Multifunctional automatic continuous acid mixing equipment

Abstract

This invention discloses a multifunctional automated continuous acid mixing device. A power unit is connected to a hydraulic system, which in turn is connected to an anti-corrosion manifold. The anti-corrosion manifold is connected to a mixing device, a mixing tank, a clean water centrifugal pump, a discharge centrifugal pump, and a chemical additive device. A powder metering and conveying device is connected between the mixing device and the feeding device. The mixing tank is connected to the chemical additive device and has a first and a second partition. The clean water centrifugal pump is connected to the first partition of the mixing tank. The first acid centrifugal pump is connected to a first high-energy mixer in the mixing device, which is also connected to the first partition of the mixing tank. The second acid centrifugal pump is connected to a second high-energy mixer in the mixing device, which is connected to both the first and second partitions of the mixing tank via the anti-corrosion manifold. The discharge centrifugal pump is connected to both the first and second partitions of the mixing tank via the anti-corrosion manifold.

Description

Technical Field

[0001] This invention relates to the field of acidizing equipment for oil and gas field production enhancement, and in particular to a multifunctional automated continuous acid mixing equipment. Background Technology

[0002] With the development of oil production technology, acidizing processes, as a measure to increase oilfield production, are being used more and more frequently. Large-scale and ultra-large-scale acid fracturing operations are becoming more and more common, and the requirements for acid quality are also getting higher and higher.

[0003] Currently, oilfield operations employ a manual batch mixing process for acid, water, and chemical additives, involving manual calculation and recording of the concentrations and dosages of each component. For different acid formulations, the mixing process must be adjusted promptly. Several days prior to acid fracturing operations, the finished acid solution is prepared. However, the manually mixed acid solution often results in low precision and significant waste. This process demands highly skilled personnel, involves high workload, poses significant safety hazards, and lacks effective record-keeping and traceability, failing to meet the requirements of modern oilfield operations.

[0004] The manual batch mixing process requires the preparation of numerous storage tanks for the acid, water, and finished acid. These tanks occupy a large area, are occupied for a long time, and require frequent hoisting operations, all of which consume significant manpower and resources. Therefore, the existing preparation process has high requirements for well site configuration and cannot meet the requirements of large-scale continuous acid fracturing operations.

[0005] Therefore, it is necessary to provide a new type of multifunctional automated continuous acid preparation equipment to overcome the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a multifunctional automated continuous acid preparation equipment that can precisely control the concentration and dosage of acid, water and chemical additives to prepare high-quality finished acid solutions.

[0007] To achieve the above objectives, the present invention provides a multifunctional automated continuous acid preparation device, including a support device;

[0008] The power unit, hydraulic system, powder metering and conveying device, mixing device, mixing tank, clean water centrifugal pump, first acid centrifugal pump, second acid centrifugal pump, discharge centrifugal pump, anti-corrosion manifold device, chemical additive device, gas circuit device, feeding device and intelligent control device are assembled on the bearing device.

[0009] The power unit is connected to the hydraulic system, the hydraulic system is connected to the anti-corrosion manifold 12, and the anti-corrosion manifold 12 is connected to the mixing device, mixing tank, clean water centrifugal pump, discharge centrifugal pump, and chemical additive device.

[0010] The powder metering and conveying device is connected between the mixing device and the feeding device; the mixing tank is connected to the chemical additive device, and the mixing tank has a first compartment and a second compartment inside; the clean water centrifugal pump is connected to the first compartment of the mixing tank through a corrosion-resistant manifold.

[0011] The first acid centrifugal pump is connected to the first high-energy mixer of the mixing device through an anti-corrosion manifold. The first high-energy mixer is connected to the first compartment of the mixing tank. The second acid centrifugal pump is connected to the second high-energy mixer of the mixing device through an anti-corrosion manifold. The second high-energy mixer is connected to the first compartment and the second compartment of the mixing tank through an anti-corrosion manifold. The discharge centrifugal pump is connected to the first compartment and the second compartment of the mixing tank through an anti-corrosion manifold.

[0012] Preferably, it also includes a power distribution device, which is connected between the power unit and the hydraulic system.

[0013] Preferably, it also includes an acid mist neutralization tank, which is connected to the mixing tank.

[0014] Preferably, the powder metering and conveying device includes a first powder storage tank, a second powder storage tank, a first screw conveyor, a second screw conveyor, a first screw conveyor speed sensor, a second screw conveyor speed sensor, a first powder tank electronic scale, and a second powder tank electronic scale;

[0015] The first powder storage tank is connected to the first high-energy mixer via a first screw conveyor, and the second powder storage tank is connected to the second high-energy mixer via a second screw conveyor. The first screw conveyor transports the powder from the first powder storage tank to the first mixer; the second screw conveyor transports the powder from the second powder storage tank to the second mixer. A speed sensor for the first screw conveyor is installed on the first screw conveyor, and a speed sensor for the second screw conveyor is installed on the second screw conveyor. An electronic scale for the first powder tank is installed on the first powder storage tank, and an electronic scale for the second powder tank is installed on the second powder storage tank.

[0016] Preferably, the mixing tank is equipped with a stirrer, an electronic level gauge, and a level viewing window; the electronic level gauge is located at the top of the mixing tank, and the level viewing window is provided with a scale.

[0017] Preferably, a stirrer is provided in the first compartment and a stirrer is provided in the second compartment. The multifunctional automated continuous acid mixing equipment also includes a clean water flow meter. The clean water centrifugal pump is connected to the clean water flow meter through an anti-corrosion manifold device. The clean water flow meter is connected to the first compartment of the mixing tank.

[0018] Preferably, it also includes a first acid flow meter, the first acid centrifugal pump is connected to the first acid flow meter through an anti-corrosion manifold, and the first acid flow meter is connected to the first high-energy mixer.

[0019] Preferably, it also includes a second liquid acid flow meter, the second acid centrifugal pump is connected to the second acid flow meter through a corrosion-resistant manifold, and the second acid flow meter is connected to the second high-energy mixer.

[0020] Preferably, it also includes a discharge flow meter, wherein the discharge centrifugal pump is connected to the discharge flow meter via a corrosion-resistant manifold, and the discharge flow meter is connected to the second compartment of the mixing tank.

[0021] Preferably, the intelligent control device is electrically connected to the power device, hydraulic system, chemical additive device, feeding device, first acid flow meter, second acid flow meter, clean water flow meter, discharge flow meter, electronic level gauge, first spiral conveyor, second spiral conveyor, first spiral conveyor speed sensor, second spiral conveyor speed sensor, first powder tank electronic scale, and second powder tank electronic scale.

[0022] Compared with existing technologies, the advantages are: 1) It enables the immediate preparation and use of acid solutions with different formulations, and through intelligent control systems and metering devices such as flow meters and electronic scales, it enables precise control of the concentration and dosage of acid solutions, water and chemical additives, so as to prepare high-quality finished acid solutions, and can also prevent safety hazards caused by improper dosage.

[0023] 2) It can record, store, and automatically generate reports in real time the acid, dispensing, and clean water during the operation through intelligent control devices, which facilitates later traceability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a side view of the multifunctional automated continuous acid preparation equipment provided by the present invention.

[0026] Figure 2 for Figure 1 An enlarged view of region A shown.

[0027] Figure 3 This is a side view of the other side of the multifunctional automated continuous acid mixing equipment provided by the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the invention and are not intended to limit the invention.

[0029] It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Furthermore, the terms "left" and "right" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0032] Please see Figures 1 to 3 The present invention provides a multifunctional automated continuous acid mixing equipment, including a support device 1 (vehicle body);

[0033] The following components are mounted on the supporting device 1: a power unit 2 (motor), a power distribution device 3, a hydraulic system 4, a powder metering and conveying device 5, a mixing device 6, a mixing tank 7, a clean water centrifugal pump 8, a first acid centrifugal pump 9, a second acid centrifugal pump 10, a discharge centrifugal pump 11, an anti-corrosion manifold device 12, a chemical additive device 13, a gas circuit device 14, a feeding device 15, an acid mist neutralization tank 16, and an intelligent control device 17; the power unit 2, the power distribution device 3, and the hydraulic system 4 are connected in sequence.

[0034] The hydraulic system 4 is connected to the air supply device 14 and the anti-corrosion manifold device 12. The anti-corrosion manifold device 12 is connected to the mixing device 6, the mixing tank 7, the clean water centrifugal pump 8, the discharge centrifugal pump 11, and the chemical additive device 13.

[0035] The powder metering and conveying device 5 is connected between the mixing device 6 and the feeding device 15, so that the feeding device 15 conveys the powder to the powder metering and conveying device 5, and then the powder metering and conveying device 5 conveys it to the high-efficiency mixer for mixing.

[0036] The mixing tank 7 is connected to the chemical additive device 13 and the acid mist neutralization tank 16. The mixing tank 7 has a first compartment and a second compartment separated from the first compartment. The acid mist neutralization tank 16 is connected to the mixing tank 7 so that the alkaline solution in the acid mist neutralization tank 16 neutralizes the fumes generated by the acid solution (hydrochloric acid, hydrofluoric acid, etc.) in the mixing tank 7.

[0037] The clean water centrifugal pump 8 is connected to the mixing tank 7 via an anti-corrosion manifold 12. The first acid centrifugal pump 9 is connected to the first acid flow meter 20 via the anti-corrosion manifold 12. The first acid flow meter 20 is connected to the first high-energy mixer 24. The first high-energy mixer 24 is connected to the first compartment of the mixing tank 7.

[0038] The second acid centrifugal pump 10 is connected to the second acid flow meter 21 via an anti-corrosion manifold 12. The second acid flow meter 21 is connected to the second high-energy mixer 25. The second high-energy mixer 25 is connected to the first and second compartments of the mixing tank 7 via the anti-corrosion manifold 12. The discharge centrifugal pump 11 is connected to the discharge flow meter 22 via the anti-corrosion manifold 12. The discharge flow meter 22 is connected to the second compartment of the mixing tank 7. In this embodiment, the intelligent control device 17 can be an industrial control computer.

[0039] Furthermore, the powder metering and conveying device 5 includes a first powder storage tank 26, a second powder storage tank 27, a first screw conveyor 42, a second screw conveyor 43, a first screw conveyor speed sensor 44, a second screw conveyor speed sensor 45, a first powder tank electronic scale 46, and a second powder tank electronic scale 47.

[0040] The first powder storage tank 26 is connected to the first high-energy mixer 24 via a first screw conveyor 42, and the second powder storage tank 27 is connected to the second high-energy mixer 25 via a second screw conveyor 43. The first screw conveyor 42 transports the powder from the first powder storage tank 26 to the first mixer 24, achieving powder-solution mixing; the second screw conveyor 43 transports the powder from the second powder storage tank 27 to the second mixer 24, achieving powder (slow-release synergist, gelling agent, etc.)-solution mixing. A speed sensor 44 is installed on the first screw conveyor 42 to detect the speed of the first screw conveyor. The second screw conveyor speed sensor 45 is installed on the second screw conveyor 43 to detect the operating speed of the second screw conveyor 43; the first powder tank electronic scale 46 is installed on the first powder storage tank 26 to detect the weight of the powder in the first powder storage tank 26, and the first powder tank electronic scale 46 uploads the detected weight information to the intelligent control device 17; the second powder tank electronic scale 47 is installed on the second powder storage tank 27 to detect the weight of the powder in the second powder storage tank 27, and the second powder tank electronic scale 47 uploads the detected weight information to the intelligent control device 17.

[0041] Furthermore, the mixing tank 7 is equipped with a stirrer 18, an electronic level gauge 28, and a level viewing window 29; the stirrer 18 is used to stir the materials in the mixing tank 7 to ensure thorough mixing; the electronic level gauge 28 is located at the top of the mixing tank 7 so that relevant personnel can observe the liquid level on the multi-functional automated continuous acid mixing equipment; the level viewing window 29 is provided with a scale so that relevant personnel can observe the liquid level while standing in the mixing tank 7.

[0042] Furthermore, a stirrer 18 is provided in the first compartment and a stirrer 18 is provided in the second compartment. The multifunctional automated continuous acid mixing equipment also includes a clean water flow meter 22. The clean water centrifugal pump 8 is connected to the clean water flow meter 22 through an anti-corrosion manifold device 12. The clean water flow meter 22 is connected to the first compartment of the mixing tank 7.

[0043] Furthermore, the multifunctional automated continuous acid dispensing equipment also includes a first acid flow meter 20, the first acid centrifugal pump 9 is connected to the first acid flow meter 20 through an anti-corrosion manifold device 12, and the first acid flow meter 20 is connected to the first high-energy mixer 24.

[0044] Furthermore, the multifunctional automated continuous acid dispensing equipment also includes a second liquid acid flow meter 21, the second acid centrifugal pump 10 is connected to the second acid flow meter 21 through an anti-corrosion manifold device 12, and the second acid flow meter 21 is connected to the second high-energy mixer 25.

[0045] Furthermore, the multifunctional automated continuous acid mixing equipment also includes a discharge flow meter 23. The discharge centrifugal pump 11 is connected to the discharge flow meter 23 through a corrosion-resistant manifold device 12. The discharge flow meter 23 is connected to the second compartment of the mixing tank 7.

[0046] Furthermore, the chemical additive device 13 includes a plurality of liquid addition pumps (namely, a first liquid addition pump 30, a second liquid addition pump 31, a third liquid addition pump 32, a fourth liquid addition pump 33, a fifth liquid addition pump 34, and a sixth liquid addition pump 35) and a plurality of liquid addition flow meters (namely, a first liquid addition flow meter 37, a second liquid addition flow meter 37, a third liquid addition flow meter 38, a fourth liquid addition flow meter 39, a fifth liquid addition flow meter 40, and a sixth liquid addition flow meter 41). The plurality of liquid addition pumps are connected to the anti-corrosion manifold device 12 through the plurality of liquid addition flow meters, and the plurality of liquid addition flow meters are electrically connected to the intelligent control device 17.

[0047] Specifically, the first liquid filling pump 30 is connected to the anti-corrosion manifold 12 via the first liquid filling flow meter 36, the second liquid filling pump 31 is connected to the anti-corrosion manifold 12 via the second liquid filling flow meter 37, the third liquid filling pump 32 is connected to the anti-corrosion manifold 12 via the third liquid filling flow meter 38, the fourth liquid filling pump 33 and the fourth liquid filling flow meter 39 are connected to the anti-corrosion manifold 12, the fifth liquid filling pump 34 and the fifth liquid filling flow meter 40 are connected to the anti-corrosion manifold 12, and the sixth liquid filling pump 35 is connected to the anti-corrosion manifold 12 via the sixth liquid filling flow meter 40.

[0048] Thus, when the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35 are connected to the mixing tank 7 and the anti-corrosion manifold device 12 to transport chemical additives, it is convenient to detect the flow rate of the chemical additives (such as iron ion stabilizers, discharge aids, and consumables) transported by the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35 respectively through the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35.

[0049] Furthermore, the intelligent control device 17 is electrically connected via wiring to several liquid addition pumps and several liquid addition flow meters of the power device 2, hydraulic system 4, chemical additive device 13, feeding device 15, first acid flow meter 20, second acid flow meter 21, clean water flow meter 22, discharge flow meter 23, electronic level gauge 28, first liquid addition flow meter 36, second liquid addition flow meter 37, third liquid addition flow meter 38, fourth liquid addition flow meter 39, fifth liquid addition flow meter 40, sixth liquid addition flow meter 41, first spiral conveyor 42, second spiral conveyor 43, first spiral conveyor speed sensor 44, second spiral conveyor speed sensor 45, first powder tank electronic scale 46, and second powder tank electronic scale 47.

[0050] Furthermore, the multifunctional automated continuous acid dispensing equipment also includes a cooling fan 19, which is installed on the support device 1 and arranged adjacent to the power device.

[0051] Implementation Method 1

[0052] Taking the mixing of gelling acid formulation as an example, the workflow is as follows: The clean water centrifugal pump 8 draws clean water from the outside into the first compartment of the mixing tank 7 through the anti-corrosion manifold 12. The intelligent control device 17 records the instantaneous and cumulative discharge of clean water through the clean water flow meter 22. The first acid centrifugal pump 9 draws the first acid solution from the outside into the first high-energy mixer 24 through the anti-corrosion manifold 12, and then flows into the first compartment of the mixing tank 7. The first high-energy mixer 24 generates negative pressure through the flowing acid solution, drawing the first powder from the first powder storage tank 26 and mixing it with the flowing acid solution in real time in the first high-energy mixer 24 to form the first solution. The intelligent control device 17 records the instantaneous and cumulative discharge of the first solution through the first acid flow meter 20.

[0053] The intelligent control device 17 records the amount of the first powder fed through the first powder tank electronic scale 46. The water in the first compartment of the mixing tank 7 and the first solution are mixed again by a stirrer 18 to form a second solution. The second acid centrifugal pump 10 draws the second solution from the first compartment of the mixing tank 7 through the anti-corrosion manifold device 12 into the second high-energy mixer 25, and then flows into the second compartment of the mixing tank 7. The second high-energy mixer 25 generates negative pressure by the flow of the second solution, and draws the powder 2 and the flowing solution 2 from the second powder storage tank 27 and mixes them online in real time in the second high-energy mixer 25 to form a third solution.

[0054] The intelligent control device 17 records the instantaneous discharge and cumulative discharge of the third solution through the second acid flow meter 21. The intelligent control device 17 records the amount of the second powder material fed through the second powder tank electronic scale 47. The third solution in the second compartment of the mixing tank 7 is mixed again by another stirrer 18 to form the finished acid solution.

[0055] The electronic level gauge 28 on the mixing tank 7 feeds back the liquid level in the mixing tank 7 to the intelligent control device 17. The chemical additive device 13 adds liquid chemical additives to the mixing tank 7 and the anti-corrosion manifold device 12 respectively through several liquid addition pumps (first liquid addition pump 30, second liquid addition pump 31, third liquid addition pump 32, fourth liquid addition pump 33, fifth liquid addition pump 34, and sixth liquid addition pump 35) as required.

[0056] The intelligent control device 17 records the instantaneous and cumulative discharge of liquid chemical additives through several liquid addition flow meters (first liquid addition flow meter 36, second liquid addition flow meter 37, third liquid addition flow meter 38, fourth liquid addition flow meter 39, fifth liquid addition flow meter 40, and sixth liquid addition flow meter 41). The discharge centrifugal pump 11 draws finished acid solution from the second compartment of the mixing tank 7 and discharges it into the user's storage tank or operating equipment. The intelligent control device 17 records the instantaneous and cumulative discharge of finished acid solution through the flow information detected by the discharge flow meter 23.

[0057] To ensure the quality of the finished acid solution, the intelligent control device 17 receives detection signals from the first acid flow meter 20, the second acid flow meter 21, the clean water flow meter 22, the discharge flow meter 23, the electronic level gauge 28, the first liquid addition flow meter 36, the second liquid addition flow meter 37, the third liquid addition flow meter 38, the fourth liquid addition flow meter 39, the fifth liquid addition flow meter 40, the sixth liquid addition flow meter 41, the first screw conveyor speed sensor 44, the second screw conveyor speed sensor 45, the first powder tank electronic scale 46, and the second powder tank electronic scale 47.

[0058] The intelligent control device 17 automatically compares the concentration of the gelling acid formula with the preset concentration in real time. If there is a deviation between the amount of water added and the preset concentration of the gelling acid formula, the intelligent control device 17 adjusts the instantaneous discharge of the water centrifugal pump 8 in real time by sending a control signal to the hydraulic system 4 to ensure that the ratio of the amount of water added is consistent with the preset concentration of the gelling acid formula.

[0059] Similarly, when there is a deviation between the added amount of acid, the first powder, the second powder, and various chemical additives and the preset gelling acid formula, the intelligent control device 17 adjusts the added amount of the first acid centrifugal pump 9, the second acid centrifugal pump 10, the first spiral powder conveyor 42, the second spiral powder conveyor 43, the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35 in real time by sending control signals from the hydraulic system 4. This ensures that the added amount of acid, the first powder, the second powder, and various chemical additives is consistent with the preset gelling acid formula concentration, thereby guaranteeing the quality of the finished acid solution.

[0060] To prevent the mixing tank from overflowing and causing safety accidents during operation, the intelligent control device 17 uses the liquid level signal fed back by the electronic liquid level gauge 28, and the flow signals fed back by the first acid flow meter 20, the second acid flow meter 21, the clean water flow meter 22, the discharge flow meter 23, the first liquid addition flow meter 36, the second liquid addition flow meter 37, the third liquid addition flow meter 38, the fourth liquid addition flow meter 39, the fifth liquid addition flow meter 40, and the sixth liquid addition flow meter 41. The intelligent control device 17 adjusts the instantaneous discharge of the clean water centrifugal pump 8, the first acid centrifugal pump 9, the second acid centrifugal pump 10, the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35 in real time by sending control signals to the hydraulic system 4, so as to ensure that the liquid level in the mixing tank 7 is maintained at a safe level and avoid overflowing.

[0061] Implementation Method 2

[0062] Taking conventional formula mixing as an example, the workflow is as follows: The clean water centrifugal pump 8 draws clean water from the outside into the first compartment of the mixing tank 7 through the anti-corrosion manifold 12. The intelligent control device 17 records the instantaneous and cumulative discharge of clean water through the clean water flow meter 22. The first acid centrifugal pump 9 draws the first acid from the outside into the first high-energy mixer 24 through the anti-corrosion manifold 12, and then flows into the first compartment of the mixing tank 7. The first high-energy mixer 24 generates negative pressure through the flowing acid, drawing the first powder from the first powder storage tank 26 and mixing it with the flowing acid in the first high-energy mixer 24 in real time to form the first solution. The intelligent control device 17 records the instantaneous and cumulative discharge of acid through the first acid flow meter 20.

[0063] The intelligent control device 17 records the amount of the first powder fed into the tank via the first powder tank electronic scale 46. The second acid centrifugal pump 10 draws the second acid solution from the outside into the second high-energy mixer 25 via the anti-corrosion manifold 12, and then flows into the first compartment of the mixing tank 7. The second high-energy mixer 25 generates negative pressure by the flow of the second solution, drawing the second powder from the second powder storage tank 27 and mixing it with the flowing second solution in real time in the second high-energy mixer 25 to form a third solution. The intelligent control device 17 records the instantaneous and cumulative discharge of the third solution via the second acid flow meter 21. The intelligent control device 17 also records the amount of the second powder fed into the tank via the second powder tank electronic scale 47. In the first compartment of the mixing tank 7, the water, the first solution, and the second solution are mixed again by the stirrer 18 to form the finished acid solution.

[0064] The electronic level gauge 28 on the mixing tank 7 feeds back the liquid level in the mixing tank 7 to the intelligent control device 17. The chemical additive device 13 adds liquid chemical additives to the mixing tank 7 and the anti-corrosion manifold device 12 respectively through several liquid addition pumps (first liquid addition pump 30, second liquid addition pump 31, third liquid addition pump 32, fourth liquid addition pump 33, fifth liquid addition pump 34, and sixth liquid addition pump 35) as required. The intelligent control device 17 records the instantaneous discharge and cumulative discharge of various liquid chemical additives through several liquid addition flow meters (first liquid addition flow meter 36, second liquid addition flow meter 37, third liquid addition flow meter 38, fourth liquid addition flow meter 39, fifth liquid addition flow meter 40, and sixth liquid addition flow meter 41). The discharge centrifugal pump 11 draws finished acid from the first compartment of the mixing tank 7 into the user's storage tank or operating equipment. The intelligent control device 17 records the instantaneous discharge and cumulative discharge of finished acid through the discharge flow meter 23.

[0065] To ensure the quality of the finished acid solution, the intelligent control device 17 receives detection signals from the first acid flow meter 20, the second acid flow meter 21, the clean water flow meter 22, the discharge flow meter 23, the electronic level gauge 28, the first liquid addition flow meter 36, the second liquid addition flow meter 37, the third liquid addition flow meter 38, the fourth liquid addition flow meter 39, the fifth liquid addition flow meter 40, the sixth liquid addition flow meter 41, the first spiral conveyor speed sensor 44, the second spiral conveyor speed sensor 45, the first powder tank electronic scale 46, and the second powder tank electronic scale 47. The intelligent control device 17 then automatically compares the concentration of the solution with the preset gelling acid formula in real time.

[0066] If the amount of water added deviates from the preset concentration of gelling acid formula, the intelligent control device 17 adjusts the instantaneous discharge of the water centrifugal pump 8 in real time by sending a control signal to the hydraulic system 4 to ensure that the amount of water added is consistent with the formula.

[0067] Similarly, when there is a deviation between the added amount of acid, the first powder, the second powder, and various chemical additives and the preset value of the gelling acid formula, the intelligent control device 17 adjusts the added amount of the first acid centrifugal pump 9, the second acid centrifugal pump 10, the first spiral powder conveyor 42, the second spiral powder conveyor 43, the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35 in real time by sending control signals to the hydraulic system 4, so as to ensure that the added amount and ratio of acid, the first powder, the second powder, and various chemical additives are consistent, so as to guarantee the quality of the finished acid solution.

[0068] To prevent overflow and safety accidents during operation, the intelligent control device 17 uses the liquid level signal fed back by the electronic liquid level gauge 28 and the flow signals fed back by the first acid flow meter 20, the second acid flow meter 21, the clean water flow meter 22, the discharge flow meter 23, the first liquid addition flow meter 36, the second liquid addition flow meter 37, the third liquid addition flow meter 38, the fourth liquid addition flow meter 39, the fifth liquid addition flow meter 40, and the sixth liquid addition flow meter 41. The intelligent control device 17 adjusts the instantaneous discharge of the clean water centrifugal pump 8, the first acid centrifugal pump 9, the second acid centrifugal pump 10, the first liquid addition pump 30, the second liquid addition pump 31, the third liquid addition pump 32, the fourth liquid addition pump 33, the fifth liquid addition pump 34, and the sixth liquid addition pump 35 in real time by sending control signals to the hydraulic system 4. This ensures that the liquid level in the mixing tank 7 is maintained at a safe level and avoids overflow.

[0069] The present invention is not limited to the description in the specification and embodiments, and thus other advantages and modifications can be readily realized by those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices and examples shown and described herein without departing from the spirit and scope of the general concept as defined by the claims and their equivalents.

Claims

1. A multifunctional automated continuous acid preparation device, characterized in that, Includes the support device (1); The power unit (2), hydraulic system (4), powder metering and conveying device (5), mixing device (6), mixing tank (7), clean water centrifugal pump (8), first acid centrifugal pump (9), second acid centrifugal pump (10), discharge centrifugal pump (11), anti-corrosion manifold device (12), chemical additive device (13), feeding device (15) and intelligent control device (17) are assembled on the bearing device (1). The power unit (2) is connected to the hydraulic system (4), the hydraulic system (4) is connected to the anti-corrosion manifold (12), and the anti-corrosion manifold (12) is connected to the mixing device (6), the mixing tank (7), the clean water centrifugal pump (8), the discharge centrifugal pump (11), and the chemical additive device (13). The powder metering and conveying device (5) is connected between the mixing device (6) and the feeding device (15); the mixing tank (7) is connected to the chemical additive device (13), and the mixing tank (7) has a first compartment and a second compartment inside; the clean water centrifugal pump (8) is connected to the first compartment of the mixing tank (7) through an anti-corrosion manifold device (12). The first acid centrifugal pump (9) is connected to the first high-energy mixer (24) of the mixing device (6) through the anti-corrosion manifold (12). The first high-energy mixer (24) is connected to the first compartment of the mixing tank (7). The second acid centrifugal pump (10) is connected to the second high-energy mixer (25) of the mixing device (6) through the anti-corrosion manifold (12). The second high-energy mixer (25) is connected to the first compartment and the second compartment of the mixing tank (7) through the anti-corrosion manifold (12). The discharge centrifugal pump (11) is connected to the first compartment and the second compartment of the mixing tank (7) through the anti-corrosion manifold (12).

2. The multifunctional automated continuous acid preparation equipment as described in claim 1, characterized in that, It also includes a power distribution device (3), which is connected between the power unit (2) and the hydraulic system (4).

3. The multifunctional automated continuous acid preparation equipment as described in claim 1, characterized in that, It also includes an acid mist neutralization tank (16), which is connected to the mixing tank (7).

4. The multifunctional automated continuous acid preparation equipment as described in claim 1, characterized in that, The powder metering and conveying device (5) includes a first powder storage tank (26), a second powder storage tank (27), a first spiral powder conveyor (42), a second spiral powder conveyor (43), a first spiral powder conveyor speed sensor (44), a second spiral powder conveyor speed sensor (45), a first powder tank electronic scale (46), and a second powder tank electronic scale (47). The first powder storage tank (26) is connected to the first high-energy mixer (24) via the first screw conveyor (42), and the second powder storage tank (27) is connected to the second high-energy mixer (25) via the second screw conveyor (43). The first screw conveyor (42) transports the powder in the first powder storage tank (26) to the first high-energy mixer (24); the second screw conveyor (43) transports the powder in the second powder storage tank (27) to the second high-energy mixer (25). The first screw conveyor speed sensor (44) is installed on the first screw conveyor (42), and the second screw conveyor speed sensor (45) is installed on the second screw conveyor (43). The first powder tank electronic scale (46) is installed on the first powder storage tank (26), and the second powder tank electronic scale (47) is installed on the second powder storage tank (27).

5. The multifunctional automated continuous acid preparation equipment as described in claim 4, characterized in that, The mixing tank (7) is equipped with a stirrer (18), an electronic level gauge (28) and a level viewing window (29); the electronic level gauge (28) is located on the top of the mixing tank (7), and the level viewing window (29) is provided with a scale.

6. The multifunctional automated continuous acid preparation equipment as described in claim 5, characterized in that, A stirrer (18) is provided in the first compartment and a stirrer (18) is provided in the second compartment. The multifunctional automated continuous acid mixing equipment also includes a clean water flow meter (22). The clean water centrifugal pump (8) is connected to the clean water flow meter (22) through a corrosion-resistant manifold device (12). The clean water flow meter (22) is connected to the first compartment of the mixing tank (7).

7. The multifunctional automated continuous acid preparation equipment as described in claim 6, characterized in that, It also includes a first acid flow meter (20), the first acid centrifugal pump (9) is connected to the first acid flow meter (20) through a corrosion-resistant manifold device (12), and the first acid flow meter (20) is connected to the first high-energy mixer (24).

8. The multifunctional automated continuous acid preparation equipment as described in claim 7, characterized in that, It also includes a second acid flow meter (21), the second acid centrifugal pump (10) is connected to the second acid flow meter (21) through a corrosion-resistant manifold device (12), and the second acid flow meter (21) is connected to the second high-energy mixer (25).

9. The multifunctional automated continuous acid preparation equipment as described in claim 8, characterized in that, It also includes a discharge flow meter (23), the discharge centrifugal pump (11) is connected to the discharge flow meter (23) through a corrosion-resistant manifold device (12), and the discharge flow meter (23) is connected to the second compartment of the mixing tank (7).

10. The multifunctional automated continuous acid preparation equipment as described in claim 9, characterized in that, The intelligent control device (17) is electrically connected to the power device (2), hydraulic system (4), chemical additive device (13), feeding device (15), first acid flow meter (20), second acid flow meter (21), clean water flow meter (22), discharge flow meter (23), electronic level gauge (28), first spiral powder conveyor (42), second spiral powder conveyor (43), first spiral powder conveyor speed sensor (44), second spiral powder conveyor speed sensor (45), first powder tank electronic scale (46), and second powder tank electronic scale (47).

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