CN116826577A - Prefabricated cabin ventilation and heat dissipation control method - Google Patents
Prefabricated cabin ventilation and heat dissipation control method Download PDFInfo
- Publication number
- CN116826577A CN116826577A CN202311096535.9A CN202311096535A CN116826577A CN 116826577 A CN116826577 A CN 116826577A CN 202311096535 A CN202311096535 A CN 202311096535A CN 116826577 A CN116826577 A CN 116826577A
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- prefabricated cabin
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- 238000009423 ventilation Methods 0.000 title claims abstract description 70
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009825 accumulation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to the technical field of power equipment, and particularly discloses a prefabricated cabin ventilation and heat dissipation control method, which comprises the following steps: step 1, acquiring heating parameters of heating equipment and air inlet parameters of air inlet equipment in a prefabricated cabin, and estimating the number m of the air inlet equipment needed in the prefabricated cabin according to the heating parameters and the air inlet parameters; step 2, acquiring exhaust parameters of exhaust equipment, the volume of a prefabricated cabin and required ventilation quantity, and estimating the number n of the exhaust equipment required in the prefabricated cabin according to the exhaust parameters, the volume of the prefabricated cabin and the required ventilation quantity; m and n are integers; and 3, calculating the actual air inlet quantity L1 according to the number of the air inlet devices, calculating the actual air outlet quantity L2 according to the number of the air outlet devices, comparing the sizes of the L1 and the L2, and configuring the air inlet devices and the air outlet devices according to the comparison result. The invention can realize good ventilation and heat dissipation effects, avoid rain leakage and have optimal cost through reasonably controlling the quantity of the air inlet equipment and the air exhaust equipment.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a prefabricated cabin ventilation and heat dissipation control method.
Background
The prefabricated cabin is widely used equipment in the transformer substation, and is mainly used for providing safe and stable environment to accommodate power equipment for the transformer substation, equipment such as a reactor, a transformer and SVG (static var generator) is included in the prefabricated cabin, a large amount of heat energy can be generated when the equipment runs, if ventilation and heat dissipation are bad, the heat accumulation in the equipment can be caused, the running quality of the equipment is influenced, the running life of the equipment is further influenced, the heat accumulation in the prefabricated cabin is caused, after the temperature exceeds the limit, the equipment has a large fault risk, and the running safety of a power system is influenced. Accordingly, ventilation and heat dissipation devices (e.g., fans, louvers, etc.) are typically configured to ventilate and dissipate heat within the prefabricated cabins. However, the ventilation and heat dissipation device is relatively random in configuration at present, and only the national standard GB50019-2015 can be met, so that the defects are that the device cost is high, the ventilation and heat dissipation effect is not optimal, and the problem that if the air output is too large, negative pressure is formed in a prefabricated cabin and the rain leakage risk exists is also ignored.
Disclosure of Invention
In order to overcome the defect that the existing ventilation and heat dissipation equipment is arranged at will, which possibly causes the bad ventilation and heat dissipation effect or the risk of rain leakage of the prefabricated cabin, the ventilation and heat dissipation control method in the prefabricated cabin is provided, so that the good ventilation and heat dissipation requirements can be met, the risk of rain leakage can be reduced, and the cost is reduced.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a prefabricated cabin ventilation and heat dissipation control method comprises the following steps:
step 1, acquiring heating parameters of heating equipment and air inlet parameters of air inlet equipment in a prefabricated cabin, and estimating the number m of the air inlet equipment needed in the prefabricated cabin according to the heating parameters and the air inlet parameters;
step 2, acquiring exhaust parameters of exhaust equipment, the volume of a prefabricated cabin and required ventilation quantity, and estimating the number n of the exhaust equipment required in the prefabricated cabin according to the exhaust parameters, the volume of the prefabricated cabin and the required ventilation quantity; m and n are integers;
step 3, calculating actual air inlet quantity L1 according to the number of the air inlet devices, calculating actual air outlet quantity L2 according to the number of the air outlet devices, comparing the sizes of the L1 and the L2, and configuring the air inlet devices and the air outlet devices according to the comparison result;
if L1 is more than L2, configuring air inlet equipment according to the number m estimated in the step 1, and configuring air exhaust equipment according to the number n estimated in the step 2;
if L1 is less than L2, reducing according to integer value on the basis of the number n estimated in the step 2 until L1 is more than L2, then configuring air inlet equipment according to the number m estimated in the step 1, and configuring air exhaust equipment according to the number after the number is reduced;
if l1=l2, the air intake device is configured according to the number m estimated in step 1, and the air exhaust device is configured according to the number n-1 estimated in step 2.
The air inlet parameters of the air inlet equipment directly influence the air inlet quantity, the air inlet quantity requirement is related to the heating quantity of the heating equipment, the air exhaust parameters of the air exhaust equipment directly influence the air exhaust quantity, and the air inlet requirement and the volume of the prefabricated cabin also restrict the air exhaust quantity. In the scheme, the influence of the performance parameters of the prefabricated cabin, the heating equipment, the air inlet equipment and the exhaust equipment on the air inlet quantity and the air exhaust quantity is comprehensively considered, then the quantity of the air inlet equipment and the air exhaust equipment is respectively configured according to the corresponding influence, the ventilation and heat dissipation effects in the prefabricated cabin are controlled through reasonable quantity configuration, the better ventilation and heat dissipation effects can be achieved, the operation safety is ensured, the equipment cost is reduced, and when the air inlet quantity is smaller than or equal to the air exhaust quantity, the negative pressure in the prefabricated cabin can be avoided by properly adjusting the quantity of the exhaust equipment, so that the rain leakage risk is reduced.
The step 1 comprises the following steps:
step 11, obtaining heating parameters of heating equipment in the prefabricated cabin, wherein the heating parameters comprise heating value Q of the heating equipment, indoor exhaust design temperature tp and air supply temperature ts, and estimating required ventilation quantity L based on the heating parameters, wherein the unit is m/h, and L=Q/[ 0.337 (tp-ts) ];
step 12, acquiring air inlet parameters of air inlet equipment, wherein the air inlet parameters comprise an air inlet area S1 and an air inlet wind speed V, the unit of the air speed V is m/S, the required ventilation area S is estimated based on the air inlet wind speed, S=L/(V×3600), and the unit of the ventilation area S is square meter;
and step 13, estimating the number m of air inlet devices needed in the prefabricated cabin according to the air inlet area S1, wherein m is the minimum integer greater than or equal to S/S1.
In the scheme, various factors of the image air intake quantity or the air intake demand quantity are fully considered, so that the estimated quantity accuracy of the air intake equipment is high.
The step 2 comprises the following steps:
step 21, obtaining exhaust parameters of exhaust equipment and the volume VL of a prefabricated cabin, wherein the exhaust parameters comprise the exhaust air quantity C in unit time and the ventilation times N in each hour, the unit is m/h, the first quantity N1 of the exhaust equipment needed in the prefabricated cabin is estimated based on the exhaust air quantity C and the volume VL, and N1 is the minimum integer greater than or equal to N x VL/C;
step 22, estimating a second number n2 of exhaust equipment required in the prefabricated cabin based on the exhaust air quantity C and the required ventilation quantity L, wherein n2 is a minimum integer greater than or equal to L/C;
step 23, comparing the sizes of n1 and n2, and if n1 is greater than or equal to n2, n=n1; if n1 < n2, then n=n2.
In the above scheme, step 21 estimates the number of exhaust devices from the direction of controlling the ventilation times in unit time, step 22 estimates the number of exhaust devices from the direction of completely discharging the waste heat of the heating device, and finally selects the larger value between the two as the number of final exhaust devices, so that the exhaust air volume can be ensured to reach the application requirement, and the accuracy is high.
In a more preferred embodiment, N has a value of 12.
The DLT 5053 standard requires 10 ventilation amounts per hour (namely, 1 ventilation in 6 minutes), but comprehensively considers that the wind resistance of equipment such as a dustproof screen, a wind valve, a loop control line welding suspended roof beam and the like in a prefabricated cabin is about 85 percent when air is convected, so that the scheme is set to require one ventilation in 5 minutes, namely, 12 ventilation times per hour, and the estimation accuracy can be further improved.
In the more optimized scheme, the method further comprises a step 4 of installing air inlet equipment and exhaust equipment, wherein the distance between two adjacent exhaust equipment is controlled to be 3-6 meters, and the air inlet equipment is installed at an air port.
In the scheme, the quantity of the ventilation and heat dissipation devices is controlled, the arrangement distance between the ventilation and heat dissipation devices is also controlled, and better ventilation and heat dissipation effects can be achieved through practical analysis.
Compared with the prior art, the method comprehensively considers the influence of the performance parameters of the prefabricated cabin, the heating equipment, the air inlet equipment and the air exhaust equipment on the air inlet quantity and the air exhaust quantity, and then respectively configures the quantity of the air inlet equipment and the air exhaust equipment according to the corresponding influence, and controls the ventilation and heat dissipation effects in the prefabricated cabin through reasonable quantity configuration, so that the better ventilation and heat dissipation effects can be achieved, the operation safety is ensured, the equipment cost is reduced, and when the air inlet quantity is smaller than or equal to the air exhaust quantity, the negative pressure formed in the prefabricated cabin can be avoided by properly adjusting the quantity of the air exhaust equipment, and the rain leakage risk of the prefabricated cabin is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for controlling ventilation and heat dissipation in a prefabricated cabin in an embodiment.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
Referring to fig. 1, the method for controlling ventilation and heat dissipation in a prefabricated cabin provided in this embodiment includes the following steps:
step 1, obtaining heating parameters of heating equipment and air inlet parameters of air inlet equipment in the prefabricated cabin, and estimating the number m of the air inlet equipment needed in the prefabricated cabin according to the heating parameters and the air inlet parameters.
The air inlet quantity is related to the performance parameters of the air inlet equipment, the air inlet demand quantity is related to the performance parameters of the heating equipment in the prefabricated cabin, and the air outlet quantity is related to the performance parameters of the air exhaust equipment, so that the heating equipment, the air inlet equipment and the air exhaust equipment used in the prefabricated cabin are firstly determined, corresponding working parameters are acquired, and then the required quantity of the air inlet equipment and the air exhaust equipment can be more accurately determined.
As an example of an embodiment, this step 1 includes:
step 11, obtaining heating parameters of heating equipment in the prefabricated cabin, wherein the heating parameters comprise heating value Q of the heating equipment, indoor exhaust design temperature tp and air supply temperature ts, and estimating required ventilation quantity L based on the heating parameters, wherein the unit is m/h, and L=Q/[ 0.337 (tp-ts) ]. The indoor exhaust design temperature tp is generally 40 ℃, and the ventilation quantity L required by the embodiment is directly estimated according to the national standard GB 50019-2015.
And 12, acquiring air inlet parameters of the air inlet equipment, wherein the air inlet parameters comprise an air inlet area S1 and an air inlet wind speed V, the unit of the air speed V is m/S, and the required ventilation area S is estimated based on the air inlet wind speed, S=L/(V×3600), and the unit of the ventilation area S is square meters. The air inlet equipment generally adopts a shutter or a roll-over door, and as for the equipment adopted in the embodiment, the air inlet speed V of the shutter is=4m/S, the air inlet speed V of the roll-over door is=3m/S, the air inlet area S1=0.08 square meter of the shutter, and the air inlet area S1=0.25 square meter of the roll-over door.
And step 13, estimating the number m of air inlet devices needed in the prefabricated cabin according to the air inlet area S1, wherein m is the minimum integer greater than or equal to S/S1. That is, if S/S1 is just an integer, then m takes the integer value, and if m < S/S1 < m+1, then m takes the value m+1. For example, when S/s1=5, m=5, and when S/s1=5.1, m=6.
The required ventilation amount L is estimated according to the national standard GB50019-2015, and therefore the number of air inlet devices estimated based on the required ventilation amount meets the national standard requirement. In addition, when the number of the air inlet devices is estimated, the air inlet area and the air inlet speed are comprehensively considered, so that the estimated number of the air inlet devices is more accurate and reliable.
And 2, acquiring exhaust parameters of the exhaust equipment, the volume of the prefabricated cabin and the required ventilation quantity, and estimating the number n of the exhaust equipment required in the prefabricated cabin according to the exhaust parameters, the volume of the prefabricated cabin and the required ventilation quantity.
In this step, the number of exhaust devices can be estimated from a plurality of angles, taking into account not only the performance parameters of the exhaust devices, but also the volume of the prefabricated cabin.
For example, as an example of an embodiment, this step 2 includes:
and 21, acquiring exhaust parameters of exhaust equipment and the volume VL of the prefabricated cabin, wherein the exhaust parameters comprise the exhaust air quantity C in unit time and the ventilation times N in each hour, the unit is m/h, the first quantity N1 of the exhaust equipment required in the prefabricated cabin is estimated based on the exhaust air quantity C and the volume VL, and the N1 is the minimum integer greater than or equal to N. This step is to estimate the number of exhaust devices from the perspective of the ventilation frequency.
The exhaust device typically employs a blower. The DLT 5053 standard requires 10 ventilation amounts per hour (i.e., 1 ventilation in 6 minutes), and in this embodiment, the wind resistance of the prefabricated cabin dust screen, the wind valve, the loop control line welding suspended roof beam, and other devices during air convection is comprehensively considered to be 85%, so by limiting ventilation once every 5 minutes (i.e., n=12), the data estimation of the exhaust device can be more accurate.
Step 22, estimating a second number n2 of exhaust equipment required in the prefabricated cabin based on the exhaust air quantity C and the required ventilation quantity L, wherein n2 is a minimum integer greater than or equal to L/C. The method comprises the step of estimating the number of exhaust devices from the viewpoint of waste heat of all devices in the exhaust chamber.
Step 23, comparing the sizes of n1 and n2, and if n1 is greater than or equal to n2, n=n1; if n1 < n2, then n=n2. That is, the larger value of n1 and n2 is taken as the number of exhaust devices finally determined.
In the step 2, the number of the required exhaust devices is estimated from different angles, and then a larger value is taken as the number of the finally determined exhaust devices, so that the number of the finally determined exhaust devices can meet the exhaust requirements from any angle.
And 3, calculating the actual air inlet quantity L1 according to the number of the air inlet devices, calculating the actual air outlet quantity L2 according to the number of the air outlet devices, comparing the sizes of the L1 and the L2, and configuring the air inlet devices and the air outlet devices according to the comparison result.
The actual air intake quantity L1 per hour can be calculated according to the number m of the air intake devices estimated in the step 1 and the air intake speed V of the air intake devices, and l1=mv3600.
The actual hourly exhaust air quantity L2, l2=c×n can be calculated from the number n of exhaust devices estimated in step 2 and the hourly exhaust air quantity C of the exhaust devices.
If L1 is more than L2, the air inlet equipment is configured according to the number m estimated in the step 1, and the air exhaust equipment is configured according to the number n estimated in the step 2.
If L1 is less than L2, reducing according to the integer value on the basis of the number n estimated in the step 2 until L1 is more than L2, then configuring air inlet equipment according to the number m estimated in the step 1, and configuring air exhaust equipment according to the number after the number is reduced. L1 is less than L2, which indicates that the prefabricated cabin is in a negative pressure state and the risk of sucking rainwater exists, so that the exhaust equipment is required to be reduced or the air inlet equipment is required to be increased, so that the air inlet quantity is greater than the air outlet quantity, namely L1 is greater than L2. In the step, the L1 is more than L2 by controlling in a mode of reducing the number of the exhaust devices, so that the national standard requirements (the number of the air inlet devices is estimated according to the national standard) can be met, the number of the exhaust devices can be reduced, and the cost of the devices is reduced.
If l1=l2, the air intake device is configured according to the number m estimated in step 1, and the air exhaust device is configured according to the number n-1 estimated in step 2. L1=l2, the prefabricated cabin is in a pressure equalizing state, and the risk of rain leakage does not exist in theory, but the safety can be guaranteed more reliably by configuring the exhaust equipment according to the number of n-1, and the risk of rain leakage is avoided.
According to the ventilation and heat dissipation control method, on one hand, the influence of the performance parameters of the prefabricated cabin, the heating equipment, the air inlet equipment and the air exhaust equipment on the air inlet quantity and the air exhaust quantity is comprehensively considered, and then the quantity of the air inlet equipment and the quantity of the air exhaust equipment are respectively estimated according to the corresponding influence, so that the reliability of the estimated quantity is high, and the ventilation and heat dissipation requirements are met; on the other hand, after the corresponding quantity is estimated, the configuration is not directly carried out according to the estimated quantity, but the accurate air inlet quantity and the accurate air outlet quantity are calculated by utilizing the quantity of the equipment, the estimated quantity is correspondingly adjusted through the magnitude relation of the air inlet quantity and the air outlet quantity, and finally the air inlet equipment and the air outlet equipment are configured according to the adjusted quantity. In short, the method controls the ventilation and heat dissipation effects in the prefabricated cabin through reasonable quantity configuration, so that not only can the better ventilation and heat dissipation effects be achieved, the operation safety is guaranteed, the equipment cost is reduced, but also negative pressure in the prefabricated cabin can be avoided through proper adjustment of the quantity of the exhaust equipment when the air inlet quantity is smaller than or equal to the air outlet quantity, and then the rain leakage risk is reduced.
Optionally, the method may further include step 4 of installing an air inlet device and an air exhaust device, wherein the distance between two adjacent air exhaust devices is controlled to be 3-6 meters, and the air inlet device is installed at the air port. When the ventilation and heat dissipation device is installed, the better and more uniform ventilation and heat dissipation effects can be achieved by controlling the device spacing at the same time.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (6)
1. The ventilation and heat dissipation control method in the prefabricated cabin is characterized by comprising the following steps of:
step 1, acquiring heating parameters of heating equipment and air inlet parameters of air inlet equipment in a prefabricated cabin, and estimating the number m of the air inlet equipment needed in the prefabricated cabin according to the heating parameters and the air inlet parameters;
step 2, acquiring exhaust parameters of exhaust equipment, the volume of a prefabricated cabin and required ventilation quantity, and estimating the number n of the exhaust equipment required in the prefabricated cabin according to the exhaust parameters, the volume of the prefabricated cabin and the required ventilation quantity; m and n are integers;
step 3, calculating actual air inlet quantity L1 according to the number of the air inlet devices, calculating actual air outlet quantity L2 according to the number of the air outlet devices, comparing the sizes of the L1 and the L2, and configuring the air inlet devices and the air outlet devices according to the comparison result;
if L1 is more than L2, configuring air inlet equipment according to the number m estimated in the step 1, and configuring air exhaust equipment according to the number n estimated in the step 2;
if L1 is less than L2, reducing according to integer value on the basis of the number n estimated in the step 2 until L1 is more than L2, then configuring air inlet equipment according to the number m estimated in the step 1, and configuring air exhaust equipment according to the number after the number is reduced;
if l1=l2, the air intake device is configured according to the number m estimated in step 1, and the air exhaust device is configured according to the number n-1 estimated in step 2.
2. The method for controlling ventilation and heat dissipation in a prefabricated cabin according to claim 1, wherein the step 1 comprises:
step 11, obtaining heating parameters of heating equipment in the prefabricated cabin, wherein the heating parameters comprise heating value Q of the heating equipment, indoor exhaust design temperature tp and air supply temperature ts, and estimating required ventilation quantity L based on the heating parameters, wherein the unit is m/h, and L=Q/[ 0.337 (tp-ts) ];
step 12, acquiring air inlet parameters of air inlet equipment, wherein the air inlet parameters comprise an air inlet area S1 and an air inlet wind speed V, the unit of the air speed V is m/S, the required ventilation area S is estimated based on the air inlet wind speed, S=L/(V×3600), and the unit of the ventilation area S is square meter;
and step 13, estimating the number m of air inlet devices needed in the prefabricated cabin according to the air inlet area S1, wherein m is the minimum integer greater than or equal to S/S1.
3. The method for controlling ventilation and heat dissipation in a prefabricated cabin according to claim 2, wherein the step 2 comprises:
step 21, obtaining exhaust parameters of exhaust equipment and the volume VL of a prefabricated cabin, wherein the exhaust parameters comprise the exhaust air quantity C in unit time and the ventilation times N in each hour, the exhaust air quantity is m per hour, the first quantity N1 of the exhaust equipment required in the prefabricated cabin is estimated based on the exhaust air quantity C and the volume VL, and N1 is a minimum integer which is greater than or equal to N.times.VL/C;
step 22, estimating a second number n2 of exhaust equipment required in the prefabricated cabin based on the exhaust air quantity C and the required ventilation quantity L, wherein n2 is a minimum integer greater than or equal to L/C;
step 23, comparing the sizes of n1 and n2, and if n1 is greater than or equal to n2, n=n1; if n1 < n2, then n=n2.
4. A prefabricated cabin ventilation and heat dissipation control method according to claim 3, characterized in that N takes a value of 12.
5. The method for controlling ventilation and heat dissipation in a prefabricated cabin according to claim 1, wherein the air inlet device is a shutter or a roll-over door, and the air exhaust device is a fan.
6. The method for controlling ventilation and heat dissipation in a prefabricated cabin according to claim 1, further comprising the step 4 of installing an air inlet device and an air exhaust device, wherein the distance between two adjacent air exhaust devices is controlled to be 3-6 meters, and the air inlet device is installed at an air port.
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| CN113972565A (en) * | 2021-10-29 | 2022-01-25 | 广东电网有限责任公司 | Dampproofing condensation system of preventing of prefabricated cabin transformer substation |
| CN113889887A (en) * | 2021-11-09 | 2022-01-04 | 中冶西北工程技术有限公司 | Heat dissipation method for transformer room of box-type substation |
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