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Multi-stage pump starting method, system and equipment

A multi-stage pump and preset threshold technology, applied in mining equipment, mechanical equipment, pumps, etc., can solve problems such as unusable, misjudgment, failure to fill water or fail to start the pump, etc., to avoid failure to fill water and avoid errors , the effect of reducing labor costs

Active Publication Date: 2021-01-05
兖矿能源集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common methods for judging the conditions for starting the pump are as follows: (1) Manually observe the mechanical negative pressure gauge. When the pointer shakes rapidly, the condition for starting the pump is met, but it cannot be used in automatic control; (2) Check the water level of the water tank through the sensor. Measurement, calculate the dynamic vacuum degree in the program, measure the negative pressure of the pump body through the sensor, read the real-time vacuum degree of the pump body in the program, and judge whether the vacuum degree is based on the comparison between the calculated dynamic vacuum degree and the real-time vacuum degree The condition of starting the pump is met, but the disadvantage is that the calculated data is often misjudged under the interference of factors such as the fluctuation of the water level of the water tank and the large errors in the calculation process, and the phenomenon that the water cannot be supplied or the pump cannot be started.

Method used

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  • Multi-stage pump starting method, system and equipment
  • Multi-stage pump starting method, system and equipment
  • Multi-stage pump starting method, system and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 Shown, a kind of multi-stage pump starting method comprises the following steps:

[0032] S100. After the multi-stage pump starts vacuuming, collect vacuum degree data before and after a predetermined time interval;

[0033] S200. Comparing the collected vacuum degree difference with the preset threshold value, and recording the vacuum degree difference value being smaller than the preset threshold value;

[0034] S300. When the number of times that the vacuum difference is smaller than the preset threshold reaches the preset number of times, the multi-stage pump starts the water pump motor.

[0035] Through research and observation, it is found that the change law of the vacuum degree of the pump body during vacuum pumping is: the initial stage of the vacuum degree continues to rise, that is, it is constantly changing, and when the conditions for starting the pump are finally met, the vacuum degree does not change or changes within a small range. Yes...

Embodiment 2

[0051] Such as figure 2 As shown, a multi-stage pump starting system includes:

[0052]The data collection module 100 is used to collect the vacuum degree data before and after the predetermined time period after the multi-stage pump starts vacuuming;

[0053] Calculation module 200, used to compare the difference in vacuum degrees collected by the data collection module with the preset threshold;

[0054] The counting module 300 is used to record the situation that the vacuum degree difference calculated by the calculation module is less than a preset threshold;

[0055] The starting module 400 is configured to start the water pump motor when the counting module records that the vacuum degree difference value is less than the preset threshold value and the number of occurrences reaches the preset number of times.

[0056] Through research and observation, it is found that the change law of the vacuum degree of the pump body during vacuum pumping is: the initial stage of th...

Embodiment 3

[0072] A multi-stage pump starting device comprising at least one processor;

[0073] And a memory connected in communication with at least one processor; wherein, the memory stores an instruction program that can be executed by at least one processor, and the instruction program is executed by at least one processor, so that at least one processor can perform as listed in Embodiment 1 A multi-stage pump starting method.

[0074] Wherein, the command program includes a multi-stage pump starting system as listed in Embodiment 2.

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Abstract

The invention discloses a multi-stage pump starting method, system and equipment. The method comprises the steps that after a multi-stage pump is started and vacuumized, vacuum degree data at a formermoment and vacuum degree data at a later moment at the interval of a preset time period are collected; a difference value of collected vacuum degrees at the former moment and the later moment is compared with a preset threshold value, and the situation that the difference value of the vacuum degrees is smaller than the preset threshold value is recorded; and when the frequency of occurrence of the situation that the difference value of the vacuum degrees is smaller than the preset threshold value reaches a preset frequency, the multi-stage pump starts a water pump motor. According to the scheme, the real-time vacuum degree of a pump body is read mainly through a sensor, the vacuum degree at the former moment is continuously compared with the vacuum degree at the current moment in a programmable controller to judge whether the vacuum degree reaches the limit and meets the pump body starting condition or not, and therefore the phenomenon that water cannot be fed due to the misjudgment that the vacuum degree of the pump body meets the pump starting condition is effectively avoided; and meanwhile, the method is suitable for automatic control, errors caused by manual observation are avoided, manpower resources are liberated, and the labor cost of an enterprise is reduced.

Description

technical field [0001] The invention belongs to the technical field of coal mine production equipment control, and in particular relates to a multistage pump starting method, system and equipment thereof. Background technique [0002] In the drainage process of the mine pump room, the most commonly used is the multi-stage pump. Before starting the pump body, it is necessary to vacuumize the pump body to fill in the diversion water, so as to meet the conditions for starting the pump. The common methods for judging the conditions for starting the pump are as follows: (1) Manually observe the mechanical negative pressure gauge. If the pointer shakes rapidly, it means meeting the conditions for starting the pump, but it cannot be used in automatic control; (2) Check the water level of the water tank through the sensor. Measurement, calculate the dynamic vacuum degree in the program, measure the negative pressure of the pump body through the sensor, read the real-time vacuum degr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/02F04B49/06F04B17/03E21F16/00
CPCF04B49/02F04B49/065F04B17/03E21F16/00
Inventor 朱晓宁唐波许健朱业明张厚旺李文龙岳福森栾冬梅
Owner 兖矿能源集团股份有限公司
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