CN-115112409-B - Automatic sampling method, system, equipment and medium for coal sample

CN115112409BCN 115112409 BCN115112409 BCN 115112409BCN-115112409-B

Abstract

The invention discloses an automatic sampling method, system, equipment and medium for coal samples, wherein the automatic sampling method is applied to a sampling device, the sampling device comprises a divider, and the automatic sampling method comprises the following steps: judging whether the current sampling amount meets the preset range of the preset sampling amount, and if not, automatically adjusting the frequency of the divider. The method and the device for sampling the current sample volume automatically adjust the frequency of the divider by judging whether the obtained current sample volume meets the preset range of the preset sample volume or not, and automatically adjust the frequency of the divider when judging that the current sample volume does not meet the preset range of the preset sample volume, so that the current sample volume meeting the preset range of the preset sample volume is finally obtained, uniform sampling to the sample volume meeting the requirement in the set time is ensured by automatically adjusting the frequency of the divider, excessive or insufficient sample volume is avoided, and the sampling efficiency is improved.

Inventors

HUANG WEI
XU JIE
QIU YANG

Assignees

上海外高桥第二发电有限责任公司

Dates

Publication Date: 20260505
Application Date: 20210318

Claims (8)

1. An automatic sampling method of a coal sample, the automatic sampling method being applied to a sampling device including a divider, the automatic sampling method comprising: Judging whether the current sampling amount meets the preset range of the preset sampling amount, and if not, automatically adjusting the frequency of the divider; The sampling device further comprises a belt conveyor, and before the step of judging whether the current sampling amount meets the preset range of the preset sampling amount, the automatic sampling method further comprises the following steps: Acquiring the current instantaneous flow of the belt conveyor; Judging whether the current instantaneous flow is larger than a preset flow, if so, automatically starting a coal blocking alarm, otherwise, acquiring the current sampling quantity; And/or the number of the groups of groups, The automatic sampling method further comprises: if the current sampling amount is judged not to meet the preset range of the preset sampling amount, calculating the difference value between the current sampling amount and the preset sampling amount; Judging whether the difference is larger than a preset difference, if not, automatically adjusting the frequency of the divider, and if so, automatically adjusting the sampling period.
2. The method for automatically sampling a coal sample according to claim 1, further comprising: and if the current sampling amount meets the preset range of the preset sampling amount, ending the sampling.
3. The method for automatically sampling a coal sample according to claim 1, wherein when the sampling period reaches an upper limit value or both the divider frequency and the sampling period reach an upper limit value, if the current sampling amount does not satisfy a preset range of the preset sampling amount, a coal blockage alarm is automatically turned on; And/or the number of the groups of groups, When the divider comprises a multi-stage divider, if the difference value is less than or equal to the preset difference value, the frequency of the divider at the corresponding level is automatically adjusted according to the level sequence of the divider.
4. An automatic sampling system for a coal sample, the automatic sampling system being applied to a sampling device, the sampling device comprising a divider, the automatic sampling system comprising a first judgment module and a first adjustment module; the first judging module is used for judging whether the current sampling amount meets the preset range of the preset sampling amount, and if not, the first adjusting module is called; The first adjusting module is used for automatically adjusting the frequency of the divider; the automatic sampling system further comprises a first acquisition module, a second judgment module, an opening module and a second acquisition module; the first acquisition module is used for acquiring the current instantaneous flow of the belt conveyor; The second judging module is used for judging whether the current instantaneous flow is larger than a preset flow, if so, the starting module is called, and if not, the second obtaining module is called; the opening module is used for automatically opening the coal blocking alarm; The second acquisition module is used for acquiring the current sampling quantity; And/or the number of the groups of groups, The automatic sampling system further comprises a calculation module, a third judging module and a second adjusting module; the first judging module is used for calling the calculating module if judging that the current sampling amount does not meet the preset range of the preset sampling amount; the calculation module is used for calculating the difference value between the current sampling amount and the preset sampling amount; The third judging module is used for judging whether the difference value is larger than a preset difference value, if not, the first adjusting module is called, and if yes, the second adjusting module is called; The second adjusting module is used for automatically adjusting the sampling period.
5. The automatic sampling system of a coal sample of claim 4, further comprising: the first judging module is used for ending sampling if judging that the current sampling amount meets the preset range of the preset sampling amount.
6. The automatic sampling system of a coal sample according to claim 4, wherein when the sampling period reaches an upper limit or both the divider frequency and the sampling period reach an upper limit, the opening module is invoked if the current sampling amount does not meet a preset range of the preset sampling amount; And/or the number of the groups of groups, When the divider comprises a multi-stage divider, the third judging module is used for calling the first adjusting module if the difference value is less than or equal to the preset difference value; the first adjusting module is used for automatically adjusting the frequency of the divider of the corresponding level according to the level sequence of the divider.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for automatically sampling a coal sample as claimed in any one of claims 1-3 when the computer program is executed by the processor.
8. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the method for automatic sampling of coal samples according to any of claims 1-3.

Description

Automatic sampling method, system, equipment and medium for coal sample Technical Field The invention relates to the technical field of coal sampling, in particular to an automatic sampling method, system, equipment and medium for coal samples. Background At present, when coal is discharged from a power plant, coal is required to be sampled, a mechanical sampling mode is generally adopted to collect the coal sample in the prior art, and compared with the original manual sampling mode, the mode greatly reduces factors of human intervention. The current mechanical sampling device adopts a fixed sampling period and a divider frequency to sample coal according to set time, in the sampling process, because indexes such as viscosity, moisture, fluidity and the like of different varieties of coals are large in difference, the coal is sampled by adopting the fixed sampling period and the divider frequency aiming at the different varieties of coals, the sampling quantity is uneven in the same time, and the sampling quantity cannot meet the requirement. In addition, because the moisture of coal is higher, and the viscosity is great, in the sampling process, the coal granule adhesion can cause the emergence of stifled coal phenomenon in equipment, and present mechanical sampling device can not automated inspection the condition of stifled coal, just gets an electric shock gas protection when the stifled coal is especially serious, stops belt operation, has not only influenced the operation of coal conveying system, has increased the work load of mediation moreover, has reduced work efficiency. Disclosure of Invention The invention aims to overcome the defects that the sampling amount cannot meet the requirement and the mechanical sampling cannot automatically detect the coal blockage condition caused by sampling different kinds of coal in a set time by adopting a fixed sampling period and a fixed divider frequency in the prior art, and provides an automatic sampling method, system, equipment and medium for coal samples. The invention solves the technical problems by the following technical scheme: in a first aspect, the present invention provides an automatic sampling method for a coal sample, the automatic sampling method being applied to a sampling device, the sampling device including a divider, the automatic sampling method comprising: judging whether the current sampling amount meets the preset range of the preset sampling amount, and if not, automatically adjusting the frequency of the divider. Preferably, the sampling device further comprises a belt conveyor, and before the step of determining whether the current sampling amount meets the preset range of the preset sampling amount, the automatic sampling method further comprises: Acquiring the current instantaneous flow of the belt conveyor; Judging whether the current instantaneous flow is larger than a preset flow, if so, automatically starting a coal blocking alarm, otherwise, acquiring the current sampling quantity; And/or the number of the groups of groups, The automatic sampling method further comprises: if the current sampling amount is judged not to meet the preset range of the preset sampling amount, calculating the difference value between the current sampling amount and the preset sampling amount; Judging whether the difference is larger than a preset difference, if not, automatically adjusting the frequency of the divider, and if so, automatically adjusting the sampling period. Preferably, the automatic sampling method further comprises: and if the current sampling amount meets the preset range of the preset sampling amount, ending the sampling. Preferably, when the sampling period reaches an upper limit value or both the divider frequency and the sampling period reach an upper limit value, if the current sampling amount does not meet the preset range of the preset sampling amount, automatically starting a coal blockage alarm; And/or the number of the groups of groups, When the divider comprises a multi-stage divider, if the difference value is less than or equal to the preset difference value, the frequency of the divider at the corresponding level is automatically adjusted according to the level sequence of the divider. The second aspect of the invention provides an automatic sampling system for a coal sample, the automatic sampling system is applied to a sampling device, the sampling device comprises a divider, and the automatic sampling system comprises a first judging module and a first adjusting module; the first judging module is used for judging whether the current sampling amount meets the preset range of the preset sampling amount, and if not, the first adjusting module is called; The first adjusting module is used for automatically adjusting the frequency of the divider. Preferably, the sampling device further comprises a belt conveyor, and the automatic sampling system further comprises a first acquisition module, a second judgment modul