Box type substation

Abstract

The present application discloses a box-type substation in the technical field of substation equipment, including a box body and a switch cabinet, with a plurality of vents arranged below the box body; the vents include a plurality of heat dissipation holes arranged in a horizontal direction, a waterproof plate is detachably connected to the inner wall of the box body at the vents, a plurality of water-swelling waterstop strips extending toward different heat dissipation holes are arranged on the waterproof plate, a gap is left between the water-swelling waterstop strips and the heat dissipation holes, the gap is smaller than the area of ​​the water-swelling waterstop strips after expansion, a lifting mechanism for lifting the switch cabinet is arranged on the inner top wall of the box body, the lifting mechanism is provided with a switch, the switch is located on the box body above the vents and contacts the water-swelling waterstop strips. By utilizing the characteristic of the water-swelling waterstop strips that expand and block the heat dissipation holes when in water, heat dissipation and waterproofing are taken into account and the safety of components is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power transformation equipment, and in particular to a box-type substation. Background Art

[0002] The box-type substation is a complete set of distribution equipment in which high-voltage switchgear, power transformer and low-voltage distribution device are combined in one or several boxes according to different wiring methods. It is widely used in urban high-rise buildings, residential areas, scenic areas, factories and mines, wind power generation, public places and temporary equipment. At present, the box-type substation with the largest use in my country is the box-type substation with a voltage level of 10 / 0.4kV and a capacity of 50-1250kVA.

[0003] Box-type substations are divided into modular and prefabricated types according to their product structures; they are divided into terminal wiring type and ring network wiring type according to the wiring method; they can be divided into indoor and outdoor types according to the place of use; they can be divided into integral and split types according to the box structure.

[0004] As box-type substations are promoted, people's requirements for box-type substations are getting higher and higher. Higher power supply reliability, longer service life, less maintenance work, less floor space, simpler on-site installation methods, and stronger applicability have become the core content of research on box-type substations.

[0005] The heat dissipation and waterproof performance of the box-type substation in the prior art cannot be taken into account at the same time. When the outside temperature is high, the temperature inside the box-type substation will gradually rise, which will affect the normal operation of the electrical components in the box. Therefore, more heat dissipation holes will be opened on the box body. Since the electrical components in the box-type substation will also generate a lot of heat when operating, heat dissipation holes will also be set in the middle and lower parts of the box body. For example, the box-type substation with heat dissipation capability disclosed in the prior art CN205509340U includes a box body, a waterproof shed is provided at the upper end of the box body; the waterproof shed is filled with heat insulation cotton; the upper end of the waterproof shed is covered with a reflector; the upper end of the waterproof shed is also installed with a non-powered wind ball; a number of vents are provided under the box body; and fan blades are also provided on both sides of the box body. Heat is dissipated through the vents provided below. However, during heavy rain, the continuous rise of accumulated water can easily overflow the base of the box-type substation. Once a flood occurs, the accumulated water will enter the box body through the lower vents when the water level rises, which is not only easy to damage the electrical components in the box, but also easy to cause leakage and danger. Summary of the invention

[0006] The object of the present invention is to provide a box-type substation to solve the problem that it is difficult to balance heat dissipation and waterproofing in the box-type substation of the prior art.

[0007] The box-type substation of the present invention comprises a box body, a switch cabinet is arranged in the box body, a waterproof shed is arranged at the upper end of the box body, and a plurality of vents are arranged at the lower part of the box body; the vents include a plurality of heat dissipation holes arranged in a horizontal direction, an air circulation cavity is arranged between the switch cabinet and the inner top wall of the box body, a waterproof plate is detachably connected to the inner wall of the box body and located at the vent, a plurality of water-swellable waterstop strips extending toward different heat dissipation holes are arranged on the waterproof plate, a gap is left between the water-swellable waterstop strip and the heat dissipation hole, and the gap is smaller than the area of ​​the water-swellable waterstop strip after expansion, a lifting mechanism for lifting the switch cabinet is arranged in the box body, and the lifting mechanism is provided with a starting switch, and the starting switch is located on the box body above the vent and in contact with the water-swellable waterstop strip.

[0008] Working principle of the present invention: The box-type substation of the present invention is mainly composed of a box body and a switch cabinet placed in the box body. The switch cabinet includes a high-voltage room, a low-voltage room and a transformer room, etc. The components are all located in the switch cabinet, and the box body is located outside the switch cabinet. Since the box-type substation is placed outdoors, a waterproof shed is provided at the upper end of the box body. In order to ensure the heat dissipation effect and isolate the influence of the external environment on the switch cabinet, an air circulation cavity is provided on the inner top wall of the switch cabinet and the box body to accelerate the flow of air. At the same time, a number of vents are provided at the bottom of the box body. The vents are generally arranged relatively to allow air convection to further ensure the heat exchange effect. In general, the waterproof board is arranged at the vent. Since it is detachably connected, it can be easily replaced. Since there is a gap between the water-expanding waterstop strip on the waterproof board and the heat dissipation hole, it basically does not affect the heat dissipation. Once a flood disaster occurs, the water level rises. When the water level rises, the water contacts the heat dissipation hole. When the water-swelling waterstop strip at the hole is blocked, it will expand and fill the heat dissipation hole at that place, which can play a waterproof role. If the water level continues to rise and contacts the water-swelling waterstop strip on the upper layer, the water-swelling waterstop strip here will also expand and block the heat dissipation holes at that place. The water level continues to rise, and the heat dissipation holes are blocked in turn, and finally the entire vent is closed. At this time, in order to prevent the water level from continuing to rise, when the top water-swelling waterstop strip expands, it will resist upward and press the starting switch (the starting switch is push-type, and the button is facing the water-swelling waterstop strip), so that the lifting mechanism is started. The lifting mechanism starts to lift the switch cabinet upward. Since the upper part of the switch cabinet is an air circulation cavity, it will not be disturbed during the lifting process of the lifting mechanism, so that the switch cabinet is lifted to the highest point, avoiding the risk of flooding. After the flood, the waterproof board is removed and replaced with a new water-swelling waterstop strip.

[0009] Beneficial effects of the present invention: Based on the problem that the original box body heat dissipation and waterproofing cannot be taken into account at the same time, the box-type substation of the present invention creatively combines the heat dissipation hole with the water-swelling waterstop strip, and the water-swelling waterstop strip is placed at the heat dissipation hole, but there is a gap between the water-swelling waterstop strip and the heat dissipation hole. When water contacts the water-swelling waterstop strip, the water-swelling waterstop strip expands and blocks the heat dissipation hole. If the water level does not continue to rise, and the water does not contact the upper waterstop strip, it will not expand and block, and will not affect the use of the upper heat dissipation hole. If the water level continues to rise, the water-swelling waterstop strip will block the heat dissipation hole in turn, and finally the switch will be started to lift the switch cabinet, thereby maximizing the safety of components such as the switch cabinet. Compared with the prior art, it takes into account both heat dissipation and waterproofing and ensures the safety of components.

[0010] Furthermore, the two ends of the waterproof board are provided with clamping columns, and the box body is provided with clamping grooves for the clamping columns to be engaged. This is the connection method between the waterproof board and the box body.

[0011] Furthermore, a plastic ring is provided in the slot to abut against the post. In order to make the connection between the waterproof board and the box body more reliable, a plastic ring is provided in the slot to protect the post when taking out and buckling, and to make the connection between the post and the slot tighter.

[0012] Furthermore, the box body also includes a positioning screw, the waterproof plate is provided with a positioning hole, the positioning screw passes through the water-swellable waterstop strip and is threadedly connected to the positioning hole. This is a connection method between the water-swellable waterstop strip and the waterproof plate, which is easy to replace the water-swellable waterstop strip.

[0013] Furthermore, the water-swellable waterstop strip is annular, and a strip hole for heat dissipation is provided in the middle of the water-swellable waterstop strip. In order to achieve a better heat exchange effect of the box, a strip hole for heat dissipation is provided in the middle of the annular water-swellable waterstop strip, which has a better heat dissipation effect, and the strip hole will be quickly expanded and covered when expanding.

[0014] Furthermore, the lifting mechanism includes a plurality of hydraulic cylinders, the cylinder bodies of the hydraulic cylinders are connected to the inner top wall of the box body, and the start switch is also connected to the electrical signals of the plurality of hydraulic cylinders. The plurality of hydraulic cylinders are started simultaneously to ensure the smooth lifting of the switch cabinet.

[0015] Preferably, a hanging rope is provided at the end of the piston rod of the hydraulic cylinder, and a lifting lug connected to the hanging rope is provided at the top of the switch cabinet.

[0016] Preferably, the end of the piston rod of the hydraulic cylinder is provided with an electromagnet, and the top of the switch cabinet is magnetically connected to the electromagnet.

[0017] Preferably, the lifting mechanism comprises a plurality of hydraulic cylinders connected to the side walls of the box body, and the side walls of the switch cabinet are provided with support plates connected to the piston rods of the hydraulic cylinders.

[0018] The above three are all connection methods between the switch cabinet and the lifting mechanism. Select one according to your needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial cross-sectional view of the box-type substation embodiment 1 of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the middle waterproof board. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods:

[0022] The reference numerals in the drawings of the specification include: box body 1, switch cabinet 2, support plate 3, hydraulic cylinder 4, heat dissipation hole 5, start switch 6, waterproof plate 7, clamping column 8, water-swellable water stop strip 9, and positioning screw 10.

[0023] Embodiment 1 is basically as attached Figure 1 and Figure 2 As shown: the box-type substation of the present invention comprises a box body 1, a switch cabinet 2 is arranged in the box body 1, a waterproof shed is arranged at the upper end of the box body 1, a door is arranged on the box body 1, and waterproof strips are arranged at the joints between the door and the box body 1, and a plurality of vents are arranged below the box body 1; the vents include four heat dissipation holes 5 arranged in the horizontal direction, an air circulation cavity is arranged between the switch cabinet 2 and the inner top wall of the box body 1, a waterproof plate 7 is arranged on the inner wall of the box body 1 at the vent, and clamping columns 8 are arranged at both ends of the waterproof plate 7, a clamping groove for the clamping column 8 to be embedded is arranged on the box body 1, and a plastic ring abutting against the clamping column 8 is arranged in the clamping groove; the waterproof plate 7 is provided with a plastic ring on the inner wall of the waterproof plate 7. Four water-swellable waterstop strips 9 are provided, which extend toward different heat dissipation holes 5 respectively. There is a gap between the water-swellable waterstop strips 9 and the heat dissipation holes 5. The gap is smaller than the area of ​​the water-swellable waterstop strips 9 after expansion, which can ensure that the heat dissipation holes 5 can be blocked by the water-swellable waterstop strips 9 after expansion. A lifting mechanism for lifting the switch cabinet 2 is provided in the box body 1. The lifting mechanism is provided with a starting switch 6. The starting switch 6 is located on the box body 1 above the vent and contacts the water-swellable waterstop strips 9. As long as the uppermost water-swellable waterstop strip 9 expands, the starting switch 6 will be pressed to make the lifting mechanism work to lift the switch cabinet 2.

[0024] The waterproof plate 7 is provided with a positioning hole and a positioning screw 10, the positioning screw 10 passes through the water-swellable waterstop strip 9 and is threadedly connected to the positioning hole, the lifting mechanism includes at least four rings arranged on the inner wall of the box body and a hydraulic cylinder 4 connected to the side wall of the box body 1, the starting switch 6 is connected to the electrical signals of the multiple hydraulic cylinders 4, the side wall of the switch cabinet 2 is provided with a support plate 3 connected to the piston rod of the hydraulic cylinder 4, and the support plate 3 is horizontally arranged.

[0025] During the specific implementation process, the waterproof plate 7 is arranged at the vent. Since the card column 8 can be pressed into the card slot and the card column 8 can be taken out of the card slot, it can be easily replaced. There is a gap between the water-swellable waterstop strip 9 on the waterproof plate 7 and the heat dissipation hole 5, so under normal circumstances, it does not affect the heat dissipation. Once a flood disaster occurs and the water level rises, when the water level rises and the water contacts the lowest layer of the water-swellable waterstop strip 9 at the heat dissipation hole 5, the water-swellable waterstop strip 9 will expand and fill the heat dissipation hole 5 at that place, which can play a waterproof role. If the water level continues to rise and contacts the water-swellable waterstop strip 9 on the upper layer, then the water-swellable waterstop strip 9 here will also It will expand and block the heat dissipation holes 5 at that place. The water level continues to rise, and the heat dissipation holes 5 are blocked in turn, and finally the entire vent is closed. At this time, in order to prevent the water level from continuing to rise, when the topmost water-swellable waterstop strip 9 expands, it will press upward and press the starting switch 6 of the hydraulic cylinder 4, so that the hydraulic cylinder 4 is started, and the piston rod presses the support plate 3, so that the switch cabinet 2 is lifted. Since the upper part of the switch cabinet 2 is an air circulation cavity, it will not be disturbed during the lifting process of the hydraulic cylinder 4, and then the switch cabinet 2 is lifted to the highest point, avoiding the risk of flooding. After the flood, the waterproof board 7 is removed and replaced with a new water-swellable waterstop strip 9 and it can be used again.

[0026] The only difference between Example 2 and Example 1 is that the water-swellable waterstop strip 9 is arranged in a ring shape, and a strip hole for heat dissipation is provided in the middle of the water-swellable waterstop strip 9.

[0027] The only difference between Example 3 and Example 1 is that the cylinder body of the hydraulic cylinder 4 is connected to the inner top wall of the box body 1, the end of the piston rod of the hydraulic cylinder 4 is provided with a hanging rope, and the top of the switch cabinet 2 is provided with a lifting ear connected to the hanging rope.

[0028] The only difference between Example 4 and Example 1 is that the cylinder body of the hydraulic cylinder 4 is connected to the inner top wall of the box body 1, the end of the piston rod of the hydraulic cylinder 4 is provided with an electromagnet, and the top of the switch cabinet 2 is magnetically connected to the electromagnet.

Claims

1. A box-type substation, comprising a box, a switch cabinet is arranged in the box, a waterproof shed is arranged at the upper end of the box, a plurality of vents are arranged at the lower part of the box, and a door is arranged on the box; the characteristics are: Waterproof strips are provided at the joints between the door and the box body, the vent includes a plurality of heat dissipation holes arranged in a horizontal direction, an air circulation cavity is provided between the switch cabinet and the inner top wall of the box body, a waterproof plate is detachably connected to the inner wall of the box body and located at the vent, a plurality of water-swelling waterstop strips are provided on the waterproof plate and extend toward different heat dissipation holes respectively, a gap is left between the water-swelling waterstop strip and the heat dissipation hole, the gap is smaller than the area of ​​the water-swelling waterstop strip after expansion, a lifting mechanism for lifting the switch cabinet is provided in the box body, the lifting mechanism is provided with a starting switch, the starting switch is located on the box body above the vent and contacts the water-swelling waterstop strip; clamping columns are provided at both ends of the waterproof plate, a clamping groove for the clamping column to be engaged is provided on the box body; a plastic ring abutting against the clamping column is provided in the clamping groove.

2. The box-type substation according to claim 1 is characterized in that: It also includes a positioning screw. The waterproof plate is provided with a positioning hole. The positioning screw passes through the water-swellable water stop strip and is threadedly connected to the positioning hole.

3. The box-type substation according to claim 2 is characterized in that: The water-swellable water-stop strip is annular, and a strip hole for heat dissipation is provided in the middle of the water-swellable water-stop strip.

4. The box-type substation according to claim 3 is characterized in that: The lifting mechanism comprises a plurality of hydraulic cylinders, the cylinder bodies of the hydraulic cylinders are connected to the inner top wall of the box body, and the start switch is also connected to the electrical signals of the plurality of hydraulic cylinders.

5. The box-type substation according to claim 4 is characterized in that: A hanging rope is arranged at the end of the piston rod of the hydraulic cylinder, and a lifting lug connected with the hanging rope is arranged on the top of the switch cabinet.

6. The box-type substation according to claim 5, characterized in that: The end of the piston rod of the hydraulic cylinder is provided with an electromagnet, and the top of the switch cabinet is magnetically connected to the electromagnet.

7. The box-type substation according to claim 6 is characterized in that: The lifting mechanism comprises a plurality of hydraulic cylinders connected to the side walls of the box body, and the side walls of the switch cabinet are provided with support plates connected to the piston rods of the hydraulic cylinders.

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