Box-type substation

Abstract

The utility model relates to a box-type substation, which comprises a shell (1), a square mounting port (11) is arranged on the side part of the shell (1), and a mounting box (2) is fixed on the inner side of the mounting port (11); an air inlet (20) is formed in the rear end of the mounting box (2), a centrifugal fan is arranged in the mounting box (2), and an outlet of the centrifugal fan directly faces the air inlet (20); a filter cartridge (3) is detachably mounted on the front side in the mounting box (2), the front end and the rear end of the filter cartridge (3) are open, an air inlet channel is formed in the inner side of the filter cartridge (3), and an air filter (32) is detachably fixed in the filter cartridge (3) and covers the cross section of the air inlet channel of the filter cartridge (3). The box-type transformer substation is of an integrated structure, so that the box-type transformer substation can be conveniently moved only by the aid of rotating wheels or a crane; moreover, the air filter (32) can be conveniently taken out for replacement only by disassembling the filter cartridge (3) by a worker.

Description

Technical Field

[0001] The utility model relates to a box-type transformer substation, in particular to the structure of a box-type transformer substation provided with a ventilation and heat dissipation mechanism. Background Art

[0002] A box-type substation is a type of power distribution facility, referred to as "box-type substation", also known as a prefabricated substation or prefabricated substation. It has a steel structure shell, and the shell is equipped with high-voltage switchgear, distribution transformer equipment, low-voltage distribution equipment and other facilities. It is an important part of the power system.

[0003] Compared to traditional civil substations and distribution stations, box-type substations offer advantages such as portability and high installation efficiency. Common box-type substations on the market feature a built-in ventilation and heat dissipation system consisting of a ventilation fan and filter screen to ensure dryness and a suitable temperature inside the box-type substation. In chemical production environments, this ventilation and heat dissipation system also requires an air filter capable of removing salt mist to prevent corrosion of metal equipment and extend its service life. Air filters reduce air volume, so centrifugal fans are also required to generate more air to ensure that the air exchange rate of the air filter meets the ventilation requirements.

[0004] However, air filters are not only large and bulky, but also must be removed and replaced regularly. Existing box-type substations lack an easily disassembled installation structure for air filters. Air filters can only be installed in a box separated from the box-type substation body, resulting in a complicated structure and inconvenient movement of the box-type substation. Utility Model Content

[0005] The purpose of the utility model is to provide a box-type transformer substation which is suitable for use in a chemical production environment, is easy to move, and is convenient for replacing air filters.

[0006] To achieve the above-mentioned purpose, the present invention provides a box-type substation, comprising a housing 1, an installation box 2, a centrifugal fan 22, a filter cartridge 3, and an air filter 32. The interior of the housing 1 is used to install substation equipment, and a square installation port 11 and a plurality of ventilation ports 12 are provided on the side of the housing (1).

[0007] The installation box 2 is fixed inside the installation opening 11 and communicates with the outside through the installation opening 11 . An air inlet 20 is provided at the rear end of the installation box 2 .

[0008] The centrifugal fan 22 is disposed inside the installation box 2 , and the outlet of the centrifugal fan 22 faces the air inlet 20 .

[0009] The filter cartridge 3 has a shape matching that of the mounting box 2 and is detachably mounted on the front side of the centrifugal fan 22. The front and rear ends of the filter cartridge 3 are open, and an air inlet channel is formed inside.

[0010] The air filter 32 is detachably fixed in the filter cartridge 3 . The air filter 32 at least includes a high-efficiency air filter 3203 covering the cross section of the inner air inlet channel of the filter cartridge 3 .

[0011] Because the box-type substation's housing 1, mounting box 2, centrifugal fan 22, filter cartridge 3, and air filter 32 form an integrated structure with the housing 1, the box-type substation can be easily moved using wheels 13 or a crane. To replace the air filter 32, the operator simply removes the filter cartridge 3 from the outside of the housing 1 and removes the air filter 32 for replacement.

[0012] Preferably, an opening 37 is provided on the upper side of the filter cartridge 3 , and a detachable cover plate 38 is fixed on the opening 37 .

[0013] The left and right inner walls of the filter cartridge 3 are respectively provided with vertical first slide grooves 323 , which face the edge of the opening 37 , and the left and right ends of the HEPA filter 3203 are respectively fixed by the first slide grooves 323 .

[0014] When the air filter 32 needs to be replaced, the staff only needs to remove the filter cartridge from the outer side 3 of the housing 1 and then open the cover 38 to conveniently take out the air filter 32 and replace it.

[0015] Preferably, the opening 37 and the cover plate 38 are sealed by a rubber strip 381 .

[0016] Preferably, the air filter 32 further includes a coarse-efficiency air filter 3201 and / or a medium-efficiency air filter 3202 .

[0017] The left and right inner side walls of the filter cartridge 3 are respectively provided with a second sliding groove 322 . The second sliding groove 322 is located in front of the first sliding groove 323 and faces the edge of the opening 37 .

[0018] The left and right ends of the coarse-efficiency air filter 3201 and / or the medium-efficiency air filter 3202 are respectively fixed by the second sliding groove 322.

[0019] By using the coarse-efficiency air filter 3201 and / or the medium-efficiency air filter 3202 to filter impurities in the air first, the service life of the high-efficiency air filter 3203 can be extended.

[0020] Preferably, a straight slide rail 23 is provided on the inner side of the installation box 2, and slide bars 31 matching the slide rail 23 are provided on the left and right outer walls of the filter cartridge 3. The slide bars 31 are slidably connected to the slide rail 23, that is, the slide bars 31 can slide smoothly along the slide rail 23. Therefore, when the air filter 32 needs to be replaced, the operator can use the slide rail 23 and the slide bar 31 to quickly pull out the filter cartridge 3.

[0021] Preferably, a square frame 33 is provided at the front end of the filter cartridge 3, and a mounting seat 110 matching the shape of the square frame 33 is provided on the mounting opening 11. The square frame 33 is mounted on the mounting seat 110 through a first latch 34, and a rubber frame 36 is provided between the square frame 33 and the mounting seat 110.

[0022] Preferably, the front side of the frame 33 is provided with a handle 35. Therefore, when the air filter 32 needs to be replaced, the staff can utilize the handle 35 to quickly extract the filter cartridge 3.

[0023] Preferably, the air inlet 20 is equipped with a fixed shutter 21 .

[0024] Preferably, a movable shutter 4 is provided on the ventilation port 12, and an induced draft fan 41 corresponding to the ventilation port 12 is provided inside the housing 1. The air inlet end 431 of the induced draft fan 41 faces the interior of the housing 1, and the air outlet end 432 is connected to the ventilation port 12 through the ventilation box 42. The induced draft fan 41 can quickly discharge the hot air in the housing 1.

[0025] Preferably, the movable shutter 4 has a first pull cord 401 for pulling the movable shutter 4 to open, and a second pull cord 402 for pulling the movable shutter 4 to close.

[0026] The movable shutter 4 is provided with a control mechanism 5, which includes a box body 51 with holes at both ends. A bidirectional motor 52 is provided in the box body 51, and the rotating end of the bidirectional motor 52 can rotate forward and reverse.

[0027] The rotating end of the bidirectional motor 52 is transmission-connected to the first rotating shaft 531 and the second rotating shaft 532 , and the ends of the first pull rope 401 and the second pull rope 402 are fixedly connected to the first rotating shaft 531 and the second rotating shaft 532 respectively.

[0028] The forward rotation of the rotating end of the bidirectional motor 52 will tighten the first pull rope 401 and loosen the second pull rope 402. The reverse rotation of the rotating end of the bidirectional motor 52 will tighten the second pull rope 402 and loosen the first pull rope 401.

[0029] The control mechanism 5 is also provided with a control system, which is interlocked with the centrifugal fan 22 and the induced draft fan 41. It can simultaneously turn on the induced draft fan 41 and the movable shutter 4 when the centrifugal fan 22 is turned on, and simultaneously turn off the induced draft fan 41 and the movable shutter 4 when the centrifugal fan 22 is turned off, thereby preventing salt mist from entering the interior of the housing 1 through the movable shutter 4.

[0030] Therefore, when in use, it is only necessary to regularly turn on the centrifugal fan 22. The air inhaled by the centrifugal fan 22 will be filtered by the air filter 32 installed in the cylinder 3 to remove the salt mist, which can not only ensure the ventilation of the box-type substation, but also prevent the air in the box-type substation from containing salt mist components, thereby corroding the metal substation equipment.

[0031] Since the housing 1, installation box 2, centrifugal fan 22, filter cartridge 3, air filter 32 and housing 1 of the box-type substation form an integrated structure, the box-type substation can be easily moved by using the rotating wheels 13 or a crane.

[0032] When the air filter 32 needs to be replaced, the staff only needs to remove the filter cartridge 3 from the outside of the housing 1 and then open the cover 38 to conveniently take out the air filter 32 and replace it.

[0033] The box-type substation provided by the utility model has a simple structure, is easy to use, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of a box-type substation viewed from the outside;

[0035] Figure 2 This is a structural diagram of the installation box and filter cartridge viewed from the front;

[0036] Figure 3 This is a structural diagram showing the installation box and filter cartridge cut away from the rear side;

[0037] Figure 4 This is a structural diagram illustrating the separation of the installation box and the filter cartridge;

[0038] Figure 5 This is a structural diagram illustrating the separation of the filter cartridge and the cover plate;

[0039] Figure 6 This is a diagram illustrating the structure of the inside of the ventilation port;

[0040] Figure 7 This is a structural diagram of the control mechanism.

[0041] Description of the drawings: 1-housing; 11-mounting port; 110-mounting seat; 12-ventilation port; 13-rotating wheel; 14-filter dust door; 15-sliding door; 2-mounting box; 21-fixed shutter; 22-centrifugal fan; 20-air inlet; 23-slide rail; 3-filter cartridge; 31-slide bar; 32-air filter; 33-box; 34-first latch; 35-handle; 36-rubber frame; 37-opening; 38-cover plate; 381-rubber strip; 29 -Second latch 39; 3201-coarse-efficiency air filter; 3202-medium-efficiency air filter; 3203-high-efficiency air filter; 323-first chute; 322-second chute; 4-movable shutter; 401-first pull rope; 402-second pull rope 402; 41-induced draft fan; 42-ventilation box; 431-air inlet; 432-air outlet; 5-control mechanism; 51-box; 52-bidirectional motor; 531-first rotating shaft; 532-second rotating shaft. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description is a concretization of the claims of the present invention.

[0043] Example

[0044] The box-type substation includes a housing 1, an installation box 2, a centrifugal fan 22, a filter cartridge 3, and an air filter 32. The structure is described below with reference to the accompanying drawings:

[0045] Figure 1 The figure shows the structure of the box-type substation from the outside. Figure 1 As shown, the box-type substation has a square shell 1, the bottom of the shell 1 is provided with rotating wheels 13 for easy movement, the inside of the shell 1 is installed with substation equipment not shown in the figure, a sliding door 15 is provided in the middle of the front side for staff to enter and exit to inspect the substation equipment, and two installation ports 11 are provided on one side of the shell 1.

[0046] Figure 2 、 3 The installation opening 11 is enlarged and the housing 1 is cut open to show the structures of the installation box 2 and the filter cartridge 3 from different perspectives. Figure 4 The structure in which the installation box and the filter cartridge are separated is shown. It can be seen that the centrifugal fan 22 is arranged in the installation box 2, and the air filter 32 is arranged in the filter cartridge 3. Therefore, the staff can remove the filter cartridge 3 from the outside of the shell 1, that is, conveniently take out the air filter 32 for replacement.

[0047] The following combination Figures 2-4 For detailed explanation:

[0048] Combine Figure 1 、 2 As can be seen, the installation box 2 is fixed to the inner side of the installation opening 11 and is connected to the outside through the installation opening 11. A dustproof door 14 with a filter is provided on the outer side of the installation opening 11. An air inlet 20 is provided at the rear end of the installation box 2, and a fixed shutter 21 is installed at the air inlet 20.

[0049] like Figure 3 As shown, the centrifugal fan 22 is arranged inside the installation box 2, and the outlet of the centrifugal fan 22 is opposite to the air inlet 20.

[0050] See also Figure 2 The filter cartridge 3 has a shape that matches the mounting box 2 and is detachably mounted on the front side of the centrifugal fan 22 via a first latch 34 .

[0051] The above “matching” means that the outer side of the filter cartridge and the inner side of the installation box 2 have shapes that can fit together, so that the filter cartridge 3 can be stably installed in the installation box 2 .

[0052] like Figure 4 As shown, the front end of the filter cartridge 3 is provided with a square frame 33, and the mounting port 11 is provided with a mounting seat 110 that matches the shape of the square frame 33. The square frame 33 is mounted on the mounting seat 110 through a first latch 34. A rubber frame 36 (see Figure 5 )seal.

[0053] The above-mentioned "matching" means that the mounting base 110 has a slot with the same shape as the frame 33, so that the frame 33 can be stably embedded in the mounting base 110, and after embedding, the mounting base 110 and the frame 33 have aligned surfaces, so that the movable rod 34a of the first latch 34 is set on the surface of the frame 33, and the buckle 34b of the first latch 34 is set on the surface of the mounting base 110. And, as Figure 2 As shown, when the filter cartridge 3 is installed in the installation box 2, the movable rod 34a is opposite to the buckle 34b.

[0054] Combine Figures 2-4 As can be seen, a straight slide rail 23 is provided on the inner side of the installation box 2, and a slide bar 31 matching the slide rail 23 is provided on the left and right outer walls of the filter cartridge 3, and the slide bar 31 is slidably connected to the slide rail 23. The above-mentioned "matching" means that the slide bar 31 can slide smoothly along the slide rail 23.

[0055] A handle 35 is provided on the front side of the frame 33 , so that a worker can use the handle 35 to pull the filter cartridge 3 out of the installation box 2 .

[0056] Depend on Figure 4 It can be seen that an opening 37 is provided on the upper side of the filter cartridge 3 , and a detachable cover plate 38 is fixed to the opening 37 via a second latch 39 .

[0057] Figure 5 The structure in which the filter cartridge 3 is separated from the cover plate 3 is shown. When the cover plate 3 is covered on the filter cartridge 3, the movable rod 39a of the second latch 39 is aligned with the buckle 39b.

[0058] Combine Figure 4 、 5 As shown, the opening 37 and the cover plate 38 are sealed by a rubber strip 381 .

[0059] Depend on Figure 5 As shown, the air filter 32 has a three-layer structure, namely a high-efficiency air filter 3203, a medium-efficiency air filter 3202, and a coarse-efficiency air filter 3201. All three can cover the cross-section of the air inlet channel inside the filter cartridge 3 and filter the air passing through the air inlet channel.

[0060] The specific performance of the HEPA filter 3203, MEPA filter 3202, and CEPA filter 3201, such as ventilation volume, particle size that can be filtered, and filter media used, can be manufactured with reference to the current standard "GB / T 14295-2019 Air Filters." The following is only one example of a feasible filter media solution:

[0061] The coarse-efficiency air filter 3201 uses a foldable filter cloth held open by a square support frame. The medium-efficiency air filter 3202 uses a filter plate made of polyester fiber. The high-efficiency air filter 3203 uses rectangular filter plates 3203a made of ultrafine glass fiber. Multiple rectangular filter plates 3203a are mounted together by a fixing frame to form a connected "V"-shaped structure. This structure increases the contact area between the air and the rectangular filter plates 3203a, effectively filtering out salt spray.

[0062] A vertical first slide groove 323 is provided on the left and right inner side walls at the rear of the filter cartridge 3 , respectively. The first slide groove 323 faces the edge of the opening 37 , and the left and right ends of the HEPA filter 3203 are respectively fixed by the first slide groove 323 .

[0063] On the front side of the first slide groove 323, the left and right inner walls of the filter cartridge 3 are respectively provided with second slide grooves 322, and the second slide grooves 322 are opposite to the edge of the opening 37. The left and right ends of the coarse-efficiency air filter 3201 and the medium-efficiency air filter 3202 are respectively limited and fixed by the second slide grooves 322.

[0064] The above-mentioned “facing the edge of the opening 37 ” means that the slots of the first slide groove 323 and the second slide groove 322 are unobstructed, so that the frame of the air filter can be inserted into the first slide groove 323 and the second slide groove 322 from the opening 37 without hindrance.

[0065] Figure 6 The structure of the ventilation port as viewed from the inside of the housing is shown.

[0066] Combine Figure 1 As shown, ventilation ports 12 are provided on the left and right sides of the housing 1 , and movable shutters 4 are provided on the ventilation ports 12 .

[0067] like Figure 6 As shown, an induced draft fan 41 corresponding to the ventilation port 12 is provided on the inner side of the shell 1. The air inlet end 431 of the induced draft fan 41 faces the inside of the shell 1, and the air outlet end 432 is connected to the ventilation port 12 through the ventilation box 42. The induced draft fan 41 can quickly discharge the hot air in the shell 1.

[0068] A control mechanism 5 is also provided on the upper side of the movable shutter 4. Figure 7 The internal structure of the control mechanism 5 is shown.

[0069] like Figure 7 As shown, the control mechanism 5 includes a box body 51 with holes at both ends. A bidirectional motor 52 is arranged in the box body 51. The rotating end of the bidirectional motor 52 can rotate forward and reverse.

[0070] The rotating end of the bidirectional motor 52 is transmission-connected to the first rotating shaft 531 and the second rotating shaft 532 .

[0071] The movable shutter 4 has a first pull cord 401 for pulling the movable shutter 4 to open, and a second pull cord 402 for pulling the movable shutter 4 to close.

[0072] The ends of the first pull rope 401 and the second pull rope 402 are fixedly connected to the first rotating shaft 531 and the second rotating shaft 532 respectively, so that when the rotating end of the bidirectional motor 52 rotates forward, the first pull rope 401 is tightened and the second pull rope 402 is loosened, and when it rotates reversely, the second pull rope 402 is tightened and the first pull rope 401 is loosened.

[0073] In addition, a control system is also provided in the control mechanism 5. The control system of the control mechanism 5 is interlocked with the centrifugal fan 22 and the induced draft fan 41. It can simultaneously turn on the induced draft fan 41 and the movable shutter 4 when the centrifugal fan 22 is turned on, and can simultaneously turn off the induced draft fan 41 and the movable shutter 4 when the centrifugal fan 22 is turned off.

[0074] During use, the centrifugal fan 22 is turned on regularly. The air sucked in by the centrifugal fan 22 will be filtered in sequence by the coarse-effect air filter 3201, the medium-effect air filter 3202 and the high-efficiency air filter 3203 to remove salt mist, which not only ensures the ventilation of the box-type substation, but also prevents the air in the box-type substation from containing salt mist components, thereby corroding the metal substation equipment.

[0075] At the same time, the control mechanism 5 starts the induced draft fan 41 and opens the movable shutter 4. The induced draft fan 41 can not only increase the ventilation volume, but also prevent salt mist from being sucked into the movable shutter 4.

[0076] Since the housing 1, installation box 2, centrifugal fan 22, filter cartridge 3, air filter 32 and housing 1 of the box-type substation form an integrated structure, the box-type substation can be easily moved by only using the rotating wheels 13 or a crane.

[0077] When the air filter 32 needs to be replaced, the staff only needs to remove the filter cartridge 3 from the outside of the housing 1 and then open the cover 38 to conveniently take out the air filter 32 for replacement.

[0078] It is worth noting that the size, quantity and position of the installation port 11, the installation box 2, the filter cartridge 3, the air filter 32 and the ventilation port 12 should be designed according to actual conditions.

[0079] The box-type substation provided by the utility model has a simple structure, is easy to use, and is suitable for promotion.

Claims

1. Box-type substation, characterized by: The invention comprises a housing (1), a mounting box (2), a centrifugal fan (22), a filter cartridge (3), and an air filter (32). The housing (1) is used to mount power conversion equipment. A square mounting opening (11) and a plurality of ventilation openings (12) are provided on the side of the housing (1). The installation box (2) is fixed on the inner side of the installation opening (11) and communicates with the outside through the installation opening (11). An air inlet (20) is provided at the rear end of the installation box (2). The centrifugal fan (22) is arranged inside the installation box (2), and the outlet of the centrifugal fan (22) faces the air inlet (20). The filter cartridge (3) has a shape matching the mounting box (2) and is detachably mounted on the front side of the centrifugal fan (22). The front and rear ends of the filter cartridge (3) are open, and an air inlet passage is formed inside. The air filter (32) is detachably fixed in the filter cartridge (3). The air filter (32) at least includes a high-efficiency air filter (3203) covering the cross section of the air inlet passage of the filter cartridge (3).

2. The box-type substation according to claim 1, characterized in that: An opening (37) is provided on the upper side of the filter cartridge (3), and a detachable cover plate (38) is fixed on the opening (37). The left and right inner side walls of the filter cartridge (3) are respectively provided with vertical first sliding grooves (323), the first sliding grooves (323) facing the edge of the opening (37), and the left and right ends of the high-efficiency air filter (3203) are respectively fixed by the first sliding grooves (323).

3. The box-type substation according to claim 2, characterized in that: The opening (37) and the cover plate (38) are sealed by a rubber strip (381).

4. The box-type substation according to claim 2, characterized in that: The air filter (32) further includes a coarse-efficiency air filter (3201) and / or a medium-efficiency air filter (3202). The left and right inner side walls of the filter cartridge (3) are respectively provided with second chutes (322), the second chutes (322) being located in front of the first chutes (323) and facing the edge of the opening (37), and the left and right ends of the coarse-efficiency air filter (3201) and / or the medium-efficiency air filter (3202) are respectively fixed by the second chutes (322).

5. The box-type substation according to claim 1, characterized in that: A straight slide rail (23) is provided on the inner side of the installation box (2), and slide bars (31) matching the slide rail (23) are provided on the left and right outer side walls of the filter cartridge (3), respectively. The slide bars (31) are slidably connected to the slide rail (23).

6. The box-type substation according to any one of claims 1 to 5, characterized in that: A square frame (33) is provided at the front end of the filter cartridge (3), and a mounting seat (110) having a shape matching that of the square frame (33) is provided on the mounting opening (11). The square frame (33) is mounted on the mounting seat (110) via a first latch (34), and a rubber frame (36) is provided between the square frame (33) and the mounting seat (110).

7. The box-type substation according to claim 6, characterized in that: A handle (35) is provided on the front side of the frame (33).

8. The box-type substation according to any one of claims 1 to 5, characterized in that: The air inlet (20) is equipped with a fixed shutter (21).

9. The box-type substation according to any one of claims 1 to 5, characterized in that: The ventilation port (12) is provided with a movable shutter (4), and an induced draft fan (41) corresponding to the ventilation port (12) is provided inside the housing (1), an air inlet end (431) of the induced draft fan (41) faces the interior of the housing (1), and an air outlet end (432) is communicated with the ventilation port (12) through a ventilation box (42).

10. The box-type substation according to claim 9, characterized in that: The movable shutter (4) has a first pull cord (401) for pulling the movable shutter (4) to open it, and a second pull cord (402) for pulling the movable shutter (4) to close it. The movable shutter (4) is provided with a control mechanism (5), the control mechanism (5) comprising a box body (51) with holes at both ends, a bidirectional motor (52) being provided in the box body (51), and the rotating end of the bidirectional motor (52) being capable of forward and reverse rotation. The rotating end of the bidirectional motor (52) is connected to the first rotating shaft (531) and the second rotating shaft (532), and the ends of the first pull rope (401) and the second pull rope (402) are fixedly connected to the first rotating shaft (531) and the second rotating shaft (532), respectively. The forward rotation of the rotating end of the bidirectional motor (52) will tighten the first pull rope (401) and loosen the second pull rope (402), and the reverse rotation of the rotating end of the bidirectional motor (52) will tighten the second pull rope (402) and loosen the first pull rope (401). The control mechanism (5) is also provided with a control system, and the control system is interlocked with the centrifugal fan (22) and the induced draft fan (41).

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