CN-116860020-B - Temperature difference data acquisition and gas flow regulation method for air inlet and outlet of dryer

CN116860020BCN 116860020 BCN116860020 BCN 116860020BCN-116860020-B

Abstract

The invention discloses a temperature difference data acquisition and gas flow regulation method for an air inlet and an air outlet of a dryer, which is characterized in that a temperature sensor is used for continuously collecting temperature data of compressed air at the inlet and the outlet to obtain an air temperature difference value, and a regulation system for regulating the inlet flow of the compressed air according to the temperature difference value is used for improving the water removal rate and the treatment capacity of the compressed air. It is characterized by comprising a gas flow regulating device, an air inlet temperature sensor, an air outlet temperature sensor and a control background, and is characterized in that the gas flow regulating device is arranged at an air inlet of a freeze dryer and is used for regulating and controlling the flow of compressed air entering the dryer, the air inlet temperature sensor is arranged at the air inlet of the freeze dryer and used for collecting data of the temperature of compressed air at the air inlet, and the air outlet temperature sensor is arranged at the air outlet of the freeze dryer and used for collecting data of the temperature of the compressed air after drying before heat exchange is carried out at the air outlet.

Inventors

ZHANG XIUQI
TANG LIPING
ZHANG LIHAO
WANG WEN

Assignees

南京天正工业智能科技研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20221101

Claims (10)

1. The temperature difference data acquisition and gas flow regulation system of the air inlet and outlet of the dryer comprises a gas flow regulation device, an air inlet temperature sensor, an air outlet temperature sensor and a control background, and is characterized in that the gas flow regulation device is arranged at the air inlet of the freeze dryer and used for regulating and controlling the compressed air flow entering the dryer, the air inlet temperature sensor is arranged at the air inlet of the freeze dryer and used for collecting data of the temperature of compressed air at the air inlet, the air outlet temperature sensor is arranged at the air outlet of the freeze dryer and used for collecting data of the temperature of the compressed air after drying before heat exchange at the air outlet, the gas flow regulation device and the control background establish signal interaction, the air inlet temperature sensor and the control background establish signal interaction, the air outlet temperature sensor and the control background establish signal interaction, the control background is provided with a signal conversion module and a data processing module, the gas flow regulating device consists of a main body component and a flow regulating component, the main body component consists of a regulating outer cylinder, a first connecting block, a connecting flange, a connecting sleeve, a T-shaped limiting groove, a second connecting block, a gas outlet, a regulating inner cylinder and a gas inlet, the first connecting block is arranged at one end of the regulating outer cylinder, the second connecting block is arranged at the other end of the regulating outer cylinder, the first connecting block is of a cylindrical structure, the second connecting block is of a cylindrical structure, the regulating inner cylinder is arranged in the regulating outer cylinder, one end of the regulating inner cylinder is connected with the first connecting block, the other end of the regulating inner cylinder is connected with the second connecting block, the middle part of the first connecting block is provided with the gas outlet, the gas outlet is communicated with one end of the regulating inner cylinder, the middle part of the second connecting block is provided with the gas inlet, the air inlet is communicated with the other end of the regulating inner cylinder, the first connecting block is provided with a T-shaped limit groove, the connecting sleeve is arranged on the first connecting block, the connecting sleeve is fixedly connected with the first connecting block through a connecting flange, the flow regulating assembly consists of a rotating regulating plate, a rotating connecting part, a rotating limit part, a rotating shaft, a T-shaped sliding block and a rotating motor, the rotating motor is arranged between the regulating outer cylinder and the regulating inner cylinder, the rotating motor is provided with a controller, the controller and a control background establish signal interaction, the rotating shaft is arranged on the rotating motor, one end of the rotating shaft is connected with the rotating motor, the other end passes first linkage block outwards and extends, rotates the connecting portion and arranges in on the rotation regulating plate, rotate the regulating plate and be circular structure, it has the mounting hole to open on the rotation connecting portion, rotate the connecting portion and arrange in on the pivot other end through the mounting hole cover, rotate spacing portion and arrange in on the rotation regulating plate, it is arc structure to rotate spacing portion, it is corresponding with T type spacing groove to rotate spacing portion, and T type slider is arranged in and is rotated spacing portion, T type slider one end is connected with rotation spacing portion, T type slider other end slidable arranges in T type spacing inslot.
2. The temperature difference data acquisition and gas flow regulation system for the air inlet and outlet of the dryer according to claim 1, wherein the regulating outer cylinder is of a cylindrical structure, the diameter of the regulating outer cylinder is gradually reduced from the middle part to the two ends, and the volume of the regulating outer cylinder can be enlarged for placing a fixed rotating motor.
3. The system for acquiring temperature difference data and regulating gas flow of an air inlet and an air outlet of a dryer according to claim 1, wherein the regulating inner cylinder is of a cylindrical structure, and the diameter of the regulating inner cylinder is gradually increased from the middle part to the two ends.
4. The temperature difference data acquisition and gas flow regulation system for the air inlet and outlet of the dryer according to claim 1, wherein the T-shaped limiting groove is close to the air outlet, the cross section of the T-shaped limiting groove is of an arc-shaped structure, the T-shaped sliding block and the rotation regulating plate can be limited, and the rotation regulating plate is prevented from being loosened and separated from the rotating shaft due to wind flow impact.
5. The system for acquiring temperature difference data and regulating and controlling air flow of an air inlet and an air outlet of a dryer according to claim 1, wherein the rotary connecting part is of an arc-shaped structure and can avoid a connecting flange.
6. The system for collecting temperature difference data and regulating the gas flow of the air inlet and outlet of the dryer according to claim 4, wherein the rotation regulating plate is provided with an avoidance part, the rotation regulating plate corresponds to the gas outlet, so that a gap is reserved for gas outlet all the time under the shielding of the rotation regulating plate, a certain air flow is ensured, and meanwhile, the avoidance part can avoid the gas outlet when the rotation regulating plate rotates to regulate the gas flow, and the flow regulating range is enlarged.
7. The system for acquiring temperature difference data and regulating air flow of an air inlet and an air outlet of a dryer according to claim 6, wherein the rotating regulating plate is matched with the air outlet, and the air flow of the air outlet can be regulated by shielding the air outlet to different degrees through rotating the rotating regulating plate.
8. The system for acquiring temperature difference data and regulating air flow of an air inlet and an air outlet of a dryer according to claim 4, wherein the T-shaped limiting groove is matched with the T-shaped sliding block, so that the rotation regulating plate can be limited, and the phenomenon that the air flow cannot be regulated due to the fact that the rotation regulating plate is separated from a rotating shaft in a loosening manner due to wind current impact is prevented.
9. The system for acquiring temperature difference data and regulating air flow of an air inlet and an air outlet of a dryer according to claim 2, wherein the rotating motor is matched with the rotating shaft, can drive the rotating connecting part and the rotating regulating plate to rotate, can shield the air outlet holes to different degrees, and can regulate the air flow of the air outlet holes.
10. A method for acquiring temperature difference data of an air inlet and an air outlet of a dryer and regulating and controlling air flow, referring to the system for acquiring temperature difference data of the air inlet and the air outlet of the dryer and regulating and controlling air flow according to any one of claims 1 to 9, the method is characterized by comprising the following steps: 1) The air flow control device is arranged between the air inlet and the air inlet pipe of the freeze dryer through a connecting flange and a fixing bolt; 2) The method comprises the steps of collecting data of the temperature of compressed air at an air inlet of a freeze dryer in a specified time interval through an air inlet temperature sensor, collecting data of the temperature of the dried compressed air before heat exchange at an air outlet of the freeze dryer through an air outlet temperature sensor, and sending the collected two temperature data to a control background; 3) The signal conversion module in the control background converts the received temperature data into a temperature value and sends the temperature value to the data processing module; 4) A data processing module in the control system receives the two temperature values and then calculates the two temperature values to obtain a temperature difference value between compressed air at the air inlet and the air outlet, and the data processing module compares and analyzes the temperature difference value with a set threshold range; 5) When the temperature difference exceeds a set threshold range, the temperature of the cooled and dried compressed air is too low, the temperature can be guaranteed to rise to a certain range only by increasing the inlet air flow, at the moment, a control background generates a gas flow regulating instruction and sends the gas flow regulating instruction to a controller, the controller controls a rotating motor to rotate, a rotating connecting part and a rotating regulating plate are driven by a rotating shaft to rotate in a direction away from an air outlet hole so as to further open the air outlet hole, the air outlet range of the air outlet hole is enlarged, and the flow of the compressed air at the air inlet is increased; 6) When the temperature difference is smaller than the set threshold range, the temperature of the compressed air after cooling and drying is higher, the cooling and separating dehumidification effect is poor, the air inlet flow is larger, at the moment, the control system generates a gas flow regulating instruction and sends the gas flow regulating instruction to the controller, the controller controls the rotating motor to rotate, the rotating connecting part and the rotating regulating plate are driven by the rotating shaft to rotate towards the direction close to the air outlet hole so as to shield the air outlet hole, the air outlet range of the air outlet hole is reduced, and the flow of the compressed air at the air inlet is reduced.

Description

Temperature difference data acquisition and gas flow regulation method for air inlet and outlet of dryer Technical Field The invention relates to a temperature difference data acquisition and gas flow regulation method for an air inlet and an air outlet of a dryer, in particular to a regulation system which is used for acquiring temperature difference data of the air inlet and the air outlet of a freeze dryer and regulating and controlling compressed air flow according to the temperature difference data, belongs to the technical field of dryers, and particularly is used for continuously acquiring temperature data of compressed air at the inlet and the outlet through a temperature sensor to obtain an air temperature difference value, regulating the inlet flow of the compressed air according to the temperature difference value and ensuring that the temperature of the cooled and dried compressed air rises to a certain range. Background The freeze dryer is a machine which is used for cooling compressed air by forcing the compressed air to pass through an evaporator for heat exchange according to a freeze dehumidification principle, enabling gaseous water in the compressed air to be cooled by equal pressure, condensing the gaseous water into liquid water and discharging the liquid water out of the machine through an automatic drainer, thus obtaining clean and dry compressed air, enabling the dry compressed air to return to a heat exchanger for heat exchange with the compressed air introduced into an air inlet after the compressed air is cooled and separated, enabling the temperature of the dry compressed air to rise, when the compressed air is discharged from the air outlet, the secondary problems of condensation, dripping, rust and the like of the air outlet pipeline are prevented, however, the temperature of the compressed air after cooling and drying cannot be accurately controlled, meanwhile, the compressed air amount introduced into the air inlet is fixed, when the temperature of the compressed air after cooling and drying is too low, the temperature of the compressed air after cooling and drying is not obviously increased after heat exchange, and the secondary problems of condensation, dripping, rust and the like of the air outlet pipeline are still caused to easily occur, so that the normal operation of the freezing dryer is influenced. The publication No. CN209348381U discloses a freeze dryer, which comprises an air storage tank, a freeze dryer and an HC filter, wherein an expansion valve capillary is arranged on the right side of the air storage tank, the left side of the expansion valve capillary is embedded in the air storage tank, the right side of the expansion valve capillary is provided with the HC filter, the HC filter is welded in the expansion valve capillary, the compressed air quantity introduced into the air inlet of the freeze dryer is fixed, and the temperature of the cooled and dried compressed air cannot be accurately controlled. Publication number CN210332205U discloses a freeze dryer equipment, including the freeze dryer, the back fixedly connected with gear motor of freeze dryer inner wall, gear motor's output fixedly connected with disc, the positive top of disc and bottom all swing joint have the link plate, and the compressed air volume of this freeze dryer air intake department is fixed, because the compressed air temperature after the cooling drying can't accurate control, when the compressed air temperature after the cooling drying is too low, it is not obvious after the heat exchange intensifies, still can lead to out the secondary problem such as air-out pipeline appearance dewing, drip, rust easily, influence the normal operating of freeze dryer. Disclosure of Invention In order to improve the situation, the temperature difference data acquisition and gas flow regulation method for the air inlet and outlet of the dryer provided by the invention provides a regulation system which continuously collects the temperature data of compressed air at the inlet and outlet through a temperature sensor to obtain an air temperature difference and regulates the flow of compressed air according to the temperature difference, so that the temperature of the cooled and dried compressed air can be ensured to rise to a certain range, and secondary problems such as dew condensation, water dripping, rust and the like of an air outlet pipeline are prevented. The invention discloses a temperature difference data acquisition and gas flow regulation system of an air inlet and an air outlet of a dryer, which is realized in such a way that the temperature difference data acquisition and gas flow regulation system of the air inlet and the air outlet of the dryer comprises a gas flow regulation device, an air inlet temperature sensor, an air outlet temperature sensor and a control background, It is characterized in that the gas flow regulating device is arranged at the air inlet of the freeze dryer and is