Skid-mounted wellhead feeding and liquid preparing device

Abstract

The utility model relates to the technical field of wellhead feeding and liquid preparation, in particular to a skid-mounted wellhead feeding and liquid preparation device. The skid-mounted wellhead feeding and liquid preparing device comprises a skid-mounted seat and a mounting base fixedly mounted in the middle of the skid-mounted seat, and a control box is mounted on the skid-mounted seat; the stirring barrel is fixedly mounted at the top end of the mounting base, a transmission shaft is rotationally mounted in the stirring barrel, a plurality of stirring rods are uniformly mounted on the inner side wall, extending into the stirring barrel, of the transmission shaft, and a stirring motor for driving the transmission shaft to rotate is mounted on the mounting base; and the number of the electric telescopic rods is two, the two electric telescopic rods are symmetrically installed on the installation base, the telescopic ends of the two electric telescopic rods are jointly and fixedly provided with a lifting plate, a plurality of driving rods are installed at the bottom end of the lifting plate, and the ends, away from the lifting plate, of the plurality of driving rods are provided with scraping discs used for scraping excess materials of the stirring barrel. The skid-mounted wellhead feeding and liquid preparing device has the advantages of being efficient in prepared liquid conveying and few in residue.

Description

Technical Field

[0001] The utility model relates to the technical field of wellhead feeding and liquid mixing, in particular to a skid-mounted wellhead feeding and liquid mixing device. Background Art

[0002] The skid-mounted wellhead material and fluid dispensing system is an integrated, modular oilfield chemical dispensing and injection device, primarily used for fracturing, acidizing, and profile adjustment and flooding operations in oil and gas field development. Its core feature is the integration of dispensing equipment, storage tanks, and control systems on a mobile skid-mounted platform, enabling rapid deployment and direct wellhead material and fluid dispensing, improving operational efficiency and flexibility.

[0003] Among them, when some viscous fracturing fluids are fed and mixed, their viscosity is large. When the fracturing fluid is stirred, it is easy to transfer to the inner wall of the mixing drum, affecting the mixing and transportation of the entire fracturing fluid. The current publication number: CN222468760U discloses a fracturing fluid skid-mounted liquid mixing device, which includes a base and two sets of skid-mounted bases mounted on the top of the base. The tops of the two sets of skid-mounted bases are skid-mounted with a mixing tank and a pressure tank respectively. The stirring assembly installed inside the stirring tank is driven to rotate by the stirring motor on the top. The bottom of the stirring assembly is also equipped with a scraping assembly. The pressure tank is equipped with an extrusion assembly. By starting the stirring motor The machine can drive the rotating shaft to rotate, so that the stirring rod can mix the internal pressure liquid. At the same time, when the rotating shaft rotates, the scraper at the bottom of the rotating shaft also rotates, which can scrape the bottom of the stirring tank to avoid the pressure liquid at the bottom of the stirring tank from being stuck due to its high viscosity. It ensures that the delivery pump can deliver the pressure liquid to the pressure tank through the connecting pipe, reduces the number of times the pressure tank is cleaned, and improves the mixing efficiency. During use, it only relies on the scraper at the bottom to scrape the bottom of the stirring tank, and cannot efficiently scrape and discharge the fracturing fluid adhered to the interior of the stirring tank and the stirring components.

[0004] Therefore, it is necessary to provide a skid-mounted wellhead feeding and liquid distribution device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a skid-mounted wellhead feeding and liquid dispensing device.

[0006] The skid-mounted wellhead feeding and liquid dispensing device provided by the utility model comprises: a skid-mounted seat, and a mounting base fixedly mounted in the middle of the skid-mounted seat, and liquid dispensing racks are mounted on both sides of the mounting base of the skid-mounted seat, and a plurality of liquid storage tanks are mounted on the liquid dispensing racks, and a control box is mounted on the skid-mounted seat;

[0007] A mixing drum is fixedly mounted on the top of the mounting base, and a transmission shaft is rotatably mounted in the mixing drum, the transmission shaft extends into the inner wall of the mixing drum and is evenly mounted with a plurality of stirring rods, the plurality of stirring rods being distributed in a circle based on the axis of the transmission shaft, and a stirring motor for driving the transmission shaft to rotate is mounted on the mounting base;

[0008] Two groups of electric telescopic rods are provided. The two groups of electric telescopic rods are symmetrically installed on the mounting base, and the telescopic ends of the two groups of electric telescopic rods are commonly fixedly installed with a lifting plate. A number of driving rods are installed at the bottom end of the lifting plate, and a scraping disk for scraping off the residual material in the mixing drum is installed at the end of the driving rods away from the lifting plate. A rotation-stop assembly for limiting the rotation of the drive shaft is installed at the top of the mixing drum. The stirring motor and the two groups of electric telescopic rods are electrically connected to the control box.

[0009] Preferably, a through hole is provided in the middle of the scraping disk for sliding engagement with the transmission shaft, and an outer side wall of the scraping disk is slidably engaged with an inner side wall of the mixing drum, and a through groove is provided on the scraping disk for vertical alignment with a plurality of mixing rods.

[0010] Preferably, limit plates are symmetrically installed on both sides of the through slot, and the side of the limit plate facing the through slot is connected to a scraper plate for blocking the through slot through a number of springs. Insert rods are fixedly installed at both ends of the scraper plate, and the insert rods are slidably fitted with the limit plates.

[0011] Preferably, the anti-rotation assembly includes a limit sleeve and an electric rod, the limit sleeve is fixedly installed on the top of the transmission shaft, and the outer wall of the limit sleeve is provided with a slide groove, and a limit hole is provided in the slide groove, the electric rod is fixedly installed on the top of the mixing drum, and the telescopic end of the electric rod is fixedly installed with a sleeve, and a guide rod is slidably installed in the sleeve, and a limit ball head is fixedly installed on one end of the guide rod facing the limit sleeve, and the limit ball head is plugged into the limit hole, and a limit spring is provided on the guide rod, one end of the limit spring is fixedly connected to the sleeve, and the other end of the limit spring is fixedly connected to the limit ball head, and the electric rod is electrically connected to the control box.

[0012] Preferably, the limiting ball head is horizontally aligned with the chute, and the diameter of the limiting ball head is equal to the width of the chute.

[0013] Preferably, the bottom end of the mixing drum is connected to a drain pipe, a control valve is embedded in the drain pipe, a delivery pump connected to the drain pipe is installed on the skid-mounted seat, and the delivery pump and the control valve are electrically connected to the control box.

[0014] Preferably, a liquid inlet pipe is embedded on one side of the top end of the mixing drum, and the liquid inlet pipe is connected to several liquid storage tanks through a metering pump.

[0015] Compared with related technologies, the skid-mounted wellhead feeding and liquid distribution device provided by the present invention has the following beneficial effects:

[0016] 1. The utility model provides a skid-mounted wellhead feeding and liquid dispensing device. A scraper disc is arranged on the mixing drum. The scraper disc is driven by an electric telescopic rod, a lifting plate and a driving rod. The scraper disc is provided with a through slot and a rotation-stop assembly. The scraper disc can move vertically in the mixing drum, thereby efficiently scraping off the conveying liquid adhering to the inner wall of the mixing drum, thereby reducing the residual amount of liquid delivery.

[0017] 2. A limit plate, a scraping plate and an insert rod are set on the through groove of the scraper disc. While not blocking the scraper disc from sliding along the mixing drum, the mucus adhered to the mixing rod is pressed and scraped off to reduce the mucus adhesion on the mixing rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a preferred embodiment of the skid-mounted wellhead feeding and liquid distribution device provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the mixing drum provided by the utility model;

[0020] Figure 3 A schematic diagram of the structure of the scraping disc provided by the utility model;

[0021] Figure 4 This is a structural schematic diagram of a mixing drum provided by the utility model equipped with a rotation-stop assembly.

[0022] Numbers in the figure: 1. Skid mount; 2. Mounting base; 3. Liquid distribution rack; 4. Mixing drum; 41. Drive shaft; 42. Mixing rod; 43. Mixing motor; 44. Liquid discharge pipe; 45. Liquid inlet pipe; 46. Delivery pump; 5. Electric telescopic rod; 51. Lifting plate; 52. Drive rod; 6. Scraper plate; 601. Through groove; 61. Limit plate; 62. Scraper plate; 63. Insert rod; 7. Anti-rotation assembly; 71. Limit sleeve; 72. Electric rod; 73. Sleeve; 74. Guide rod; 75. Limit ball head; 76. Limit spring; 701. Slide groove; 702. Limit hole; 8. Liquid storage tank; 9. Control box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] See also Figures 1 to 4 The present invention provides a skid-mounted wellhead feeding and liquid dispensing device, which comprises:

[0026] A skid-mounted base 1, and a mounting base 2 fixedly mounted in the middle of the skid-mounted base 1, with liquid distribution racks 3 mounted on both sides of the mounting base 2 on the skid-mounted base 1, and a plurality of liquid storage tanks 8 mounted on the liquid distribution racks 3, and a control box 9 mounted on the skid-mounted base 1;

[0027] A mixing drum 4 is fixedly mounted on the top of the mounting base 2, and a transmission shaft 41 is rotatably mounted in the mixing drum 4. The transmission shaft 41 extends into the inner wall of the mixing drum 4 and is evenly mounted with a plurality of stirring rods 42. The plurality of stirring rods 42 are distributed in a circle based on the axis of the transmission shaft 41, and a stirring motor 43 for driving the transmission shaft 41 to rotate is mounted on the mounting base 2;

[0028] There are two groups of electric telescopic rods 5. The two groups of electric telescopic rods 5 are symmetrically installed on the mounting base 2, and the telescopic ends of the two groups of electric telescopic rods 5 are fixedly installed with a lifting plate 51. The bottom end of the lifting plate 51 is installed with a plurality of driving rods 52. The ends of the plurality of driving rods 52 facing away from the lifting plate 51 are installed with a scraping disk 6 for scraping off the residual material of the mixing drum 4. The top of the mixing drum 4 is installed with a rotation-stop assembly 7 for limiting the rotation of the drive shaft 41. The stirring motor 43 and the two groups of electric telescopic rods 5 are electrically connected to the control box 9.

[0029] The scraper disc 6 has a through hole in the middle thereof for slidingly engaging with the transmission shaft 41, and the outer wall of the scraper disc 6 is in sliding engagement with the inner wall of the mixing drum 4. The scraper disc 6 has a through slot 601 vertically aligned with a plurality of stirring rods 42.

[0030] Limiting plates 61 are symmetrically installed on both sides of the through slot 601. The limiting plates 61 are connected to a scraping plate 62 for blocking the through slot 601 through a number of springs on the side facing the through slot 601. Insert rods 63 are fixedly installed at both ends of the scraping plate 62, and the insert rods 63 are slidably fitted with the limiting plates 61.

[0031] It should be noted that: when in use, after the raw materials of the ingredients are introduced into the mixing drum 4 in proportion, the stirring motor 43 is started through the control box 9 to drive the transmission shaft 41 to drive the stirring rod 42 to stir the raw materials in the mixing drum 4. After sufficient stirring, the stirring motor 43 is controlled to stop. When stopping, the transmission shaft 41 is limited to the initial position by the anti-rotation component 7. At this time, several stirring rods 42 are vertically aligned with the through groove 601 of the scraper disk 6, and then the electric telescopic rod 5 is controlled to drive the lifting plate 51 to move vertically downward. During movement, the scraper disk 6 is driven by the drive rod 52 to move downward synchronously along the mixing drum 4. During movement, the mucus adhered to the inner wall of the mixing drum 4 is scraped off. During scraping, when the stirring rod 42 passes through the through groove 601, the mucus adhered to the stirring rod 42 will also be scraped off by both sides of the through groove 601, thereby realizing efficient unloading of the liquid during liquid transportation.

[0032] It should also be noted that the cross-section of the scraper plate 62 here is a flat isosceles triangle, so that the scraper plates 62 on both sides of the through slot 601 are driven by the spring. When they are aligned, no matter whether the stirring rod 42 passes through the through slot 601 from above or below, the stirring rod 42 can contact the waist side of the scraper plate 62, thereby smoothly squeezing the scraper plates 62 to both sides, thereby smoothly passing through the through slot 601, making it easier for the scraper disk 6 to move down and scrape the material. Here, the width of the through slot 601 is adapted to the diameter of the stirring rod 42, making it easier for the stirring rod 42 to pass through the through slot 601.

[0033] In the embodiments of the present invention, please refer to Figures 1 to 4 The locking cam 71 is fixedly mounted on the top of the transmission shaft 41, and a sliding groove 701 is provided on the outer wall of the sliding groove 701, and a limiting hole 702 is provided in the sliding groove 701. The electric rod 72 is fixedly mounted on the top of the mixing drum 4, and a sleeve 73 is fixedly mounted on the telescopic end of the electric rod 72, and a guide rod 74 is slidably mounted in the sleeve 73. A limiting ball head 75 is fixedly mounted on one end of the guide rod 74 facing the limiting sleeve 71, and the limiting ball head 75 is plugged into the limiting hole 702. A limiting spring 76 is sleeved on the guide rod 74, and one end of the limiting spring 76 is fixedly connected to the sleeve 73, and the other end of the limiting spring 76 is fixedly connected to the limiting ball head 75. The electric rod 72 is electrically connected to the control box 9;

[0034] The limiting ball head 75 is horizontally aligned with the sliding groove 701 , and the diameter of the limiting ball head 75 is equal to the groove width of the sliding groove 701 .

[0035] It should be noted that: after sufficient stirring, the stirring motor 43 is controlled to stop. After stopping, the stirring motor 43 will still drive the transmission shaft 41 to rotate at a reduced speed until it stops completely. When stopping, the electric rod 72 is synchronously controlled by the control box 9 to drive the sleeve 73 to approach the limit sleeve 71. When approaching, the limit ball head 75 is driven by the limit spring 76 to be inserted into the slide groove 701 first. As the electric rod 72 continues to extend, until the limit ball head 75 is inserted into the limit hole 702 of the limit sleeve 71, the rotation-stopping positioning of the transmission shaft 41 is completed, so that after stopping, the through groove 601 of the scraper disk 6 can be vertically aligned with the stirring rod 42, so that the scraper disk 6 can move up and down smoothly along the mixing drum 4 after stopping.

[0036] In the embodiments of the present invention, please refer to Figures 1 to 4 The bottom end of the mixing drum 4 is connected to a drain pipe 44, and a control valve is embedded in the drain pipe 44. A delivery pump 46 connected to the drain pipe 44 is installed on the skid-mounted seat 1. The delivery pump 46 and the control valve are both electrically connected to the control box 9;

[0037] It should be noted that after the mixing drum 4 mixes the raw materials, when transporting, the delivery pump 46 can be used to pump and transport the mixing liquid in the mixing drum 4. During transportation, the electric telescopic rod 5 is synchronously started to drive the scraping disk 6 to scrape the material to achieve efficient transportation of the mixing liquid.

[0038] In the embodiments of the present invention, please refer to Figures 1 to 4 A liquid inlet pipe 45 is embedded on one side of the top of the mixing drum 4, and the liquid inlet pipe 45 is connected to several liquid storage tanks 8 through a metering pump.

[0039] It should be noted that the required materials are placed on the liquid preparation rack 3 and transported to the mixing drum 4 through the liquid inlet pipe 45 by the metering pump, making the feeding and liquid preparation more convenient and making the raw material ratio management easier.

[0040] The working principle of the skid-mounted wellhead feeding and liquid distribution device provided by the utility model is as follows:

[0041] The required feeding ingredients are placed on the liquid preparation rack 3, and are transported to the mixing drum 4 through the liquid inlet pipe 45 by the metering pump. After the ingredients are introduced into the mixing drum 4 in proportion, the stirring motor 43 is started through the control box 9 to drive the transmission shaft 41 to drive the stirring rod 42 to stir the materials in the mixing drum 4. After sufficient stirring, the stirring motor 43 is controlled to stop. After stopping, the stirring motor 43 will still drive the transmission shaft 41 to rotate at a reduced speed until it is completely stopped. When stopping, the electric rod 72 is controlled by the control box 9 to drive the sleeve 73 to approach the limit sleeve 71. When approaching, the limit ball head 75 is driven by the limit spring 76 to first insert into the slide groove 701. As the electric rod 72 continues to move, the sleeve 73 is driven to move closer to the limit sleeve 71. Continue to extend it until the limiting ball head 75 is inserted into the limiting hole 702 of the limiting sleeve 71, completing the anti-rotation positioning of the transmission shaft 41, so that after stopping, the through groove 601 of the scraper disk 6 can be vertically aligned with the stirring rod 42, and then the electric telescopic rod 5 is controlled to drive the lifting plate 51 to move vertically downward. During movement, the scraper disk 6 is driven by the driving rod 52 to move downward synchronously along the inside of the mixing drum 4. During movement, the mucus adhered to the inner wall of the mixing drum 4 is scraped off. During scraping, when the stirring rod 42 passes through the through groove 601, the mucus adhered to the stirring rod 42 will also be scraped off on both sides of the through groove 601, thereby achieving efficient liquid unloading during liquid delivery and less liquid delivery residue.

[0042] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A skid-mounted wellhead feeding and liquid dispensing device, comprising: A skid-mounted seat (1), and a mounting base (2) fixedly mounted in the middle of the skid-mounted seat (1), wherein liquid distribution racks (3) are mounted on both sides of the mounting base (2) on the skid-mounted seat (1), and a plurality of liquid storage tanks (8) are mounted on the liquid distribution racks (3), and a control box (9) is mounted on the skid-mounted seat (1); It is characterized by further comprising: A mixing drum (4) is fixedly mounted on the top of the mounting base (2), and a transmission shaft (41) is rotatably mounted in the mixing drum (4), the transmission shaft (41) extending into the inner side wall of the mixing drum (4) and having a plurality of stirring rods (42) evenly mounted thereon, the plurality of stirring rods (42) being distributed in a circle based on the axis of the transmission shaft (41), and a stirring motor (43) for driving the transmission shaft (41) to rotate is mounted on the mounting base (2); Two groups of electric telescopic rods (5) are provided. The two groups of electric telescopic rods (5) are symmetrically mounted on the mounting base (2), and the telescopic ends of the two groups of electric telescopic rods (5) are fixedly mounted with a lifting plate (51). The bottom end of the lifting plate (51) is mounted with a plurality of driving rods (52), and one end of the plurality of driving rods (52) facing away from the lifting plate (51) is mounted with a scraping disk (6) for scraping off the residual material of the mixing drum (4). The top end of the mixing drum (4) is mounted with a rotation-stop assembly (7) for limiting the rotation of the transmission shaft (41). The stirring motor (43) and the two groups of electric telescopic rods (5) are electrically connected to the control box (9).

2. The skid-mounted wellhead feeding and liquid dispensing device according to claim 1, characterized in that: A through hole is provided in the middle of the scraper disc (6) for sliding engagement with the transmission shaft (41), and an outer sidewall of the scraper disc (6) is slidably engaged with an inner sidewall of the mixing drum (4). A through groove (601) is provided on the scraper disc (6) for vertical alignment with a plurality of mixing rods (42).

3. The skid-mounted wellhead feeding and liquid dispensing device according to claim 2, characterized in that: Limiting plates (61) are symmetrically mounted on both sides of the through slot (601). The side of the limiting plate (61) facing the through slot (601) is connected to a scraping plate (62) for blocking the through slot (601) via a plurality of springs. Inserting rods (63) are fixedly mounted at both ends of the scraping plate (62). The inserting rods (63) are in sliding engagement with the limiting plates (61).

4. The skid-mounted wellhead feeding and liquid dispensing device according to claim 1, characterized in that: The anti-rotation assembly (7) includes a limiting sleeve (71) and an electric rod (72), wherein the limiting sleeve (71) is fixedly mounted on the top end of the transmission shaft (41), and a sliding groove (701) is provided on the outer wall of the limiting sleeve (71), and a limiting hole (702) is provided in the sliding groove (701), and the electric rod (72) is fixedly mounted on the top end of the mixing drum (4), and a sleeve (73) is fixedly mounted on the telescopic end of the electric rod (72), and a sliding hole (702) is provided in the sleeve (73). A guide rod (74) is provided, and a limiting ball head (75) is fixedly installed on one end of the guide rod (74) facing the limiting sleeve (71), and the limiting ball head (75) is plugged into the limiting hole (702). A limiting spring (76) is sleeved on the guide rod (74), and one end of the limiting spring (76) is fixedly connected to the sleeve (73), and the other end of the limiting spring (76) is fixedly connected to the limiting ball head (75). The electric rod (72) is electrically connected to the control box (9).

5. The skid-mounted wellhead feeding and liquid distribution device according to claim 4, characterized in that: The limiting ball head (75) is horizontally aligned with the chute (701), and the diameter of the limiting ball head (75) is equal to the groove width of the chute (701).

6. The skid-mounted wellhead feeding and liquid dispensing device according to claim 1, characterized in that: The bottom end of the mixing drum (4) is connected to a drain pipe (44), a control valve is embedded in the drain pipe (44), and a delivery pump (46) connected to the drain pipe (44) is installed on the skid-mounted seat (1), and the delivery pump (46) and the control valve are both electrically connected to the control box (9).

7. The skid-mounted wellhead feeding and liquid dispensing device according to claim 1, characterized in that: A liquid inlet pipe (45) is embedded on one side of the top end of the mixing drum (4), and the liquid inlet pipe (45) is connected to a plurality of liquid storage tanks (8) via a metering pump.

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