CN216362206U

CN216362206U - Waterproof power supply cabinet

Info

Publication number: CN216362206U
Application number: CN202122266825.6U
Authority: CN
Inventors: 丁铮; 柏广洲; 殷宪波; 高桂营
Original assignee: Qingdao CCS Electric Corp
Current assignee: Qingdao CCS Electric Corp
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-04-22
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to a waterproof power supply cabinet, wherein at least one air inlet is arranged on the side surface of a cabinet body, an air inlet frame structure is assembled on the air inlet, a plurality of blades arranged in parallel are arranged in the air inlet frame structure, two adjacent blades correspond to each other and at least form a first guide part and a first blocking part, the first guide part is arranged towards the first blocking part and is used for guiding water or water vapor to the first blocking part, and the first blocking part is used for blocking the water or the water vapor; the air inlet frame structure is also provided with a drain hole for draining water flowing down from the first blocking part to the outside of the air inlet window body. According to the technical scheme, water and water vapor in the air entering the cabinet body are effectively filtered, the water and the water vapor are prevented from influencing the electrical insulation performance of the cabinet body, and therefore the safety is improved.

Description

Waterproof power supply cabinet

Technical Field

The present invention relates generally to the field of power supply systems. More particularly, the present invention relates to a waterproof power supply cabinet.

Background

Oil fields, mines and the like are often in the field, and common power supply and distribution lines cannot be laid in place. Therefore, in these oil fields, mines, and other scenes, it is necessary to provide independent power supply equipment, directly obtain power from the high voltage network, and then step down the voltage to obtain a voltage suitable for the equipment. Such power supply equipment may be a power supply cabinet, which includes one or more cabinet bodies, and different equipment is installed in different cabinet bodies, which may include, for example, a power inlet cabinet, a transformer cabinet and a frequency conversion cabinet; for example, a transformer cabinet includes a transformer, and a primary side of the transformer is connected to a power grid and is used for obtaining a power supply voltage from a high-voltage power grid and transforming the power supply voltage to obtain a voltage suitable for equipment. The frequency conversion cabinet comprises a frequency converter, and the frequency converter is connected with the secondary side of the transformer to carry out frequency conversion processing on the voltage after voltage transformation.

Inevitably, the electrical equipment in the power supply cabinet needs to dissipate heat. Common heat dissipation systems include air-cooled systems. For air-cooled systems, heat exchange with the air outside the power cabinet is required. Because the outdoor environment that the power supply cabinet is located is comparatively abominable, weather such as sand and dust, precipitation occasionally takes place. Therefore, when the air cooling system possibly introduces the outside air into the power supply cabinet, water and water vapor carried by the outside air are brought into the cabinet body, so that the insulation performance of the transformer is influenced, and certain potential safety hazards are brought. Therefore, it is necessary to adopt a waterproof measure to prevent water or moisture from entering the inside of the power supply cabinet.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power supply cabinet, which is used for at least solving the problem of water resistance of the power supply cabinet.

In order to solve the problems, the utility model provides the following technical scheme:

a waterproof power supply cabinet comprises a plurality of cabinet bodies, wherein at least one air inlet and at least one air outlet are formed in the side face of each cabinet body, and an air inlet window body is assembled on each air inlet; the air inlet window body comprises an air inlet frame structure, a plurality of blades arranged in parallel are arranged in the air inlet frame structure, two adjacent blades correspond to each other to form at least a first guide part and a first blocking part, the first guide part faces the first blocking part and is arranged at a set included angle with the first blocking part to guide water or water vapor to the first blocking part, and the first blocking part is used for blocking the water or the water vapor; the air inlet frame structure is also provided with a drain hole for draining water flowing down from the first blocking part to the outside of the air inlet window body.

In one embodiment, the end of the first blocking part forms a second guiding part, and the first guiding part is connected with the second blocking part; the second guide part faces the second blocking part and is arranged at a set included angle with the second blocking part.

In one embodiment, the end of the second blocking part forms a third guiding part, and the second guiding part is connected with the third blocking part; the third guide part faces the third blocking part and is arranged at a set included angle with the third blocking part.

In one embodiment, the end of the third blocking part forms a fourth guiding part, and the third guiding part is connected with the fourth blocking part; the fourth guide portion faces the fourth blocking portion and is arranged at a set included angle with the fourth blocking portion.

In one embodiment, the leaflets are formed by a plurality of flaps, the flaps of adjacent leaflets being parallel to one another.

In one embodiment, the air inlet frame structure comprises an outer frame and an inner frame, the inner frame faces the outside of the air inlet, and the outer frame faces the inside of the air inlet; the blades are arranged between the outer frame and the inner frame.

In one embodiment, filter cotton is arranged inside the inner frame and used for filtering air impurities; the filter cotton cover is arranged on the outer side of the filter cotton and used for fixing the filter cotton.

In one embodiment, a protective net is arranged outside the filter cotton cover and used for protecting the air inlet window body.

In one embodiment, the air outlet is provided with an air outlet window body, the air outlet window body comprises an air outlet frame structure and a louver, and the end of the louver protrudes towards the outer side of the air outlet.

In one embodiment, the air inlet is disposed below the first side surface of the power supply cabinet, and the air outlet is disposed above the first side surface of the power supply cabinet.

According to the technical scheme provided by the utility model, an air inlet and an air outlet are arranged on the side face of a cabinet body, an air inlet window body is arranged on the air inlet, the air inlet window body comprises an air inlet frame structure and a plurality of groups of blades in the air inlet frame structure, the plurality of groups of blades are arranged in parallel, and a guide-blocking structure is formed between the adjacent blades to block water or vapor from entering. The guide-blocking structure can be arranged in one or even a plurality of air inlet channels inside the window body, so that one-stage or multi-stage waterproofing is realized, particularly, the next-stage waterproofing can block the residual water or water vapor in the previous-stage waterproofing process again, and the multi-stage waterproofing structure can better realize the waterproofing function. Because the water and the steam in the air entering the cabinet body are filtered, the electric insulating property of the cabinet body is prevented from being influenced by the water and the steam, and the safety is improved.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

fig. 1 is a schematic structural diagram of a power supply cabinet according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of an intake vent structure according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

fig. 5 is a structural diagram of an outlet window body according to an embodiment of the present invention;

FIG. 6 is a sectional view taken along line B-B of FIG. 5;

fig. 7 is a schematic view of a state of a window with a certain air output according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it should be understood by those skilled in the art that the embodiments described below are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 shows a power supply cabinet. The power supply cabinet can be used in occasions such as oil fields, mines and the like, and has the function of outputting electric energy outwards to drive large-scale industrial equipment, for example, providing electric energy for a motor to drive oil extraction equipment, drilling equipment and the like. The main principle of the power supply cabinet is that high-voltage power is connected from a power grid, voltage reduction processing is carried out, then frequency conversion processing is carried out, and finally low-voltage alternating current with adjustable power and frequency is output (the low voltage is relative to the input high-voltage power). Generally, a transformer is arranged in a power supply cabinet, and the primary side of the transformer is connected with a high-voltage power grid and used for obtaining electric energy from the high-voltage power grid and transforming voltage to obtain voltage suitable for equipment; and a frequency converter is arranged on the secondary side of the transformer for frequency conversion treatment.

As shown in fig. 1, a power supply cabinet 1 includes a power supply cabinet 2, a transformer cabinet 3, and a frequency conversion cabinet 4, which are sequentially arranged from left to right (in the direction shown in the figure). The inlet box 2 is used for connecting high voltage power, for example, a high voltage cable is connected through an inlet box 21 on one side wall of the inlet box 2, and high voltage power is led into the power supply cabinet 1. A transformer is arranged in the transformer cabinet 3, and the transformer carries out voltage reduction processing on input high-voltage alternating current; for example, the primary side of the transformer is connected with high-voltage power accessed from the inlet cabinet 2, and the secondary side of the transformer generates low-voltage alternating current power. The frequency conversion cabinet 4 is internally provided with a frequency converter, and the frequency converter is used for performing frequency conversion processing on the low-voltage alternating current from the secondary side of the transformer, for example, the frequency conversion processing comprises rectification processing and inversion processing.

As shown in fig. 1, a heat dissipation fan is disposed above the frequency conversion cabinet 4 for dissipating heat of the frequency converter. The transformer cabinet 3 is located between the inlet cabinet 1 and the frequency converter 4, and the heat productivity of the transformer itself is large, so the transformer also needs to dissipate heat. In one embodiment, the heat dissipation duct in the transformer cabinet may be designed to supply air from below one side wall of the transformer cabinet 3 and to supply air from above the side wall. As shown in fig. 1, an air inlet and an air outlet are provided on one side wall of the transformer cabinet 3, and include a first air inlet 31 and a second air inlet 32 below the side wall, and a first air outlet 33 and a second air outlet 34 above the side wall. Outside air enters the bottom in the transformer cabinet 3 through the first air inlet 31 and the second air inlet 32 and then reaches the top in the transformer cabinet 3 from the bottom in the transformer cabinet 3, so that the air exchanges heat with the transformer to cool the transformer and is heated, and the heated air returns to the outside of the transformer cabinet 3 from the first air outlet 33 and the second air outlet 34 above the side wall of the transformer cabinet 3, thereby forming a heat dissipation cycle. In the heat dissipation cycle, a fan may be installed to improve heat dissipation efficiency. The second air inlet 32 has a smaller area than the first air inlet 31, and is used for supplementing the first air inlet 31 and increasing the air intake entering the cabinet.

In industrial occasions such as oil fields, mines and the like, the power supply cabinet 1 is generally placed in an outdoor environment, and the outdoor environment is severe, such as sand, dust, precipitation and the like, which sometimes happens. According to the introduction of the heat dissipation system, the outside air can enter the inside of the transformer cabinet 3, and the water vapor carried by the outside air can enter the inside of the cabinet body, so that the insulation performance of the transformer is influenced, and certain potential safety hazards are brought. Therefore, it is necessary to adopt a waterproof measure to prevent water and moisture from entering the interior of the transformer cabinet 3, for example, a waterproof structure is installed on the first air inlet 31 and the second air inlet 32.

Fig. 2 to 4 show a waterproof intake port window structure installed on the first intake port 31. It should be noted that the second air inlet 32 may also have the same structure.

As shown in fig. 2, the intake vent installed on the first intake port 31 includes an intake port frame structure and a protection net 311 in the intake port frame structure. As shown in fig. 3, which is a sectional view taken along the line a-a of fig. 2, the intake opening frame structure includes an outer frame 314 and an inner frame 313, the inner frame 313 faces the outside of the cabinet, and the outer frame 314 faces the inside of the cabinet, as shown in fig. 3. Wherein the outer frame 314 surrounds the inner frame 313, and the outer frame 314 is provided with a mounting structure 318 (e.g., a flange) for fixing with the cabinet to mount the entire intake window into the first intake port 31. In order to improve the sealing performance between the air inlet window and the cabinet body, a sealing groove 317 is further formed on the mounting structure 318. The inner frame 313 is provided with filter cotton 315, the outer side of the filter cotton 315 is covered with a filter cotton cover, and the outer side of the filter cotton cover is provided with the protective net 311. The filter cotton 315 is used for filtering impurities such as dust in air, the filter cotton cover is used for fixing the filter cotton 315, and the protection net 311 is used for protecting the air inlet window body, for example, the protection net 311 can prevent the window body from being damaged by large solid impurities. A cotton filter cover locking nose 316 is arranged at one end of the cotton filter cover and used for locking the cotton filter cover. When the filter cotton cover and the filter cotton need to be cleaned and replaced, the filter cotton cover locking nose 316 can be opened, and the filter cotton cover and the filter cotton can be taken out. The blades 312 are disposed between the outer frame 314 and the inner frame 313, and in this embodiment, the blades 312 are disposed in a vertical direction, so that the cross section of the blades 312 can be seen in a zigzag structure in fig. 3. The blades 312 play a main role of waterproof, and water blocked by the blades 312 can be discharged out of the air inlet window and the cabinet body through the water discharge holes 320 on the inner frame and the water discharge holes 319 on the outer frame. The blade 312 extends in the same direction as the axial direction of the drainage holes 319, 320.

While the product structure of the subject technology is generally described above, the structure of the blade 312 is further described below, it being understood that the following description of the blade 312 is exemplary and not limiting.

Fig. 4 is a partially enlarged view of fig. 3, and fig. 4 shows the first vane 11, the second vane 12, the third vane 13, and the fourth vane 14. Two adjacent blades are mutually matched and can play a role of water resistance, so that the first blade 11 and the second blade 12 can be regarded as one group, the third blade 13 and the fourth blade 14 can be regarded as one group, and the second blade 12 and the third blade 13 can also be regarded as one group. A set of the first blade 11 and the second blade 12 will be described as an example.

As shown in fig. 4, the first vane 11 includes a first guide portion 111, and the second vane 12 includes a first blocking portion 121; after water or vapor passes through the filter cotton 315, the water or vapor is firstly guided to the first blocking portion 121 by the first guiding portion 111 and collides with the first blocking portion 121, the inner surface of the first blocking portion 121 (i.e., the surface opposite to the first blade 11) blocks the entering water or vapor, and the water flows into the water drainage holes 320 on the inner frame below the blade 312 under the action of gravity and is drained out of the air inlet window and the cabinet body through the water drainage holes 320 on the inner frame. The first guide part 111 and the first blocking part 121 achieve a first level of waterproofing.

As shown in fig. 4, the first guide portion 111 is located at the front end of the first flap of the first vane 11, and the first blocking portion 12 is located on the inner surface of the first flap of the second vane 12. The first flaps of the first leaf 11 and the second leaf 12 are arranged in the same direction (for example parallel) and their inner sides form a channel; the water/steam passing through the first guide part 111 and the first blocking part 121 continues to travel forward through the passage.

A second guide portion 122 is formed at the rear end of the first flap of the second blade 12, and a second blocking portion 112 is formed on the inner surface (i.e., the surface opposite to the second blade 12) of the second flap of the first blade 11. The water/vapor is guided to the second blocking portion 112 by the second guiding portion 122, the second blocking portion 112 blocks the entering water/vapor, and the water flows to the water discharge hole 320 along the folded plate where the second blocking portion 112 is located under the action of gravity. The second guide portion 122 and the second blocking portion 112 achieve a second level of waterproofing.

The second flaps of the first leaf 11 and the second flaps of the second leaf 12 are arranged in the same direction (for example, parallel) and the inner sides thereof form a channel; the water/steam passing through the second guide part 121 and the second blocking part 112 continues to travel forward through the passage.

A third guide portion 113 is formed at the rear end of the second flap of the first blade 11, a third blocking portion 123 is formed at the inner surface of the third flap of the second blade 12, water/steam is guided to the third blocking portion 123 by the third guide portion 113, the third blocking portion 123 blocks the entering water/steam, and the water flows into the water discharge hole 320 along the flap where the third blocking portion 123 is located by gravity. The third guide part 113 and the third barrier part 123 achieve a third level of waterproofing.

The third flaps of the first leaf 11 and the second leaf 12 are arranged in the same direction (for example, parallel) and the inner sides thereof form a channel; the water/steam passing through the third guide 113 and the third barrier 123 continues to travel forward through the passage.

A fourth guide portion 124 is formed at the rear end of the third flap of the second blade 12, and a fourth blocking portion 114 is formed on the inner surface of the fourth flap of the first blade 11. The water/vapor is guided to the fourth blocking portion 114 by the fourth guiding portion 124, the fourth blocking portion 114 blocks the entering water/vapor, and the water flows into the drainage hole 319 along the flap where the fourth blocking portion 114 is located under the action of gravity. The fourth guide part 124 and the fourth blocking part 114 achieve fourth-stage waterproofing.

In summary, a set of blades formed by the first blade 11 and the fourth blade 12 achieves four-stage water resistance, each blade comprises four folded plates, an included angle is formed between every two adjacent folded plates, the folded plates corresponding to the first blade 11 and the second blade 12 are in the same direction and are basically parallel, a zigzag channel is formed between the first blade 11 and the second blade 12, air enters the cabinet body through the channel, and water/water vapor in the air is blocked for many times in the process of traveling. Wherein water can flow down along the flap directly and water vapor can condense on the flap as water droplets flowing down along the flap.

In other embodiments, in order to improve the waterproof effect, fifth and sixth guide portions, fifth and sixth blocking portions, and the like may be further added. Of course, the number of guides and stops may also be reduced, for example by eliminating the fourth guide and stop.

The air inlet structure of the cabinet is described above, and the air outlet structure of the cabinet will be described in detail below. Fig. 5 to 7 show the window structure of the first outlet vent 33. It should be noted that the window structure shown in fig. 5 to 7 can also be applied to the second outlet 34. Fig. 5 shows a front view of the outlet window structure, fig. 6 shows a cross-sectional view along the direction B-B of fig. 5, and fig. 7 shows a state that the louvers are opened at a small angle.

As shown in fig. 5, the outlet window includes an outlet frame structure 331 and louvers 332. The louvers 332 are arranged in a horizontal direction. As shown in fig. 6 and 7, the louvers 332 are hinged to the outlet frame structure 331, for example, to a vertical rib structure 334, forming a hinge end 333. Therefore, the louvers 332 can perform pitching motion, so that the louvers 332 are in the vertical direction when no air output exists and cover the air outlet window body; when a certain amount of air is discharged, the louvers 332 form a certain included angle with the vertical direction (as shown in fig. 6 and 7), and air in the cabinet flows out of the cabinet body along the gaps between the louvers 332. As shown in fig. 6, in order to prevent external water from entering the cabinet through the air outlet, the ends of the louvers 332 are bent to form outward protrusions, so that external water is prevented from entering the inside of the cabinet through gaps between the louvers.

In conclusion, the power supply cabinet is provided with the air inlet window body, so that water and water vapor can be effectively prevented from entering the cabinet body. Further, the air outlet window body can prevent water and water vapor from entering the cabinet body.

In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected," and the like, are to be construed broadly unless otherwise expressly specified or limited. For example, with the term "coupled", it can be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

From the above description of the present specification, those skilled in the art will also appreciate that the terms "first" or "second", etc. used in the present specification to refer to a number or ordinal number are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.

While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the utility model described herein may be employed in practicing the utility model. It is intended that the following claims define the scope of the utility model and that the module compositions, equivalents, or alternatives falling within the scope of these claims be covered thereby.

Claims

1. A waterproof power supply cabinet comprises a plurality of cabinet bodies and is characterized in that at least one air inlet and at least one air outlet are formed in the side face of each cabinet body, and an air inlet window body is assembled on each air inlet;

the air inlet window body comprises an air inlet frame structure, a plurality of blades arranged in parallel are arranged in the air inlet frame structure, two adjacent blades correspond to each other to form at least a first guide part and a first blocking part, the first guide part faces the first blocking part and is arranged at a set included angle with the first blocking part to guide water or water vapor to the first blocking part, and the first blocking part is used for blocking the water or the water vapor;

the air inlet frame structure is also provided with a drain hole for draining water flowing down from the first blocking part to the outside of the air inlet window body.

2. The waterproof power supply cabinet according to claim 1, wherein a second guiding portion is formed at a distal end of the first blocking portion, and the second blocking portion is connected to the first guiding portion;

the second guide part faces the second blocking part and is arranged at a set included angle with the second blocking part.

3. The waterproof power supply cabinet according to claim 2, wherein a third guiding portion is formed at a distal end of the second blocking portion, and the second guiding portion is connected with the third blocking portion;

the third guide part faces the third blocking part and is arranged at a set included angle with the third blocking part.

4. The waterproof power supply cabinet according to claim 3, wherein a fourth guiding portion is formed at a distal end of the third blocking portion, and the fourth blocking portion is connected to the third guiding portion;

the fourth guide portion faces the fourth blocking portion and is arranged at a set included angle with the fourth blocking portion.

5. A waterproof power supply cabinet according to claim 4, wherein the blades are formed by a plurality of flaps, the flaps of adjacent blades being parallel to one another.

6. The waterproof power supply cabinet according to claim 1, wherein the air inlet frame structure comprises an outer frame and an inner frame, the inner frame faces the outside of the air inlet, and the outer frame faces the inside of the air inlet;

the blades are arranged between the outer frame and the inner frame.

7. The waterproof power supply cabinet according to claim 6, wherein filter cotton is arranged inside the inner frame and used for filtering air impurities; the filter cotton cover is arranged on the outer side of the filter cotton and used for fixing the filter cotton.

8. The waterproof power supply cabinet according to claim 7, wherein a protective net is arranged outside the filter cotton cover and used for protecting the air inlet window.

9. The waterproof power supply cabinet according to claim 1, wherein an air outlet window is assembled on the air outlet, the air outlet window comprises an air outlet frame structure and a louver, and the end of the louver protrudes towards the outside of the air outlet.

10. The waterproof power supply cabinet according to any one of claims 1 to 9, wherein the air inlet is disposed below the first side surface of the power supply cabinet, and the air outlet is disposed above the first side surface of the power supply cabinet.