of cabinet body 1. The lower end of the exhaust pipe 2 is welded to the exhaust hole on the top plate.

The dust shield 6 includes a frame 61 consistent with the shape of the air inlet, the inner side of the frame 61 is connected with a vertical louver 62 that can be opened upwards, and the outer side is connected with a filter screen, and the frame 61 is welded with the wall of the air inlet.

The shape of the protective cover 8 is umbrella-shaped, and is welded on the top plate of the cabinet body 1 through pillars. Ensure that the maximum cross-section of the protective cover 8 corresponds to the middle position of the height of the exhaust pipe 2, so as to prevent rainwater from floating into the cabinet body 1 from the exhaust pipe 2 in windy and rainy days. The height of the protective cover 8 is determined to ensure smooth loading and unloading The dust cover 5 at the upper end of the exhaust pipe 2 is as the criterion. Protective cover 8 also has the effect of heat insulation layer, prevents the top of cabinet body 1 from being exposed to direct sunlight, reduces the temperature in the cabinet.

In order to prevent the internal temperature of the cabinet from rising sharply due to sunlight, paint reflective or radiant heat-insulating paint on the top and side of the cabinet, the outer wall of the protective cover and the exhaust pipe.

In order to facilitate the air intake in the cabinet, support columns 10 are set at the lower end of the cabinet so that the cabinet has a certain height from the ground.

In order to prevent dust and small animals from entering the cabinet, the filter screen of the dust cover and the dust cover should use a mesh cloth with a larger mesh number.

In order to heat the air in the cabinet as quickly as possible by the tide driving and heating resistors, install the moisture driving resistors and heating resistors at the bottom of the cabinet.

A temperature and humidity sensor is installed near the top exhaust pipe in the cabinet, and the temperature and humidity detection data are judged by the temperature and humidity controller to realize automatic switching between the two states.

The specific working process is as follows: When the temperature and humidity sensor detects that the temperature in the cabinet is higher than 40°C, the temperature and humidity controller will automatically start the exhaust fan to work, and the upward exhaust will make the two semicircular plates of the flap member rotate upwards and open at the same time At this time, the interior of the smart huikong cabinet is in a negative pressure state, and the vertical louver at the air inlet hole on the bottom plate of the cabinet automatically opens upwards, and the cool outside air enters the cabinet. After the heat is taken away by the smart electronic equipment, the hot and humid air flows out The exhaust pipe on the top of the cabinet is discharged, thereby reducing the temperature inside the cabinet and ensuring the stable operation of smart electronic devices. When the temperature is lower than 35°C, the temperature and humidity controller will automatically turn off the exhaust fan. At this time, the flap in the exhaust pipe returns to the closed state under the restoring force of the torsion spring. Automatic drooping and closing without negative pressure. When the temperature and humidity sensor detects that the temperature in the cabinet is lower than 5°C or the humidity exceeds 80%, the temperature and humidity controller will automatically start to drive the tide, and the heating resistor will heat the air in the cabinet to prevent condensation. Or when the humidity is lower than 70%, the temperature and humidity controller will automatically disconnect the tide drive and heating resistor power supply, and stop heating.

Through on-site testing, the utility model can ensure that the temperature in the cabinet rises appropriately without condensation in winter, spring, and when the outdoor air humidity is high after rain, and at the same time meet the temperature requirements of the intelligent central control cabinet. When the outdoor temperature is very high in summer, the utility model can make the air flow into the air from the bottom and the air out from the top, and realize that the temperature inside the cabinet is more than 10°C lower than the outdoor direct sunlight temperature; the expected design goal is fully achieved.

Claims (10)

1. An intelligent central control cabinet for an intelligent substation, comprising a cabinet body and an adjusting device for regulating temperature and humidity inside the cabinet, characterized in that: the adjusting device includes an independently operated exhaust device and a heating device, and the exhaust device It includes an exhaust pipe with a flap member and an exhaust fan that provides exhaust power. 2. The intelligent central control cabinet for intelligent substation according to claim 1, wherein the exhaust fan is an axial flow fan installed and fixed under the flap member in the exhaust pipe. 3. The smart central control cabinet for smart substations as claimed in claim 2, characterized in that: the exhaust pipe adopts a circular air pipe, the upper end of which is sleeved with a dust cover, and the dust cover includes a circular Connect the sleeve and the filter screen connected to the upper port. 4. The intelligent central control cabinet for intelligent substation as claimed in claim 2, characterized in that: the flap member comprises two semicircular plates, a torsion spring and a rotating shaft, and the diameter sides of the two semicircular plates are two in length direction. The ends are staggered and rotatably socketed on the rotating shaft. The middle section of the rotating shaft is covered with a torsion spring. The two ends of the torsion spring respectively press the upper sides of the two semicircular plates, and the two ends of the rotating shaft can be rotated. fixed on the pipe wall of the exhaust pipe, the fixed position is above the installation position of the exhaust fan, and the radius of the semicircular plate matches the radius of the exhaust pipe. 5. The intelligent central control cabinet for intelligent substation as claimed in claim 4, characterized in that: the pipe wall of the exhaust pipe corresponds to the lower side of the semicircular plate for making the two semicircular plates horizontal Limit stopper. 6. The intelligent central control cabinet for intelligent substation as claimed in claim 4, characterized in that: the cabinet is a cuboid-shaped closed cabinet, and the top plate is provided with a pipe diameter matching the exhaust pipe. There are air inlet holes and cable holes on the bottom plate, the top plate of the cabinet is connected with a protective cover through pillars, support pillars are set at the four corners of the bottom, and movable doors are located at the front and back. 7. The smart control cabinet for smart substation according to claim 6, characterized in that: the lower end of the exhaust pipe is welded to the exhaust hole. 8. The intelligent central control cabinet for intelligent substation according to claim 6, characterized in that: the shape of the protective cover is umbrella-shaped, and its maximum cross-section corresponds to the middle position of the height of the exhaust pipe. 9. The smart control cabinet for smart substations as claimed in claim 6, characterized in that: there are two air inlet holes in the shape of strips, symmetrically arranged on both sides of the cabinet bottom plate in the length direction , the air inlet is connected with a dust cover, the dust cover includes a frame consistent with the shape of the air inlet, the outer side of the frame is connected with a filter screen, and the inner side is connected with a vertical shutter that can be opened upwards, the frame and the air inlet Hole wall welding. 10. The smart control cabinet for smart substation according to claim 1, characterized in that: the heating device adopts a damp driving resistor and a heating resistor, and is installed at the bottom of the cabinet.