CN116437599A - Fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device and method - Google Patents
Fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device and method Download PDFInfo
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- CN116437599A CN116437599A CN202310231933.0A CN202310231933A CN116437599A CN 116437599 A CN116437599 A CN 116437599A CN 202310231933 A CN202310231933 A CN 202310231933A CN 116437599 A CN116437599 A CN 116437599A
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- 238000009833 condensation Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000005494 condensation Effects 0.000 title claims abstract description 30
- 230000002265 prevention Effects 0.000 claims abstract description 11
- 238000009423 ventilation Methods 0.000 claims description 29
- 238000007791 dehumidification Methods 0.000 claims description 27
- 230000008020 evaporation Effects 0.000 claims description 13
- 238000001704 evaporation Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000010025 steaming Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 229920006395 saturated elastomer Polymers 0.000 claims description 11
- 230000009191 jumping Effects 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 29
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0212—Condensation eliminators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a device and a method for dehumidifying, dewatering and condensation prevention of a fireproof and explosion-proof box, which are characterized in that: the box casing including the mounting hole, the tuber pipe module, control module, tuber pipe module comprises tuber pipe, filter screen, clamping ring, and the screw thread cover, and the tuber pipe module is fixed at the mounting hole of box casing that has the mounting hole, and control module screws on the screw thread cover to laminate with tuber pipe module terminal surface, control module comprises fan, maze exhaust piece, main control PCB module, power, inside humiture module, outside humiture module. After water or moisture enters the box, the moisture is actively discharged outside the box, and meanwhile, a reasonable algorithm is used for keeping the moisture in the box discharged efficiently, so that the energy utilization rate is improved, and particularly when a battery is used for supplying power, the effective working time can be prolonged, and the water in the box is discharged as much as possible.
Description
Technical Field
The invention belongs to a humidity regulating device in a box, and particularly relates to a device and a method for dehumidifying, removing water and preventing condensation of a fireproof and explosion-proof box.
Background
The equipment and the equipment installed outdoors are protected by the box-like shell, so that the internal electric insulation is reduced or the relative movement between mechanical kinematic pairs is not smooth or blocked due to the water inflow or the moisture inflow, the equipment and the equipment are usually required to be maintained in time or the moisture-proof measures of water drainage are adopted, and the moisture in the equipment is actively discharged.
Some devices have high requirements on self safety, and cannot be randomly connected with a power supply to prevent dangers caused by influencing normal operation of the devices, and materials with combustion and explosion risks, such as lithium batteries, cannot be arranged in the devices to prevent dangers caused by damaging the devices. With such devices, a method of actively exhausting moisture from the inside thereof is required to consider a fire-proof and explosion-proof structure, and an additional power supply cannot be connected to the inside of the case, and a device containing inflammable and explosive materials cannot be installed inside the case.
Disclosure of Invention
The invention aims to provide a device and a method for dehumidifying, dewatering and condensation prevention of a fireproof and explosion-proof box, which actively discharge moisture outside the box after water or moisture enters the box, and simultaneously use a reasonable algorithm to keep high-efficiency water in the box to be discharged, so that the energy utilization rate is improved, and particularly when a battery is used for supplying power, the effective working time can be prolonged, and water in the box can be discharged as much as possible.
The technical scheme of the invention is as follows: relates to a fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device, which is characterized in that: it comprises the following steps: the air duct module consists of an air duct, a filter screen and a compression ring, wherein the air duct is of a tubular structure, the inside of the air duct is of a step hole shape, the filter screen is clung to the step surface of an inner hole of the air duct, the compression ring is clung to the filter screen, the inner hole corresponding to the air duct is in interference fit or welding or threaded connection, the filter screen is tightly pressed after the compression ring is assembled, the periphery of the air duct is of a step shape, at least two steps exist, the thread sleeve is of a tubular shape, the inner hole is provided with a step, the large hole is provided with an inner thread, the thread sleeve is sleeved in one end of the air duct, then the step at the other end of the air duct cannot be separated, the small end of the air duct penetrates into the mounting hole of the box shell with the mounting hole from the outside and is welded or riveted with the mounting hole, or the small end of the air duct penetrates into the mounting hole of the box shell with the mounting hole from the outside and is fixed with the locking ring.
The device further comprises a control module, and the control module is in threaded connection with the threaded sleeve in seasons in which condensation prevention or dehumidification drainage is needed.
The control module comprises: the main control system comprises a fan, a labyrinth exhaust block, a main control PCB module, a power supply, an internal temperature and humidity module and an external temperature and humidity module; the labyrinth exhaust block is hollow columnar, the middle through hole forms an air channel communicated with two ends, a fan is arranged at the air inlet end of the air channel, the air outlet end of the air channel is provided with a labyrinth air channel, the periphery of the air inlet end of the labyrinth exhaust block is provided with external threads and is matched with the internal threads of the threaded sleeve, the main control PCB module is tightly attached to the end of the labyrinth air channel of the labyrinth exhaust block and is fixed to form a complete labyrinth air channel, one end of the labyrinth air channel is communicated with the air outlet end of the air channel, the other end of the labyrinth air channel is communicated with the outside, the power supply, the fan, the internal temperature and humidity module and the external temperature and humidity module are respectively connected with the main control PCB module, a temperature and humidity sensor in the internal temperature and humidity module is communicated with a cavity where the fan is located, and a temperature and humidity sensor in the external temperature and humidity module is communicated with the outside atmosphere.
The locking ring is provided with an internal thread, the small end of the air pipe is an external thread, and the small end of the air pipe penetrates into the mounting hole of the box shell with the mounting hole from the outside and is in threaded connection with the locking ring.
The compression ring is an external thread, and an inner hole corresponding to the air pipe is an internal thread; the compression ring is in threaded connection with an inner hole corresponding to the air pipe.
The novel dehumidifying and dehumidifying device is characterized by further comprising a sealing module, wherein the sealing module is used for replacing the control module when the box is required to be sealed to prevent gas exchange inside and outside the box in seasons when condensation prevention or dehumidifying and draining are not required, and the sealing module is provided with external threads and is in threaded connection with the internal threads of the threaded sleeve.
Or including the maze ventilation module, when need not prevent condensation or dehumidify the drainage season, when needs are taken a breath naturally, use maze ventilation module to replace control module, maze ventilation module has the external screw thread, carries out threaded connection with the internal screw thread of thread bush, and maze ventilation module has the through-hole at intercommunication external screw thread axis both ends, and has maze ventilation structure and links to each other with through-hole and outside atmosphere at the other end, and after the assembly maze ventilation module, can take a breath naturally through the maze passageway of the device inside and outside the box.
The invention relates to a method for dehumidifying, dewatering and anti-condensation of a fireproof and explosion-proof box, which is characterized by comprising the following steps of: the control module works according to the following procedures after being electrified:
step one: reading in the working period parameters of the anti-condensation exhaust of the system, including the start time T of the anti-condensation exhaust Row 1 Duration H of anti-condensation exhaust Row 1 Reading in the parameters of the dehumidifying exhaust working period of the system, including the dehumidifying exhaust starting time T Row 2 Duration H of dehumidification and exhaust Row 2 ；
Step two: reading in the determined dehumidification and exhaust working parameters, and the working time length H of the fan Blowing Evaporation waiting period H Steaming A temperature difference judgment threshold value delta t, a humidity difference judgment threshold value delta RH, a saturated vapor pressure difference judgment threshold value delta VPD and a dew point judgment threshold value delta Td, and storing the temperature difference judgment threshold value delta t, the humidity difference judgment threshold value delta RH, the saturated vapor pressure difference judgment threshold value delta VPD and the dew point judgment threshold value delta Td in a specified address;
step three: reading in the current time T;
step four: if T and T Row 1 Or T Row 1 +H Row 1 Or T Row 2 Or T Row 2 +H Row 2 And if the difference value is smaller than the specified value, generating interruption, otherwise returning to the step three.
Interrupt handling procedure: reading the interruption generation time T, if T Row 1 ≤T＜T Row 1 +H Row 1 Executing the anti-condensation exhaust procedure, if T Row 2 ≤T＜T Row 2 +H Row 2 Executing the dehumidifying exhaust procedure, otherwise, stopping the condensation preventing exhaust procedure and dehumidifyingAnd (5) an exhaust procedure.
The anti-condensation exhaust procedure is carried out according to the following steps,
step one: reading the current relative humidity and temperature value RH of the internal temperature and humidity module A ，RH A Expressed as a percentage;
step two: if RH A When the data is more than or equal to 98% (the data can be adjusted according to the actual requirement of the use site), starting the fan to exhaust and starting timing, entering the next step, otherwise returning to the step one;
step three: and reading in the timing time.
Step four: whether the timing time reaches the exhaust working time T Row of rows If not, returning to the step three.
Step five: and closing the fan, resetting the timer, and starting the timer.
Step six: standby, wait time reaches several times evaporation waiting time p×T Steaming The p value is determined according to the actual situation of the use site.
Step seven: and (5) resetting the timer and returning to the step one.
The control module is used for controlling the T with the highest water vapor ratio in the box every day according to the 24-hour temperature change rule and the condensation principle Row 2 To T Row 2 +H Row 2 The dehumidification and exhaust process is executed in a high-temperature period of time, and T is the time before sunrise which is most likely to be condensed Row 1 To T Row 1 +H Row 1 And executing the anti-condensation exhaust program in the time period, and waiting for the rest time period.
The dehumidification and exhaust process is performed according to the following steps,
step one: reading the current relative humidity and temperature value RH of the internal temperature and humidity module A 、t A And the current relative humidity and the temperature value RH of the external temperature and humidity module B 、t B ，RH A And RH (relative humidity) B Expressed as a percentage;
step two: if t A -t B Is equal to or less than Δt, and RH A -RH B If the temperature is more than or equal to delta RH, starting the fan to exhaust and starting timing, jumping to the step six, otherwise, entering the next step;
step three: calculating saturated vapor pressure difference VPD according to the current temperature and humidity values, and using VPD A Indicating the value of VPD in the box, VPD B Indicating the value of VPD outside the box, when VPD B -VPD A When the pressure is not less than delta VPD, starting the fan to exhaust and starting timing, jumping to the step six, otherwise, entering the next step;
step four: according to the current relative humidity and temperature values measured by the internal temperature and humidity module and the external temperature and humidity module, calculating the absolute humidity values of the inside and the outside of the box, when the absolute humidity of the inside of the box is larger than the absolute humidity of the outside of the box, starting a fan to exhaust and starting timing, and jumping to the step six, otherwise, entering the next step;
step five: calculating the dew point value Td in the current box A And dew point value Td of the environment outside the box B When Td is A -Td B When the temperature is more than or equal to delta Td, starting the fan to exhaust and starting timing, otherwise, returning to the step one;
step six: reading in timing time;
step seven: whether the timing time reaches the exhaust working time T Row of rows If not, returning to the step five;
step eight: closing the fan, resetting the timer, and starting the timer;
step nine: standby, wait time reaches evaporation waiting time T Steaming ；
Step ten: and (5) resetting the timer and returning to the step one.
The invention has the advantages that: after the control module monitors that the humidity inside the box is greater than the humidity outside the box and exceeds a threshold value, the fan can be controlled to discharge humid gas in the box, meanwhile, the relative dry gas outside the box is supplemented into the box, in the process, the discharged water molecules of the box are more than the water molecules entering the box, the continuous ventilation time is calculated according to the effective volume of the box so as to prevent too much invalid exhaust waste energy, then continuous waiting is carried out, so that the water in the box is fully evaporated, when the water in the box is evaporated to be saturated, the total water molecules in the effective volume of the box is not increased, the continuous ventilation efficiency is the highest at the moment, therefore, the downtime waiting time is determined according to the current temperature and the effective volume of the box, in practical application, the estimated downtime waiting time is only needed by combining the requirements of dehumidification time limit, and then the next cycle is started, the control module monitors the humidity difference between the inside humidity of the box and the humidity outside the box, after a plurality of times of circulation, the water in the box is evaporated and discharged outside the box, the humidity difference between the inside humidity of the box and the outside humidity of the box is smaller than a set threshold value, the device does not exhaust any more, but after a certain time interval, the device continuously monitors the humidity difference between the inside humidity of the box and the humidity outside the box, if the inside humidity of the box is higher than the outside humidity of the box and the difference exceeds the set threshold value, the control module starts a fan to continuously exhaust, so that the humidity in the box is basically maintained to be close to the humidity outside the box, when water is accumulated in the box, the water in the box is evaporated as soon as possible by discharging the moisture in the box, and then the moisture is continuously discharged until all the water in the box is evaporated, and the internal humidity of the box is not increased any more. When the accumulated water amount is relatively large, the accumulated water can be exhausted in a plurality of days, but the probability of condensation can be effectively reduced before the accumulated water is completely exhausted or the accumulated water is exhausted by manual intervention.
The stop mode can prevent the fan from being damaged due to continuous operation, can also keep high-efficiency water in the box to be discharged, improves the energy utilization rate, and can prolong the effective working time and discharge water in the box as much as possible especially when a battery is used for supplying power.
Can not be tied up
The control module of the battery can not be guaranteed to be used in the season of normal work when exposed or ambient temperature, the sealing module or the labyrinth ventilation module can be installed to replace the control module, sealing of an inner hole of the air pipe module can be achieved when the sealing module is installed, the inner and outer air exchange at the position is completely isolated, water is prevented from flowing in or out, the inner and outer air exchange at the position can be guaranteed when the labyrinth ventilation module is installed, and rainwater is prevented from flowing into the box when accumulated water outside the box does not exceed a labyrinth air channel.
The invention will be described in further detail with reference to the accompanying drawings of embodiments.
Drawings
FIG. 1 is a schematic diagram of a fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device fixed on a box shell;
FIG. 2 is a schematic view of a duct module;
FIG. 3 is a schematic diagram of a control module.
In the figure: 1. a locking ring; 2. a box housing having a mounting hole; 3. an air duct module; 3-1, an air pipe; 3-2, a filter screen; 3-3, a compression ring; 3-4, a thread sleeve; 4. a control module; 4-1, a fan; 4-2, labyrinth exhaust blocks; 4-3, a main control PCB module.
Description of the embodiments
The following detailed description, structural features and methods of the present invention will be described in detail with reference to the accompanying drawings and examples in order to further illustrate the technical means and methods of the present invention to achieve the intended purpose.
Example 1
The invention relates to a device and a method for dehumidifying, dewatering and condensation prevention of a fireproof and explosion-proof box, which are characterized by comprising the following steps: the air pipe module 3 consists of an air pipe 3-1, a filter screen 3-2 and a pressing ring 3-3, wherein the air pipe 3-1 is of a tubular structure, the inside of the air pipe is of a step hole shape, the filter screen 3-2 is tightly attached to the step surface of an inner hole of the air pipe 3-1, the pressing ring 3-3 is tightly attached to the filter screen 3-2, the inner hole of the pressing ring 3-3 corresponding to the air pipe 3-1 is in interference fit or welding, the pressing ring 3-3 tightly presses the filter screen 3-2 after being assembled, the periphery of the air pipe 3-1 is of a step shape, at least two steps exist, the threaded sleeve 3-4 is tubular, the inner hole is provided with a step, the large hole is provided with internal threads, and after the threaded sleeve 3-4 is sleeved at one end of the air pipe 3-1, the step at the other end of the air pipe 3-1 is blocked and cannot deviate from, so that the air pipe module 3 is formed.
The small end of the air pipe 3-1 is an external thread, the inner hole of the locking ring 1 is an internal thread, the locking ring is matched with the external thread of the small end of the air pipe 3-1, the small end of the air pipe 3-1 is matched with the mounting hole of the box shell 2 with the mounting hole and can pass through the air pipe and is stopped by a step, after the air pipe module 3 is formed, the air pipe is mounted from the outside of the box shell 2 with the mounting hole, the small end of the air pipe 3-1 penetrates from the mounting hole of the box shell 2 with the mounting hole, the locking ring 1 is screwed into the small end thread of the air pipe 3-1 from the inside of the box shell 2 with the mounting hole, and the locking ring 1 end face and the step face of the air pipe 3-1 are tightly clamped with the box shell 2 with the mounting hole, so that the air pipe module 3 is fixed on the box shell 2 with the mounting hole.
The control module 4 is composed of a fan 4-1, a labyrinth exhaust block 4-2, a main control PCB module 4-3, a power supply, an internal temperature and humidity module and an external temperature and humidity module, wherein the labyrinth exhaust block 4-2 is hollow and columnar, a ventilation channel communicated with two ends is formed by a middle through hole, the fan is installed at the air inlet end of the ventilation channel, the labyrinth air channel is arranged at the air outlet end of the ventilation channel, the periphery of the air inlet end of the labyrinth exhaust block 4-2 is provided with an external thread and is matched with the internal thread of the thread sleeve 3-4, the main control PCB module 4-3 is tightly attached to the end of the labyrinth air channel of the labyrinth exhaust block 4-2 and is fixed, one end of the labyrinth air channel is communicated with the air outlet end of the ventilation channel, the other end of the labyrinth air channel is communicated with the outside, the power supply, the fan, the internal temperature and humidity module and the external temperature and humidity module are respectively connected with the main control PCB module 4-3, a temperature and humidity sensor in the internal temperature and humidity module is communicated with a cavity containing the fan 4-1, and the temperature and humidity sensor in the external temperature and humidity module are communicated with the external atmosphere.
After the control module 4 is assembled, the labyrinth air exhaust block 4-2 is in threaded connection with the threaded sleeve 3-4, an outlet of the labyrinth air channel of the labyrinth air exhaust block 4-2 communicated with the outside atmosphere is kept vertically downwards, the threaded sleeve 3-4 is rotated until the end of the labyrinth air exhaust block 4-2 is tightly attached to the end of the air pipe 3-1, and the control module 4 is started to start working after the fastening and connection of all parts are checked.
Before the control module 4 works, the following dehumidifying and exhausting parameters are determined according to the specific conditions of the box:
a. determining a fan operating time H Blowing According to the effective volume in the box, calculating and determining the exhaust working time length H Blowing Exhaust operation time H Blowing Is proportional to the effective volume L in the box, inversely proportional to the air quantity CFM of the fan and can be expressed as H Blowing k×l/CFM, K represents the exhaust coefficient, and may be determined by actual measurement or estimated, and may be a value close to 1 for energy saving, and a relatively large number for improving the efficiency of discharging accumulated water in the box;
b. determining the evaporation waiting period H Steaming To save energy and improve efficiency, the internal accumulated water is evaporated fully and then continuedActive exhaust, and the interval time between the two active exhaust is called as evaporation waiting time H Steaming Evaporation waiting period H Steaming The function is a function of the current temperature and the effective volume of the interior of the box, can be simply estimated, and is in linear relation with the evolution of the current temperature and the effective volume of the air in the box;
c. the temperature difference judging threshold deltat is a threshold for judging whether the temperatures inside and outside the box are consistent or not by using the difference value of the temperature inside and outside the current box, for example, the threshold can be 1 ℃;
d. the humidity difference judging threshold value delta RH is used for judging whether the threshold value of the exhaust is needed or not by using the current humidity difference value of the inside and the outside of the box, for example, 2% can be taken;
e. saturated steam pressure difference judging threshold delta VPD, judging whether a threshold for exhausting is needed or not by using the saturation degree of the actual steam pressure distance between the inside and the outside of the current box, for example, 0.1kPa is preferable;
f. a dew point judgment threshold Δtd, which is a threshold for judging whether to exhaust by using the difference between the internal and external dew points of the current box, for example, 0.2 ℃;
then, the device performs drainage, dehumidification and condensation prevention according to the following principle.
According to the 24-hour temperature change law and the condensation principle, the dehumidifying and exhausting program is executed only in the high-temperature time period with the highest water vapor ratio in the box every day, the condensation preventing and exhausting program is executed in the time period before sunrise, and the rest time period is standby. For example, if it is determined that condensation prevention exhaust is performed between 3 and 6 hours and dehumidification exhaust is performed between 12 and 18 hours, the dehumidification exhaust process is performed between 3 and 6 hours, the dehumidification exhaust process is performed between 12 and 18 hours after 6 hours, and the dehumidification exhaust process is performed between 18 hours and 3 hours after 18 hours.
In order to achieve the aim of high efficiency and energy saving, the anti-condensation exhaust and the dehumidification exhaust are carried out according to intermittent operation.
Definition:
the time when the anti-condensation exhaust process starts to be executed is the anti-condensation exhaust start time, which is denoted as T Row 1 ；
Time span for performing anti-condensation venting proceduresThe degree is the duration of the anti-condensation exhaust, and is marked as H Row 1 ；
The time at which the dehumidification exhaust process starts is the dehumidification exhaust start time, denoted as T Row 2 ；
The time span of executing the dehumidification exhaust program is the dehumidification exhaust duration, and is marked as H Row 2 ；
The main control PCB module 4-3 inputs relative humidity parameters and temperature parameters from the internal temperature and humidity module and the external temperature and humidity module, the internal temperature and humidity measurement module is communicated with the internal environment of the box shell 2 with the mounting holes, and the relative humidity and temperature values inside the box are measured and respectively recorded as RH A T A The external temperature and humidity module is communicated with the external atmospheric environment of the box, and measures the relative humidity and temperature values of the external atmospheric environment of the box, which are respectively recorded as RH B T B 。
The control module 4 works according to the following procedure after being electrified:
step one: reading in the working period parameters of the anti-condensation exhaust of the system, including the start time T of the anti-condensation exhaust Row 1 Duration H of anti-condensation exhaust Row 1 Reading in the parameters of the dehumidifying exhaust working period of the system, including the dehumidifying exhaust starting time T Row 2 Duration H of dehumidification and exhaust Row 2 ；
Step two: reading in the determined dehumidification and exhaust working parameters, and the working time length H of the fan Blowing Evaporation waiting period H Steaming A temperature difference judgment threshold value delta t, a humidity difference judgment threshold value delta RH, a saturated vapor pressure difference judgment threshold value delta VPD and a dew point judgment threshold value delta Td, and storing the temperature difference judgment threshold value delta t, the humidity difference judgment threshold value delta RH, the saturated vapor pressure difference judgment threshold value delta VPD and the dew point judgment threshold value delta Td in a specified address;
step three: reading in the current time T;
step four: if T and T Row 1 Or T Row 1 +H Row 1 Or T Row 2 Or T Row 2 +H Row 2 The difference value is smaller than a specified value, interruption is generated, and otherwise, the step III is returned;
interrupt handling procedure: reading the interruption generation time T, if T Row 1 ≤T＜T Row 1 +H Row 1 Executing the anti-condensation exhaust procedure, if T Row 2 ≤T＜T Row 2 +H Row 2 ExecuteAnd if not, stopping the condensation prevention exhaust procedure and the dehumidification exhaust procedure.
The dehumidification and exhaust process is carried out according to the following steps:
step one: reading the current relative humidity and temperature value RH of the internal temperature and humidity module A 、t A And the current relative humidity and the temperature value RH of the external temperature and humidity module B 、t B ，RH A And RH (relative humidity) B Expressed as a percentage;
step two: if t A -t B Is equal to or less than Δt, and RH A -RH B If the temperature is more than or equal to delta RH, starting the fan to exhaust and starting timing, jumping to the step six, otherwise, entering the next step;
step three: calculating saturated vapor pressure difference VPD according to the current temperature and humidity values, and using VPD A Indicating the value of VPD in the box, VPD B Indicating the value of VPD outside the box, when VPD B -VPD A When the pressure is not less than delta VPD, starting the fan to exhaust and starting timing, jumping to the step six, otherwise, entering the next step;
step four: according to the current relative humidity and temperature values measured by the internal temperature and humidity module and the external temperature and humidity module, calculating the absolute humidity values of the inside and the outside of the box, when the absolute humidity of the inside of the box is larger than the absolute humidity of the outside of the box, starting a fan to exhaust and starting timing, and jumping to the step six, otherwise, entering the next step;
step five: calculating the dew point value Td in the current box A And dew point value Td of the environment outside the box B When Td is A -Td B When the temperature is more than or equal to delta Td, starting the fan to exhaust and starting timing, otherwise, returning to the step one;
step six: reading in timing time;
step seven: whether the timing time reaches the exhaust working time T Row of rows If not, returning to the step five;
step eight: closing the fan, resetting the timer, and starting the timer;
step nine: standby, wait time reaches evaporation waiting time T Steaming ；
Step ten: and (5) resetting the timer and returning to the step one.
The anti-condensation exhaust procedure is carried out as follows:
step one: reading the current relative humidity and temperature value RH of the internal temperature and humidity module A 、t A And the current relative humidity and the temperature value RH of the external temperature and humidity module B 、t B ，RH A And RH (relative humidity) B Expressed as a percentage;
step two: if RH A When the data is more than or equal to 98% (the data can be adjusted according to the actual requirement of the use site), starting the fan to exhaust and starting timing, entering the next step, otherwise returning to the step one;
step three: reading in timing time;
step four: whether the timing time reaches the exhaust working time T Row of rows If not, returning to the third step;
step five: closing the fan, resetting the timer, and starting the timer;
step six: standby, wait time reaches several times evaporation waiting time p×T Steaming The p value is determined according to the actual situation of the use site;
step seven: and (5) resetting the timer and returning to the step one.
The device is matched with a sealing module or a labyrinth ventilation module, the control module 4 can be replaced when condensation prevention or dehumidification drainage is not needed, the sealing module and the labyrinth ventilation module are provided with threaded interfaces for assembly, which are the same as the control module 4, and can be in threaded connection with the internal threads of the threaded sleeve 3-4, the sealing module is free from through holes communicated with the two ends of the axis of the external threads, the through holes of the air pipe 3-1 can be plugged after the sealing module is assembled, and the inside and the outside of the box cannot be ventilated through the device; the labyrinth ventilation module is still provided with a through hole communicated with the two ends of the external thread axis, the through hole is provided with a labyrinth structure, and after the labyrinth ventilation module is assembled, the inside and the outside of the box can be naturally ventilated through a labyrinth channel of the device.
Example 2
The device and the method for dehumidifying, dehydrating and preventing condensation of the fireproof and explosion-proof box according to the embodiment 1 are characterized in that: the small end of the air pipe 3-1 is matched with the inner hole of the locking ring 1 by a hole shaft, and is welded and fixed after assembly, and the rest is the same as the embodiment 1 and will not be described in detail.
Example 3
The device and the method for dehumidifying, dehydrating and preventing condensation of the fireproof and explosion-proof box according to the embodiment 1 are characterized in that: the small end of the air pipe 3-1 is matched with the mounting hole of the box shell 2 with the mounting hole by a hole shaft, and is welded and fixed after assembly or fixed by riveting expansion deformation, the locking ring 1 is canceled, and the rest is the same as the embodiment 1 and is not described in detail.
Example 4
The device and the method for dehumidifying, dehydrating and preventing condensation of the fireproof and explosion-proof box according to the embodiment 1 are characterized in that: the inner holes of the compression ring 3-3 corresponding to the air pipes 3-1 are in threaded connection, the outer periphery of the compression ring 3-3 is an external thread, the inner holes of the air pipes 3-1 corresponding to the internal thread, and the rest is the same as that of the embodiment 1 and will not be described in detail.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be obvious to those skilled in the art that several may be made without departing from the inventive concept.
Claims (8)
1. Fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device is characterized in that: it comprises the following steps: the box casing (2) that has the mounting hole, tuber pipe module (3), control module (4), tuber pipe module (3) are by tuber pipe (3-1), filter screen (3-2), clamping ring (3-3), threaded sleeve (3-4) are constituteed, tuber pipe (3-1) are tubular structure, inside is the step hole form, the step face of tuber pipe (3-1) hole is hugged closely to filter screen (3-2), filter screen (3-2) is hugged closely to clamping ring (3-3), the hole that clamping ring (3-3) corresponds with tuber pipe (3-1) is interference fit or welding, tightly push down filter screen (3-2) after clamp ring (3-3) are assembled, tuber pipe (3-1) periphery is the step form, there are two steps at least, threaded sleeve (3-4) are the tubulose, the hole has the step, the macropore has the internal thread from the one end of tuber pipe (3-1) embolia post, step department at the tuber pipe (3-1) other end is by the backstop can not, the small end of tuber pipe (3-1) penetrates from outside has the mounting hole's box casing (2) and control module (4) that corresponds with the mounting hole, control module that is fixed connection includes as an organic whole, it is formed by riveting: the air conditioner comprises a fan (4-1), a labyrinth air exhausting block (4-2), a main control PCB module (4-3), a power supply, an internal temperature and humidity module and an external temperature and humidity module, wherein the labyrinth air exhausting block (4-2) is hollow and columnar, a ventilation channel communicated with two ends is formed by a middle through hole, the fan (4-1) is installed at the air inlet end of the ventilation channel, the labyrinth air channel is arranged at the air outlet end of the ventilation channel, the periphery of the air inlet end of the labyrinth air exhausting block (4-2) is provided with external threads and matched with the internal threads of a threaded sleeve (3-4), the main control PCB module (4-3) is tightly attached to the end of the labyrinth air channel of the labyrinth air exhausting block (4-2) and fixed to form a complete labyrinth air channel, one end of the labyrinth air channel is communicated with the air outlet end of the ventilation channel, the other end of the labyrinth air channel is communicated with the outside, the power supply, the internal temperature and humidity module, the external temperature and humidity module and the fan are connected with the control PCB through wires, and the temperature and humidity sensor in the internal temperature and humidity module are placed at the position communicated with the cavity where the fan (4-1) is located.
2. The fire-proof and explosion-proof box dehumidifying, dewatering and condensation-preventing device according to claim 1, which is characterized in that: the box comprises a box body and is characterized by further comprising a locking ring (1), wherein the locking ring (1) is provided with a threaded through hole, the part of the small end of the air pipe (3-1) penetrating into the box body (2) with the mounting hole from the outside is provided with external threads matched with the box body, and the locking ring (1) is in threaded connection with the small end of the air pipe (3-1) and is connected with the box body (2) with the mounting hole into a whole.
3. The fire-proof and explosion-proof box dehumidifying, dewatering and condensation-preventing device according to claim 1, which is characterized in that: the inner hole of the compression ring (3-3) corresponding to the air pipe (3-1) is in threaded connection, the outer periphery of the compression ring (3-3) is provided with external threads, and the inner hole of the air pipe (3-1) corresponding to the compression ring is provided with matched internal threads.
4. The fire-proof and explosion-proof box dehumidifying, dewatering and condensation-preventing device according to claim 1, which is characterized in that: the novel labyrinth ventilation device is characterized by further comprising a sealing module or a labyrinth ventilation module, wherein the sealing module or the labyrinth ventilation module is used for replacing the control module (4) when the box shell (2) requiring the mounting hole is sealed and the inside and the outside are isolated in seasons without condensation prevention or dehumidification drainage, the labyrinth ventilation module is provided with external threads and is in threaded connection with the internal threads of the thread sleeve (3-4), the labyrinth ventilation module is provided with a through hole communicated with the two ends of the axis of the external threads, and a labyrinth ventilation structure is arranged at the other end and is connected with the through hole and the outside atmosphere, and after the labyrinth ventilation module is assembled, the inside and the outside of the box can be naturally ventilated through a labyrinth passage of the device.
5. A method for dehumidifying, dehydrating and preventing condensation of a fireproof and explosion-proof box is characterized by comprising the following steps: the control module (4) works according to the following procedures after being electrified:
step one: reading in the working period parameters of the anti-condensation exhaust of the system, including the start time T of the anti-condensation exhaust Row 1 Duration H of anti-condensation exhaust Row 1 Reading in the parameters of the dehumidifying exhaust working period of the system, including the dehumidifying exhaust starting time T Row 2 Duration H of dehumidification and exhaust Row 2 ；
Step two: reading in the determined dehumidification and exhaust working parameters, and the working time length H of the fan Blowing Evaporation waiting period H Steaming A temperature difference judgment threshold value delta t, a humidity difference judgment threshold value delta RH, a saturated vapor pressure difference judgment threshold value delta VPD and a dew point judgment threshold value delta Td, and storing the temperature difference judgment threshold value delta t, the humidity difference judgment threshold value delta RH, the saturated vapor pressure difference judgment threshold value delta VPD and the dew point judgment threshold value delta Td in a specified address;
step three: reading in the current time T;
step four: if T and T Row 1 Or T Row 1 +H Row 1 Or T Row 2 Or T Row 2 +H Row 2 The difference value is smaller than a specified value, interruption is generated, and otherwise, the step III is returned;
the interrupt handling procedure proceeds as follows: reading the interruption generation time T, if T Row 1 ≤T＜T Row 1 +H Row 1 Performing anti-condensation exhaustProcedure, if T Row 2 ≤T＜T Row 2 +H Row 2 And executing the dehumidification exhaust procedure, and if not, stopping the condensation prevention exhaust procedure and the dehumidification exhaust procedure.
6. The method for dehumidifying, dehydrating and preventing condensation of the fireproof and explosion-proof box according to claim 5, which is characterized in that: the T is Row 1 To T Row 1 +H Row 1 The time period is determined according to the 24-hour temperature change rule, and the time period of the lowest temperature before sunrise, T Row 2 To T Row 2 +H Row 2 The time period is determined according to a 24-hour air temperature change rule, and the highest air temperature time period with relatively high evaporation rate is determined under the same other conditions.
7. The device and the method for dehumidifying, dehydrating and preventing condensation of the fireproof and explosion-proof box according to claim 5 are characterized in that: the anti-condensation exhaust procedure is carried out according to the following steps,
step one: reading the current relative humidity and temperature value RH of the internal temperature and humidity module A ，RH A Expressed as a percentage;
step two: if RH A When the data is more than or equal to 98% (the data can be adjusted according to the actual requirement of the use site), starting the fan to exhaust and starting timing, entering the next step, otherwise returning to the step one;
step three: reading in timing time;
step four: whether the timing time reaches the exhaust working time T Row of rows If not, returning to the third step;
step five: closing the fan, resetting the timer, and starting the timer;
step six: standby, wait time reaches several times evaporation waiting time p×T Steaming The p value is determined according to the actual situation of the use site;
step seven: and (5) resetting the timer and returning to the step one.
8. The device and the method for dehumidifying, dehydrating and preventing condensation of the fireproof and explosion-proof box according to claim 5 are characterized in that: the dehumidification and exhaust process is performed according to the following steps,
step one: reading the current relative humidity and temperature value RH of the internal temperature and humidity module A 、t A And the current relative humidity and the temperature value RH of the external temperature and humidity module B 、t B ，RH A And RH (relative humidity) B Expressed as a percentage;
step two: if t A -t B Is equal to or less than Δt, and RH A -RH B If the temperature is more than or equal to delta RH, starting the fan to exhaust and starting timing, jumping to the step six, otherwise, entering the next step;
step three: calculating saturated vapor pressure difference VPD according to the current temperature and humidity values, and using VPD A Indicating the value of VPD in the box, VPD B Indicating the value of VPD outside the box, when VPD B -VPD A When the pressure is not less than delta VPD, starting the fan to exhaust and starting timing, jumping to the step six, otherwise, entering the next step;
step four: according to the current relative humidity and temperature values measured by the internal temperature and humidity module and the external temperature and humidity module, calculating the absolute humidity values of the inside and the outside of the box, when the absolute humidity of the inside of the box is larger than the absolute humidity of the outside of the box, starting a fan to exhaust and starting timing, and jumping to the step six, otherwise, entering the next step;
step five: calculating the dew point value Td in the current box A And dew point value Td of the environment outside the box B When Td is A -Td B When the temperature is more than or equal to delta Td, starting the fan to exhaust and starting timing, otherwise, returning to the step one;
step six: reading in timing time;
step seven: whether the timing time reaches the exhaust working time T Row of rows If not, returning to the step five;
step eight: closing the fan, resetting the timer, and starting the timer;
step nine: standby, wait time reaches evaporation waiting time T Steaming ；
Step ten: and (5) resetting the timer and returning to the step one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310231933.0A CN116437599A (en) | 2023-03-13 | 2023-03-13 | Fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device and method |
| PCT/CN2023/120676 WO2024008218A1 (en) | 2023-03-13 | 2023-09-22 | Fireproof and explosion-proof device and method for box dehumidification, water removal and condensation prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310231933.0A CN116437599A (en) | 2023-03-13 | 2023-03-13 | Fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116437599A true CN116437599A (en) | 2023-07-14 |
Family
ID=87088070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310231933.0A Pending CN116437599A (en) | 2023-03-13 | 2023-03-13 | Fireproof and explosion-proof box dehumidifying, dewatering and condensation preventing device and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116437599A (en) |
| WO (1) | WO2024008218A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4906493B2 (en) * | 2006-12-19 | 2012-03-28 | 株式会社長府製作所 | Desiccant air conditioner and its dew protection device |
| CN104752970B (en) * | 2012-10-15 | 2017-11-21 | 国网江苏省电力公司常州供电公司 | Dehumidification method of anti-condensation automatic electric cabinet dehumidifier |
| CN109451704A (en) * | 2018-11-05 | 2019-03-08 | 辽宁中天智控技术有限公司 | A kind of cabinet dewing-proof method and its device |
| CN110336188B (en) * | 2019-06-17 | 2021-09-03 | 国网上海市电力公司 | Moisture-proof dehumidification method for 10 kV box transformer substation |
| CN112886398A (en) * | 2021-03-02 | 2021-06-01 | 王翔宇 | External looped netowrk cabinet dehumidification condensation prevention device |
-
2023
- 2023-03-13 CN CN202310231933.0A patent/CN116437599A/en active Pending
- 2023-09-22 WO PCT/CN2023/120676 patent/WO2024008218A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2024008218A1 (en) | 2024-01-11 |
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