Direct ventilation outdoor power supply cabinet

Abstract

The utility model discloses a direct ventilation outdoor power supply cabinet, and belongs to the technical field of cabinets. The direct ventilation outdoor power supply cabinet comprises a cabinet body, the cabinet body is provided with an air inlet and an air outlet, a fan used for forced ventilation is arranged in the air inlet or the air outlet or a main air duct formed by the air inlet and the air outlet, and a smoke sensor is further arranged in the cabinet body. The smoke sensor is used for monitoring the concentration of smoke particles in the cabinet body and sending out an alarm signal when the concentration exceeds a preset threshold value, and the fan automatically stops running in response to the alarm signal. According to the scheme of the utility model, the smoke sensor is arranged in the cabinet body, and the fan is controlled to automatically stop running through the alarm signal of the smoke sensor, so that the supply of fresh air is blocked, the blowing to an ignition point can be stopped, the fire behavior is prevented from further spreading, and the loss of a fire disaster is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cabinet technical field especially relates to a straight-through ventilation outdoor power cabinet. BACKGROUND

[0002] The outdoor power cabinet of straight-through ventilation type may be subject to electrical component aging, overheating, water leakage, foreign matter invasion and other conditions due to long-term exposure to complex and changeable external environment, which increases the risk of short circuit or overheating of electrical equipment in the cabinet, and may further cause fire accidents. In addition, in the outdoor power cabinet of straight-through ventilation type, a forced ventilation fan is usually provided to ensure good air circulation and heat dissipation effect. However, in the event of a fire, if the fan continues to operate, the continuous operation of the fan will continuously introduce oxygen-containing air, which will facilitate the combustion process, and the strong air flow may cause the flame to spread rapidly to other parts of the cabinet, and spread to adjacent cabinets or the surrounding environment through the air inlet / outlet, resulting in a larger range of fire accidents. In this way, not only will the equipment in the cabinet be damaged, but also the surrounding facilities may be affected, causing huge economic losses and safety hazards to customers and society. SUMMARY

[0003] The utility model provides a straight-through ventilation outdoor power cabinet, through install smoke sensor in the cabinet body, the alarm signal of smoke sensor controls fan automatic stop running, thereby avoid the spread of fire, improve the safety performance of product.

[0004] The utility model provides a straight-through ventilation outdoor power cabinet, the power cabinet includes the cabinet body, be provided with air inlet and air outlet on the cabinet body, be provided with the fan for forced ventilation and the smoke sensor for monitoring the concentration of smoke particle in the cabinet body in the cabinet body, the smoke sensor sends out the alarm signal when the concentration exceeds the preset threshold value, the fan is automatically stopped running in response to the alarm signal, still be provided with the control unit in the cabinet body.

[0005] Through setting up smoke sensor in the cabinet body, when the smoke sensor sends out the alarm signal when the concentration of smoke particle in the cabinet body exceeds the preset threshold value, then through the alarm signal control the fan automatic stop running, thereby block the supply of new air, stop blowing to the ignition point, avoid the spread of fire, effectively reduce the loss of fire.

[0006] The utility model provides a straight-through ventilation outdoor power cabinet, still be provided with equipment mounting frame in the cabinet body, the frame body of equipment mounting frame and the cabinet body surround and form the accommodation space for accommodating user equipment, equipment mounting frame is located on the air duct formed by air inlet and air outlet, form the air outlet passageway between equipment mounting frame and air outlet.

[0007] The device mounting rack is arranged on an air duct formed by the air inlet and the air outlet, so that the user equipment in the device mounting rack can be effectively cooled.

[0008] In the straight-through ventilation outdoor power cabinet, the air inlet is arranged at the lower part of the front door plate of the cabinet body, the air outlet is arranged at the upper part of the front door plate of the cabinet body, the device mounting rack comprises two groups of stand columns which are oppositely arranged at the two sides of the cabinet body along the height direction of the cabinet body, one end of the stand column is fixedly connected with the top plate of the cabinet body, the other end is fixedly connected with the bottom plate of the cabinet body, one group of the stand columns is arranged close to the front door plate, and the other group of the stand columns is arranged close to the back plate, the device mounting rack further comprises a plurality of supporting rails which are oppositely arranged at the two sides of the cabinet body along the depth direction of the cabinet, and the two ends of the supporting rail are fixed on the two groups of stand columns respectively, one group of the supporting rails is used for fixing a set of user equipment, the stand column and the cabinet body enclose a containing space for containing the user equipment, an air inlet channel is formed between the containing space and the front door plate of the cabinet body, a first part of the air outlet channel is formed between the back plate of the cabinet body and the containing space, a second part of the air outlet channel is formed between the upper part of the containing space and the air outlet via the opening, and the air inlet channel, the containing space, the first part of the air outlet channel and the second part of the air outlet channel are sequentially and mutually communicated to jointly form an air flow channel.

[0009] The area of the front door plate of the cabinet is relatively large, the air inlet and the air outlet are arranged on the front door plate of the cabinet, the area of the air inlet and the air outlet can be correspondingly increased, and the heat dissipation efficiency is improved.

[0010] In the straight-through ventilation outdoor power cabinet, the smoke sensor is arranged in the air outlet channel at the rear of the device mounting rack or in the upper part of the cabinet body.

[0011] Since the smoke naturally rises, the smoke sensor arranged at the top of the cabinet body or in the upper part of the cabinet body can accurately measure the smoke particle concentration of the smoke dense part in the cabinet body, so that an alarm signal can be timely sent.

[0012] In the straight-through ventilation outdoor power cabinet, the alarm signal output end of the smoke sensor is connected with the control unit, and the control unit controls the fan to stop running after receiving the alarm signal.

[0013] The alarm signal of the smoke sensor is connected to the control unit, the control unit can forward the alarm signal to the remote monitoring system, so that the remote user can know the fire situation in time and timely intervene.

[0014] The alarm signal output end of the smoke sensor is connected with the control end of the fan and the control unit, when the alarm signal triggers, the fan automatically stops running, and the control unit retransmits the alarm signal.

[0015] The alarm signal of the smoke sensor is directly connected to the control end of the fan, the running of the fan is directly controlled through the alarm signal, the intermediate link is reduced, and the reliability is high.

[0016] The alarm signal output end of the smoke sensor is connected with the control end of the fan and the control unit, when the alarm signal triggers, the fan automatically stops running, and the control unit retransmits the alarm signal.

[0017] The alarm signal of the smoke sensor is directly connected to the control end of the fan, the running of the fan is directly controlled through the alarm signal, the intermediate link is reduced, and the reliability is high.

[0018] The utility model provides a straight ventilation outdoor power cabinet, the air inlet and the air outlet are provided with filter screen.

[0019] The filter screen is arranged at the air inlet and the air outlet, which can block the dust and foreign matters from entering the cabinet, and can hinder the air exchange between the inside and outside of the cabinet when the fan stops running, thereby further reducing the spread of fire.

[0020] The utility model provides a straight ventilation outdoor power cabinet, the air inlet and / or the air outlet are provided with the fan, one side of the fan towards the cabinet inboard is provided with fan cover plate.

[0021] When the fan runs, the fan cover plate is blown open, and when the fan stops running, the fan cover plate is closed automatically due to gravity, thereby preventing the air from flowing between the inside and outside of the cabinet and further preventing the spread of fire.

[0022] The utility model provides a straight ventilation outdoor power cabinet, air duct partition plate is arranged between the equipment mounting bracket and the air outlet.

[0023] The air duct partition plate can isolate the air inlet channel and the air outlet channel, thereby improving the heat dissipation efficiency. DRAWINGS

[0024] Fig. 1 The utility model provides a three-dimensional structure schematic diagram of the straight ventilation outdoor power cabinet.

[0025] Figs. 2-3 The utility model provides a left view of the straight ventilation outdoor power cabinet.

[0026] Figs. 4-6 This is a schematic diagram of the alarm signal control method provided in Embodiment 1 of this utility model.

[0027] Figs. 7-9 This is a left view of the direct-ventilation outdoor power cabinet provided in Embodiment 2 of this utility model.

[0028] Figs. 10-11 This is a left view of the direct-ventilation outdoor power cabinet provided in Embodiment 3 of this utility model.

[0029] In the attached diagram:

[0030] 100. Cabinet; 110. Air inlet; 120. Air outlet; 130. Fan; 131. Fan cover; 140. Smoke sensor; 150. Equipment mounting rack; 151. Column; 152. Rail; 153. Sealing plate; 160. Front door panel; 170. Air duct partition; 180. Filter screen; 190. Back panel; 210. Accommodation space; 220. Air inlet duct; 230. First part of the air outlet duct; 240. Second part of the air outlet duct; 300. User equipment. Detailed Implementation

[0031] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] The solution of this utility model is applicable to outdoor power cabinets that dissipate heat from user equipment through direct ventilation, and is also applicable to other outdoor cabinets that require heat dissipation from user equipment through direct ventilation.

[0033] Example 1

[0034] like Figs. 1-3 As shown, this is the first embodiment of the direct-ventilation outdoor power cabinet of this utility model. The direct-ventilation outdoor power cabinet of this embodiment includes a cabinet body 100. The cabinet body 100 is provided with an air inlet 110 and an air outlet 120. The cabinet body 100 is provided with a fan 130 for forced ventilation and a smoke sensor 140 for monitoring the concentration of smoke particles in the cabinet body 100. The smoke sensor 140 issues an alarm signal when the concentration exceeds a preset threshold. The fan 130 automatically stops running in response to the alarm signal. The cabinet body 100 is also provided with a control unit.

[0035] The oxygen in the air helps combustion. In a conventional straight-through ventilation outdoor power cabinet, when a fire accident occurs, the fan is still running, and the oxygen-containing air continuously helps combustion, and the wind will help the fire spread to other parts around, not only causing the equipment in the cabinet to burn out, but also causing the cabinet outside and the environment to catch fire, causing huge losses and serious consequences to the customer and society. In the embodiment, by setting a smoke sensor 140 in the cabinet body 100, when the smoke sensor 140 detects that the smoke particle concentration in the cabinet body 100 exceeds the preset threshold, an alarm signal is sent out, and then the fan 130 is automatically stopped running through the alarm signal, thereby blocking the supply of new air, stopping the wind blowing on the fire point, avoiding the spread of the fire, and with the disappearance of the energy (for electrical equipment, mainly electrical energy) causing the fire and the depletion of oxygen in the cabinet, the fire will self-extinguish.

[0036] Specifically, as shown in Figs. 1-2 The air inlet 110 is arranged at the lower part of the front door panel 160 of the cabinet body 100, and the air outlet 120 is arranged at the upper part of the front door panel 160 of the cabinet body 100. The air inlet 110 is provided with a fan 130, and the fan 130 is used for air supply. As shown in Fig. 3 In the embodiment, the fan 130 can also be arranged at the air outlet 120, at this time, the fan 130 is used for air exhaust. Alternatively, a fan 130 for air supply can also be arranged at the air inlet 110, and a fan 130 for air exhaust can also be arranged at the air outlet 120.

[0037] The cabinet body 100 is also provided with a device mounting rack 150, and the rack body of the device mounting rack 150 and the cabinet body 100 form a containing space 210 for accommodating user equipment 300. The device mounting rack 150 is located on the air duct formed by the air inlet 110 and the air outlet 120, and an air outlet passage is formed between the device mounting rack 150 and the air outlet 120.

[0038] The device mounting rack 150 is arranged on the air duct formed by the air inlet 110 and the air outlet 120, which can effectively cool the user equipment 300 in the device mounting rack 150.

[0039] Specifically, the equipment mounting rack 150 includes two groups of vertical columns 151 arranged on both sides of the cabinet body 100 in the height direction of the cabinet body 100. One end of the vertical column 151 is fixedly connected with the top plate of the cabinet body 100, and the other end is fixedly connected with the bottom plate of the cabinet body 100. One group of vertical columns 151 is arranged close to the front door plate 160, and the other group of vertical columns 151 is arranged close to the back plate 190 and keeps a certain distance from the back plate 190 to facilitate air outlet. The equipment mounting rack 150 further includes a plurality of groups of supporting rails 152 arranged on both sides of the cabinet body 100 in the depth direction of the cabinet 100. Both ends of the supporting rail 152 are fixed on the two groups of vertical columns 151 respectively. One group of supporting rails 152 is used to fix a set of user equipment 300. The vertical column 151 and the cabinet body 100 enclose a containing space 210 for accommodating the user equipment 300. The containing space 210 and the front door plate 160 of the cabinet body 100 form an air inlet channel 220, the back plate 190 of the cabinet body 100 and the containing space 210 form a first part of the air outlet channel 230, and the upper part of the containing space 210 and the air outlet 120 form a second part of the air outlet channel 240. The air inlet channel 220, the containing space 210, the first part of the air outlet channel 230, and the second part of the air outlet channel 240 are sequentially and communicatively connected to form an air flow channel. Fig. 1 In the embodiment, the supporting rail 152 is an L-shaped supporting rail, and the user equipment 300 is arranged between the two opposite L-shaped supporting rails 152 and fixed through the right-angle position of the L-shaped supporting rail 152. The vertical column 151 can be fixed on the inner wall of the side plate of the cabinet body 100 or kept a certain distance from the side plate. If kept a certain distance, a sealing plate 153 can be additionally arranged between the vertical column 151 and the side plate to isolate the air duct.

[0040] The area of the front door plate of the cabinet is large. By arranging the air inlet and the air outlet on the front door plate of the cabinet, the area of the air inlet and the air outlet can be correspondingly increased, and the heat dissipation efficiency can be improved. The equipment mounting rack is arranged in the central region of the cabinet, and the air inlet channel and the air outlet channel are respectively arranged between the equipment mounting rack and the front door plate and the back plate of the cabinet body. The volume of the cabinet can be effectively utilized, the structure of the air inlet channel and the air outlet channel can be simplified, and the heat dissipation efficiency can be improved. In addition, the air inlet and the air outlet can also be arranged on the side plate and the back plate of the cabinet body.

[0041] As shown in Figs. 1-3 The air duct partition plate is arranged between the equipment mounting rack 150 and the air outlet 120. The air duct partition plate can isolate the air inlet channel and the air outlet channel, and improve the heat dissipation efficiency.

[0042] Fig. 2In the embodiment, the direction indicated by the arrow is the air flow direction, and the air flow process is as follows: the fan 130 arranged at the air inlet 110 sucks the cold air outside the cabinet into the cabinet, the cold air flows into the accommodating space 210 through the air inlet channel 220, exchanges heat with the user equipment 300 in the accommodating space 210, and the hot air is discharged from the air outlet 120 through the first part of the air outlet channel 230 and the second part of the air outlet channel 240. Fig. 3 In the embodiment, the air in the air flow channel is sucked away by the fan 130 at the air outlet 120, a negative pressure is formed in the air flow channel, the cold air outside the cabinet is sucked into the cabinet due to the negative pressure from the air inlet 110, enters the accommodating space 210 to exchange heat with the user equipment 300, and then the hot air is discharged from the air outlet 120 through the first part of the air outlet channel 230 and the second part of the air outlet channel 240.

[0043] Figs. 2-3 In the embodiment, the smoke sensor 140 is arranged at the top of the cabinet 100, which is located in the air outlet channel behind the mounting bracket 150. If there is no installation space at the top of the cabinet 100, or the selected smoke sensor 140 is not resistant to high temperature, the smoke sensor 140 can also be arranged in the upper part of the cabinet 100, such as above the fan 130 on the inner wall of the front door plate 160. Fig. 1 As the smoke naturally rises, the smoke sensor 140 arranged at the top of the cabinet 100 or in the upper part of the cabinet 100 can accurately measure the smoke particle concentration in the smoke dense area in the cabinet 100, so as to timely send an alarm signal.

[0044] In the embodiment, the alarm signal of the smoke sensor 140 is used to control the fan 130 to stop running. Specifically, there are the following three control modes:

[0045] (1) As shown in Fig. 4 , the alarm signal output end of the smoke sensor 140 is connected with the control unit, and the control unit controls the fan 130 to stop running after receiving the alarm signal. The advantage of this mode is that the control unit can forward the alarm signal to the remote monitoring system, so that the remote user can know the fire situation in time and intervene in time. The disadvantage is that if the control unit fails, the fan will not stop running, resulting in the spread of the fire.

[0046] (2) As shown in Fig. 5 , the alarm signal output end of the smoke sensor 140 is connected with the control end of the fan 130, and the fan 130 automatically stops running when the alarm signal is triggered. The advantage of this mode is that the alarm signal directly controls the running of the fan, reduces the intermediate link, and has high reliability. The disadvantage is that the user cannot know the on-site situation remotely and cannot intervene.

[0047] (3) As shown in Fig. 6As shown, the alarm signal output terminal of the smoke sensor 140 is connected to both the control terminal and the control unit of the fan 130. When the alarm signal is triggered, the fan 130 automatically stops running, and the control unit forwards the alarm signal to the outside world. This method has the advantages of the two methods mentioned above, but the disadvantage is that current smoke sensors usually only have one output signal, which may require custom smoke sensors or modification of the output signal of existing smoke sensors.

[0048] In practical applications, the control method of the alarm signal for the fan is determined based on the actual situation of the cabinet. Since the direct ventilation outdoor power cabinet is deployed outdoors, the control unit usually has a monitoring function, so the above control method (1) is preferred.

[0049] It is understood that, based on this embodiment, fire protection facilities, such as gas fire protection facilities and water fire protection facilities, as well as combustible gas detectors, can be added inside the cabinet. The main control unit determines whether to stop the operation of the fan and whether to activate the fire protection facilities based on the detection results of the smoke sensor and combustible gas detector, thereby further improving the safety of the cabinet.

[0050] Example 2

[0051] like Figs. 7-9 The image shows a second embodiment of the direct-ventilation outdoor power supply cabinet of this utility model. The difference between this embodiment and the first embodiment is that there is no air duct partition 170 between the equipment mounting frame 150 and the air outlet 120. The fan 130 has a fan cover 131 on the side facing the inside of the cabinet 100. When the fan 130 is running, the fan cover 131 is blown open. When the fan 130 stops running, the fan cover 131 closes automatically due to gravity, isolating the airflow inside and outside the cabinet 100 and further preventing the spread of fire.

[0052] In this embodiment, the fan 130 is installed at the air inlet 110 and / or the air outlet 120.

[0053] In this embodiment, the smoke sensor 140 is installed in the air outlet duct behind the equipment mounting bracket 150, for example, on the top of the cabinet, or as... Fig. 9 As shown, the smoke sensor 140 is installed in the upper part of the cabinet 100.

[0054] Example 3

[0055] like Figs. 10-11As shown, it is the third embodiment of the straight-through wind outdoor power cabinet of the utility model. The difference between this embodiment and embodiment one is that: the air duct partition plate 170 is not arranged between the equipment mounting frame 150 and the air outlet 120, and the air inlet 110 and the air outlet 120 are provided with the filter screen 180. The filter screen is arranged at the air inlet and the air outlet, which can block the dust and foreign matters outside from entering the cabinet, and can hinder the air exchange between the inside and outside of the cabinet to a certain extent when the fan stops running, thereby further reducing the fire spreading.

[0056] It can be understood that, in addition to the above several embodiments, there are many kinds of deformations of the embodiments of the utility model, for example, the differences of the above several embodiments are continuously combined, or the positions of the air inlet, the air outlet, the equipment mounting frame and the fan are adjusted.

[0057] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and the ordinary skilled in the art can make many forms of deformation under the inspiration of the utility model without departing from the scope of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims

1. A straight-through ventilation outdoor power cabinet, the power cabinet comprising a cabinet body (100), the cabinet body (100) being provided with an air inlet (110) and an air outlet (120), characterized in that, The cabinet body (100) is provided with a fan (130) for forced ventilation and a smoke sensor (140) for monitoring the concentration of smoke particles in the cabinet body (100), the smoke sensor (140) sends an alarm signal when the concentration exceeds a preset threshold, and the fan (130) stops running automatically in response to the alarm signal, and the cabinet body (100) is also provided with a control unit.

2. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, The cabinet body (100) is also provided with a device mounting rack (150), the rack body of the device mounting rack (150) and the cabinet body (100) form a containing space (210) for accommodating user equipment (300), the device mounting rack (150) is located on the air duct formed by the air inlet (110) and the air outlet (120), and an air outlet passage is formed between the device mounting rack (150) and the air outlet (120).

3. The pass-through ventilation outdoor electrical enclosure of claim 2, wherein, The air inlet (110) is arranged at the lower part of the front door panel (160) of the cabinet body (100), the air outlet (120) is arranged at the upper part of the front door panel (160) of the cabinet body (100), the device mounting rack (150) includes two groups of vertical columns (151) arranged on both sides of the cabinet body (100) in the height direction of the cabinet body (100), one end of the vertical column (151) is fixedly connected with the top plate of the cabinet body (100), the other end is fixedly connected with the bottom plate of the cabinet body (100), one group of vertical columns (151) is arranged close to the front door panel (160), and the other group of vertical columns (151) is arranged close to the back plate (190); the device mounting rack (150) further includes a plurality of groups of supporting rails (152) arranged on both sides of the cabinet body (100) in the depth direction of the cabinet body (100), both ends of the supporting rail (152) are fixed on the two groups of vertical columns (151) respectively; one group of supporting rails (152) is used for fixing a set of user equipment (300); the vertical column (151) and the cabinet body (100) form a containing space (210) for accommodating user equipment (300), an air inlet passage (220) is formed between the containing space (210) and the front door panel (160) of the cabinet body (100), a first part of the air outlet passage (230) is formed between the back plate (190) of the cabinet body (100) and the containing space (210), and a second part of the air outlet passage (240) is formed between the upper part of the containing space (210) and the air outlet (120) via the opening (153); the air inlet passage (220), the containing space (210), the first part of the air outlet passage (230) and the second part of the air outlet passage (240) are sequentially and mutually communicated, and jointly constitute an air flow passage.

4. The pass-through ventilation outdoor electrical enclosure of claim 2, wherein, The smoke sensor (140) is installed in the air outlet passage behind the device mounting rack (150) or in the upper part of the cabinet body (100).

5. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, The alarm signal output end of the smoke sensor (140) is connected with the control unit, and the control unit controls the fan (130) to stop running after receiving the alarm signal.

6. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, The alarm signal output end of the smoke sensor (140) is connected with the control end of the fan (130), and the fan (130) automatically stops running when the alarm signal triggers.

7. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, The alarm signal output end of the smoke sensor (140) is connected with the control end of the fan (130) and the control unit, and the fan (130) automatically stops running when the alarm signal triggers, and the control unit forwards the alarm signal externally.

8. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, The air inlet (110) and the air outlet (120) are provided with filter screens (180).

9. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, The air inlet (110) and / or the air outlet (120) are provided with a fan (130), and one side of the fan (130) facing the inside of the cabinet (100) is provided with a fan cover plate (131).

10. The pass-through ventilation outdoor electrical supply cabinet of claim 1, wherein, A air duct partition (170) is arranged between the equipment mounting rack (150) and the air outlet (120).

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