Modularized skid-mounted intelligent feedback regulation and control system for online mixing of fracturing fluid dry powder

Abstract

The invention relates to the technical field of fracturing fluid mixing regulation and control, and discloses a modular skid-mounted intelligent feedback regulation and control system for online mixing of fracturing fluid dry powder, comprising: an adjusting assembly comprising a skid-mounted assembly, a main control module arranged in the skid-mounted assembly, and a mixing module arranged on the main control module; the feedback regulation and control assembly comprises a mixing temperature sensing module arranged on the mixing tank body, a mixing feedback module arranged on the mixing tank body and a lock control module arranged on the mixing tank body, and the feedback regulation and control assembly feeds back and regulates the mixing module; the mixing feedback module receives pressure and flow data of the circulating water assembly and pipeline pressure data of the pipeline pressure monitoring module at the same time, fitting analysis is conducted through the early warning module, if pressure abnormity or flow fluctuation occurs, the material adding speed is adjusted synchronously, system feedback adjustment is conducted, and system stability is ensured.

Description

Technical Field

[0001] This invention relates to the field of fracturing fluid mixing and control technology, and in particular to a modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder. Background Technology

[0002] The main thickener used in large-scale fracturing operations for unconventional (shale oil, shale gas, tight oil, tight gas, coalbed methane) oil and gas resource extraction is modified polyacrylamide, which is mainly available in two product types: reverse emulsion and suspension emulsion.

[0003] In the process of mixing fracturing fluid, when water and thickener are used as aqueous solutions, the water is not treated and does not have the function of pre-mixing water and thickener. This results in insufficient mixing of water and thickener when they directly enter the mixing tank and come into contact with the powder. In addition, the raw materials of fracturing fluid are basically prepared in advance according to the specified amount. If a continuous mixing mode is adopted, the amount of each material cannot be controlled in real time, so it is impossible to accurately prepare fracturing fluid that meets the standards. Therefore, there is a lack of a system that can monitor and adjust the preparation in real time. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder, comprising: an adjustment component, including a skid-mounted component, a main control module disposed within the skid-mounted component, and a mixing module disposed on the main control module; a mixing module, including a mixing tank disposed on the skid-mounted component, a dry powder conveying component disposed on the mixing tank, a liquid mixing component disposed on the mixing tank, and an output pipe disposed on the mixing tank; a feedback control component, including a mixing temperature sensing module disposed on the mixing tank, a mixing feedback module disposed on the mixing tank, and a locking control module disposed on the mixing tank, wherein the feedback control component provides feedback to adjust the mixing module; and a circulating water component connected to the mixing tank.

[0008] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, the circulating water component includes a circulating water pipeline connected to the mixing tank, a cooling module connected to the circulating water pipeline, a pressure sensing module installed on the circulating water pipeline, a temperature sensing module installed on the circulating water pipeline, and an electromagnetic flow meter installed on the circulating water pipeline.

[0009] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, the locking module includes a conveying control module disposed on the dry powder conveying component and a liquid conveying control module disposed on the liquid mixing component. The liquid mixing component includes a mixing water tank disposed within the skid-mounted assembly, a conveying pipeline disposed between the mixing tank and the mixing water tank, and a water volume control component disposed at the end of the conveying pipeline. The liquid conveying control module is connected to the water volume control component.

[0010] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, the mixing feedback module includes an early warning module and a pipeline pressure monitoring module. The early warning module is used to compare the data from the pipeline pressure monitoring module, the electromagnetic flowmeter, and the temperature sensing module, and to fit the data. The pipeline pressure monitoring module is used to monitor the pressure in each pipeline within the system. The early warning module is equipped with an alarm module.

[0011] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, the dry powder conveying component includes a dry powder storage box disposed within the skid-mounted assembly, a dry powder conveying pipeline connected to the dry powder storage box, a dry powder drying component disposed within the dry powder conveying pipeline, and a dry powder injection head disposed at the end of the dry powder conveying pipeline. A conveying roller is disposed within the dry powder conveying pipeline, and a conveying auger is disposed on the conveying roller. An outlet plate is disposed at the upper end of the dry powder conveying pipeline, and a mating ring plate that cooperates with the conveying auger is disposed on the outlet plate. A distance changing component is disposed between the conveying auger and the conveying roller.

[0012] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, wherein: the delivery pipeline is connected to the dry powder injection head, the dry powder injection head includes a main pipeline, a first pipeline and a second pipeline disposed on the main pipeline, the first pipeline is connected to the dry powder delivery pipeline, the second pipeline is connected to the delivery pipeline, the front end of the first pipeline is sleeved on the front end of the second pipeline, the first pipeline is connected to the main pipeline, a water-passing plate is provided on the second pipeline, the water-passing plate is connected to the inner wall of the first pipeline, a plurality of water-passing holes are opened on the water-passing plate, and a control component is provided at the end of the second pipeline extending towards the main pipeline.

[0013] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, the control component includes a sliding guide rail disposed on the end of the second pipeline, a drive rod slidably connected to the sliding guide rail, a plurality of first drive rods and second drive rods rotatably connected to the sliding guide rail, and a baffle plate connecting the ends of the first drive rods and the second drive rods. A guide rod is disposed on the drive rod, and the length of the second drive rod is greater than that of the first drive rod.

[0014] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention, the baffle includes a plate shell, a cavity opened in the plate shell, a plurality of perforated plates disposed in the cavity, and a cover plate disposed on the plate shell, wherein the cover plate slides to expose the perforated plates.

[0015] As a preferred embodiment of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder described in this invention, a fluid guiding component is provided at the connection point of the two baffles.

[0016] The beneficial effects of this invention are as follows: The mixing feedback module simultaneously receives pressure and flow data from the circulating water component and pipeline pressure data from the pipeline pressure monitoring module. Through fitting analysis by the early warning module, if pressure abnormalities or flow fluctuations occur, the material addition rate or stirring intensity is adjusted synchronously to ensure system stability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0019] Figure 2 This is a top view schematic diagram of the overall structure of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0020] Figure 3 This is a schematic diagram of the feedback control component of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0021] Figure 4 This is a schematic diagram of the dry powder conveying component of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0022] Figure 5 This is a cross-sectional schematic diagram of the dry powder conveying component of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of the dry powder injection head of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0024] Figure 7 This is a schematic diagram of the fluid guiding components and control components of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0025] Figure 8 This is a schematic diagram of the baffle connection structure of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0026] Figure 9 This is a schematic diagram of the control components of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0027] Figure 10 This is a schematic diagram of the first and second sliding plates of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0028] Figure 11 This is a schematic diagram of the liquid flow direction of the liquid guiding component of the modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder according to the present invention.

[0029] Explanation of reference numerals in the attached drawings: 100, Adjustment component; 101, Skid-mounted component; 102, Main control module; 103, Mixing module; 103a, Mixing tank; 104, Dry powder conveying component; 105, Liquid mixing component; 106, Output pipeline; 200, Feedback control component; 201, Mixing temperature sensing module; 202, Mixing feedback module; 203, Locking module; 300, Circulating water component; 301, Circulating water pipeline. 302. Cooling module; 303. Pressure sensing module; 304. Temperature sensing module; 305. Electromagnetic flowmeter; 203a. Conveying control module; 203b. Liquid conveying control module; 105a. Mixing water tank; 105b. Conveying pipeline; 104a. Dry powder storage tank; 104b. Dry powder conveying pipeline; 104c. Dry powder drying component; 104d. Conveying shaft roller; 104e. Conveying auger; 400. Dry powder spray head; 401, main pipe; 402, first pipe; 403, second pipe; 404, water-passing plate; 405, control component; 405a, sliding guide rail; 405b, drive rod; 405c, first drive rod; 405d, second drive rod; 405e, baffle; 405f, guide rod; 405g, slide bar; 405h, slide rail; 500, liquid guiding component; 501, main channel; 502, first circulation unit 503, Second circulating unit; 504, Slide groove; 505, First baffle plate; 506, Second baffle plate; 507, First sliding plate; 508, Second sliding plate; 405e-1, Main baffle plate; 405e-2, Plate shell; 405e-3, Cavity; 405e-4, Perforated plate; 405e-4, Cover plate; 509a, First slide rod; 509b, Second slide rod; 509c, Pull rod; 509d, Slot. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0034] Example 1

[0035] Reference Figures 1-11 This is the first embodiment of the present invention, which provides a modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder, including an adjustment component 100. In this embodiment, the adjustment component 100 includes a skid-mounted component 101, a main control module 102 disposed within the skid-mounted component 101, and a mixing module 103 disposed on the main control module 102. The skid-mounted component 101 is mainly an external structural component in the form of a frame. This external structural component includes an external frame, which is composed of a steel frame, and a base plate is provided at the lower end of the external frame. The base plate is detachably connected to the external frame, and several mounting holes are also provided on the external frame to facilitate the installation of this external frame in the working position or docking with other external frames.

[0036] The main control module 102 is the main control console set on the base plate. The main control console is mainly used by the operator to perform operations such as control, command input, and program control.

[0037] Furthermore, the present invention also includes a mixing module 103. In this embodiment, the mixing module 103 includes a mixing tank 103a disposed on the skid-mounted assembly 101, a dry powder conveying component 104 disposed on the mixing tank 103a, a liquid mixing component 105 disposed on the mixing tank 103a, and an output pipe 106 disposed on the mixing tank 103a. The mixing tank 103a is disposed at the center of the bottom plate, and the dry powder is conveyed on the mixing tank 103a by the dry powder conveying component 104. After the dry powder is conveyed into the mixing tank 103a, water is added by the liquid mixing component 105 to perform the fracturing fluid mixing operation.

[0038] Furthermore, the present invention also includes a feedback control component 200. In this embodiment, the feedback control component 200 includes a mixing temperature sensing module 201 disposed on the mixing tank 103a, a mixing feedback module 202 disposed on the mixing tank 103a, and a locking control module 203 disposed on the mixing tank 103a. The feedback control component 200 provides feedback adjustment to the mixing module 103.

[0039] Among them, the mixing temperature sensing module 201 is used to monitor the temperature inside the mixing tank 103a in real time, and adopts a PT100 thermistor sensor with a sampling frequency of 10Hz; the mixing feedback module 202 is used to receive multi-source data such as temperature, pressure, and liquid level, calculate the adjustment amount through PID algorithm, and output control signal to the mixing module 103; the lock control module 203 is used for safety redundancy mechanism, which triggers emergency shutdown or restricts operation when parameters are abnormal to prevent the risk of loss of control.

[0040] The mixing temperature sensing module 201, acting as a front-end sensing unit, monitors the temperature of the mixing tank 103a in real time and converts the temperature signal into an electrical signal, which is then transmitted to the mixing feedback module 202. Upon receiving the electrical signal from the mixing temperature sensing module 201, the mixing feedback module 202 first converts it into a corresponding temperature value. Then, based on a built-in preset temperature threshold range (e.g., the optimal mixing temperature range for a fracturing fluid is T1-T2, and the safety threshold is set to T...), the module... min ℃ and T max The converted temperature values ​​were compared and analyzed (°C).

[0041] When the temperature value is between T1 and T2, the mixing feedback module 202 determines that the mixing process is normal and sends a command to the mixing module 103 to "maintain the current material addition rate, stirring intensity and other mixing parameters" in order to maintain a stable mixing state.

[0042] When the temperature value is lower than T1, the mixing feedback module 202 analyzes the reason for the low temperature. If it is determined that the heat source input is insufficient, it sends an instruction to the mixing module 103 to increase the heat source supply, such as increasing the power of the heating device. If it is determined that the material ratio is not suitable, resulting in insufficient heat release from the reaction (if the current heat source output has reached 80% of the rated power and the temperature is still dropping, it is determined to be a material ratio problem), it sends an instruction to adjust the material addition ratio and increase the amount of easily exothermic materials added.

[0043] When the temperature value is higher than T2, the mixing feedback module 202 also analyzes the cause. If it is due to excessive heat input, it issues an instruction to reduce the heat supply; if it is due to excessive material reaction, it issues an instruction to reduce the material addition rate or adjust the ratio.

[0044] When the temperature is below T min ℃ or higher than T max At a certain temperature, the mixing feedback module 202 immediately sends a locking command to the locking module 203, and records the temperature data and related mixing parameters at that time, providing a basis for subsequent troubleshooting.

[0045] After receiving the instruction from the mixing feedback module 202, the mixing module 103 performs the corresponding operation according to the instruction: if it receives the instruction to "maintain the current material addition rate, stirring intensity and other mixing parameters", the mixing module 103, liquid mixing component 105 and other components maintain the original operating state to ensure the continuity of the mixing process.

[0046] If an instruction to adjust the material addition ratio or speed is received, the mixing module 103 adjusts the material pump speed to change the amount and speed of material addition, thereby adjusting the mixing temperature.

[0047] If a command to adjust the heat source input is received, the mixing module 103 controls the working status of the heating or cooling device, such as increasing the voltage of the heating tube to increase heat output, or opening the valve of the cooling water pipeline to introduce cooling water to reduce the temperature.

[0048] Furthermore, the present invention also includes a circulating water assembly 300, which is connected to the mixing tank 103a. In this embodiment, the circulating water assembly 300 includes a circulating water pipeline 301 connected to the mixing tank 103a, a cooling module 302 connected to the circulating water pipeline 301, a pressure sensing module 303 installed on the circulating water pipeline 301, a temperature sensing module 304 installed on the circulating water pipeline 301, and an electromagnetic flowmeter 305 installed on the circulating water pipeline 301. The circulating water pipeline 301 is connected to the outside and is located outside the mixing tank 103a. The circulating water pipeline 301 is connected to the mixing tank 103a through an output pipe 106. The cooling module 302 is mainly used to cool the liquid in the circulating water pipeline 301, because the circulating water pipeline 301 will carry away the heat of the mixing tank 103a. Heat is often generated during mixing, and excessive heat can easily affect the internal mixing.

[0049] Preferably, by using the pressure sensing module 303, temperature sensing module 304, and electromagnetic flow meter 305, the pressure, temperature, and flow rate in the current circulating water pipeline 301 can be monitored, thereby monitoring the liquid condition in the circulating pipeline.

[0050] Furthermore, in this embodiment, the dry powder conveying component 104 includes a dry powder storage box 104a disposed within the skid-mounted assembly 101, a dry powder conveying pipeline 104b connected to the dry powder storage box 104a, a dry powder drying component 104c disposed within the dry powder conveying pipeline 104b, and a dry powder spraying head 400 disposed at the end of the dry powder conveying pipeline 104b. The dry powder storage box 104a is disposed within the frame and is used to store dry powder. The dry powder conveying pipeline 104b connects from the dry powder storage box 104a to the mixing tank 103a, and the position of the dry powder storage box 104a is lower than the height position of the mixing tank 103a.

[0051] The dry powder drying element 104c is located at the connection between the dry powder conveying pipeline 104b and the mixing tank 103a. The dry powder spray head 400 extends from the dry powder conveying pipeline 104b into one end of the mixing tank 103a after being connected to the dry powder drying element 104c. In this embodiment, the dry powder drying element 104c includes a drying box located at the end of the dry powder conveying pipeline 104b, a dehumidifier located inside the drying box, and an air conveyor connected to the dehumidifier. When the dry powder is transported into the drying box, it is mixed with the dry air dehumidified by the dehumidifier, and the dry air disperses and atomizes the originally aggregated dry powder, thereby allowing the dry powder to suspend in the drying box, which is beneficial for subsequent transportation. A dry powder filter element is provided at the rear end of the dry powder spray head 400.

[0052] The dry powder filter element is installed inside the dry powder spray head 400, mainly including a filter plate. The aperture of the filter plate is smaller than the diameter of the dry powder. An air extraction pipe is installed on the dry powder spray head 400 and connected to the other side of the filter plate, so that air can be extracted and dry powder can be left behind.

[0053] Furthermore, a transport roller 104d is provided inside the dry powder conveying pipeline 104b, a conveying auger 104e is provided on the transport roller 104d, and an outlet plate is provided at the upper end of the dry powder conveying pipeline 104b. The outlet plate is inclined and its upper surface is recessed.

[0054] Furthermore, in this embodiment, the locking module 203 includes a conveying control module 203a disposed on the dry powder conveying component 104 and a liquid conveying control module 203b disposed on the liquid mixing component 105. The conveying control module 203a is mainly used to control the conveying speed of the conveying auger 104e, thereby controlling the amount of dry powder transported, while the liquid conveying control module 203b mainly controls the amount of water transported in the mixing water tank 105a.

[0055] Furthermore, in this embodiment, the mixing feedback module 202 includes an early warning module and a pipeline pressure monitoring module. The early warning module is used to compare the data from the pipeline pressure monitoring module, the electromagnetic flowmeter 305, and the temperature sensing module 304, and to fit the data. The pipeline pressure monitoring module is used to monitor the pressure in each pipeline within the system. An alarm module is provided on the early warning module.

[0056] Furthermore, the conveying pipe 105b is connected to the dry powder spraying head 400. In this embodiment, the dry powder spraying head 400 includes a main pipe 401, a first pipe 402 and a second pipe 403 disposed on the main pipe 401. The second pipe 403 is connected to the dry powder conveying pipe 104b. The front end of the first pipe 402 is sleeved on the front end of the second pipe 403. The first pipe 402 is connected to the main pipe 401. A water-passing plate 404 is disposed on the second pipe 403. The water-passing plate 404 is connected to the inner wall of the first pipe 402. A plurality of water-passing holes are opened on the water-passing plate 404. A control component 405 is disposed at the end of the second pipe 403 extending towards the main pipe 401.

[0057] In this embodiment, the liquid mixing component 105 includes a mixing tank 105a disposed in the skid-mounted assembly 101, a conveying pipe 105b disposed between the mixing tank 103a and the mixing tank 105a, and a water volume control component disposed at the end of the conveying pipe 105b. The water volume control component is a valve. The liquid conveying control module 203b and the conveying pipe 105b are connected to the first pipe 402.

[0058] In this embodiment, two sets of control components 405 are provided on the outer side of the second pipe 403. Each control component 405 includes a sliding guide rail 405a disposed on the outer wall of the second pipe 403, a drive rod 405b slidably connected to the sliding guide rail 405a, a plurality of first drive rods 405c and second drive rods 405d rotatably connected to the sliding guide rail 405a, and a baffle 405e hinged to the ends of the first drive rods 405c and second drive rods 405d. A guide rod 405f is provided on the drive rod 405b. A first drive rod 405c and two second drive rods 405d are connected to a baffle 405e. A first drive rod 405c and a second drive rod 405d are provided on one side of the baffle 405e. The first drive rod 405c is located away from the end of the second pipe 403, and the second drive rod 405d is located near the end of the second pipe 403. The first drive rod 405c and the second drive rod 405d extend outwards to both ends of the sliding guide rail 405a, and a connecting member is provided between them and the inner side of the baffle 405e.

[0059] Preferably, the guide rod 405f extends outward from both sides of the sliding guide rail 405a, and a slide bar 405g is provided on each second drive rod 405d. A slide track 405h is provided on the guide rod 405f, and the slide track 405h is slidably connected to the slide bar 405g.

[0060] Preferably, an electronically controlled cylinder is provided at the rear end of the drive rod 405b.

[0061] Furthermore, the baffle 405e includes a main baffle 405e-1. When the two baffles 405e are joined together, the baffle 405e will abut against the conical outlet sidewall, thereby achieving closure.

[0062] Furthermore, the baffle 405e also includes a plate housing 405e-2 connected to the main baffle 405e-1, a cavity 405e-3 opened in the plate housing 405e-2, a plurality of perforated plates 405e-4 disposed in the cavity 405e-3, and a cover plate 405e-4 disposed on the plate housing 405e-2. The plate housing 405e-2 is disposed on the main baffle 405e-1, while the cavity 405e-3 is connected to the outside. Two cover plates 405e-4 are provided to seal the cavity 405e-3. After the cover plate 405e-4 slides, the perforated plates 405e-4 are exposed.

[0063] Preferably, a liquid guiding component 500 is provided at the connection of the two baffles 405e. In this embodiment, the liquid guiding component 500 includes a main channel 501 disposed in the first pipe 402, a plurality of first circulation units 502 and second circulation units 503 communicating with the main channel 501, and a groove 504 formed on the first circulation units 502 and second circulation units 503. The main channel 501 is used to connect the plurality of overflow channels.

[0064] Preferably, a stop block is provided between the main channel 501 and the first pipe 402, with the stop block only exposing the opening of the main channel 501.

[0065] Furthermore, both ends of the first circulating monomer 502 and the second circulating monomer 503 are connected to the main channel 501. When the mixture formed by the dry powder and water flows, part of the mixture flows forward through the main channel 501, while the other part enters the first circulating monomer 502 and the second circulating monomer 503, and then flows out from the first circulating monomer 502 and the second circulating monomer 503 and enters the main channel 501.

[0066] Furthermore, a baffle plate is slidably connected within the chute 504. The length of the baffle plate is shorter than the length of the chute 504. The baffle plates are respectively installed in the chute 504 located in the first circulating unit 502 and the chute 504 located in the second circulating unit 503, and are divided into a first baffle plate 505 and a second baffle plate 506. The first baffle plate 505 and the second baffle plate 506 play the role of adjusting the flow diameter of the main channel 501.

[0067] When several first baffles 505 and second baffles 506 are in a close proximity, the flow diameter of the main channel 501 will be reduced. At this time, more of the mixture will enter the first circulating monomer 502 and the second circulating monomer 503, thereby slowing down the flow speed of the mixture and increasing the mixing time of the dry powder and water.

[0068] Furthermore, several first circulating monomers 502 and second circulating monomers 503 are respectively disposed on both sides of the main flow channel 501 and are inclined. The first circulating monomers 502 and second circulating monomers 503 are symmetrically disposed. When viewed from directly above the first circulating monomers 502 and second circulating monomers 503, the angle formed between the length direction of the first circulating monomer 502 and the horizontal direction is 40°-46°, preferably 45° in this embodiment. This ensures that the mixture can flow into the first circulating monomers 502 and second circulating monomers 503. The inclination direction of the first baffle plate 505 and the second baffle plate 506 is consistent with the inclination direction of the first circulating monomers 502 and second circulating monomers 503, respectively.

[0069] Furthermore, a first sliding plate 507 is connected to one end of the first circulating unit 502 extending downward from the first barrier plate 505, and a second sliding plate 508 is connected to one end of the second circulating unit 503 extending downward from the second barrier plate 506. A first sliding rod 509a and a second sliding rod 509b are respectively provided on the upper ends of the first sliding plate 507 and the second sliding plate 508. A slot 509d is provided on both the first sliding rod 509a and the second sliding rod 509b. The slot 509d is L-shaped. A pull rod 509c is hinged to the main baffle 405e-1. A locking rod extends from the pull rod 509c and cooperates with the slot 509d, and slides within the slot 509d. Thus, when the baffle 405e moves, the pull rod 509c drives the first sliding rod 509a and the second sliding rod 509b to move closer to each other or further away from each other.

[0070] Operation process: The operator starts the system through the main control module 102 in the skid-mounted component 101, presets the key parameters for fracturing fluid mixing, and the system enters the standby state. The dry powder conveying component 104, liquid mixing component 105, circulating water component 300, feedback control component 200, etc. are all in the initial standby state, and the lock control module 203 does not trigger the safety limit.

[0071] The dry powder is transported through the dry powder conveying pipeline 104b inside the dry powder storage box 104a. The conveying roller 104d drives the conveying auger 104e to rotate, pushing the dry powder along the pipeline to the outlet plate. The dry powder enters the dry powder drying unit 104c, where the dehumidifier dehumidifies the air and the air conveyor injects dry air to disperse and atomize the aggregated dry powder, suspending it in the drying box for easy and uniform subsequent conveying.

[0072] The atomized dry powder enters the dry powder conveyor. The dry powder filter in the dry powder nozzle 400 removes air through the air extraction pipe, leaving only the dry powder. Then, the water in the mixing tank 105a is conveyed to the first pipe 402 through the conveying pipe 105b and then sent out through the first pipe 402. When it is sent out, it will pass through the water plate 404, while the dry powder is sent out from the second pipe 403. After the dry powder and water are mixed, they enter the mixing tank 103a.

[0073] The mixing temperature sensing module 201 monitors the temperature inside the mixing tank 103a in real time and converts the temperature signal into an electrical signal, which is then transmitted to the mixing feedback module 202.

[0074] After receiving the temperature signal, the mixing feedback module 202 converts it into an actual temperature value and compares and analyzes it with a preset threshold.

[0075] Normal state (temperature between T1 and T2): If the mixing process is normal, the mixing module 103 is given a command to "maintain the current material addition rate and stirring intensity". The conveying control module 203a controls the auger speed and the liquid mixing component 105 maintains the current operating parameters to ensure stable mixing.

[0076] Low temperature (below T1): If the heat source is insufficient, the mixing module 103 is instructed to increase the power of the heating device; if the heat source has reached 80% of the rated power but the temperature is still dropping (determined to be a material ratio problem), the material addition ratio is instructed to be adjusted.

[0077] Temperature too high (above T2): If it is due to excessive heat input, the instruction is to reduce the heat supply; if it is due to violent material reaction, the instruction is to reduce the material addition rate or adjust the ratio.

[0078] Supercritical state (below T) min or higher than T max Immediately send a locking command to the locking module 203, and record the current temperature and mixing parameters to provide a basis for troubleshooting.

[0079] After receiving the supercritical command, the locking module 203 triggers the safety redundancy mechanism: the conveying control module 203a stops the auger, the liquid conveying control module 203b shuts down the water volume control component, and the mixing module 103 shuts down in an emergency to prevent the risk of parameter loss of control.

[0080] Multi-source data collaborative adjustment: The mixing feedback module 202 simultaneously receives pressure and flow data from the circulating water component 300 and pipeline pressure data from the pipeline pressure monitoring module. Through fitting analysis by the early warning module, if pressure abnormalities or flow fluctuations occur, the material addition rate or stirring intensity is adjusted synchronously to ensure system stability.

[0081] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0082] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0083] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder, characterized in that: include: The adjustment component (100) includes a skid-mounted component (101), a main control module (102) disposed within the skid-mounted component (101), and a mixing module (103) disposed on the main control module (102); The mixing module (103) includes a mixing tank (103a) disposed on a skid-mounted assembly (101), a dry powder conveying component (104) disposed on the mixing tank (103a), a liquid mixing component (105) disposed on the mixing tank (103a), and an output pipe (106) disposed on the mixing tank (103a); The feedback control component (200) includes a mixing temperature sensing module (201) disposed on the mixing tank (103a), a mixing feedback module (202) disposed on the mixing tank (103a), and a locking module (203) disposed on the mixing tank (103a). The feedback control component (200) provides feedback adjustment to the mixing module (103). A circulating water assembly (300) is connected to a mixing tank (103a).

2. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 1, characterized in that: The circulating water assembly (300) includes a circulating water pipeline (301) connected to the mixing tank (103a), a cooling module (302) connected to the circulating water pipeline (301), a pressure sensing module (303) installed on the circulating water pipeline (301), a temperature sensing module (304) installed on the circulating water pipeline (301), and an electromagnetic flow meter (305) installed on the circulating water pipeline (301).

3. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 1, characterized in that: The locking module (203) includes a conveying control module (203a) disposed on the dry powder conveying component (104) and a liquid conveying control module (203b) disposed on the liquid mixing component (105). The liquid mixing component (105) includes a mixing water tank (105a) disposed in the skid-mounted assembly (101), a conveying pipe (105b) disposed between the mixing tank (103a) and the mixing water tank (105a), and a water volume control component disposed at the end of the conveying pipe (105b). The liquid conveying control module (203b) is connected to the water volume control component.

4. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 1, characterized in that: The mixing feedback module (202) includes an early warning module and a pipeline pressure monitoring module. The early warning module is used to compare the data from the pipeline pressure monitoring module, the electromagnetic flowmeter (305), and the temperature sensing module (304) and fit the data. The pipeline pressure monitoring module is used to monitor the pressure in each pipeline in the system. The early warning module is equipped with an alarm module.

5. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 1, characterized in that: The dry powder conveying component (104) includes a dry powder storage box (104a) disposed in the skid-mounted assembly (101), a dry powder conveying pipeline (104b) connected to the dry powder storage box (104a), a dry powder drying component (104c) disposed in the dry powder conveying pipeline (104b), and a dry powder spraying head (400) disposed at the end of the dry powder conveying pipeline (104b). A transport roller (104d) is disposed in the dry powder conveying pipeline (104b), and a transport auger (104e) is disposed on the transport roller (104d).

6. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 3, characterized in that: The conveying pipe (105b) is connected to the dry powder spray head (400). The dry powder spray head (400) includes a main pipe (401), a first pipe (402) and a second pipe (403) disposed on the main pipe (401). The second pipe (403) is connected to the dry powder conveying pipe (104b). The first pipe (402) is connected to the conveying pipe (105b). The front end of the first pipe (402) is sleeved on the front end of the second pipe (403). The first pipe (402) is connected to the main pipe (401). A water-passing plate (404) is provided on the second pipe (403). The water-passing plate (404) is connected to the inner wall of the first pipe (402). A plurality of water-passing holes are opened on the water-passing plate (404). A control element (405) is provided at the end of the second pipe (403) extending towards the main pipe (401).

7. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 6, characterized in that: The control component (405) includes a sliding guide rail (405a) disposed on the end of the second pipe (403), a drive rod (405b) slidably connected to the sliding guide rail (405a), a plurality of first drive rods (405c) and second drive rods (405d) rotatably connected to the sliding guide rail (405a), and a baffle (405e) hinged to the ends of the first drive rods (405c) and the second drive rods (405d). A guide rod (405f) is disposed on the drive rod (405b), and the second drive rod (405d) is longer than the first drive rod (405c).

8. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 7, characterized in that: The baffle (405e) includes a plate housing (405e-2), a cavity (405e-3) opened in the plate housing (405e-2), a plurality of perforated plates (405e-4) disposed in the cavity (405e-3), and a cover plate (405e-4) disposed on the plate housing (405e-2). The cover plate (405e-4) is slid out to expose the perforated plates (405e-4).

9. The modular skid-mounted intelligent feedback control system for online mixing of fracturing fluid dry powder as described in claim 7, characterized in that: A liquid guiding component (500) is provided at the connection between the two baffles (405e).

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