Prefabricated compact box-type substation

Abstract

The invention belongs to the technical field of transformer substations, and particularly relates to a preassembled compact box-type transformer substation which comprises a shell bottom, a box-type shell is fixedly connected to the top of the shell bottom, a top cover is fixedly connected to the top of the box-type shell, and two sets of partition plates are installed in the box-type shell. A high-voltage chamber, a transformer chamber and a low-voltage chamber are sequentially formed in the box-type shell from left to right, a plurality of box doors are installed on the box-type shell, a plurality of heat dissipation openings are formed in the box doors, a plurality of louver boards are installed at the heat dissipation positions, and a heat dissipation and air exhaust mechanism is installed in the box-type shell. The preassembled compact box-type transformer substation is compact in structural layout, not only meets all functional requirements, but also enables the volume of the box-type transformer substation to be smaller than that of a European box-type transformer substation with the same capacity, is convenient to transport and berth in front of a wharf, and has the characteristic of good heat dissipation performance through the heat dissipation and air exhaust mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substations, and in particular to a pre-installed compact box-type transformer substation. Background Art

[0002] At present, the box transformers on the market mainly include European box transformers and American box transformers. Among them, the European box transformer adopts high and low voltage switchgear and transformers in structure, and its characteristics are that it can be used in places that require complex power distribution, frequent operation and high management requirements. However, since the European box transformer installs the transformer and ordinary high-voltage electrical equipment in the same metal shell box, the temperature of the transformer room is very high, which causes heat dissipation difficulties; on the other hand, ordinary high-voltage load switches and fuses, and low-voltage switchgear are used in the box, so the European box transformer is larger in size. The American box transformer simplifies the structure of the load switch, ring network switch and fuse into the transformer oil tank and immerses them in oil; the lightning rod also adopts oil-immersed zinc oxide lightning rod; the transformer cancels the oil pillow; the oil tank and radiator are exposed to the air. The characteristics of the American box transformer are compact structure and small size, but the electrical configuration and function are relatively simple, which is not suitable for places with many distribution circuits, frequent operations, and high control and protection management requirements.

[0003] The applicant has found some typical prior art through searching, such as the European-style box-type transformers involved in the Chinese utility model patents with application numbers CN202021892793.X, CN201621057116.X and CN201921239640.2. They often use cooling fans for ventilation and heat dissipation, but the cooling fans themselves will generate heat when used for a long time. The generated heat will not only affect the heat dissipation of the box-type transformer substation, but also affect the service life of the cooling motor itself. To this end, we propose a pre-installed compact box-type transformer substation. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a pre-installed compact box-type substation. When the heat dissipation motor is working, the external coolant will first enter the heat dissipation pipe through the liquid pipe, and then the outside of the heat dissipation motor is cooled. The coolant flowing inside the hollow motor shaft can directly absorb the heat inside the heat dissipation motor, and then the inside of the heat dissipation motor can be cooled internally, which not only avoids the heat generated by the heat dissipation motor from affecting the heat dissipation of the box-type substation, but also improves the service life of the heat dissipation motor, and solves the background problem. The specific technical solution is as follows:

[0005] A pre-installed compact box-type substation, comprising a shell bottom, the top of which is fixedly connected to a box-type shell, characterized in that: a heat dissipation and exhaust mechanism is installed inside the box-type shell; the heat dissipation and exhaust mechanism comprises two groups of heat dissipation frames, the front side of the heat dissipation frame is equipped with fan blades, the heat dissipation frame on the right is fixedly connected with a mounting frame, a heat dissipation motor is bolted to the mounting frame, the heat dissipation motor comprises a front cover, a middle shell and a rear cover, a hollow motor shaft is rotatably installed between the front cover and the rear cover, a plurality of heat dissipation fins are fixedly installed on the outer surface of the middle shell, a group of heat dissipation pipes are commonly installed between the plurality of heat dissipation fins, a first rotating joint is fixedly installed on the rear cover, the hollow motor shaft is rotatably connected to the first rotating joint, a first connecting pipe is fixedly connected between the first rotating joint and one end of the heat dissipation pipe, the other end of the heat dissipation pipe is fixedly connected with a liquid passing pipe, a synchronous transmission assembly is connected between the fan blades on the left and right sides, the hollow motor shaft is fixedly penetrated on the fan blades on the right side, and the fan blades on the left side are rotatably installed on the heat dissipation frame on the left side through a rotating shaft.

[0006] Preferably, a second rotating joint is fixedly installed on the right heat dissipation frame, the second rotating joint is rotationally connected to the hollow motor shaft, and the first liquid outlet pipe is fixedly connected to the second rotating joint.

[0007] Preferably, a plurality of heat dissipation aluminum plates are fixedly installed on the back of the heat dissipation frame, a connecting coil is fixedly installed on the heat dissipation aluminum plate, a connecting pipe is fixedly connected between the connecting coils on the left and right sides, the liquid outlet end of the first liquid outlet pipe is fixedly connected to the liquid inlet end of the connecting coil on the right, and the second liquid outlet pipe is fixedly connected to the connecting coil on the left.

[0008] Preferably, the synchronous transmission assembly includes a connecting belt, the outer surface of the hollow motor shaft is fixedly sleeved with a driving pulley, the outer surface of the rotating shaft on the left fan blade is fixedly sleeved with a driven pulley, and the connecting belt tensioning sleeve is arranged between the driven pulley and the driving pulley.

[0009] Preferably, the front cover, the middle shell and the rear cover are fixedly connected by a plurality of locking bolts, a mover is fixedly mounted on the hollow motor shaft, a stator is fixedly installed inside the middle shell, and the mover is located inside the stator.

[0010] Preferably, a liquid pumping shell is fixedly connected to the back side of the heat dissipation frame on the left side, a liquid pumping impeller is rotatably installed inside the liquid pumping shell via a connecting shaft, the connecting shaft on the liquid pumping impeller is fixedly connected to the rotating shaft on the left fan blade, a coolant inlet pipe and a coolant outlet pipe are installed on the liquid pumping shell, and the coolant outlet pipe is fixedly connected to the liquid passing pipe.

[0011] Preferably, the heat dissipation aluminum plates are corrugated, and corrugated ventilation channels are formed between adjacent heat dissipation aluminum plates.

[0012] Preferably, a dustproof net is installed on the front side of the heat dissipation frame.

[0013] Preferably, a plurality of box doors are installed on the box-type housing, a plurality of heat dissipation openings are opened on the box doors, and a plurality of louvers are installed at the heat dissipation locations.

[0014] Preferably, a top cover is fixedly connected to the top of the box-type housing, two sets of partitions are installed inside the box-type housing, and a high-voltage chamber, a transformer chamber and a low-voltage chamber are sequentially formed inside the box-type housing from left to right.

[0015] The present invention provides a pre-installed compact box-type substation. Compared with the prior art, it has the following advantages:

[0016] Beneficial effects:

[0017] 1. The pre-installed compact box-type substation consists of a shell bottom, a box-type shell, a top cover and a partition, and a high-voltage chamber, a transformer room and a low-voltage chamber are formed inside. The box-type substation of this project has a compact structure layout, which not only meets all functional requirements, but also makes the box-type substation smaller than the European box-type substation of the same capacity, which is convenient for transportation and berthing in front of the wharf, and has good heat dissipation performance through the heat dissipation and exhaust mechanism.

[0018] 2. For this pre-installed compact box-type substation, when the heat dissipation motor is working, the external coolant will first enter the heat dissipation pipe through the liquid pipe, and then dissipate the heat on the outside of the heat dissipation motor. The coolant flowing inside the hollow motor shaft can directly absorb the heat inside the heat dissipation motor, and then dissipate the heat inside the heat dissipation motor, which not only avoids the heat generated by the heat dissipation motor from affecting the heat dissipation of the box-type substation, but also improves the service life of the heat dissipation motor.

[0019] 3. For this pre-installed compact box-type substation, the coolant flowing out of the hollow motor shaft will flow in two sets of connecting coils and connecting pipes, and finally be discharged from the second liquid outlet pipe. The cold source remaining on the coolant will be absorbed by several heat dissipation aluminum plates. The heat dissipation aluminum plates after absorbing the cold can generate a cold source. When the fan blades draw in air, the wind can be turned into cold wind, thereby improving the high-strength heat dissipation of this box-type substation.

[0020] 4. The pre-installed compact box-type substation has a compact structural design: semi-open transformer compartment structure, high-voltage room, low-voltage room and capacitor room;

[0021] 5. To solve the problem of poor heat dissipation in box-type substations, the transformer box adopts a semi-open structure design, and the transformer can have a heat dissipation structure with one side exposed to the outside.

[0022] 6. The box-type transformer has a high degree of integration and a small size, which is only 1 / 3 of the European box-type transformer substation with the same capacity. It not only saves costs but also does not occupy land infrastructure area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure inside the main body of the present invention;

[0026] Figure 3 It is a front schematic diagram of the heat dissipation and exhaust mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of the back side of the heat dissipation and exhaust mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the disassembled structure of the left part of the heat dissipation and exhaust mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the disassembled structure of the right part of the heat dissipation and exhaust mechanism of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the heat dissipation motor of the present invention;

[0031] Figure 8 It is a schematic diagram of the internal structure of the heat dissipation motor of the present invention;

[0032] Fig. 9 It is a schematic diagram of the connection structure between the heat dissipation fins and the heat dissipation pipes of the present invention;

[0033] Fig.10 It is a two-dimensional front view schematic diagram of the main body of the present invention;

[0034] Fig.11 It is a two-dimensional left-side schematic diagram of the main body of the present invention;

[0035] Fig.12 It is a two-dimensional right side schematic diagram of the main body of the present invention;

[0036] Fig.13 It is a two-dimensional rear view schematic diagram of the main body of the present invention.

[0037] In the figure: 1, shell bottom; 2, box-type shell; 3, top cover; 4, heat dissipation and exhaust mechanism; 5, high-voltage chamber; 6, transformer room; 7, low-voltage chamber; 8, connecting coil; 9, heat dissipation aluminum plate; 10, second liquid outlet pipe; 11, connecting pipe; 12, first liquid outlet pipe; 13, second rotary joint; 14, heat dissipation frame; 15, fan blade; 16, heat dissipation motor; 17, liquid extraction shell; 18, connecting belt; 20, mounting frame; 21, first rotary joint; 22, first connecting pipe; 23, liquid pipe; 24, heat dissipation pipe; 25, heat dissipation fin; 26, hollow motor shaft; 27, front cover; 28, rear cover; 29, middle shell; 30, stator; 31, mover; 32, partition; 33, driving pulley; 34, driven pulley. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0041] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0042] Embodiment 1:

[0043] See also Figure 1-13The present invention provides a pre-installed compact box-type substation, including a shell bottom 1, a box-type shell 2 is fixedly connected to the top of the shell bottom 1, a top cover 3 is fixedly connected to the top of the box-type shell 2, two groups of partitions 32 are installed inside the box-type shell 2, and a high-voltage chamber 5, a transformer chamber 6 and a low-voltage chamber 7 are formed in sequence from left to right inside the box-type shell 2, a plurality of box doors are installed on the box-type shell 2, a plurality of heat dissipation ports are opened on the box doors, a plurality of louvers are installed at the heat dissipation location, and a heat dissipation and exhaust mechanism 4 is installed inside the box-type shell 2.

[0044] The heat dissipation and exhaust mechanism 4 includes two groups of heat dissipation frames 14, and the front side of the heat dissipation frames 14 is equipped with fan blades 15. The heat dissipation frame 14 on the right side is fixedly connected with a mounting frame 20, and a heat dissipation motor 16 is bolted to the mounting frame 20. The heat dissipation motor 16 includes a front cover 27, a middle shell 29 and a rear cover 28. A hollow motor shaft 26 is rotatably installed between the front cover 27 and the rear cover 28. A mover 31 is fixedly sleeved on the hollow motor shaft 26. A stator 30 is fixedly installed inside the middle shell 29. A plurality of heat dissipation fins 25 are fixedly installed on the outer surface of the middle shell 29. A group of heat dissipation pipes 24 are installed between the heat fins 25, a first rotary joint 21 is fixedly installed on the back cover 28, the hollow motor shaft 26 is rotatably connected to the first rotary joint 21, a first connecting pipe 22 is fixedly connected between the first rotary joint 21 and one end of the heat dissipation pipe 24, the other end of the heat dissipation pipe 24 is fixedly connected to a liquid passage pipe 23, a synchronous transmission component is connected between the left and right fan blades 15, the hollow motor shaft 26 is fixedly penetrated on the right fan blade 15, and the left fan blade 15 is rotatably installed on the left heat dissipation frame 14 through a rotating shaft.

[0045] This pre-installed compact box-type substation is composed of a shell bottom 1, a box-type shell 2, a top cover 3 and a partition 32, and a high-voltage chamber 5, a transformer room 6 and a low-voltage chamber 7 are formed inside it. The box-type substation of this project has a compact structure layout, which not only meets all functional requirements, but also makes the box-type substation smaller in size than the European box-type substation of the same capacity, which is convenient for transportation and berthing in front of the dock. It has the characteristics of good heat dissipation performance through the heat dissipation and exhaust mechanism 4. When the heat dissipation and exhaust mechanism 4 is used, the heat dissipation motor 16 drives the left and right fan blades 15 to rotate simultaneously through the synchronous transmission component, and the external air will circulate inside and outside the box-type substation. When the heat dissipation motor 16 is working , the external coolant will first enter the heat dissipation pipe 24 through the liquid pipe 23, the coolant flowing in the heat dissipation pipe 24 will absorb the heat in the heat dissipation fins 25, the heat dissipation fins 25 will absorb the heat inside the heat dissipation motor 16, and then the outside of the heat dissipation motor 16 will be cooled, and then the coolant will enter the hollow motor shaft 26 through the first connecting pipe 22, and the coolant flowing in the hollow motor shaft 26 can directly absorb the heat inside the heat dissipation motor 16, and then the inside of the heat dissipation motor 16 can be cooled internally, which not only avoids the heat generated by the heat dissipation motor 16 from affecting the heat dissipation of the box-type substation, but also improves the service life of the heat dissipation motor 16.

[0046] Embodiment 2:

[0047] See also Figure 1-13 The present invention provides a pre-installed compact box-type substation, including a shell bottom 1, a box-type shell 2 is fixedly connected to the top of the shell bottom 1, a top cover 3 is fixedly connected to the top of the box-type shell 2, two groups of partitions 32 are installed inside the box-type shell 2, and a high-voltage chamber 5, a transformer chamber 6 and a low-voltage chamber 7 are formed in sequence from left to right inside the box-type shell 2, a plurality of box doors are installed on the box-type shell 2, a plurality of heat dissipation ports are opened on the box doors, a plurality of louvers are installed at the heat dissipation location, and a heat dissipation and exhaust mechanism 4 is installed inside the box-type shell 2.

[0048] The heat dissipation and exhaust mechanism 4 includes two groups of heat dissipation frames 14, and the front side of the heat dissipation frames 14 is equipped with fan blades 15. The heat dissipation frame 14 on the right side is fixedly connected with a mounting frame 20, and a heat dissipation motor 16 is bolted to the mounting frame 20. The heat dissipation motor 16 includes a front cover 27, a middle shell 29 and a rear cover 28. A hollow motor shaft 26 is rotatably installed between the front cover 27 and the rear cover 28. A mover 31 is fixedly sleeved on the hollow motor shaft 26. A stator 30 is fixedly installed inside the middle shell 29. A plurality of heat dissipation fins 25 are fixedly installed on the outer surface of the middle shell 29. A group of heat dissipation pipes 24 are installed between the heat fins 25, a first rotary joint 21 is fixedly installed on the back cover 28, the hollow motor shaft 26 is rotatably connected to the first rotary joint 21, a first connecting pipe 22 is fixedly connected between the first rotary joint 21 and one end of the heat dissipation pipe 24, the other end of the heat dissipation pipe 24 is fixedly connected to a liquid passage pipe 23, a synchronous transmission component is connected between the left and right fan blades 15, the hollow motor shaft 26 is fixedly penetrated on the right fan blade 15, and the left fan blade 15 is rotatably installed on the left heat dissipation frame 14 through a rotating shaft.

[0049] This pre-installed compact box-type substation is composed of a shell bottom 1, a box-type shell 2, a top cover 3 and a partition 32, and a high-voltage chamber 5, a transformer room 6 and a low-voltage chamber 7 are formed inside it. The box-type substation of this project has a compact structure layout, which not only meets all functional requirements, but also makes the box-type substation smaller in size than the European box-type substation of the same capacity, which is convenient for transportation and berthing in front of the dock. It has the characteristics of good heat dissipation performance through the heat dissipation and exhaust mechanism 4. When the heat dissipation and exhaust mechanism 4 is used, the heat dissipation motor 16 drives the left and right fan blades 15 to rotate simultaneously through the synchronous transmission component, and the external air will circulate inside and outside the box-type substation. When the heat dissipation motor 16 is working , the external coolant will first enter the heat dissipation pipe 24 through the liquid pipe 23, the coolant flowing in the heat dissipation pipe 24 will absorb the heat in the heat dissipation fins 25, the heat dissipation fins 25 will absorb the heat inside the heat dissipation motor 16, and then the outside of the heat dissipation motor 16 will be cooled, and then the coolant will enter the hollow motor shaft 26 through the first connecting pipe 22, and the coolant flowing in the hollow motor shaft 26 can directly absorb the heat inside the heat dissipation motor 16, and then the inside of the heat dissipation motor 16 can be cooled internally, which not only avoids the heat generated by the heat dissipation motor 16 from affecting the heat dissipation of the box-type substation, but also improves the service life of the heat dissipation motor 16.

[0050] Preferably, the high-voltage chamber 5 and the low-voltage chamber 7 constitute a distribution cabin, the transformer room 6 is a semi-open transformer cabin, and the distribution cabin and the semi-open transformer cabin together constitute the electrical cabin of the pre-installed compact box-type substation. The top cover 3 is preferably a honeycomb top cover. By configuring the distribution cabin and the semi-open transformer cabin, the pre-installed compact box-type substation has a structure of electrical compartments + honeycomb top cover + semi-open transformer, which has the characteristics of small size, good heat dissipation performance, and high protection, and can adapt to the "three highs" environment of high temperature, high humidity, and high salt at the dock.

[0051] In addition, the pre-installed compact box-type substation also includes an electrical integrated management system, which is used to control, monitor, protect and measure the power supply to ships of the electrical equipment in the box-type substation. It has functions such as data collection, processing and remote transmission, which is conducive to the information management of the electrical equipment of the box-type substation.

[0052] A second rotary joint 13 is fixedly mounted on the right heat dissipation frame 14 . The second rotary joint 13 is rotatably connected to the hollow motor shaft 26 . The first liquid outlet pipe 12 is fixedly connected to the second rotary joint 13 .

[0053] A plurality of heat dissipation aluminum plates 9 are fixedly installed on the back of the heat dissipation frame 14, and a connecting coil 8 is fixedly installed on the heat dissipation aluminum plate 9. A connecting pipe 11 is fixedly connected between the connecting coils 8 on the left and right sides, and the liquid outlet end of the first liquid outlet pipe 12 is fixedly connected to the liquid inlet end of the connecting coil 8 on the right side, and a second liquid outlet pipe 10 is fixedly connected to the connecting coil 8 on the left side.

[0054] The coolant flowing out of the hollow motor shaft 26 will flow in the two groups of connecting coils 8 and the connecting pipe 11, and finally be discharged from the second liquid outlet pipe 10. The cold source remaining on the coolant will be absorbed by a plurality of heat dissipation aluminum plates 9. The heat dissipation aluminum plates 9 after absorbing the cold can generate a cold source. When the fan blades 15 draw air in, the wind can be converted into cold wind, thereby improving the high-strength heat dissipation of this box-type substation.

[0055] The synchronous transmission assembly includes a connecting belt 18, a driving pulley 33 is fixedly mounted on the outer surface of the hollow motor shaft 26, a driven pulley 34 is fixedly mounted on the outer surface of the rotating shaft on the left fan blade 15, and the connecting belt 18 tensioning sleeve is arranged between the driven pulley 34 and the driving pulley 33.

[0056] When the heat dissipation motor 16 is working, the two sets of fan blades 15 will be driven to rotate simultaneously through the connecting belt 18.

[0057] The front cover 27 , the middle shell 29 and the rear cover 28 are fixedly connected by a plurality of locking bolts, and the mover 31 is located inside the stator 30 .

[0058] The back side of the heat sink 14 on the left side is fixedly connected to a liquid extraction shell 17, and a liquid extraction impeller is rotatably installed inside the liquid extraction shell 17 through a connecting shaft. The connecting shaft on the liquid extraction impeller is fixedly connected to the rotating shaft on the left fan blade 15. A coolant inlet pipe and a coolant outlet pipe are installed on the liquid extraction shell 17, and the coolant outlet pipe is fixedly connected to the liquid passage pipe 23.

[0059] When the heat dissipation motor 16 drives the two sets of fan blades 15 to rotate simultaneously, the heat dissipation motor 16 will also drive the liquid pumping impeller inside the liquid pumping shell 17 to rotate. When the liquid pumping impeller rotates, the coolant is sucked into the liquid passage 23, thereby avoiding the need to add an additional liquid pump.

[0060] The heat dissipation aluminum plate 9 is corrugated, and a corrugated ventilation channel is formed between adjacent heat dissipation aluminum plates 9. When wind passes through the corrugated ventilation channel, the path can be increased, and the contact time between the air and the heat dissipation aluminum plate 9 can be increased, thereby improving the heat dissipation effect of cold air.

[0061] A dustproof net is installed on the front side of the heat dissipation frame 14 .

[0062] Embodiment three:

[0063] It should be understood that this embodiment at least includes all the technical features of the above embodiments, and on the basis of the above embodiments, further specifically describes the pre-installed compact box-type substation described in this application.

[0064] The working principle of the pre-installed compact box-type substation is as follows: the pre-installed compact box-type substation is composed of a shell bottom 1, a box-type shell 2, a top cover 3 and a partition 32, and a high-voltage chamber 5, a transformer room 6 and a low-voltage chamber 7 are formed inside. The box-type substation of this project has a compact structure layout, which not only meets all functional requirements, but also makes the box-type substation smaller in size than the European box-type substation of the same capacity, which is convenient for transportation and berthing in front of the dock, and has good heat dissipation performance through the heat dissipation and exhaust mechanism 4;

[0065] When the heat dissipation and exhaust mechanism 4 is in use, the heat dissipation motor 16 drives the left and right fan blades 15 to rotate simultaneously through the synchronous transmission component, and the external air will circulate inside and outside the box-type substation. When the heat dissipation motor 16 is working, the external coolant will first enter the heat dissipation pipe 24 through the liquid pipe 23, and the coolant circulating in the heat dissipation pipe 24 will absorb the heat in the heat dissipation fins 25, and the heat dissipation fins 25 will absorb the heat inside the heat dissipation motor 16, and then the outside of the heat dissipation motor 16 will be dissipated. After that, the coolant will enter the hollow motor shaft 26 through the first connecting pipe 22. The coolant flowing inside the hollow motor shaft 26 can directly absorb the heat inside the heat dissipation motor 16, and then the inside of the heat dissipation motor 16 can be internally dissipated, which not only avoids the heat generated by the heat dissipation motor 16 from affecting the heat dissipation of the box-type substation, but also improves the service life of the heat dissipation motor 16.

[0066] The coolant flowing out of the hollow motor shaft 26 passes through the first liquid outlet pipe 12, flows in the two groups of connecting coils 8 and the connecting pipe 11, and is finally discharged from the second liquid outlet pipe 10. The cold source remaining on the coolant will be absorbed by a plurality of heat dissipation aluminum plates 9. The heat dissipation aluminum plates 9 after absorbing the cold can generate a cold source. When the fan blades 15 draw air in, the wind can be converted into cold wind, thereby improving the high-strength heat dissipation of the box-type substation.

[0067] When the heat dissipation motor 16 drives the two sets of fan blades 15 to rotate simultaneously, the heat dissipation motor 16 will also drive the liquid pumping impeller inside the liquid pumping shell 17 to rotate. When the liquid pumping impeller rotates, the coolant is sucked into the liquid passage 23, thereby avoiding the need to add an additional liquid pump.

[0068] Preferably, in this embodiment, the pre-installed compact box-type substation further includes a bypass structure, a controller, and a temperature sensor for detecting the temperature of the heat dissipation motor. The bypass structure includes a one-inlet and two-outlet solenoid valve and a bypass branch pipe. The solenoid valve is installed on the liquid inlet pipe 23, one of the outlets is connected to the liquid inlet pipe 23 and the first liquid outlet pipe 12 through the bypass branch pipe, and the inlet and the other outlet connect the liquid inlet pipe 23. When the controller detects through the temperature sensor that the temperature of the heat dissipation motor is less than a preset value, the inlet of the solenoid valve is controlled to be connected to one of the outlets, so that the coolant does not pass through the heat dissipation fan and flows directly from the liquid inlet pipe 23 to the first liquid outlet pipe 12. When the temperature of the heat dissipation motor is greater than or equal to the preset value, the inlet of the solenoid valve is controlled to be connected to the other outlet, so that the coolant flows from the liquid inlet pipe 23 to the heat dissipation pipe 24, and then flows into the first liquid outlet pipe 12.

[0069] In this way, by setting a bypass structure, a controller and a temperature sensor for detecting the temperature of the heat dissipation motor, the pre-installed compact box-type substation can also control the flow direction of the coolant according to the temperature of the heat dissipation motor, and when the temperature of the heat dissipation motor is lower than a preset value, the inlet of the solenoid valve is controlled to be connected to one of the outlets, so that the coolant does not pass through the heat dissipation fan, but flows directly from the liquid inlet pipe 23 into the first liquid outlet pipe 12, thereby further improving the high-strength heat dissipation of the box-type substation.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A pre-installed compact box-type substation, comprising a shell bottom, the top of which is fixedly connected with a box-type housing, characterized in that: The heat dissipation mechanism is installed inside the box-type shell; the heat dissipation mechanism includes two groups of heat frames, fan blades are installed on the front side of the heat frame, and a mounting frame is fixedly connected to the heat frame on the right side, and a heat dissipation motor is bolted on the mounting frame, and the heat dissipation motor includes a front cover, a middle shell and a rear cover, a hollow motor shaft is rotatably installed between the front cover and the rear cover, a plurality of heat dissipation fins are fixedly installed on the outer surface of the middle shell, and a group of heat dissipation pipes are commonly installed between the plurality of heat dissipation fins, and a first rotating joint is fixedly installed on the rear cover, the hollow motor shaft is rotatably connected to the first rotating joint, a first connecting pipe is fixedly connected between the first rotating joint and one end of the heat dissipation pipe, and the other end of the heat dissipation pipe is fixedly connected to a liquid passing pipe, and a synchronous transmission assembly is connected between the fan blades on the left and right sides, the hollow motor shaft is fixedly penetrated on the fan blades on the right side, and the fan blades on the left side are rotatably installed on the heat dissipation frame on the left side through a rotating shaft.

2. A pre-installed compact box-type substation according to claim 1, characterized in that: A second rotating joint is fixedly installed on the right heat dissipation frame, the second rotating joint is rotationally connected to the hollow motor shaft, and the first liquid outlet pipe is fixedly connected to the second rotating joint.

3. A pre-installed compact box-type substation according to claim 2, characterized in that: A plurality of heat dissipation aluminum plates are fixedly installed on the back of the heat dissipation frame, a connecting coil is fixedly installed on the heat dissipation aluminum plate, a connecting pipe is fixedly connected between the connecting coils on the left and right sides, the liquid outlet end of the first liquid outlet pipe is fixedly connected to the liquid inlet end of the connecting coil on the right side, and the second liquid outlet pipe is fixedly connected to the connecting coil on the left side.

4. The pre-installed compact box-type substation according to claim 3 is characterized in that: The synchronous transmission component includes a connecting belt, a driving pulley is fixedly mounted on the outer surface of the hollow motor shaft, a driven pulley is fixedly mounted on the outer surface of the rotating shaft on the left fan blade, and the connecting belt tensioning sleeve is arranged between the driven pulley and the driving pulley.

5. The pre-installed compact box-type substation according to claim 4 is characterized in that: The front cover, the middle shell and the rear cover are fixedly connected by a plurality of locking bolts. A mover is fixedly sleeved on the hollow motor shaft. A stator is fixedly installed inside the middle shell. The mover is located inside the stator.

6. A pre-installed compact box-type substation according to claim 5, characterized in that: A liquid pumping shell is fixedly connected to the back of the left heat sink, and a liquid pumping impeller is rotatably installed inside the liquid pumping shell via a connecting shaft. The connecting shaft on the liquid pumping impeller is fixedly connected to the rotating shaft on the left fan blade. A coolant inlet pipe and a coolant outlet pipe are installed on the liquid pumping shell, and the coolant outlet pipe is fixedly connected to the liquid passage pipe.

7. A pre-installed compact box-type substation according to claim 6, characterized in that: The heat dissipation aluminum plates are corrugated, and corrugated ventilation channels are formed between adjacent heat dissipation aluminum plates.

8. The pre-installed compact box-type substation according to claim 7, characterized in that: A dustproof net is installed on the front side of the heat dissipation frame.

9. The pre-installed compact box-type substation according to claim 8, characterized in that: A plurality of box doors are installed on the box-type shell, a plurality of heat dissipation openings are opened on the box doors, and a plurality of louver plates are installed at the heat dissipation locations.

10. The pre-installed compact box-type substation according to claim 9, characterized in that: A top cover is fixedly connected to the top of the box-type housing, two groups of partitions are installed inside the box-type housing, and a high-voltage chamber, a transformer chamber and a low-voltage chamber are sequentially formed inside the box-type housing from left to right.

Images