Automatic feeding system for thickening agent production

Abstract

The utility model relates to the technical field of thickening agent production, in particular to an automatic feeding system for thickening agent production, which comprises delivery pipes mounted on a plurality of storage tanks, a control mechanism is mounted on each delivery pipe, and each control mechanism comprises a plurality of mass flowmeters. The plurality of mass flow meters are respectively mounted on the plurality of conveying pipes and are in communication connection with the PLC, a first conveying pump and an electromagnetic valve are also mounted on each conveying pipe, one ends, far away from the material storage tank, of the plurality of conveying pipes are jointly connected with a mixing pipe, and the mixing pipe is used for conveying mixed raw materials into a reaction kettle; the method has the effect of improving the accuracy of the mixing ratio of the fracturing thickening agent.

Description

Technical Field

[0001] This utility model relates to the technical field of thickener production, and in particular to an automated feeding system for thickener production. Background Technology

[0002] In oil and gas field development, fracturing thickeners need to be injected for different geological reservoirs. Thickeners can inhibit the coagulation of organic precipitates such as acid slag, dissolve and disperse them, prevent organic precipitates from damaging the oil layer, and achieve the effects of slowing down, reducing filtration and promoting the discharge of formation particles to the surface.

[0003] Fracturing thickener is a novel high-temperature, high-salt resistant emulsion polymer, mainly produced by high-speed emulsification and reaction of functional polymer monomers, white oil, and various emulsifiers containing special functional groups. Current raw material feeding methods primarily involve manual metering, pumping, or direct addition to the mixing tank. These methods suffer from inaccurate metering and easy mixing of various materials. In particular, different emulsifiers are affected by ambient temperature, and due to differences in viscosity and density, inaccurate metering frequently occurs, resulting in poor emulsification and products failing to meet expected quality requirements. Utility Model Content

[0004] To improve the accuracy of fracturing thickener mixing ratio, this application provides an automated feeding system for thickener production.

[0005] This application provides an automated feeding system for thickener production, which adopts the following technical solution:

[0006] An automated feeding system for thickener production includes conveying pipes installed on multiple storage tanks. Each conveying pipe is equipped with a control mechanism, which includes multiple mass flow meters. The multiple mass flow meters are respectively installed on the multiple conveying pipes and are communicatively connected to a PLC controller. A first conveying pump and a solenoid valve are also installed on each conveying pipe. The ends of the multiple conveying pipes away from the storage tanks are connected to a common mixing pipe, which is used to transport the mixed raw materials to a reaction vessel.

[0007] By adopting the above technical solution, when producing thickener, the proportion coefficient is input into the PLC controller according to the corresponding raw material ratio based on the environment. Then, the solenoid valve is activated, opening the delivery pipe. The first delivery pump is then activated, transporting the raw materials to the reactor through the mixing pipe. Simultaneously, multiple mass flow meters control the delivery amount of each raw material. When a certain raw material reaches the required addition amount, the PLC controller controls the solenoid valve on the corresponding delivery pipe to close, thereby improving the accuracy of the fracturing thickener mixing ratio and reducing the probability of poor emulsification effect and product failure to meet expected quality requirements due to inaccurate manual addition.

[0008] Optionally, a stirring mechanism is provided on the mixing tube. The stirring mechanism includes a stirring tank, a stirring shaft, stirring blades, and a power assembly. The top of the stirring tank is connected to the mixing tube. The stirring shaft is rotatably disposed in the stirring tank through the power assembly. The stirring blades are fixedly connected to the stirring shaft.

[0009] By adopting the above technical solution, the mixing mechanism enables more thorough mixing of various raw materials, thereby reducing the probability of poor emulsification due to poor mixing effect and the product failing to meet the expected quality requirements; when the raw materials are being mixed, the power component drives the mixing shaft to mix, the mixing shaft drives the mixing blades to rotate, and the mixing blades mix the raw materials.

[0010] Optionally, the power assembly includes a motor, a first gear, and a second gear. The motor is fixedly connected to the top of the mixing tank. The first gear is keyed to the output shaft of the motor, and the second gear is keyed to the mixing shaft and meshes with the first gear. The diameter of the first gear is smaller than the diameter of the second gear.

[0011] By adopting the above technical solution, when the raw materials are stirred and mixed, the motor starts, the motor drives the stirring shaft to rotate, and the stirring shaft drives the stirring blades to stir the raw materials. At the same time, because the diameter of the first gear is smaller than that of the second gear, the stirring shaft obtains greater torque and the stirring is more thorough.

[0012] Optionally, the stirring mechanism further includes a cleaning assembly, which includes a first connecting rod, a second connecting rod, and a scraper. The first connecting rod is fixedly connected to the stirring shaft, the second connecting plate is fixedly connected to the first connecting rod and perpendicular to the axis of the first connecting rod, and the scraper is fixedly connected to the first connecting rod and fits against the inner sidewall of the stirring tank.

[0013] By adopting the above technical solution, the cleaning component reduces the adhesion between the raw materials and the inner wall of the mixing tank, thereby making the mixing ratio more accurate and also helping to keep the mixing tank clean. When cleaning is performed, the motor starts, the motor drives the stirring shaft to rotate, the stirring shaft drives the first connecting rod to rotate, the first connecting rod drives the second connecting rod to rotate, the second connecting rod drives the scraper to rotate, and the scraper cleans and scrapes the inner wall of the mixing tank.

[0014] Optionally, the stirring mechanism further includes a nozzle, which is fixedly connected to one end of the mixing tube located inside the mixing tank.

[0015] By adopting the above technical solution, the nozzle is designed to spray the raw materials into the mixing tank, thereby making the mixing of the raw materials more thorough.

[0016] Optionally, a feed pipe is also installed at the bottom of the mixing tank. A second conveying pump and a heating mechanism are installed on the feed tank. The heating mechanism includes an insulation sleeve and a heating wire. The heating wire is fixedly connected to the outer wall of the feed pipe. The insulation sleeve is fitted onto the feed pipe. The heating wire is connected to a heating power source.

[0017] By adopting the above technical solution, the heating wire and insulation jacket are used to heat the raw materials after stirring, thereby improving the emulsification effect.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. In existing technologies, thickeners are added manually, which leads to poor emulsification due to the low accuracy of manual measurement. In this application, during the production of the thickener, the proportion coefficient of the raw materials is input into the PLC controller according to the environment and the corresponding proportion. Then, the solenoid valve is activated to open the delivery pipe, and the first delivery pump is started to transport the raw materials to the reactor through the mixing pipe. At the same time, multiple mass flow meters control the delivery amount of each raw material. When a certain raw material reaches the addition amount, the PLC controller controls the solenoid valve on the corresponding delivery pipe to close, thereby improving the accuracy of the fracturing thickener mixing ratio and reducing the probability of poor emulsification and failure to meet the expected quality requirements due to inaccurate manual addition.

[0020] 2. In the prior art, the mixed raw materials are usually directly added to the reaction vessel. In fact, the mixing of various raw materials is not very thorough at this time, so there is a probability of poor emulsification. This application adds a stirring mechanism on the basis of the prior art. When stirring, the motor starts and drives the stirring shaft to rotate. The stirring shaft drives the stirring blades to stir the raw materials. At the same time, because the diameter of the first gear is smaller than that of the second gear, the stirring shaft obtains a larger torque and the stirring is more thorough.

[0021] 3. This application also includes a cleaning component in the mixing tank. When cleaning is performed, the motor starts, drives the stirring shaft to rotate, the stirring shaft drives the first connecting rod to rotate, the first connecting rod drives the second connecting rod to rotate, and the second connecting rod drives the scraper to rotate. The scraper cleans and scrapes the inner wall of the mixing tank. The scraper reduces the adhesion between the raw materials and the inner wall of the mixing tank, thereby making the mixing ratio more accurate and also helping to keep the mixing tank clean.

[0022] 4. This application also adds a heating mechanism before feeding. The heating mechanism consists of a heating wire and an insulation jacket. The heating wire heats the mixed raw materials entering the reactor, thereby improving the emulsification efficiency. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the automated feeding system for thickener production in the embodiments of this application;

[0024] Figure 2 This is a cross-sectional view of the stirring mechanism in an embodiment of this application;

[0025] Figure 3 For this application Figure 2 Enlarged view of part A in the middle;

[0026] Figure 4 This is a cross-sectional view of the heating mechanism in an embodiment of this application.

[0027] Reference numerals: 1. Storage tank; 2. Conveying pipe; 3. Mixing pipe; 4. Control mechanism; 41. Mass flow meter; 42. First conveying pump; 43. Solenoid valve; 5. Stirring mechanism; 51. Stirring tank; 52. Stirring shaft; 53. Stirring blade; 54. Power assembly; 541. Motor; 542. First gear; 543. Second gear; 55. Cleaning assembly; 551. First connecting rod; 552. Second connecting rod; 553. Scraper; 56. Nozzle; 6. Feed pipe; 7. Second conveying pump; 8. Heating mechanism; 81. Heating wire; 82. Insulation jacket; 9. Reactor. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0029] This application discloses an automated feeding system for thickener production.

[0030] refer to Figure 1 An automated feeding system for thickener production includes multiple conveying pipes 2 fixedly connected to multiple storage tanks 1. A control mechanism 4 is installed on each conveying pipe 2. The control mechanism 4 includes multiple mass flow meters 41, which are respectively installed on the multiple conveying pipes 2. Each mass flow meter 41 is communicatively connected to a PLC controller. A first conveying pump 42 and a solenoid valve 43 are installed on the side wall of each of the multiple conveying pipes 2. Both the first conveying pump 42 and the solenoid valve 43 are communicatively connected to the PLC controller. A mixing pipe 3 is fixedly connected to the end of each of the multiple conveying pipes 2 away from the storage tanks 1. A stirring mechanism 5 for stirring the raw materials is provided at one end of the mixing pipe 3. A feed pipe 6 is provided at the end of the stirring mechanism 5 away from the mixing pipe 3. The end of the feed pipe 6 away from the stirring mechanism 5 is located in a reaction vessel 9. A second conveying pump 7 and a heating mechanism 8 are also installed on the side wall of the feed pipe 6.

[0031] When feeding materials during thickener production, the PLC controller opens all the solenoid valves 43. Then, each first delivery pump 42 draws the required raw materials into the delivery pipe 2, and then delivers the raw materials to the mixing pipe 3 through the delivery pipe 2. At this time, the mass flow meter 41 controls the mass of each raw material entering the mixing pipe 3. Then, the raw materials are injected into the stirring mechanism 5 through the mixing pipe 3 for stirring and mixing. The mixed raw materials after stirring are injected into the reactor 9 by the second delivery pump 7 through the feed pipe 6. At the same time, the heating mechanism 8 heats the mixed raw materials, making the reaction speed of the mixed raw materials injected into the reactor 9 faster. This improves the accuracy of the fracturing thickener mixing ratio and reduces the probability of poor emulsification effect and product failure to meet the expected quality requirements due to inaccurate manual addition.

[0032] refer to Figure 2 and Figure 3 The mixing mechanism 5 includes a mixing tank 51, which is connected to the end of the mixing pipe 3 away from the storage tank 1. A mixing shaft 52 is rotatably connected in the mixing tank 51. Multiple mixing blades 53 are fixedly connected to the side wall of the mixing shaft 52. The direction of the mixing blades 53 is perpendicular to the axis of the mixing shaft 52. A power assembly 54 is also provided on the mixing tank 51. The power assembly 54 includes a motor 541, which is fixedly connected to the end face of the top of the mixing tank 51. A first gear 542 is keyed to the output shaft of the motor 541. A second gear 543 is fixedly connected to the end of the mixing shaft 52 near the first gear 542. The first gear 542 and the second gear 543 mesh, and the diameter of the first gear 542 is smaller than the diameter of the second gear 543. A nozzle 56 is fixedly connected to the end of the mixing pipe 3 located inside the storage tank 1.

[0033] The mixing mechanism 5 allows for further mixing of the raw materials, resulting in a more thorough mixing of multiple raw materials. This reduces the probability of poor emulsification due to poor mixing, which could lead to products failing to meet expected quality requirements. Simultaneously, the diameter of the first gear 542 is smaller than that of the second gear 543, resulting in greater torque on the mixing shaft 52 and more thorough mixing. The nozzle 56 ensures more uniform spraying of the raw materials, further enhancing the thorough mixing of the materials.

[0034] A cleaning assembly 55 is also provided on the stirring shaft 52. The cleaning assembly 55 includes two first connecting rods 551. Both first connecting rods are fixedly connected to the side wall of the stirring shaft 52 and are located at the end of the stirring shaft 52 near the second gear 543. The direction of the first connecting rods 551 is perpendicular to the axis of the stirring shaft 52. A second connecting rod 552 is fixedly connected to the ends of the two first connecting rods 551 that are far apart from each other. The direction of the second connecting rods 552 is perpendicular to the axis of the first connecting rods 551. A scraper 553 is fixedly connected to the end faces of the second connecting rods 552 that are far apart from each other. The direction of the scraper 553 is parallel to the direction of the second connecting rods 552.

[0035] The scraper 553 is designed to facilitate the scraping of mixed materials adhering to the inner wall of the mixing tank 51, thereby making the mixing of materials more thorough and reducing the probability of inaccurate proportions due to material adhesion. It also facilitates the cleaning of the mixing tank 51. When cleaning the mixing tank 51, the motor 541 is started, which drives the first gear 542 to rotate. The first gear 542 drives the second gear 543 to rotate, which drives the stirring shaft 52 to rotate. The stirring shaft 52 drives the first connecting rod 551 to rotate, which drives the second connecting rod 552 to rotate. The second connecting rod 552 drives the scraper 553 to rotate, and the scraper 553 cleans the inner wall of the mixing tank 51.

[0036] refer to Figure 4 The feed pipe 6 is also equipped with a heating mechanism 8, which includes a heating wire 81. The heating wire 81 is fixedly connected to the outer side of the feed pipe 6. The outer side of the feed pipe 6 is also covered with a heat insulation sleeve 82. The heating wire 81 is located between the heat insulation sleeve 82 and the feed pipe 6.

[0037] The heating wire 81 enables the heating of the mixed raw materials, thereby improving the reaction efficiency of the mixed raw materials. At the same time, the heat insulation jacket 82 reduces the rate of heat loss from the heating wire 81, making the heating effect of the heating wire 81 better.

[0038] The implementation principle of an automated feeding system for thickener production according to an embodiment of this application is as follows: When feeding thickener during production, a reasonable raw material ratio is first designed based on the usage environment of the thickener. This ratio is then input into the PLC controller. The PLC controller then controls the corresponding solenoid valve 43 to open, and simultaneously, the corresponding first conveying pump 42 draws the raw material through the conveying pipe 2 into the mixing pipe 3. At this time, the mass flow meter 41 reads the drawn raw material. When the required raw material reaches the preset amount, the mass flow meter 41 provides feedback to the PLC controller, which then controls the corresponding solenoid valve 43 to open. Valve 43 is closed; the extracted raw material is sprayed into the mixing tank 51 through the nozzle 56 on the mixing pipe 3, and then the motor 541 is started. The motor 541 drives the first gear 542 to rotate, the first gear 542 drives the second gear 543 to rotate, the second gear 543 drives the stirring shaft 52 to rotate, and the stirring shaft 52 drives the stirring blade 53 to rotate, thereby stirring the mixed raw material in the mixing tank 51. Then the second delivery pump 7 is started to transport the stirred and mixed raw material to the feed pipe 6. At this time, the heating wire 81 preheats the mixed raw material, and then the heated mixed raw material is transported to the reaction vessel 9 for reaction.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automated feeding system for thickener production, comprising conveying pipes (2) fixedly connected to multiple storage tanks (1), wherein a mixing pipe (3) is fixedly connected to one end of each of the multiple conveying pipes (2) away from the storage tanks (1), the mixing pipe (3) being used to transport the mixed raw materials to a reaction vessel (9), characterized in that, It also includes a control mechanism (4) installed on the conveying pipe (2), the control mechanism (4) including multiple mass flow meters (41), the multiple mass flow meters (41) are respectively installed on multiple conveying pipes (2) and are connected in communication with the PLC controller, and a first conveying pump (42) and a solenoid valve (43) are also installed on the conveying pipe (2).

2. The automated feeding system for thickener production according to claim 1, characterized in that, A stirring mechanism (5) is provided on the mixing tube (3). The stirring mechanism (5) includes a stirring tank (51), a stirring shaft (52), stirring blades (53), and a power assembly (54). The top of the stirring tank (51) is connected to the mixing tube (3). The stirring shaft (52) is rotatably connected to the stirring tank (51) through the power assembly (54). The stirring blades (53) are fixedly connected to the stirring shaft (52).

3. The automated feeding system for thickener production according to claim 2, characterized in that, The power assembly (54) includes a motor (541), a first gear (542), and a second gear (543). The motor (541) is fixedly connected to the mixing tank (51). The first gear (542) is keyed to the output shaft of the motor (541). The second gear (543) is keyed to the mixing shaft (52) and meshes with the first gear (542). The diameter of the first gear (542) is smaller than the diameter of the second gear (543).

4. The automated feeding system for thickener production according to claim 2, characterized in that, The stirring mechanism (5) further includes a cleaning component (55), which includes a first connecting rod (551), a second connecting rod (552), and a scraper (553). The first connecting rod (551) is fixedly connected to the stirring shaft (52), the second connecting rod (552) is fixedly connected to the first connecting rod (551) and perpendicular to the axis of the first connecting rod (551), and the scraper (553) is fixedly connected to the first connecting rod (551) and fits against the inner side wall of the stirring tank (51).

5. The automated feeding system for thickener production according to claim 2, characterized in that, The stirring mechanism (5) also includes a nozzle (56), which is fixedly connected to one end of the mixing tube (3) located inside the mixing tank (51).

6. The automated feeding system for thickener production according to claim 2, characterized in that, The bottom end of the mixing tank (51) is also equipped with a feed pipe (6), on which a second delivery pump (7) and a heating mechanism (8) are installed. The heating mechanism (8) includes a heat insulation sleeve (82) and a heating wire (81). The heating wire (81) is fixedly connected to the outer wall of the feed pipe (6), the heat insulation sleeve (82) is fitted on the feed pipe (6), and the heating wire (81) is connected to a heating power source.

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