Compact type preassembled transformer substation

Abstract

The utility model discloses a compact preassembled transformer station, which comprises a box body, the box body comprises a low-voltage chamber, a transformer chamber and a medium-voltage chamber which are sequentially connected, the low-voltage chamber is communicated with the transformer chamber, a low-voltage switch cabinet is arranged in the low-voltage chamber, a transformer is arranged in the transformer chamber, and the medium-voltage chamber is communicated with the transformer chamber. The medium-voltage chamber is provided with a high-voltage cabinet, a communication power cabinet and a heat exchanger. An air inlet of the heat exchanger is located in the side wall of the medium-voltage chamber. The problem that the heat dissipation effect of the preassembled transformer substation is relatively poor is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of prefabricated substation, specifically relates to a compact prefabricated substation. BACKGROUND

[0002] The prefabricated substation is a kind of substation that integrates high-voltage switch, transformer and low-voltage distribution device in a compact box body.This kind of substation has the advantages of compact structure, small land occupation, convenient transportation and installation, but also has some technical defects, mainly including the following aspects:

[0003] (1) Heat dissipation problem: due to the limited internal space of box-type substation and the dense equipment, the heat dissipation effect is relatively poor.In high temperature environment, the temperature of equipment may be too high, and then the service life and performance of equipment are affected.The poor heat dissipation may also cause equipment failure, and even lead to the shutdown of the whole substation.

[0004] (2) Maintenance difficulty: the internal space of box-type substation is narrow, and the distance between equipment is close, which brings certain difficulty to maintenance personnel.When maintenance personnel carry out inspection, repair and other operations, they need high professional skill and experience to ensure the safe and stable operation of equipment.Due to space limitation, some conventional maintenance tools and equipment may be difficult to use in the internal space of box-type substation. SUMMARY

[0005] The utility model provides a compact prefabricated substation, solves the problem of relatively poor heat dissipation effect of prefabricated substation.

[0006] In order to achieve the above purpose, the utility model discloses a compact prefabricated substation, including box, the box includes low pressure chamber, transformer chamber and medium pressure chamber connected in sequence, the low pressure chamber and transformer chamber are communicated, the low pressure chamber is provided with low voltage switch cabinet, the transformer chamber is provided with transformer, the medium pressure chamber is provided with high voltage cabinet, communication power cabinet and first heat exchanger, the air inlet of first heat exchanger is located in the side wall of medium pressure chamber.

[0007] Further, the bottom of transformer chamber is hollow structure, and the front and rear side walls adopt mesh structure.

[0008] Further, the transformer, high voltage cabinet and communication power cabinet are arranged in a triangular shape.

[0009] Further, the transformer includes transformer body and sheet type radiator arranged outside the transformer body.

[0010] Further, the low pressure chamber is also provided with second heat exchanger and third heat exchanger.

[0011] Further, the low-voltage switch cabinet and the transformer are outdoor cabinet structures, and the high-voltage cabinet and the communication power cabinet are indoor cabinet structures.

[0012] Further, a wire slot is arranged in the box body, and the wire slot is used for bearing a connecting wire between the low-voltage switch cabinet and the communication power cabinet.

[0013] Further, the wire slot is installed on the top of the box body.

[0014] Further, the top of the low-voltage chamber, the transformer chamber and the medium-voltage chamber of the pre-installed transformer substation is a detachable structure.

[0015] Further, the box body is made of Q235 ordinary carbon structural steel or Q345 low-alloy high-strength structural steel.

[0016] Compared with the prior art, the utility model has at least the following beneficial technical effects:

[0017] The utility model discloses a compact pre-installed transformer substation integrates four core components of low-voltage switch cabinet, transformer, high-voltage cabinet and communication power cabinet, and each part is functionally independent but works cooperatively, and builds an efficient and convenient power conversion and distribution system.

[0018] (1) space layout optimization: the traditional heat insulation plate between the low-voltage switch cabinet chamber and the transformer chamber is cancelled, and the low-voltage chamber and the transformer chamber are communicated, and this design greatly increases the assembly operation space of copper bars between the transformer and the low-voltage switch cabinet, greatly simplifies the installation process and improves the convenience and safety of later maintenance.

[0019] (2) transformer heat dissipation innovation: the front and rear side walls are mesh structures, form horizontal air ducts, and the bottom of the transformer chamber adopts a hollow structure container design, and the top is a mesh structure, and the hollow structure and the mesh structure form vertical air ducts, increase the air duct, and heat can be dissipated to the air more quickly, effectively improve the heat dissipation efficiency of the transformer, thereby supporting larger capacity transformer operation, realizing transformer capacity maximization 9240KVA / 40 DEG C, and meeting large power demand scenarios.

[0020] (3) communication power cabinet design: the communication power cabinet adopts a compact integrated structure design, and combines a bridge type sheet metal wire slot high-level wiring design, not only improves the production and installation efficiency, but also avoids the problem that wiring needs to be frequently climbed to the ground in the traditional wiring mode.

[0021] (4) low-voltage switch cabinet design: the low-voltage side A and B cabinets adopt an integrated outdoor cabinet design, not only enhance the compactness of the structure, but also make the production and assembly efficiency higher. In addition, the low-voltage switch cabinet significantly improves the heat dissipation performance through the direct heat dissipation mode of two heat exchangers, and ensures that the equipment operation is more stable and reliable. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the prefabricated substation described in this utility model;

[0023] Figure 2 This is a top view of the prefabricated substation described in this utility model;

[0024] Figure 3 This is a rear view of the prefabricated substation described in this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the pre-installed substation components after removing the top cover, as described in a specific embodiment of this utility model.

[0026] Figure 5 This is a front view of the pre-installed substation after removing the top cover, as described in the specific embodiment of this utility model.

[0027] Figure 6 This is a left view of the prefabricated substation after the top cover has been removed, as described in the specific embodiment of this utility model.

[0028] Figure 7 This is a right view of the prefabricated substation after the top cover has been removed, as described in the specific embodiment of this utility model.

[0029] Figure 8 This is a top view of the prefabricated substation according to a specific embodiment of the present invention after the top cover has been removed;

[0030] Figure 9 This is a bottom view of the prefabricated substation after removing the top cover, as described in the specific embodiment of this utility model.

[0031] Figure 10 This is a schematic diagram showing the integration of the various modules described in this utility model.

[0032] In the attached diagram: 1. Low-voltage switchgear; 2. Transformer; 3. High-voltage switchgear; 4. Communication and power switchgear; 5. Third heat exchanger; 6. Second heat exchanger; 7. First heat exchanger; 8. Cable tray; 9. Low-voltage compartment; 10. Transformer compartment; 11. Medium-voltage compartment. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0034] In order to make the technical scheme in the utility model better understood by the person skilled in the art, the technical scheme in the utility model embodiments will be clearly and completely described below in conjunction with the drawings of the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the utility model.

[0035] It should be noted that when an element is referred to as being "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] Figures 1 to 3 The appearance structure diagram of the prefabricated transformer substation is shown from different angles. The prefabricated transformer substation has the characteristics of compact structure, high integration, convenient maintenance, good heat dissipation structure and high structural reliability.

[0038] The compact prefabricated transformer substation comprises a box body and multiple independent modules: a high-voltage cabinet 3, a transformer 2, a low-voltage switch cabinet 1 and a communication power cabinet 4. The box body is divided into a low-voltage chamber 9, a transformer chamber 10 and a medium-voltage chamber 11. Each chamber is designed separately, each module can be produced and transported separately, and only simple connection is required on site, so that the integrated efficiency of the whole machine is high. Meanwhile, when a module of the power station needs to be replaced due to failure, it is more convenient. The modules are reasonably arranged and closely connected, thereby reducing the occupied area. There is no heat insulation wall between the transformer 2 and the low-voltage switch cabinet 1, and sufficient maintenance operation space is reserved. When the low-voltage side is maintained, the back plate of the low-voltage switch cabinet 1 can be removed, and the low-voltage switch cabinet 1 and the transformer 2 can be accessed.

[0039] Figure 4 The utility model discloses the specific implementation prepackaged substation removes the structure schematic drawing of component's rear part, has shown the component part of prepackaged substation, including low voltage switch cabinet 1, transformer 2, high voltage cabinet 3 and communication power cabinet 4, four parts are with modular design, directly integrated in 20 feet container, and the container includes low voltage chamber 9, transformer chamber 10 and medium voltage chamber 11, and low voltage chamber 9, transformer chamber 10 and medium voltage chamber 11 are connected closely through " eye " shape combination installation mode.

[0040] Preferably, the container material adopts Q235 ordinary carbon structural steel or Q345 low alloy high strength structural steel.

[0041] Low voltage switch cabinet 1 and communication power cabinet 4 are 1kV below power system, and the two are integrated with opening and closing, control protection and communication, and high voltage cabinet 3 is 12kV to 40.5kV power system.

[0042] Figures 5 to 9 The utility model discloses the based on Figure 4 Each view of the utility model has shown each module of whole machine. High voltage cabinet 3 and communication power cabinet 4 are indoor cabinet structure, and high voltage cabinet 3 and communication power cabinet 4 and first heat exchanger 7 are placed in medium voltage chamber 11, and are independent with other space. The heat of high voltage cabinet 3 is small, and the main heating element is auxiliary transformer in communication power cabinet 4, and communication power cabinet 4 adopts side air inlet and directly radiates heat, and first heat exchanger 7 is arranged between communication power cabinet 4 and the side wall of medium voltage chamber 11, and the air vent of first heat exchanger 7 is embedded in the side wall of medium voltage chamber 11. Low voltage switch cabinet 1 and transformer 2 are outdoor cabinet structure, and low voltage switch cabinet 1 is placed in low voltage chamber 9, and transformer 2 is placed in transformer chamber 10. Transformer 2, high voltage cabinet 3 and communication power cabinet 4 are arranged in " product " shape.

[0043] Low voltage switch cabinet 1 is outdoor cabinet, and low voltage switch cabinet 1 is designed with third heat exchanger 5 and second heat exchanger 6 on the outside of container side wall, and directly radiates heat to copper bar and frame circuit breaker and molded case circuit breaker in low voltage switch cabinet 1. The transformer body adopts sheet type radiator, and the sheet type radiator is located at the periphery of the transformer body, and the container at the bottom of transformer 2 adopts openwork structure, which helps the body heat to be released quickly, saves the empty whole body, and improves the heat dissipation performance of prepackaged substation. The front and rear side walls of transformer 2 chamber adopt mesh structure, which provides ventilation channel for the transformer. Medium voltage chamber 11 is closed structure.

[0044] The low-voltage switch cabinet 1 is designed as IP55 structure, and has high moisture-proof and waterproof level, the high-voltage cabinet 3 and the communication power cabinet 4 are single cabinet structures, and the protection level of the medium-voltage chamber 11 is also IP55, so that the protection performance of the prefabricated substation is improved. The wiring between the low-voltage switch cabinet 1 and the communication power cabinet 4 adopts the bridge type wire slot 8 high-level wiring. Preferably, the wire slot 8 adopts a metal wire slot.

[0045] The heat dissipation modes of the low-voltage switch cabinet 1 and the communication power cabinet 4 are both direct heat dissipation modes, the heat source of the low-voltage switch cabinet 1 is mainly the bus copper bar and the frame, the third heat exchanger 5 and the second heat exchanger 6 can directly dissipate heat for the bus copper bar and the frame circuit breaker in the low-voltage switch cabinet 1, the heat source of the communication power cabinet 4 is mainly the auxiliary transformer and other electrical components, and the first heat exchanger 7 can directly dissipate heat for the same. Meanwhile, the low-voltage switch cabinet 1 is an outdoor cabinet structure, there is no partition between the transformer 2 and the low-voltage switch cabinet 1, and the assembly operation space of the copper bar between the transformer 2 and the low-voltage switch cabinet 1 is added.

[0046] With reference to Figure 10 , the low-voltage switch cabinet 1, the transformer 2, the high-voltage cabinet 3 and the communication power cabinet 4 are all single modules, the top of the low-voltage chamber 9 and the top of the transformer 2 chamber are designed as detachable structures, the transformer 2 is assembled in a manner of hoisting from the top, the low-voltage switch cabinet 1 is assembled in a manner of forking from the side or hoisting from the top, and the high-voltage cabinet 3 and the communication power cabinet 4 are assembled in a manner of forking from the side. The low-voltage side and the high-voltage side adopt the bridge type wire slot 8 high-level wiring, and the wire slot 8 is also a single module and can be directly disassembled, so that when each module on the site is replaced, the wiring can be directly performed from the bridge.

[0047] The utility model adopts outdoor low-voltage switch cabinet 1 direct heat dissipation scheme, and optimizes the transformer bottom container structure, to enhance air circulation, and high-voltage side implements side air inlet direct heat dissipation strategy, effectively improves the whole heat dissipation efficiency, improves the heat dissipation performance of the substation through the above design. In addition, through the optimization of the structure of the power station and the improvement of the heat dissipation performance, the maximum of the transformer capacity is successfully realized to reach 9240KVA / 40 DEG C. On the layout, the "eye" and "pin" shape combination installation mode is used to closely connect each cabinet, the occupied area is reduced, and all components are modular design, which is convenient for production and on-site rapid assembly. In addition, the maintenance convenience and maintenance operation space reservation problem are specially considered, the bridge type metal wire slot high-level wiring is adopted to improve the production efficiency and maintenance convenience. The container material is solid and durable, has excellent dustproof, waterproof, fireproof and theftproof properties, and is provided with a door lock protection net to ensure safety.

[0048] The compact prefabricated transformer substation provided by the utility model has the characteristics of high heat dissipation efficiency, good installation and maintenance convenience and maximized power station capacity.

[0049] The term "consisting of" describing a combination is intended to include the identified elements, ingredients, components, or steps, and any additional elements, ingredients, components, or steps that do not materially affect the basic and novel characteristics of the combination. The use of the term "comprising" or "including" to describe combinations of elements, ingredients, components, or steps herein is intended to also cover embodiments consisting essentially of the identified elements, ingredients, components, or steps. Multiple elements, ingredients, components, or steps can be provided by a single integrated element, ingredient, component, or step. Alternatively, a single integrated element, ingredient, component, or step can be divided into separate elements, ingredients, components, or steps. The disclosure of "a" or "one" to describe an element, ingredient, component, or step is not intended to foreclose additional elements, ingredients, components, or steps.

[0050] It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the technology should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for the purpose of the present disclosure. The omission of any aspect of the subject matter disclosed herein does not preclude coverage of such aspect, nor does it surrender the applicability of such aspect to the disclosed application.

Claims

1. A compact prepackaged substation, characterized in that, The prepackaged transformer substation comprises a box body, the box body comprises a low-voltage chamber (9), a transformer chamber (10) and a medium-voltage chamber (11) connected in sequence, the low-voltage chamber (9) and the transformer chamber (10) are communicated, the low-voltage chamber (9) is provided with a low-voltage switch cabinet (1), the transformer chamber (10) is provided with a transformer (2), the medium-voltage chamber (11) is provided with a high-voltage cabinet (3), a communication power cabinet (4) and a first heat exchanger (7), and an air inlet of the first heat exchanger (7) is located at a side wall of the medium-voltage chamber (11).

2. A compact prepackaged electrical substation according to claim 1, characterized in that, The bottom of the transformer chamber (10) is in a hollow structure, and the front and rear side walls are in a mesh structure.

3. A compact prepackaged electrical substation according to claim 1 or 2, characterized in that The transformer (2), the high-voltage cabinet (3) and the communication power cabinet (4) are arranged in a triangular shape.

4. A compact prepackaged electrical substation according to claim 1 or 2, characterized in that The transformer (2) comprises a transformer body and a sheet-type radiator arranged outside the transformer body.

5. A compact prepackaged electrical substation according to claim 1, characterized in that, The low-voltage chamber (9) is further provided with a second heat exchanger (6) and a third heat exchanger (5).

6. A compact prepackaged electrical substation according to claim 1, characterized in that, The low-voltage switch cabinet (1) and the transformer (2) are in an outdoor cabinet structure, and the high-voltage cabinet (3) and the communication power cabinet (4) are in an indoor cabinet structure.

7. A compact prepackaged electrical substation according to claim 1, characterized in that, A wire slot (8) is arranged in the box body, and the wire slot is used for bearing a connecting wire between the low-voltage switch cabinet (1) and the communication power cabinet (4).

8. A compact prepackaged electrical substation according to claim 7, characterized in that, The wire slot (8) is mounted at the top of the box body.

9. A compact prepackaged electrical substation according to claim 1, characterized in that, The top of the low-voltage chamber (9), the transformer chamber (10) and the medium-voltage chamber (11) of the prepackaged transformer substation is in a detachable structure.

10. A compact prepackaged electrical substation according to claim 1, characterized in that, The material of the box body is Q235 ordinary carbon structural steel or Q345 low-alloy high-strength structural steel.

Images