Quantitative filling equipment for discharge aiding agent for fracturing and using method

Abstract

The invention discloses quantitative filling equipment for a discharge aiding agent for fracturing and a using method, and relates to the technical field of quantitative filling equipment, the quantitative filling equipment comprises a filling cylinder and a cylinder cover fixedly connected to the filling cylinder, and a discharge plate is movably mounted below the cylinder cover. According to the quantitative filling equipment for the discharge aiding agent for fracturing and the using method, the discharge aiding agent is heated, the phenomenon that the discharge aiding agent is sticky at a low temperature is avoided, and the rotary table, the stirring plate and the rotary pipe rotate in the discharge aiding agent, so that all components in the discharge aiding agent are evenly mixed, layering in the discharge aiding agent is avoided, and the influence on quantitative filling is avoided; meanwhile, the stirring plate can move downwards, when the discharging plate makes contact with the rotary table, the stirring plate can be stored downwards, it is avoided that discharging of the discharge aiding agent at the bottom is affected, when the discharging plate moves downwards, the air exhaust assembly synchronously sucks air above the discharging plate, and therefore the pressure intensity is reduced, air between the discharging plate and the discharge aiding agent is conveniently exhausted, and the discharging efficiency is improved. And quantitative filling of the quantitative filling equipment is more accurate.

Description

Technical Field

[0001] This invention relates to the field of quantitative injection equipment technology, and in particular to a quantitative injection equipment and method for using fracturing aid. Background Technology

[0002] Fracturing aids are a class of functional chemical agents with a wide range of applications. In oil and gas extraction, they can improve fracturing fluid flowback efficiency, reduce reservoir damage, and restore well productivity. Their core function is to optimize the operating efficiency of the target system by improving fluid flowability or promoting material removal. Fracturing aids are usually injected using metered injection equipment. However, in actual use, inaccurate metering of fracturing aids can easily occur. The main reasons are as follows: 1. The viscosity of discharge aids (especially oil-based or formulations containing suspension components) fluctuates significantly with temperature changes (e.g., viscous at low temperatures and thinner at high temperatures). However, most equipment relies on "volume flow rate" (e.g., turbine flow meters) for metering, without considering density changes. For example, the agent is viscous at low temperatures, and the actual mass flow rate (amount of active ingredient) may be lower than the set value, resulting in insufficient dosing. 2. If the discharge aid is a compound system (such as containing suspended particles, emulsions or stratified components), not stirring will cause the components to naturally separate: the denser components (such as solid additives) will sink, and the less dense components (such as light solvents) will float, which will affect the filling. 3. If there is a large amount of gas above the discharge aid, the mixing of this gas will cause "false liquid level" (the discharge chamber is not full but it shows "full"), or the gas will replace part of the liquid volume during discharge, making the actual amount added less than the set value. Therefore, in order to provide a more accurate quantitative injection device, this application proposes a quantitative injection device and a method for using fracturing flow aid. Summary of the Invention

[0003] The main objective of this invention is to provide a quantitative injection device and method for fracturing pumping aid, which can effectively solve the problems of inaccurate quantitative injection caused by the lack of heating and stirring in the quantitative injection device and the mixing of a large amount of gas into the pumping aid.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A quantitative injection device for fracturing aid includes an injection cylinder and a cylinder cover fixedly connected thereto. A discharge plate is movably installed below the cylinder cover, and an exhaust port is provided at the center of the injection cylinder. An air extraction assembly is movably installed on the cylinder cover. The air extraction assembly includes an air cylinder, a piston head, and an elastic pull rope. The air cylinder is fixedly connected to the cylinder cover. The piston head is movably installed inside the air cylinder. One end of the elastic pull rope is fixedly connected to the piston head, and the other end of the elastic pull rope is fixedly connected to the discharge plate. A heating assembly is fixedly connected to the lower part of the filling cylinder, and the heating assembly includes a heating chamber; A stirring assembly is movably installed at the bottom of the filling cylinder. The stirring assembly includes a swirl tube, a turntable, and a stirring plate. The turntable is located at the bottom of the filling cylinder, and a retractable stirring plate is movably installed on the turntable. The swirl tube is fixedly connected to the center of the turntable, and the lower part of the swirl tube is in communication with the heating chamber.

[0005] By adopting the above technical solution, the dispensing aid in the dispensing cylinder is heated to avoid the dispensing aid becoming viscous at low temperatures, which could lead to insufficient dispensing. Stir the excretion aid to prevent it from separating into layers and affecting the quantitative dosing. The air extraction component facilitates the extraction of gas between the discharge plate and the discharge aid, ensuring accuracy in the quantitative discharge of the discharge aid.

[0006] Preferably, a scale bar is provided on the side of the filling cylinder, and a discharge pipe is fixedly connected to the lower end of the filling cylinder. The discharge pipe passes through the heating chamber, and a valve is movably installed on the discharge pipe, with the valve located below the heating chamber.

[0007] By adopting the above technical solution, the scale bar can quantitatively display the liquid in the filling cylinder.

[0008] Preferably, a hydraulic cylinder is fixedly connected to the cylinder cover, a sealing gasket is fixedly connected to the inner side of the cylinder cover, the output shaft of the hydraulic cylinder passes through the sealing gasket and is fixedly connected to the discharge plate, the discharge plate is movably installed inside the filling cylinder, a sealing ring is fixedly connected inside the exhaust port, a sealing ring is fixedly connected to the outer side of the discharge plate, the discharge plate is slidably connected to the inner wall of the filling cylinder through the sealing ring, and an air guide groove is provided on the bottom surface of the discharge plate, the air guide groove and the exhaust port are interconnected.

[0009] By adopting the above technical solution, the gas guide groove facilitates the guidance of the gas between the discharge aid and the discharge plate towards the exhaust port.

[0010] Preferably, the heating assembly includes a heating plate, a heating port, an electric heating wire, a movable hole, and an exhaust valve. The heating plate is fixedly connected inside the heating chamber. The heating port and the movable hole are opened on the heating plate. The movable hole is located at the center of the heating plate, and the heating port is located on both sides of the movable hole. The electric heating wire is fixedly connected inside the heating port, and the exhaust valve is fixedly connected to the upper part of the heating chamber.

[0011] By adopting the above technical solution, the electric heating wire heats the gas in the heating chamber, and the heated gas heats the injection cylinder, thereby heating the compounding agent in the injection cylinder.

[0012] Preferably, the air extraction assembly further includes an upper bracket and a second spring. The lower end of the air cylinder is connected to the inner side of the cylinder cover, and a through hole is provided on the sealing gasket corresponding to the lower end of the air cylinder. The air cylinder draws gas from the position above the discharge plate. The second spring is movably installed inside the filling cylinder and is located between the piston head and the upper bracket. The elastic pull rope passes through the second spring.

[0013] By adopting the above technical solution, the second spring facilitates the piston head reset.

[0014] Preferably, the air extraction assembly further includes a side support, a pulley, a rotating rod, a bearing, a movable port, and a sealing ring. The upper part of the side support is fixedly connected to the air cylinder, and the lower end of the side support is fixedly connected to the cylinder cover. The rotating rod is rotatably connected to the side support through the bearing. The pulley is fixedly connected to the rotating rod. The elastic pull rope is movably installed on the pulley. The movable port is fixedly connected to the cylinder cover. The sealing ring is fixedly connected inside the movable port. One end of the elastic pull rope passes through the sealing ring and is fixedly connected to the discharge plate.

[0015] By adopting the above technical solution, the direction of the elastic rope is changed by the pulley, which makes it easier for the elastic rope to pass through the drum cover and be fixedly connected to the discharge plate.

[0016] Preferably, the stirring assembly further includes a receiving groove and a spring three. The receiving groove is formed on the turntable, the stirring plate is movably installed in the receiving groove, and the spring three is movably installed in the receiving groove and located below the stirring plate.

[0017] By adopting the above technical solution, the spring pushes the stirring plate upward, which facilitates the stirring of the bottom position of the discharge aid.

[0018] Preferably, the stirring assembly further includes a second bearing, an air guide hole, and a driven wheel. The vortex tube is rotatably connected to the filling cylinder and the heating chamber respectively through the second bearing. The air guide hole is opened on the vortex tube and is located inside the heating chamber. The driven wheel is fixedly connected to the lower end of the vortex tube and is located at the lower end of the vortex tube.

[0019] By adopting the above technical solution, the air guide hole enables the vortex tube to communicate with the heating chamber.

[0020] Preferably, the stirring assembly further includes a stepper motor, a drive wheel, a transmission belt, and a motor frame. The motor frame is fixedly connected to the side of the heating chamber, the stepper motor is fixedly connected to the motor frame, the drive wheel is fixedly connected to the output shaft of the stepper motor, and the transmission belt is movably mounted on the drive wheel and the driven wheel.

[0021] By adopting the above technical solution, the stepper motor can easily drive the rotary tube to rotate.

[0022] A method for using a quantitative injection device for fracturing aid includes the following steps: Step 1: Add the discharge aid into the filling cylinder, then thread the cylinder cap onto the filling cylinder. The discharge plate below the cylinder cap is movably installed inside the filling cylinder. Step 2: The electric heating wire in the heating port is energized and heated, which raises the temperature inside the heating chamber. The heated airflow inside the heating chamber heats the expelling aid in the injection cylinder. The airflow in the heating chamber enters the swirl tube through the air guide hole, which raises the temperature of the swirl tube. The swirl tube is located in the center of the expelling aid, which facilitates the heating of the expelling aid. Step 3: The stepper motor starts, the driving wheel rotates and drives the driven wheel, the rotating tube and the turntable through the transmission belt, so that the stirring plate on the turntable rotates synchronously, thereby stirring the lower part of the discharge aid. Step 4: The output shaft of the hydraulic cylinder pushes the discharge plate downward. When the discharge plate moves downward, the elastic rope slides on the pulley. The elastic rope drives the piston head to slide upward in the filling cylinder, so that the filling cylinder extracts the gas above the discharge plate, making the gas pressure above the discharge plate lower than the gas pressure below the discharge plate. This makes it easier for the gas between the discharge plate and the discharge aid to be discharged upward through the exhaust port, thereby reducing the gas above the discharge aid. The upper diameter of the spiral tube gradually decreases, resembling a cone, which makes it easy for the spiral tube to be inserted into the sealing ring two. The upper end of the conical spiral tube does not seal with the sealing ring two, which makes it easy for the gas above the discharge aid to be discharged into the exhaust port and enter the upper position of the discharge plate. The discharge plate stays at the upper end of the spiral tube for a period of time to facilitate the discharge of as much gas as possible below the discharge plate. Step 5: Then the discharge plate continues to move down on the spiral tube, the exhaust port moves to the position below the conical head, the sealing ring 2 seals the spiral tube, the discharge plate pushes the discharge aid through the discharge pipe and discharges it, and quantitative injection is achieved through the scale strip; Step 6: When the discharge plate moves down to the bottom position and contacts the mixing plate on the turntable, press the mixing plate into the collection groove to avoid the mixing plate affecting the discharge of the discharge aid at the bottom position.

[0023] Compared with the prior art, the present invention has the following beneficial effects: 1. When using this invention, the heating component and electric heating wire heat the gas in the heating chamber, so that the heated gas heats the lower part of the filling cylinder, which in turn heats the discharge aid in the filling cylinder. After the swivel tube is heated, the rotating swivel tube heats the discharge aid, making the heating effect of the discharge aid better and avoiding the discharge aid from becoming viscous at low temperatures, which would affect the quantitative filling.

[0024] 2. When using this invention, the turntable, stirring plate, and rotary tube rotate in the discharge aid, thereby uniformly mixing the various components in the discharge aid and avoiding stratification in the discharge aid, which would affect the quantitative dispensing. At the same time, the stirring plate can move downwards, so that when the discharge plate comes into contact with the turntable, the stirring plate can be retracted downwards to avoid affecting the discharge of the discharge aid at the bottom.

[0025] 3. When using this invention, the discharge aid is located below the conical head on the rotary tube. The discharge plate is pushed to the position of the conical head by the hydraulic cylinder. Some gas is extracted from the position above the discharge plate. After reducing the pressure, the gas between the discharge plate and the discharge aid can easily move to the position above the discharge plate through the exhaust port, thereby reducing the gas between the discharge plate and the discharge aid, avoiding affecting the quantitative dispensing, and making the dispensing of the discharge aid more accurate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of the entire invention from another angle; Figure 3 This is a cross-sectional schematic diagram of the cap of the present invention; Figure 4 This is a cross-sectional schematic diagram of the air cylinder of the present invention; Figure 5 This is a schematic diagram of the air guide groove of the present invention; Figure 6 This is a cross-sectional schematic diagram of the filling cylinder and the gas filling chamber of the present invention. Figure 7 This is a schematic diagram of the structure of the turntable of the present invention; Figure 8 This is a schematic diagram of the heating plate of the present invention.

[0027] In the diagram: 1. Filling cylinder; 101. Scale strip; 102. Discharge pipe; 103. Valve; 2. Cylinder cover; 201. Sealing gasket one; 3. Heating assembly; 301. Heating chamber; 302. Heating plate; 3021. Heating port; 3022. Electric heating wire; 3023. Movable hole; 303. Exhaust valve; 4. Hydraulic cylinder; 5. Discharge plate; 501. Sealing ring one; 502. Exhaust port; 503. Sealing ring two; 504. Air guide groove; 6. Air extraction assembly; 601. Air cylinder; 602. Side support; 603. Upper support; 604. Piston head; 605. Spring II; 606. Elastic pull rope; 607. Pulley; 608. Rotating rod; 609. Bearing I; 610. Movable port; 611. Sealing ring III; 7. Stirring assembly; 701. Rotary tube; 702. Turntable; 703. Storage trough; 704. Stirring plate; 705. Spring III; 706. Bearing II; 707. Air guide hole; 708. Driven wheel; 709. Stepper motor; 710. Drive wheel; 711. Transmission belt; 712. Motor frame. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figures 1 to 8 As shown, a quantitative injection device for fracturing aid includes an injection cylinder 1 and a cylinder cover 2 fixedly connected thereto. The injection cylinder 1 and the cylinder cover 2 are fixedly connected by threads. A discharge plate 5 is movably installed below the cylinder cover 2. An exhaust port 502 is opened at the center of the injection cylinder 1. The position of the exhaust port 502 corresponds to the position of the swirl tube 701, and the exhaust port 502 facilitates the conduction of gas above and below the discharge plate 5. An air extraction assembly 6 is movably installed on the cylinder cover 2. The air extraction assembly 6 includes an air cylinder 601, a piston head 604, and an elastic pull rope 606. The air cylinder 601 is fixedly connected to the cylinder cover 2. The air cylinder 601 draws gas from the position above the discharge plate 5 inside the filling cylinder 1. The piston head 604 is movably installed inside the air cylinder 601. The piston head 604 moves up and down inside the air cylinder 601 to achieve air extraction or exhaust. One end of the elastic pull rope 606 is fixedly connected to the piston head 604, and the other end of the elastic pull rope 606 is fixedly connected to the discharge plate 5. The elastic pull rope 606 links the discharge plate 5 and the piston head 604, so that when the discharge plate 5 moves downward, the piston head 604 can easily move upward. A scale bar 101 is provided on the side of the filling cylinder 1. The scale bar 101 provides quantitative filling of the filling cylinder 1. A discharge pipe 102 is fixedly connected to the lower end of the filling cylinder 1. The discharge pipe 102 passes through the heating chamber 301. A valve 103 is movably installed on the discharge pipe 102 and is located below the heating chamber 301. The valve 103 on the discharge pipe 102 is used to control the opening and closing of the discharge pipe 102.

[0030] A hydraulic cylinder 4 is fixedly connected to the cylinder cover 2. A sealing gasket 201 is fixedly connected to the inside of the cylinder cover 2, sealing the cylinder cover 2 and the filling cylinder 1. The output shaft of the hydraulic cylinder 4 passes through the sealing gasket 201 and is fixedly connected to the discharge plate 5. The output shaft of the hydraulic cylinder 4 and the sealing gasket 201 slide and seal. The discharge plate 5 is movably installed inside the filling cylinder 1, dividing the filling cylinder 1 after sealing with the cylinder cover 2 into two spaces. A sealing ring 2 is fixedly connected inside the exhaust port 502. 503, a sealing ring 501 is fixedly connected to the outer side of the discharge plate 5. The discharge plate 5 is slidably connected to the inner wall of the filling cylinder 1 through the sealing ring 501. The sealing ring 503 fills the space between the spiral tube 701 and the exhaust port 502, sealing the space and preventing the discharge aid from being squeezed upward from the exhaust port 502. A gas guide groove 504 is provided on the bottom surface of the discharge plate 5. The gas guide groove 504 is interconnected with the exhaust port 502, which facilitates the discharge of gas above the discharge aid into the exhaust port 502.

[0031] The suction assembly 6 also includes an upper bracket 603 and a second spring 605. The lower end of the air cylinder 601 is connected to the inner side of the cylinder cover 2, and a through hole is provided on the sealing gasket 201 corresponding to the lower end of the air cylinder 601. The air cylinder 601 sucks the gas above the discharge plate 5. The second spring 605 is movably installed in the filling cylinder 1 and is located between the piston head 604 and the upper bracket 603. The second spring 605 pushes the piston head 604 downward, so that the piston head 604 is located at the lower part of the filling cylinder 1. The elastic pull rope 606 passes through the second spring 605.

[0032] The air extraction assembly 6 also includes a side bracket 602, a pulley 607, a rotating rod 608, a bearing 609, a movable port 610, and a sealing ring 611. The upper part of the side bracket 602 is fixedly connected to the air cylinder 601, and the lower end of the side bracket 602 is fixedly connected to the cylinder cover 2. The air cylinder 601 is fixedly connected through the side bracket 602. The rotating rod 608 is rotatably connected to the side bracket 602 through the bearing 609. The pulley 607 is fixedly connected to the rotating rod 608, so that the pulley 607 rotates on the side bracket 602. The elastic pull rope 606 is movably installed on the pulley 607. The pulley 607 facilitates changing the direction of the elastic pull rope 606. The movable port 610 is fixedly connected to the cylinder cover 2. The sealing ring 611 is fixedly connected inside the movable port 610. One end of the elastic pull rope 606 passes through the sealing ring 611 and is fixedly connected to the discharge plate 5. The sealing ring 611 provides a sliding seal for the elastic pull rope 606.

[0033] A heating assembly 3 is fixedly connected to the lower part of the filling cylinder 1. The heating assembly 3 includes a heating chamber 301, and the filling cylinder 1 is fixedly connected to the lower part of the heating chamber 301. The heating assembly 3 includes a heating plate 302, a heating port 3021, an electric heating wire 3022, a movable hole 3023, and an exhaust valve 303. The heating plate 302 is fixedly connected inside the heating chamber 301. The heating port 3021 and the movable hole 3023 are formed on the heating plate 302. The movable hole 3023 is located at the center of the heating plate 302. The rotating tube 701 passes through the movable hole 3023. The heating port 3021 is located on both sides of the movable hole 3023. The electric heating wire 3022 is fixedly connected inside the heating port 3021. The heating port 3021 and the movable hole 3023 separate the electric heating wire 3022 from the rotating tube 701. The exhaust valve 303 is fixedly connected to the upper part of the heating chamber 301. The exhaust valve 303 is pressure-triggered. After the gas in the heating chamber 301 expands to a certain pressure, some gas is discharged, thereby improving the safety of the heating chamber 301.

[0034] A stirring assembly 7 is movably installed at the bottom of the filling cylinder 1. The stirring assembly 7 includes a swirl tube 701, a turntable 702, and a stirring plate 704. The turntable 702 is located at the bottom of the filling cylinder 1, and a retractable stirring plate 704 is movably installed on the turntable 702. The discharge pipe 102 is connected to the interior of the filling cylinder 1. The inlet of the discharge pipe 102 is located on the outside of the turntable 702 to avoid the rotating turntable 702 affecting the discharge pipe 102. The swirl tube 701 is fixedly connected to the center of the turntable 702. The swirl tube 701 rotates synchronously with the turntable 702. The lower part of the swirl tube 701 is connected to the heating chamber 301.

[0035] The mixing assembly 7 also includes a receiving trough 703 and a spring 705. The receiving trough 703 is located on the turntable 702. The mixing plate 704 is movably installed in the receiving trough 703. The spring 705 is movably installed in the receiving trough 703 and is located below the mixing plate 704. The spring 705 pushes the mixing plate 704 upward, making it easier for the mixing plate 704 to stir the drainage aid from the bottom up, so that the various components of the drainage aid can be mixed evenly.

[0036] The stirring assembly 7 also includes a bearing 706, a vent 707, and a driven wheel 708. The swirl tube 701 is rotatably connected to the filling cylinder 1 and the heating chamber 301 via the bearing 706. The swirl tube 701 passes through the heating chamber 301 and enters the lower part of the heating chamber 301. The vent 707 is opened on the swirl tube 701 and is located inside the heating chamber 301, so that the gas inside the heating chamber 301 can enter the swirl tube 701 through the vent 707, thereby heating the swirl tube 701. The driven wheel 708 is fixedly connected to the lower end of the swirl tube 701 and is located at the lower end of the swirl tube 701.

[0037] The stirring assembly 7 also includes a stepper motor 709, a drive wheel 710, a transmission belt 711, and a motor frame 712. The motor frame 712 is fixedly connected to the side of the heating chamber 301. The stepper motor 709 is fixedly connected to the motor frame 712, so that the stepper motor 709 drives the drive wheel 710 to rotate. The drive wheel 710 is fixedly connected to the output shaft of the stepper motor 709. The transmission belt 711 is movably mounted on the drive wheel 710 and the driven wheel 708, so that the stepper motor 709 can easily drive the driven wheel 708 and the rotating tube 701 to rotate.

[0038] It should be noted that the steps of using the present invention are as follows: the discharge aid is added into the filling cylinder 1, and then the cylinder cover 2 is threaded onto the filling cylinder 1, so that a sealed space is formed between the filling cylinder 1 and the cylinder cover 2. The discharge plate 5 below the cylinder cover 2 is movably installed in the filling cylinder 1. The discharge plate 5 forms two spaces in the filling cylinder 1, namely the upper gas space above the discharge plate 5 and the lower gas space below the discharge plate 5. The electric heating wire 3022 inside the heating port 3021 is energized and heated. The electric heating wire 3022 heats the gas inside the heating chamber 301, causing the temperature inside the heating chamber 301 to rise. The heated airflow inside the heating chamber 301 heats the purging agent in the filling cylinder 1, preventing the purging agent in the filling cylinder 1 from becoming viscous due to low temperature. The airflow in the heating chamber 301 enters the swirl tube 701 through the air guide hole 707, causing the temperature of the swirl tube 701 to rise. The swirl tube 701 is located in the center of the purging agent, which facilitates the heating of the purging agent. The swirl tube 701 extends from the bottom surface of the purging agent to the top surface of the purging agent, which facilitates the heating of the upper liquid of the purging agent. When the stepper motor 709 starts, the output shaft of the stepper motor 709 drives the drive wheel 710 to rotate, and through the transmission belt 711, it rotates the driven wheel 708, the vortex tube 701 and the turntable 702. The stirring plate 704 on the turntable 702 rotates synchronously. The stirring plate 704 stirs the discharge aid in the filling cylinder 1, so that the various components in the discharge aid are easily mixed evenly. When the stirring plate 704 rotates, the vortex tube 701 rotates synchronously, so that the discharge aid is formed in a vortex located on the outside of the vortex tube 701, so that the discharge aid in the filling cylinder 1 has a better mixing and heating effect. The output shaft of hydraulic cylinder 4 pushes the discharge plate 5 downward. When the discharge plate 5 moves downward, one end of the elastic rope 606 moves downward with the discharge plate 5, and the elastic rope 606 slides on the pulley 607. The other end of the elastic rope 606 drives the piston head 604 to slide upward inside the filling cylinder 1, causing the filling cylinder 1 to extract the gas above the discharge plate 5. This makes the gas pressure above the discharge plate 5 lower than the gas pressure below the discharge plate 5, thereby reducing the gas pressure in the upper gas space above the discharge plate 5. The gas pressure in the lower gas space below the discharge plate 5 is stronger than that in the upper gas space, thus reducing the pressure in the upper gas space above the discharge plate 5. The gas between the material plate 5 and the discharge aid can be discharged upward through the exhaust port 502, thereby reducing the gas above the discharge aid. The upper diameter of the spiral tube 701 gradually decreases, resembling a cone, which facilitates the insertion of the spiral tube 701 into the sealing ring 503. The upper end of the conical spiral tube 701 does not seal with the sealing ring 503, which facilitates the gas above the discharge aid to be discharged into the exhaust port 502 and enter the upper position of the discharge plate 5. After the exhaust port 502 is inserted into the conical head above the spiral tube 701, the discharge plate 5 stays at the upper end of the spiral tube 701 for a period of time, which facilitates the discharge of the gas below the discharge plate 5 as much as possible. Then the discharge plate 5 continues to move down on the spiral tube 701, the vent 502 moves to the position below the conical head, and the sealing ring 503 seals the spiral tube 701, thereby preventing the discharge aid from entering the position above the discharge plate 5 through the vent 502. The discharge plate 5 pushes the discharge aid through the discharge pipe 102 and discharges it, and quantitative injection is achieved through the scale strip 101. When the discharge plate 5 moves downward to the bottom position and contacts the stirring plate 704 on the turntable 702, the stirring plate 704 is pressed into the receiving groove 703, so that the stirring plate 704 pushes the spring 705 to compress and collect the stirring plate 704 into the receiving groove 703, thereby preventing the stirring plate 704 from affecting the discharge of the auxiliary discharge agent at the bottom position.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A quantitative injection device for fracturing aid, comprising an injection cylinder (1) and a cylinder cap (2) fixedly connected thereto, characterized in that: A discharge plate (5) is movably installed below the cylinder cover (2), and an exhaust port (502) is provided at the center of the filling cylinder (1). An air extraction assembly (6) is movably installed on the cylinder cover (2). The air extraction assembly (6) includes an air cylinder (601), a piston head (604), and an elastic pull rope (606). The air cylinder (601) is fixedly connected to the cylinder cover (2). The piston head (604) is movably installed inside the air cylinder (601). One end of the elastic pull rope (606) is fixedly connected to the piston head (604), and the other end of the elastic pull rope (606) is fixedly connected to the discharge plate (5). A heating assembly (3) is fixedly connected to the lower part of the filling cylinder (1), and the heating assembly (3) includes a heating chamber (301). A stirring assembly (7) is movably installed at the bottom of the filling cylinder (1). The stirring assembly (7) includes a swirl tube (701), a turntable (702), and a stirring plate (704). The turntable (702) is located at the bottom of the filling cylinder (1), and a retractable stirring plate (704) is movably installed on the turntable (702). The swirl tube (701) is fixedly connected to the center of the turntable (702), and the lower part of the swirl tube (701) is connected to the heating chamber (301).

2. The quantitative injection device for fracturing aid according to claim 1, characterized in that: The filling cylinder (1) has a scale bar (101) on its side. The lower end of the filling cylinder (1) is fixedly connected to a discharge pipe (102). The discharge pipe (102) passes through the heating chamber (301). A valve (103) is movably installed on the discharge pipe (102), and the valve (103) is located below the heating chamber (301).

3. The quantitative injection device for fracturing aid according to claim 1, characterized in that: A hydraulic cylinder (4) is fixedly connected to the cylinder cover (2). A sealing gasket (201) is fixedly connected to the inner side of the cylinder cover (2). The output shaft of the hydraulic cylinder (4) passes through the sealing gasket (201) and is fixedly connected to the discharge plate (5). The discharge plate (5) is movably installed inside the filling cylinder (1). A sealing ring (503) is fixedly connected inside the exhaust port (502). A sealing ring (501) is fixedly connected to the outer side of the discharge plate (5). The discharge plate (5) is slidably connected to the inner wall of the filling cylinder (1) through the sealing ring (501). An air guide groove (504) is opened on the bottom surface of the discharge plate (5). The air guide groove (504) and the exhaust port (502) are interconnected.

4. The quantitative injection device for fracturing aid according to claim 1, characterized in that: The heating assembly (3) includes a heating plate (302), a heating port (3021), an electric heating wire (3022), a movable hole (3023), and an exhaust valve (303). The heating plate (302) is fixedly connected inside the heating chamber (301). The heating port (3021) and the movable hole (3023) are opened on the heating plate (302). The movable hole (3023) is located at the center of the heating plate (302). The heating port (3021) is located on both sides of the movable hole (3023). The electric heating wire (3022) is fixedly connected inside the heating port (3021). The exhaust valve (303) is fixedly connected to the upper part of the heating chamber (301).

5. The quantitative injection device for fracturing aid according to claim 1, characterized in that: The air extraction assembly (6) also includes an upper bracket (603) and a second spring (605). The lower end of the air cylinder (601) is connected to the inner side of the cylinder cover (2), and a through hole is provided on the sealing gasket (201) corresponding to the lower end of the air cylinder (601). The air cylinder (601) draws gas from the upper position of the discharge plate (5). The second spring (605) is movably installed in the filling cylinder (1) and is located between the piston head (604) and the upper bracket (603). The elastic pull rope (606) passes through the second spring (605).

6. The quantitative injection device for fracturing aid according to claim 5, characterized in that: The air extraction assembly (6) also includes a side bracket (602), a pulley (607), a rotating rod (608), a bearing (609), a movable port (610), and a sealing ring (611). The upper part of the side bracket (602) is fixedly connected to the air cylinder (601), and the lower end of the side bracket (602) is fixedly connected to the cylinder cover (2). The rotating rod (608) is rotatably connected to the side bracket (602) through the bearing (609). The pulley (607) is fixedly connected to the rotating rod (608). The elastic pull rope (606) is movably installed on the pulley (607). The movable port (610) is fixedly connected to the cylinder cover (2). The sealing ring (611) is fixedly connected inside the movable port (610). One end of the elastic pull rope (606) passes through the sealing ring (611) and is fixedly connected to the discharge plate (5).

7. The quantitative injection device for fracturing aid according to claim 1, characterized in that: The stirring assembly (7) also includes a receiving groove (703) and a spring three (705). The receiving groove (703) is opened on the turntable (702). The stirring plate (704) is movably installed in the receiving groove (703). The spring three (705) is movably installed in the receiving groove (703) and is located below the stirring plate (704).

8. The quantitative injection device for fracturing aid according to claim 7, characterized in that: The stirring assembly (7) also includes a bearing (706), an air guide hole (707), and a driven wheel (708). The vortex tube (701) is rotatably connected to the filling cylinder (1) and the heating chamber (301) respectively through the bearing (706). The air guide hole (707) is opened on the vortex tube (701) and is located inside the heating chamber (301). The driven wheel (708) is fixedly connected to the lower end of the vortex tube (701) and is located at the lower end of the vortex tube (701).

9. A quantitative injection device for fracturing aid according to claim 8, characterized in that: The stirring assembly (7) also includes a stepper motor (709), a drive wheel (710), a transmission belt (711), and a motor frame (712). The motor frame (712) is fixedly connected to the side of the heating chamber (301). The stepper motor (709) is fixedly connected to the motor frame (712). The drive wheel (710) is fixedly connected to the output shaft of the stepper motor (709). The transmission belt (711) is movably mounted on the drive wheel (710) and the driven wheel (708).

10. A method of using a quantitative injection device for fracturing flow aid, referring to the quantitative injection device for fracturing flow aid as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Add the discharge aid into the filling cylinder (1), and then thread the cylinder cover (2) onto the filling cylinder (1). The discharge plate (5) below the cylinder cover (2) is movably installed inside the filling cylinder (1). Step 2: The electric heating wire (3022) in the heating port (3021) is energized and heated, so that the temperature in the heating chamber (301) rises. The heated airflow in the heating chamber (301) heats the discharge aid in the injection cylinder (1). The airflow in the heating chamber (301) enters the swirl tube (701) through the air guide hole (707), so that the temperature of the swirl tube (701) rises. The swirl tube (701) is located in the center of the discharge aid, which facilitates the heating of the discharge aid. Step 3: The stepper motor (709) starts, the drive wheel (710) rotates and drives the driven wheel (708), the rotating tube (701) and the turntable (702) through the transmission belt (711), so that the stirring plate (704) on the turntable (702) rotates synchronously, thereby stirring the lower part of the discharge aid. Step 4: The output shaft of the hydraulic cylinder (4) pushes the discharge plate (5) downward. When the discharge plate (5) moves downward, the elastic rope (606) slides on the pulley (607). The elastic rope (606) drives the piston head (604) to slide upward in the filling cylinder (1), so that the filling cylinder (1) extracts the gas above the discharge plate (5), so that the gas pressure above the discharge plate (5) is lower than the gas pressure below the discharge plate (5), making it easier for the gas between the discharge plate (5) and the discharge aid to pass through the exhaust. The outlet (502) is discharged upwards, thereby reducing the gas above the discharge aid. The upper diameter of the spiral tube (701) gradually decreases, resembling a cone shape, which facilitates the insertion of the spiral tube (701) into the sealing ring two (503). The upper end of the conical spiral tube (701) does not seal with the sealing ring two (503), which facilitates the gas above the discharge aid to be discharged into the exhaust port (502) and enter the position above the discharge plate (5). The discharge plate (5) stays at the upper end of the spiral tube (701) for a period of time, which facilitates the discharge of as much gas as possible below the discharge plate (5). Step 5: Then the discharge plate (5) continues to move down on the spiral tube (701), the exhaust port (502) moves to the position below the conical head, the sealing ring 2 (503) seals the spiral tube (701), the discharge plate (5) pushes the discharge aid through the discharge pipe (102) and discharges it through the scale strip (101) to achieve quantitative injection; Step 6: When the discharge plate (5) moves down to the bottom position and comes into contact with the stirring plate (704) on the turntable (702), the stirring plate (704) is pressed into the receiving groove (703) to avoid the stirring plate (704) affecting the discharge of the auxiliary discharge agent at the bottom position.

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