Ventilation assembly and high-voltage switch
By setting a ventilation fan, heating box, fan, heater and temperature-controlled switch in the high-voltage switch room, the problem of SF6 liquefaction in low-temperature environments is solved, ensuring the safety and stability of the high-voltage switch.
Patent Information
- Application Number
- CN202411498432.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2024-12-31
AI Technical Summary
The existing high-voltage switch room ventilation device cannot automatically control the temperature in a low temperature environment, resulting in the liquidation of SF6 gas, destroying the insulation, and affecting the safety of high-voltage switches.
A ventilation component is designed, including a ventilation fan, a heating box, a fan, a heater and a temperature-controlled switch. The temperature is monitored through the temperature-controlled switch, and the ventilation fan and heater are started or turned off to ensure that the gas does not liquefy and maintain the stability of the high-voltage switch chamber. sex.
It effectively avoids the liquefaction of SF6, ensures the safety and stability of high-voltage switches, especially in cold areas to effectively ventilate and heat.
Smart Images
Figure CN119231351A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of ventilation technology, and in particular to a ventilation component and a high-voltage switch. Background Art
[0002] High-voltage switchgear refers to a switch used for power generation, transmission, distribution or power conversion in power systems. It is usually installed in a high-voltage switchgear. The switchgear has functions such as overhead incoming and outgoing lines, cable incoming and outgoing lines, and busbar connection. It is mainly suitable for various places such as power plants, petrochemicals, metallurgical steel rolling, light industry and textiles, residential communities, high-rise buildings, etc. Most of the existing high-voltage switches use SF6 gas as the insulating medium. SF6 has good insulation properties. In order to ensure the personal safety of people entering the SF6 high-voltage switch room of the substation, it is stipulated that the SF6 high-voltage switch room must be ventilated for more than fifteen minutes in advance.
[0003] According to the search, the Chinese patent literature, announcement number: CN219304298U discloses a high-voltage switch room ventilation device, which raises and lowers the rack through a transmission component, and the driven gear rotates under the drive of the rack, and further the shaft drives the air guide plate to rotate, which is beneficial to the up and down sweeping of air during air input, and then beneficial to the ventilation inside the high-voltage switch room, improves the ventilation effect, and avoids safety hazards caused by poor indoor ventilation. However, when the ambient temperature is minus 30°C, SF6 begins to liquefy, which will destroy its insulation. Therefore, long-term ventilation will affect the safety of the high-voltage switch, especially in outdoor areas in Northeast my country, where the temperature is as low as minus 40°C.
[0004] Therefore, with regard to the above-mentioned currently existing high-voltage switch room ventilation device, it is not possible to automatically perform temperature control according to the actual temperature. When the temperature is as low as minus 30°C, SF6 will begin to liquefy, and its insulation will be destroyed, thereby affecting the safety of the high-voltage switch. A ventilation component and a high-voltage switch can be designed. By setting a ventilation fan, a heating box, a blower, a heater, an air outlet pipe and a temperature control switch, when the installation cabinet needs to be ventilated in cold areas, the ventilation fan is started, and the ventilation fan can thus ventilate the interior of the installation cabinet. When the temperature control switch detects that the internal temperature of the installation cabinet is lower than the preset minimum temperature threshold, the ventilation fan will be controlled to be turned off, and the blower and the heater will be controlled to start. The blower blows the gas downward, and the gas flows into the air outlet pipe after being heated by the heater, and finally flows into the installation cabinet through the air outlet, thereby heating and heating the interior of the installation cabinet, avoiding the liquefaction of SF, and ensuring the stability of the high-voltage switch body inside the installation cabinet. Summary of the invention
[0005] In order to overcome the problem that the existing high-voltage switch room ventilation device cannot automatically control the temperature according to the actual temperature, when the temperature drops to minus 30°C, SF6 will begin to liquefy and its insulation will be destroyed, thus affecting the safety of the high-voltage switch.
[0006] The technical solution of the present invention is: a ventilation component, including an installation cabinet; an installation ring plate is opened on the right side of the interior of the installation cabinet, filter screens are connected to the left and right sides of the interior of the installation ring plate, and ventilation fans are installed between the filter screens on the left and right sides; a heating box is connected to the left side of the top of the installation cabinet, an air inlet is opened on the top of the heating box, a fan is arranged inside the air inlet, a connecting rod is connected to the outside of the fan, and the other end of the connecting rod is connected to the inner side wall of the air inlet, installation grooves 1 are opened on the left and right sides of the interior of the heating box, installation grooves 2 are opened on the left and right sides of the interior bottom of the heating box, heaters are installed in the installation grooves 1 and 2, an air outlet pipe is opened on the inner bottom of the heating box, the air outlet pipe is connected to the inner rear side of the installation cabinet, the other end of the air outlet pipe is arranged at the inner lower end of the installation cabinet, air outlets 1 are opened equidistantly on the front of the air outlet pipe, a temperature control switch is installed on the right side of the inner top of the installation cabinet, and the ventilation fan, the fan and the heater are electrically connected to the temperature control switch.
[0007] Preferably, the temperature control switch can monitor the temperature inside the installation cabinet. When the interior of the installation cabinet needs to be ventilated in cold areas, the ventilation fan is started, so that the ventilation fan can ventilate the interior of the installation cabinet. At this time, the filter screen can filter the dust. When the temperature control switch detects that the temperature inside the installation cabinet is lower than the preset minimum temperature threshold, the temperature control switch controls the ventilation fan to turn off, and controls the fan and heater to start. The fan can blow the gas downward. After being heated by the heater, the gas flows into the exhaust pipe and finally enters the installation cabinet through the exhaust port 1, thereby heating the interior of the installation cabinet.
[0008] Preferably, a second filter is connected to the interior of the air inlet, and the second filter is located at the upper end of the fan.
[0009] Preferably, a heat-insulating layer is provided on the outside of the heating box, and the heat-insulating layer is provided around the heating box.
[0010] Preferably, the upper ends of the left and right sides of the air outlet pipe are connected with connecting branch pipes, the connecting branch pipes are connected to the left and right ends of the inner rear side of the installation cabinet, and two air outlets are equidistantly provided on the front of the connecting branch pipes.
[0011] Preferably, both front and rear ends of the right side of the installation cabinet are connected with installation plates, and a shielding plate is rotatably connected between the front and rear installation plates.
[0012] Preferably, a support plate is connected to the upper right end of the interior of the installation cabinet, and hinged seats are connected to both the front and rear ends of the top left side of the support plate.
[0013] Preferably, an electric push rod is hinged inside the articulated seat one, and the electric push rod is electrically connected to the temperature control switch. Clearance holes are provided at the front and rear ends of the right side of the installation cabinet, and the output end of the electric push rod is hinged to the articulated seat two through the clearance holes, and the articulated seat two is connected to the lower left end of the baffle plate.
[0014] Preferably, a sealing gasket is connected to the left side of the shielding plate, and the sealing gasket is located on the outer side of the second hinge seat.
[0015] A high-voltage switch of a ventilation assembly comprises the ventilation assembly as described above, and also comprises a mounting frame, wherein four mounting frames are provided and the four mounting frames are located on the inner left side of the mounting cabinet.
[0016] Preferably, the top of the mounting frame is connected to the inner top of the mounting cabinet, the bottom of the mounting frame is connected to the inner bottom of the mounting cabinet, and the high-voltage switch body is installed between the four mounting frames.
[0017] The beneficial effects of the present invention are as follows: by arranging a ventilation fan, a heating box, a blower, a heater, an air outlet pipe and a temperature control switch, when the installation cabinet needs to be ventilated in cold areas, the ventilation fan is started, and the ventilation fan can ventilate the interior of the installation cabinet. When the temperature control switch detects that the internal temperature of the installation cabinet is lower than the preset minimum temperature threshold, the ventilation fan will be controlled to be turned off, and the blower and the heater will be controlled to start. The blower will blow the gas downward, and the gas will flow into the air outlet pipe after being heated by the heater, and finally flow into the installation cabinet through the air outlet, thereby heating and heating the interior of the installation cabinet, thereby ensuring the stability of the interior of the installation cabinet. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a ventilation component and a high-voltage switch of the present invention; Figure 2 Shown is a three-dimensional cross-sectional schematic diagram of a ventilation assembly and a high-voltage switch mounting ring plate of the present invention; Figure 3 Shown is a schematic diagram of the internal three-dimensional structure of a ventilation assembly and a high-voltage switch heating box of the present invention; Figure 4 Shown is a schematic diagram of the internal three-dimensional structure of a ventilation component and a high-voltage switch of the present invention; Figure 5 Shown is a schematic diagram of the three-dimensional structure of a ventilation assembly and a high-voltage switch outlet pipe and a connecting branch pipe of the present invention; Figure 6 Shown is a schematic diagram of the three-dimensional structure of a ventilation assembly and the other side of the internal high-voltage switch of the present invention; Figure 7Shown is a schematic diagram of the three-dimensional structure of a ventilation component and a high-voltage switch support plate of the present invention.
[0019] Explanation of the reference numerals in the accompanying drawings: 1. Installation cabinet; 2. Installation ring plate; 3. Ventilation fan; 4. Filter screen 1; 5. Heating box; 6. Air inlet; 7. Connecting rod; 8. Filter screen 2; 9. Fan; 10. Installation slot 1; 11. Installation slot 2; 12. Heater; 13. Insulation layer; 14. Exhaust pipe; 15. Exhaust port 1; 16. Connecting branch pipe; 17. Exhaust port 2; 18. Installation plate; 19. Shielding plate; 20. Support plate; 21. Articulated seat 1; 22. Electric push rod; 23. Articulated seat 2; 24. Sealing pad; 25. Make way hole; 26. Temperature control switch; 27. Mounting bracket; 28. High-voltage switch body. DETAILED DESCRIPTION
[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] See also Figure 1-Figure 7 The present invention provides an embodiment: a ventilation component, including an installation cabinet 1; an installation ring plate 2 is opened on the right side of the interior of the installation cabinet 1, and a filter screen 4 is connected to the left and right sides of the interior of the installation ring plate 2, and a ventilation fan 3 is installed between the left and right filter screens 4, a heating box 5 is connected to the left side of the top of the installation cabinet 1, an air inlet 6 is opened on the top of the heating box 5, a fan 9 is arranged inside the air inlet 6, a connecting rod 7 is connected to the outside of the fan 9, and the other end of the connecting rod 7 is connected to the inner side wall of the air inlet 6, an installation groove 10 is opened on the left and right sides of the interior of the heating box 5, an installation groove 2 11 is opened on the left and right sides of the interior bottom of the heating box 5, and a heater 12 is installed in the installation groove 10 and the installation groove 2 11, an air outlet pipe 14 is opened at the bottom of the interior of the heating box 5, the air outlet pipe 14 is connected to the rear side of the interior of the installation cabinet 1, and the other end of the air outlet pipe 14 is arranged at the lower end of the interior of the installation cabinet 1, and the air outlet pipe The front of 14 is provided with air outlets 15 at equal intervals, and a temperature control switch 26 is installed on the right side of the top of the interior of the installation cabinet 1. The ventilation fan 3, the blower 9 and the heater 12 are electrically connected to the temperature control switch 26. The temperature control switch 26 can monitor the temperature inside the installation cabinet 1. When the interior of the installation cabinet 1 needs to be ventilated in cold areas, the ventilation fan 3 is started, and the ventilation fan 3 can ventilate the interior of the installation cabinet 1. At this time, the filter 4 can filter the dust. When the temperature control switch 26 detects that the temperature inside the installation cabinet 1 is lower than the preset minimum temperature threshold, the temperature control switch 26 controls the ventilation fan 3 to turn off, controls the blower 9 and the heater 12 to start, and the blower 9 can blow the gas downward. After being heated by the heater 12, the gas flows into the air outlet pipe 14 and finally enters the installation cabinet 1 through the air outlet 15, thereby heating and heating the interior of the installation cabinet 1.
[0022] See also Figure 3-Figure 5 In this embodiment, the inside of the air inlet 6 is connected with a filter screen 2 8, and the filter screen 2 8 is located at the upper end of the fan 9. The outside of the heating box 5 is provided with a heat preservation layer 13, and the heat preservation layer 13 is arranged around the heating box 5. The upper ends of the left and right sides of the air outlet pipe 14 are connected with connecting branch pipes 16, and the connecting branch pipes 16 are connected to the left and right ends of the rear side of the inside of the installation cabinet 1. The front of the connecting branch pipe 16 is equidistantly provided with air outlets 17. The setting of the filter screen 2 8 can block the dust from the outside, thereby avoiding the influence of dust on the internal components of the installation cabinet 1. The setting of the heat preservation layer 13 can keep the air heated inside the heating box 5 warm. The setting of the connecting branch pipe 16 can increase the air outlet area. The hot air can flow to the inside of the installation cabinet 1 through the air outlet 2 17, thereby improving the heating efficiency inside the installation cabinet 1.
[0023] See also Figure 1-Figure 7 In this embodiment, both front and rear ends of the right side of the installation cabinet 1 are connected with installation plates 18, and a shielding plate 19 is rotatably connected between the front and rear installation plates 18. The upper right end of the interior of the installation cabinet 1 is connected with a support plate 20, and both front and rear ends of the top left side of the support plate 20 are connected with a hinge seat 1 21. The interior of the hinge seat 1 21 is hinged with an electric push rod 22, and the electric push rod 22 is electrically connected to the temperature control switch 26. The front and rear ends of the right side of the installation cabinet 1 are provided with a clearance hole 25, and the output end of the electric push rod 22 is hinged with a hinge seat 23 through the clearance hole 25, and the hinge seat 23 is connected to the lower left end of the shielding plate 19. A sealing gasket 24 is connected to the left side of the baffle plate 19, and the sealing gasket 24 is located on the outer side of the hinge seat 23. The setting of the mounting plate 18 facilitates the installation of the baffle plate 19, so that the baffle plate 19 can rotate on the mounting plate 18. When the internal temperature of the installation cabinet 1 is too low, the temperature control switch 26 can control the start of the electric push rod 22, and the output end of the electric push rod 22 can drive the lower end of the baffle plate 19 to rotate, so that the baffle plate 19 can play a shielding role for the installation ring plate 2. At this time, the sealing gasket 24 can fit together with the right side of the installation cabinet 1, thereby improving the shielding effect of the baffle plate 19 and facilitating the insulation of the installation cabinet 1.
[0024] A high-voltage switch of a ventilation assembly includes the ventilation assembly as described above, and also includes a mounting frame 27. Four mounting frames 27 are provided. The four mounting frames 27 are located on the left side inside the installation cabinet 1. The top of the mounting frame 27 is connected to the top of the installation cabinet 1, and the bottom of the mounting frame 27 is connected to the bottom of the installation cabinet 1. A high-voltage switch body 28 is installed between the four mounting frames 27. The setting of the mounting frame 27 facilitates the installation of the high-voltage switch body 28. The high-voltage switch body 28 is used for power generation, transmission, distribution or power conversion in the power system, and is usually installed in the installation cabinet 1 to protect and install the high-voltage switch body 28.
[0025] When working, the temperature control switch 26 can monitor the temperature inside the installation cabinet 1. When the interior of the installation cabinet 1 needs to be ventilated in cold areas, the ventilation fan 3 is started, and the ventilation fan 3 can ventilate the interior of the installation cabinet 1. When the temperature control switch 26 detects that the temperature inside the installation cabinet 1 is lower than the preset minimum temperature threshold, the temperature control switch 26 controls the ventilation fan 3 to turn off, controls the electric push rod 22, the fan 9 and the heater 12 to start, and the output end of the electric push rod 22 can drive the lower end of the shielding plate 19 to rotate, and the shielding plate 19 Thereby, it can play a shielding role for the installation ring plate 2. At this time, the sealing gasket 24 can fit together with the right side of the installation cabinet 1, so as to improve the shielding effect of the baffle plate 19, which is convenient for the insulation of the installation cabinet 1. The fan 9 can blow the gas downward. After being heated by the heater 12, the gas flows into the outlet pipe 14 and the connecting branch pipe 16, and finally enters the installation cabinet 1 through the outlet port 1 15 and the outlet port 2 17, so as to heat the interior of the installation cabinet 1, avoid the liquefaction of SF6, and ensure the stability of the interior of the installation cabinet 1.
[0026] Through the above steps, by setting the ventilation fan 3, the heating box 5, the fan 9, the heater 12, the air outlet pipe 14 and the temperature control switch 26, when the installation cabinet 1 needs to be ventilated in cold areas, the ventilation fan 3 is started, and the ventilation fan 3 can ventilate the interior of the installation cabinet 1. When the temperature control switch 26 detects that the internal temperature of the installation cabinet 1 is lower than the preset minimum temperature threshold, the ventilation fan 3 will be controlled to be closed, and the fan 9 and the heater 12 will be controlled to start. The fan 9 blows the gas downward, and the gas flows into the air outlet pipe 14 after being heated by the heater 12, and finally flows into the installation cabinet 1 through the air outlet 15, so that the interior of the installation cabinet 1 can be heated and heated, and the liquefaction of SF6 is avoided, and the stability of the high-voltage switch body 28 inside the installation cabinet 1 is ensured, so as to solve the problem that the existing high-voltage switch room ventilation device cannot automatically perform temperature control according to the actual temperature. When the temperature is as low as minus 30°C, SF6 will begin to liquefy, and its insulation will be destroyed, thereby affecting the safety of the high-voltage switch.
Claims
1. A ventilation assembly, comprising a mounting cabinet (1); characterized in that: A mounting ring plate (2) is provided on the right side of the interior of the mounting ring plate (2), and a filter screen (4) is connected to both the left and right sides of the interior of the mounting ring plate (2), and a ventilation fan (3) is installed between the filter screens (4) on the left and right sides. A heating box (5) is connected to the left side of the top of the mounting cabinet (1), and an air inlet (6) is provided on the top of the heating box (5). A fan (9) is provided inside the air inlet (6), and a connecting rod (7) is connected to the outside of the fan (9), and the other end of the connecting rod (7) is connected to the inner side wall of the air inlet (6). A mounting groove (10) is provided on both the left and right sides of the interior of the heating box (5), and the interior of the heating box (5) is provided with a fan (9). The bottom of the installation cabinet (5) is provided with installation grooves (11) on both left and right sides, and heaters (12) are installed inside the installation grooves (10) and (11). The bottom of the heating box (5) is provided with an air outlet pipe (14), which is connected to the rear side of the installation cabinet (1). The other end of the air outlet pipe (14) is arranged at the lower end of the installation cabinet (1). The front of the air outlet pipe (14) is provided with air outlets (15) at equal intervals. A temperature control switch (26) is installed on the right side of the top of the installation cabinet (1). The ventilation fan (3), the blower (9) and the heater (12) are electrically connected to the temperature control switch (26).
2. The ventilation assembly according to claim 1, characterized in that: The interior of the air inlet (6) is connected to a second filter (8), and the second filter (8) is located at the upper end of the fan (9).
3. The ventilation assembly according to claim 2, characterized in that: A heat-insulating layer (13) is arranged on the outside of the heating box (5), and the heat-insulating layer (13) is arranged around the heating box (5).
4. The ventilation assembly according to claim 3, characterized in that: The upper ends of the left and right sides of the air outlet pipe (14) are connected to connecting branch pipes (16), which are connected to the left and right ends of the rear side of the installation cabinet (1), and the front of the connecting branch pipe (16) is provided with two air outlets (17) at equal intervals.
5. The ventilation assembly according to claim 4, characterized in that: Both front and rear ends of the right side of the installation cabinet (1) are connected to installation plates (18), and a shielding plate (19) is rotatably connected between the front and rear installation plates (18).
6. The ventilation assembly according to claim 5, characterized in that: A support plate (20) is connected to the upper right end of the interior of the installation cabinet (1), and hinge seats (21) are connected to the front and rear ends of the top left side of the support plate (20).
7. The ventilation assembly according to claim 6, characterized in that: An electric push rod (22) is hinged inside the hinge seat 1 (21), and the electric push rod (22) is electrically connected to the temperature control switch (26). The front and rear ends of the right side of the installation cabinet (1) are both provided with clearance holes (25), and the output end of the electric push rod (22) is hinged to the hinge seat 2 (23) through the clearance hole (25), and the hinge seat 2 (23) is connected to the lower end of the left side of the baffle plate (19).
8. The ventilation assembly according to claim 7, characterized in that: A sealing pad (24) is connected to the left side of the shielding plate (19), and the sealing pad (24) is located outside the second hinge seat (23).
9. A high-voltage switch for a ventilation assembly, characterized in that It comprises a ventilation assembly according to any one of claims 1 to 8, and further comprises a mounting frame (27), wherein four mounting frames (27) are provided, and the four mounting frames (27) are located on the inner left side of the mounting cabinet (1).
10. The high-voltage switch of the ventilation assembly according to claim 9, characterized in that: The top of the mounting frame (27) is connected to the inner top of the mounting cabinet (1), the bottom of the mounting frame (27) is connected to the inner bottom of the mounting cabinet (1), and a high-voltage switch body (28) is installed between the four mounting frames (27).