Adsorbent bed monitoring method, adsorbent bed, storage medium and product

Abstract

This invention discloses an adsorption bed monitoring method, comprising the following steps: acquiring the temperature of a first heat exchange fluid flowing out of the adsorption bed, as the first heat exchange fluid outlet temperature; when the first heat exchange fluid outlet temperature reaches a first acquired temperature, determining the corresponding first time node, whereby the first time node represents the actual time node of the current stage completion. In application, a relatively stable heat exchange fluid is first introduced into the adsorption bed, with both temperature and flow rate being relatively stable. The more stable the heat exchange fluid, the more representative the determined first time node. Simultaneously, through the above method, the actual completion time of the desorption or adsorption stage can be detected, facilitating more stable and efficient operation of the adsorption bed. In summary, this adsorption bed monitoring method effectively solves the problem of poor monitoring performance in current adsorption beds. This invention also discloses an adsorption bed, a computer-readable storage medium, and a computer program product.

Description

Technical Field

[0001] This invention relates to the field of adsorption technology, and more specifically, to an adsorption bed monitoring method, an adsorption bed using the above-described adsorption bed monitoring method, a computer-readable storage medium storing the above-described adsorption bed monitoring method, and a computer program product using the above-described adsorption bed monitoring method. Background Technology

[0002] Adsorption refrigeration systems generally consist of an adsorption bed, an evaporator, and a condenser. The working principle of an adsorption refrigeration system is based on the adsorption capacity of solid adsorbents (such as zeolite, activated carbon, etc.) for certain refrigerant vapors (such as water, methanol, etc.). Heating the adsorbent causes the refrigerant in the adsorbent to desorb, and the desorbed vapor releases heat and condenses into liquid in the condenser. Cooling the adsorbent allows it to regain its adsorption capacity, and the adsorption causes the refrigerant liquid in the evaporator to evaporate. The evaporation in the evaporator absorbs heat, thus achieving refrigeration.

[0003] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art: For a single adsorption bed, the heat source fluid and cooling fluid need to be alternately introduced to alternately perform desorption and adsorption. To improve efficiency, generally, adsorption needs to begin immediately after desorption is complete, and vice versa. However, many factors affect the desorption and adsorption durations. In practical applications, it is difficult to ensure that the desorption and adsorption durations remain stable. If periodic switching is performed, sufficient time needs to be reserved to ensure that desorption and adsorption are completed, which reduces desorption efficiency. Conversely, insufficient time leads to incomplete desorption, which affects the next stage and reduces cooling efficiency. Therefore, there is a problem with the ineffective monitoring of desorption or adsorption completion time. Summary of the Invention

[0004] In view of the above, the first objective of the present invention is to provide an adsorption bed monitoring method that can effectively solve the problem of poor monitoring effect of desorption or adsorption completion. The second objective of the present invention is to provide an adsorption bed using the above-described adsorption bed monitoring method. The third objective of the present invention is to provide a computer-readable storage medium for storing the above-described adsorption bed monitoring method. The fourth objective of the present invention is to provide a computer program product using the above-described adsorption bed monitoring method.

[0005] To achieve the first objective mentioned above, the present invention provides the following technical solution:

[0006] An adsorption bed monitoring method includes the following steps:

[0007] The temperature of the first heat exchange fluid flowing out of the adsorption bed is obtained as the outlet temperature of the first heat exchange fluid.

[0008] When the outlet temperature of the first heat exchange fluid reaches the first acquisition temperature, the corresponding first time node is determined. The first time node represents the actual time node completed in the current stage.

[0009] In the aforementioned adsorption bed monitoring method, a corresponding first time node is determined, which is the current time node recorded when the outlet temperature of the first heat exchange fluid reaches the first acquisition temperature. As mentioned above, the first acquisition temperature refers to the outlet temperature when desorption or adsorption is approximately complete. Based on the temperature change trends of the adsorption and desorption stages, once the outlet reaches this temperature, it indicates that desorption or adsorption is complete, representing the actual time node of the current stage's completion. In practical applications, this time node can be used as a reference to promptly switch the current operating state. It can also be used to monitor the adsorption efficiency and / or desorption efficiency of the adsorption bed. If the first time node has passed and the expected results have not been achieved, indicating a significant delay, it suggests that the adsorption efficiency or desorption efficiency is decreasing.

[0010] In the aforementioned adsorption bed monitoring method, a relatively stable heat exchange fluid is first introduced into the adsorption bed. The heat exchange fluid exhibits relatively stable temperature and flow rate; the more stable the heat exchange fluid, the more representative the determined first time point. Simultaneously, this method allows for the detection of the actual completion time of the desorption or adsorption phases, facilitating more stable and efficient operation of the adsorption bed. In summary, this adsorption bed monitoring method effectively solves the problem of poor monitoring performance in current adsorption beds.

[0011] Some technical solutions also include:

[0012] Obtain the difference between the first time node and the first preset time node. If the difference exceeds the first preset range, output the first output result.

[0013] In some technical solutions, the temperature of the first heat exchange fluid flowing out of the adsorption bed is used as the heat exchange fluid outlet temperature, which is:

[0014] The temperature of the first heat exchange fluid flowing out of the adsorption bed is acquired in real time and used as the heat exchange fluid outlet temperature.

[0015] In some technical solutions, the step of obtaining the temperature of the first heat exchange fluid flowing out of the adsorption bed as the first heat exchange fluid outlet temperature further includes:

[0016] The first heat exchange fluid, with a temperature within a first preset temperature range and a flow rate within a first preset flow rate range, is introduced into the adsorption bed.

[0017] In some technical solutions, the step of obtaining the difference between the first time node and the first preset time node, and outputting a first output result if it exceeds a first preset range, further includes:

[0018] At the first preset time point, the flow of the first heat exchange fluid within the first preset temperature range and the flow rate within the first preset flow rate range into the adsorption bed is stopped.

[0019] In some technical solutions, after stopping the flow of desorption heat exchange fluid within a first preset temperature range and at a flow rate within a first preset flow rate range into the adsorption bed at the first preset time point, the method further includes:

[0020] The adsorption bed is fed with a second heat exchange fluid whose temperature is within a second preset temperature range and whose flow rate is within a second preset flow rate range. The first heat exchange fluid is a heat source fluid for desorption, and the second heat exchange fluid is a cooling fluid for adsorption.

[0021] The temperature of the second heat exchange fluid flowing out of the adsorption bed is obtained as the outlet temperature of the second heat exchange fluid.

[0022] When the outlet temperature of the second heat exchange fluid reaches the second acquisition temperature, the corresponding second time node is determined. The second time node represents the actual time node completed in the current stage.

[0023] Obtain the difference between the second time node and the second preset time node. If the difference exceeds the second preset range, output the second output result.

[0024] At the second preset time point, the flow of the second heat exchange fluid within the second preset temperature range and the flow rate within the second preset flow rate range into the adsorption bed is stopped.

[0025] In some technical solutions, both the first output result and the second output result include alarm information.

[0026] In some technical solutions, the first preset temperature range is within T 1y With 1.01*T 1y Between, the first preset flow range is in Q 1y With 1.01*Q 1y Between; the second preset temperature range is within T 2y With 1.01*T 2y Between, the second preset flow rate range is in Q 2y With 1.01*Q 2y Between; where T 1y Q 1y T 2y and Q 2yAll are preset values.

[0027] To achieve the second objective mentioned above, the present invention also provides an adsorption bed, comprising a control valve, an adsorption chamber containing adsorbent, and a heat exchange channel passing through the adsorption chamber and capable of exchanging heat with the adsorbent. The control valve is used to switch the heat exchange fluid flowing through the heat exchange channel for desorption and adsorption respectively. The invention further includes a controller, and a first temperature sensor is provided at the outlet of the heat exchange channel. The controller is used to execute a acquired computer program to implement any of the aforementioned adsorption bed monitoring methods. Since the above-described adsorption bed monitoring method has the aforementioned technical effects, the adsorption bed using this method should also have corresponding technical effects.

[0028] In some technical solutions, a first flow meter for monitoring the inlet flow rate of the heat exchange channel and a second temperature sensor for monitoring the inlet temperature of the heat exchange channel are also included. The controller can determine whether to execute the adsorption bed monitoring method based on the detection values ​​of the first flow meter and the second temperature sensor.

[0029] To achieve the third objective mentioned above, the present invention also provides a computer-readable storage medium for storing a computer program that, when executed by a processor, implements any of the aforementioned adsorption bed monitoring methods. Since the aforementioned adsorption bed monitoring method has the aforementioned technical effects, the computer-readable storage medium using this adsorption bed monitoring method should also have corresponding technical effects.

[0030] To achieve the fourth objective mentioned above, the present invention also provides a computer program product, comprising a computer program / instructions that, when executed by a processor, implement any of the aforementioned adsorption bed monitoring methods. Since the aforementioned adsorption bed monitoring method possesses the aforementioned technical effects, the computer program product applying this adsorption bed monitoring method should also possess corresponding technical effects. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a flowchart illustrating the adsorption bed monitoring method provided in an embodiment of the present invention.

[0033] Figure 2This is a flowchart illustrating another adsorption bed monitoring method provided in an embodiment of the present invention.

[0034] Figure 3 This is a schematic diagram of the adsorption bed provided in an embodiment of the present invention. Detailed Implementation

[0035] This invention discloses an adsorption bed monitoring method to effectively solve the problem of poor monitoring effect after desorption completion.

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-3 , Figure 1 This is a flowchart illustrating the adsorption bed monitoring method provided in an embodiment of the present invention. Figure 2 This is a flowchart illustrating another adsorption bed monitoring method provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the adsorption bed provided in an embodiment of the present invention.

[0038] In some embodiments, an adsorption bed monitoring method is provided, which mainly includes the following steps:

[0039] S10: Obtain the temperature of the first heat exchange fluid flowing out of the adsorption bed, as the first heat exchange fluid outlet temperature T. 1c .

[0040] The first heat exchange fluid can be either the adsorption heat exchange fluid or the desorption heat exchange fluid. For low-grade driven adsorption beds, the temperature of the desorption heat exchange fluid is generally between 50°C and 65°C before it enters the adsorption bed, and the outlet temperature typically decreases by 3 to 5°C during normal desorption. Conversely, the temperature of the adsorption heat exchange fluid is generally between 25°C and 35°C before it enters the adsorption bed, and the outlet temperature typically increases by 2 to 5°C during normal adsorption. Generally, the adsorption heat exchange fluid and the desorption heat exchange fluid can use the same heat exchange channel or different heat exchange channels, depending on the specific requirements.

[0041] The first heat exchange fluid flowing out of the adsorption bed refers to the temperature at the outlet of the adsorption bed heat exchange channel. The closer to the outlet, the more accurate the temperature, in order to reduce interference from the external environment.

[0042] It should be noted that the acquisition method at this time can be real-time acquisition or periodic acquisition, and the shorter the interval, the better.

[0043] S20: When the outlet temperature of the first heat exchange fluid reaches the first acquisition temperature, the corresponding first time node is determined. The first time node represents the actual time node completed in the current stage.

[0044] Regardless of whether the first heat exchange fluid is used for desorption or adsorption, after the adsorption bed performs desorption and adsorption, the temperature of the first heat exchange fluid at the outlet will gradually approach the temperature at the inlet until it stabilizes at a stable value, at which point desorption or adsorption is complete.

[0045] This stable value, the initial acquisition temperature, can be obtained based on the adsorption bed itself. There are two main methods: the first is based on the temperature difference between the outlet and inlet temperatures of the first heat exchange fluid, and a preset relationship; the second is to directly preset the corresponding value when the flow rate and temperature of the introduced first heat exchange fluid are stable. The preset relationship and the preset corresponding value are generally related to the characteristics of the adsorption bed itself, and can be calculated or obtained through preset experimental measurements. They are mainly related to the volume of the adsorption bed, the material and content of the adsorbent, and may even be related to the parameters of the evaporator and the condenser. Taking the second method mentioned above as an example, if the first heat exchange fluid introduced is the desorption heat exchange fluid with a stable flow rate and a temperature of around 55 degrees Celsius, according to experimental methods, after desorption is completed, the above heat exchange fluid is continuously introduced. It can be measured that the temperature of the first heat exchange fluid exiting the adsorption bed will stabilize at around 54.8 degrees Celsius. At this time, 54.5 degrees Celsius can be taken as the first acquisition temperature, which is 0.3 degrees Celsius lower. The purpose is to take into account that the former fluctuates around 54.8 degrees Celsius, generally fluctuating between 54.6 and 54.9 degrees Celsius. However, in the middle stage of desorption, the temperature of the first heat exchange fluid exiting the adsorption bed is generally around 50 degrees Celsius.

[0046] Taking the second example again, if the first heat exchange fluid introduced is an adsorption heat exchange fluid with a stable flow rate and a temperature of around 28 degrees Celsius, according to experimental methods, after adsorption is complete, the above heat exchange fluid is continuously introduced. It can be measured that the temperature of the first heat exchange fluid exiting the adsorption bed will stabilize at around 28.3 degrees Celsius. At this time, 28.6 degrees Celsius can be taken as the first acquisition temperature, which is 0.3 degrees Celsius higher. The purpose is to take into account that the former fluctuates around 28.5 degrees Celsius, generally fluctuating between 28.1 and 28.5 degrees Celsius. However, in the middle stage of adsorption, the temperature of the adsorption heat exchange fluid exiting the adsorption bed is generally around 32 degrees Celsius.

[0047] Therefore, the first acquisition temperature is generally the maximum possible deviation temperature (relative to the inlet temperature difference) of the first heat exchange fluid flowing out of the adsorption bed when the current stage is completed. It can even be larger than the maximum deviation temperature; for example, it's increased by 0.3 degrees Celsius in the desorption stage and decreased by 0.3 degrees Celsius in the adsorption stage to avoid inaccurate detection. Of course, the first acquisition temperature can also be based on the temperatures detected after the adsorption is completed in the previous stages, using the detected temperatures as a benchmark and then making corrections. For example, in the desorption stage, if the outlet temperature of the later stage is detected to be stable between 54.5 degrees Celsius and 54.8 degrees Celsius in the previous stage, then 54.2 degrees Celsius can be used as the first acquisition temperature. That is, the previous stage or two stages can be used as the experimental stage to update the first acquisition temperature in real time.

[0048] The corresponding first time point is determined, that is, when the outlet temperature of the first heat exchange fluid reaches the first acquisition temperature, the current time point is recorded. As mentioned above, the first acquisition temperature refers to the outlet temperature when desorption or adsorption is approximately complete. According to the temperature change trends of the adsorption and desorption stages, once the outlet reaches this temperature, it indicates that desorption or adsorption is complete, which is represented by the actual time point of completion of the current stage.

[0049] This time point can be used as a reference to switch the current working state in a timely manner. It can also be used to monitor the adsorption efficiency and / or desorption efficiency of the adsorption bed. If the preset time point is not reached by the first time point, such as being too late, it indicates that the adsorption efficiency or desorption efficiency is decreasing.

[0050] In the aforementioned adsorption bed monitoring method, a relatively stable heat exchange fluid is first introduced into the adsorption bed. The heat exchange fluid exhibits stable temperature and flow rate; the more stable the heat exchange fluid, the more representative the determined first time point. Simultaneously, this method allows for the detection of the actual completion time of the desorption or adsorption phases, facilitating more stable and efficient operation of the adsorption bed. In summary, this adsorption bed monitoring method effectively solves the problem of poor monitoring performance in current adsorption beds.

[0051] In some embodiments, further to better achieve monitoring, the method may include the following after step S20:

[0052] Step S30: Obtain the difference between the first time node and the first preset time node. If it exceeds the first preset range, output the first output result.

[0053] The first preset time node can be either the estimated time for the adsorption bed to complete the current stage, or the time node for terminating the current stage to switch to the next stage. Specifically, it can be set according to needs.

[0054] Generally, the first preset time node is a stable reference time node. Taking the estimated completion time of the current stage of the adsorption bed as the first preset time node as an example, under long-term use, due to the problem of efficiency decline, the first time node will become increasingly far away from the first preset time node corresponding to the same stage, that is, the estimated completion time point. The difference will gradually increase. When the difference is large enough to exceed the first preset range, it means that the efficiency of the adsorption bed is already very low.

[0055] Taking the termination time of the current stage as the first preset time point as an example, under long-term use, due to efficiency degradation, the first time point will become increasingly closer to the first preset time point corresponding to the same stage, i.e., the switching time point. The difference will gradually decrease. When it decreases beyond the first preset range, it indicates that the efficiency of the adsorption bed has significantly decreased, and timely maintenance is required to avoid switching before the current stage is completed. Taking desorption as an example, if the actual completion time is close to the time point for desorption termination and adsorption switching, under possible fluctuations, it is possible that the time point for desorption termination and adsorption switching is reached, but actual desorption is not completed. This will affect subsequent adsorption, potentially leading to a vicious cycle.

[0056] Specifically, the first preset range, taking the termination time of the current stage as an example, generally has a duration equal to the working length of the current stage compared to the start time of the current stage, typically between 15 and 25 minutes (e.g., 20 minutes). The detection time, compared to the start time of the current stage, is generally around 15 minutes, gradually approaching 20 minutes, with fluctuations of 0.5 minutes during this approach. Therefore, the first preset range is between 1 and 5 minutes. During operation, it will not exceed 5 minutes, but will gradually decrease from 5 minutes. When it decreases to 1 minute, it is still a safe phase. However, when it decreases to less than 1 minute, such as 0.5 minutes, it is very likely that the actual completion time of the current stage will exceed 20 minutes, and the adsorption bed will prematurely end the current stage.

[0057] It should be noted that the examples of some values ​​in the context are only for the purpose of facilitating the understanding of the method steps pointed out in this application. In actual applications, some values ​​in the context may be different and fluctuate greatly. Therefore, no limitation is imposed. So all values ​​that can be used with this method step should be acceptable.

[0058] In some embodiments, step S10 further comprises:

[0059] The temperature of the first heat exchange fluid flowing out of the adsorption bed is acquired in real time and used as the heat exchange fluid outlet temperature.

[0060] By using the temperature of the first heat exchange fluid in real time, we can ensure that the determined first time point is closer to the accurate value.

[0061] Of course, depending on the actual situation, it can also be retrieved periodically, such as at intervals of 0.1 to 2 seconds. This has little practical impact.

[0062] In some embodiments, step S10 is preceded by:

[0063] Step S40: Introduce the first heat exchange fluid into the adsorption bed, with the temperature within the first preset temperature range and the flow rate within the first preset flow rate range.

[0064] Furthermore, to make the obtained first time point more representative, a first heat exchange fluid with a temperature and flow rate within a first preset temperature range and a first preset flow rate range can be introduced into the adsorption bed. This ensures that the temperature and flow rate of the first heat exchange fluid are controlled within a limited range, making the temperature and flow rate of the first heat exchange fluid more uniform, as detailed in the value ranges below.

[0065] In some embodiments, after step S30, the method further includes:

[0066] Step S50: At the first preset time node, stop feeding the first heat exchange fluid, which is within the first preset temperature range and has a flow rate within the first preset flow rate range, into the adsorption bed.

[0067] That is, the first preset time node at this point refers to the switching time node. Generally, the switching time of the adsorption bed is set in advance to ensure that the adsorption heat exchange fluid and the desorption heat exchange fluid are alternately introduced into the adsorption bed periodically and stably. Through the above monitoring, it is possible to monitor whether the current stage has been completed at the switching point, thus ensuring the reliability of operation.

[0068] In some embodiments, furthermore, to better achieve monitoring, both the desorption and adsorption stages can generally be monitored. In this case, the first heat exchange fluid is defined as the heat exchange fluid for desorption, and the second heat exchange fluid is used as the heat exchange fluid for adsorption. Specifically, after step S50, the method may further include:

[0069] Step S60: The adsorption bed is introduced with the second heat exchange fluid, the temperature of which is within the second preset temperature range and the flow rate of which is within the second preset flow rate range. The first heat exchange fluid is a heat source fluid for desorption and the second heat exchange fluid is a cooling fluid for adsorption.

[0070] Step S70: Obtain the temperature of the second heat exchange fluid flowing out of the adsorption bed, and use it as the outlet temperature of the second heat exchange fluid;

[0071] Step S80: When the outlet temperature of the second heat exchange fluid reaches the second acquisition temperature, the corresponding second time node is determined. The second time node represents the actual time node completed in the current stage.

[0072] Step S90: Obtain the difference between the second time node and the second preset time node. If it exceeds the second preset range, output the second output result.

[0073] Step S100: At the second preset time node, stop feeding the second heat exchange fluid, which is within the second preset temperature range and has a flow rate within the second preset flow rate range, into the adsorption bed.

[0074] Steps S70, S80, S90, and S100 can be referred to the corresponding steps above, with the key difference being that the previous description focused on the first heat exchange fluid, while this description focuses on the second heat exchange fluid. In application, one of the first and second heat exchange fluids is used for desorption, and the other is used for adsorption.

[0075] The second temperature acquisition method refers to the first temperature acquisition method described above, the second preset time node refers to the first preset time node described above, and the second preset range refers to the first preset range described above. Further details will not be provided here.

[0076] Furthermore, both the first and second outputs can be set to alarm messages to prompt staff to perform maintenance. The alarm methods could include sending a warning message to the monitoring platform or sending an alarm sound.

[0077] In some embodiments, the first heat exchange fluid with a first preset temperature range and a first preset flow rate range, and the second heat exchange fluid with a second preset temperature range and a second preset flow rate range, are intended to represent that the input heat exchange fluid is stable, i.e., the fluctuation range is relatively small, generally controlled within 1%. Specifically, the first preset temperature range can be set to a value within T... 1y With 1.01*T 1y Between, the first preset flow range is in Q 1y With 1.01*Q 1y Between; the second preset temperature range is within T 2y With 1.01*T 2y Between, the second preset flow rate range is in Q 2y With 1.01*Q 2y Between; where T 1y Q1y T 2y and Q 2y These are all preset values. They are generally set according to the working characteristics of the adsorption bed.

[0078] In some embodiments, an adsorption bed monitoring method is provided, which specifically includes the following steps:

[0079] Step 210: Introduce a desorption heat exchange fluid with a temperature within the first preset temperature range and a flow rate within the first preset flow rate range into the adsorption bed.

[0080] The heat exchange fluid for desorption, with an inlet temperature and flow rate within the first preset temperature range and the first preset flow rate range, should be a heat exchange fluid with very small fluctuations. Generally, the fluctuation range should be referenced to the preset heat exchange range of the adsorption bed. Of course, it is also related to the control precision. Generally speaking, for a desorption heat exchange fluid with a temperature of 50 to 60 degrees Celsius, its temperature should be controlled to fluctuate within a range of 0.5 degrees Celsius, that is, the temperature difference between the maximum and minimum values ​​in the first preset temperature range should be less than 0.5 degrees Celsius, or the fluctuation range should be less than 1% of the lowest value in that range. 1y With 1.01*T 1y (Where * indicates the product of the former and the latter). Similarly, for flow rate, temperature control accuracy is also involved, and its control accuracy should be controlled within 1%, i.e., within the first preset temperature range Q. 1y With 1.01*Q 1y between.

[0081] Generally, during several consecutive desorption stages, a desorption heat exchange fluid with a temperature and flow rate within a first preset temperature range should be introduced. After determining the desorption heat exchange fluid within the first preset temperature and flow rate range, an adsorption heat exchange fluid with a second preset temperature and flow rate range is typically introduced into the adsorption bed. Similarly, during the desorption stage, strict requirements are placed on the temperature and flow rate of the cooling fluid introduced into the condenser to ensure that both desorption and adsorption durations are controlled within a stable range.

[0082] Considering that different operating conditions may occur during long-term applications, and to improve adaptability when these conditions change, a desorption heat exchange fluid with an inlet temperature and flow rate within a third preset temperature range may also be introduced in actual use.

[0083] Step 220: Obtain the temperature of the desorption heat exchange fluid flowing out of the adsorption bed in real time, and use it as the outlet temperature T of the desorption heat exchange fluid. jc .

[0084] That is, after the desorption heat exchange fluid is introduced, if the inlet temperature of the introduced desorption heat exchange fluid is T... jr (T) 1y With 1.01*T 1y (between), and then monitor in real time the temperature of the desorption heat exchange fluid flowing out of the adsorption bed, that is, the outlet temperature of the desorption heat exchange fluid.

[0085] As shown in the attached diagram, the desorption phase is mainly divided into four stages, from the start time to the end time, as follows:

[0086] During the preheating stage, the inlet temperature and outlet temperature of the heat exchange fluid used for desorption (T) are... jr -T jc The temperature difference range is relatively large and significant because the adsorption bed needs to be heated and absorb heat quickly. The time is related to the design parameters of the adsorption bed and will generally stabilize within a stable time range, such as 16 to 40 seconds, which is significantly shorter than the duration of the entire desorption stage.

[0087] In the initial stage of desorption, the inlet temperature and outlet temperature of the heat exchange fluid used for desorption (T) jr -T jc The temperature range is in the second temperature difference range, and the overall value of the second temperature difference range is significantly smaller than that of the first temperature difference range. Furthermore, the rate of change is generally slower. This is compared to the outlet temperature T of the heat exchange fluid used for desorption in the preheating stage. jc Closer to the inlet temperature T of the heat exchange fluid used for desorption jr Compared to the preheating stage, because there is no need to rapidly raise the temperature of the adsorbent and heat transfer structures inside the adsorption bed, the outlet temperature T of the heat exchange fluid used for desorption is lower. jc It will rise. While the increase is still relatively large compared to the later stages, this is because the adsorption bed has a high concentration of adsorbent and high desorption efficiency, thus requiring more heat.

[0088] In the later stage of desorption, the inlet temperature and outlet temperature of the heat exchange fluid used for desorption (T) jr -T jc The temperature is in the third temperature range, where the overall value of the third temperature range is significantly smaller than that of the second temperature range. This means that compared to the outlet temperature T of the heat exchange fluid used for desorption in the early stage of the analysis... jc Closer to the inlet temperature T of the heat exchange fluid used for desorption jr Because the adsorption bed has a low content of working fluid and low desorption efficiency, it requires relatively little heat. Therefore, compared to the initial stage of desorption, the outlet temperature T of the heat exchange fluid used for desorption is lower. jc It will rise.

[0089] Desorption is complete. At this point, the inlet temperature and outlet temperature of the heat exchange fluid used for desorption (T) are... jr -T jc The temperature is within the fourth temperature range, where it is relatively stable, meaning it is lower than the outlet temperature T of the heat exchange fluid used for desorption in the later stages of analysis. jc Closer to the inlet temperature T of the heat exchange fluid used for desorption jr And it will be within a stable range. At this point, the heat exchange fluid used for desorption basically does not need to release heat to the adsorbent working medium; the temperature difference exists because of heat loss. Therefore, compared to the later stage of desorption, the outlet temperature T of the heat exchange fluid used for desorption is lower. jc It will rise, and will stabilize within a very small temperature range, remaining basically stable.

[0090] Based on the above analysis, it can be found that when the temperature and flow rate of the heat exchange fluid used for desorption are stable, the outlet temperature T of the heat exchange fluid used for desorption will be [value missing] when desorption is complete. jc It will stabilize within a very small fluctuation range; similarly, this can be understood as the outlet temperature T of the heat exchange fluid used for desorption. jc It reached its highest temperature.

[0091] Step 230: When the outlet temperature of the heat exchange fluid used for desorption reaches the first acquisition temperature, determine the corresponding first time node t. jw If the difference between the first time node and the first preset time node exceeds the first time difference, then the first output result is output.

[0092] This involves monitoring the temperature of the heat exchange fluid used for desorption to determine whether the first acquisition temperature has been reached, thus indicating whether desorption is complete. When the temperature of the heat exchange fluid used for desorption is detected to rise and reach the first acquisition temperature, the current time point is recorded, representing the time point when desorption is complete. The first acquisition temperature is generally preset, but can also be obtained through periodic measurements. As analyzed above, the first acquisition temperature should be the temperature of the heat exchange fluid outlet when desorption is complete.

[0093] Generally, once the adsorption bed is set up, its heat loss remains constant. Furthermore, when the temperature and flow rate of the desorption heat exchange fluid are relatively stable, the temperature at the completion of desorption is also relatively uniform. Therefore, it is possible to accurately determine whether desorption is complete. Thus, the aforementioned initial temperature can be measured in advance based on the adsorption bed and used as a preset value.

[0094] Specifically, the difference between the first time node and the first preset time node is obtained. If the difference exceeds the first time difference, the first output result is output. The first preset time node represents the preset time node for completion of the desorption process. This time node can be the point at which the cooling fluid for adsorption is switched on, i.e., the point at which the cooling fluid for desorption is stopped. For adsorption beds, where the flow rate and temperature are uniform, switching is generally performed periodically to alternate between desorption and adsorption. This periodicity is usually set based on the pre-assessed desorption and adsorption durations, and it needs to ensure that desorption and adsorption are completed alternately. Therefore, the point at which the cooling fluid for desorption is stopped is generally determined in advance.

[0095] Of course, this preset desorption completion time can also be a pre-stored desorption completion time. As mentioned above, during the use of the adsorption bed, the desorption time is generally controlled to avoid it being too long, thereby obtaining a stable ratio of desorption time to adsorption time, so as to stably alternate between desorption and adsorption. Generally, there is an estimated value for the desorption completion time of the adsorption bed, and the aforementioned periodic switching time is also set based on this estimated value.

[0096] And the periodic switching time t jd Or the estimated parsing completion time t jy Adding the current time point t for switching the heat exchange fluid used for analysis j This allows us to obtain the first preset time node. Where t... jw -t j This can be considered as the actual adsorption time.

[0097] In actual use, t j +t jy It will be less than t jw Because in practical applications, due to the adsorption efficiency issues of the adsorption bed, this t jw The actual desorption completion time will gradually increase, t j +t jy and t jw The difference between them is generally controlled within a preset range. If it exceeds this preset range, such as t j +t jy and t jw When the difference expands beyond a certain time value, the first output result needs to be output, indicating that the adsorption bed desorption efficiency has decreased. This requires attention, maintenance, or other corresponding operations.

[0098] On the other hand, in practical use, t j +t jd It will be greater than t jwIn practical applications, it is necessary to ensure complete desorption to avoid residual amounts affecting subsequent adsorption. Furthermore, with increasing application, t jw The actual desorption completion time will gradually increase, therefore it will be related to t. j +t jd The difference should decrease, but it shouldn't be too small. If it's too small, fluctuations in parsing time will lead to incomplete parsing. Therefore, it's necessary to control t. jw With t j +t jd The range of the difference; if it exceeds this preset range, such as t j +t jd and t jw When the difference decreases to a certain time value, the first output result needs to be output, that is, the adsorption bed desorption efficiency has decreased, which needs to be noted or repaired, or other corresponding operations need to be carried out.

[0099] In the above judgment, when the outlet temperature of the heat exchange fluid used for desorption reaches the first acquisition temperature, the corresponding first time point needs to be recorded as the time point for desorption completion. Then, the actual desorption time is obtained, and it is determined whether the desorption time exceeds the preset desorption time. If it does, it indicates that the desorption state of the adsorption bed has changed, requiring maintenance. Otherwise, desorption may not be completed before switching to adsorption, affecting the subsequent adsorption effect and potentially leading to a vicious cycle. Through the above monitoring method, the desorption efficiency of the adsorption bed can be monitored.

[0100] Step 240: At the first preset time point, stop feeding the desorption heat exchange fluid, which is within the first preset temperature range and the flow rate is within the first preset flow rate range, into the adsorption bed.

[0101] At this point, the first preset time node should be t. j +t jd That is, the time node t for switching the flow of the heat exchange fluid for analysis. j Add the periodic switching time t jd .

[0102] Step 250: Introduce an adsorption heat exchange fluid with a temperature within the second preset temperature range and a flow rate within the second preset flow rate range into the adsorption bed.

[0103] The adsorption heat exchange fluid, with an inlet temperature and flow rate within the second preset temperature range and flow rate range, should be a cooling fluid with very small fluctuations. Generally, the fluctuation range should be referenced to the preset heat exchange range of the adsorption bed. Of course, it is also related to the control precision. Generally, for the desorption heat exchange fluid with a temperature between 25°C and 35°C, its temperature should be controlled to fluctuate within a range of 0.5°C, that is, the temperature difference between the maximum and minimum values ​​within the second preset temperature range should be less than 0.5°C, or the fluctuation range should be less than 1% of the lowest value within that range. 2y With 1.01*T 2y (Where * indicates the product of the former and the latter). Similarly, for flow rate, temperature control accuracy is also involved, and its control accuracy should be controlled within 1%, i.e., within the first preset temperature range Q. 2y With 1.01*Q 2y between.

[0104] Generally, during several consecutive adsorption stages, a desorption heat exchange fluid with a temperature and flow rate within a second preset temperature range should be introduced. After determining the desorption heat exchange fluid within the second preset temperature and flow rate range, a desorption heat exchange fluid within a first preset temperature and flow rate range is typically introduced into the adsorption bed. At this point, even the refrigerant introduced into the evaporator will have strict requirements on its temperature and flow rate, such as being controlled within preset ranges, to ensure controlled adsorption time.

[0105] Considering that different operating conditions may occur during long-term applications, and to improve adaptability when these conditions change, an adsorption heat exchange fluid with an inlet temperature and flow rate within the fourth preset temperature and flow rate range may be introduced in actual use.

[0106] Step 260: Obtain the temperature of the adsorption heat exchange fluid flowing out of the adsorption bed in real time, and use it as the outlet temperature T of the adsorption heat exchange fluid. xc .

[0107] That is, after the adsorption heat exchange fluid is introduced, if the inlet temperature of the adsorption heat exchange fluid is T... xr (T) 2y With 1.01*T 2y (between), and then monitor in real time the temperature of the remediation heat exchange fluid flowing out of the adsorption bed, that is, the outlet temperature T of the adsorption heat exchange fluid. xc .

[0108] Based on the start and end times of the adsorption phase, it is mainly divided into four stages, as follows:

[0109] During the pre-cooling stage, the outlet temperature of the adsorption heat exchange fluid and the inlet temperature of the adsorption heat exchange fluid (T) are... xc - T xr The temperature range is within the fifth temperature difference range, which exhibits significant and pronounced variations due to the need for cooling and rapid heat release within the adsorption bed. Consequently, the outlet temperature of the heat exchange fluid used for desorption is relatively high. The time is related to the design parameters of the adsorption bed and generally stabilizes within a stable time range, such as 16 to 40 seconds, which is significantly shorter than the overall adsorption stage duration.

[0110] In the initial stage of adsorption, the outlet temperature and inlet temperature of the adsorption heat exchange fluid (T) are... xc - T xr The temperature range is in the sixth temperature difference range. The overall value of the sixth temperature difference range is significantly smaller than that of the fifth temperature difference range, and the rate of change is significantly slower. That is, compared with the outlet temperature T of the heat exchange fluid used for desorption in the preheating stage... xc Closer to the inlet temperature T of the heat exchange fluid used for adsorption xr Compared to the precooling stage, because there is no need to rapidly cool the adsorbent and heat transfer structures inside the adsorption bed, the outlet temperature T of the heat exchange fluid used for adsorption is lower. jc It will decrease. However, compared to the later stages, it is still relatively large because the adsorption bed can adsorb a large amount of working fluid and has a high adsorption efficiency, thus requiring a large amount of heat.

[0111] In the later stage of adsorption, the outlet temperature and inlet temperature of the adsorption heat exchange fluid (T) are... xc - T xr The temperature is in the seventh temperature range, where the overall value is significantly lower than that of the sixth temperature range. This means that compared to the initial desorption stage, the temperature of the heat exchange fluid outlet T is lower. xc Closer to the inlet temperature T of the heat exchange fluid used for adsorption xr Because the adsorption bed can adsorb low concentrations of working fluid and has low adsorption efficiency, it requires relatively little heat. Therefore, compared to the initial stage of desorption, the outlet temperature T of the heat exchange fluid used for adsorption is lower. jc It will decrease to get closer to the inlet temperature T of the heat exchange fluid used for adsorption. xr .

[0112] Adsorption is complete. At this point, the outlet temperature of the adsorption heat exchange fluid and the inlet temperature of the adsorption heat exchange fluid (T) are... xc - T xr It is within the eighth temperature difference range, that is, compared to the outlet temperature T of the heat exchange fluid used for desorption in the initial stage of adsorption. xc Closer to the inlet temperature T of the heat exchange fluid used for adsorption xrAnd it stabilizes. At this point, the heat exchange fluid used for adsorption can basically no longer absorb heat from the adsorption working medium. If there is a temperature difference, it is due to heat loss, but the heat loss is stable, so T xc - T xr It is a very stable value. Therefore, compared to the later stage of adsorption, the outlet temperature T of the heat exchange fluid used for adsorption is... xc It will decrease, and will stabilize within a very small temperature range, remaining essentially stable.

[0113] Based on the above analysis, it can be found that when the temperature and flow rate of the adsorption heat exchange fluid are stable, the outlet temperature T of the adsorption heat exchange fluid will be [value missing] when adsorption is complete. jc It will decrease and stabilize within a very small fluctuation range; similarly, this can be understood as the outlet temperature T of the heat exchange fluid used for adsorption. jc It reached its highest temperature.

[0114] Step 270: When the outlet temperature of the heat exchange fluid for adsorption reaches the second acquisition temperature, determine the corresponding second time node t. xw If the difference between the second time node and the second preset time node exceeds the second time difference, then the second output result is output.

[0115] This involves monitoring the temperature of the heat exchange fluid used for adsorption to determine whether the second acquisition temperature has been reached, thus indicating whether adsorption is complete. When the temperature of the heat exchange fluid used for adsorption is detected to rise to reach the second acquisition temperature, the current time point is recorded, representing the adsorption completion time point. The second acquisition temperature is generally preset, but can also be obtained through periodic measurements. As analyzed above, the second acquisition temperature should be the outlet temperature of the heat exchange fluid used for adsorption when adsorption is complete.

[0116] Generally, once the adsorption bed is set up, its heat loss remains constant. Furthermore, when the temperature and flow rate of the heat exchange fluid used for adsorption are relatively stable, the temperature at the completion of adsorption is also relatively uniform. Therefore, it is possible to accurately determine whether adsorption is complete. Thus, the aforementioned second temperature can be measured in advance based on the adsorption bed and used as a preset value.

[0117] Specifically, the difference between the second time node and the second preset time node is obtained. If the difference exceeds the second time difference, a second output result is output. The second preset time node represents the preset adsorption completion time node. This time node can be the point at which the cooling fluid for desorption is switched on, i.e., the point at which the cooling fluid for adsorption is stopped. For adsorption beds, under uniform flow and temperature conditions, switching is generally performed periodically to alternate between desorption and adsorption. This periodicity is usually set based on the pre-assessed adsorption and desorption durations, and it needs to ensure that desorption and adsorption are completed alternately. Therefore, the point at which the cooling fluid for adsorption is stopped is generally determined in advance.

[0118] Of course, this preset adsorption completion time can also be a pre-stored adsorption completion time. As mentioned above, during the use of the adsorption bed, the adsorption time is generally controlled to avoid excessive adsorption time, thereby obtaining a stable ratio of desorption time to adsorption time, allowing for stable alternation of desorption and adsorption. Generally, there is an estimated value for the adsorption completion time of the adsorption bed, and the aforementioned periodic switching time is set based on this estimated value. In dual adsorption bed operation, the predetermined desorption time and adsorption time are equal.

[0119] And the periodic switching time t xd Or the estimated parsing completion time t xy Adding the current time point t for switching the adsorption heat exchange fluid in. x This allows us to obtain the first preset time node. Where t... xw -t x This can be considered as the actual adsorption time.

[0120] In actual use, t x +t xy It will be less than t xw Because in practical applications, due to the adsorption efficiency issues of the adsorption bed, this t xw The actual desorption completion time will gradually increase, t x +t xy and t xw The difference between them is generally controlled within a preset range. If it exceeds this preset range, such as t x +t xy and t xw When the difference expands beyond a certain time value, the first output result needs to be output, indicating that the adsorption efficiency of the adsorption bed has decreased. This requires attention, maintenance, or other corresponding operations.

[0121] In practical use, t x +t xd It will be greater than t xwIn practical applications, it is necessary to ensure complete adsorption to avoid unsaturated adsorption, which could affect subsequent desorption. Furthermore, with the increasing application, t xw The actual adsorption completion time will gradually increase, therefore it will be related to t. x +t xd The difference should decrease, but it shouldn't be too small. If it's too small, fluctuations in adsorption time will lead to incomplete adsorption. Therefore, it's necessary to control t. xw With t x +t xd The range of the difference; if it exceeds this preset range, such as t x +t xd and t xw When the difference decreases to a certain time value, the first output result needs to be output, that is, the adsorption efficiency of the adsorption bed has decreased, which requires attention or maintenance, or other corresponding operations.

[0122] In the above judgment, when the outlet temperature of the heat exchange fluid used for adsorption reaches the second acquisition temperature, a second time node needs to be recorded to directly serve as the time node for adsorption completion. The actual adsorption time is then obtained, and it is determined whether the adsorption time exceeds the preset adsorption time. If it does, it indicates a change in the adsorption state of the adsorption bed, requiring maintenance. Otherwise, adsorption may not be completed before switching to desorption, affecting the subsequent desorption effect and potentially leading to a vicious cycle. This monitoring method allows for the monitoring of the adsorption efficiency of the adsorption bed.

[0123] Step 280: At the second preset time node, stop supplying the adsorption heat exchange fluid within the second preset temperature range and the flow rate within the second preset flow rate range.

[0124] At this point, the second preset time node should be t. x +t xd That is, the time point t when switching the heat exchange fluid for adsorption is introduced. x Add the periodic switching time t xd .

[0125] Step 290: Return to step 210 until the adsorption bed stops running.

[0126] Based on the adsorption bed monitoring method provided in the above embodiments, the present invention also provides an adsorption bed, which includes a control valve, an adsorption chamber with adsorbent, and a heat exchange channel passing through the adsorption chamber and capable of exchanging heat with the adsorbent. The control valve is used to switch the heat exchange fluid flowing into the heat exchange channel for desorption and adsorption respectively. Furthermore, a controller is provided, and a first temperature sensor is provided at the outlet of the heat exchange channel. The controller is used to execute an acquired computer program to implement any one of the adsorption bed monitoring methods in the above embodiments. Since this adsorption bed adopts the adsorption bed monitoring method in the above embodiments, the beneficial effects of this adsorption bed are explained in the above embodiments.

[0127] The adsorption bed contains an adsorbent in its adsorption chamber. The working fluid, used in conjunction with the adsorbent, flows through the adsorption chamber and the condensation chamber of the condenser, and also flows through the evaporator. The working fluid and adsorbent combine to form a working fluid pair. In an adsorption refrigeration system, multiple working fluid pairs can be configured. One adsorbent can be paired with different working fluids, or multiple adsorbents can be paired with a single working fluid. A typical adsorption refrigeration system includes the aforementioned adsorption bed, evaporator, and condenser.

[0128] For adsorption beds, there are two main operating states: adsorption and desorption, which are generally carried out in stages. In the adsorption state, a low-temperature fluid, i.e., the heat exchange fluid for adsorption, is used to cool the adsorption bed, allowing the adsorbent within the bed to adsorb the gaseous working fluid, ensuring continuous adsorption capacity in the adsorption chamber until the adsorbent reaches a preset saturation state. Taking physical adsorption as an example, the gaseous working fluid liquefies into a liquid state, maintaining a low-pressure state within the adsorption chamber to continuously draw in gaseous working fluid, such as continuously adsorbing gaseous working fluid from the evaporator, allowing the evaporator to continuously absorb heat through evaporation. In the desorption state, a high-temperature fluid, i.e., the heat exchange fluid for desorption, is generally used to heat the adsorption bed, causing the adsorbent to desorb from the adsorbent, forming a gaseous working fluid again. This gaseous working fluid then enters the condenser, where it liquefies back into a liquid state. The evaporator and condenser can be the same structure to alternate between evaporation and condensation; or they can be two structures, as shown in the attached figure. When there are two adsorption beds, the two adsorption beds alternate between desorption and adsorption. At this time, the adsorption time and desorption time are approximately equal. In this case, two structures can be used as the evaporator and condenser, respectively.

[0129] The adsorption bed has heat exchange channels for heat exchange with the adsorbent in the adsorption chamber. These heat exchange channels are designed to allow the flow of a high-temperature fluid (heat source fluid) during the desorption phase. During the adsorption phase, these channels can be closed or used to allow the flow of a low-temperature fluid. The heat exchange channels exchange heat with the adsorbent, ensuring that during the desorption phase, a high-temperature fluid flows through them, keeping the entire adsorption chamber at a high temperature. After absorbing heat, the adsorbent desorbs a gaseous working fluid, which absorbs heat from the high-temperature fluid in the heat exchange channels. This gaseous working fluid can be discharged to the outside or into the condenser's condensation chamber, where it is condensed back into a gaseous state.

[0130] The control valve is typically a three-way valve, used to alternately introduce the adsorption heat exchange fluid and the desorption heat exchange fluid. Alternatively, multiple three-way valves can be installed to correspond to multiple adsorption beds, allowing the adsorption heat exchange fluid and the desorption heat exchange fluid to be alternately introduced into each adsorption bed.

[0131] Furthermore, the system may also include a first flow meter for monitoring the inlet flow rate of the heat exchange channel and a second temperature sensor for monitoring the inlet temperature of the heat exchange channel. The controller can determine whether to execute the adsorption bed monitoring method based on the detection values ​​of the first flow meter and the second temperature sensor. This ensures monitoring is performed while maintaining a stable supply of heat exchange fluid, thereby improving the reliability of the monitoring.

[0132] Based on the adsorption bed monitoring method provided in the above embodiments, the present invention also provides a computer-readable storage medium for storing a computer program, which, when executed by a processor, implements any one of the adsorption bed monitoring methods in the above embodiments. Since this computer-readable storage medium employs the adsorption bed monitoring method in the above embodiments, the beneficial effects of this computer-readable storage medium can be found in the above embodiments.

[0133] Based on the adsorption bed monitoring method provided in the above embodiments, the present invention also provides a computer program product, which includes a computer program / instructions. When executed by a processor, the computer program / instructions implement any one of the adsorption bed monitoring methods in the above embodiments. Since this computer program product employs the adsorption bed monitoring method in the above embodiments, the beneficial effects of this computer program product are explained in the above embodiments.

[0134] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0135] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for monitoring an adsorption bed, characterized in that, Includes the following steps: The temperature of the first heat exchange fluid flowing out of the adsorption bed is obtained as the outlet temperature of the first heat exchange fluid. When the outlet temperature of the first heat exchange fluid reaches the first acquisition temperature, the corresponding first time node is determined. The first time node represents the actual time node completed in the current stage.

2. The adsorption bed monitoring method according to claim 1, characterized in that, Also includes: Obtain the difference between the first time node and the first preset time node. If the difference exceeds the first preset range, output the first output result.

3. The adsorption bed monitoring method according to claim 2, characterized in that, The step of obtaining the temperature of the first heat exchange fluid flowing out of the adsorption bed as the first heat exchange fluid outlet temperature includes: The temperature of the first heat exchange fluid flowing out of the adsorption bed is obtained in real time and used as the outlet temperature of the first heat exchange fluid.

4. The adsorption bed monitoring method according to claim 3, characterized in that, The step of obtaining the temperature of the first heat exchange fluid flowing out of the adsorption bed as the first heat exchange fluid outlet temperature further includes: The first heat exchange fluid, with a temperature within a first preset temperature range and a flow rate within a first preset flow rate range, is introduced into the adsorption bed.

5. The adsorption bed monitoring method according to claim 4, characterized in that, The process of obtaining the difference between the first time node and the first preset time node, and outputting a first output result if the difference exceeds a first preset range, further includes: At the first preset time point, the flow of the first heat exchange fluid within the first preset temperature range and the flow rate within the first preset flow rate range into the adsorption bed is stopped.

6. The adsorption bed monitoring method according to claim 5, characterized in that, After stopping the flow of desorption heat exchange fluid within a first preset temperature range and at a first preset flow rate range into the adsorption bed at the first preset time node, the process further includes: The adsorption bed is fed with a second heat exchange fluid whose temperature is within a second preset temperature range and whose flow rate is within a second preset flow rate range. The first heat exchange fluid is a heat source fluid for desorption, and the second heat exchange fluid is a cooling fluid for adsorption. The temperature of the second heat exchange fluid flowing out of the adsorption bed is obtained as the outlet temperature of the second heat exchange fluid. When the outlet temperature of the second heat exchange fluid reaches the second acquisition temperature, the corresponding second time node is determined. The second time node represents the actual time node completed in the current stage. Obtain the difference between the second time node and the second preset time node. If the difference exceeds the second preset range, output the second output result. At the second preset time point, the flow of the second heat exchange fluid within the second preset temperature range and the flow rate within the second preset flow rate range into the adsorption bed is stopped.

7. The adsorption bed monitoring method according to claim 6, characterized in that, Both the first output result and the second output result include alarm information.

8. The adsorption bed monitoring method according to claim 7, characterized in that, The first preset temperature range is within T 1y With 1.01*T 1y Between, the first preset flow range is in Q 1y With 1.01*Q 1y Between; the second preset temperature range is within T 2y With 1.01*T 2y Between, the second preset flow rate range is in Q 2y With 1.01*Q 2y Between; where T 1y Q 1y T 2y and Q 2y All are preset values.

9. An adsorption bed, comprising a control valve, an adsorption chamber containing an adsorbent, and a heat exchange channel passing through the adsorption chamber and capable of exchanging heat with the adsorbent, wherein the control valve is used to switch the heat exchange fluid flowing through the heat exchange channel for desorption and adsorption respectively, characterized in that, It also includes a controller, wherein a first temperature sensor is provided at the outlet of the heat exchange channel, and the controller is used to execute the acquired computer program to implement the adsorption bed monitoring method as described in any one of claims 1 to 8.

10. The adsorption bed according to claim 9, characterized in that, It also includes a first flow meter for monitoring the inlet flow rate of the heat exchange channel and a second temperature sensor for monitoring the inlet temperature of the heat exchange channel. The controller can determine whether to execute the adsorption bed monitoring method based on the detection values ​​of the first flow meter and the second temperature sensor.

11. A computer-readable storage medium, characterized in that, Used to store a computer program, which, when executed by a processor, implements the adsorption bed monitoring method as described in any one of claims 1 to 8.

12. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the adsorption bed monitoring method according to any one of claims 1 to 8.

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