Weighing and feeding device for discharge aiding agent for fracturing

Abstract

The utility model relates to the technical field of weighing and feeding, in particular to a cleanup additive weighing and feeding device for fracturing. The weighing and feeding device for the discharge aiding agent for fracturing comprises a material storage barrel, falling stopping valve sets are installed on the upper barrel face and the lower barrel face of the material storage barrel, and a linkage part used for opening and closing the two falling stopping valve sets is installed on the material storage barrel. According to the weighing and feeding device for the discharge aiding agent for fracturing, the linkage component drives the middle connecting plate and the arc-shaped toothed plate through the air cylinder, opening and closing of the upper and lower anti-falling valve groups of the storage barrel are synchronously controlled, and the problem of material residue or leakage caused by traditional step-by-step operation is solved; the flow stopping piece adopts the combined design of a plugging ball and a spring, dynamic sealing of an arc-shaped communicating containing channel is achieved through elastic pressure, the device adapts to the high-pressure environment and is resistant to abrasion, the weighing frame is integrated with a gravity sensor, the weight of the material storage barrel is monitored in real time, accurate setting of the feeding amount and automatic starting and stopping are achieved in combination with a control panel, and human intervention is reduced.

Description

Technical Field

[0001] This utility model relates to the field of weighing and feeding technology, and in particular to a weighing and feeding device for fracturing aid. Background Technology

[0002] In oil fracturing operations, the precise delivery of flowback aids is crucial for improving fracturing fluid flowback efficiency. Current technologies often employ single-valve control or manual operation for fracturing aid delivery devices, which presents the following problems:

[0003] 1. Insufficient weighing accuracy and reliance on manual monitoring can easily introduce errors, leading to fluctuations in the amount of material fed.

[0004] 2. Asynchronous opening and closing of valve groups can easily lead to excessive or insufficient material.

[0005] 3. The equipment has a low degree of automation, limited operating efficiency, and is difficult to adapt to the needs of continuous operation.

[0006] Therefore, it is necessary to provide a new fracturing aid weighing and feeding device to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a weighing and feeding device for fracturing aid.

[0008] The fracturing aid weighing and feeding device provided by this utility model includes a storage cylinder, and a set of stop valves is installed on both the upper and lower surfaces of the storage cylinder. The material is fed through the stop valve set above the storage cylinder and discharged through the stop valve set below the storage cylinder.

[0009] The anti-drain valve assembly includes a horizontal pipe, on which symmetrically distributed and interconnected quick-connect screw ports and connecting pipes are fixedly installed. The connecting pipes are fixedly installed on the storage cylinder and connected to the storage cylinder. A flow-stopping component for opening and closing the quick-connect screw ports is installed inside the horizontal pipe.

[0010] The storage cylinder is equipped with a linkage component for opening and closing two sets of stop valves. The linkage component includes a central connecting plate, which is rotatably installed in a K-shaped groove in the storage cylinder. Both ends of the central connecting plate are fixedly installed with arc-shaped toothed plates. Pushing parts are connected to both arc-shaped toothed plates. A docking frame is fixedly installed on the storage cylinder, and a rotatably connected cylinder is installed on the docking frame. The output end of the cylinder is hinged to the outer wall of any arc-shaped toothed plate.

[0011] Preferably, the horizontal tube, quick-connect screw, and butt joint form a cross tube structure, and the connection between the horizontal tube, quick-connect screw, and butt joint forms an arc-shaped connecting channel.

[0012] Preferably, the flow stop includes a mounting bracket, which is fixedly installed inside the transverse pipe. A sliding rod with a sliding connection is installed on the mounting bracket. A sealing ball is fixedly installed on the head of the sliding rod, and a spring is sleeved on the sliding rod. One end of the spring is fixedly connected to the spherical surface corresponding to the sealing ball, and the other end of the spring is fixedly connected to the bracket surface near the arc-shaped connecting channel. The sealing ball seals the arc-shaped connecting channel under the action of the spring force.

[0013] Preferably, the pusher includes a mounting post, a toothed plate is fixedly mounted on the lower surface of the mounting post, and the toothed plate is meshed with a corresponding arc-shaped toothed plate. A piston rod is fixedly mounted on the end of the mounting post, and the piston rod is inserted into an insertion cavity provided in the transverse tube and a piston is fixedly mounted thereon. The piston is slidably connected to the insertion cavity.

[0014] Preferably, a sliding support frame is fixedly installed on the storage cylinder, and the support ring on the sliding support frame is sleeved on the piston rod and slidably connected to the piston rod.

[0015] Preferably, the weighing and feeding device further includes a weighing frame, the storage cylinder is installed on the weighing frame, and a gravity sensor for weighing the weight of the storage cylinder is installed on the weighing frame.

[0016] Preferably, a control panel is fixedly installed on the storage cylinder.

[0017] Compared with related technologies, the fracturing aid weighing and feeding device provided by this utility model has the following advantages:

[0018] In this invention, the linkage component drives the central connecting plate and the arc-shaped toothed plate with a cylinder to synchronously control the opening and closing of the upper and lower stop valve groups of the storage cylinder, avoiding the material residue or leakage problems caused by traditional step-by-step operation; while the flow stop component adopts a combination design of sealing ball and spring, which realizes dynamic sealing of arc-shaped connecting channel through elastic pressure, is suitable for high-pressure environment and wear-resistant, and integrates a gravity sensor through the weighing frame to monitor the weight of the storage cylinder in real time, and realizes precise setting of feeding amount and automatic start and stop in combination with the control panel, reducing human intervention. Attached Figure Description

[0019] Figure 1 A schematic diagram of one preferred embodiment of the fracturing aid weighing and feeding device provided by this utility model;

[0020] Figure 2 A second schematic diagram of a preferred embodiment of the fracturing aid weighing and feeding device provided by this utility model;

[0021] Figure 3 for Figure 1 A cross-sectional schematic diagram of the storage cylinder and the anti-fall valve assembly shown.

[0022] Figure 4 for Figure 3A cross-sectional view of the anti-drain valve assembly shown.

[0023] Figure 5 for Figure 3 The diagram shows the structure of the linkage component.

[0024] Figure 6 for Figure 1 A schematic cross-sectional view of the storage cylinder shown.

[0025] Figure 7 for Figure 1 The diagram shows the structure of the weighing frame.

[0026] The diagram labels are as follows: 1. Storage cylinder; 1a. K-type groove; 2. Anti-fall valve assembly; 21. Horizontal pipe; 21a. Insertion cavity; 22. Quick-connect screw; 23. Butt joint pipe; 24. Arc-shaped connecting channel; 25. Flow stopper; 251. Mounting bracket; 252. Sliding rod; 253. Sealing ball; 254. Spring; 3. Linkage component; 31. Central connecting plate; 32. Arc-shaped toothed plate; 33. Push stopper; 331. Mounting column; 332. Toothed plate; 333. Piston rod; 334. Piston; 335. Sliding support frame; 34. Cylinder; 341. Connecting frame; 4. Weighing frame; 41. Gravity sensor; 5. Control panel. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0029] Please see Figures 1 to 7 This utility model provides a fracturing aid weighing and feeding device, which includes a storage cylinder 1, a set of stop valves 2, a linkage component 3, and a weighing frame 4. The storage cylinder 1 is mounted on the weighing frame 4, and a gravity sensor 41 for weighing the storage cylinder 1 is installed on the weighing frame 4. The upper and lower cylinder surfaces of the storage cylinder 1 are both equipped with the set of stop valves 2. The storage cylinder 1 is fed through the set of stop valves 2 above and discharged through the set of stop valves 2 below. The storage cylinder 1 is equipped with a linkage component 3 for opening and closing the two sets of stop valves 2.

[0030] In the embodiments of this utility model, please refer to Figures 1 to 7The anti-drain valve assembly 2 includes a horizontal pipe 21. Symmetrically distributed and interconnected quick-connect screw ports 22 and connecting pipes 23 are fixedly installed on the horizontal pipe 21. The horizontal pipe 21, quick-connect screw ports 22, and connecting pipes 23 form a cross-shaped pipe structure, and the connection points between the horizontal pipe 21 and the quick-connect screw ports 22 and connecting pipes 23 form an arc-shaped connecting channel 24. The connecting pipes 23 are fixedly installed on and connected to the storage cylinder 1. A flow-stopping element 25 for opening and closing the quick-connect screw ports 22 is installed inside the horizontal pipe 21. The flow-stopping element 25 includes a mounting bracket. 251, the mounting bracket 251 is fixedly installed inside the transverse tube 21, and a sliding rod 252 with sliding connection is installed on the mounting bracket 251. A sealing ball 253 is fixedly installed on the head of the sliding rod 252, and a spring 254 is sleeved on the sliding rod 252. One end of the spring is fixedly connected to the spherical surface corresponding to the sealing ball 253, and the other end of the spring 254 is fixedly connected to the bracket surface of the mounting bracket 251 near the arc-shaped connecting channel 24. The sealing ball 253 seals the arc-shaped connecting channel 24 under the action of the elastic force of the spring 254.

[0031] It should be noted that: the delivery pipe of the discharge aid is connected to the quick-connect screw port 22 in the upper stop valve group 2 of the storage cylinder 1, and the quick-connect screw port 22 in the lower stop valve group 2 of the storage cylinder 1 is connected to the feeding pipe.

[0032] In the initial state, the sealing ball 253 seals the arc-shaped connecting channel 24 under the action of the spring 254, so that both the upper and lower sets of stop valve groups 2 of the storage cylinder 1 are in a closed state.

[0033] When the storage cylinder 1 needs to be fed, the pusher 33 above the linkage component 3 pushes the sealing ball 253 to slide towards the mounting bracket 251 and compresses the spring 254. As a result, the sealing ball 253 no longer seals the arc-shaped connecting channel 24. Therefore, the conveying pipeline discharges the discharge aid into the storage cylinder 1 through the upper stop valve assembly 2. At this time, the lower stop valve assembly 2 uses the pusher 33 below the linkage component 3 to remove the pushing force on the sealing ball 253. Therefore, the sealing ball 253 resets under the action of the spring 254 and seals the arc-shaped connecting channel 24. Thus, the discharge aid can be stored in the storage cylinder 1.

[0034] When the gravity sensor 41 detects that the discharge aid in the storage cylinder 1 has reached the set value, the pusher 33 below the linkage component 3 pushes the sealing ball 253 to slide towards the mounting bracket 251, causing the spring 254 to compress. As a result, the sealing ball 253 no longer seals the arc-shaped connecting channel 24. Therefore, the discharge aid in the storage cylinder 1 is fed through the lower stop valve assembly 2. At this time, the upper stop valve assembly 2 uses the pusher 33 above the linkage component 3 to remove the pushing force on the sealing ball 253. Therefore, the sealing ball 253 resets under the action of the spring 254 and seals the arc-shaped connecting channel 24. Thus, the conveying pipeline stops conveying the discharge aid into the storage cylinder 1.

[0035] In order to facilitate the installation of the flow stop 25 in the transverse tube 21, an opening is provided at the tail of the transverse tube 21. After the flow stop 25 is installed into the transverse tube 21 through the opening at the tail of the transverse tube 21, a sealing end cap can be welded to the opening at the tail of the transverse tube 21.

[0036] In the embodiments of this utility model, please refer to Figures 1 to 7 The linkage component 3 includes a central connecting plate 31, which is rotatably installed in the K-shaped groove 1a of the storage cylinder 1. Both ends of the central connecting plate 31 are fixedly installed with arc-shaped toothed plates 32. Pushing members 33 are connected to both arc-shaped toothed plates 32. The pushing member 33 includes a mounting column 331. The lower column surface of the mounting column 331 is fixedly installed with toothed plates 332, and the toothed plates 332 are meshed with the corresponding arc-shaped toothed plates 32. A piston rod 333 is fixedly installed at the end of the mounting column 331. The piston rod 333 is inserted into the insertion cavity 21a in the transverse tube 21 and a piston 334 is fixedly installed thereon. The piston 334 is slidably connected to the insertion cavity 21a.

[0037] A docking frame 341 is fixedly installed on the storage cylinder 1, and a cylinder 34 is rotatably connected on the docking frame 341. The output end of the cylinder 34 is hinged to the outer wall of any arc-shaped toothed plate 32.

[0038] It should be noted that: when the cylinder 34 returns (in this embodiment, the connection between the cylinder 34 and the lower arc-shaped toothed plate 32 is taken as an example), the lower arc-shaped toothed plate 32 rotates around the rotation center of the connecting plate 31 in a direction away from the axis of the storage cylinder 1, while the upper arc-shaped toothed plate 32 rotates around the rotation center of the connecting plate 31 in a direction towards the axis of the storage cylinder 1. Since the arc-shaped toothed plate 32 is engaged with the corresponding mounting post 331, the lower mounting post 331 drives the piston rod 333 to slide outward along the insertion cavity 21a, so that the piston 334 on the piston rod 333 does not abut against the sealing ball 253, thus sealing... Under the action of spring 254, the lower sealing ball 253 seals the arc-shaped connecting channel 24, while the upper mounting column 331 drives the piston rod 333 to slide along the insertion cavity 21a, so that the piston 334 on the piston rod 333 abuts against the sealing ball 253 until the sealing ball 253 slides towards the mounting bracket 251 and the seal on the arc-shaped connecting channel 24 fails. Therefore, the stop valve group 2 above the storage cylinder 1 is in the open state, allowing the drainage aid to enter the storage cylinder 1, while the stop valve group 2 below the storage cylinder 1 is closed, so the drainage aid can be stored in the storage cylinder 1.

[0039] Furthermore, a sliding support frame 335 is fixedly installed on the storage cylinder 1, and the support ring on the sliding support frame 335 is sleeved on the piston rod 333 and slidably connected to the piston rod 333, thereby improving the stability of the piston rod 333 when sliding along the insertion cavity 21a.

[0040] Furthermore, a control panel 5 is fixedly installed on the storage cylinder 1, and the control panel 5 is electrically connected to the gravity sensor 41 and the cylinder 34 via wires, and a display screen for displaying weight is provided on the control panel 5.

[0041] In this application, the linkage component 3 drives the central connecting plate 31 and the arc-shaped toothed plate 32 through the cylinder 34, and synchronously controls the opening and closing of the upper and lower stop valve groups 2 of the storage cylinder 1, avoiding the material residue or leakage problems caused by traditional step-by-step operation; while the flow stop component 25 adopts a combination design of sealing ball 253 and spring 254, and achieves dynamic sealing of arc-shaped connecting channel 24 through elastic pressure, which is suitable for high-pressure environment and wear-resistant. The weight of the storage cylinder 1 is monitored in real time by integrating gravity sensor 41 through the weighing frame 4, and the precise setting of feeding amount and automatic start and stop are realized by the control panel 5, reducing human intervention.

[0042] It is worth noting that in order to reduce the problem of decreased transmission accuracy due to wear caused by long-term meshing of the arc-shaped toothed plate 32 and toothed plate 332 of the linkage component 3, the arc-shaped toothed plate 32 and toothed plate 332 are made of alloy steel with surface nitriding treatment, or a lubrication groove is added to inject wear-resistant grease regularly. In order to reduce the problem of elastic decay of spring 254 after long-term compression, spring 254 is made of fatigue-resistant disc spring, and shock-absorbing pads are added to the bottom of the weighing frame 4, thereby reducing the interference of environmental vibration on the gravity sensor 41 and causing weighing errors.

[0043] In order to prevent the arc-shaped toothed plate 32 and toothed plate 332 in the linkage component 3 from being contaminated by dust, a protective cover (not shown in the figure) is installed on the storage cylinder 1 to protect the linkage component 3.

[0044] The working principle of the fracturing aid weighing and feeding device provided by this utility model is as follows:

[0045] Connect the delivery pipe of the discharge aid to the quick-connect screw port 22 in the upper stop valve group 2 of the storage cylinder 1, and connect the quick-connect screw port 22 in the lower stop valve group 2 of the storage cylinder 1 to the feeding pipe.

[0046] In the initial state, the sealing ball 253 seals the arc-shaped connecting channel 24 under the action of the spring 254, so that both the upper and lower sets of stop valve groups 2 of the storage cylinder 1 are in a closed state.

[0047] When the storage cylinder 1 needs to be fed, the cylinder 34 is activated for return (this embodiment uses the connection between the cylinder 34 and the lower arc-shaped toothed plate 32 as an example). The lower arc-shaped toothed plate 32 rotates around the rotation center of the connecting plate 31 in a direction away from the axis of the storage cylinder 1, while the upper arc-shaped toothed plate 32 rotates around the rotation center of the connecting plate 31 towards the axis of the storage cylinder 1. Since the arc-shaped toothed plate 32 is engaged with the corresponding mounting post 331, the lower mounting post 331 drives the piston rod 333 to slide outward along the insertion cavity 21a, causing the piston 334 on the piston rod 333 to not abut against the sealing ball 253. Under the action of spring 254, the lower sealing ball 253 seals the arc-shaped connecting channel 24, while the upper mounting column 331 drives the piston rod 333 to slide along the insertion cavity 21a, so that the piston 334 on the piston rod 333 abuts against the sealing ball 253 until the sealing ball 253 slides towards the mounting bracket 251, causing the seal of the arc-shaped connecting channel 24 to fail. Therefore, the stop valve group 2 above the storage cylinder 1 is in the open state, allowing the drainage aid to enter the storage cylinder 1, while the stop valve group 2 below the storage cylinder 1 is closed, so the drainage aid can be stored in the storage cylinder 1.

[0048] When the gravity sensor 41 detects that the discharge aid in the storage cylinder 1 has reached the set value, the cylinder 34 is activated to push the lower arc-shaped toothed plate 32. This causes the lower arc-shaped toothed plate 32 to rotate around the rotation center of the connecting plate 31 towards the axis of the storage cylinder 1, while the upper arc-shaped toothed plate 32 rotates around the rotation center of the connecting plate 31 away from the axis of the storage cylinder 1. Consequently, the upper mounting column 331 drives the piston rod 333 to slide outward along the insertion cavity 21a, preventing the piston 334 on the piston rod 333 from contacting the sealing ball 25. 3. Therefore, under the action of the spring 254, the upper sealing ball 253 seals the arc-shaped connecting channel 24, so that the storage cylinder 1 stops feeding. Meanwhile, the lower mounting column 331 drives the piston rod 333 to slide along the insertion cavity 21a, so that the piston 334 on the piston rod 333 abuts against the sealing ball 253 until the sealing ball 253 slides towards the mounting frame 251, causing the arc-shaped connecting channel 24 to fail to seal. Thus, the discharge aid stored in the storage cylinder 1 is fed after reaching the set weight.

[0049] The circuits and controls involved in the control panel 5, gravity sensor 41, and cylinder 34 in this utility model are all existing mature technologies, and will not be described in detail here.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fracturing aid weighing and feeding device, characterized in that, Includes a storage cylinder (1), on which a stop valve assembly (2) is installed on both the upper and lower cylinder surfaces. Material is fed through the stop valve assembly (2) above the storage cylinder (1) and discharged through the stop valve assembly (2) below the storage cylinder (1). The anti-drain valve assembly (2) includes a horizontal pipe (21), on which symmetrically distributed and interconnected quick-connect screw ports (22) and connecting pipes (23) are fixedly installed. The connecting pipes (23) are fixedly installed on the storage cylinder (1) and connected to the storage cylinder (1). A flow stopper (25) for opening and closing the quick-connect screw ports (22) is installed inside the horizontal pipe (21). The storage cylinder (1) is equipped with a linkage component (3) for opening and closing two sets of stop valve groups (2), and the linkage component (3) includes a central connecting plate (31). The central connecting plate (31) is rotatably installed in the K-shaped groove (1a) opened in the storage cylinder (1), and arc-shaped toothed plates (32) are fixedly installed at both ends of the central connecting plate (31). Pushing parts (33) are connected to both arc-shaped toothed plates (32). A docking frame (341) is fixedly installed on the storage cylinder (1), and a cylinder (34) is rotatably connected on the docking frame (341). The output end of the cylinder (34) is hinged to the outer wall of any arc-shaped toothed plate (32).

2. The fracturing aid weighing and feeding device according to claim 1, characterized in that, The horizontal tube (21), quick-connect screw (22), and connecting pipe (23) form a cross tube structure, and the connection between the horizontal tube (21), quick-connect screw (22), and connecting pipe (23) forms an arc-shaped connecting channel (24).

3. The fracturing aid weighing and feeding device according to claim 2, characterized in that, The flow stop (25) includes a mounting bracket (251), which is fixedly installed inside the transverse tube (21). A sliding rod (252) is mounted on the mounting bracket (251). A blocking ball (253) is fixedly installed on the head of the sliding rod (252). A spring (254) is sleeved on the sliding rod (252). One end of the spring is fixedly connected to the spherical surface corresponding to the blocking ball (253), and the other end of the spring (254) is fixedly connected to the frame surface of the mounting bracket (251) near the arc-shaped connecting channel (24). The blocking ball (253) seals the arc-shaped connecting channel (24) under the action of the elastic force of the spring (254).

4. The fracturing aid weighing and feeding device according to claim 1, characterized in that, The push-stop member (33) includes a mounting post (331), a toothed plate (332) is fixedly mounted on the lower cylindrical surface of the mounting post (331), and the toothed plate (332) is meshed with the corresponding arc-shaped toothed plate (32). A piston rod (333) is fixedly mounted on the end of the mounting post (331), and the piston rod (333) is inserted into the insertion cavity (21a) provided in the transverse tube (21) and a piston (334) is fixedly mounted thereon. The piston (334) is slidably connected to the insertion cavity (21a).

5. The fracturing aid weighing and feeding device according to claim 4, characterized in that, A sliding support frame (335) is fixedly installed on the storage cylinder (1), and the support ring on the sliding support frame (335) is sleeved on the piston rod (333) and slidably connected to the piston rod (333).

6. The fracturing aid weighing and feeding device according to claim 1, characterized in that, The weighing and feeding device also includes a weighing frame (4), the storage cylinder (1) is installed on the weighing frame (4), and a gravity sensor (41) for weighing the storage cylinder (1) is installed on the weighing frame (4).

7. The fracturing aid weighing and feeding device according to claim 6, characterized in that, A control panel (5) is fixedly installed on the storage cylinder (1).

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