CN219938220U - Rectifying device and direct current power supply system - Google Patents
Rectifying device and direct current power supply system Download PDFInfo
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- CN219938220U CN219938220U CN202321336964.4U CN202321336964U CN219938220U CN 219938220 U CN219938220 U CN 219938220U CN 202321336964 U CN202321336964 U CN 202321336964U CN 219938220 U CN219938220 U CN 219938220U
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- transformer
- rectifying
- cabinet
- rectifying device
- power supply
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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Abstract
The utility model provides a rectifying device and a direct current power supply system, wherein the rectifying device comprises a rectifying cabinet and a transformer, the output end of the transformer is connected with the alternating current input end of the rectifying cabinet, and the bottom of the transformer and the bottom of the rectifying cabinet are fixedly arranged on a fixing piece together so as to integrate the transformer and the rectifying cabinet. The rectifying device integrates the transformer and the rectifying cabinet, so that the connection cost between the transformer and the rectifying cabinet is greatly reduced, the on-site wiring is avoided, and the workload of on-site construction is reduced.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, and particularly relates to a rectifying device and a direct current power supply system.
Background
In a dc system connected to a power grid, a step-down transformer is often required to convert high ac power to low ac power, and then a rectifier cabinet is also required to convert the low ac power to dc power. The transformer and the rectifier cabinet are respectively two different components in the system, and are required to be respectively installed, debugged and tested. In practical power engineering implementation, even if the transformer and the rectifier cabinet are close together, the connection cable between the transformer and the rectifier cabinet must be firstly led down to the trench from the transformer, then led into the rectifier cabinet from the bottom of the rectifier cabinet, the length of the connection cable is at least extended by a plurality of meters, and the cost of the high-current cable is relatively high.
Therefore, the installation between the transformer and the rectifying cabinet is always a complex and difficult part of construction, and the accurate installation between the transformer and the rectifying cabinet cannot be realized rapidly.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a rectifying device and a dc power supply system, which are used for solving the technical problem of complex field connection between a transformer and a rectifying cabinet in the prior art.
To achieve the above and other related objects, in a first aspect, the present utility model provides a rectifying device including: a rectifier cabinet and a transformer; the output end of the transformer is connected with the alternating current input end of the rectifier cabinet; the bottom of the transformer and the bottom of the rectifier cabinet are fixedly installed on a fixing piece together so as to integrate the transformer and the rectifier cabinet.
In one implementation manner of the first aspect, a bottom of the rectifying cabinet includes a base; the rectifier cabinet is fixedly installed on the fixing piece through the base.
In an implementation manner of the first aspect, the rectifier cabinet and the transformer are fixedly installed on the same surface of the fixing piece at a preset distance.
Further, the fixing piece is a channel steel.
In an implementation manner of the first aspect, the rectifying device further includes a connection wire, one end of which is connected to the output end of the transformer, and the other end of which is connected to the ac input end of the rectifying cabinet.
Further, the connecting wire is a copper bar.
Further, one end of the copper bar is connected with the output end of the transformer, and the other end of the copper bar is connected to the alternating current input end of the rectifier bridge in the rectifier cabinet.
In an implementation manner of the first aspect, the rectifying device further includes a heat insulation board; the heat insulating plate is fixedly arranged on the output side of the transformer and is used for insulating heat of the transformer.
Further the heat insulation board is an epoxy resin board.
In a second aspect, the present utility model provides a dc power supply system, where the dc power supply system includes a power distribution network, a power supply device, and a rectifying device according to any one of the first aspects of the present utility model; the input end of the rectifying device is connected with the power distribution network, and the output end of the rectifying device is connected with the power supply equipment and used for converting an alternating current power supply into direct current voltage required by the power supply equipment.
As described above, the rectifying device and the direct current power supply system of the present utility model have the following advantages:
(1) Compared with the prior art, the rectifier cabinet and the transformer are integrated together through the fixing piece at the bottom of the transformer, so that only one product number, one product description, one product test specification and test report are needed for one product, namely, the workload of all relevant files is halved, and the management cost is greatly reduced.
(2) According to the utility model, the transformer and the rectifying cabinet are connected by the copper bars, so that cable connection is replaced, wiring in a trench is avoided, the cost of a connecting wire is greatly reduced, the loss of the connecting wire is reduced, the working efficiency of the rectifying device is improved, and the heating value is reduced.
(3) The transformer and the rectifying cabinet in the rectifying device are assembled together when leaving the factory, and the on-site wiring is avoided when the rectifying cabinet is installed on site, so that the workload of on-site construction is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a rectifying device according to an embodiment of the utility model.
Fig. 2 is a schematic structural diagram of a dc power supply system according to an embodiment of the utility model.
Description of the reference numerals
1000. DC power supply system
100. Rectifying device
200. Power distribution network
300. Power supply apparatus
101. Transformer
102. Rectifying cabinet
103. Fixing piece
104. Base seat
105. Connecting wire
106. Heat insulation board
Detailed Description
The following specific examples are presented to illustrate the present utility model, and those skilled in the art will readily appreciate the additional advantages and capabilities of the present utility model as disclosed herein. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
In the description of the present specification, reference to the term "one embodiment" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this description, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification.
It should be noted that when the transformer and the rectifier cabinet are installed and connected in the conventional manner, the connection needs to be performed through a high-current cable, but the high-current cable must first go down from the transformer to the trench, then go to the inside of the rectifier cabinet from the bottom of the rectifier cabinet, and the length of the high-current cable must be extended by at least several meters.
The trench, i.e., a cable trench, is an indispensable infrastructure in a power plant, and is mainly used for placing cables. Because the cable laid in the cable duct relates to equipment such as control, relay protection, communication, measurement and metering, the cable duct is a nerve center of a power plant, once the cable in the cable duct fails, the relay protection or the control loop can be possibly disabled, so that the accident is expanded, and in the field work, the cable duct has some problems which cannot be ignored due to the fact that the cable duct is not managed in place and a plurality of objective factors, so that hidden dangers are left for safe production.
The utility model provides a rectifying device and a direct current power supply system, wherein the rectifying device integrates a transformer and a rectifying cabinet, so that the connection cost between the transformer and the rectifying cabinet is greatly reduced, the on-site wiring is avoided, and the workload of on-site construction is reduced.
In one embodiment, as shown in fig. 1, the present utility model provides a rectifying device, and the rectifying device 100 includes a rectifying cabinet 102 and a transformer 101.
Specifically, the output end of the transformer 101 is connected to the ac input end of the rectifying cabinet 102, and the bottom of the transformer 101 and the bottom of the rectifying cabinet 102 are fixedly mounted on a fixing member 103 together to integrate the transformer 101 and the rectifying cabinet 102.
The fixing member 103 is a fixing member 103 for mounting the transformer 101, and the fixing member 103 for mounting the transformer 101 is extended, and the rectifier cabinet 102 is mounted on the fixing member 103, so that the integration of the transformer 101 and the rectifier cabinet 102 can be realized.
Specifically, the bottom of the rectifying cabinet 102 further includes a base 104, and the rectifying cabinet 102 is fixedly mounted on the fixing member 103 through the base 104.
Specifically, the rectifying cabinet 102 and the transformer 101 are fixedly mounted on the same surface of the fixing member 103 at a predetermined distance.
Preferably, the fixing member 103 is a channel steel.
Specifically, the mounting channel of the transformer 101 is extended, and the base 104 of the rectifier cabinet 102 is disposed on the extended channel.
In an embodiment, the rectifying device 100 further includes a connection line 105, where one end of the connection line 105 is connected to the output end of the transformer 101, and the other end is connected to the ac input end of the rectifying cabinet 102.
Specifically, the connection line 105 is a copper bar.
In this embodiment, the transformer 101 and the rectifier cabinet 102 are connected by copper bars instead of cable connection, so that wiring in a trench is avoided, the cost of the connecting wire 105 can be greatly reduced, and the loss of the connecting wire 105 is reduced. As the heat dissipation of the copper bars is better than that of the cables, the overheating of the rectifying device 100 can be further avoided; and the mechanical strength of the copper bar is better than that of the cable, so that deformation can be avoided, and the short circuit risk caused by insulation damage of the cable is avoided.
Specifically, one end of the copper bar is connected to the output end of the transformer 101, and the other end is connected to the ac input end of the rectifier bridge in the rectifier cabinet 102.
In an embodiment, the rectifying device 100 further includes a heat insulation board 106, where the heat insulation board 106 is fixedly installed on the output side of the transformer 101, and is used for insulating heat of the transformer 101.
Preferably, the heat shield 106 is an epoxy plate.
As shown in fig. 2, in an embodiment, the present utility model provides a dc power supply system 1000, which includes a power distribution network 200, a power supply device 300, and the rectifying device 100 according to any embodiment of the present utility model, wherein an input end of the rectifying device 100 is connected to the power distribution network 200, and an output end of the rectifying device is connected to the power supply device 300, so as to convert an ac power source into a dc voltage required by the power supply device 300.
Referring to fig. 1 to fig. 2, in a practical embodiment, a dc-powered electric vehicle fast charging station is provided, and the total capacity of the electric vehicle fast charging station is 500kW, an input three-phase 10kV ac voltage is converted into three groups of three-phase low-voltage ac outputs by a multi-pulse rectifier transformer 101, the three groups of three-phase low-voltage ac outputs are connected to a rectifier cabinet 102 by 9 copper bars, and the rectifier cabinet 102 converts the three groups of three-phase low-voltage ac outputs into one group of dc outputs by internal rectifier diodes.
In the conventional scheme, 9 heavy current cables need to be connected between the transformer 101 and the rectifying cabinet 102, even if the transformer 101 and the rectifying cabinet 102 are close together, the heavy current cables must first go down a trench and then go up from the bottom of the rectifying cabinet 102, the total length of each cable is at least 5-6 meters, and the cost of the heavy current cables is up to 2 ten thousand yuan.
In this embodiment, the three groups of three-phase low-voltage ac outputs of the transformer 101 are directly connected from the side of the rectifying cabinet 102 to the diode rectifying bridge inside the rectifying cabinet 102 from the output end of the transformer 101 by using 9 copper bars, the wiring length inside the rectifying cabinet 102 is almost 0, and the length of each copper bar outside is only about 1 meter, so that compared with the method, the method can save more than 80%.
In this practical embodiment, since the transformer 101 and the rectifier cabinet 102 are closer together than before integrating the transformer 101 and the rectifier cabinet 102 together, a heat insulating board 106 is required to be added between the transformer 101 and the rectifier cabinet 102 in order to avoid the heat of the transformer 101 affecting the rectifier cabinet 102. In practical implementation, in order to facilitate wiring, an epoxy wiring board is additionally arranged on the outgoing line side of the transformer 101, so that heat insulation and insulation can be provided on one hand, and wiring of copper bars is facilitated on the other hand.
In summary, compared with the prior art, in the first aspect, the rectifier cabinet and the transformer are integrated together through the fixing piece at the bottom of the transformer, so that only one product number, one product description, one product test specification and test report are needed for one product, namely, the workload of all related files is halved, and the management cost is greatly reduced; in the second aspect, the transformer and the rectifying cabinet are connected by the copper bars, so that cable connection is replaced, wiring in a trench is avoided, the cost of a connecting wire can be greatly reduced, the loss of the connecting wire is reduced, the working efficiency of the rectifying device is improved, and the heating value is reduced; in a third aspect, the transformer and the rectifier cabinet in the rectifying device are assembled together when leaving the factory, and when the transformer and the rectifier cabinet are assembled on site, the on-site wiring is avoided, and the workload of on-site construction is greatly reduced. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A rectifying device, comprising: the device comprises a rectifying cabinet and a transformer, and is characterized in that the output end of the transformer is connected with the alternating current input end of the rectifying cabinet;
the bottom of the transformer and the bottom of the rectifier cabinet are fixedly installed on a fixing piece together so as to integrate the transformer and the rectifier cabinet.
2. The rectifying device according to claim 1, wherein the bottom of said rectifying cabinet comprises a base;
the rectifier cabinet is fixedly installed on the fixing piece through the base.
3. The rectifying device according to claim 1, wherein the rectifying cabinet and the transformer are fixedly installed on the same surface of the fixing member at a predetermined distance.
4. A fairing according to claim 3, wherein the securing member is a channel.
5. The rectifying device of claim 1, further comprising: a connecting wire;
one end of the connecting wire is connected with the output end of the transformer, and the other end of the connecting wire is connected with the alternating current input end of the rectifying cabinet.
6. The rectifying device of claim 5, wherein said connecting wires are copper bars.
7. The rectifying device according to claim 6, wherein one end of said copper bar is connected to an output terminal of said transformer and the other end is connected to an ac input terminal of a rectifier bridge in said rectifying cabinet.
8. The rectifying device of claim 1, further comprising: a heat insulating plate;
the heat insulating plate is fixedly arranged on the output side of the transformer and is used for insulating heat of the transformer.
9. The fairing of claim 8 wherein the thermal shield is an epoxy plate.
10. A direct current power supply system comprising a power distribution network, a power supply device and the rectifying device according to any one of claims 1 to 9;
the input end of the rectifying device is connected with the power distribution network, and the output end of the rectifying device is connected with the power supply equipment and used for converting an alternating current power supply into direct current voltage required by the power supply equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336964.4U CN219938220U (en) | 2023-05-29 | 2023-05-29 | Rectifying device and direct current power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336964.4U CN219938220U (en) | 2023-05-29 | 2023-05-29 | Rectifying device and direct current power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219938220U true CN219938220U (en) | 2023-10-31 |
Family
ID=88493655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321336964.4U Active CN219938220U (en) | 2023-05-29 | 2023-05-29 | Rectifying device and direct current power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219938220U (en) |
-
2023
- 2023-05-29 CN CN202321336964.4U patent/CN219938220U/en active Active
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