Device and method for automatically adjusting and correcting concentration of mining emulsion

Abstract

The invention discloses an automatic mining emulsion concentration adjusting and correcting device and a method thereof. The mining emulsion concentration automatic adjusting and correcting device comprises a mixer, a liquid inlet of the mixer is connected with a water tank and an emulsified oil tank through pipelines, and a liquid outlet of the mixer is connected with an emulsion tank through a pipeline; the adjusting and correcting method comprises the following steps: S1, starting to prepare liquid; s2, uploading the initial actual oil inlet quantity Q (oil 1) and the initial liquid outlet quantity Q (liquid 1) to a data acquisition substation; s3, calculating an initial required flow Q oil 2; comparative analysis is carried out, and the opening degree of the electric control throttle valve is controlled; s4, the interval liquid outlet flow Qliquid 2 is collected every t seconds, and contrastive analysis is carried out; s5, contrastive analysis is conducted on the interval demand flow Qoil 3 and the real-time emulsified oil flow Qoil 4, and the opening degree of an electric control throttling valve is controlled; S6, the steps S4 and S5 are repeated, and it is always guaranteed that the oil inlet amount of the emulsified oil meets the requirement that the actual liquid preparation concentration is consistent with the target concentration.

Description

Technical Field

[0001] The invention relates to the field of emulsions, and in particular to a device and method for automatically adjusting and correcting the concentration of a mining emulsion. Background Art

[0002] With the need for intelligent development of coal mines, higher requirements are placed on the automation and stability of equipment. At present, the emulsions configured in the emulsion proportioning equipment in the mine use a wide variety of emulsion oils, and the concentration proportioning methods are different. The real-time and precision of the concentration adjustment in the proportioning process are poor, and it is impossible to meet the real-time automatic adjustment of the emulsion concentration in large flow proportioning and precise concentration monitoring. At present, most of the manufacturers of many proportioning equipment on the market have added automatic concentration detection at the beginning of the design, and the test results are fed back to the proportioner for automatic adjustment. All of them are based on the emulsion concentration monitored by the concentration sensor to achieve closed-loop control of the emulsion concentration adjustment. However, due to the influence of many external factors such as the harsh underground environment, oil type and temperature, the accuracy and reliability of the emulsion monitored by the concentration sensor generally do not meet the requirements. In the vast coal mines, the application effect on the emulsion proportioning devices produced by many manufacturers is not ideal, and the initial design goal has not been achieved.

[0003] Patent CN 110124546 A provides an emulsion concentration online monitoring and proportioning system, comprising: an emulsion oil tank (1), a mixing tank (2), an emulsion oil tank level sensor (3), a mixing tank level sensor (4), an emulsion oil pump group (5), an emulsion oil flow sensor (6), a first emulsion oil solenoid valve (7.1), a second emulsion oil solenoid valve (7.2), a third emulsion oil solenoid valve (7.3), a water inlet solenoid valve (8), a water inlet flow meter (9), an emulsion delivery pump (10), an emulsion concentration sensor (11), an emulsion oil tank level display window (12.1), a mixing tank level display window (12.2), an emulsion oil tank air filter (13 ...4), a water inlet solenoid valve (13.5), a water inlet flow meter (13.6), an emulsion oil tank air filter (13.7), a water inlet solenoid valve (13.8), a water inlet flow meter (13.9), an emulsion oil tank air filter (13.1), a water inlet flow meter (13.1), a water inlet flow meter (13.1), an emulsion oil tank air filter (13.2), a water inlet solenoid valve (13.3), a water inlet solenoid valve (13.4), a water inlet flow meter (13.5), an emulsion oil tank air filter (13.5), a water inlet solenoid valve (13.6), a water inlet flow meter (13.7), an emulsion oil tank air filter (13.8), a water inlet solenoid valve (1 1) Mixing tank air filter (13.2) and proportioning control box; the whole system is controlled by PLC in the proportioning control box, and the water and oil inflow of the system are accurately measured by emulsified oil flow meter and water inlet flow meter, so as to control the emulsion concentration in the emulsion tank of the pump station at the source; and through the online monitoring function of the emulsion concentration sensor, the emulsion concentration in the mixing tank and the emulsion tank of the pump station is mastered in real time, and the value is transmitted to the proportioning control box in real time. The PLC in the proportioning control box can control the injection of water or oil into the mixing tank and the emulsion tank of the pump station at any time through judgment, calculation and comparison, so as to complete the fine adjustment of the emulsion concentration. The above-mentioned fine-tuning of the emulsion concentration is based on the accuracy of the numerical value monitored by the emulsion concentration sensor. However, in the actual underground emulsion distribution system or device in a coal mine, the accuracy of the numerical value monitored by the emulsion concentration sensor is very poor, and the error is large when compared with the numerical value of the handheld emulsion concentration detection shading instrument used by the mine user during acceptance, which cannot meet the mine acceptance requirements. Therefore, the fine-tuning of the emulsion concentration based on the numerical value monitored by the above-mentioned emulsion concentration sensor, whether it is adjusting the oil intake or the water intake, is based on a wrong premise, and the final result is bound to be an inaccurate result.

[0004] Patent CN 110124546 A expresses the following by “letting the reading of the emulsified oil flow sensor (6) be E, the reading of the water inlet flow meter (9) be V, the set concentration be C, and the time variable be t, then the water inlet flow rate Q 水 and emulsified oil flow Q 油 They are: Under the control of PCL in the ratio control box, Q 水 / (Q 水 +Q 油 ) is compared with C, and the water or oil adding time is adjusted to make the two values ​​equal; "The above technical solution equates the instantaneous flow monitored by the flow meter to the average flow and brings it into the integral formula for cumulative flow calculation, which itself has a large error and cannot accurately calculate and adjust the emulsion concentration; therefore, this patent can only roughly monitor the emulsion concentration, roughly perform cumulative flow calculation, and fine-tune the emulsion concentration. The final output result has a large error with the actual liquid concentration.

[0005] Patent CN 105921040A provides a method for controlling the proportioning and concentration correction of an emulsion in full automatic real-time, including a control unit, a detection unit and an execution unit. The control unit is an emulsion tank controller. The detection unit includes a concentration sensor, a proximity sensor, and a liquid level sensor. The execution unit includes an electric-controlled shutoff valve, a booster pump, a liquid distribution valve and a circulation pump. The liquid level sensor detects the liquid level value of the emulsion tank, and the electric-controlled shutoff valve implements the addition of emulsified oil. The liquid distribution valve and the booster pump implement the addition of clean water. The concentration sensor detects the proportioning concentration of the emulsion. During the real-time proportioning and concentration correction of the emulsion, the emulsion tank controller reads the detection value of the concentration sensor in real time, compares it with the target concentration, analyzes the current concentration, and automatically controls the rotation direction and rotation time of the electric-controlled shutoff valve, thereby adjusting the oil intake of the emulsified oil so that the proportioning concentration reaches the target concentration; by detecting the state of the proximity sensor, the fault detection, fault exit, and fault recovery control of the over-travel adjustment of the electric-controlled shutoff valve are performed, which is conducive to troubleshooting and solving faults. In addition, after the proportioning is completed or when it is not in the proportioning state, the emulsion concentration value is read to correct and adjust the concentration of the entire working surface. The above-mentioned real-time proportioning and concentration correction of the emulsion is still based on the detection of the emulsion concentration by the concentration sensor, and is also affected by external factors such as the underground environment of the coal mine, the type of emulsified oil, and temperature. The current concentration sensor monitoring is inaccurate and there are large errors. This has become a common problem and difficulty during underground investigations; therefore, although this patent adjusts the oil inlet of the electric control shut-off valve to make the liquid concentration reach the target concentration, the liquid concentration is still inconsistent with the actual measured concentration during the mine acceptance, and there is a large error. Even if the electric control throttle valve is adjusted to control the oil inlet, the final result is bound to be inaccurate. It is not possible to truly achieve the actual liquid concentration reaching the target concentration for mine acceptance; at the same time, the patent can only realize flow monitoring and control of emulsified oil, but cannot realize flow monitoring of emulsion outflow and water inflow. The technical solution assumes that the booster pump passing through the clean water tank is a quantitative pump, and the outflowing liquid is quantitative, so as to carry out emulsion liquid mixing. However, in fact, there is an error in the flow rate of water supplied by the booster pump to the clean water tank. In this case, even if the oil intake is accurately controlled, the water intake is not accurately detected. Regardless of forward quick adjustment, forward fine adjustment, reverse quick adjustment, or reverse fine adjustment, the premise is wrong, and the final prepared emulsion is also inaccurate.

[0006] To summarize, existing coal mines use concentration sensors to monitor the concentration of liquid distribution. Due to the influence of external factors such as the harsh underground environment, different types of emulsified oils, different temperatures, and errors in the flow of pump stations, the emulsion concentration monitoring and adjustment of the emulsion proportioning system in underground coal mines are generally inaccurate. Therefore, based on the large monitoring error of the existing emulsion concentration sensor, it is like a castle in the air to achieve accurate adjustment of the emulsified oil and water intake and precise liquid distribution, and the final output liquid distribution concentration is also inaccurate, and it is necessary to improve it. Summary of the invention

[0007] The object of the present invention is to provide a device and method for automatically adjusting and correcting the concentration of an emulsion used in mining, which is simple to operate and can improve the accuracy of liquid preparation, in view of the above problems.

[0008] In order to achieve the above object, the technical solution of the present invention is:

[0009] A device for automatically adjusting and correcting the concentration of an emulsion used in a mine comprises a mixer, wherein a liquid inlet of the mixer is respectively connected to a water tank and an emulsified oil tank pipeline, and a liquid outlet of the mixer is connected to an emulsified liquid tank pipeline; an emulsified oil flowmeter and an electronically controlled throttle valve are sequentially arranged on the connecting pipeline between the mixer and the emulsified oil tank, an emulsified liquid flowmeter is arranged on the connecting pipeline between the mixer and the emulsion tank, signal output ends of the emulsified oil flowmeter and the emulsified liquid flowmeter are both connected to the signal input end of a data acquisition substation, and the signal output end of the data acquisition substation is connected to the signal input end of the electronically controlled throttle valve.

[0010] Furthermore, the emulsion tank is provided with an emulsion level sensor for monitoring the height of the emulsion in the emulsion tank, the mixer is provided with a water pump for pumping the liquid in the water tank and the emulsion oil tank, the signal output end of the emulsion level sensor is connected to the signal input end of the data acquisition substation, and the signal output end of the data acquisition substation is connected to the signal input end of the water pump.

[0011] Furthermore, the water tank is provided with a water tank level sensor for monitoring the water level height, and the emulsified oil tank is provided with an emulsified oil level sensor for monitoring the emulsified oil height; a water tank filter is provided on the connecting pipeline between the mixer and the water tank, and an emulsified oil tank filter and a hydraulic control valve are provided in sequence on the connecting pipeline between the mixer and the emulsified oil tank; an emulsion one-way valve is provided on the connecting pipeline between the mixer and the emulsion tank.

[0012] A method for automatically adjusting and correcting the concentration of a mining emulsion, which is operated by an automatic adjustment and correction device for the concentration of a mining emulsion; and comprises the following steps:

[0013] S1. The emulsion level sensor monitors the liquid level in the emulsion tank. When the liquid level monitored by the emulsion level sensor is lower than the set minimum liquid level, the data acquisition substation controls the water pump to start dispensing liquid; under the action of negative pressure, water is drawn from the water tank into the mixer, and emulsified oil is drawn from the emulsified oil tank. The emulsified oil enters the mixer after passing through the electronically controlled throttle valve. The mixer mixes the water and emulsified oil to generate emulsion, which enters the emulsion tank after passing through the emulsion flowmeter;

[0014] S2. At the beginning of liquid preparation, the electronically controlled throttle valve is set to an initial opening of n according to the target concentration P, and the initial actual oil inflow monitored by the emulsified oil flow meter is Q 油1 , the initial outflow rate monitored by the emulsion flowmeter is Q 液1 , upload the above data to the data collection substation;

[0015] S3, data acquisition substation according to the initial liquid flow rate Q 液1 , target concentration P, calculate the initial required flow Q required in the emulsified oil circuit 油2 ; The initial actual oil intake of the collection substation is Q 油1 and the initial demand flow Q 油2 Perform comparative analysis; when Q 油1 <Q 油2 , the data acquisition substation controls the electronically controlled throttle valve to increase its opening until Q 油1 =Q 油2 ; When Q 油1 >Q 油2 , the data acquisition substation controls the electronically controlled throttle valve to reduce its opening until Q 油1 =Q 油2 ; When Q 油1 =Q 油2 , the data acquisition substation controls the opening of the electronically controlled throttle valve to remain unchanged;

[0016] S4, the data collection substation collects the interval outflow flow Q monitored by the emulsion flow meter every t seconds 液2 , the interval liquid flow Q 液2 With the initial liquid flow rate Q 液1 Conduct comparative analysis; when Q 液2 =Q 液1， The opening of the electronically controlled throttle valve remains unchanged; when Q 液2 <Q 液1 or Q 液2 >Q 液1 The data acquisition substation recalculates the interval required flow rate Q in the emulsified oil circuit based on the target concentration P. 油3 ;

[0017] S5, the interval required flow Q 油3Real-time monitoring of emulsified oil flow rate Q with emulsified oil flow meter 油4 Perform comparative analysis; when Q 油4 <Q 油3 , the data acquisition substation controls the electronically controlled throttle valve to increase its opening until Q 油4 =Q 油3 ; When Q 油4 >Q 油3 , the data acquisition substation controls the electronically controlled throttle valve to reduce its opening until Q 油4 =Q 油3 ; When Q 油4 =Q 油3 , the data acquisition substation controls the opening of the electronically controlled throttle valve to remain unchanged;

[0018] S6. Repeat steps S4 and S5, and let the data acquisition substation adjust the opening of the electronically controlled throttle valve according to the emulsion flow rate result uploaded by the emulsion flowmeter, so as to always ensure that the emulsified oil intake meets the requirement that the actual liquid concentration is consistent with the target concentration, until the emulsion level sensor detects that the liquid level in the emulsion tank is higher than the set maximum liquid level, and stops the liquid dispensing.

[0019] Furthermore, in step S6, the calculation formula for the actual solution concentration is:

[0020] P 实1 =Q 油1 / Q 液1 or P 实2 =Q 油4 / Q 液2 ;

[0021] During the preparation process, P 实1 Satisfy P 实1 =P,P 实2 Satisfy P 实2 =P.

[0022] Compared with the prior art, the present invention has the following advantages and positive effects:

[0023] The present invention utilizes flow sensors to accurately monitor the real-time flow of emulsified oil and emulsified liquid, uploads the data to a data acquisition substation, and then calculates the required emulsified oil flow according to the target concentration required by the mine and the real-time flow of the emulsified liquid, compares and analyzes the calculated emulsified oil flow with the flow monitored in real time by the emulsified oil flowmeter, controls the electronically controlled throttle valve to adjust the opening, accurately controls the emulsified oil inlet flow, and uploads the data to the data acquisition substation, and calculates the real-time concentration of the emulsion after adjusting the oil inlet through the data acquisition substation, so as to achieve the consistency between the real-time liquid distribution concentration and the target concentration accepted by the mine, thereby realizing accurate monitoring and liquid distribution of the emulsion concentration.

[0024] The present invention breaks the industry convention and abandons the emulsion concentration sensor. It creatively uses the emulsified oil and emulsion flow data monitored by the flowmeter to calculate the real-time concentration of the emulsion, and adjusts the opening of the emulsified oil electronically controlled throttle valve through feedback loop control through the data acquisition substation, so as to accurately control the oil intake of the emulsified oil. This method avoids the defects of inaccurate monitoring caused by external factors such as harsh downhole environment, different types of emulsified oil, different temperatures, and errors in pump station flow during traditional emulsion concentration sensor monitoring. It has accurate ratio concentration, stable and reliable operation, long service life, and precision that is not easily disturbed. It can quickly and accurately control the emulsion concentration and has wide practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a connection structure diagram of the device in the present invention;

[0027] Figure 2 The upper part of the flowchart of the method of the present invention;

[0028] Figure 3 The following is the lower part of the flowchart of the method in the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0030] like Figure 1 As shown, this embodiment discloses an automatic adjustment and correction device for emulsion concentration for mining, including a water tank 1, a water tank level sensor 2, a water tank filter 3, a data acquisition substation 4, an emulsion flowmeter 5, an emulsion one-way valve 6, an emulsion level sensor 7, an emulsion tank 8, a water pump 9, a mixer 10, an electronically controlled throttle valve 11, an emulsion oil flowmeter 12, a hydraulic control valve 13, an emulsion oil tank filter 14, an emulsion oil tank 15, and an emulsion oil level sensor 16.

[0031] A water tank level sensor 2 is installed on the water tank 1. Under the action of the water pump 9, the water in the water tank 1 enters the mixer 10 through the water tank filter 3; an emulsified oil level sensor 16 is installed on the emulsified oil tank 15. The emulsified oil in the emulsified oil tank 15 is connected to the hydraulic control valve 13 through the oil tank filter 14. The hydraulic control valve 13 is connected to the electric throttle valve 11, and an emulsified oil flow meter 12 is arranged between the hydraulic control valve 13 and the electric throttle valve 11; the electric throttle valve 11 is connected to the mixer 10; the water outlet of the water pump 9 is connected to the emulsion flow meter 5, the emulsion check valve 6, and the emulsion tank 8 in sequence. An emulsion level sensor 7 is installed on the emulsion tank 8; by controlling the water pump in the mixer, the liquid in the water tank and the emulsified oil tank can be extracted, and the mixed liquid can be pumped at the same time.

[0032] The hydraulic control valve 13 is arranged on the emulsified oil delivery pipeline to prevent the emulsified oil from flowing into the waterway when the equipment is not working, thereby affecting the proportioning accuracy; a pipeline is arranged on the pipeline between the water pump and the emulsion flowmeter 5, and the pipeline is connected to the hydraulic control valve 13; the hydraulic control valve is usually closed to prevent water inflow or emulsion backflow, and the hydraulically controlled one-way valve is opened only when the pump station is turned on, and it can open and close the oil circuit when the electronically controlled throttle valve fails, thereby protecting the oil circuit.

[0033] The water tank level sensor 2, water pump 9, emulsion flowmeter 5, emulsion level sensor 7, electric throttle valve 11, emulsion oil flowmeter 12, and emulsion oil level sensor 16 are all connected to the data acquisition substation 4 through cables.

[0034] The working principle of the automatic adjustment and correction device for the concentration of mining emulsion is:

[0035] When the emulsion level sensor 7 detects that the emulsion level is lower than the set minimum level, the water pump 9 starts and draws a certain flow of emulsion oil from the emulsion oil tank 15 under the action of negative pressure. The emulsion oil passes through the hydraulic control valve 13 and the electronically controlled throttle valve 11 and enters the mixer 10. After being mixed with the water pumped by the water pump, it enters the emulsion tank 8 through the emulsion flowmeter 5 and the emulsion one-way valve 6.

[0036] At the same time, if Figure 1 , Figure 2 , Figure 3 As shown, this embodiment also discloses a method for automatically adjusting and correcting the concentration of a mining emulsion, which is implemented by the above-mentioned device. The control process of the method is as follows:

[0037] S1. When the emulsion level sensor monitors that the emulsion level is lower than the set minimum level, the data acquisition substation controls the water pump 9 to start dispensing. At this time, the electronically controlled throttle valve on the emulsion oil pipeline sets the initial opening to n according to the target concentration P. The initial actual oil inflow monitored by the emulsion oil flowmeter 12 is Q.油1 , the initial outflow rate monitored by the emulsion flowmeter 5 is Q 液1 , upload the data to the data collection substation, the data collection substation is based on the initial liquid flow rate Q 液1 , target concentration P, calculate the initial required flow rate Q of the oil circuit 油2 The above data is collected by the substation to collect the initial actual oil intake Q 油1 And the initial required flow rate Q of the oil circuit 油2 Perform comparative analysis:

[0038] When Q 油1 <Q 油2 , the data acquisition substation controls the electronically controlled throttle valve opening to increase to the calculated value Q 油2 ;

[0039] When Q 油1 >Q 油2 , the data acquisition substation controls the electronically controlled throttle valve opening to decrease to the calculated value Q 油2 ;

[0040] When Q 油1 =Q 油2 , the data acquisition substation controls the electronically controlled throttle valve unchanged;

[0041] The initial actual oil inflow Q monitored by the emulsified oil flow meter 12 油1 and initial liquid flow rate Q 液1 Upload data collection substation: through P 实1 =Q 油1 / Q 液1 The actual concentration of the solution is obtained and meets P 实1 =P.

[0042] At the same time, the data substation will collect the interval outflow flow Q monitored by the emulsion flow meter 5 every t seconds. 液2 and the initial liquid flow rate Q 液1 Conduct comparative analysis:

[0043] When Q 液2 =Q 液1， The opening of the electronically controlled throttle valve is kept unchanged, and no further calculation and adjustment is required.

[0044] On the contrary, when Q 液2 <Q 液1 or Q 液2 >Q 液1 The data acquisition substation recalculates the required flow rate Q of the oil circuit interval according to the target concentration. 油3， And the real-time emulsified oil flow rate Q monitored by the emulsified oil flow meter 12 at this time 油4 Perform comparative analysis:

[0045] When Q油4 <Q 油3 , the data acquisition substation controls the electronically controlled throttle valve opening to increase to the calculated value Q 油3 ;

[0046] When Q 油4 >Q 油3 , the data acquisition substation controls the electronically controlled throttle valve opening to decrease to the calculated value Q 油3 ;

[0047] When Q 油4 =Q 油3 , the data acquisition substation controls the opening of the electronically controlled throttle valve to remain unchanged;

[0048] The real-time emulsified oil flow rate Q monitored by the emulsified oil flow meter 12 油4 and interval liquid flow rate Q 液2 Upload data to the data collection substation through P 实2 =Q 油4 / Q 液2 The actual solution concentration is obtained to meet P 实2 =P.

[0049] The above-mentioned data acquisition substation will adjust the opening of the electronically controlled throttle valve every t seconds according to the emulsion flow result uploaded by the emulsion flowmeter 5, and always ensure that the oil intake of the emulsified oil meets the requirement that the actual liquid concentration is consistent with the target concentration, until the liquid level monitored by the liquid level sensor 7 in the emulsion tank 8 is higher than the set maximum liquid level, and then stop the liquid dispensing.

[0050] In summary, the above-mentioned data acquisition substation monitors the emulsion flow in real time and uploads it to the data acquisition substation 4. The data acquisition substation 4 calculates the actual flow required by the oil circuit according to the uploaded emulsified oil and emulsion flow and the set target concentration, and compares and analyzes the calculated oil inlet volume with the oil inlet flow monitored in real time by the emulsified oil flowmeter 12, and feedback controls the electronically controlled throttle valve to adjust the oil inlet volume to achieve the actual liquid concentration P 实 =Q 油 / Q 液 =P, until the liquid level monitored by the liquid level sensor 7 in the emulsion tank 8 is higher than the set maximum liquid level, the liquid dispensing is stopped.

[0051] The present invention adopts an emulsion flowmeter 5 and an emulsified oil flowmeter 12 to accurately grasp the emulsified oil flow rate and the emulsion flow rate after proportioning in real time, and upload the data to the data acquisition substation 4, so as to quickly and accurately adjust the opening of the electronically controlled throttle valve 11, realize accurate oil intake, meet the consistency between the actual liquid preparation concentration and the target concentration, and thus realize accurate liquid preparation.

[0052] The automatic adjustment effect of the emulsion concentration in the present invention is as follows: the data acquisition substation calculates the required emulsified oil intake according to the collected emulsion preparation flow rate and the target concentration, and compares and analyzes it with the emulsified oil flow rate monitored in real time, and adjusts the opening of the electronically controlled throttle valve in real time to ensure that the emulsified oil flow rate is consistent with the calculated emulsified oil flow rate, and then uploads it to the data acquisition substation to obtain the calculated emulsion preparation concentration, which is consistent with the target concentration.

[0053] The automatic correction effect of the emulsion concentration in the present invention is as follows: the data acquisition substation monitors the emulsion flow rate at regular intervals and compares and analyzes it with the previous emulsion flow rate. When the emulsion flow rate data monitored previously is inconsistent, the data acquisition substation calculates the required emulsified oil flow rate based on the current real-time emulsion flow rate and the target emulsion concentration, and compares and analyzes it with the real-time monitored emulsion oil flow rate data, controls the opening of the electronically controlled throttle valve, adjusts the emulsified oil inlet flow rate, ensures that the real-time emulsified oil flow rate is consistent with the calculated emulsified oil flow rate, and finally uploads it to the data acquisition substation to obtain the calculated emulsion preparation concentration, ensuring that the actual emulsion preparation concentration is consistent with the target concentration; the above-mentioned monitoring, calculation and feedback adjustment process is a dynamic process, the purpose of which is to always ensure that the actual preparation concentration is consistent with the target concentration, and runs through the entire preparation process until the preparation is completed.

[0054] The present invention utilizes flow sensors to accurately monitor the real-time flow of emulsified oil and emulsified liquid, uploads the data to a data acquisition substation, and then calculates the required emulsified oil flow according to the target concentration required by the mine and the real-time flow of the emulsified liquid, compares and analyzes the calculated emulsified oil flow with the flow monitored in real time by the emulsified oil flowmeter, controls the electronically controlled throttle valve to adjust the opening, accurately controls the emulsified oil inlet flow, and uploads the data to the data acquisition substation, and calculates the real-time concentration of the emulsion after adjusting the oil inlet through the data acquisition substation, so as to achieve the consistency between the real-time liquid distribution concentration and the target concentration accepted by the mine, thereby realizing accurate monitoring and liquid distribution of the emulsion concentration.

[0055] The present invention breaks the industry convention and abandons the emulsion concentration sensor. It creatively uses the emulsified oil and emulsion flow data monitored by the flowmeter to calculate the real-time concentration of the emulsion, and adjusts the opening of the emulsified oil electronically controlled throttle valve through feedback loop control through the data acquisition substation, so as to accurately control the oil intake of the emulsified oil. This method avoids the defects of inaccurate monitoring caused by external factors such as harsh downhole environment, different types of emulsified oil, different temperatures, and errors in pump station flow during traditional emulsion concentration sensor monitoring. It has accurate ratio concentration, stable and reliable operation, long service life, and precision that is not easily disturbed. It can quickly and accurately control the emulsion concentration and has wide practicality.

Claims

1. An automatic adjustment and correction device for the concentration of a mining emulsion, comprising a mixer, wherein the liquid inlet of the mixer is respectively connected to a water tank and an emulsified oil tank pipeline, and the liquid outlet of the mixer is connected to an emulsion tank pipeline; characterized in that: An emulsified oil flowmeter and an electronically controlled throttle valve are arranged in sequence on the connecting pipeline between the mixer and the emulsified oil tank, and an emulsified liquid flowmeter is arranged on the connecting pipeline between the mixer and the emulsified liquid tank. The signal output ends of the emulsified oil flowmeter and the emulsified liquid flowmeter are both connected to the signal input end of the data acquisition substation, and the signal output end of the data acquisition substation is connected to the signal input end of the electronically controlled throttle valve.

2. The automatic adjustment and correction device for the concentration of the mining emulsion according to claim 1, characterized in that: The emulsion tank is provided with an emulsion level sensor for monitoring the height of the emulsion in the emulsion tank, the mixer is provided with a water pump for pumping the liquid in the water tank and the emulsion oil tank, the signal output end of the emulsion level sensor is connected to the signal input end of the data acquisition substation, and the signal output end of the data acquisition substation is connected to the signal input end of the water pump.

3. The automatic adjustment and correction device for the concentration of the mining emulsion according to claim 2, characterized in that: The water tank is provided with a water tank level sensor for monitoring the water level height, and the emulsified oil tank is provided with an emulsified oil level sensor for monitoring the emulsified oil height; the connecting pipeline between the mixer and the water tank is provided with a water tank filter, and the connecting pipeline between the mixer and the emulsified oil tank is provided with an emulsified oil tank filter and a hydraulic control valve in sequence; the connecting pipeline between the mixer and the emulsified liquid tank is provided with an emulsion one-way valve.

4. A method for automatically adjusting and correcting the concentration of a mining emulsion, which is operated by the automatic adjustment and correction device for the concentration of a mining emulsion according to claim 2; characterized in that: The following steps are involved: S1. The emulsion level sensor monitors the liquid level in the emulsion tank. When the liquid level monitored by the emulsion level sensor is lower than the set minimum liquid level, the data acquisition substation controls the water pump to start dispensing liquid; under the action of negative pressure, water is drawn from the water tank into the mixer, and emulsified oil is drawn from the emulsified oil tank. The emulsified oil enters the mixer after passing through the electronically controlled throttle valve. The mixer mixes the water and emulsified oil to generate emulsion, which enters the emulsion tank after passing through the emulsion flowmeter; S2. At the beginning of liquid preparation, the electronically controlled throttle valve is set to an initial opening of n according to the target concentration P, and the initial actual oil inflow monitored by the emulsified oil flow meter is Q 油1 , the initial outflow rate monitored by the emulsion flowmeter is Q 液1 , upload the above data to the data collection substation; S3, data acquisition substation according to the initial liquid flow rate Q 液1 , target concentration P, calculate the initial required flow Q required in the emulsified oil circuit 油2 ; The initial actual oil intake of the collection substation is Q 油1 and the initial demand flow Q 油2 Perform comparative analysis; when Q 油1 <Q 油2 , the data acquisition substation controls the electronically controlled throttle valve to increase its opening until Q 油1 =Q 油2 ; When Q 油1 >Q 油2 , the data acquisition substation controls the electronically controlled throttle valve to reduce its opening until Q 油1 =Q 油2 ; When Q 油1 =Q 油2 , the data acquisition substation controls the opening of the electronically controlled throttle valve to remain unchanged; S4, the data collection substation collects the interval outflow flow Q monitored by the emulsion flow meter every t seconds 液2 , the interval liquid flow Q 液2 With the initial liquid flow rate Q 液1 Conduct comparative analysis; when Q 液2 =Q 液1， The opening of the electronically controlled throttle valve remains unchanged; When Q 液2 <Q 液1 or Q 液2 >Q 液1 The data acquisition substation recalculates the interval required flow rate Q required in the emulsified oil circuit based on the target concentration P. 油3 ; S5, the interval required flow Q 油3 Real-time monitoring of emulsified oil flow rate Q with emulsified oil flow meter 油4 Perform comparative analysis; when Q 油4 <Q 油3 , the data acquisition substation controls the electronically controlled throttle valve to increase its opening until Q 油4 =Q 油3 ; When Q 油4 >Q 油3 , the data acquisition substation controls the electronically controlled throttle valve to reduce its opening until Q 油4 =Q 油3 ; When Q 油4 =Q 油3 , the data acquisition substation controls the opening of the electronically controlled throttle valve to remain unchanged; S6. Repeat steps S4 and S5, and let the data acquisition substation adjust the opening of the electronically controlled throttle valve according to the emulsion flow rate result uploaded by the emulsion flowmeter, so as to always ensure that the emulsified oil intake meets the requirement that the actual liquid concentration is consistent with the target concentration, until the emulsion level sensor detects that the liquid level in the emulsion tank is higher than the set maximum liquid level, and stops the liquid dispensing.

5. The method for automatically adjusting and correcting the concentration of a mining emulsion according to claim 4, characterized in that: In step S6, the calculation formula of the actual solution concentration is: P 实1 =Q 油1 / Q 液1 or P 实2 =Q 油4 / Q 液2 ; During the preparation process, P 实1 Satisfy P 实1 =P,P 实2 Satisfy P 实2 =P.

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