Passive humidifying method for cultural relic storage

Abstract

The invention relates to a passive humidifying method for cultural relic storage, which is based on an airtight storehouse, a storehouse main body is of a sealed structure, and at least one temperature and humidity sensor is fixedly arranged on the inner wall of the storehouse; the humidity adjusting plate is used for maintaining the environment humidity in the storehouse; the ratio of the laying volume of the humidity adjusting plate to the volume of the storehouse is 1: 500 to 1: 600; paving on the side wall or the top of the storehouse; the passive humidity adjusting method for cultural relic storage comprises the steps that an airtight door is closed, and a first humidity adjusting capacity observation period is entered to observe whether the humidity value in an airtight storehouse meets the expectation or not; opening an air-tight door, and entering a storehouse to observe whether the humidity adjusting plate is dewed, mildewed or deformed; the airtight door is closed, and a second humidity adjusting capacity observation period is entered to observe whether the humidity value in the airtight storehouse meets the expectation or not; an airtight door is opened, and a relative humidity replacement period is carried out through natural gas replacement or a humidity adjusting material; closing the airtight door after the humidity meets a preset value; in the cultural relic collection storage period, the humidity fluctuation interval in the airtight storehouse is 30%-60%.

Description

Technical Field

[0001] The invention relates to the technical field of cultural relic preservation and airtight environment gas conditioning, and in particular to a passive humidity control method for cultural relic storage. Background Art

[0002] The storage and protection of cultural relics have always been highly valued. For the safe storage of a large number of cultural relics, ancient books and other collections, the humidity of the environment is a particularly important issue.

[0003] Different cultural relics have different requirements for environmental humidity. For example, different categories of collections such as ancient books, ancient bamboo and wooden objects have obviously different requirements for environmental humidity. This difference requires not only that the humidity value be maintained within a reasonable range, but also that the reasonable humidity value be maintained for a sufficiently long time. In the prior art, one way is to maintain the humidity of the storage environment within a reasonable range through active humidity control. However, since active humidity control requires the support of large-scale equipment, its relatively high procurement cost and operating cost make it difficult to promote and apply it. Another way is to passively adjust the humidity by placing humidity-controlling materials. The maintenance time of traditional warehouses is relatively short, and personnel are required to frequently replace humidity-controlling materials, which frequently affects the storage environment.

[0004] Therefore, how to provide a more economical, convenient and stable storage environment for a large number of collections is a difficult problem in research in this field. Summary of the invention

[0005] In view of the technical problems existing in the prior art, the present invention proposes a passive humidity control method for cultural relics storage, based on an airtight storehouse, wherein the storehouse body is a sealed structure, the storehouse body includes two first side walls arranged in the length direction and two second side walls in the width direction; the door frame of the airtight door is fixedly arranged on the first side wall; when the airtight door is closed, the air change rate of the airtight storehouse is not more than 1d -1; The temperature and humidity sensors are used to monitor the temperature and humidity changes in the warehouse in real time, wherein at least one temperature and humidity sensor is fixedly installed on the wall in the warehouse; if multiple temperature and humidity sensors are arranged at different positions in the warehouse, the distance between the sensors should not be less than 5m; The humidification plate maintains the ambient humidity in the warehouse. The ratio of the laying volume of the humidification plate to the volume of the warehouse is 1:500 to 1:600, and it is laid on the side wall or top of the warehouse; The passive humidification method for cultural relics storage includes: closing the airtight door and entering the first humidification capacity observation period to observe whether the humidity value in the airtight warehouse meets the expectations; opening the airtight door and entering the warehouse to observe whether the humidification plate is condensed, moldy or deformed; closing the airtight door The door is opened to enter the second humidity control capacity observation period to observe whether the humidity value in the airtight storehouse meets expectations; the airtight door is opened to carry out the relative humidity replacement period by natural gas replacement or humidity regulating materials; the airtight door is closed after the humidity meets the preset value; if the humidity value in the airtight storehouse during the humidity control observation period after the replacement meets expectations, the airtight door is opened to place the cultural relics collection; if the humidity value in the airtight storehouse during the humidity control observation period does not meet expectations after the replacement, the relative humidity replacement method of the second humidity control capacity observation period is used until the humidity in the airtight storehouse meets expectations, and the airtight door is opened to place the cultural relics collection; the airtight door is closed to enter the storage period of the cultural relics collection, and the humidity fluctuation range in the airtight storehouse is 30% to 60%.

[0006] Optionally, the second humidity adjustment capability observation period is shorter than the first humidity adjustment capability observation period, and the relative humidity replacement period is longer than the first humidity adjustment capability observation period.

[0007] Optionally, the first humidity regulating capacity observation period is 5 to 7 days, the second humidity regulating capacity observation period is 3 to 5 days, and the relative humidity replacement period is 10 to 30 days.

[0008] Optionally, the first humidification plate is laid extending from a vertical edge close to the side wall toward another edge in a direction parallel to the wall.

[0009] Optionally, the warehouse has a length of 3m-50m, a width of 1m-40m, and a height of 2m-5m.

[0010] Optionally, the length of the warehouse is 5.5m, the width of the warehouse is 1m, the height of the warehouse is 3.2m, and the ratio of the volume of the humidification plate to the volume of the warehouse space is 1:550.

[0011] Optionally, the warehouse ventilation rate is 0.5d -1 , and the humidity difference between inside and outside the warehouse is 20%, then the humidity in the warehouse is maintained at a fluctuation range of 30% to 60% for at least 52 days.

[0012] Optionally, the warehouse ventilation rate is 0.05d -1, and the humidity difference between inside and outside the warehouse is 20%, and the ambient temperature is 10-30℃, then the humidity in the warehouse is maintained at a fluctuation range of 30% to 60% for at least 190 days.

[0013] Optionally, the humidity control plate is made of inorganic minerals and polymer humidity control liquid, the size of the humidity control plate is 60*60cm, 60*30cm or customized according to demand, and the thickness of the humidity control plate is 3-10mm.

[0014] Optionally, the airtight door structure includes a translational type, a single-leaf swing-open type or a double-leaf swing-open type.

[0015] The solution of this application is to reasonably arrange humidity-control plates in the airtight enclosure, and through passive humidity control, keep the environment in the airtight enclosure stable for a long time. This solution can meet the humidity requirements of different collections, and can not only maintain the required humidity value within a reasonable range, but also maintain the reasonable humidity value for a sufficiently long time. Compared with active humidity control, this application does not require the use of humidity control equipment, and can also maintain the humidity of the storage environment within a reasonable range, so it does not require high procurement costs, nor does it involve subsequent equipment maintenance, equipment electricity and other operating expenses, which greatly reduces the cost of cultural relics storage. Compared with the traditional passive humidity control method by placing humidity control materials, this application does not require personnel to frequently replace humidity control plates, which will not frequently affect the storage environment, and can maintain the humidity in the enclosure environment within a reasonable range for a long time.

[0016] By designing the warehouse as a sealed structure, the impact of the external environment on the humidity inside the warehouse is significantly reduced, thus providing a stable storage environment. The use of airtight doors ensures that the warehouse can effectively isolate the interference of external gas and humidity when opening and closing. The ventilation rate is set to no more than 1d-1 to ensure that the humidity and temperature in the warehouse remain within a stable range, reduce environmental fluctuations caused by frequent ventilation, and thus protect cultural relics from damage caused by environmental changes. The real-time monitoring function of the temperature and humidity sensor enables the warehouse manager to understand environmental changes at any time and take corresponding measures in time. The layout of multiple sensors ensures the accuracy and comprehensiveness of the data and can effectively reflect the humidity conditions of various areas in the warehouse. The design of the sensor spacing of not less than 5m avoids the error of local humidity measurement and ensures the effectiveness of overall humidity control. This layout method can also better reflect the uniformity of humidity in the warehouse and reduce the problem of excessive or low local humidity. The ratio of the humidification plate to the warehouse volume is designed to be between 1:500 and 1:600 ​​to ensure the effectiveness of the humidification plate and provide sufficient moisture regulation capacity. At the same time, the humidity control board is laid on the side wall or the top, so that the humidity can be evenly diffused to every corner of the warehouse, improving the efficiency and effect of humidity control. Combining the above designs, the whole method can not only effectively control the humidity in the warehouse, but also reduce the damage of cultural relics such as mildew and cracking caused by humidity fluctuations, significantly improve the preservation quality of cultural relics, and extend the life of cultural relics.

[0017] Therefore, the present application is a more economical, convenient and stable method for storing cultural relics. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 is a flow chart of a passive humidity control method for cultural relics storage according to an embodiment of the present invention;

[0020] Figure 2 is a structural diagram of a warehouse according to an embodiment of the present invention;

[0021] Figure 3 is a numerical diagram of temperature and humidity monitoring in a warehouse according to an embodiment of the present invention;

[0022] Figure 4 is a temperature and humidity monitoring value diagram of each temperature and humidity sensor according to an embodiment of the present invention;

[0023] Figure 5 is a structural diagram of a warehouse according to another embodiment of the present invention;

[0024] Figure 6 2 is a temperature and humidity monitoring value diagram of each temperature and humidity sensor according to another embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the following detailed description, reference may be made to the various specification drawings that are part of the present application and are used to illustrate specific embodiments of the present application. In the accompanying drawings, similar reference numerals describe substantially similar components in different figures. The various specific embodiments of the present application are described below in sufficient detail so that a person of ordinary skill in the art with relevant knowledge and skills in the art can implement the technical solutions of the present application. It should be understood that other embodiments may also be used or structural, logical or electrical changes may be made to the embodiments of the present application.

[0027] The present invention proposes a passive humidity control method for storing cultural relics, based on an airtight storehouse, wherein the storehouse body is a sealed structure, the storehouse body includes two first side walls arranged in the length direction and two second side walls in the width direction; the door frame of the airtight door is fixedly arranged on the first side wall; when the airtight door is closed, the air change rate of the airtight storehouse is not more than 1d -1 ; The temperature and humidity sensors are used to monitor the temperature and humidity changes in the warehouse in real time, wherein at least one temperature and humidity sensor is fixedly installed on the wall in the warehouse; if multiple temperature and humidity sensors are arranged at different positions in the warehouse, the distance between sensors shall not be less than 5m; The humidification plate maintains the ambient humidity in the warehouse. The ratio of the laying volume of the humidification plate to the volume of the warehouse is 1:500 to 1:600, and it is laid on the side wall or top of the warehouse.

[0028] like Figure 1 As shown, passive humidity control methods for cultural relics storage include:

[0029] Step S11: close the airtight door and enter the first humidity control capacity observation period to observe whether the humidity value in the airtight storehouse meets expectations.

[0030] Step S12: Open the airtight door and enter the warehouse to observe whether the humidity control plate is condensed, moldy or deformed.

[0031] Step S13: close the airtight door and enter the second humidity control capacity observation period to observe whether the humidity value in the airtight storehouse meets expectations.

[0032] Step S14: Open the airtight door and perform a relative humidity replacement period by natural gas replacement or humidity regulating materials.

[0033] Step S15: closing the airtight door after the humidity meets the preset value.

[0034] Step S16: If the humidity value in the airtight storehouse during the humidity adjustment observation period after replacement meets expectations, the airtight door is opened to place the cultural relics collection.

[0035] Step S17: If after replacement, the humidity value in the airtight storehouse during the humidity adjustment observation period does not meet expectations, then according to the relative humidity replacement method of the second humidity adjustment capacity observation period, the airtight door is opened to place the cultural relics collections until the humidity in the airtight storehouse meets expectations.

[0036] Step S18: The airtight door is closed to enter the storage period of the cultural relics collection. The humidity fluctuation range in the airtight storehouse is 30% to 60%.

[0037] In the present application, the environmental humidity in the airtight enclosure is adjusted to a reasonable range and maintained for a long time by the reasonable configuration of the humidity-adjusting plate and the use of the passive humidity-adjusting method. In this process, by setting different observation periods and replacement periods, the environmental humidity in the airtight enclosure and the state of the humidity-adjusting plate are adjusted to the expected state. Then, the cultural relics to be stored are placed therein, and long-term storage of cultural relics can be achieved. By designing the warehouse as a sealed structure, the influence of the external environment on the humidity inside the warehouse is significantly reduced, thereby providing a stable storage environment. The use of airtight doors ensures that the warehouse can effectively isolate the interference of external gas and humidity when opening and closing. The ratio of the humidity-adjusting plate to the volume of the warehouse is designed to be between 1:500 and 1:600, ensuring the effectiveness of the humidity-adjusting plate and providing sufficient moisture regulation capacity. At the same time, the humidity-adjusting plate is laid on the side wall or the top, so that the humidity can be evenly diffused to every corner of the warehouse, improving the efficiency and effect of humidity control. Combining the above designs, the entire method can not only effectively control the humidity in the warehouse, but also reduce the damage to cultural relics such as mildew and cracking caused by humidity fluctuations, significantly improving the preservation quality of cultural relics and extending their lifespan.

[0038] In some embodiments, the second humidity adjustment capability observation period is shorter than the first humidity adjustment capability observation period, and the relative humidity replacement period is longer than the first humidity adjustment capability observation period.

[0039] Shortening the observation period of the second humidity control capacity improves the response speed to humidity changes, allowing cultural relics to be adjusted in the optimal environment in a timely manner to ensure that storage conditions meet the requirements.

[0040] In some embodiments, the first humidity regulating capacity observation period is 5 to 7 days, the second humidity regulating capacity observation period is 3 to 5 days, and the relative humidity replacement period is 10 to 30 days.

[0041] The length of different observation periods is specified, which helps to make reasonable time arrangements in practical applications and improves the operability and efficiency of the method.

[0042] In some embodiments, the first humidifying plate is laid extending from a vertical edge close to a side wall toward another edge in a direction parallel to the wall.

[0043] The laying design of the humidity control board ensures uniform humidity distribution, further improves the humidity control effect and reduces the risk of excessive local humidity.

[0044] In some embodiments, the warehouse has a length of 3m-50m, a width of 1m-40m, and a height of 2m-5m.

[0045] It provides flexible options for warehouse size, which can adapt to the storage needs of cultural relics of different scales and meet diverse application scenarios.

[0046] In some embodiments, the length of the warehouse is 5.5 m, the width of the warehouse is 1 m, the height of the warehouse is 3.2 m, and the ratio of the volume of the humidification plate to the volume of the warehouse space is 1:550.

[0047] The standard dimensions of the warehouse and the proportion of humidifying board laying are given specifically, which helps to achieve the best humidity control effect during design and construction and improves practicality.

[0048] In some embodiments, the air exchange rate of the warehouse is 0.5d -1 , and the humidity difference between inside and outside the warehouse is 20%, then the humidity in the warehouse is maintained at a fluctuation range of 30% to 60% for at least 52 days.

[0049] Under specific ventilation rate and humidity difference, it provides long-term humidity maintenance capability, ensuring that cultural relics remain within a safe humidity range for a longer period of time, reducing potential damage.

[0050] In some embodiments, the air exchange rate of the warehouse is 0.05d -1 , and the humidity difference between inside and outside the warehouse is 20%, and the ambient temperature is 10-30℃, then the humidity in the warehouse is maintained at a fluctuation range of 30% to 60% for at least 190 days.

[0051] The humidity control capability under low ventilation rate conditions has been further expanded to ensure the safe storage of cultural relics under extreme environmental conditions and to have good long-term stability.

[0052] In some embodiments, the humidity control plate is made of inorganic minerals and polymer humidity control liquid, the size of the humidity control plate is 60*60cm, 60*30cm or customized according to demand, and the thickness of the humidity control plate is 3-10mm.

[0053] The material and size of the humidification plate can be customized, which improves the flexibility and adaptability of the method and can be optimized for different cultural relic materials and storage requirements.

[0054] In some embodiments, the airtight door structure includes a translational type, a single-leaf swing-open type, or a double-leaf swing-open type.

[0055] The application scheme of the present invention has wide applicability and improves the flexibility and adaptability of the method. Different types of airtight doors can also meet the use requirements of the present invention and can cope with a variety of use environments.

[0056] In some embodiments, the cultural relics collection includes at least one of stoneware, pottery, metalware, jade, porcelain, lacquerware, handicrafts, calligraphy and painting, and documents.

[0057] The application scenarios of this application are wide, covering various types of cultural relics, ensuring the wide applicability of the humidity control method, and being able to effectively protect cultural relics of different materials and improve their reliability of long-term preservation.

[0058] Below Figure 2 As a specific example, the scheme and effect of the present application are further explained.

[0059] like Figure 2 In this embodiment, the airtight storeroom involved is a storeroom with a ventilation rate of less than 0.05d -1 The high airtight warehouse is 5.5m long, 1m wide and 3.2m high. The warehouse body includes two first side walls 11 arranged in the length direction and two second side walls 12 in the width direction. The door frame of the airtight door 13 is fixedly arranged on the first side wall 11. At least one temperature and humidity sensor 21 is fixedly arranged on the wall inside the warehouse.

[0060] In this embodiment, the humidity control plate 31 is fully spread on the two second side walls 12 of the airtight storehouse. Then the area of ​​the two second side walls is 3.2*1*2=6.4㎡. If the humidity control range of the airtight storehouse environment is 40% to 60%, then the moisture absorption and release capacity of the humidity control plate in this range is 120g / ㎡, and the theoretical moisture absorption and release capacity of 6.4㎡ is 768g.

[0061] Under absolutely closed conditions, the total volume of the warehouse is: 5.5*1*3.2=17.6m 3 At 100% RH, each cubic meter can hold at most 23g of water vapor (room temperature). Then, the amount of water vapor in the warehouse is 17.6*23=404.8g. Therefore, the humidity control plate 31 used in this embodiment is sufficient to balance any initial humidity in the warehouse to the target humidity.

[0062] In this embodiment, the size of the humidity control plate used is 600*600*5mm. For the convenience of laying and use, 10 600*600mm humidity control plates and 10 600*300mm humidity control plates will be used, and the humidity control plates 31 will be fixed on the two second side walls 12 by bonding. In one embodiment, the 600*300mm humidity control plate can be laid up and down along the position close to the first side wall 11 on one side, and the 600*600mm humidity control plate can be laid up and down along the position close to the first side wall 11 on the other side. The surface area used in the warehouse is 35㎡. From the perspective of laying area, the ratio of laying area to the surface area of ​​the warehouse is 1:5.47, and from the perspective of occupied space volume, the ratio of the volume of the humidity control plate to the volume of the warehouse is: 1:550.

[0063] In this embodiment, the air exchange rate of the high airtight warehouse can reach 0.05d -1 , then the longest time that one direction can be maintained is = (120*5.76) / (4.6*15.84) / 0.05 = 190 days.

[0064] In addition, three temperature and humidity sensors 21 are also shown in the figure. In some embodiments, when the temperature and humidity environment in the airtight enclosure is stable, only one is placed inside. In order to verify the reliability of the scheme, a total of 6 temperature and humidity sensors are set (only 3 are shown in the figure). The experimental process is described in detail below in combination with the actual collected data. Figure 3 The temperature and humidity of the experimental process are comprehensively shown in the figure. Figure 4 The data collected by each of the six sensors are shown in FIG.

[0065] In this experiment:

[0066] (1) 2023 / 6 / 13 13:30-2023 / 6 / 14 14:00

[0067] This stage is the empty storage collection time of the high airtight warehouse (airtight door closed state), which is used for pre-experiment adjustment tests for subsequent experiments.

[0068] (2) 2023 / 6 / 14 14:00-2023 / 6 / 14 15:00

[0069] This stage is the time for installing the humidifying board, which is installed using glass glue and the airtight door is closed.

[0070] (3) 2023 / 6 / 14 15:00-2023 / 6 / 19 8:30

[0071] This stage should have been an observation period for humidity control capacity, and at 8:30 on 2023 / 6 / 19, it was discovered that the opening of a PVC pipe with a diameter of about 3 cm below the warehouse on the left side of the warehouse was not sealed.

[0072] (4) 2023 / 6 / 19 8:30-2023 / 6 / 19 9:00

[0073] During this time, the PVC pipe opening was sealed.

[0074] (5) 2023 / 6 / 19 9:00-2023 / 6 / 21 10:30

[0075] This is the first humidity control capacity observation period, and the warehouse was opened at 10:30 on 2023 / 6 / 21 to observe whether the humidity control plate had condensation, mold or deformation. After observation, it was found that the above situation was not found, but due to the low relative humidity outside, the humidity in the warehouse dropped relatively after the door was closed.

[0076] (6) 2023 / 6 / 21 10:30-2023 / 6 / 25 8:30

[0077] This is the second humidity control capacity observation period.

[0078] (7) 2023 / 6 / 25 8:30-2023 / 6 / 25 13:00

[0079] The warehouse door is opened for the relative humidity replacement period inside and outside. When the relative humidity is about 53%, the airtight door is closed.

[0080] (8) 2023 / 6 / 25 13:00-2023 / 6 / 29 12:00

[0081] This is the humidity adjustment observation period after replacement.

[0082] (9) 2023 / 6 / 29 12:00-2023 / 6 / 29 17:30

[0083] The warehouse door is opened, and the relative humidity inside and outside is replaced. After the replacement, the relative humidity drops from 52.1% to 40.7%.

[0084] (10) 2023 / 6 / 30 8:30-2023 / 7 / 18 14:30

[0085] For the third humidity control capacity observation period, after long-term monitoring of relative humidity, it was found that the humidity in the warehouse fluctuated within a relatively high value range, which was too far from the preset 55%RH (±5%). To improve this situation, we placed a new humidity control board in the warehouse.

[0086] (11) 2023 / 7 / 18 14:30-2023 / 7 / 25 15:30

[0087] After placing the new humidity control panel, the average humidity in the warehouse stabilized below 60% RH, and the valley value was close to the preset 55% RH.

[0088] (12) 2023 / 7 / 25 15:30-2023 / 8 / 9 10:00

[0089] After taking out the humidity control plate, the humidity in the warehouse rebounded slightly, with a small difference from the preset humidity of 55% RH.

[0090] (13) 2023 / 8 / 9 10:00-2023 / 8 / 9 15:15

[0091] According to observations, the humidity fluctuation in the warehouse is within the reasonable deviation of the humidity control plate. In order to further refine the humidity control capacity of the warehouse and understand the uniformity of humidity control in the warehouse, we conducted humidity control accuracy tests on the 6 humidity control plates in the warehouse. After the test, 3 sets of high-precision temperature and humidity sensors were added to the warehouse. The 3 sets of temperature and humidity sensors are "Left-New", "Left 2" and "Middle-New". Among them, "Left-New" and "Middle-New" are placed 30cm above the original temperature and humidity detection sensors in the warehouse; "Left 2" is placed at the midpoint.

[0092] (14) 2023 / 8 / 9 15:15-2023 / 8 / 18 14:00

[0093] According to the data collected in the previous stage, a humidity control plate was placed in the warehouse again. The adjusted peak was about 56 and the trough was about 51, which was close to the preset value.

[0094] (15) 2023 / 8 / 18 14:00-2023 / 12 / 28 14:20

[0095] After the humidity control plate was taken out, the fluctuation range was further reduced, and the weight of the humidity control plate after humidity control was 3.725kg. During this stage, the external temperature changes were more obvious, and the humidity inside the warehouse was affected by the temperature fluctuations, with a slight upward trend, but it was generally maintained well.

[0096] (16) 2023 / 12 / 28 14:20-Last

[0097] Combination Figure 3 and Figure 4 The data results show that:

[0098] Take the temperature and humidity data collected by the temperature and humidity sensor on the "left" as an example: as of 2023 / 8 / 23, the humidity inside the high-airtight warehouse has gradually decreased, which can be divided into four stages.

[0099] The first stage was from June 13 to June 25. This stage was the initial stage of the experiment, and the humidity in the warehouse could reach up to 80% RH. In response to this abnormal phenomenon, we tested the air tightness of the warehouse. By observing the inside and outside of the warehouse, the air inlet and outlet of the warehouse were sealed, and the air tightness test was performed using the half-pressure drop method, and it was found that there was a certain amount of air leakage.

[0100] The second phase was from June 25 to July 18. To improve the humidity inside the warehouse and adjust the temperature and humidity environment inside and outside the warehouse, two ventilation operations were carried out inside and outside the warehouse (June 25 and June 29). The humidity inside the warehouse dropped significantly, but the difference with the preset humidity gradually became smaller. The data showed that the humidity control board has the ability to balance humidity for a long time.

[0101] The third stage was from July 18 to July 24. After the humidity control board was put into the warehouse, the humidity in the warehouse steadily dropped to about 57%RH, which was very close to the preset humidity. After two more days of observation, the humidity fluctuation in the warehouse was within ±5%RH, which was in line with the experimental expectations. The experiment is currently going smoothly.

[0102] The newly added humidity control plate is placed at the bottom middle of the warehouse, and the temperature and humidity sensor on the left is placed 300mm away from the left wall and 1600mm from the bottom. It can be seen that this humidity control plate can achieve uniform humidity control in the warehouse.

[0103] In the fourth phase, from July 24 to August 19, experiments were conducted on the uniformity of humidity in the warehouse. According to the accuracy test of the temperature and humidity sensors, the temperature and humidity detection sensor 1 named "left" has an error of about -3%, and the temperature and humidity detection sensor 2 named "middle" has an error of about -2%. The errors of the newly added temperature and humidity detection sensors 4, 5, and 6 are all within 1%. Based on the previous stage, the humidity fluctuation in the warehouse in this stage fluctuates within ±5%RH. By comparing the data of temperature and humidity detection sensors 1, 2, 4, 5, and 6 horizontally, it can be seen that the humidity in the warehouse is uniform and the layout of the humidity control plate is reasonable.

[0104]

[0105] Table 1

[0106] The fifth stage is the maintenance stage from 8 / 19 to now. In this stage, the warehouse has not been disturbed. As can be seen from Table 1, although the humidity inside the warehouse has slightly increased due to the continuous decrease in the outside temperature, the humidity control ability has no effect and can basically be maintained at 52%±3%RH.

[0107] Among them, the reasons for the errors in the first 70 days or so are analyzed as follows:

[0108] Through the observation of the data in this stage, the following reasonable inferences are made regarding the excessively high humidity in the first stage:

[0109] 1. If the air tightness of the warehouse is poor, the internal atmosphere is affected by the outside world to a certain extent. Due to the low humidity outside, the internal humidity control board continues to work, and the released moisture cannot be discharged from the warehouse in time, causing the humidity in the warehouse to surge;

[0110] 2. The humidity control board was placed for a long time and was not tightly sealed, so its humidity control memory had been modified by the environment, resulting in the humidity being stable at around 75% RH in the early stage.

[0111] Therefore, it can be concluded that under the condition that the airtightness is guaranteed to a certain extent, the method involved in the present application can maintain the humidity in the airtight enclosure within a preset range for a long time.

[0112] like Figure 5 As shown, it is another embodiment of the present application, wherein the air tightness of the warehouse is 0.5d -1 , the humidity-conditioning plate is set on the top of the warehouse.

[0113] In this embodiment, the airtight door 13 is a double-leaf swing-open type. Since the humidity control plate is set at the top, it can be installed by bonding or by keel. Among them, for keel installation, if the humidity control plate is installed on the top, it is necessary to use a T-shaped ceiling keel to build it. The main keel has good stability, overall flatness, and a height error of 2mm. The keel installation requires the use of special connectors to firmly connect with the vertical keel, and install in sequence, especially from bottom to top. The keel installation has the advantages of high structural strength and good flatness.

[0114] In this embodiment, the top area is 1.98㎡. If the humidity control range is 40% to 60% RH, the theoretical moisture absorption and desorption capacity of the humidity regulating plate in this range is 120g / ㎡, and the theoretical moisture absorption and desorption capacity of 1.98㎡ is 237.6g.

[0115] If the warehouse is under absolutely closed conditions, the total volume is 5.24m 3 (Content volume), at 100% RH, each cubic meter can hold a maximum of 23g of water vapor (room temperature), 5.24*23=120.52g, so the humidifying plate used here is sufficient to balance any initial humidity in the warehouse to the target humidity.

[0116] If the ventilation rate is 0.5d -1 (Ventilate once every 2 days), the humidity outside the warehouse fluctuates between 30% and 80%. According to the 20% humidity difference between inside and outside, the amount of water vapor that the board needs to absorb or release is 23*20%=4.6g, so the longest time that can be maintained in one direction is 120 / 4.6 / 0.5=52 days.

[0117] In another embodiment, if the ventilation rate can reach 1d according to this scheme -1 , then the longest time that can be maintained in one direction is = (120*1.98) / (4.6*5.24) / 1 = 10 days. Among them, the ratio of the laying area to the space volume in this embodiment is = 1:2.65. The number of humidity control plates is 4 (600*600mm) and 3 (60*30mm).

[0118] Figure 6 This is the experimental result of the above scheme. It is not difficult to see from the data that this scheme can maintain a certain stability in the early stage of the experiment, but in the middle and late stages of the experiment, the humidity fluctuates greatly and cannot guarantee the long-term preservation of the cultural relics.

[0119] In some embodiments, the humidity control method and airtight warehouse involved in this scheme are arranged in another constant temperature and humidity system, or a constant temperature and humidity system is installed in a passive humidity control warehouse. The temperature adjustment range of the constant temperature and humidity system is: 16°C to room temperature, which is selected according to needs. The temperature control accuracy of the constant temperature and humidity system is: ≤±2°C. The temperature daily difference of the constant temperature and humidity system is: ≤2°C. The humidity adjustment range of the constant temperature and humidity system is: 10%RH~65%RH (20±2°C); the humidity control accuracy of the constant temperature and humidity system is: ≤±5%RH; the humidity daily difference of the constant temperature and humidity system is: ≤5%RH.

[0120] Among them, the constant temperature and humidity system can adjust the external environment and internal environment of the airtight storehouse involved in this application to an ideal state. At this time, the airtight storehouse can be closed and the constant temperature and humidity system can be directly turned off, so that the humidity environment in the airtight storehouse can also remain stable for a long time.

[0121] The constant temperature and humidity system can quickly adjust the temperature and humidity environment in the airtight warehouse to an ideal state without manual intervention. In some embodiments, after the airtight warehouse is closed, if fluctuations occur after a period of stability, the constant temperature and humidity system can be restarted to quickly adjust the temperature and humidity environment in the airtight warehouse to ensure the stability of the temperature and humidity environment in the warehouse.

[0122] The solution of this application is to reasonably arrange humidity-control plates in the airtight enclosure, and through passive humidity control, keep the environment in the airtight enclosure stable for a long time. This solution can meet the humidity requirements of different collections, and can not only maintain the required humidity value within a reasonable range, but also maintain the reasonable humidity value for a sufficiently long time. Compared with active humidity control, this application does not require the use of humidity control equipment, and can also maintain the humidity of the storage environment within a reasonable range, so it does not require high procurement costs, nor does it involve subsequent equipment maintenance, equipment electricity and other operating expenses, which greatly reduces the cost of cultural relics storage. Compared with the traditional passive humidity control method by adding humidity control agents, this application does not require personnel to frequently replace humidity control agents, which will not frequently affect the storage environment, and can maintain the humidity in the enclosure environment within a reasonable range for a long time.

[0123] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention.

Claims

1. A passive humidity control method for cultural relics storage, based on an airtight storehouse, wherein: The main body of the warehouse is a sealed structure, and the main body of the warehouse includes two first side walls arranged in the length direction and two second side walls in the width direction; the door frame of the airtight door is fixedly arranged on the first side wall; when the airtight door is closed, the air change rate of the airtight warehouse is not more than 1d -1 ; The temperature and humidity sensors are used to monitor the temperature and humidity changes in the warehouse in real time, wherein at least one temperature and humidity sensor is fixedly installed on the wall in the warehouse; if multiple temperature and humidity sensors are arranged at different positions in the warehouse, the distance between the sensors should not be less than 5m; the humidity control plate maintains the ambient humidity in the warehouse. The ratio of the laying volume of the humidity control plate to the volume of the warehouse is 1:500 to 1:600, and it is laid on the side wall or top of the warehouse; The passive humidity control method for cultural relics storage comprises: The airtight door is closed, and the first humidity control capacity observation period is entered to observe whether the humidity value in the airtight storehouse meets expectations; Open the airtight door and enter the warehouse to observe whether the humidity control plate is condensed, moldy or deformed; The airtight door is closed, and the second humidity control capacity observation period is entered to observe whether the humidity value in the airtight storehouse meets expectations; Open the airtight door and perform a relative humidity replacement period by natural gas replacement or humidity regulating materials; After the humidity meets the preset value, the airtight door is closed; If the humidity value in the airtight storeroom meets expectations during the humidity adjustment observation period after replacement, the airtight door will be opened to place the cultural relics collection; If the humidity value in the airtight storehouse does not meet expectations during the humidity adjustment observation period after replacement, the relative humidity replacement method of the second humidity adjustment capacity observation period shall be used until the humidity in the airtight storehouse meets expectations, and the airtight door shall be opened to place the cultural relics collection; The airtight door is closed to enter the storage period of the cultural relics collection, and the humidity fluctuation range in the airtight storehouse is 30% to 60%.

2. The passive humidity control method for cultural relics storage according to claim 1, wherein: The second humidity control capability observation period is shorter than the first humidity control capability observation period, and the relative humidity replacement period is longer than the first humidity control capability observation period.

3. According to the passive humidity control method for storing cultural relics according to claim 2, the first humidity control ability observation period is 5 to 7 days, the second humidity control ability observation period is 3 to 5 days, and the relative humidity replacement period is 10 to 30 days.

4. The passive humidity control method for cultural relics storage according to claim 1, wherein: The first humidity-conditioning plate is laid extending from a vertical edge close to the side wall toward the other edge in a direction parallel to the wall.

5. According to the passive humidity control method for storing cultural relics as described in claim 1, the length of the storehouse is 3m-50m, the width is 1m-40m, and the height is 2m-5m.

6. The passive humidity control method for cultural relics storage according to claim 1, wherein: The length of the warehouse is 5.5m, the width is 1m, the height is 3.2m, and the ratio of the volume of the humidifying plate to the volume of the warehouse space is 1:

550.

7. The passive humidity control method for storing cultural relics according to claim 2, wherein the air exchange rate of the storeroom is 0.5d -1 , and the humidity difference between inside and outside the warehouse is 20%, then the humidity in the warehouse is maintained at a fluctuation range of 30% to 60% for at least 52 days.

8. The passive humidity control method for storing cultural relics according to claim 2, wherein the air exchange rate of the storeroom is 0.05d -1 , and the humidity difference between inside and outside the warehouse is 20%, and the ambient temperature is 10-30℃, then the humidity in the warehouse is maintained at a fluctuation range of 30% to 60% for at least 190 days.

9. According to the passive humidity control method for cultural relics storage as described in claim 1, the material of the humidity control plate is inorganic minerals and polymer humidity control liquid, the size of the humidity control plate is 60*60cm, 60*30cm or customized according to demand, and the thickness of the humidity control plate is 3-10mm.

10. According to the passive humidity control method for cultural relics storage according to claim 1, the airtight door structure includes a translation type, a single-leaf swing-open type or a double-leaf swing-open type.

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