Direct-current transmission power unit cooling device
By introducing movable baffles and ventilation adjustment devices in the DC transmission power unit room, combined with temperature probes, uniform cooling and real-time temperature monitoring of the DC transmission power unit are achieved, solving the problems of uneven cold air distribution and inaccurate temperature detection, and improving the safety and reliability of the system.
Patent Information
- Application Number
- CN202422433434.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The existing DC transmission power unit cooling system has problems such as uneven cold air distribution, unsatisfactory ventilation effect and inaccurate temperature detection, resulting in poor heat dissipation in some units and difficulty in fault diagnosis.
A movable baffle and ventilation adjustment device are set in the DC transmission power unit room, equipped with a temperature probe. The air volume distribution is adjusted by the movable baffle, the air volume is adjusted by the ventilation adjustment device, and the temperature probe monitors the unit temperature in real time to achieve precise air volume control and temperature detection.
It solves the problems of uneven cold air distribution and inaccurate temperature detection, ensures uniform heat dissipation in each unit, predicts faults in a timely manner, and improves the safety and reliability of the system.
Smart Images
Figure CN223391562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air cooling of heating components, in particular to a cooling device for a DC power unit. Background Art
[0002] Offshore oil platform production facilities are large steel structures primarily used for crude oil extraction and initial processing. Offshore oil platform facilities are generally divided into central production and processing platforms and wellhead production platforms. Located in the unique natural environment of the ocean, these platforms require high corrosion resistance and typhoon resistance. These high construction requirements lead to high construction costs, which in turn limits the space available on offshore platforms. Central production and processing platforms typically use generators for their own power supply. However, since generators take up a lot of space, to conserve space and resources, wellhead production platforms are typically powered by generators on the central production and processing platform. There are two ways to power the wellhead platforms from the central production and processing platform: AC and DC. Since the power cables are laid on the seabed, using AC power over long distances can result in significant ground capacitance, potentially causing cable breakdown. Using DC power reduces this risk. Therefore, DC power is used for some remote wellhead production platforms. The DC power supply system consists of two steps. First, the central platform rectifies the AC power generated by the generator into DC power through a rectifier. This DC power is then transmitted to the wellhead platform via a submarine cable. The wellhead platform then inverts the DC power into AC power through an inverter, thus achieving power transmission. Both the rectifier and the inverter require power units for the AC-DC power conversion. As the core component of the DC power transmission system, the power unit not only requires a clean and tidy environment, but also requires a relatively suitable temperature due to its high heat generation. Therefore, the power unit room where the power units are stored has its own cooling system.
[0003] There are many DC transmission power units, which work together to realize power conversion. However, due to the large number of units (10.5KV voltage generally has 24 units), the power units have a certain failure rate. To repair the power units, the power units need to be pulled out from the bracket before they can be repaired. Therefore, an area is usually reserved in front of the power unit room for repairing the power units. Figure 1 This is a schematic diagram of a conventional cooling method for a DC power transmission unit according to an embodiment of the present invention. Figure 1 As shown, the air inlet of the DC transmission power unit room is located above the maintenance room. The cold air first enters the maintenance room, then passes through each power unit due to wind pressure, and then leaves through the air outlet. This cooling method has been found to have the following problems during use:
[0004] 1. To ensure smooth maintenance, the maintenance room is large. When cold air enters the maintenance room, it sinks, resulting in different heat and cold temperatures in different areas. Ultimately, some power units have good heat dissipation, while others have poor heat dissipation.
[0005] 2. Since wind pressure is used to force cold air into the power unit, the ventilation effect is good in places with high wind pressure, and the ventilation effect is not ideal in places with low wind pressure;
[0006] 3. The traditional method is to have a temperature probe in the maintenance room to monitor the temperature of the power unit room, but there is no temperature detection device for each power unit. As a result, when the power unit reports an over-temperature alarm, it is impossible to accurately determine whether the over-temperature is caused by the increase in heat generated by aging components or the high ambient temperature. Utility Model Content
[0007] The purpose of the present utility model is to provide a DC transmission power unit cooling device in order to solve at least one of the above technical problems.
[0008] In a first aspect, an embodiment of the present invention provides a DC power unit cooling device, which is applied to a power unit room, wherein a plurality of DC power units are arranged in the power unit room; an inspection room is arranged in front of the power unit room, an air inlet is arranged at the top of the inspection room, an air outlet duct is arranged at the rear of the power unit room, and an air outlet is arranged at the top of the air outlet duct; the device comprises: a movable baffle arranged in the inspection room in front of the power unit room, a ventilation adjustment device arranged in front of each DC power unit, and a temperature probe arranged behind each DC power unit; the movable baffle and the front wall of the power unit room form an air volume storage area, and the top of the air volume storage area is connected to the air inlet; the movable baffle can move back and forth in the inspection room, and a sliding door is arranged under the movable baffle; the ventilation adjustment device is used to adjust the air volume supplied to each DC power unit; and the temperature probe is used to monitor the temperature at the air outlet position of each DC power unit.
[0009] Furthermore, guide rails are provided at the corners of the maintenance room, and the ends of the guide rails are fixedly connected to the frame of the power unit room; and the four corners of the movable baffle are slidably connected to the guide rails.
[0010] Furthermore, a mechanical limiting structure is provided on the guide rail for fixing the position of the movable baffle in the inspection chamber.
[0011] Furthermore, the movable baffle is an iron plate.
[0012] Furthermore, the ventilation adjustment device includes a ventilation damper, a ventilation fan, an air duct, a fixing device and a filter; the air duct is fixed to the front position of the DC transmission power unit by the fixing device, the filter is arranged between the air duct and the fixing device, the ventilation fan is arranged at the front end position of the air duct, and the ventilation damper is arranged at the front end of the ventilation fan.
[0013] Furthermore, fixing holes are provided around the fixing device, and the fixing device is fixed to the front position of the DC power transmission unit through the fixing holes and fixing bolts.
[0014] Furthermore, the ventilation damper includes a damper frame, a damper wind shield and a damper controller; the damper wind shield is rotatably arranged inside the damper frame; the damper controller is arranged at the top of the damper frame for controlling the rotation angle of the damper wind shield.
[0015] Furthermore, the number of the ventilation dampers and the number of the ventilation fans are both two.
[0016] The utility model provides a DC power unit cooling device. By modifying the DC power unit room structure and adding a movable baffle and a ventilation adjustment device, the problem of uneven cooling capacity distribution among the DC power units causing some power units to heat up and be damaged is solved. At the same time, the temperature of each DC power unit can be understood in real time through a temperature probe, the operating status of the DC power unit can be understood in time, and faults of the DC power unit can be predicted, making the DC transmission operation safer and more reliable, and alleviating the technical problems of unsatisfactory ventilation effect and inaccurate temperature detection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1 A schematic diagram of a conventional cooling method for a DC power transmission unit provided by an embodiment of the present utility model;
[0019] Figure 2 A schematic diagram of a DC transmission power unit cooling device provided by an embodiment of the present utility model;
[0020] Figure 3 A three-dimensional schematic diagram of the front of a maintenance room provided by an embodiment of the present utility model;
[0021] Figure 4 A three-dimensional schematic diagram of the back of a maintenance room provided by an embodiment of the present utility model;
[0022] Figure 5 A structural schematic diagram of a ventilation and adjustment device provided in an embodiment of the present utility model.
[0023] In the figure: 1. Power unit room, 2. DC transmission power unit, 3. Maintenance room, 4. Air inlet, 5. Air outlet duct, 6. Air outlet, 7. Movable baffle, 8. Ventilation adjustment device, 9. Temperature probe, 10. Air volume storage area, 11. Sliding door, 12. Mechanical limit structure, 13. Maintenance room door, 14. Guide rail, 15. Ventilation damper, 151. Damper frame, 152. Damper wind shield, 153. Damper controller, 16. Ventilation fan, 17. Air duct, 18. Fixing device, 19. Filter, 20. Fixing hole. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] Example 1
[0026] Figure 2 This is a schematic diagram of a DC power unit cooling device according to an embodiment of the present invention. The device is applied to a power unit room 1, wherein a plurality of DC power units 2 are arranged in the power unit room 1; an inspection room 3 is arranged in front of the power unit room 1, an air inlet 4 is arranged on the top of the inspection room 3, an air outlet duct 5 is arranged at the rear of the power unit room 1, and an air outlet 6 is arranged on the top of the air outlet duct 5. Specifically, Figure 2 As shown, the device provided by the embodiment of the present invention includes: a movable baffle 7 disposed in front of the power unit compartment 1 within the maintenance room 3; a ventilation control device 8 disposed in front of each DC power unit 2; and a temperature probe 9 disposed behind each DC power unit 2. The movable baffle 7 and the front wall of the power unit compartment 1 form an air volume storage area 10, the top of which is connected to the air inlet 4.
[0027] Specifically, the movable baffle 7 can move back and forth in the inspection room 3 , and a sliding door 11 is provided below the movable baffle 7 .
[0028] The ventilation adjustment device 8 is used to adjust the air volume fed into each DC power unit 2 .
[0029] The temperature probe 9 is used to monitor the temperature at the air outlet of each DC power unit 2 .
[0030] Figure 3 This is a three-dimensional schematic diagram of the front of a maintenance room provided according to an embodiment of the utility model. Figure 4 This is a three-dimensional schematic diagram of the back of a maintenance room provided according to an embodiment of the present utility model. Figure 3 and Figure 4 As shown, guide rails 14 are provided at the corners of the maintenance room 3 , and the ends of the guide rails 14 are fixedly connected to the frame of the power unit room 1 ; the four corners of the movable baffle 7 are slidably connected to the guide rails 14 .
[0031] In an embodiment of the present utility model, by arranging a movable baffle 7 in the maintenance room 3, the air volume can be prevented from leaking from the air volume storage area 10 to the maintenance room 3; by arranging a guide rail 14 at the corner of the maintenance room 3, the movable baffle 7 can be moved back and forth in the maintenance room 3, reducing the space of the air volume storage area 10 when personnel do not need to inspect, and increasing the space of the air volume storage area 10 when personnel are inspecting; by arranging a sliding door 11 on the movable baffle 7, it can be opened when personnel are inspecting to facilitate personnel entry, and closed when personnel are not inspecting to prevent air volume from leaking to the maintenance room 3.
[0032] Preferably, if Figure 2 As shown, the maintenance room 3 is also provided with a maintenance room door 13 to facilitate the entry and exit of maintenance personnel.
[0033] Preferably, if Figure 2 As shown, a mechanical limiting structure 12 is provided on the guide rail 14 for fixing the position of the movable baffle 7 in the maintenance room 3. Specifically, the mechanical limiting structure 12 on the guide rail 14 can prevent the movable baffle 7 from being too close to the DC power unit 2, which would make the space of the air volume storage area 10 too small.
[0034] In an optional implementation provided in an embodiment of the present invention, the movable baffle 7 is an iron plate.
[0035] Figure 5 This is a structural diagram of a ventilation and adjustment device provided according to an embodiment of the present utility model. Figure 5 As shown, the ventilation adjustment device 8 includes a ventilation damper 15, a ventilation fan 16, an air duct 17, a fixing device 18, and a filter 19. Specifically, the air duct 17 is fixed in front of the DC power unit 2 by the fixing device 18. The filter 19 is provided between the air duct 17 and the fixing device 18. The ventilation fan 16 is provided at the front end of the air duct 17, and the ventilation damper 15 is provided at the front end of the ventilation fan 16.
[0036] Preferably, the ventilation damper 15 and the ventilation fan 16, the ventilation fan 16 and the air duct 17, the air duct 17 and the filter 19, and the filter 19 and the fixing device 18 are all connected and fixed to each other by bolts.
[0037] Specifically, such as Figure 5 As shown, fixing holes 20 are provided around the periphery of the fixing device 18. The fixing device 18 is secured to the front of the DC power unit 2 via fixing holes 20 and fixed bolts. During use, the fixing holes 20 are aligned with the screw holes on the front of the DC power unit 2 and tightened with the screws to achieve fixation.
[0038] Specifically, such as Figure 5 As shown, the ventilation damper 15 includes a damper frame 151, a damper wind shield 152, and a damper controller 153. The damper wind shield 152 is rotatably mounted inside the damper frame 151; the damper controller 153 is mounted on top of the damper frame 151 and is used to control the rotation angle of the damper wind shield 152, thereby controlling the air volume entering the DC power unit 2.
[0039] In an optional implementation provided by an embodiment of the present utility model, the DC transmission power unit cooling device is also communicatively connected to the central control panel.
[0040] The embodiment of the present invention provides a DC power unit cooling device, the working principle of which is as follows: when the power unit room 1 is operating normally, the operating status is displayed on the central control screen. The movable baffle 7 is at the end of the guide rail 14, and the mechanical limit structure 12 is actuated. At this time, the movable baffle 7 cannot continue to move in the direction close to the DC power unit 2, but can move in the direction of the maintenance room door 13. The sliding door 11 is in a closed state, which can just block the opening on the movable baffle 7. After the cold air enters the air volume storage area 10 from the air inlet 4, the cold air is then sent to the DC power unit 2 by the ventilation adjustment device 8, and then the air coming out from the rear of the DC power unit 2 is extracted from the air outlet 6 by the cooling system exhaust fan. A temperature probe 9 is installed at the air outlet of each DC power unit 2, which can monitor the temperature of the DC power unit 2 at the air outlet in real time. When the temperature at the air outlet is high, the central control panel will adjust the damper opening in real time according to the temperature, thereby increasing the amount of cold air entering the DC transmission power unit 2. Conversely, the damper opening will be reduced to reduce the amount of cold air, thereby achieving the purpose of regulating the heat dissipation of the power unit.
[0041] When a DC transmission power unit 2 fails in the power unit room 1 and needs to be repaired, the central control screen displays the maintenance status, at which time the DC transmission stops and the ventilation adjustment device 8 shuts down. At this time, the movable baffle 7 is moved to the side of the maintenance room door 13 by the automatic control device, and the mechanical limit structure 12 does not operate. The sliding door 11 is in the open state. After the sliding door 11 on the movable baffle 7 and the maintenance room door 13 are opened, the personnel confirm that there is no problem and enter the maintenance room 3 to repair the faulty DC transmission power unit 2. When the maintenance is completed, the maintenance status is switched back to the running state on the central control screen. At this time, the movable baffle 7 slowly returns to the side close to the DC transmission power unit 2, and the ventilation adjustment device 8 works.
[0042] In an optional implementation provided by the embodiment of the present utility model, as Figure 5 As shown, the number of ventilation dampers 15 and ventilation fans 16 is two. Specifically, each ventilation adjustment device 8 has two ventilation dampers 15 and ventilation fans 16, which serve as backup for each other. Normally, one group of ventilation dampers 15 and ventilation fans 16 is in a normally closed state, and only one group is working. When a working group of ventilation dampers 15 and ventilation fans 16 fails, the central control panel detects a fault signal. At this time, the central control panel issues a command to close the faulty dampers and fans and activate the spare group of ventilation dampers 15 and ventilation fans 16. In this way, the reliability of the ventilation adjustment device 8 can be ensured. When repairing the power unit, the faulty ventilation adjustment device 8 can be repaired at the same time.
[0043] As can be seen from the above description, the present invention provides a DC power unit cooling device. By modifying the DC power unit chamber structure and adding movable baffles and ventilation adjustment devices, the present invention solves the problem of uneven cooling capacity distribution among the DC power units, which causes some power units to heat up and be damaged. At the same time, the present invention can use a temperature probe to obtain real-time information on the temperature of each DC power unit, promptly understand the operating status of the DC power unit, and predict DC power unit failures. This makes DC transmission operation safer and more reliable, and alleviates the technical problems of unsatisfactory ventilation and inaccurate temperature detection in the prior art.
[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0045] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A DC power unit cooling device, applied to a power unit room, wherein a plurality of DC power units are arranged in the power unit room; an inspection room is arranged in front of the power unit room, an air inlet is arranged on the top of the inspection room, an air outlet duct is arranged at the rear of the power unit room, and an air outlet is arranged on the top of the air outlet duct; characterized in that: include: A movable baffle is provided in front of the power unit room in the maintenance room, a ventilation adjustment device is provided in front of each DC power unit, and a temperature probe is provided behind each DC power unit; the movable baffle and the front wall of the power unit room form an air volume storage area, and the top of the air volume storage area is connected to the air inlet; The movable baffle can move forward and backward in the inspection room, and a sliding door is provided below the movable baffle; The ventilation adjustment device is used to adjust the air volume fed into each DC power unit; The temperature probe is used to monitor the temperature at the air outlet of each DC power unit.
2. The DC power unit cooling device according to claim 1, wherein: Guide rails are provided at the corners of the maintenance room, and the ends of the guide rails are fixedly connected to the frame of the power unit room; the four corners of the movable baffle are slidably connected to the guide rails.
3. The DC power unit cooling device according to claim 2, characterized in that: A mechanical limiting structure is provided on the guide rail for fixing the position of the movable baffle in the inspection chamber.
4. The DC power unit cooling device according to claim 1, wherein: The movable baffle is an iron plate.
5. The DC power unit cooling device according to claim 1, wherein: The ventilation adjustment device includes a ventilation damper, a ventilation fan, an air duct, a fixing device and a filter; the air duct is fixed to the front position of the DC transmission power unit by the fixing device, the filter is arranged between the air duct and the fixing device, the ventilation fan is arranged at the front end position of the air duct, and the ventilation damper is arranged at the front end of the ventilation fan.
6. The DC power unit cooling device according to claim 5, characterized in that: Fixing holes are provided around the fixing device, and the fixing device is fixed to the front position of the DC power transmission unit through the fixing holes and fixing bolts.
7. The DC power unit cooling device according to claim 5, characterized in that: The ventilation damper includes a damper frame, a damper wind shield and a damper controller; the damper wind shield is rotatably arranged inside the damper frame; the damper controller is arranged on the top of the damper frame for controlling the rotation angle of the damper wind shield.
8. The DC power unit cooling device according to claim 5, characterized in that: The number of the ventilation dampers and the number of the ventilation fans are both two.