An air test method, device and electronic equipment for a gas blower

Abstract

The present invention discloses a method, device and electronic equipment for air commissioning of a gas blower. The method for air commissioning of a gas blower includes: adjusting the air intake to the atmosphere port to a first opening degree; adjusting the air outlet to the atmosphere port to full open; controlling the motor to start without load; after the speed of the blower is stable, gradually increasing the opening degree of the air intake to the atmosphere port from the first opening degree to a second opening degree; during the process of gradually increasing the opening degree of the air intake to the atmosphere port from the first opening degree to the second opening degree, correspondingly adjusting the speed of the blower according to the opening degree of the air intake to the atmosphere port; after each adjustment of the speed of the blower, obtaining the vibration data of the blower; judging the state of the gas blower according to the vibration data of the blower; wherein, the opening degree of the air intake to the atmosphere port corresponds one-to-one with the speed of the blower. The present invention can reduce the possibility of abnormal failure in commissioning and reduce the hearing damage to the operator.

Description

Technical Field

[0001] Embodiments of the present invention relate to testing technologies, and in particular, to an air test method, device, and electronic device for a gas blower. Background Art

[0002] A gas blower is a blowing device used to transport coke oven gas. It includes an electric motor, a hydraulic coupling, and a blower. After the gas blower has been used for a period of time, it needs to be shut down for maintenance. After the maintenance is completed, it can only be put into use again when the off-line test results are normal.

[0003] In the existing air test methods for gas blowers, the opening degrees of the air outlets for inlet and outlet and the parameters of the hydraulic coupling are manually controlled, and whether the equipment fails is judged according to the vibration values of the blower at various rotational speeds.

[0004] However, the existing air test methods are likely to cause the blower to trip frequently, resulting in abnormal test failures, and will also cause harm to the hearing of operators. Summary of the Invention

[0005] The present invention provides an air test method, device, and electronic device for a gas blower to reduce the possibility of abnormal test failures and reduce the hearing damage to operators.

[0006] In a first aspect, an embodiment of the present invention provides an air test method for a gas blower. The air test method for the gas blower includes:

[0007] Adjust the air inlet opening to the first opening degree;

[0008] Adjust the air outlet opening to full open;

[0009] Control the motor to start without load;

[0010] After the rotational speed of the blower is stable, gradually increase the opening degree of the air inlet opening from the first opening degree to the second opening degree;

[0011] During the process of gradually increasing the opening degree of the air inlet opening from the first opening degree to the second opening degree, adjust the rotational speed of the blower according to the opening degree of the air inlet opening;

[0012] After each adjustment of the rotational speed of the blower, obtain the vibration data of the blower;

[0013] Judge the state of the gas blower according to the vibration data of the blower;

[0014] Wherein, the opening degree of the air inlet opening corresponds one-to-one to the rotational speed of the blower.

[0015] Optionally, after the rotational speed of the blower is stable, gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the second opening degree includes:

[0016] After the rotational speed of the blower during no-load operation is stable, gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the third opening degree, where the difference between adjacent two opening degrees of the air intake to the atmosphere is equal to a first preset opening degree;

[0017] Increasing the opening degree of the air intake to the atmosphere from the third opening degree to the second opening degree, where the difference between the second opening degree and the third opening degree of the air intake to the atmosphere is equal to a second preset opening degree, and the second preset opening degree is greater than the first preset opening degree; the surge range of the blower is greater than the rotational speed of the blower corresponding to the third opening degree and less than the rotational speed of the blower corresponding to the second opening degree.

[0018] Optionally, after each adjustment of the rotational speed of the blower, obtaining the vibration data of the blower includes:

[0019] During the process of gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the third opening degree, after each adjustment of the rotational speed of the blower, standing for a first preset time;

[0020] Obtaining the vibration data of the blower within a second preset time after standing;

[0021] During the process of increasing the opening degree of the air intake to the atmosphere from the third opening degree to the second opening degree, after adjusting the rotational speed of the blower, standing for a first preset time;

[0022] Obtaining the vibration data of the blower within a third preset time after standing;

[0023] Wherein, the third preset time is greater than the second preset time.

[0024] Optionally, the rotational speed of the blower corresponding to the second opening degree of the air intake to the atmosphere is the load-carrying rotational speed of the blower, where the load-carrying rotational speed is the rotational speed with the highest frequency during the operation of the blower.

[0025] Optionally, judging the state of the gas blower according to the vibration data of the blower includes:

[0026] Judging whether the vibration data are all less than a vibration threshold value;

[0027] If the vibration data are all less than the vibration threshold value, determining that the test of the gas blower is successful;

[0028] If there are values greater than the vibration threshold value in the vibration data, determining that the test of the gas blower fails.

[0029] Optionally, judging the state of the gas blower according to the vibration data of the blower includes:

[0030] Judging whether the change amount of the vibration data within a fourth preset time is less than a change threshold;

[0031] Judging whether the vibration data is less than a vibration threshold;

[0032] If the change amount of the vibration data within the fourth preset time is less than the change threshold and the vibration data is less than the vibration threshold, it is determined that the test of the gas blower is successful;

[0033] If the change amount of the vibration data within the fourth preset time is greater than the change threshold or / and there is a value in the vibration data that is greater than the vibration threshold, it is determined that the test of the gas blower fails.

[0034] Optionally, the vibration data includes vibration displacement data.

[0035] Optionally, controlling the motor to start without load includes:

[0036] Setting the speed ratio of the hydraulic coupling between the blower and the motor to 0;

[0037] Starting the motor.

[0038] In a second aspect, an air test device for a gas blower provided by an embodiment of the present invention includes: a first opening degree adjusting unit, a second opening degree adjusting unit, a motor starting unit, a third opening degree adjusting unit, a blower speed adjusting unit, a vibration data acquisition unit, and a state judgment unit;

[0039] The first opening degree adjusting unit is used to adjust the air inlet to the open air port to a first opening degree;

[0040] The second opening degree adjusting unit is used to adjust the air outlet to the open air port to be fully open;

[0041] The motor starting unit is used to control the motor to start without load;

[0042] The third opening degree adjusting unit is used to gradually increase the opening degree of the air inlet to the open air port from the first opening degree to a second opening degree after the speed of the blower is stable;

[0043] The blower speed adjusting unit is used to correspondingly adjust the blower speed according to the opening degree of the air inlet to the open air port during the process of gradually increasing the opening degree of the air inlet to the open air port from the first opening degree to the second opening degree;

[0044] The vibration data acquisition unit is used to acquire the vibration data of the blower each time the blower speed is adjusted;

[0045] The status judgment unit is used to judge the status of the gas blower according to the vibration data of the blower;

[0046] Wherein, the opening degree of the air outlet to the atmosphere corresponds one-to-one with the blower speed.

[0047] In a third aspect, an embodiment of the present invention further provides an electronic device, which includes: a vibration sensor, an intake air outlet to atmosphere regulating valve, an exhaust air outlet to atmosphere regulating valve, at least one processor, and a memory connected to the at least one processor;

[0048] Wherein, the memory stores a computer program executable by the processor, and the computer program is executed by the processor so that the at least one processor can execute the air commissioning method of the gas blower according to any one of the first aspects.

[0049] For the air commissioning method, device and electronic device of the gas blower provided in this embodiment, before clicking to start, the opening degree of the intake air outlet to the atmosphere is set to the first opening degree corresponding to the speed of the blower under the no-load state of the motor, and then the motor is controlled to start without load, which can reduce the starting load of the motor, thereby reducing the starting current of the motor and preventing the starting damage of the high-voltage motor. After the blower starts stably, before each adjustment of the blower speed, the opening degree of the exhaust air outlet to the atmosphere is adjusted according to the speed that the blower needs to detect, which can prevent the abnormal failure of the commissioning caused by the turbulent flow after the blower speeds up. The opening degree of the exhaust air outlet to the atmosphere is set to be fully open, and only the opening degree of the intake air outlet to the atmosphere is adjusted during the commissioning process, which can improve the control workload of the staff or the control device, reduce the hearing damage to the operator, and prevent the sudden high pressure of the exhaust air outlet to the atmosphere caused by the small diameter of the exhaust air outlet to the atmosphere and the failure to adjust the opening degree of the exhaust air outlet to the atmosphere in time, further reducing the possibility of abnormal failure of the commissioning. Description of the Drawings

[0050] Figure 1 It is a schematic structural diagram of an air commissioning system of a gas blower provided by an embodiment of the present invention;

[0051] Figure 2 It is a schematic flowchart of an air commissioning method of a gas blower provided by an embodiment of the present invention;

[0052] Figure 3 It is a schematic flowchart of another air commissioning method of a gas blower provided by an embodiment of the present invention;

[0053] Figure 4 It is a schematic flowchart of a method for judging the status of a gas blower according to the vibration data of the blower provided by an embodiment of the present invention;

[0054] Figure 5A schematic flow chart of another method for judging the state of a gas blower according to the vibration data of a fan provided by an embodiment of the present invention;

[0055] Figure 6 A schematic flow chart of yet another air commissioning method for a gas blower provided by an embodiment of the present invention;

[0056] Figure 7 A schematic structural diagram of an air commissioning device for a gas blower provided by an embodiment of the present invention;

[0057] Figure 8 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. Detailed implementation manners

[0058] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0059] In response to the problems in the background art, an embodiment of the present invention provides an air commissioning system for a gas blower. Figure 1 A schematic structural diagram of an air commissioning system for a gas blower provided by an embodiment of the present invention, refer to Figure 1, the gas blower to be tested includes a blower 101, a hydraulic coupling 102, a motor 103, an intake pipe 104, and an outlet pipe 105. A gas inlet 111 and an intake air vent 109 are provided on the intake pipe 104. Among them, the gas inlet 111 is used to connect to gas, and the intake air vent 109 is used to introduce air into the blower 101 during the air test. A gas outlet 112 and an outlet air vent 110 are provided on the outlet pipe 105. Among them, the gas outlet 112 is used to blow out gas, and the outlet air vent 110 is used to blow out air during the air test. The air test system of the gas blower includes: a vibration sensor 106, an intake air vent regulating valve 107, an outlet air vent regulating valve 108, and a remote controller 113. The vibration sensor 106 is arranged at the blower 101 and is used to collect the vibration data of the blower 101. The intake air vent regulating valve 107 is arranged at the intake air vent 109 of the intake pipe 104 and is used to adjust the opening degree of the intake air vent 109 on the intake pipe 104. The outlet air vent regulating valve 108 is arranged at the outlet air vent 110 of the intake pipe 104 and is used to adjust the opening degree of the outlet air vent 110 on the outlet pipe 105. The remote controller 113 is respectively connected to the motor 103, the hydraulic coupling 102, the vibration sensor 106, the intake air vent regulating valve 107, and the outlet air vent regulating valve 108 by communication connection or electrical connection, and is used to control the start and stop of the motor 103, control the variable ratio of the hydraulic coupling 102, receive the vibration data collected by the vibration sensor 106, and adjust the opening degrees of the intake air vent regulating valve 107 and the outlet air vent regulating valve 108. The remote controller 113 may include multiple processors, and can implement the air test method of the gas blower, determine whether the gas blower is operating normally according to the vibration data of the blower 101 at each rotational speed, so as to complete the air test of the gas blower.

[0060] An embodiment of the present invention also provides an air test method for a gas blower. The air test method for the gas blower is implemented on the basis that both the blower gas inlet on the intake pipe and the blower gas outlet on the outlet pipe are closed. Figure 2 is a schematic flow chart of an air test method for a gas blower provided by an embodiment of the present invention. Refer to Figure 2 , the air test method for the gas blower includes:

[0061] S101. Adjust the intake air vent to a first opening degree.

[0062] Among them, the intake air vent refers to the air vent on the intake pipe of the blower, and air can be input into the blower through the intake air vent during the air test. The first opening degree is the primary opening degree of the intake air vent during the air test and corresponds to the rotational speed of the blower under the no-load state of the motor.

[0063] Specifically, an air intake to atmosphere port regulating valve is provided at the air intake to atmosphere port. The air intake to atmosphere port regulating valve can adjust the opening degree of the air intake to atmosphere port. The air intake to atmosphere port regulating valve can be an electronic switch valve, and can adjust the opening degree of the air intake to atmosphere port according to the received control signal. Exemplarily, the method of adjusting the air intake to atmosphere port to the first opening degree can be to send a first opening degree control signal to the air intake to atmosphere port regulating valve to control the air intake to atmosphere port regulating valve to set the opening degree of the air intake to atmosphere port to the first opening degree. The first opening degree is a preset value, which is related to the rotational speed of the fan and the pipe diameter of the air outlet to atmosphere port under the no-load operation state of the motor. For example, if the rotational speed of the fan is 1000 revolutions per minute and the pipe diameter of the air outlet to atmosphere port is DN400 under the no-load operation state of the motor, the first opening degree can be set to 5%. Adjusting the air intake to atmosphere port to the first opening degree corresponding to the rotational speed of the fan under the no-load operation state of the motor can reduce the starting current when the motor starts and prevent equipment failures caused by excessive load. It should be particularly noted that the meaning of the no-load operation of the motor is the operating state of the motor when the speed ratio of the fan to the motor set by the hydraulic coupling is 0%. However, when the speed ratio of the fan to the motor set by the hydraulic coupling is 0%, the fan will still rotate following the motor at a relatively low speed.

[0064] S102. Adjust the air outlet to atmosphere port to full open.

[0065] Among them, the air outlet to atmosphere port refers to the opening to the atmosphere on the air outlet pipe of the fan, and air can be blown out from the air outlet to atmosphere port during the air test. Full open means that the opening degree of the air outlet to atmosphere port is 100%.

[0066] Specifically, an air outlet to atmosphere port regulating valve is provided at the air outlet to atmosphere port. The air outlet to atmosphere port regulating valve can adjust the opening degree of the air outlet to atmosphere port. The air outlet to atmosphere port regulating valve can be an electronic switch valve, and can adjust the opening degree of the air outlet to atmosphere port according to the received control signal. Exemplarily, the method of adjusting the air outlet to atmosphere port to full open can be to send a full open control signal to the air outlet to atmosphere port regulating valve to control the air outlet to atmosphere port regulating valve to set the opening degree of the air outlet to atmosphere port to 100%. Before the motor starts, adjusting the air outlet to atmosphere port to full open can not only reduce the sudden increase in pressure at the air outlet to atmosphere port after speed regulation, but also reduce the number of times of controlling the regulating valve during the test.

[0067] S103. Control the motor to start under no load.

[0068] Among them, starting under no load means that the motor starts when the speed ratio of the fan to the motor set by the hydraulic coupling is 0%. The motor refers to the electric motor serving as the power source in the gas blower, and this motor is connected to the fan through a hydraulic coupling and can drive the fan to rotate.

[0069] Specifically, first, set the speed ratio of the hydraulic coupling to 0%. Then control the motor to start. In the case of the motor starting under no-load conditions, the load of the motor reaches the minimum load. When the speed ratio of the fan to the motor set by the hydraulic coupling is 0%, the fan will still rotate with the motor at a relatively low speed. When the motor starts or operates under no-load conditions, generally the speed of the fan is below 1000 revolutions per minute. When the opening degree of the air intake to the atmosphere port is the first opening degree, starting the motor under no-load conditions can reduce the starting current of the motor to the minimum, reduce the situation of high current caused by excessive starting load of the motor, and reduce the probability of motor damage.

[0070] S104. After the speed of the fan is stable, gradually increase the opening degree of the air intake to the atmosphere port from the first opening degree to the second opening degree.

[0071] Among them, the speed being stable means that the speed change rate of the fan is less than the preset value or the speed is stable within the preset speed range within the preset time period. For example, the speed of the fan remains within 1000 revolutions per minute for 1 minute continuously. Gradually increasing means increasing multiple times in sequence from small to large. The second opening degree is the maximum opening degree of the air intake to the atmosphere port during the air trial of the machine, corresponding to the speed of the fan under the maximum daily load state of the motor. Exemplarily, the maximum daily load of the motor can be less than or equal to the rated load of the motor.

[0072] Specifically, first, during the process of the motor starting under no-load conditions, the motor speed can be collected by using a speed sensor. Then, after detecting that the motor speed is stable, the air intake to the atmosphere port regulating valve can be controlled to gradually increase the opening degree of the air intake to the atmosphere port from the first opening degree to the second opening degree. Among them, before each adjustment of the opening degree of the air intake to the atmosphere port, it is necessary to ensure that the vibration data of the fan at this opening degree has been collected. The collection of the vibration data of the fan and the adjustment of the corresponding fan speed are described in detail in the subsequent steps S105 and S106. The opening degree of the air intake to the atmosphere port corresponds one-to-one with the fan speed or the opening degree of the air intake to the atmosphere port corresponds to multiple fan speeds. Exemplarily, if the air trial of the gas blower needs to test the vibration data of the fan at 2200 revolutions per minute, the opening degree of the air intake to the atmosphere port can be set to 15% correspondingly. Or, if the air trial of the gas blower needs to test the vibration data of the fan in the range of 1500 to 2000 revolutions per minute, the opening degree of the air intake to the atmosphere port can be set to 10% correspondingly, and the opening degree of the air intake to the atmosphere port remains 10% during the speed adjustment within 1500 to 2000 revolutions per minute.

[0073] S105. During the process of gradually increasing the opening degree of the air intake to the atmosphere port from the first opening degree to the second opening degree, adjust the fan speed according to the opening degree of the air intake to the atmosphere port.

[0074] Specifically, after each adjustment of the opening degree of the air inlet to the air outlet, the rotational speed of the fan is correspondingly adjusted. Exemplarily, on the one hand, if the opening degree of the air inlet to the air outlet corresponds to a rotational speed value of the fan, the fan is adjusted to the corresponding rotational speed value according to the opening degree of the air outlet. On the other hand, if the opening degree of the air inlet to the air outlet corresponds to multiple rotational speed values of the fan, the fan is adjusted to the corresponding rotational speed values in ascending order of rotational speed according to the opening degree of the air outlet, and the next rotational speed adjustment is carried out after each adjustment of the rotational speed value and the acquisition of vibration data is completed. The method of adjusting the rotational speed value of the fan can be to send a signal to control the rotational speed ratio of the hydraulic coupling.

[0075] S106. After each adjustment of the rotational speed of the fan, obtain the vibration data of the fan.

[0076] Specifically, the vibration data of the fan refers to the vibration-related data of the fan, which can include at least one of vibration displacement and vibration frequency. After each adjustment of the rotational speed of the fan, after the rotational speed of the fan is stable, obtain the vibration data of the fan. Exemplarily, the rotational speed of the fan can be detected after adjusting the hydraulic coupling. After detecting that the rotational speed of the fan is stable, obtain the vibration displacement of the fan within a preset time period, and the preset time period can be from 3 minutes to 20 minutes.

[0077] S107. Judge the state of the gas blower according to the vibration data of the fan.

[0078] Among them, the state of the gas blower refers to the operating state of the gas blower, which can include healthy and faulty.

[0079] Specifically, at the same time of obtaining the vibration data of the fan or after completing the acquisition of the vibration data of the fan at this rotational speed, the operating state of the gas blower can also be judged according to the vibration data of the fan. Exemplarily, when the vibration displacement of the fan is higher than the vibration threshold, it is determined that the gas blower has a fault, otherwise it is determined that the gas blower is normal and the acquisition of vibration data at the next rotational speed continues. If the vibration data of the gas blower is within the vibration threshold at all preset rotational speeds, it can be determined that the trial run is successful and the gas blower is determined to be in a healthy state.

[0080] The air test method for the gas blower provided in this embodiment sets the opening degree of the air intake to the atmosphere port to the first opening degree corresponding to the rotational speed of the blower under the no-load state of the motor before clicking to start. Then, the motor is controlled to start under no load, which can reduce the starting load of the motor, thereby reducing the starting current of the motor and preventing the starting damage of the high-voltage motor. After the blower starts stably, before adjusting the rotational speed of the blower each time, the opening degree of the air outlet to the atmosphere port is adjusted according to the rotational speed to be detected by the blower, which can prevent the abnormal failure of the test caused by the turbulence after the blower speeds up. The opening degree of the air outlet to the atmosphere port is set to fully open, and only the opening degree of the air intake to the atmosphere port is adjusted during the test, which can increase the control workload of the staff or the control device, and can prevent the sudden increase in the pressure of the air outlet to the atmosphere port caused by the small diameter of the air outlet to the atmosphere port and the failure to timely adjust the opening degree of the air outlet to the atmosphere port during the test, further reducing the possibility of abnormal failure of the test.

[0081] Optionally, Figure 3 is a schematic flowchart of another air test method for the gas blower provided by an embodiment of the present invention. Referring to Figure 3 , on the basis of the foregoing embodiment, the air test method for the gas blower includes:

[0082] S201. Adjust the air intake to the atmosphere port to the first opening degree.

[0083] S202. Adjust the air outlet to the atmosphere port to fully open.

[0084] S203. Control the motor to start under no load.

[0085] Steps S201, S202, and S203 respectively correspond to and are the same as the contents of the foregoing steps S101, S102, and S103, and will not be elaborated here.

[0086] S204. After the rotational speed of the blower under no load is stable, gradually increase the opening degree of the air intake to the atmosphere port from the first opening degree to the third opening degree.

[0087] Among them, the difference between two adjacent opening degrees of the air intake to the atmosphere port is equal to the first preset opening degree. The third opening degree is greater than the first opening degree and less than the second opening degree, and the rotational speed of the blower corresponding to the third opening degree is less than the lower limit value of the surge zone of the blower. The surge zone refers to the rotational speed range where the blower surges, and the upper and lower limit values of the surge zone of the blower are related to the self-structure of the blower.

[0088] Specifically, after detecting that the rotational speed of the blower under no load is stable, gradually increase the opening degree of the air intake to the atmosphere port from the first opening degree to the third opening degree. After adjusting the opening degree of the air intake to the atmosphere port each time and completing the vibration data acquisition at the rotational speed of the blower corresponding to the opening degree of the air intake to the atmosphere port, further adjust the opening degree of the air intake to the atmosphere port until the vibration data acquisition at the rotational speed of the blower corresponding to the third opening degree is completed.

[0089] S205. During the process of gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the third opening degree, after each adjustment of the opening degree of the air intake to the atmosphere, the rotational speed of the fan is correspondingly adjusted.

[0090] Specifically, during the process of gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the third opening degree, after each adjustment of the opening degree of the air intake to the atmosphere, it is necessary to correspondingly adjust the rotational speed of the fan according to the opening degree of the air intake to the atmosphere. The method of adjusting the rotational speed of the fan can be to adjust the speed ratio of the hydraulic coupling. Exemplarily, if the first opening degree is 5%, the third opening degree is 40%, and an opening degree of 15% is also set between the first opening degree and the third opening degree. When the opening degree of the air intake to the atmosphere is increased from 5% to 15%, the rotational speed of the fan is correspondingly adjusted from 2000 revolutions per minute to 2200 revolutions per minute. After the acquisition of the vibration data at the rotational speed of 2200 revolutions per minute is completed, according to the opening degree of 15%, the rotational speed of the fan is further adjusted from 2200 revolutions per minute to 2400 revolutions per minute until the acquisition of the vibration data at all the rotational speed values corresponding to the opening degree of 15% is completed. Then, the opening degree of the air intake to the atmosphere is increased from 15% to 40%. Similar to the process when the opening degree of the air intake to the atmosphere is 15%, the acquisition of the vibration data at all the rotational speeds of the fan corresponding to the opening degree of 40% is sequentially completed, and then the adjustment of the rotational speed of the fan is stopped.

[0091] S206. During the process of gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the third opening degree, after each adjustment of the rotational speed of the fan, the first preset time is set for static placement.

[0092] Specifically, during the process of gradually increasing the opening degree of the air intake to the atmosphere from the first opening degree to the third opening degree, after each adjustment of the opening degree of the air intake to the atmosphere and the rotational speed of the fan, it is necessary to set the first preset time for static placement to ensure the stable operation of the fan. The first preset time can be measured through experiments. After the adjustment of the rotational speed of the fan, the first preset time can ensure that the fluctuation range of the rotational speed of the fan within the preset time is within the fluctuation threshold.

[0093] S207. Obtain the vibration data of the fan within the second preset time after static placement.

[0094] Specifically, after each adjustment of the opening degree of the air intake to the atmosphere and the rotational speed of the fan, and after setting the first preset time for static placement, the vibration data of the fan within the second preset time after the first preset time of static placement can be started to be obtained. The method of obtaining the vibration data can be to respectively set vibration sensors at the four corners of the placement base of the fan or on the four sides of the fan, and use the vibration sensors to collect the vibration data of the fan. The vibration data can include vibration displacement.

[0095] S208. Increase the opening degree of the air intake to the atmosphere from the third opening degree to the second opening degree.

[0096] Wherein, the difference between the second opening degree and the third opening degree of the air inlet to the air port is equal to the second preset opening degree, and the second preset opening degree is greater than the first preset opening degree; the surge range of the fan is greater than the fan speed corresponding to the third opening degree and less than the fan speed corresponding to the second opening degree.

[0097] Specifically, the fan speed corresponding to the second opening degree is greater than the upper limit value of the surge zone. Increasing the opening degree of the air inlet to the air port from the third opening degree to the second opening degree will directly adjust the fan speed from below the lower limit of the surge zone to above the surge zone. The adjustment of the fan speed directly skips the surge zone, which can prevent the gas blower from tripping during the air commissioning process due to fan surge, thus causing abnormal failure of the commissioning.

[0098] S209. After increasing the opening degree of the air inlet to the air port from the third opening degree to the second opening degree, adjust the fan speed according to the second opening degree.

[0099] Specifically, after increasing the opening degree of the air inlet to the air port from the third opening degree to the second opening degree, it is necessary to adjust the fan speed according to the opening degree of the air inlet to the air port. The method of adjusting the fan speed can be to adjust the speed ratio of the hydraulic coupling. Exemplarily, when the opening degree of the air inlet to the air port is increased from 40% to 58%, the fan speed is correspondingly adjusted from 2,800 revolutions per minute to 3,800 revolutions per minute.

[0100] S210. After increasing the opening degree of the air inlet to the air port from the third opening degree to the second opening degree and adjusting the fan speed, stand still for the first preset time.

[0101] Specifically, after increasing the opening degree of the air inlet to the air port from the third opening degree to the second opening degree and correspondingly adjusting the fan speed, it is necessary to stand still for the first preset time to ensure the stable operation of the fan. The first preset time can be measured through experiments. During the first preset time after adjusting the fan speed, it can ensure that the fluctuation range of the fan speed within the preset time is within the fluctuation threshold.

[0102] S211. Obtain the vibration data of the fan within the third preset time after standing still.

[0103] Specifically, the third preset time is greater than the second preset time. Exemplarily, the second preset time is 3 minutes, and the third preset time can be 20 minutes. The fan speed corresponding to the second opening degree of the air inlet to the air port is the loaded speed of the fan, where the loaded speed is the speed with the highest frequency used during the operation of the fan. Since the span of the fan speed adjustment this time is relatively large, and the fan speed corresponding to the second opening degree is the most frequently used speed during the daily operation of the gas blower, the vibration data at the rated speed corresponding to the second opening degree is of greater significance for the air commissioning. The reliability of the commissioning can be increased by increasing the vibration data acquisition time.

[0104] S212. Determine the status of the gas blower based on the vibration data of the blower.

[0105] The content of step S212 is the same as that of the aforementioned step S107 and will not be elaborated here.

[0106] Since the gas blower does not operate in the surge zone during its daily operation, the trial run in the surge zone is meaningless and likely to increase the failure rate of the trial run. The air trial run method of the gas blower provided in this embodiment can quickly cross the surge zone of the blower during the process of increasing the blower speed, prevent the blower from tripping due to blower surge, prevent abnormal failure of the air trial run, and further improve the success rate and reliability of the air trial run.

[0107] Optionally, Figure 4 This is a flowchart showing a method for determining the status of a gas blower based on the vibration data of the blower provided by an embodiment of the present invention. Refer to Figure 4 , on the basis of the foregoing embodiment, the method for determining the status of a gas blower based on the vibration data of the blower includes:

[0108] S301. Determine whether all the vibration data is less than the vibration threshold.

[0109] The vibration threshold is a judgment threshold for determining whether the vibration data exceeds the normal range and can correspond one-to-one with the blower speed.

[0110] Specifically, set the vibration threshold corresponding to the blower speed according to the experimental data, compare the obtained vibration data of the blower with the vibration threshold, and determine whether all the vibration data is less than the corresponding vibration threshold. If the vibration data of the blower exceeds the vibration threshold corresponding to the current speed of the blower, it can be determined that the vibration data of the blower is abnormal and that the blower has a fault. If the vibration data of the blower is within the vibration threshold corresponding to the current speed of the blower, it can be determined that the vibration data of the blower is normal and that the blower is operating normally at this time. Exemplarily, determine whether a blower with a speed of 2400 revolutions per minute satisfies that the vibration displacement is less than 50 μm and the change range of the vibration displacement is within 5 μm. Determine whether a blower with a speed of 3600 revolutions per minute satisfies that the vibration displacement is less than 60 μm and the change range of the vibration displacement is within 8 μm.

[0111] S302. If all the vibration data is less than the vibration threshold, determine that the gas blower test is successful.

[0112] Specifically, if the vibration data collected at each blower speed is less than the corresponding vibration threshold, it can be determined that the vibration data of the gas blower is within the normal range, and further determine that the air test of the gas blower is successful.

[0113] S303. If there is a value greater than the vibration threshold in the vibration data, it is determined that the test of the gas blower fails.

[0114] Specifically, if there is a value greater than the vibration threshold in the vibration data, it can be determined that the vibration data of the gas blower is on the high side, which may cause damage to the gas blower or other related equipment, and then it is determined that the air test of the gas blower fails.

[0115] The method for judging the state of the gas blower according to the vibration data of the blower provided in this embodiment compares the vibration threshold corresponding to the blower speed with the vibration data collected at this speed, and determines whether the gas blower is in a healthy state according to the comparison result, so as to determine whether the test fails or succeeds. Among them, the vibration threshold is a preset value obtained through test, and this preset value can accurately determine the state of the gas blower, which can further improve the reliability of the test.

[0116] Optionally, Figure 5 is a schematic flowchart of another method for judging the state of the gas blower according to the vibration data of the blower provided in the embodiment of the present invention. Refer to Figure 5 , on the basis of the foregoing embodiment, the method for judging the state of the gas blower according to the vibration data of the blower includes:

[0117] S401. Judge whether the change amount of the vibration data within the fourth preset time is less than the change threshold.

[0118] Among them, the change threshold is a judgment threshold for judging whether the vibration data is stable, and can correspond one by one to the blower speed.

[0119] Specifically, the change threshold corresponding to the blower speed is set according to the experimental data. The fourth preset time can be a preset time value less than or equal to the acquisition time (the second preset time or the third preset time) of each group of vibration data. A group of vibration data refers to the vibration data collected by the blower at the same speed. The change amount of the vibration data within the fourth preset time being less than the change threshold can indicate that the vibration data fluctuates less and is in a stable state.

[0120] S402. Judge whether the vibration data is less than the vibration threshold.

[0121] Among them, the vibration threshold is a judgment threshold for judging whether the vibration data exceeds the normal range, and can correspond one by one to the blower speed.

[0122] Specifically, a vibration threshold corresponding to the fan speed is set according to experimental data, and the obtained vibration data of the fan is compared with the vibration threshold to determine whether the vibration data is less than the corresponding vibration threshold. If the vibration data of the fan exceeds the vibration threshold corresponding to the current fan speed, it can be determined that the vibration data of the fan is abnormal, and it can be determined that the fan has a fault. If the vibration data of the fan is within the vibration threshold corresponding to the current fan speed, it can be determined that the vibration data of the fan is normal, and it can be determined that the fan is operating normally at this time. Exemplarily, it is determined whether a fan with a speed of 2400 revolutions per minute satisfies that the vibration displacement is below 50 μm and the change range of the vibration displacement is within 5 μm. It is determined whether a fan with a speed of 3600 revolutions per minute satisfies that the vibration displacement is below 60 μm and the change range of the vibration displacement is within 8 μm.

[0123] S403. If the change amount of the vibration data within the fourth preset time is less than the change threshold and the vibration data is less than the vibration threshold, it is determined that the air test of the gas blower is successful.

[0124] Specifically, if the change amount of the vibration data within the fourth preset time is less than the change threshold and the vibration data is less than the vibration threshold, it indicates that the vibration data is both stable and within the normal range, and thus it can be determined that the air test of the gas blower is successful.

[0125] S404. If the change amount of the vibration data within the fourth preset time is greater than the change threshold or / and there is a value in the vibration data that is greater than the vibration threshold, it is determined that the air test of the gas blower fails.

[0126] Specifically, if the change amount of the vibration data within the fourth preset time is greater than the change threshold, it indicates that the change amount of the vibration data is large and the vibration degree is unstable. If there is a value in the vibration data that is greater than the vibration threshold, it indicates that there is a vibration value in the vibration data that is greater than the normal range. If at least one of the foregoing judgment results occurs, it can be determined that the air test of the gas blower fails.

[0127] The air test method of the gas blower provided in this embodiment, on the basis of the foregoing embodiment, introduces a change threshold to determine whether the vibration data is stable. When the change amount of the vibration data within the fourth range is greater than the change threshold, it is determined that the vibration data is unstable, thereby determining that the air test of the gas blower fails. Judging whether the vibration data is normal based on both the change amount and the actual value of the vibration data, and then judging the operating state of the gas blower, can further improve the reliability of the test.

[0128] Optionally, Figure 6 is a schematic flowchart of another air test method of the gas blower provided by an embodiment of the present invention. Referring to Figure 6 , on the basis of the foregoing embodiment, the air test of the gas blower includes:

[0129] S501. Set the opening degree of the air intake to the atmosphere to 5%.

[0130] S502. Set the opening degree of the air outlet to the atmosphere to fully open.

[0131] S503. Control the speed ratio of the hydraulic coupling to 0%.

[0132] S504. Start the motor.

[0133] S505. After the current of the motor drops back and the fluctuation error is less than 0.1 A, continuously measure the vibration displacement of the fan for 1 minute.

[0134] S506. Slowly set the opening degree of the air intake to the atmosphere to 10%.

[0135] Among them, slowly setting means that the adjustment speed is less than or equal to 1% per second.

[0136] S507. Control the speed ratio of the hydraulic coupling to be set to any value between 2% and 5% to control the corresponding speed value of the fan speed at 1500 to 2000 revolutions per minute.

[0137] Among them, the speed ratio refers to the set value of the ratio of the fan speed to the motor speed, which can represent the control ratio of the hydraulic coupling. The actual speed of the fan is positively correlated with the speed ratio of the hydraulic coupling and negatively correlated with the opening degree of the air outlet to the atmosphere.

[0138] S508. Continuously measure the vibration displacement of the fan for 3 minutes.

[0139] S509. Slowly open the opening degree of the air intake to the atmosphere to 15% and set the speed ratio of the hydraulic coupling to 22% to control the fan speed at 2200 revolutions per minute.

[0140] S510. Continuously measure the vibration displacement of the fan for 3 minutes.

[0141] S511. Maintain the opening degree of the air intake to the atmosphere at 20% and set the speed ratio of the hydraulic coupling to 35% to control the fan speed at 2600 revolutions per minute.

[0142] S512. Continuously measure the vibration displacement of the fan for 3 minutes.

[0143] S513. Maintain the opening degree of the air intake to the atmosphere at 30% and set the speed ratio of the hydraulic coupling to 48% to control the fan speed at 2800 revolutions per minute.

[0144] S514. Continuously measure the vibration displacement of the fan for 3 minutes.

[0145] S515 maintains the opening of the intake air to the atmosphere at 40% and sets the hydraulic coupling to approximately 58% to control the fan speed above 3600 revolutions per minute.

[0146] S516. Continuously measure the vibration displacement of the fan for 20 minutes.

[0147] S517. If the vibration displacements at the four detection points of the fan are always below 50 μm and the change amount per unit time is less than 2 μm, it is determined that the air trial of the gas blower is successful; otherwise, it is determined that the air trial of the gas blower fails.

[0148] S518. Adjust the speed ratio of the hydraulic coupling to 0. When the fan speed drops to a stable value, control the motor to stop running.

[0149] The air trial method of the gas blower provided in this embodiment sets the opening of the intake air to the atmosphere to the first opening corresponding to the fan speed in the no-load state of the motor before clicking to start, and then controls the motor to start without load, which can reduce the starting load of the motor, thereby reducing the starting current of the motor and preventing damage to the high-voltage motor during startup. After the fan starts stably, before each adjustment of the fan speed, adjust the opening of the outlet air to the atmosphere according to the fan speed to be detected, which can prevent abnormal failure of the trial due to turbulent flow caused after the fan speeds up. The opening of the outlet air to the atmosphere is set to fully open, and only the opening of the intake air to the atmosphere is adjusted during the trial, which can reduce the control workload of the staff or control equipment, and can prevent the sudden increase in the pressure of the outlet air to the atmosphere caused by the small diameter of the outlet air to the atmosphere and the failure to timely adjust the opening of the outlet air to the atmosphere during the trial, further reducing the possibility of abnormal failure of the trial.

[0150] The embodiment of the present invention also provides an air trial device for a gas blower. Figure 7 It is a schematic structural diagram of an air trial device for a gas blower provided in an embodiment of the present invention. Refer to Figure 7, the air test device 700 of the gas blower includes: a first opening degree adjustment unit 701, a second opening degree adjustment unit 702, a motor starting unit 703, a third opening degree adjustment unit 704, a blower speed adjustment unit 705, a vibration data acquisition unit 706, and a state judgment unit 707. The first opening degree adjustment unit 701 is used to adjust the air inlet to the air opening to the first opening degree; the second opening degree adjustment unit 702 is used to adjust the air outlet to the air opening to be fully open; the motor starting unit 703 is used to control the motor to start without load; the third opening degree adjustment unit 704 is used to gradually increase the opening degree of the air inlet to the air opening from the first opening degree to the second opening degree after the speed of the blower is stable; the blower speed adjustment unit 705 is used to correspondingly adjust the blower speed according to the opening degree of the air inlet to the air opening during the process of gradually increasing the opening degree of the air inlet to the air opening from the first opening degree to the second opening degree; the vibration data acquisition unit 706 is used to acquire the vibration data of the blower after each adjustment of the blower speed; the state judgment unit 707 is used to judge the state of the gas blower according to the vibration data of the blower; wherein, the opening degree of the air inlet to the air opening corresponds one-to-one with the blower speed.

[0151] An embodiment of the present invention also provides an electronic device for performing an air test on a gas blower. Figure 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. Refer to Figure 8 , the electronic device 800 includes: a vibration sensor 106, an air inlet to air opening regulating valve 107, an air outlet to air opening regulating valve 108, at least one processor 801, and a memory 802 connected to the at least one processor 801; wherein, the memory 802 stores a computer program executable by the at least one processor 801, and the computer program is executed by the at least one processor 801 so that the at least one processor can execute the air test method of the gas blower in any one of the foregoing embodiments.

[0152] The air test method, device, and electronic device of the gas blower provided in this embodiment set the opening degree of the air inlet to the air opening to the first opening degree corresponding to the speed of the blower under the no-load state of the motor before clicking to start, and then control the motor to start without load, which can reduce the starting load of the motor, thereby reducing the starting current of the motor and preventing the starting damage of the high-voltage motor. After the blower starts stably, before each adjustment of the blower speed, adjusting the opening degree of the air outlet to the air opening according to the speed that the blower needs to detect can prevent the abnormal failure of the test caused by the turbulent flow after the blower speeds up. The opening degree of the air outlet to the air opening is set to be fully open, and only the opening degree of the air inlet to the air opening is adjusted during the test, which can improve the control workload of the staff or the control device, and can prevent the sudden increase in the pressure of the air outlet to the air opening caused by the small diameter of the air outlet to the air opening and the failure to timely adjust the opening degree of the air outlet to the air opening during the test, further reducing the possibility of abnormal failure of the test.

[0153] The above products can execute the methods provided by any embodiment of the present invention, and have the corresponding functional modules and beneficial effects for executing the methods.

[0154] Note that the above is only the preferred embodiment of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, combinations, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for air testing a gas blower, characterized in that, it includes: Adjust the air inlet to the air opening to the first opening degree; Adjust the air outlet to the air opening to full open; Control the motor to start without load; After the speed of the blower is stable, gradually increase the opening degree of the air inlet to the air opening from the first opening degree to the second opening degree; During the process of gradually increasing the opening degree of the air inlet to the air opening from the first opening degree to the second opening degree, adjust the blower speed correspondingly according to the opening degree of the air inlet to the air opening; After each adjustment of the blower speed, obtain the vibration data of the blower; Judge the state of the gas blower according to the vibration data of the blower; Wherein, the opening degree of the air inlet to the air opening corresponds one-to-one with the blower speed.

2. The air testing method of the gas blower according to claim 1, characterized in that, After the speed of the blower is stable, gradually increasing the opening degree of the air inlet to the air opening from the first opening degree to the second opening degree includes: After the speed of the blower running without load is stable, gradually increase the opening degree of the air inlet to the air opening from the first opening degree to the third opening degree, wherein the difference between two adjacent opening degrees of the air inlet to the air opening is equal to the first preset opening degree; Increase the opening degree of the air inlet to the air opening from the third opening degree to the second opening degree, wherein the difference between the second opening degree and the third opening degree of the air inlet to the air opening is equal to the second preset opening degree, and the second preset opening degree is greater than the first preset opening degree; the surge range of the blower is greater than the blower speed corresponding to the third opening degree and less than the blower speed corresponding to the second opening degree.

3. The air testing method of the gas blower according to claim 2, characterized in that, After each adjustment of the blower speed, obtaining the vibration data of the blower includes: During the process of gradually increasing the opening degree of the air inlet to the air opening from the first opening degree to the third opening degree, after each adjustment of the blower speed, stand still for the first preset time; Obtain the vibration data of the blower within the second preset time after standing still; During the process of increasing the opening degree of the air inlet to the air opening from the third opening degree to the second opening degree, after adjusting the blower speed, stand still for the first preset time; Obtain the vibration data of the blower within the third preset time after standing still; Wherein, the third preset time is greater than the second preset time.

4. The air testing method of the gas blower according to claim 1, characterized in that, The blower speed corresponding to the second opening degree of the air inlet to the air opening is the loaded speed of the blower, wherein the loaded speed is the speed with the highest frequency used by the blower during operation.

5. The air testing method of the gas blower according to claim 1, characterized in that, Judging the state of the gas blower according to the vibration data of the blower includes: Judge whether the vibration data are all less than the vibration threshold; If the vibration data are all less than the vibration threshold, it is determined that the gas blower test is successful; If there are values greater than the vibration threshold in the vibration data, it is determined that the gas blower test fails.

6. The air testing method of the gas blower according to claim 1, characterized in that, Judging the state of the gas blower according to the vibration data of the blower, including: Judging whether the change amount of the vibration data within the fourth preset time is less than the change threshold; Judging whether the vibration data is less than the vibration threshold; If the change amount of the vibration data within the fourth preset time is less than the change threshold and the vibration data is less than the vibration threshold, it is determined that the air test of the gas blower is successful; If the change amount of the vibration data within the fourth preset time is greater than the change threshold or / and there is a value in the vibration data that is greater than the vibration threshold, it is determined that the air test of the gas blower fails.

7. The air test method of the gas blower according to claim 1, characterized in that, the vibration data includes vibration displacement data.

8. The air test method of the gas blower according to claim 1, characterized in that, Controlling the motor to start without load, including: Setting the speed ratio of the hydraulic coupling between the blower and the motor to 0; Starting the motor.

9. An air test device for a gas blower, characterized in that, including: A first opening degree adjusting unit for adjusting the air inlet to the open air port to the first opening degree; A second opening degree adjusting unit for adjusting the air outlet to the open air port to the fully open state; A motor starting unit for controlling the motor to start without load; A third opening degree adjusting unit for gradually increasing the opening degree of the air inlet to the open air port from the first opening degree to the second opening degree after the speed of the blower is stable; A blower speed adjusting unit for correspondingly adjusting the blower speed according to the opening degree of the air inlet to the open air port during the process of gradually increasing the opening degree of the air inlet to the open air port from the first opening degree to the second opening degree; A vibration data acquisition unit for acquiring the vibration data of the blower each time the blower speed is adjusted; A state judging unit for judging the state of the gas blower according to the vibration data of the blower; wherein, the opening degree of the air inlet to the open air port corresponds to the blower speed one by one.

10. An electronic device, characterized in that, including: A vibration sensor, an air inlet to the open air port regulating valve, an air outlet to the open air port regulating valve, at least one processor and a memory connected to the at least one processor; wherein, the memory stores a computer program executable by the processor, and the computer program is executed by the processor so that the at least one processor can execute the air test method of the gas blower according to any one of claims 1-8.

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