Gas drying system and gas compression system

Abstract

The present application provides a gas drying system and a gas compression system. The gas drying system comprises a drying device, a first temperature sensor and a second temperature sensor; the drying device comprises a housing and a rotary drum; a drying space and a regeneration space are formed in the housing; a drying agent is provided in the rotary drum; the rotary drum is rotatably arranged in the housing so as to drive the drying agent to successively pass through the drying space and the regeneration space; the first temperature sensor and the second temperature sensor are provided at different positions in the regeneration space; and the first temperature sensor and the second temperature sensor are respectively used for measuring the temperatures at the different positions in the regeneration space. The gas drying system can accurately monitor the regeneration condition of the drying agent, so that the regeneration effect of the drying agent and the energy consumption of the system can both be considered.

Description

Gas drying system and gas compression system Technical Field

[0001] The present application relates to the field of gas drying technology, and in particular to a gas drying system and a gas compression system. Background Art

[0002] Adsorption gas dryers typically use a desiccant to dry the gas being dried. As the desiccant's adsorption time increases and the amount of water adsorbed increases, the adsorbent's adsorption efficiency gradually decreases. Therefore, the adsorbent must be regularly regenerated to maintain its adsorption efficiency and, consequently, the drying effect. The desiccant regeneration process is directly related to the subsequent gas drying effect and the dryer's energy consumption. However, conventional adsorption gas dryers have poor monitoring accuracy for the desiccant regeneration process, and there is still room for improvement in balancing desiccant regeneration efficiency and dryer energy consumption.

[0003] Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the present application provides a gas drying system and a gas compression system. The technical solutions provided in the present application are as follows.

[0005] A first aspect of the present application provides a gas drying system, comprising:

[0006] The drying device comprises a housing and a drum, wherein the housing has a drying space and a regeneration space, the drum is provided with a desiccant, and the drum is rotatably disposed in the housing to drive the desiccant to pass through the drying space and the regeneration space successively;

[0007] The first temperature sensor and the second temperature sensor are arranged at different positions of the regeneration space, and the first temperature sensor and the second temperature sensor are respectively used to detect the temperatures at different positions of the regeneration space.

[0008] In some embodiments, the first temperature sensor and the second temperature sensor are respectively arranged at different positions of the regeneration space in the first direction and / or at different positions in the second direction;

[0009] The first direction is the rotation direction of the drum, and the second direction is the rotation centerline direction of the drum.

[0010] In some embodiments, the drying space is formed by an inner cavity of the shell located within a first central angle range, and the regeneration space is formed by an inner cavity of the shell located within a second central angle range;

[0011] Wherein, the vertex of the first central angle and the vertex of the second central angle are located on the rotation center line of the drum.

[0012] In some embodiments, the first temperature sensor and the second temperature sensor are respectively located on two sides of a target plane, and the target plane is a plane defined by an angle bisector of the second central angle and a rotation centerline of the drum.

[0013] In some embodiments, a first angle is defined between the first temperature sensor and the target plane, a second angle is defined between the second temperature sensor and the target plane, the vertices of the first angle and the second angle are both located on the rotation centerline of the drum, and the ratio of the first angle to the second angle is 0.5 to 1.

[0014] In some embodiments, a third angle is defined between the first temperature sensor and the second temperature sensor, the vertex of the third angle is located on the rotation centerline of the drum, and the angle of the third angle is in a range of 50° to 80°.

[0015] In some embodiments, the distance between the first temperature sensor and the second temperature sensor in the second direction is 0 cm to 15 cm.

[0016] In some embodiments, the shell is provided with a plurality of detection holes penetrating into the regeneration space, and the first temperature sensor and the second temperature sensor extend from one of the detection holes respectively into between the inner periphery of the shell and the outer periphery of the drum.

[0017] In some embodiments, it further includes:

[0018] A controller is configured to control a workload of the drying device based on a detection result of the first temperature sensor and a detection result of the second temperature sensor.

[0019] In some embodiments, the controller is specifically configured to:

[0020] The rotation speed of the rotating drum is controlled based on the detection result of the first temperature sensor and the detection result of the second temperature sensor.

[0021] In some embodiments, the controller is specifically configured to:

[0022] determining an equivalent temperature capable of identifying a temperature state of the regeneration space based on a detection result of the first temperature sensor and a detection result of the second temperature sensor;

[0023] Based on the equivalent temperature, the rotation speed of the drum is controlled.

[0024] In some embodiments, the controller is specifically configured to:

[0025] When the equivalent temperature falls within a first temperature range, reducing the rotation speed of the drum; the first temperature range is used to indicate that the supply of regeneration gas in the regeneration space is greater than the demand for regeneration gas for desiccant regeneration;

[0026] When the equivalent temperature is within a second temperature range, the rotation speed of the drum is increased; the second temperature range is used to indicate that the supply of regeneration gas in the regeneration space is less than the demand for regeneration gas for desiccant regeneration.

[0027] In some embodiments, the gas drying system further comprises a flow mixing device, wherein an air inlet of the flow mixing device is used to receive the gas to be dried; another air inlet of the flow mixing device is connected to the air outlet of the regeneration space, and is used to receive wet regeneration gas from the regeneration space; the air outlet of the flow mixing device is connected to the air inlet of the drying space, and the flow mixing device is used to transport a mixed gas formed by mixing the gas to be dried and the wet regeneration gas to the drying space; the controller is specifically used to:

[0028] Based on the detection result of the first temperature sensor and the detection result of the second temperature sensor, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas is controlled.

[0029] In some embodiments, the gas drying system further includes a third temperature sensor, wherein the third temperature sensor is used to detect the inlet air temperature of the drying space; and the controller is specifically used to:

[0030] Based on the detection results of the first temperature sensor, the detection results of the second temperature sensor, and the detection results of the third temperature sensor, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas is controlled.

[0031] In some embodiments, the gas drying system further comprises a first valve, a second valve, and / or a third valve;

[0032] The first valve is provided at an air inlet of the flow mixing device and is used to adjust the flow rate of the gas to be dried;

[0033] The second valve is provided between the other air inlet of the flow mixing device and the air outlet of the regeneration space, and is used to adjust the flow rate of the wet regeneration gas;

[0034] The third valve is provided between the gas outlet of the flow mixing device and the gas inlet of the drying space, and is used to adjust the flow rate of the mixed gas;

[0035] The controller is specifically used for:

[0036] Based on the detection results of the first temperature sensor and the second temperature sensor, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas are regulated by using the first valve, the second valve and / or the third valve.

[0037] In some embodiments, the gas drying system further includes a heating device, the gas outlet of the heating device is connected to the gas inlet of the regeneration space, and the heating device is used to heat the regeneration gas; the controller is specifically used to:

[0038] Based on the detection results of the first temperature sensor and the detection results of the second temperature sensor, the power of the heating device is regulated to regulate the intake air temperature of the regeneration space.

[0039] A second aspect of the present application provides a gas compression system, comprising a compressor unit and the gas drying system as described above; the gas outlet of the compressor unit is connected to the gas inlet of the gas drying system, and the compressor unit is used to prepare compressed gas and transport the compressed gas as gas to be dried to the gas drying system.

[0040] The gas drying system of the present embodiment is equipped with a first temperature sensor and a second temperature sensor at different locations within the regeneration space. These first and second temperature sensors are capable of detecting the temperature at different locations within the regeneration space, thereby preventing significant deviations between the detection results and the actual temperature due to issues with the temperature sensors themselves or uneven distribution of the regeneration airflow. Based on the detection results of the first and second temperature sensors, it is possible to accurately determine whether the desiccant regeneration process meets design expectations, allowing for precise monitoring of the desiccant's regeneration status, thereby balancing desiccant regeneration effectiveness with system energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG1 is a schematic diagram of the three-dimensional structure of a drying device according to an embodiment of the present application;

[0042] FIG2 is a schematic top view of the drying device according to an embodiment of the present application;

[0043] FIG3 is a side view schematic diagram of the drying device according to an embodiment of the present application;

[0044] FIG4 is a schematic diagram of a gas compression system according to an embodiment of the present application.

[0045] Description of reference numerals:

[0046] 10-gas drying system; 11-drying device; 12-housing; 13-drying space; 14-regeneration space; 15-first temperature sensor; 16-second temperature sensor; 17-third temperature sensor; 18-mixing device; 19-fourth-stage cooling device;

[0047] 20-compressor unit; 21-first-stage compressor; 22-first-stage cooling device; 23-second-stage compressor; 24-second-stage cooling device; 25-third-stage compressor; 26-heat exchanger; 27-third-stage cooling device. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present application, the present application is described in detail below with reference to the accompanying drawings and specific implementation methods.

[0049] An embodiment of the present application provides a gas drying system. Referring to FIG. 1 to FIG. 4 , the gas drying system 10 of the embodiment of the present application may specifically include a drying device 11 , a first temperature sensor 15 , and a second temperature sensor 16 .

[0050] The drying device 11 includes a housing 12 and a rotating drum (not shown). The housing 12 defines a drying space 13 and a regeneration space 14. The rotating drum contains a desiccant and is rotatably disposed within the housing 12 to drive the desiccant through the drying space 13 and the regeneration space 14.

[0051] The first temperature sensor 15 and the second temperature sensor 16 are disposed at different positions of the regeneration space 14 . The first temperature sensor 15 and the second temperature sensor 16 are respectively used to detect temperatures at different positions of the regeneration space 14 .

[0052] Specifically, the housing 12 has an inner cavity, a portion of which forms the drying space 13, and another portion of which forms the regeneration space 14. The rotary drum is rotatably disposed within the inner cavity, and during rotation, the rotary drum drives the desiccant through the drying space 13 and the regeneration space 14. The drying space 13 is used to dry the gas to be dried using the desiccant within the rotary drum. The regeneration space 14 is used to regenerate the desiccant within the rotary drum using the regeneration gas.

[0053] It should also be noted that the inner cavity includes the drying space 13 and the regeneration space 14, but the inner cavity is not limited to only including the drying space 13 and the regeneration space 14. The inner cavity may also include, for example, a cooling space for cooling the desiccant and / or a heating space for heating the desiccant.

[0054] Optionally, the drum can be connected to a drive device via a transmission mechanism, and the drive device can be configured to drive the drum to rotate via the transmission mechanism. For example, the drum can be connected to a motor transmission arranged on the top, bottom or side of the housing 12 via the transmission mechanism.

[0055] Optionally, the first temperature sensor 15 and the second temperature sensor 16 may be fixedly disposed in the regeneration space 14. For example, the first temperature sensor 15 may be disposed in the regeneration space 14 near an end or periphery of the rotating drum. Similarly, the second temperature sensor 16 may also be disposed in the regeneration space 14 near an end or periphery of the rotating drum.

[0056] Optionally, the first temperature sensor 15 and the second temperature sensor 16 may also be disposed on the rotating drum. For example, a plurality of first temperature sensors 15 may be disposed circumferentially within the rotating drum, and a plurality of second temperature sensors 16 may be disposed circumferentially within the rotating drum. The plurality of first temperature sensors 15 and the plurality of second temperature sensors 16 are configured such that at least one first temperature sensor 15 and at least one second temperature sensor 16 are located within the regeneration space 14 during rotation of the rotating drum.

[0057] Optionally, the regeneration space 14 is not limited to including two temperature sensors, but may also include three, four or more temperature sensors. When more than three temperature sensors are provided in the regeneration space 14, at least one temperature sensor other than the first temperature sensor 15 and the second temperature sensor 16 may be provided at a position different from the first temperature sensor 15 and the second temperature sensor 16, so as to be able to detect the temperature of more points in the regeneration space 14. Alternatively, the at least one other temperature sensor may also be provided at the same position as the first temperature sensor 15 or the second temperature sensor 16. For example, in an application scenario where the accuracy of the temperature detection result is required to be high, the at least one temperature sensor may be used as a backup sensor for the first temperature sensor 15 or the second temperature sensor 16 at the same position, forming a detection mode with one master and one backup. The temperature detection result at the same position is corrected by the detection results of the master and backup sensors to improve the accuracy of the temperature detection result and to improve the robustness of the system.

[0058] It is understood that the first temperature sensor 15 and the second temperature sensor 16 may be various types of temperature sensors, and the types of the first temperature sensor 15 and the second temperature sensor 16 are not limited herein, as long as they can detect the temperature in the regeneration space 14. For example, the first temperature sensor 15 and the second temperature sensor 16 include, but are not limited to, thermocouple temperature sensors, thermal resistance temperature sensors, infrared temperature sensors, and the like.

[0059] The desiccant regeneration process typically involves flowing high-temperature regeneration gas through the wet desiccant, causing the moisture to absorb heat and convert into water vapor, which is then carried away by the regeneration airflow. This removes moisture from the desiccant and achieves desiccant regeneration. Based on this, the inventors have experimentally discovered that the temperature of the regeneration space 14 is closely correlated with the moisture content of the desiccant. The higher the moisture content of the desiccant, the greater the amount of heat absorbed and the lower the temperature of the regeneration space 14. Conversely, the lower the moisture content of the desiccant, the less heat absorbed and the higher the temperature of the regeneration space 14. Furthermore, the moisture content of the desiccant directly reflects the desiccant's regeneration status, and by monitoring the temperature of the regeneration space 14, the desiccant's regeneration status can be monitored.

[0060] The gas drying system 10 of the present embodiment is provided with a first temperature sensor 15 and a second temperature sensor 16 at different locations within the regeneration space 14. These first and second temperature sensors 15, 16 are capable of detecting the temperature at different locations within the regeneration space 14, thereby preventing significant deviations between the detection results and the actual temperature due to issues with the temperature sensors themselves or uneven distribution of the regeneration airflow. Based on the detection results of the first and second temperature sensors 15, 16, it is possible to accurately determine whether the desiccant regeneration process meets design expectations, thereby precisely monitoring the desiccant regeneration status and achieving a balanced balance between desiccant regeneration effectiveness and system energy consumption.

[0061] In some embodiments, the first temperature sensor 15 and the second temperature sensor 16 are respectively disposed at different positions in a first direction and / or at different positions in a second direction of the regeneration space 14. The first direction is the rotation direction of the drum, and the second direction is the rotation centerline direction of the drum.

[0062] Desiccant at different positions in the first direction enters the regeneration space 14 at different times, and desiccant at different positions in the second direction comes into contact with the regeneration gas flow at different times. The first temperature sensor 15 and the second temperature sensor 16 are respectively arranged at different positions in the regeneration space 14 in the first direction and / or at different positions in the second direction. This allows monitoring of the regeneration status of desiccant that enters the regeneration space 14 and / or the regeneration status of desiccant that comes into contact with the regeneration gas, thereby enabling precise monitoring of the regeneration status of desiccant at different positions.

[0063] Optionally, the positions of the first temperature sensor 15 and the second temperature sensor 16 in the first direction and the second direction may be different, as shown in FIG1 .

[0064] Optionally, the first temperature sensor 15 and the second temperature sensor 16 may be located at different positions in the first direction, but may be located at the same position in the second direction.

[0065] Optionally, the first temperature sensor 15 and the second temperature sensor 16 may be located at the same position in the first direction, but may be located at different positions in the second direction.

[0066] In some embodiments, the drying space 13 is formed by the inner cavity of the housing 12 within a first central angle range, and the regeneration space 14 is formed by the inner cavity of the housing 12 within a second central angle range. The vertices of the first and second central angles are located on the rotational centerline of the drum. This allows desiccant within the same central angle range on the drum to be simultaneously transferred into the drying space 13 or regeneration space 14.

[0067] Alternatively, the housing 12 may be cylindrical. Based on this, the drying space 13 is formed by an inner cavity located within a first central angle range and having a fan-shaped cross section, as indicated by ∠A in Figure 2 . The regeneration space 14 is formed by an inner cavity located within a second central angle range and having a fan-shaped cross section, as indicated by ∠B in Figure 2 . Of course, the housing 12 is not limited to a cylindrical shape; it may also be a polygonal prism or other regular or irregular shapes.

[0068] In actual application, the specific angle ranges of the first central angle range and the second central angle range, as well as the proportional relationship therebetween, are set based on design parameters such as the rated drying flow rate of the gas drying system 10. The specific angles and proportional relationship between the first central angle range and the second central angle range are not limited herein.

[0069] Optionally, the regeneration space 14 and the drying space 13 may be adjacent to each other in the first direction. For example, the head end of the regeneration space 14 may be connected to the end of the drying space 13, and the end of the regeneration space 14 may be connected to the head end of the drying space 13. The head end of the regeneration space 14 is the end through which the wet desiccant is transferred during the rotation of the drum, and the end of the regeneration space 14 is the end through which the regenerated desiccant is transferred out during the rotation of the drum. Similarly, the head end of the drying space 13 is the end through which the regenerated desiccant is transferred during the rotation of the drum, and the end of the drying space 13 is the end through which the wet desiccant is transferred out during the rotation of the drum.

[0070] Optionally, the regeneration space 14 and the drying space 13 may be connected by another space. For example, one or more cooling spaces for cooling the desiccant may be provided between the end of the regeneration space 14 and the beginning of the drying space 13. For another example, one or more preheating and regeneration spaces 14 may be provided between the beginning of the regeneration space 14 and the end of the drying space 13. Optionally, one or more temperature sensors may be provided in the cooling space and / or the preheating and regeneration space 14 to further enhance monitoring of the desiccant regeneration status.

[0071] In some embodiments, the first temperature sensor 15 and the second temperature sensor 16 are located on either side of a target plane defined by the bisector of the second central angle and the centerline of rotation of the drum. Thus, one of the first temperature sensor 15 and the second temperature sensor 16 is located near the beginning of the regeneration space 14, and the other is located near the end of the regeneration space 14. This allows monitoring of the regeneration status of desiccant that has recently entered the regeneration space 14, as well as monitoring the regeneration status of desiccant that is about to leave the regeneration space 14, thereby enabling precise monitoring of the desiccant's regeneration status.

[0072] For example, the second central angle may be represented by ∠B in FIG1 , the angle bisector of the second central angle may be represented by line C in FIG1 , and the rotation centerline of the drum may be represented by line D in FIG1 . Based on this, the target plane is the plane defined by lines C and D.

[0073] In some embodiments, a first angle is defined between the first temperature sensor 15 and the target plane, and a second angle is defined between the second temperature sensor 16 and the target plane. The vertices of the first angle and the second angle are both located on the rotation centerline of the drum, and a ratio of the first angle to the second angle is between 0.5 and 1.

[0074] The apex of the first angle and the top of the second angle are both located on the rotation centerline of the drum. The first angle and the second angle are actually central angles. The ratio between the first angle and the second angle can also be understood as the ratio of the central angle between the first temperature sensor 15 and the target plane to the central angle between the second temperature sensor 16 and the target plane.

[0075] For example, taking line C in Figure 2 as an example, which represents the angle bisector of the second central angle, the first angle can be shown as ∠E in Figure 2, and the second angle can be shown as ∠F in Figure 2. The angle ratio of the first angle to the second angle is also the angle ratio between ∠E and ∠F.

[0076] Within the above ratio range, the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16 have a high reference value, which is conducive to accurately determining the regeneration status of the desiccant.

[0077] Optionally, the ratio of the first angle to the second angle may be 1. In this way, the first temperature sensor 15 and the second temperature sensor 16 are symmetrically arranged on opposite sides of the target plane.

[0078] In some embodiments, a third angle is defined between the first temperature sensor 15 and the second temperature sensor 16. The vertex of the third angle is located on the centerline of rotation of the drum, and the angle of the third angle ranges from 50° to 80°. The third angle is actually the central angle between the first temperature sensor 15 and the second temperature sensor 16, as specifically shown by ∠G in Figure 2. Thus, the detection results of the first temperature sensor 15 and the second temperature sensor 16 can represent the regeneration status of the desiccant in different areas of the regeneration space 14, thereby determining the overall regeneration status of the desiccant in the regeneration space 14.

[0079] It is understood that the third angle is actually the sum of the first and second angles. Therefore, when the third angle is 50° to 80°, the first angle is approximately 16° to 40°, the second angle is approximately 34° to 58°, and the ratio of the first and second angles is 0.5 to 1.

[0080] For example, when the third angle is 50° and the ratio of the first angle to the second angle is 0.5, the first angle is approximately 16° and the second angle is approximately 34°. When the third angle is 80° and the ratio of the first angle to the second angle is 1, both the first angle and the second angle are 40°.

[0081] In some embodiments, the distance between the first temperature sensor 15 and the second temperature sensor 16 in the second direction is 0 cm to 15 cm. Optionally, the distance between the first temperature sensor 15 and the second temperature sensor 16 in the second direction can be represented by H as shown in Figure 3. Within this distance range, the detection results of the first temperature sensor 15 and the second temperature sensor 16 can well reflect the temperature conditions at different locations in the regeneration space 14 in the second direction, and the detection results of the first temperature sensor 15 and the second temperature sensor 16 have high reference value, thereby achieving the purpose of accurately monitoring the regeneration status of the desiccant.

[0082] In some embodiments, the housing 12 is provided with a plurality of detection holes (not shown) extending through the regeneration space 14. The first temperature sensor 15 and the second temperature sensor 16 extend from one of the detection holes, respectively, between the inner periphery of the housing 12 and the outer periphery of the rotating drum. This not only facilitates the placement of the first and second temperature sensors 15, 16, but also provides for a variety of combinations of the first and second temperature sensors 15, 16. In actual applications, by adjusting the detection holes into which the first and / or second temperature sensors 15, 16 are connected, the connection position of the first and / or second temperature sensors 15, 16 can be adjusted, thereby enhancing system flexibility.

[0083] In some embodiments, the gas drying system 10 may further include a controller (not shown) configured to control the workload of the drying device 11 based on the detection results of the first temperature sensor 15 and the second temperature sensor 16. In this manner, the controller can automatically control the gas drying system 10.

[0084] Optionally, the controller may be configured to include a processor and a storage medium storing a computer program. Specifically, the controller includes at least a processing component, RAM, ROM, a communication interface, a memory, and an I / O interface. The processing component, RAM, ROM, communication interface, memory, and I / O interface communicate via a bus. The processing component may be a CPU, GPU, or other chip with computing capabilities. The memory contains various computer programs, such as an operating system and application programs, for execution by the processor component, as well as the data required to execute the computer programs.

[0085] Furthermore, during the operation of the gas drying system 10, any data that requires local storage can be stored in the memory. The I / O interface comprises a serial interface such as USB, IEEE, or RS-C, a parallel interface such as SCSI, IDE, or IEEE, and an analog signal interface comprising a D / A converter and an A / D converter. Input devices such as a keyboard, mouse, touch screen, or other control buttons are connected to the I / O interface, allowing the user to directly input data into the controller using these input devices.

[0086] Additionally, the I / O interface can be connected to a display device with display capabilities, such as an LCD screen, touch screen, or LED display. The controller can output processed data to the display device as graphical display data, such as temperature, pressure, and flow rate. A communication interface can be an interface that uses any currently known communication protocol. This communication interface communicates with the outside world via a network. The controller can connect to a network using a specific communication protocol through the communication interface and transmit data to any device connected to the network.

[0087] Optionally, the workload status of the drying device 11 can be determined based on the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16. The workload status of the drying device 11 can be used to characterize the relationship between the demand for regeneration gas by the wet desiccant and the supply of regeneration gas. For example, when the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16 indicate that the temperature of the regeneration space 14 is high, it indicates that the supply of regeneration gas is greater than the demand, and the workload is low. When the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16 indicate that the temperature of the regeneration space 14 is high, it indicates that the supply of regeneration gas is less than the demand, and the workload is high.

[0088] Based on the determination of the workload state of the drying device 11, the workload of the drying device 11 can be controlled by adjusting the operating state of the gas drying system 10. Adjusting the operating state of the gas drying system 10 includes, but is not limited to, increasing the workload of the drying device 11, decreasing the workload of the drying device 11, adjusting the motion state of the drum, and adjusting gas parameters.

[0089] The following describes in detail the specific process and principles for regulating the workload of the drying device 11, using specific embodiments. However, this should not be construed as being limited to regulating the workload of the drying device 11 in the following manner. In practice, any measure capable of regulating the supply and demand of regeneration gas in the gas drying system 10 is considered to be within the scope of protection of this application.

[0090] In some embodiments, the controller is specifically used to: control the rotation speed of the drum based on the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16. Specifically, the workload status of the drying device 11 can be determined based on the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16. When the workload status of the drying device 11 indicates that the workload of the drying device 11 is low, the rotation speed of the drum can be reduced, thereby extending the residence time of the desiccant in the drying space 13, increasing the moisture content of the desiccant, and increasing the demand for regeneration gas by the desiccant, thereby achieving a balance between supply and demand of regeneration gas. When the working status of the drying device 11 indicates that the workload of the drying device 11 is high, the rotation speed of the drum can be increased, thereby shortening the residence time of the desiccant in the drying space 13, reducing the moisture content of the desiccant, and reducing the demand for regeneration gas by the desiccant, thereby achieving a balance between supply and demand of regeneration gas. Adjusting the rotation speed of the drum can achieve the purpose of regulating the workload state of the drying device 11 without affecting the drying capacity of the gas drying system 10 for the gas to be dried, which can not only meet the gas drying requirements but also control the stable operation of the gas drying system 10.

[0091] In some embodiments, the controller is specifically configured to:

[0092] determining an equivalent temperature capable of identifying a temperature state of the regeneration space 14 based on a detection result of the first temperature sensor 15 and a detection result of the second temperature sensor 16;

[0093] Based on the equivalent temperature, the rotation speed of the drum is controlled.

[0094] Optionally, the detection result of the first temperature sensor 15 can be recorded as the first temperature value, and the detection result of the second temperature sensor 16 can be recorded as the second temperature value. On this basis, the first temperature value and the second temperature value can be statistically calculated to determine the equivalent temperature. For example, the arithmetic mean of the first temperature value and the second temperature value can be used as the equivalent temperature. For another example, the weighted average of the first temperature value and the second temperature value can be used as the equivalent temperature. Of course, other statistical calculation results of the first temperature value and the second temperature value can also be used as the equivalent temperature. This not only helps to simplify the control logic, but also facilitates precise control of the gas drying system 10.

[0095] In some embodiments, the controller is specifically configured to:

[0096] When the equivalent temperature falls within a first temperature range, the rotation speed of the drum is reduced; the first temperature range is used to indicate that the supply of regeneration gas in the regeneration space 14 is greater than the demand for regeneration gas for desiccant regeneration;

[0097] When the equivalent temperature is within the second temperature range, the rotation speed of the drum is increased; the second temperature range is used to indicate that the supply of regeneration gas in the regeneration space 14 is less than the demand for regeneration gas for desiccant regeneration.

[0098] Alternatively, the supply and demand relationship of regeneration gas at different temperatures in the regeneration space 14 can be determined in advance based on experimental or empirical data, and a first temperature range indicating that the regeneration gas supply exceeds the demand and a second temperature range indicating that the regeneration gas supply exceeds the demand can be selected accordingly. Once the equivalent temperatures have been determined, the controller can compare the equivalent temperatures with the first and second temperature ranges to control the drum speed accordingly. This provides simple control logic and ease of implementation.

[0099] Optionally, a correlation between the first temperature range and the second temperature range and the speed adjustment amount of the drum can be pre-established. When it is determined that the equivalent temperature is within the first temperature range or the second temperature range, the speed of the drum can be adjusted based on the correlation.

[0100] It is understandable that in actual application, the temperature range is not limited to the first temperature range and the second temperature range. Three, four or more temperature ranges can be set according to actual needs to achieve step-by-step control of the drum.

[0101] For example, a third temperature range may be set above the first temperature range. The third temperature range may be used to indicate that the supply of regeneration gas in the regeneration space 14 is much greater than the demand. When the equivalent temperature falls within the third temperature range, the rotation speed of the drum may be significantly reduced.

[0102] For example, a fourth temperature range can be set below the second temperature range. The fourth temperature range can be used to indicate that the supply of regeneration gas is much less than the demand. When the equivalent temperature falls within the fourth temperature range, the drum speed can be significantly increased.

[0103] As shown in FIG4 , in some embodiments, the gas drying system 10 further includes a flow mixing device 18. One air inlet of the flow mixing device 18 is used to receive the gas to be dried; another air inlet of the flow mixing device 18 is connected to the air outlet of the regeneration space 14 for receiving wet regeneration gas from the regeneration space 14; the air outlet of the flow mixing device 18 is connected to the air inlet of the drying space 13, and the flow mixing device 18 is used to deliver a mixed gas formed by mixing the gas to be dried and the wet regeneration gas to the drying space 13.

[0104] The controller is specifically configured to control the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas based on the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16. Adjusting the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas can adjust the moisture content of the mixed gas flowing into the drying space 13, thereby adjusting the moisture content of the wet desiccant transferred to the regeneration space 14. The controller can also adjust the flow rate of the regeneration gas, thereby directly and quickly adjusting the supply and demand of the regeneration gas.

[0105] In some embodiments, the gas drying system 10 further includes a third temperature sensor 17 , and the third temperature sensor 17 is used to detect the intake air temperature of the drying space 13 .

[0106] The controller is specifically configured to control the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas based on the detection results of the first temperature sensor 15 , the detection results of the second temperature sensor 16 and the detection results of the third temperature sensor 17 .

[0107] The inlet air temperature of the drying space 13 can, to a certain extent, indicate the load of the gas to be dried. Specifically, a higher inlet air temperature of the drying space 13 indicates a higher load of the gas to be dried. A lower inlet air temperature of the drying space 13 indicates a lower load of the gas to be dried.

[0108] On this basis, based on the detection results of the first temperature sensor 15, the detection results of the second temperature sensor 16 and the detection results of the third temperature sensor 17, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas is controlled, which can not only achieve a balance between supply and demand of the regeneration gas, but also ensure the drying effect of the gas to be dried.

[0109] In some embodiments, the gas drying system 10 further includes a first valve, a second valve, and / or a third valve. The first valve is disposed at an air inlet of the flow mixing device 18 and is used to adjust the flow rate of the gas to be dried. The second valve is disposed between another air inlet of the flow mixing device 18 and the air outlet of the regeneration space 14 and is used to adjust the flow rate of the wet regeneration gas. The third valve is disposed between the air outlet of the flow mixing device 18 and the air inlet of the drying space 13 and is used to adjust the flow rate of the mixed gas.

[0110] The controller is specifically used to: based on the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16, use the first valve, the second valve and / or the third valve to regulate the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas.

[0111] Optionally, the gas drying system 10 may include a first valve, through which an air inlet of the flow mixing device 18 may be connected to a gas source of the gas to be dried. The controller may adjust the opening of the first valve based on the detection results of the first temperature sensor 15 and the second temperature sensor 16 to adjust the flow rate of the gas to be dried, thereby adjusting the mixing ratio of the gas to be dried and the wet regeneration gas.

[0112] Optionally, the gas drying system 10 may also include a second valve, through which the other gas inlet of the flow mixing device 18 may be connected to the gas outlet of the regeneration space 14. The controller may adjust the flow rate of the wet regeneration gas by adjusting the opening of the second valve, thereby adjusting the flow rate of the regeneration gas flowing into the regeneration space 14 and the mixing ratio of the gas to be dried and the wet regeneration gas.

[0113] Similarly, the gas drying system 10 may also include a third valve. Alternatively, the gas drying system 10 may also include any two of the first valve, the second valve, and the third valve. Alternatively, the gas drying system 10 may include the first valve, the second valve, and the third valve simultaneously.

[0114] Optionally, the flow mixing device 18 may include a venturi tube. One air inlet of the venturi tube may be connected to a gas source for the gas to be dried, the other air inlet of the venturi tube may be connected to the air outlet of the regeneration space 14, and the air outlet of the venturi tube may be connected to the air inlet of the drying space 13. The venturi tube can extract wet regeneration gas, thereby providing power for the regeneration gas flow, which helps simplify the system structure and reduce production costs.

[0115] Optionally, the flow mixing device 18 may also include a three-way pipe structure, one air inlet of which may be connected to a gas source of the gas to be dried, the other air inlet of which may be connected to the air outlet of the regeneration space 14, and the air outlet of which may be connected to the air inlet of the drying space 13. The three-way pipe structure is easy to implement and has a simple structure. In conjunction with at least one of the first valve, the second valve, and the third valve, it can also effectively achieve the purpose of regulating the flow rate of the gas to be dried and / or the wet regeneration gas.

[0116] It should be noted that the mixing flow device 18 can have multiple implementation forms. When different implementation forms are adopted, different adjustments can be used to control the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas. It should not be understood that the mixing flow device 18 is limited to the specific implementation forms in the above examples.

[0117] In some embodiments, the gas drying system 10 further includes a heating device, the gas outlet of the heating device is connected to the gas inlet of the regeneration space 14, and the heating device is used to heat the regeneration gas.

[0118] The controller is specifically configured to regulate the power of the heating device based on the detection results of the first temperature sensor 15 and the detection results of the second temperature sensor 16 , so as to regulate the intake air temperature of the regeneration space 14 .

[0119] Adjusting the regeneration gas inlet temperature can adjust the drying capacity of the regeneration gas per unit flow rate and achieve the goal of balancing the supply and demand of regeneration gas. Specifically, if the moisture content of the desiccant remains unchanged, the higher the regeneration gas inlet temperature, the smaller the regeneration gas flow rate required per unit mass of desiccant. The lower the regeneration gas inlet temperature, the larger the regeneration gas flow rate required per unit mass of desiccant.

[0120] Optionally, the heating device may be a dedicated heater between the gas source of the regeneration gas and the regeneration space 14. For example, an electric heater, a fuel oil heater, a gas heater, etc.

[0121] Optionally, the heating device can also be formed by, for example, a heat exchanger 26. For example, the cold side inlet of the heat exchanger 26 can be connected to an outlet of the drying space 13, so that at least part of the dried gas can flow into the heat exchanger 26 for use as regeneration gas. The cold side outlet of the heat exchanger 26 can be connected to the air inlet of the regeneration space 14. The hot side inlet of the heat exchanger 26 can be connected to the gas source of the gas to be dried, and the hot side outlet of the heat exchanger 26 can be connected to the air inlet of the drying space 13, as shown in Figure 4. By adjusting parameters such as the flow rate, flow velocity, and residence time on the cold side and / or hot side of the heat exchanger 26, the heat exchange efficiency can be adjusted, thereby achieving the purpose of adjusting the degree of heating of the regeneration gas by the heat exchanger 26.

[0122] Optionally, the heating device may include a single heat exchanger 26 or multiple heat exchangers 26. For example, if the source of the gas to be dried is a compressor unit 20, the compressor unit 20 may include multiple stages of compressors connected in series, as shown in Figure 4. A heat exchanger 26 may be provided between any two adjacent stages of compressors to heat the regenerated gas. Optionally, when the heating device includes multiple heat exchangers 26, the multiple heat exchangers 26 may be connected in parallel or in series.

[0123] The embodiment of the present application further provides a gas compression system. As shown in FIG4 , the gas compression system of the embodiment of the present application may include a compressor unit 20 and any of the aforementioned gas drying systems 10 .

[0124] The gas outlet of the compressor unit 20 is connected to the gas inlet of the gas drying system 10 . The compressor unit 20 is used to prepare compressed gas and transport the compressed gas to the gas drying system 10 as the gas to be dried.

[0125] Since the gas drying system 10 can accurately monitor the regeneration status of the desiccant and can balance the desiccant regeneration effect and system energy consumption, a gas compression system using the gas drying system 10 can not only ensure the drying effect of the compressed gas but also help reduce system energy consumption.

[0126] Optionally, the compressor unit 20 may include a single compressor or multiple compressors. In the case where the compressor unit 20 includes multiple compressors, the multiple compressors may be connected in parallel. Alternatively, they may be connected in series as shown in FIG4 , thereby forming a compressor unit 20 capable of performing multi-stage compression on the gas.

[0127] If the compressor unit 20 includes multiple compressors, cooling devices may be provided between adjacent compressors to cool the high-temperature compressed gas. As shown in FIG4 , a primary cooling device 22 may be provided between the primary compressor 21 and the secondary compressor 23. A secondary cooling device 24 may be provided between the secondary compressor 23 and the tertiary compressor 25. A tertiary cooling device 27 may be provided between the tertiary compressor 25 and the flow mixing device 18. Furthermore, to control the temperature of the mixed gas exiting the flow mixing device 18, a quaternary cooling device 19 may be provided between the flow mixing device 18 and the drying device 11.

[0128] It is understood that each stage of the cooling device can be formed by a dedicated cooler that uses a cooling medium as a heat source. For example, the dedicated cooler can use a cooling medium such as cold air, cooling water, or cooling oil as a heat source to cool the high-temperature compressed gas. Each stage of the cooling device can also be formed by the aforementioned heat exchanger 26. In fact, the heat exchanger 26 in Figure 4 also serves as a cooling device.

[0129] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A gas drying system, characterized in that: include: The drying device comprises a shell and a drum, wherein the shell has a drying space and a regeneration space, the drum is provided with a desiccant, and the drum is rotatably arranged in the shell to drive the desiccant to pass through the drying space and the regeneration space successively; The first temperature sensor and the second temperature sensor are arranged at different positions of the regeneration space, and the first temperature sensor and the second temperature sensor are respectively used to detect the temperatures at different positions of the regeneration space.

2. The gas drying system according to claim 1, characterized in that: The first temperature sensor and the second temperature sensor are respectively arranged at different positions of the regeneration space in the first direction and / or at different positions in the second direction; The first direction is the rotation direction of the drum, and the second direction is the rotation centerline direction of the drum.

3. The gas drying system according to claim 2, characterized in that: The drying space is formed by the inner cavity of the shell located within the first central angle range, and the regeneration space is formed by the inner cavity of the shell located within the second central angle range; Wherein, the vertex of the first central angle and the vertex of the second central angle are located on the rotation center line of the drum.

4. The gas drying system according to claim 3, characterized in that: The first temperature sensor and the second temperature sensor are respectively located on two sides of a target plane, and the target plane is a plane defined by an angle bisector of the second central angle and a rotation centerline of the drum.

5. The gas drying system according to claim 4, characterized in that: There is a first angle between the first temperature sensor and the target plane, and there is a second angle between the second temperature sensor and the target plane. The vertices of the first angle and the second angle are both located on the rotation center line of the drum, and the ratio of the first angle to the second angle is 0.5 to 1.

6. The gas drying system according to claim 4, characterized in that: There is a third angle between the first temperature sensor and the second temperature sensor, the vertex of the third angle is located on the rotation center line of the drum, and the angle of the third angle is 50° to 80°.

7. The gas drying system according to claim 2, characterized in that: The distance between the first temperature sensor and the second temperature sensor in the second direction is 0 cm to 15 cm.

8. The gas drying system according to claim 2, characterized in that: The shell is provided with a plurality of detection holes penetrating into the regeneration space, and the first temperature sensor and the second temperature sensor extend from one of the detection holes to between the inner periphery of the shell and the outer periphery of the drum.

9. The gas drying system according to any one of claims 1 to 8, characterized in that: Also includes: A controller is used to control the workload of the drying device based on the detection result of the first temperature sensor and the detection result of the second temperature sensor.

10. The gas drying system according to claim 9, characterized in that: The controller is specifically used for: The rotation speed of the drum is controlled based on the detection result of the first temperature sensor and the detection result of the second temperature sensor.

11. The gas drying system according to claim 10, characterized in that: The controller is specifically used for: determining an equivalent temperature capable of identifying a temperature state of the regeneration space based on a detection result of the first temperature sensor and a detection result of the second temperature sensor; Based on the equivalent temperature, the rotation speed of the drum is controlled.

12. The gas drying system according to claim 11, characterized in that The controller is specifically used for: When the equivalent temperature is within the first temperature range, the rotation speed of the drum is reduced; the first temperature range is used to indicate that the supply of the regeneration gas in the regeneration space is greater than the demand for the regeneration gas for the desiccant regeneration; When the equivalent temperature is within a second temperature range, the rotation speed of the drum is increased; the second temperature range is used to indicate that the supply of regeneration gas in the regeneration space is less than the demand for regeneration gas for desiccant regeneration.

13. The gas drying system according to claim 9, characterized in that: The gas drying system further comprises a flow mixing device, one air inlet of the flow mixing device is used to receive the gas to be dried; the other air inlet of the flow mixing device is connected to the air outlet of the regeneration space, and is used to receive the wet regeneration gas from the regeneration space; the air outlet of the flow mixing device is connected to the air inlet of the drying space, and the flow mixing device is used to transport the mixed gas formed by mixing the gas to be dried and the wet regeneration gas to the drying space; the controller is specifically used to: Based on the detection result of the first temperature sensor and the detection result of the second temperature sensor, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas is controlled.

14. The gas drying system according to claim 13, characterized in that: The gas drying system further includes a third temperature sensor, which is used to detect the inlet air temperature of the drying space; the controller is specifically used to: Based on the detection result of the first temperature sensor, the detection result of the second temperature sensor, and the detection result of the third temperature sensor, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas is controlled.

15. The gas drying system according to claim 13, characterized in that: The gas drying system further comprises a first valve, a second valve and / or a third valve; The first valve is disposed at an air inlet of the flow mixing device and is used to adjust the flow rate of the gas to be dried; The second valve is arranged between another air inlet of the mixing flow device and the air outlet of the regeneration space, and is used to adjust the flow rate of the wet regeneration gas; The third valve is arranged between the gas outlet of the flow mixing device and the gas inlet of the drying space, and is used to adjust the flow rate of the mixed gas; The controller is specifically used for: Based on the detection results of the first temperature sensor and the detection results of the second temperature sensor, the flow rate of the gas to be dried and / or the flow rate of the wet regeneration gas are regulated by using the first valve, the second valve and / or the third valve.

16. The gas drying system according to claim 9, characterized in that: The gas drying system further comprises a heating device, the gas outlet of the heating device is connected to the gas inlet of the regeneration space, and the heating device is used to heat the regeneration gas; the controller is specifically used to: Based on the detection result of the first temperature sensor and the detection result of the second temperature sensor, the power of the heating device is regulated to regulate the intake air temperature of the regeneration space.

17. A gas compression system, characterized in that: It comprises a compressor unit and a gas drying system as described in any one of claims 1 to 16; the gas outlet of the compressor unit is connected to the gas inlet of the gas drying system, and the compressor unit is used to prepare compressed gas and transport the compressed gas to the gas drying system as gas to be dried.

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