Water circulation oil cooling dobby device and control method thereof

Abstract

The invention provides a water circulation oil cooling dobby device. The water circulation oil cooling dobby device comprises a textile machine, a water circulation unit, an oil cooling unit, a sensor array and a controller. The sensor array collects water turbidity, lubricating oil temperature, water flow, oil flow, oil tank liquid level and load torque during operation of the textile machine in real time; the controller dynamically calculates the target flow of the water circulation unit through a first control model based on the water turbidity and adjusts the operation frequency of the water pump; and based on the lubricating oil temperature and the load torque, the target oil injection frequency of the oil cooling unit is dynamically calculated through a second control model, and the operation frequency of the oil pump is adjusted. Through sensor array fusion and a self-adaptive control algorithm, closed-loop intelligent control over the water circulation unit and the oil cooling unit is achieved, dependence on manual intervention is greatly reduced, mechanical faults caused by insufficient lubrication or poor cooling are effectively prevented, the service life of equipment is prolonged, and the service life of the equipment is prolonged. And the overall operation efficiency and stability are improved.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery technology, and particularly relates to a water-circulating oil-cooled multi-arm device and its control method. Background Technology

[0002] In modern textile production, water-jet looms are widely used due to their high speed and efficiency. However, they consume a large amount of process water during operation, and the heat generated by high-speed friction of mechanical parts requires cooling and lubrication through a lubrication system. Currently, common textile auxiliary systems typically treat water recovery and lubrication cooling as two independent modules, lacking coordinated control and intelligent optimization between systems, resulting in the following technical shortcomings: 1. Low water resource utilization efficiency Traditional water recycling systems often use fixed-speed water pumps, which operate at a constant power regardless of the cleanliness of the water, resulting in energy waste. During the weaving process, the water quality is contaminated by sizing agents, fiber debris, etc., and the turbidity changes dynamically. Fixed-flow filtration methods are prone to incomplete filtration or excessive filtration capacity, affecting water quality stability and weaving quality.

[0003] 2. Insufficient intelligence in the lubrication and cooling system Existing lubrication systems mostly use timed and metered oil injection, which cannot be dynamically adjusted according to the actual operating load and temperature of the machinery. Over-lubrication under light loads leads to oil waste and environmental pollution, while under-lubrication under heavy loads or high temperatures accelerates mechanical wear and may even cause equipment failure.

[0004] 3. Lack of coordination between systems The water system and oil system operate independently, making data exchange and collaborative optimization impossible. For example, when oil temperature rises, increasing the cooling water flow can help lower the temperature, but the existing system lacks such a linkage mechanism.

[0005] 4. Weak condition monitoring and early warning capabilities Traditional equipment lacks real-time monitoring of key parameters such as water turbidity, oil temperature, flow rate, liquid level, and mechanical load. The equipment's operating status is not transparent, and faults are often only discovered after they occur, affecting production continuity.

[0006] Therefore, developing a textile device with multi-parameter sensing, adaptive adjustment, and status early warning functions to address the above problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] This invention aims to overcome the shortcomings of existing technologies and provide a water-circulating oil-cooling multi-arm device and its control method. By constructing a multi-sensor monitoring platform and establishing an adaptive control model, intelligent collaborative control of the water circulation system and the lubrication and cooling system can be achieved, thereby improving resource utilization efficiency and equipment operation reliability.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A water-circulating oil-cooled multi-arm device is characterized by comprising a textile machine, a water circulation unit, an oil cooling unit, a sensor array, and a controller; the water circulation unit is used to recover the cooling water from the textile machine and circulate it for cooling; the oil cooling unit is used to recover the lubricating oil at the lubrication points of the textile machine and circulate it after cooling by the water circulation unit; the sensor array is used to collect the operating parameters of the textile machine and the recovery and cooling parameters of the water and oil in real time; the controller is electrically connected to the water pump in the water circulation unit, the oil pump in the oil cooling unit, and the sensor array, and the controller's execution steps are as follows: a) Real-time acquisition of the textile machine's operating parameters and water and oil recovery cooling parameters via a sensor array. These recovery cooling parameters include water turbidity, lubricating oil temperature, water flow rate, oil flow rate, and oil tank level. The operating parameters refer to the load torque during textile machine operation. b) Based on water turbidity, a first control model dynamically calculates the target flow rate of the water circulation unit and adjusts the water pump's operating frequency. c) Based on lubricating oil temperature and load torque, a second control model dynamically calculates the target oil injection frequency of the oil cooling unit and adjusts the oil pump's operating frequency. Furthermore, the oil cooling unit includes a lubricating oil filter for filtering the lubricating oil. The lubricating oil filter is surrounded by a cooling cover, and filtered cooling water is filled between the cooling cover and the lubricating oil filter to cool it.

[0009] Furthermore, the sensor array includes: A photoelectric turbidity sensor is installed at the cooling water filter of the water circulation unit to collect the turbidity of the filtered water; a thermocouple temperature sensor is installed at the outlet of the oil cooling unit to collect the temperature of the returning lubricating oil; a first electromagnetic flow meter is installed on the return water pipe of the water circulation unit to collect the water flow rate; and a second electromagnetic flow meter is installed on the return oil pipe of the oil cooling unit to collect the oil flow rate. A torque sensor is installed at the kinematic pair of the textile machine to collect the load torque during the operation of the textile machine; a liquid level sensor is installed inside the oil tank of the oil cooling unit to collect the liquid level in the oil tank; the controller also provides a low oil level warning based on the liquid level in the oil tank.

[0010] Furthermore, the first control model is an adaptive control model based on water turbidity, and the target flow rate of the water circulation unit is calculated according to the following formula. : ; in, Set the traffic based on the base. Turbidity-flow gain coefficient For real-time turbidity, The standard turbidity threshold is used.

[0011] Furthermore, the controller adjusts the inverter output frequency of the water pump based on an incremental PI algorithm. To eliminate real-time water flow With target traffic Deviation between Adjust as follows: ; in, and These are the proportional coefficient and integral coefficient of the flow control loop, respectively.

[0012] Furthermore, the second controller is a lubrication control model based on load and temperature, and calculates the target oil injection frequency of the oil cooling unit according to the following formula. : ; in, Based on the basic oil injection frequency, This is the load weighting coefficient. For real-time load torque, The rated operating torque, Temperature weighting coefficient, For real-time lubricating oil temperature, This refers to the safe temperature threshold for lubricating oil.

[0013] Furthermore, the controller detects the real-time temperature of the lubricating oil. Temperatures exceeding the safe temperature threshold of lubricating oil And real-time turbidity The turbidity alarm value was not exceeded. At that time, based on the target flow rate calculated by the first control model, an additional synergistic cooling flow rate increment is added. As shown in the following formula: ; in, For the synergistic cooling coefficient, .

[0014] Furthermore, the filter unit is a filter sponge; a grid is also laid flat at the bottom of the water tank; and the oil cooling pipe is disposed between the bottom of the water tank and the grid. Based on the above-mentioned water-circulating oil-cooling multi-arm device, the present invention also provides a control method for the device, including the following steps: S1. Deploy a sensor array in the textile machine to collect data in real time on the turbidity of the water, the temperature of the lubricating oil, the water flow rate, the oil flow rate, the oil tank level, and the load torque during the operation of the textile machine. S2. Based on the collected water turbidity, the target flow rate of the water circulation unit is calculated through the first preset control model in the controller, and a water pump frequency adjustment command is generated to gradually bring the actual water flow rate to the target flow rate. S3. Based on the collected lubricating oil temperature and load torque, the target oil injection frequency of the oil cooling unit is calculated through the second preset control model in the controller, and an oil pump frequency adjustment command is generated to gradually bring the actual oil injection frequency to the target oil injection frequency. S4. The oil tank level is monitored in real time, and an early warning signal is triggered when the level is lower than the preset low level threshold. S5. Steps S2 to S4 are continuously performed to achieve coordinated control of the water circulation unit, the oil cooling unit, and the textile machine.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention achieves closed-loop intelligent control of the water circulation unit and oil cooling unit through sensor array fusion and adaptive control algorithm, which greatly reduces the dependence on manual intervention; 2. The water circulation unit can adjust according to the water quality as needed, avoiding the energy waste of continuous high-speed operation of the water pump. At the same time, the oil cooling unit can accurately inject oil according to the load and temperature, reducing lubricant consumption and waste. 3. By real-time monitoring and dynamic adjustment of the operating parameters of the textile machine and the water and oil recovery cooling parameters, mechanical failures caused by insufficient lubrication or poor cooling are effectively prevented, extending the service life of the equipment and improving the overall operating efficiency and stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the water-circulating oil-cooling multi-arm device in an embodiment of the present invention; Figure 2 This is a flowchart of the control method for the water-circulating oil-cooled multi-arm device in an embodiment of the present invention.

[0017] List of reference numerals in the attached diagram: 1. Textile machine; 2. Lubricating oil filter; 3. Cooling cover. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The specific implementation methods of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: like Figure 1As shown, this embodiment provides a water-circulating oil-cooled multi-arm device, including a textile machine 1, a water circulation unit, and an oil cooling unit; the water circulation unit is used to recover the cooling water of the textile machine and perform circulating cooling; the oil cooling unit is used to recover the lubricating oil at the lubrication points of the textile machine and circulate it after being cooled by the water circulation unit; the oil cooling unit also includes a lubricating oil filter 2 for filtering the lubricating oil; the lubricating oil filter 2 is wrapped with a cooling cover 3, and the space between the cooling cover 3 and the lubricating oil filter 2 is filled with filtered cooling water for cooling the lubricating oil filter 2.

[0020] It also includes sensor arrays and controllers.

[0021] A sensor array is used to collect real-time operating parameters of the textile machine 1 and water and oil recovery cooling parameters. The recovery cooling parameters include water turbidity, lubricating oil temperature, water flow rate, oil flow rate, and oil tank level. The operating parameter is the load torque of the textile machine 1 during operation. The sensor array includes a photoelectric turbidity sensor, a thermocouple temperature sensor, a first electromagnetic flow meter, a second electromagnetic flow meter, a torque sensor, and a level sensor. The photoelectric turbidity sensor is installed downstream of the cooling water filter in the water circulation unit to collect the turbidity of the filtered water. The thermocouple temperature sensor is installed at the outlet of the oil cooling unit to collect the temperature of the returning lubricating oil. The first electromagnetic flow meter is installed on the return water pipe of the water circulation unit to collect the water flow rate. The second electromagnetic flow meter is installed on the return oil pipe of the oil cooling unit to collect the oil flow rate. The torque sensor is installed at the kinematic joint of the textile machine to collect the load torque during operation. The level sensor is installed inside the oil tank of the oil cooling unit to collect the oil tank level. The controller is electrically connected to the water pump, oil pump, and sensor array, and the controller's execution steps are as follows: a. Real-time acquisition of operating parameters of textile machine 1 and water and oil recovery cooling parameters via sensor array. Recovery cooling parameters include water turbidity, lubricating oil temperature, water flow rate, oil flow rate, and oil tank level; operating parameters include the load torque of textile machine 1 during operation. b. Based on water turbidity, the target flow rate of the water circulation unit is dynamically calculated using a first control model, and the operating frequency of water pump 4 is adjusted accordingly. The first control model is an adaptive control model based on water turbidity, and the target flow rate of the water circulation unit is calculated using the following formula. : ; in, Set the traffic based on the base. Turbidity-flow gain coefficient For real-time turbidity, The standard turbidity threshold; The controller adjusts the inverter output frequency of the water pump based on an incremental PI algorithm. To eliminate real-time water flow With target traffic Deviation between Adjust as follows: ; in, and These are the proportional and integral coefficients of the flow control loop, respectively. c. Based on the lubricating oil temperature and load torque, the target oil injection frequency of the oil cooling unit is dynamically calculated using the second control model, and the operating frequency of oil pump 8 is adjusted accordingly. The second controller is a lubrication control model based on load and temperature, which calculates the target oil injection frequency of the oil cooling unit according to the following formula. : ; in, Based on the basic oil injection frequency, This is the load weighting coefficient. For real-time load torque, The rated operating torque, Temperature weighting coefficient, For real-time lubricating oil temperature, This refers to the safe temperature threshold for lubricating oil. The controller detects the real-time oil temperature of the lubricating oil. Temperatures exceeding the safe temperature threshold of lubricating oil And real-time turbidity The turbidity alarm value was not exceeded. At that time, based on the target flow rate calculated by the first control model, an additional synergistic cooling flow rate is added. As shown in the following formula: ; in, For the synergistic cooling coefficient, .

[0022] d. The controller also provides low oil level warnings based on the oil tank level.

[0023] Example 2: This example is based on the water-circulating oil-cooled multi-arm device provided in Example 1, and provides a control method for the device, such as... Figure 2 As shown, it includes the following steps: S1. Deploy a sensor array in the textile machine to collect data in real time on the turbidity of the water, the temperature of the lubricating oil, the water flow rate, the oil flow rate, the oil tank level, and the load torque during the operation of the textile machine.

[0024] S2. Based on the collected water turbidity, the target flow rate of the water circulation unit is calculated through the first control model preset in the controller, and a water pump frequency adjustment command is generated so that the actual water flow rate gradually reaches the target flow rate. The first control model is an adaptive control model based on water turbidity, and the target flow rate of the water circulation unit is calculated according to the following formula. : ; in, Set the traffic based on the base. Turbidity-flow gain coefficient For real-time turbidity, The standard turbidity threshold; The controller adjusts the inverter output frequency of water pump 4 based on an incremental PI algorithm. To eliminate real-time water flow With target traffic Deviation between Adjust as follows: ; in, and These are the proportional coefficient and integral coefficient of the flow control loop, respectively. S3. Based on the collected lubricating oil temperature and load torque, the target oil injection frequency of the oil cooling unit is calculated through the second control model preset in the controller, and an oil pump frequency adjustment command is generated to gradually bring the actual oil injection frequency to the target oil injection frequency; The second controller is a lubrication control model based on load and temperature, and the target oil injection frequency of the oil cooling unit is calculated according to the following formula. : ; in, Based on the basic oil injection frequency, This is the load weighting coefficient. For real-time load torque, The rated operating torque, Temperature weighting coefficient, For real-time lubricating oil temperature, This refers to the safe temperature threshold for lubricating oil. The controller detects the real-time oil temperature of the lubricating oil. Temperatures exceeding the safe temperature threshold of lubricating oil And real-time turbidity The turbidity alarm value was not exceeded. At that time, based on the target flow rate calculated by the first control model, an additional synergistic cooling flow rate is added. As shown in the following formula: ; in, For the synergistic cooling coefficient, S4. Real-time monitoring of the fuel tank level; when the level falls below a preset low level threshold, an early warning signal is triggered.

[0025] Run the test: Using the device mentioned in Example 1 and the control method provided in Example 2, the textile machine was continuously run for 24 hours and tested. Compared with the parameters of a traditional textile machine, the water circulation unit saved about 22% energy, the oil cooling unit consumed about 18% less energy, the average temperature of the key bearings of the textile machine decreased by about 8°C, and no fault alarms occurred due to insufficient lubrication or cooling.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A water-circulating oil-cooled multi-arm device, characterized in that, The system includes a textile machine, a water circulation unit, an oil cooling unit, a sensor array, and a controller. The water circulation unit recovers cooling water from the textile machine and circulates it for cooling. The oil cooling unit recovers lubricating oil from the lubrication points of the textile machine and circulates it after cooling by the water circulation unit. The sensor array collects real-time operating parameters of the textile machine and parameters related to the water and oil recovery and cooling. The controller is electrically connected to the water pump in the water circulation unit, the oil pump in the oil cooling unit, and the sensor array. The controller's execution steps are as follows: a. Real-time acquisition of the textile machine's operating parameters and water and oil recovery cooling parameters via a sensor array. The recovery cooling parameters include water turbidity, lubricating oil temperature, water flow rate, oil flow rate, and oil tank level. The operating parameters are the load torque during textile machine operation. b. Based on water turbidity, the target flow rate of the water circulation unit is dynamically calculated using a first control model, and the operating frequency of the water pump is adjusted. c. Based on lubricating oil temperature and load torque, the target oil injection frequency of the oil cooling unit is dynamically calculated using a second control model, and the operating frequency of the oil pump is adjusted.

2. The water-circulating oil-cooled multi-arm device according to claim 1, characterized in that, The oil cooling unit also includes a lubricating oil filter for filtering the lubricating oil; the lubricating oil filter is surrounded by a cooling cover, and the space between the cooling cover and the lubricating oil filter is filled with filtered cooling water for cooling the lubricating oil filter.

3. The water-circulating oil-cooled multi-arm device according to claim 2, characterized in that, The sensor array includes: A photoelectric turbidity sensor is installed at the cooling water filter of the water circulation unit to collect the turbidity of the filtered water; a thermocouple temperature sensor is installed at the outlet of the oil cooling unit to collect the temperature of the returning lubricating oil; a first electromagnetic flow meter is installed on the return water pipe of the water circulation unit to collect the water flow rate; and a second electromagnetic flow meter is installed on the return oil pipe of the oil cooling unit to collect the oil flow rate. A torque sensor is installed at the kinematic pair of the textile machine to collect the load torque during the operation of the textile machine; a liquid level sensor is installed inside the oil tank of the oil cooling unit to collect the liquid level in the oil tank; the controller also provides a low oil level warning based on the liquid level in the oil tank.

4. The water-circulating oil-cooled multi-arm device according to claim 3, characterized in that, The first control model is an adaptive control model based on water turbidity, and the target flow rate of the water circulation unit is calculated according to the following formula. : ； in, Set the traffic based on the base. Turbidity-flow gain coefficient For real-time turbidity, The standard turbidity threshold is used.

5. A water-circulating oil-cooled multi-arm device according to claim 4, characterized in that, The controller adjusts the inverter output frequency of the water pump based on an incremental PI algorithm. To eliminate real-time water flow With target traffic Deviation between Adjust as follows: ; in, and These are the proportional coefficient and integral coefficient of the flow control loop, respectively.

6. A water-circulating oil-cooled multi-arm device according to claim 5, characterized in that, The second controller is a lubrication control model based on load and temperature, and calculates the target oil injection frequency of the oil cooling unit according to the following formula. : ; in, Based on the basic oil injection frequency, This is the load weighting coefficient. For real-time load torque, The rated operating torque, Temperature weighting coefficient, For real-time lubricating oil temperature, This refers to the safe temperature threshold for lubricating oil.

7. A water-circulating oil-cooled multi-arm device according to claim 6, characterized in that, The controller detects the real-time oil temperature of the lubricating oil. Temperatures exceeding the safe temperature threshold of lubricating oil And real-time turbidity The turbidity alarm value was not exceeded. At that time, based on the target flow rate calculated by the first control model, an additional synergistic cooling flow rate is added. As shown in the following formula: ; in, For the synergistic cooling coefficient, .

8. A control method for a water-circulating oil-cooled multi-arm device as described in claims 1-7, characterized in that, Includes the following steps: S1. Deploy a sensor array in the textile machine to collect data in real time on the turbidity of the water, the temperature of the lubricating oil, the water flow rate, the oil flow rate, the oil tank level, and the load torque during the operation of the textile machine. S2. Based on the collected water turbidity, the target flow rate of the water circulation unit is calculated through the first preset control model in the controller, and a water pump frequency adjustment command is generated to gradually bring the actual water flow rate to the target flow rate. S3. Based on the collected lubricating oil temperature and load torque, the target oil injection frequency of the oil cooling unit is calculated through the second preset control model in the controller, and an oil pump frequency adjustment command is generated to gradually bring the actual oil injection frequency to the target oil injection frequency. S4. The oil tank level is monitored in real time, and an early warning signal is triggered when the level is lower than the preset low level threshold. S5. Steps S2 to S4 are continuously performed to achieve coordinated control of the water circulation unit, the oil cooling unit, and the textile machine.

Images