A compressed air purification device

Abstract

The present invention provides a compressed air purification device, which relates to the field of air purification technology, including a purification component and a control system, wherein the purification component is provided with multiple groups, and the purification component includes a tank body and a sewage extraction device, the sewage extraction device is connected to the bottom of the tank body, and the inlet and outlet of the tank body are respectively connected to the air inlet main pipe and the air outlet main pipe, and the input end of the air inlet main pipe and the output end of the air outlet main pipe are both connected to the compressed air main pipe; the present invention connects multiple groups of purification components to the compressed air main pipe through the air inlet main pipe and the air outlet main pipe, and a cyclone separator and a deflection baffle are arranged in the tank body of the purification component, and the impurities such as moisture and oil contained in the compressed air are pre-processed by using centrifugal and deflection separation methods, and then enters the instrument cold dryer for secondary purification, thereby greatly improving the quality of the compressed air, effectively reducing the content of water and oil liquid impurities entering the instrument cold dryer, and enabling it to maintain good adsorption performance for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to a compressed air purification device. Background Art

[0002] An instrument compressed air system compresses air at atmospheric pressure through an air compressor, processes it through a series of post-processing equipment, and then delivers it at a higher pressure to pneumatic instruments, pneumatic valves, and other pneumatic equipment. The system mainly consists of a compressor unit, a pipeline network, compressed air post-processing equipment, and air-using equipment. It can ensure a stable and pure compressed air source for pneumatic equipment. In industrial production, instrument compressed air systems play an irreplaceable role and are widely used in various occasions requiring pneumatic control.

[0003] The instrument compressed air system serves as the air source for driving instrument control components and pneumatic valves, and has high requirements for the air source quality. In actual field use, there is a problem of high water content in the instrument compressed air. Especially in winter when the temperature is low, it is very easy to cause various instrument control components and pneumatic valves to malfunction or refuse to operate, seriously affecting the safe production of the unit. Therefore, the present invention proposes a compressed air purification device to solve the problems existing in the prior art. Summary of the Invention

[0004] In response to the above problems, the present invention proposes a compressed air purification device, which greatly improves the quality of compressed air and effectively reduces the content of water and oil liquid impurities entering the instrument cold dryer. It is of great benefit to the protection of the alumina desiccant in the instrument cold dryer, and can enable it to maintain good adsorption performance for a long time.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a compressed air purification device, including a purification component and a control system, the purification component is provided with multiple groups, and the purification component includes a tank body and a sewage pumping device, the sewage pumping device is connected to the bottom of the tank body, and the inlet and outlet of the tank body are respectively connected to the air inlet main pipe and the air outlet main pipe, the input end of the air inlet main pipe and the output end of the air outlet main pipe are both connected to the compressed air main pipe, and the output end of the compressed air main pipe is connected to the instrument cold dryer, a cyclone separator and a deflection baffle are provided inside the tank body, a sensor group and a flow detector are provided on the compressed air main pipe at the front position of the purification component, the air inlet main pipe and the air outlet main pipe are both provided with isolation doors, and an opening and closing valve is provided on the compressed air main pipe at the position of the purification component;

[0006] The control system has a built-in analysis algorithm for calculating the carrying capacity required to process the current compressed air based on the current compressed air flow and moisture and oil content detected by the sensor group and the flow detector, opening the isolation doors of an appropriate number of purification components based on the carrying capacity, and correcting the error value of the compensation calculation based on the actual measured data of the instrument cold dryer after N operating cycles.

[0007] A further improvement is that the sensor group includes an air moisture sensor and an air oil content detection sensor, and the air moisture sensor and the air oil content detection sensor are used to detect the moisture and oil content of the compressed air respectively, and the flow detector is used to detect the real-time flow of the compressed air.

[0008] A further improvement is that the instrument cold dryer is used to dry and purify the compressed air, and the instrument cold dryer has a built-in detection module for actually measuring the moisture and oil content of the current compressed air.

[0009] Further improvements are: the cyclone separator is located in the middle area inside the tank body, and the inlet of the cyclone separator is connected to the air intake main pipe with a flange. The cyclone separator uses the rotating airflow and centrifugal force to separate the moisture and oil in the compressed air through gravity sedimentation and centrifugal force. The folding baffle is arranged at the upper end of the tank body, and there are multiple groups of folding baffles, which are arranged at a 45° angle on the upper part of the cyclone separator. The folding baffle processes the compressed air by folding separation.

[0010] A further improvement is that: a pressure gauge interface and a safety valve interface are provided on the tank body, and the pressure gauge interface and the safety valve interface are used to connect the pressure gauge and the safety valve.

[0011] A further improvement is that the sewage pumping device has a built-in timer and a water volume sensor for automatically discharging sewage according to the drainage volume at the bottom of the tank body and a set time interval.

[0012] Further improvements are: the control system includes a data acquisition module, a calculation module, an execution module and a compensation module, the data acquisition module is used to collect in real time the current compressed air flow and moisture and oil content detected by the sensor group and the flow detector, and collect the moisture and oil content of the current compressed air measured by the cold dryer for storage.

[0013] A further improvement is that the calculation module has a built-in maximum load capacity of compressed air that each purification component can handle, and the calculation module uses the following steps to calculate the required load capacity based on the current compressed air flow rate and moisture and oil content, and then substituting the required load capacity into the maximum load capacity of the purification component to calculate the number of purification components that need to be opened to handle the current compressed air:

[0014] Define variables: Q current compressed air flow, M moisture content, O oil content, C required load capacity: set indicators based on the purification component's processing capacity and efficiency;

[0015] The carrying capacity is proportional to its ability to process water and oil in unit flow, and is also related to the total flow. A linear model is used for simulation calculation:

[0016] C=k·Q·(wM·M+wO·O)

[0017] k is the proportionality coefficient, which represents the basic processing efficiency and capacity of the purification component. wM and wO are the weighting factors of water and oil, respectively, which are used to adjust the influence of different impurities on the carrying capacity.

[0018] When the efficiency of the purification component decreases with the increase of the processing volume, an efficiency reduction factor is introduced:

[0019] C=k·Q·(wM·M+wO·O)÷(1+β·Q)

[0020] β is the slope parameter of efficiency decline, and k, wM, wO and β are calibrated through experiments and historical data.

[0021] Further improvements are as follows: the compensation module is used to collect historical data on the moisture and oil content of compressed air measured by the instrument cold dryer after N operating cycles, and convert it into a carrying capacity as a compensation error value. Based on the deployment and application of the neural network model, the required carrying capacity calculated by the calculation module in N operating cycles is input into the neural network model, trained with the compensation error value, and the calculated value of the calculation module is corrected.

[0022] A further improvement is that the execution module is used to convert the data of the calculation module into control instructions. When the calculation module calculates the number of purification components required to be opened to process the current compressed air, the execution module converts the calculation result into a control instruction, opens the isolation doors of the corresponding number of purification components, and closes the opening and closing valves at the corresponding positions.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention connects multiple groups of purification components to the compressed air main pipe through the air inlet main pipe and the air outlet main pipe. A cyclone separator and a deflection baffle are installed in the tank body of the purification component. The impurities such as moisture and oil contained in the compressed air are pre-treated by centrifugal and deflection separation methods, and then enter the instrument cold dryer for secondary purification, thereby greatly improving the quality of the compressed air and effectively reducing the content of water and oil liquid impurities entering the instrument cold dryer. It is of great benefit to the protection of the alumina desiccant in the instrument cold dryer, which can enable it to maintain good adsorption performance for a long time.

[0025] 2. The present invention introduces the purification component into the compressed air main pipe through the air inlet main pipe and the air outlet main pipe as a bypass system. After isolation through the isolation door, online isolation inspection and maintenance work can be easily achieved, and there will be no impact on downstream operating equipment during the inspection and maintenance.

[0026] 3. The present invention is provided with an independent control system. According to the current compressed air flow rate and moisture and oil content, the required carrying capacity is calculated by the calculation module, and the required carrying capacity is brought into the maximum carrying capacity of the purification component to calculate the number of purification components required to be opened to process the current compressed air, thereby avoiding waste caused by opening too many purification components. After multiple cycles of processing, the historical data of compressed air moisture and oil content measured by the instrument cold dryer can be converted into carrying capacity as a compensation error value to correct the calculated value of the calculation module, so that the calculation of the calculation module becomes more and more accurate, thereby improving the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of the purification component of the present invention;

[0028] Figure 2 Schematic diagram of the control system of the present invention.

[0029] Among them: 1. Tank body; 2. Sewage extraction device; 3. Air inlet main pipe; 4. Air outlet main pipe; 5. Compressed air main pipe; 6. Instrument cold dryer; 7. Cyclone separator; 8. Baffle; 9. Sensor group; 10. Flow detector; 11. Isolation door; 12. Pressure gauge; 13. Safety valve; 14. Opening and closing valve. DETAILED DESCRIPTION

[0030] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0031] Example 1

[0032] according to Figure 1 、 2As shown, this embodiment proposes a compressed air purification device, including a purification component and a control system, wherein the purification component is provided with multiple groups, and the purification component includes a tank body 1 and a sewage extraction device 2, the sewage extraction device 2 is connected to the bottom of the tank body 1, and the inlet and outlet of the tank body 1 are respectively connected to an air intake main pipe 3 and an air outlet main pipe 4, the input end of the air intake main pipe 3 and the output end of the air outlet main pipe 4 are both connected to a compressed air main pipe 5, and the output end of the compressed air main pipe 5 is connected to an instrument cold dryer 6, a cyclone separator 7 and a deflection baffle 8 are provided inside the tank body 1, and the purification device is provided with a cyclone separator 7 and a deflection baffle 8 ... The compressed air main pipe 5 at the front of the purification component is provided with a sensor group 9 and a flow detector 10. The air inlet main pipe 3 and the air outlet main pipe 4 are both provided with an isolation door 11 to realize online isolation inspection and maintenance of the compressed air purification device. The compressed air main pipe 5 at the position of the purification component is provided with an opening and closing valve 14. The purification component is introduced into the compressed air main pipe 5 through the air inlet main pipe 3 and the air outlet main pipe 4 as a bypass system. After being isolated by the isolation door 11, online isolation inspection and maintenance can be easily realized, and no impact will be caused on downstream operating equipment during the inspection and maintenance.

[0033] The control system has a built-in analysis algorithm for calculating the carrying capacity required to process the current compressed air based on the current compressed air flow rate and moisture and oil content detected by the sensor group 9 and the flow detector 10, opening the isolation doors 11 of an appropriate number of purification components based on the carrying capacity, and correcting the error value of the compensation calculation based on the actual measured data of the instrument cold dryer 6 after N operating cycles. When in use, multiple groups of purification components are connected to the compressed air main pipe 5 through the air inlet main pipe 3 and the air outlet main pipe 4. The tank body 1 of the purification component is equipped with a cyclone separator 7 and a deflection baffle 8. The compressed air is pre-processed with impurities such as moisture and oil by using centrifugal and deflection separation methods, and then enters the instrument cold dryer 6 for secondary purification, thereby greatly improving the quality of the compressed air and effectively reducing the content of water and oil liquid impurities entering the instrument cold dryer 6.

[0034] The sensor group 9 includes an air moisture sensor and an air oil content detection sensor, and the air moisture sensor and the air oil content detection sensor are used to detect the moisture and oil content of the compressed air respectively. The flow detector 10 is used to detect the real-time flow of the compressed air.

[0035] The instrument cold dryer 6 is used to dry and purify compressed air. It also has a built-in detection module for measuring the moisture and oil content of the compressed air. This module is used to measure the moisture and oil content of the compressed air after it has been processed by the purification component, allowing for pre-processing compensation adjustments and subsequent purification.

[0036] The cyclone separator 7 is located in the middle area of ​​the tank body 1, and the inlet of the cyclone separator 7 is flange-connected to the air intake manifold 3. The cyclone separator 7 uses rotating airflow and centrifugal force to separate the moisture and oil in the compressed air through gravity sedimentation and centrifugal force. The deflection baffle 8 is located at the upper end of the tank body 1, and multiple groups of deflection baffles 8 are arranged at a 45° angle on the upper part of the cyclone separator 7. The deflection baffle 8 processes the compressed air through a deflection separation method. It is fixed by welding. The airflow separated by the cyclone separator 7 flows through the deflection baffle 8 again, and the compressed air is processed again through the deflection separation method.

[0037] The tank body 1 is provided with a pressure gauge interface and a safety valve interface, and the pressure gauge interface and the safety valve interface are used to connect the pressure gauge 12 and the safety valve 13. Ensure the safe operation of the tank body.

[0038] The sewage extraction device 2 has a built-in timer and water level sensor, which automatically discharges sewage based on the amount of water discharged from the bottom of the tank body 1 and a set time interval. With this automated discharge, impurities such as water and oil separated by the cyclone separator 7 and the deflection baffle 8 fall to the bottom of the tank body 1. The automatic discharge time can be set based on the amount of water discharged, preventing excessive oil and water inside the tank body 1 from affecting the quality of the compressed air.

[0039] Example 2

[0040] according to Figure 1 、 2 As shown, this embodiment proposes a compressed air purification device, including a purification component and a control system, wherein the purification component is provided with multiple groups, and the purification component includes a tank body 1 and a sewage extraction device 2, the sewage extraction device 2 is connected to the bottom of the tank body 1, and the inlet and outlet of the tank body 1 are respectively connected to the air intake main pipe 3 and the air outlet main pipe 4, the input end of the air intake main pipe 3 and the output end of the air outlet main pipe 4 are both connected to the compressed air main pipe 5, and the output end of the compressed air main pipe 5 is connected to the instrument cold dryer 6, a cyclone separator 7 and a deflection baffle 8 are provided inside the tank body 1, a sensor group 9 and a flow detector 10 are provided on the compressed air main pipe 5 at the front position of the purification component, and an isolation door 11 is provided on the air intake main pipe 3 and the air outlet main pipe 4 to realize online isolation inspection and maintenance work of the compressed air purification device, and an opening and closing valve 14 is provided on the compressed air main pipe 5 at the position of the purification component;

[0041] The control system has a built-in analysis algorithm for calculating the carrying capacity required to process the current compressed air based on the current compressed air flow rate and moisture and oil content detected by the sensor group 9 and the flow detector 10, opening the isolation doors 11 of an appropriate number of purification components based on the carrying capacity, and correcting the error value of the compensation calculation based on the actual measured data of the instrument cold dryer 6 after N operating cycles. When in use, multiple groups of purification components are connected to the compressed air main pipe 5 through the air inlet main pipe 3 and the air outlet main pipe 4. The tank body 1 of the purification component is equipped with a cyclone separator 7 and a deflection baffle 8. The compressed air is pre-processed with impurities such as moisture and oil by using centrifugal and deflection separation methods, and then enters the instrument cold dryer 6 for secondary purification, thereby greatly improving the quality of the compressed air and effectively reducing the content of water and oil liquid impurities entering the instrument cold dryer 6.

[0042] The control system includes a data acquisition module, a calculation module, an execution module, and a compensation module. The data acquisition module is used to collect in real time the current compressed air flow rate and moisture and oil content detected by the sensor group 9 and flow detector 10. It also collects and stores the current moisture and oil content of the compressed air measured by the instrument dryer 6. This data is stored in a cloud disk with a built-in timestamp query function for querying data based on time.

[0043] The calculation module has a built-in maximum load capacity of compressed air that each purification component can handle. The calculation module calculates the required load capacity based on the current compressed air flow rate and the moisture and oil content using the following steps. The required load capacity is then substituted into the maximum load capacity of the purification component to calculate the number of purification components that need to be opened to process the current compressed air:

[0044] Define variables: Q current compressed air flow, M moisture content, O oil content, C required load capacity: set indicators based on the purification component's processing capacity and efficiency;

[0045] The carrying capacity is proportional to its ability to process water and oil in unit flow, and is also related to the total flow. A linear model is used for simulation calculation:

[0046] C=k·Q·(wM·M+wO·O)

[0047] k is the proportionality coefficient, which represents the basic processing efficiency and capacity of the purification component. wM and wO are the weighting factors of water and oil, respectively, which are used to adjust the influence of different impurities on the carrying capacity.

[0048] When the efficiency of the purification component decreases with the increase of the processing volume, an efficiency reduction factor is introduced:

[0049] C=k·Q·(wM·M+wO·O)÷1+β·Q

[0050] β is the slope parameter of efficiency decline, and k, wM, wO and β are calibrated through experiments and historical data.

[0051] The compensation module is used to collect historical data of the moisture and oil content of the compressed air measured by the instrument cold dryer 6 after N operating cycles, and convert it into a load capacity as a compensation error value, which specifically includes the following process:

[0052] The neural network is trained using the compensation error value. During the training process, the weights and biases of the neural network are adjusted by minimizing the error between the predicted compensation value and the actual compensation value.

[0053] Use gradient descent or Adam optimizer to update weights and biases;

[0054] Deploy the trained neural network model for application;

[0055] The required load capacity calculated by the calculation module in N operating cycles is input into the neural network model, trained with the compensation error value, and the calculated value of the calculation module is corrected.

[0056] The execution module is used to convert the data of the calculation module into control instructions. When the calculation module calculates the number of purification components required to be opened to process the current compressed air, the execution module converts the calculation result into a control instruction, opens the isolation doors 11 of the corresponding number of purification components, and closes the opening and closing valves 14 at the corresponding positions.

[0057] The compressed air purification device connects multiple groups of purification components to the compressed air main pipe 5 through the air inlet main pipe 3 and the air outlet main pipe 4. The tank body 1 of the purification component is equipped with a cyclone separator 7 and a deflection baffle 8. The compressed air is pre-processed with impurities such as moisture and oil by using centrifugal and deflection separation methods, and then enters the instrument cold dryer 6 for secondary purification, thereby greatly improving the quality of the compressed air and effectively reducing the content of water and oil liquid impurities entering the instrument cold dryer 6. It is of great benefit to the protection of the alumina desiccant in the instrument cold dryer 6, and can maintain good adsorption performance for a long time. In addition, the present invention introduces the purification component into the compressed air main pipe 5 through the air inlet main pipe 3 and the air outlet main pipe 4 as a bypass system. After being isolated by the isolation door 11, it can easily realize online isolation inspection and maintenance work, and will not cause any impact on downstream operating equipment during the inspection and maintenance. At the same time, the present invention is provided with an independent control system, which calculates the required carrying capacity through the calculation module according to the current compressed air flow rate and moisture and oil content, and brings the required carrying capacity into the maximum carrying capacity of the purification component to calculate the number of purification components required to be opened to process the current compressed air, thereby avoiding waste caused by opening too many purification components. After multiple cycles of processing, the historical data of compressed air moisture and oil content actually measured by the instrument cold dryer 6 can be converted into carrying capacity as a compensation error value to correct the calculated value of the calculation module, so that the calculation of the calculation module becomes more and more accurate, thereby improving the reliability of the system.

[0058] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressed air purification device, comprising a purification component and a control system, characterized in that: The purification assembly is provided with multiple groups, and the purification assembly includes a tank body (1) and a sewage pumping device (2), the sewage pumping device (2) is connected to the bottom of the tank body (1), and the inlet and outlet of the tank body (1) are respectively connected to the air inlet main pipe (3) and the air outlet main pipe (4), the input end of the air inlet main pipe (3) and the output end of the air outlet main pipe (4) are both connected to the compressed air main pipe (5), and the output end of the compressed air main pipe (5) is connected to the instrument cold dryer (6), a cyclone separator (7) and a deflection baffle (8) are provided inside the tank body (1), a sensor group (9) and a flow detector (10) are provided on the compressed air main pipe (5) at the front position of the purification assembly, the air inlet main pipe (3) and the air outlet main pipe (4) are both provided with an isolation door (11), and an opening and closing valve (14) is provided on the compressed air main pipe (5) at the position of the purification assembly; The control system has a built-in analysis algorithm for calculating the load capacity required to process the current compressed air based on the current compressed air flow rate and the moisture and oil content detected by the sensor group (9) and the flow detector (10), opening the isolation doors (11) of the appropriate number of purification components based on the load capacity, and correcting the error value of the compensation calculation based on the actual measured data of the instrument cold dryer (6) after N operating cycles; The sensor group (9) includes an air moisture sensor and an air oil content detection sensor, and the air moisture sensor and the air oil content detection sensor are used to detect the moisture content and oil content of the compressed air respectively, and the flow detector (10) is used to detect the real-time flow rate of the compressed air; The instrument cold dryer (6) is used to dry and purify the compressed air, and the instrument cold dryer (6) has a built-in detection module for measuring the moisture and oil content of the current compressed air; The cyclone separator (7) is located in the middle area inside the tank body (1), and the inlet of the cyclone separator (7) is connected to the air intake main pipe (3) by a flange. The cyclone separator (7) uses the rotating airflow and centrifugal force to separate the moisture and oil in the compressed air by gravity sedimentation and the action of centrifugal force. The deflection baffle (8) is provided at the upper end of the tank body (1), and the deflection baffle (8) is provided with multiple groups and is arranged at an angle of 45 degrees on the upper part of the cyclone separator (7). The deflection baffle (8) processes the compressed air by deflection separation. The control system includes a data acquisition module, a calculation module, an execution module and a compensation module. The data acquisition module is used to collect the current compressed air flow and moisture and oil content detected by the sensor group (9) and the flow detector (10) in real time, and to collect the moisture and oil content of the current compressed air measured by the cold dryer (6) for storage.

2. A compressed air purification device according to claim 1, characterized in that: The tank body (1) is provided with a pressure gauge interface and a safety valve interface, and the pressure gauge interface and the safety valve interface are used to connect the pressure gauge (12) and the safety valve (13).

3. A compressed air purification device according to claim 2, characterized in that: The sewage extraction device (2) has a built-in timer and a water volume sensor, and is used to automatically discharge sewage according to the drainage volume at the bottom of the tank body (1) and a set time interval.

4. A compressed air purification device according to claim 1, characterized in that: The calculation module has a built-in maximum load capacity of compressed air that each purification component can handle. The calculation module calculates the required load capacity based on the current compressed air flow rate and the moisture and oil content using the following steps. The required load capacity is then substituted into the maximum load capacity of the purification component to calculate the number of purification components that need to be opened to process the current compressed air: Define variables: Q current compressed air flow, M moisture content, O oil content, C required load capacity: set indicators based on the purification component's processing capacity and efficiency; The carrying capacity is proportional to its ability to process water and oil in unit flow, and is also related to the total flow. A linear model is used for simulation calculation: C=k·Q·(wM·M+wO·O) k is the proportionality coefficient, which represents the basic processing efficiency and capacity of the purification component. wM and wO are the weighting factors of water and oil, respectively, which are used to adjust the influence of different impurities on the carrying capacity. When the efficiency of the purification component decreases with the increase of the processing volume, an efficiency reduction factor is introduced: C=k·Q·(wM·M+wO·O)÷(1+β·Q) β is the slope parameter of efficiency decline, and k, wM, wO and β are calibrated through experiments and historical data.

5. A compressed air purification device according to claim 4, characterized in that: The compensation module is used to collect historical data of the moisture and oil content of the compressed air measured by the instrument cold dryer (6) after N operating cycles, and convert it into a load capacity as a compensation error value. Based on the deployment application of the neural network model, the required load capacity calculated by the calculation module in the N operating cycles is input into the neural network model, trained with the compensation error value, and corrected the calculated value of the calculation module.

6. A compressed air purification device according to claim 5, characterized in that: The execution module is used to convert the data of the calculation module into a control instruction. When the calculation module calculates the number of purification components that need to be opened to process the current compressed air, the execution module converts the result of the calculation into a control instruction to open the isolation doors (11) of the corresponding number of purification components and close the opening and closing valves (14) at the corresponding positions.

Images