A control adjustment method and system for reducing vibration of a medium-speed coal mill

Abstract

The present disclosure provides a control adjustment method and system for reducing the vibration of a medium-speed coal mill, which comprises the following steps: during the operation of the medium-speed coal mill, the vibration value, the loading force, the current output, the separator speed and the coal mill ventilation are acquired in real time; it is judged whether the vibration value is less than the vibration threshold value, if yes, the running parameters of the coal mill are kept; otherwise, the loading force is controlled to be reduced to obtain the vibration value after the loading force is adjusted, if the vibration value after the loading force is adjusted is less than the vibration threshold value, the running parameters of the coal mill are kept; if the vibration value after the loading force is adjusted is greater than or equal to the vibration threshold value, it is judged whether the loading force is reduced by a first preset proportion, if not, the loading force is continuously controlled to be reduced to reacquire the vibration value after the loading force is adjusted for judgment; if yes, the current output, the separator speed and the coal mill ventilation are controlled to be adjusted to realize the control adjustment of the vibration of the medium-speed coal mill. According to the method of the present disclosure, the vibration of the medium-speed coal mill can be reduced, and the safe operation of the equipment is ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of vibration control adjustment of medium-speed coal mills, and particularly relates to a control adjustment method and system for reducing vibration of a medium-speed coal mill. BACKGROUND

[0002] Most of the pulverized coal boilers of modern large coal-fired power generating units are equipped with medium-speed coal mill direct-fired pulverizing systems. The power transmission procedure of the medium-speed coal mill is: motor (counteracting the foundation) -> speed reducer (counteracting the foundation) -> transmission support -> grinding disc -> (raw coal layer) -> grinding roller -> grinding roller support -> grinding roller pressing frame -> guide plate -> outer cylinder -> base -> foundation. The rotating components in the power process are motor, speed reducer, transmission support, grinding disc, grinding roller, and slag scraper, the vibration characteristics of these components are rotating mechanical characteristics, and the vibration measurement positions are at the foundation and bearing of the motor or speed reducer. The output speed of the speed reducer is only 23.1 rpm, which belongs to low-speed heavy-load equipment, and the vibration generally does not exceed the standard.

[0003] However, vibration problems still exist to varying degrees in the actual operation of the medium-speed coal mill. When the vibration of the coal mill is severe, it can cause fatigue fracture of the weld of the powder conveying pipe, coal powder leakage, environmental pollution, increase the risk of coal powder spontaneous combustion, and reduce the load carrying capacity of the unit. Due to the deep load regulation of the coal-fired unit and the deterioration of the coal quality entering the furnace, and the presence of many impurities in the coal, the vibration of the medium-speed coal mill occurs more and more frequently. Therefore, there is an urgent need for a control adjustment method for the vibration of the medium-speed coal mill that can effectively reduce the impact of vibration to ensure the safe operation of the equipment. SUMMARY

[0004] The present disclosure aims to at least partially solve one of the technical problems in the related art. To this end, the present disclosure provides a control adjustment method and system for reducing vibration of a medium-speed coal mill, the main purpose of which is to reduce the vibration of the medium-speed coal mill, thereby better ensuring the safe operation of the equipment.

[0005] According to a first aspect of the present disclosure, a control adjustment method for reducing vibration of a medium-speed coal mill is provided, comprising:

[0006] During the operation of the medium-speed coal mill, the vibration value, loading force, current output, separator speed, and coal mill ventilation of the medium-speed coal mill are acquired in real time;

[0007] It is determined whether the vibration value is less than a vibration threshold value, and if so, the operating parameters of the coal mill are maintained;

[0008] If the vibration value is greater than or equal to the vibration threshold value, the loading force is controlled to be reduced to obtain an adjusted vibration value of the medium-speed coal mill, and if the adjusted vibration value of the loading force is less than the vibration threshold value, the operating parameters of the coal mill are maintained;

[0009] If the vibration value after the load adjustment is greater than or equal to the vibration threshold value, it is determined whether the load is reduced by a first preset proportion, if the first preset proportion is not reached, the load is continuously controlled to be reduced to reacquire the vibration value after the load adjustment for determination, if the first preset proportion is reached, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled to be adjusted to realize the control adjustment of the vibration of the medium-speed coal mill.

[0010] In one embodiment of the present disclosure, if the first preset proportion is reached, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled to be adjusted based on a second preset proportion of the current output of the medium-speed coal mill and the set output.

[0011] In one embodiment of the present disclosure, the current output of the medium-speed coal mill and the set output are controlled to be adjusted based on a second preset proportion, including: if the current output is greater than the second preset proportion of the set output, the separator speed is controlled to be reduced to acquire the vibration value after the speed adjustment of the medium-speed coal mill, if the vibration value after the speed adjustment is less than the vibration threshold value, the mill operating parameters are maintained, if the vibration value after the speed adjustment is greater than or equal to the vibration threshold value, it is determined whether the separator speed is reduced by a third preset proportion, if the third preset proportion is not reached, the separator speed is continuously controlled to be reduced to reacquire the vibration value after the speed adjustment for determination, if the third preset proportion is reached, the mill ventilation and the current output of the medium-speed coal mill are controlled to be adjusted.

[0012] In one embodiment of the present disclosure, if the third preset proportion is reached, the mill ventilation and the current output of the medium-speed coal mill are controlled to be adjusted, including: if the third preset proportion is reached, the mill ventilation is controlled to be increased to acquire the vibration value after the ventilation adjustment of the medium-speed coal mill, if the vibration value after the ventilation adjustment is less than the vibration threshold value, the mill operating parameters are maintained, if the vibration value after the ventilation adjustment is greater than or equal to the vibration threshold value, it is determined whether the mill ventilation is increased by a fourth preset proportion, if the fourth preset proportion is not reached, the mill ventilation is continuously controlled to be increased to reacquire the vibration value after the ventilation adjustment for determination, if the fourth preset proportion is reached, the current output of the medium-speed coal mill is controlled to be adjusted.

[0013] In one embodiment of the present disclosure, if the fourth preset proportion is reached, the current output of the medium-speed coal mill is controlled to be adjusted, including: if the fourth preset proportion is reached, the current output is controlled to be reduced to obtain a vibration value after the output of the medium-speed coal mill is adjusted, if the vibration value after the output is adjusted is less than the vibration threshold, the running parameters of the coal mill are maintained; if the vibration value after the output is adjusted is greater than or equal to the vibration threshold, whether the current output is reduced by a fifth preset proportion is judged, if the fifth preset proportion is not reached, the current output is continuously controlled to be reduced to re-obtain the vibration value after the output is adjusted for judgment; if the fifth preset proportion is reached, the medium-speed coal mill is controlled to be shut down.

[0014] In one embodiment of the present disclosure, the current output of the medium-speed coal mill is controlled to be adjusted based on the second preset proportion of the current output and the set output of the medium-speed coal mill, the separator rotating speed of the medium-speed coal mill, the ventilation quantity of the coal mill and the current output, further including: if the current output is less than or equal to the second preset proportion of the set output, the separator rotating speed is controlled to be increased to obtain a vibration value after the rotating speed of the medium-speed coal mill is adjusted, if the vibration value after the rotating speed is adjusted is less than the vibration threshold, the running parameters of the coal mill are maintained; if the vibration value after the rotating speed is adjusted is greater than or equal to the vibration threshold, whether the separator rotating speed is increased by a sixth preset proportion is judged, if the sixth preset proportion is not reached, the separator rotating speed is continuously controlled to be increased to re-obtain the vibration value after the rotating speed is adjusted for judgment; if the sixth preset proportion is reached, the ventilation quantity of the coal mill and the current output of the medium-speed coal mill are controlled to be adjusted.

[0015] In one embodiment of the present disclosure, if the sixth preset proportion is reached, the ventilation quantity of the coal mill is controlled to be adjusted, including: if the sixth preset proportion is reached, the ventilation quantity of the coal mill is controlled to be reduced to obtain a vibration value after the ventilation quantity of the medium-speed coal mill is adjusted, if the vibration value after the ventilation quantity is adjusted is less than the vibration threshold, the running parameters of the coal mill are maintained; if the vibration value after the ventilation quantity is adjusted is greater than or equal to the vibration threshold, the current output of the medium-speed coal mill is controlled to be adjusted.

[0016] In one embodiment of the present disclosure, if the vibration value after the ventilation quantity is adjusted is greater than or equal to the vibration threshold, the current output of the medium-speed coal mill is controlled to be adjusted, including: if the vibration value after the ventilation quantity is adjusted is greater than or equal to the vibration threshold, the current output is controlled to be increased to obtain a vibration value after the output of the medium-speed coal mill is adjusted, if the vibration value after the output is adjusted is less than the vibration threshold, the running parameters of the coal mill are maintained; if the vibration value after the output is adjusted is greater than or equal to the vibration threshold, whether the current output is increased by a seventh preset proportion is judged, if the seventh preset proportion is not reached, the current output is continuously controlled to be increased to re-obtain the vibration value after the output is adjusted for judgment; if the seventh preset proportion is reached, the medium-speed coal mill is controlled to be shut down.

[0017] According to a second aspect of the present disclosure, a control adjustment system for reducing vibration of a medium-speed coal mill is also provided, comprising:

[0018] an acquisition module configured to acquire, in real time, a vibration value, a loading force, a current output, a separator speed and a mill ventilation of the medium-speed coal mill during operation of the medium-speed coal mill;

[0019] a judgment module configured to judge whether the vibration value is less than a vibration threshold value, and if so, maintain the operating parameters of the coal mill;

[0020] a first control module configured to, if the vibration value is greater than or equal to the vibration threshold value, control the loading force to be reduced to obtain a vibration value after loading force adjustment of the medium-speed coal mill, and if the vibration value after loading force adjustment is less than the vibration threshold value, maintain the operating parameters of the coal mill;

[0021] a second control module configured to, if the vibration value after loading force adjustment is greater than or equal to the vibration threshold value, judge whether the loading force is reduced by a first preset proportion, and if not, continue to control the loading force to be reduced to reacquire the vibration value after loading force adjustment for judgment; and if the loading force is reduced by the first preset proportion, control the current output, the separator speed and the mill ventilation of the medium-speed coal mill to be adjusted to achieve control adjustment of the vibration of the medium-speed coal mill.

[0022] According to a third aspect of the present disclosure, a control adjustment device for reducing vibration of a medium-speed coal mill is also provided, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control adjustment method for reducing vibration of a medium-speed coal mill according to the first aspect of the present disclosure.

[0023] In one or more embodiments of the present disclosure, during operation of the medium-speed coal mill, the vibration value, the loading force, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are acquired in real time; it is judged whether the vibration value is less than a vibration threshold value, if yes, the mill operation parameters are kept; if no, the loading force is controlled to be reduced to acquire the vibration value after the loading force is adjusted, if the vibration value after the loading force is adjusted is less than the vibration threshold value, the mill operation parameters are kept; if the vibration value after the loading force is adjusted is greater than or equal to the vibration threshold value, it is judged whether the loading force is reduced by a first preset proportion, if no, the loading force is continuously controlled to be reduced to re-acquire the vibration value after the loading force is adjusted for judgment; if yes, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled to be adjusted to realize control and adjustment of the vibration of the medium-speed coal mill. In this case, based on the vibration value of the medium-speed coal mill acquired in real time, the vibration of the medium-speed coal mill is controlled by adjusting the loading force, the current output, the separator speed and the mill ventilation of the medium-speed coal mill, thereby the vibration of the medium-speed coal mill can be reduced, so that the equipment operation safety can be better ensured.

[0024] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, including the appended drawings.

[0026] Figure 1 A flowchart schematically showing a control and adjustment method for reducing the vibration of a medium-speed coal mill provided by an embodiment of the present disclosure is shown;

[0027] Figure 2 A flowchart schematically showing another control and adjustment method for reducing the vibration of a medium-speed coal mill provided by an embodiment of the present disclosure is shown;

[0028] Figure 3 A block diagram of a control and adjustment system for reducing the vibration of a medium-speed coal mill provided by an embodiment of the present disclosure is shown;

[0029] Figure 4 A block diagram of a control and adjustment device for reducing the vibration of a medium-speed coal mill for realizing the control and adjustment method for reducing the vibration of a medium-speed coal mill provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0030] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0031] In the description of the present disclosure, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the description of the present disclosure, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present disclosure and the features of the different embodiments or examples without contradiction.

[0032] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited. It should also be understood that the term "and / or" used in the present disclosure means and includes any or all possible combinations of one or more associated listed items.

[0033] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0034] The present disclosure provides a control adjustment method and system for reducing the vibration of a medium-speed coal mill, the main purpose of which is to reduce the vibration of the medium-speed coal mill, thereby better ensuring the safe operation of the equipment. In the embodiments of the present disclosure, the medium-speed coal mill can be referred to as a coal mill.

[0035] In the first embodiment, Figure 1 A flowchart of a control adjustment method for reducing the vibration of a medium-speed coal mill provided by the embodiments of the present disclosure is shown. Figure 2A flowchart of another control adjustment method for reducing vibration of a medium-speed coal mill is shown. As shown in Figure 1 , the control adjustment method for reducing vibration of a medium-speed coal mill comprises:

[0036] In step S11, the vibration value, loading force, current output, separator speed and mill ventilation of the medium-speed coal mill are acquired in real time during operation of the medium-speed coal mill.

[0037] In step S11, the vibration value, loading force, current output, separator speed and mill ventilation of the medium-speed coal mill during operation can be acquired by corresponding acquisition devices.

[0038] In step S11, the acquired vibration value, loading force, current output, separator speed and mill ventilation can be sent to the control system of the medium-speed coal mill for real-time monitoring, and the control system of the medium-speed coal mill is used for subsequent step judgment and control adjustment of the vibration value, loading force, current output, separator speed and mill ventilation.

[0039] In step S12, it is determined whether the vibration value is less than the vibration threshold value, and if so, the mill operating parameters are maintained.

[0040] In step S12, the vibration value is compared with the vibration threshold value to determine whether the vibration value is less than the vibration threshold value, and if so, the operating parameters of the medium-speed coal mill are maintained, i.e., the mill operating parameters are not adjusted (see Figure 2 ). The vibration threshold value can be pre-set, and the vibration threshold value is generally set within 25mm-100mm. The vibration threshold value can be determined according to different conditions such as specific types of medium-speed coal mills and coal quality.

[0041] In step S13, if the vibration value is greater than or equal to the vibration threshold value, the loading force is controlled to be reduced to obtain the vibration value after adjustment of the loading force of the medium-speed coal mill, and if the vibration value after adjustment of the loading force is less than the vibration threshold value, the mill operating parameters are maintained.

[0042] In step S13, as shown in Figure 2 , if the vibration value is greater than or equal to the vibration threshold value, the loading force of the mill is controlled to be reduced. The loading force of the mill can be controlled to be reduced at a reduction rate of 5% per 5 minutes.

[0043] In step S13, since the control to reduce the loading force will cause the vibration of the medium-speed coal mill to change, the vibration value after adjustment of the loading force of the medium-speed coal mill is also acquired (see Figure 2 ).

[0044] In step S13, as shown in Figure 2As shown, the vibration value after the load adjustment is compared with the vibration threshold value, and if the vibration value after the load adjustment is less than the vibration threshold value, the running parameters of the medium-speed coal mill are maintained.

[0045] In step S14, if the vibration value after the load adjustment is greater than or equal to the vibration threshold value, it is determined whether the load is reduced by a first preset proportion, and if the first preset proportion is not reached, the load is continuously controlled to be reduced to reacquire the vibration value after the load adjustment for determination; if the first preset proportion is reached, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled to be adjusted to realize the control adjustment of the vibration of the medium-speed coal mill.

[0046] In the embodiment, the first preset proportion in step S14 can be 20%. It is easily understood that the load being reduced by the first preset proportion means that, compared with the initial load, the adjusted load is reduced by 20% when the load is controlled to be reduced.

[0047] In step S14, specifically, as shown in Figure 2 If the vibration value after the load adjustment is not less than the vibration threshold value, it is determined whether the load is reduced by the first preset proportion, and if the load is not reduced by the first preset proportion (i.e. the first preset proportion is not reached), the step of controlling the load to be reduced is returned to continue to reduce the load, and then the vibration value after the load adjustment is reacquired, and it is determined whether the reacquired vibration value after the load adjustment is less than the vibration threshold value, and if yes, the running parameters of the medium-speed coal mill are maintained, and if no, and the load is not reduced by the first preset proportion, the cycle is continued, and if no, and the load is reduced by the first preset proportion, the subsequent step is entered.

[0048] In step S14, if the first preset proportion is reached, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled to be adjusted, including: if the first preset proportion is reached, the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled to be adjusted based on the second preset proportion of the current output of the medium-speed coal mill and the set output.

[0049] In the embodiment, the second preset proportion in step S14 can be 70%.

[0050] In step S14, specifically, if the load is reduced by the first preset proportion (i.e. the first preset proportion is reached), the current output of the mill is compared with the set output (i.e. the guaranteed output value of the mill). As shown in Figure 2 The comparison between the current output of the mill and the set output can be to determine whether the current output is greater than the second preset proportion of the set output, and based on different determination results, the separator speed, the mill ventilation and the current output of the medium-speed coal mill are correspondingly controlled to be adjusted.

[0051] In step S14, based on the second preset ratio between the current output of the medium-speed coal mill and the set output, the separator speed, coal mill ventilation volume, and current output of the medium-speed coal mill are controlled and adjusted, including: if the current output is greater than the second preset ratio of the set output, the separator speed is controlled to decrease to obtain the vibration value after the medium-speed coal mill speed adjustment; if the vibration value after the speed adjustment is less than the vibration threshold, the coal mill operating parameters are maintained; if the vibration value after the speed adjustment is greater than or equal to the vibration threshold, it is determined whether the separator speed has decreased by a third preset ratio; if the third preset ratio has not been reached, the separator speed is controlled to decrease again to obtain the vibration value after the speed adjustment for judgment; if the third preset ratio has been reached, the coal mill ventilation volume and current output of the medium-speed coal mill are controlled and adjusted.

[0052] In this embodiment, the third preset ratio in step S14 can be 25%. It is easy to understand that the third preset ratio for reducing the separator speed means that, when controlling the reduction of the separator speed, the adjusted separator speed is reduced by 25% compared to the initial separator speed. For example... Figure 2 As shown, if the current output is greater than the second preset ratio of the set output, the separator speed is controlled to decrease. Specifically, the separator speed of the coal mill can be reduced at a rate of 5% decrease every 5 minutes. Furthermore, since controlling the reduction of the separator speed also causes vibration changes in the medium-speed coal mill, the vibration value of the medium-speed coal mill after the separator speed adjustment is also obtained.

[0053] In step S14, specifically, as follows Figure 2 As shown, the vibration value after speed adjustment is compared with the vibration threshold. If the vibration value after speed adjustment is less than the vibration threshold, the operating parameters of the medium-speed coal mill are maintained. If the vibration value after speed adjustment is not less than the vibration threshold, it is determined whether the separator speed has decreased by the third preset ratio. If the separator speed has not decreased by the third preset ratio (i.e., the third preset ratio has not been reached), the process returns to the step of controlling the reduction of the separator speed to continue reducing the separator speed. Then, the vibration value after speed adjustment is re-acquired, and it is determined whether the re-acquired vibration value after speed adjustment is less than the vibration threshold. If it is less, the operating parameters of the medium-speed coal mill are maintained. If it is not less and the speed has not decreased by the third preset ratio, the cycle continues. If it is not less and the speed has decreased by the third preset ratio, the process proceeds to the next step.

[0054] In step S14, if the third preset ratio is reached, the ventilation volume and current output of the medium-speed coal mill are controlled and adjusted, including: if the third preset ratio is reached, the ventilation volume of the coal mill is increased to obtain the vibration value after the ventilation volume of the medium-speed coal mill is adjusted; if the vibration value after the ventilation volume adjustment is less than the vibration threshold, the operating parameters of the coal mill are maintained; if the vibration value after the ventilation volume adjustment is greater than or equal to the vibration threshold, it is determined whether the ventilation volume of the coal mill is increased to the fourth preset ratio; if the fourth preset ratio is not reached, the ventilation volume of the coal mill is increased again to obtain the vibration value after the ventilation volume adjustment for judgment; if the fourth preset ratio is reached, the current output of the medium-speed coal mill is controlled and adjusted.

[0055] In this embodiment, the fourth preset ratio in step S14 can be 10%. It is easy to understand that increasing the coal mill ventilation volume by the fourth preset ratio means that, when controlling the increase in coal mill ventilation volume, the adjusted coal mill ventilation volume is increased by 10% compared to the initial coal mill ventilation volume. For example... Figure 2 As shown, if the separator speed decreases by a third preset percentage, the ventilation volume of the coal mill is increased. This increase can be achieved by increasing the ventilation volume by 5% every 5 minutes. Furthermore, since increasing the coal mill ventilation volume also causes vibration changes in the medium-speed coal mill, the vibration value of the medium-speed coal mill after ventilation volume adjustment is also obtained.

[0056] In step S14, specifically, as follows Figure 2 As shown, the vibration value after ventilation volume adjustment is compared with the vibration threshold. If the vibration value after ventilation volume adjustment is less than the vibration threshold, the operating parameters of the medium-speed coal mill are maintained. If the vibration value after ventilation volume adjustment is not less than the vibration threshold, it is determined whether the ventilation volume has been increased by the fourth preset ratio. If the ventilation volume has not been increased by the fourth preset ratio (i.e., the fourth preset ratio has not been reached), the process returns to the step of controlling the increase of ventilation volume to continue increasing the ventilation volume. Then, the vibration value after ventilation volume adjustment is re-acquired, and it is determined whether the re-acquired vibration value after ventilation volume adjustment is less than the vibration threshold. If it is less, the operating parameters of the medium-speed coal mill are maintained. If it is not less and the ventilation volume has not decreased by the fourth preset ratio, the cycle continues. If it is not less and the ventilation volume has decreased by the fourth preset ratio, the process proceeds to the next step.

[0057] In step S14, if the fourth preset ratio is reached, the current output of the medium-speed coal mill is controlled and adjusted, including: if the fourth preset ratio is reached, the current output is controlled to decrease to obtain the vibration value of the medium-speed coal mill after output adjustment; if the vibration value after output adjustment is less than the vibration threshold, the operating parameters of the coal mill are maintained; if the vibration value after output adjustment is greater than or equal to the vibration threshold, it is determined whether the current output should be reduced to the fifth preset ratio; if the fifth preset ratio is not reached, the current output is controlled to decrease to obtain the vibration value after output adjustment again for judgment; if the fifth preset ratio is reached, the medium-speed coal mill is controlled to stop.

[0058] In this embodiment, the fifth preset ratio in step S14 can be 15%. It is easy to understand that the fifth preset ratio for reducing the current output means that, when controlling the reduction of the current output, the adjusted current output is reduced by 15% compared to the initial current output. Figure 2 As shown, if the ventilation volume of the coal mill increases by a fourth preset ratio, the current output of the coal mill is controlled to decrease. This decrease can be achieved by reducing the output by 5% every 5 minutes. Furthermore, since controlling the decrease in current output also causes vibration changes in the medium-speed coal mill, the vibration value of the medium-speed coal mill after output adjustment is also obtained.

[0059] In step S14, specifically, as follows Figure 2 As shown, the vibration value after output adjustment is compared with the vibration threshold. If the vibration value after output adjustment is less than the vibration threshold, the operating parameters of the medium-speed coal mill are maintained. If the vibration value after output adjustment is not less than the vibration threshold, it is determined whether the current output has been reduced by the fifth preset ratio. If the current output has not been reduced by the fifth preset ratio (i.e., the fifth preset ratio has not been reached), the process returns to the step of controlling the reduction of the current output to continue reducing the current output. Then, the vibration value after output adjustment is re-acquired, and it is determined whether the newly acquired vibration value after output adjustment is less than the vibration threshold. If it is less, the operating parameters of the medium-speed coal mill are maintained. If it is not less and the output has not been reduced by the fifth preset ratio, the cycle continues. If it is not less and the output has been reduced by the fifth preset ratio, the medium-speed coal mill is controlled to stop operation.

[0060] In step S14, based on the second preset ratio of the current output of the medium-speed coal mill to the set output, the separator speed, coal mill ventilation volume, and current output of the medium-speed coal mill are controlled and adjusted. This also includes: if the current output is less than or equal to the second preset ratio of the set output, then the separator speed is increased to obtain the vibration value after the medium-speed coal mill speed adjustment; if the vibration value after speed adjustment is less than the vibration threshold, then the coal mill operating parameters are maintained; if the vibration value after speed adjustment is greater than or equal to the vibration threshold, then it is determined whether the separator speed has increased by a sixth preset ratio; if the sixth preset ratio has not been reached, then the separator speed is further increased to re-obtain the vibration value after speed adjustment for further judgment; if the sixth preset ratio has been reached, then the coal mill ventilation volume and current output of the medium-speed coal mill are controlled and adjusted.

[0061] In this embodiment, the sixth preset ratio in step S14 can be 10%. The separator speed of the coal mill can be increased by increasing the speed by 5% every 5 minutes. Figure 2If the current output is not greater than the second preset proportion of the set output, the separator rotating speed is increased, and the vibration value of the medium-speed coal mill after adjustment of the separator rotating speed is obtained. If the vibration value after adjustment of the rotating speed is less than the vibration threshold, the operating parameters of the medium-speed coal mill are maintained. If the vibration value after adjustment of the rotating speed is not less than the vibration threshold, it is determined whether the separator rotating speed is increased by a sixth preset proportion. If the separator rotating speed is not increased by the sixth preset proportion (i.e., the sixth preset proportion is not reached), the step of increasing the separator rotating speed is returned to, the separator rotating speed is continuously increased, the vibration value after adjustment of the rotating speed is re-obtained, and it is determined whether the re-obtained vibration value after adjustment of the rotating speed is less than the vibration threshold. If the vibration value is less than the vibration threshold, the operating parameters of the medium-speed coal mill are maintained. If the vibration value is not less than the vibration threshold and the rotating speed is not increased by the sixth preset proportion, the cycle is continuously performed. If the vibration value is not less than the vibration threshold and the rotating speed is increased by the sixth preset proportion, a subsequent step is entered.

[0062] In step S14, if the sixth preset proportion is reached, the mill air volume and the current output of the medium-speed coal mill are adjusted, including: if the sixth preset proportion is reached, the mill air volume is reduced to obtain the vibration value of the medium-speed coal mill after adjustment of the mill air volume. If the vibration value after adjustment of the air volume is less than the vibration threshold, the operating parameters of the mill are maintained. If the vibration value after adjustment of the air volume is greater than or equal to the vibration threshold, the current output of the medium-speed coal mill is adjusted. The mill air volume can be reduced by 5%.

[0063] In step S14, if the vibration value after adjustment of the air volume is greater than or equal to the vibration threshold, the current output of the medium-speed coal mill is adjusted, including: if the vibration value after adjustment of the air volume is greater than or equal to the vibration threshold, the current output is increased to obtain the vibration value of the medium-speed coal mill after adjustment of the output. If the vibration value after adjustment of the output is less than the vibration threshold, the operating parameters of the mill are maintained. If the vibration value after adjustment of the output is greater than or equal to the vibration threshold, it is determined whether the current output is increased by a seventh preset proportion. If the seventh preset proportion is not reached, the current output of the mill is continuously increased to re-obtain the vibration value after adjustment of the output for determination. If the seventh preset proportion is reached, the medium-speed coal mill is shut down.

[0064] In this embodiment, the seventh preset proportion in step S14 can be 10%. The current output of the mill can be increased at an increasing speed of 5% of the output per 5 minutes. For example, the current output of the mill is increased by 5% in the first 5 minutes, and then increased by 10% in the next 5 minutes. Figure 3If the vibration value after the adjustment of the ventilation volume is not less than the vibration threshold value, the current output of the coal mill is controlled to be increased, the vibration value after the adjustment of the output is obtained, and it is determined whether the current output is increased by a seventh preset proportion. If the current output is not increased by the seventh preset proportion (i.e., the seventh preset proportion is not reached), the step of increasing the current output is returned to, the current output is continuously increased, the vibration value after the adjustment of the output is re-obtained, and it is determined whether the re-obtained vibration value after the adjustment of the output is less than the vibration threshold value. If yes, the running parameters of the medium-speed coal mill are maintained. If no, the current output is continuously increased, and the vibration value after the adjustment of the output is re-obtained. If the vibration value after the adjustment of the output is not less than the vibration threshold value and the current output is increased by the seventh preset proportion, the medium-speed coal mill is controlled to be shut down.

[0065] In the control adjustment method for reducing the vibration of the medium-speed coal mill in the embodiment of the present disclosure, during the operation of the medium-speed coal mill, the vibration value, the loading force, the current output, the separator speed and the ventilation volume of the medium-speed coal mill are obtained in real time. It is determined whether the vibration value is less than the vibration threshold value. If yes, the running parameters of the medium-speed coal mill are maintained. If no, the loading force is controlled to be reduced to obtain the vibration value after the adjustment of the loading force of the medium-speed coal mill. If the vibration value after the adjustment of the loading force is less than the vibration threshold value, the running parameters of the medium-speed coal mill are maintained. If the vibration value after the adjustment of the loading force is not less than the vibration threshold value, it is determined whether the loading force is reduced by a first preset proportion. If the first preset proportion is not reached, the loading force is continuously controlled to be reduced to re-obtain the vibration value after the adjustment of the loading force for the determination. If the first preset proportion is reached, the current output, the separator speed and the ventilation volume of the medium-speed coal mill are controlled to be adjusted to realize the control adjustment of the vibration of the medium-speed coal mill. In this case, based on the vibration value of the medium-speed coal mill obtained in real time, the vibration of the medium-speed coal mill is controlled by adjusting the loading force, the current output, the separator speed and the ventilation volume of the medium-speed coal mill. Thus, the vibration of the medium-speed coal mill can be reduced, and the safety of the equipment operation can be better ensured. The method of the present disclosure can realize the real-time adjustment of the vibration of the medium-speed coal mill, the running parameters of the medium-speed coal mill are adjusted in time according to the vibration value of the medium-speed coal mill fed back in real time, the vibration value of the medium-speed coal mill is controlled to be within the allowable range, the vibration of the medium-speed coal mill can be effectively reduced, the safety of the equipment operation can be ensured, the method has high social and technical and economic benefits, the logic is clear, the operability is high, and the blank in the prior art is filled.

[0066] The following is an embodiment of the system of the present disclosure, which can be used to execute the method embodiments of the present disclosure. For details not disclosed in the system embodiments of the present disclosure, please refer to the method embodiments of the present disclosure.

[0067] Please refer to Figure 3 , Figure 4A block diagram of a control adjustment system for reducing vibration of a medium-speed coal mill is shown. The control adjustment system for reducing vibration of the medium-speed coal mill can be implemented by software, hardware or a combination of both to become all or part of a system. The control adjustment system for reducing vibration of the medium-speed coal mill of the embodiment can be simply referred to as an energy storage system configuration system. The control adjustment system for reducing vibration of the medium-speed coal mill 10 includes an acquisition module 11, a judgment module 12, a first control module 13 and a second control module 14, wherein:

[0068] The acquisition module 11 is configured to acquire, in real time, a vibration value, a loading force, a current output, a separator speed and a mill ventilation of the medium-speed coal mill during operation of the medium-speed coal mill.

[0069] The judgment module 12 is configured to judge whether the vibration value is less than a vibration threshold value. If the vibration value is less than the vibration threshold value, the running parameters of the coal mill are maintained.

[0070] The first control module 13 is configured to control the loading force to be reduced to obtain a vibration value after loading force adjustment of the medium-speed coal mill if the vibration value is greater than or equal to the vibration threshold value. If the vibration value after the loading force adjustment is less than the vibration threshold value, the running parameters of the coal mill are maintained.

[0071] The second control module 14 is configured to judge whether the loading force is reduced by a first preset proportion if the vibration value after the loading force adjustment is greater than or equal to the vibration threshold value. If the first preset proportion is not reached, the loading force is continuously controlled to be reduced to reacquire the vibration value after the loading force adjustment for judgment. If the first preset proportion is reached, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to achieve control adjustment of the vibration of the medium-speed coal mill.

[0072] Optionally, the second control module 14 is specifically configured to control and adjust the separator speed, the mill ventilation and the current output of the medium-speed coal mill based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached.

[0073] Optionally, the second control module 14 is specifically configured to control the separator speed to be reduced to obtain a vibration value after speed adjustment of the medium-speed coal mill if the current output is greater than the second preset proportion of the set output. If the vibration value after the speed adjustment is less than the vibration threshold value, the running parameters of the coal mill are maintained. If the vibration value after the speed adjustment is greater than or equal to the vibration threshold value, it is judged whether the separator speed is reduced by a third preset proportion. If the third preset proportion is not reached, the separator speed is continuously controlled to be reduced to reacquire the vibration value after the speed adjustment for judgment. If the third preset proportion is reached, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted.

[0074] Optionally, the second control module 14 is specifically configured to: if the third preset proportion is reached, control the increase of the mill draft to obtain a vibration value after the mill draft adjustment of the medium-speed mill, if the vibration value after the draft adjustment is less than the vibration threshold, keep the mill operation parameters; if the vibration value after the draft adjustment is greater than or equal to the vibration threshold, judge whether the mill draft is increased by a fourth preset proportion, if the fourth preset proportion is not reached, continue to control the increase of the mill draft to re-obtain the vibration value after the draft adjustment for judgment; if the fourth preset proportion is reached, control the adjustment of the current output of the medium-speed mill.

[0075] Optionally, the second control module 14 is specifically configured to: if the fourth preset proportion is reached, control the decrease of the current output to obtain a vibration value after the output adjustment of the medium-speed mill, if the vibration value after the output adjustment is less than the vibration threshold, keep the mill operation parameters; if the vibration value after the output adjustment is greater than or equal to the vibration threshold, judge whether the current output is decreased by a fifth preset proportion, if the fifth preset proportion is not reached, continue to control the decrease of the current output to re-obtain the vibration value after the output adjustment for judgment; if the fifth preset proportion is reached, control the shutdown of the medium-speed mill.

[0076] Optionally, the second control module 14 is specifically configured to: if the current output is less than or equal to the second preset proportion of the set output, control the increase of the separator speed to obtain a vibration value after the speed adjustment of the medium-speed mill, if the vibration value after the speed adjustment is less than the vibration threshold, keep the mill operation parameters; if the vibration value after the speed adjustment is greater than or equal to the vibration threshold, judge whether the separator speed is increased by a sixth preset proportion, if the sixth preset proportion is not reached, continue to control the increase of the separator speed to re-obtain the vibration value after the speed adjustment for judgment; if the sixth preset proportion is reached, control the adjustment of the mill draft and the current output of the medium-speed mill.

[0077] Optionally, the second control module 14 is specifically configured to: if the sixth preset proportion is reached, control the decrease of the mill draft to obtain a vibration value after the draft adjustment of the medium-speed mill, if the vibration value after the draft adjustment is less than the vibration threshold, keep the mill operation parameters; if the vibration value after the draft adjustment is greater than or equal to the vibration threshold, control the adjustment of the current output of the medium-speed mill.

[0078] Optionally, the second control module 14 is specifically configured to: if the vibration value after the air volume adjustment is greater than or equal to the vibration threshold value, control the current output to be increased to obtain the vibration value after the output adjustment of the medium-speed coal mill, if the vibration value after the output adjustment is less than the vibration threshold value, keep the running parameters of the coal mill unchanged, if the vibration value after the output adjustment is greater than or equal to the vibration threshold value, determine whether the current output is increased by a seventh preset proportion, if the seventh preset proportion is not reached, continue to control the current output to be increased to obtain the vibration value after the output adjustment for determination, and if the seventh preset proportion is reached, control the medium-speed coal mill to be stopped.

[0079] It should be noted that the control adjustment system for reducing the vibration of the medium-speed coal mill provided in the above embodiments is only used as an example to illustrate the division of the above functional modules when the control adjustment method for reducing the vibration of the medium-speed coal mill is executed, and in actual application, the above functions can be completed by different functional modules according to the needs, that is, the internal structure of the control adjustment device for reducing the vibration of the medium-speed coal mill is divided into different functional modules to complete all or part of the above functions. In addition, the control adjustment system for reducing the vibration of the medium-speed coal mill and the control adjustment method for reducing the vibration of the medium-speed coal mill provided in the above embodiments belong to the same concept, and the implementation process is described in detail in the method embodiments, which will not be repeated here.

[0080] The above sequence numbers of the embodiments of the present disclosure are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0081] In the control adjustment system for reducing the vibration of the medium-speed coal mill in the embodiments of the present disclosure, the acquisition module is configured to acquire the vibration value, the loading force, the current output, the separator speed and the mill ventilation of the medium-speed coal mill in real time during the operation of the medium-speed coal mill; the judgment module is configured to judge whether the vibration value is less than the vibration threshold value, and if so, the mill operation parameters are kept; the first control module is configured to control the reduction of the loading force to acquire the vibration value after the adjustment of the loading force of the medium-speed coal mill if the vibration value is greater than or equal to the vibration threshold value, and if the vibration value after the adjustment of the loading force is less than the vibration threshold value, the mill operation parameters are kept; the second control module is configured to judge whether the loading force is reduced by a first preset proportion if the vibration value after the adjustment of the loading force is greater than or equal to the vibration threshold value, and if not, the reduction of the loading force is continued to reacquire the vibration value after the adjustment of the loading force for judgment; and the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled for adjustment if the loading force is reduced by the first preset proportion, so as to realize the control adjustment of the vibration of the medium-speed coal mill. In this case, the vibration of the medium-speed coal mill is controlled by adjusting the loading force, the current output, the separator speed and the mill ventilation of the medium-speed coal mill based on the vibration value of the medium-speed coal mill acquired in real time, so as to reduce the vibration of the medium-speed coal mill, thereby better ensuring the safe operation of the equipment. The system of the present disclosure can realize the real-time adjustment of the vibration of the medium-speed coal mill, timely adjust the mill operation parameters according to the real-time feedback of the mill vibration value, control the mill vibration value within the allowable range, effectively reduce the vibration of the medium-speed coal mill, ensure the safe operation of the equipment, have high social and technical and economic benefits, and have clear logic and strong operability, thereby filling the gap in the prior art.

[0082] According to the embodiments of the present disclosure, the present disclosure further provides a control adjustment device for reducing the vibration of the medium-speed coal mill, a readable storage medium and a computer program product.

[0083] Figure 4 is a block diagram of the control adjustment device for reducing the vibration of the medium-speed coal mill for realizing the control adjustment method for reducing the vibration of the medium-speed coal mill. The control adjustment device for reducing the vibration of the medium-speed coal mill is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The control adjustment device for reducing the vibration of the medium-speed coal mill can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable electronic devices and other similar computing devices. The components shown in the present disclosure, the connections and relationships between the components, and the functions of the components are merely for example and are not intended to limit the implementation of the present disclosure described and / or claimed in the present disclosure.

[0084] As ​As shown, the control adjustment device 20 for reducing the vibration of the medium-speed coal mill includes a computing unit 21 that can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 22 or a computer program loaded from a storage unit 28 into a random access memory (RAM) 23. In the RAM 23, various programs and data required for the operation of the control adjustment device 20 for reducing the vibration of the medium-speed coal mill can also be stored. The computing unit 21, the ROM 22, and the RAM 23 are connected to each other through a bus 24. An input / output (I / O) interface 25 is also connected to the bus 24.

[0085] Various components in the control adjustment device 20 for reducing the vibration of the medium-speed coal mill are connected to the I / O interface 25, including: an input unit 26, such as a keyboard, a mouse, and the like; an output unit 27, such as various types of displays, speakers, and the like; a storage unit 28, such as a magnetic disk, an optical disk, and the like, which is communicatively connected to the computing unit 21; and a communication unit 29, such as a network card, a modem, a wireless communication transceiver, and the like. The communication unit 29 allows the control adjustment device 20 for reducing the vibration of the medium-speed coal mill to exchange information / data with other control adjustment devices for reducing the vibration of the medium-speed coal mill through a computer network, such as the Internet, and / or various telecommunication networks.

[0086] The computing unit 21 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 21 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, and the like. The computing unit 21 performs various methods and processes described above, such as the control adjustment method for reducing the vibration of the medium-speed coal mill. For example, in some embodiments, the control adjustment method for reducing the vibration of the medium-speed coal mill can be implemented as a computer software program that is tangibly embodied in a machine-readable medium, such as the storage unit 28. In some embodiments, part or all of the computer program can be loaded and / or installed on the control adjustment device 20 for reducing the vibration of the medium-speed coal mill via the ROM 22 and / or the communication unit 29. When the computer program is loaded into the RAM 23 and executed by the computing unit 21, one or more steps of the control adjustment method for reducing the vibration of the medium-speed coal mill described above can be performed. Alternatively, in other embodiments, the computing unit 21 can be configured to perform the control adjustment method for reducing the vibration of the medium-speed coal mill by any other appropriate means, such as by means of firmware.

[0087] Various implementations of the systems and techniques described above in the disclosure can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a special-purpose computer chip, a system on a chip (SOC), a computer having a reduced set of resources, a computer hardware, firmware, software, and / or combinations of them. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0088] Program code for carrying out methods of the present disclosure can be written in any combination of one or more programming languages. The program code can be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the program code, when executed by the processor or controller, produces the functions / operations specified in the flowcharts and / or the block diagrams. The program code can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package, and partially on a remote machine or a server.

[0089] In the present disclosure, a machine-readable medium can be a tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or control adjustment device for reducing vibration of a medium speed mill. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium can include, but not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, electronic device, or any suitable combination of the above. More specific examples of the machine-readable storage medium will include one or more lines of electrical connections, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, compact disk read-only memory (CD-ROM), optical storage electronic devices, magnetic storage electronic devices, or any suitable combination of the above.

[0090] To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0091] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), the Internet, and a blockchain network.

[0092] The computer system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service ("Virtual Private Server", or simply "VPS"). The server can also be a server of a distributed system, or a server combined with a blockchain.

[0093] It should be understood that various forms of flow shown above can be used with orders of steps reordered, added to, or deleted from. For example, each step described in the present disclosure can be executed in parallel, in sequence, or in a different order, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.

[0094] The above detailed description does not limit the scope of the disclosure. Various modifications, combinations, sub-combinations and alternatives can be made to the detailed description. Any modification, equivalent replacement and improvement etc. made within the spirit and principle of the disclosure shall be included in the scope of the disclosure.

Claims

1. A control adjustment method for reducing the vibration of a medium speed coal mill, characterized by, Comprise: During the operation of the medium-speed coal mill, the vibration value, the loading force, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are acquired in real time; It is judged whether the vibration value is less than a vibration threshold value, if less than the vibration threshold value, the coal mill operation parameters are kept; If greater than or equal to the vibration threshold value, the loading force is controlled to be reduced to acquire the vibration value after the loading force is adjusted, if the vibration value after the loading force is adjusted is less than the vibration threshold value, the coal mill operation parameters are kept; If the vibration value after the loading force is adjusted is greater than or equal to the vibration threshold value, it is judged whether the loading force is reduced by a first preset proportion, if the first preset proportion is not reached, the loading force is continuously controlled to be reduced to re-acquire the vibration value after the loading force is adjusted for judgment; If the first preset proportion is reached, the current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled to be adjusted to realize the control adjustment of the vibration of the medium-speed coal mill, including: if the first preset proportion is reached, the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled to be adjusted based on the second preset proportion of the current output of the medium-speed coal mill and the set output; The control adjustment of the separator speed, the mill ventilation and the current output of the medium-speed coal mill based on the second preset proportion of the current output of the medium-speed coal mill and the set output, includes: If the current output is greater than the second preset proportion of the set output, the separator speed is controlled to be reduced to acquire the vibration value after the speed is adjusted, if the vibration value after the speed is adjusted is less than the vibration threshold value, the coal mill operation parameters are kept; If the vibration value after the speed is adjusted is greater than or equal to the vibration threshold value, it is judged whether the separator speed is reduced by a third preset proportion, if the third preset proportion is not reached, the separator speed is continuously controlled to be reduced to re-acquire the vibration value after the speed is adjusted for judgment; if the third preset proportion is reached, the mill ventilation and the current output of the medium-speed coal mill are controlled to be adjusted.

2. The control adjustment method of reducing vibration of a medium speed coal mill according to claim 1, wherein, The control adjustment of the mill ventilation and the current output of the medium-speed coal mill if the third preset proportion is reached, includes: If the third preset proportion is reached, the mill ventilation is controlled to be increased to acquire the vibration value after the ventilation is adjusted, if the vibration value after the ventilation is adjusted is less than the vibration threshold value, the coal mill operation parameters are kept; If the vibration value after the ventilation is adjusted is greater than or equal to the vibration threshold value, it is judged whether the mill ventilation is increased by a fourth preset proportion, if the fourth preset proportion is not reached, the mill ventilation is continuously controlled to be increased to re-acquire the vibration value after the ventilation is adjusted for judgment; if the fourth preset proportion is reached, the current output of the medium-speed coal mill is controlled to be adjusted.

3. The control adjustment method of reducing the vibration of the medium-speed coal mill according to claim 2, characterized in that, The control adjustment of the current output of the medium-speed coal mill if the fourth preset proportion is reached, includes: If the fourth preset proportion is reached, the current output is controlled to be reduced to acquire the vibration value after the output is adjusted, if the vibration value after the output is adjusted is less than the vibration threshold value, the coal mill operation parameters are kept; If the vibration value after the output adjustment is greater than or equal to the vibration threshold value, it is determined whether the current output is reduced by a fifth preset proportion, if the fifth preset proportion is not reached, the current output is continuously controlled to be reduced to reacquire the vibration value after the output adjustment for judgment, if the fifth preset proportion is reached, the medium-speed coal mill is controlled to be stopped.

4. The control adjustment method of reducing the vibration of a medium speed coal mill according to claim 1, wherein, The second preset proportion of the current output and the set output of the medium-speed coal mill is used to control adjustment of the separator rotating speed, the mill ventilation and the current output of the medium-speed coal mill, and the method further comprises: If the current output is less than or equal to the second preset proportion of the set output, the separator rotating speed is controlled to be increased to acquire a vibration value after the rotating speed adjustment of the medium-speed coal mill, if the vibration value after the rotating speed adjustment is less than the vibration threshold value, the mill operating parameters are maintained; If the vibration value after the rotating speed adjustment is greater than or equal to the vibration threshold value, it is determined whether the separator rotating speed is increased by a sixth preset proportion, if the sixth preset proportion is not reached, the separator rotating speed is continuously controlled to be increased to reacquire the vibration value after the rotating speed adjustment for judgment, if the sixth preset proportion is reached, the mill ventilation and the current output of the medium-speed coal mill are controlled to be adjusted.

5. The control adjustment method of reducing the vibration of the medium speed coal mill according to claim 4, characterized in that, If the sixth preset proportion is reached, the mill ventilation is controlled to be reduced to acquire a vibration value after the ventilation adjustment of the medium-speed coal mill, if the vibration value after the ventilation adjustment is less than the vibration threshold value, the mill operating parameters are maintained, if the vibration value after the ventilation adjustment is greater than or equal to the vibration threshold value, the current output of the medium-speed coal mill is controlled to be adjusted. If the vibration value after the ventilation adjustment is greater than or equal to the vibration threshold value, the current output of the medium-speed coal mill is controlled to be adjusted, comprising:

6. The control adjustment method of reducing the vibration of the medium-speed coal mill according to claim 5, characterized in that, If the vibration value after the ventilation adjustment is greater than or equal to the vibration threshold value, the current output of the medium-speed coal mill is controlled to be increased to acquire a vibration value after the output adjustment of the medium-speed coal mill, if the vibration value after the output adjustment is less than the vibration threshold value, the mill operating parameters are maintained; If the vibration value after the output adjustment is greater than or equal to the vibration threshold value, it is determined whether the current output is increased by a seventh preset proportion, if the seventh preset proportion is not reached, the current output is continuously controlled to be increased to reacquire the vibration value after the output adjustment for judgment, if the seventh preset proportion is reached, the medium-speed coal mill is controlled to be stopped. Comprising:

7. A control adjustment system for reducing the vibration of a medium-speed coal mill, which employs the control adjustment method for reducing the vibration of a medium-speed coal mill according to any one of claims 1 to 6, characterized by The acquisition module is used to acquire, in real time, the vibration value, the loading force, the current output, the separator rotating speed and the mill ventilation of the medium-speed coal mill during the operation of the medium-speed coal mill; The judgment module is used to determine whether the vibration value is less than the vibration threshold value, if the vibration value is less than the vibration threshold value, the mill operating parameters are maintained; The first control module is used to control the loading force to be reduced to acquire a vibration value after the loading force adjustment of the medium-speed coal mill if the vibration value is greater than or equal to the vibration threshold value, if the vibration value after the loading force adjustment is less than the vibration threshold value, the mill operating parameters are maintained; ​ The second control module is configured to determine whether the loading force is reduced by a first preset proportion if the vibration value after the loading force adjustment is greater than or equal to the vibration threshold value, and to continue to control the loading force to be reduced to reacquire the vibration value after the loading force adjustment for determination if the first preset proportion is not reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached.

8. A control adjustment device for reducing the vibration of a medium speed coal mill, characterized by, The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the mill ventilation of the medium-speed coal mill are controlled and adjusted to realize the control adjustment of the vibration of the medium-speed coal mill if the first preset proportion is reached, including: the separator speed, the mill ventilation and the current output of the medium-speed coal mill are controlled and adjusted based on a second preset proportion of the current output of the medium-speed coal mill to the set output if the first preset proportion is reached. The current output, the separator speed and the

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