Fracturing fluid preparation device

Abstract

The utility model belongs to the technical field of fracturing fluid processing equipment, and particularly relates to a fracturing fluid preparation device which comprises a preparation tank and a cover plate fixedly connected to the top of the preparation tank, a rotating rod is rotationally connected between a supporting plate at the bottom of the inner side of the preparation tank and the cover plate, and a stirring frame is fixedly connected to the rotating rod. A conical lower grinding disc is fixedly connected to the rotating rod above the stirring frame, and a conical upper grinding disc is fixedly connected to the inner wall of the preparation tank above the lower grinding disc. The upper grinding disc and the lower grinding disc are arranged on the inner side of the preparation tank, raw materials enter the space between the upper grinding disc and the lower grinding disc through the annular flaring in the top of the upper grinding disc, and during use, the rotating rod drives the lower grinding disc to rotate to achieve sufficient grinding of the raw materials; circulation and uniform processing of fracturing fluid can be achieved, and the problems that at the present stage, the grinding effect of a device is not good enough, and fracturing fluid processing is not uniform enough are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing fluid processing equipment, in particular to a fracturing fluid preparation device. Background Art

[0002] Fracturing fluid refers to a heterogeneous and unstable chemical system formed by a variety of additives in a certain ratio. It is the working fluid used in fracturing oil and gas layers. Its main function is to transfer the high pressure formed by ground equipment to the formation, causing the formation to break to form cracks and transport proppants along the cracks.

[0003] Patent announcement number CN202222502879.2 discloses a fracturing fluid preparation device, which achieves the grinding of raw materials by setting a grinding mechanism on the inner side of the preparation tank. However, when the grinding mechanism is in use, the grinding of the raw materials is achieved by means of grinding rollers and positioning rings arranged on the inner side thereof. The gap between the grinding rollers and the positioning rings is small, resulting in a short grinding time for the raw materials during the grinding process, and then insufficient grinding, which cannot ensure sufficient grinding of the fracturing fluid raw materials. Secondly, when preparing the fracturing fluid, the upper and lower layers are prone to unevenness, which affects the processing quality of the fracturing fluid. Therefore, the current device has certain defects and shortcomings and needs to be improved. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a fracturing fluid preparation device, by arranging an upper grinding disc and a lower grinding disc on the inner side of a preparation tank, the raw material enters between the upper and lower grinding discs through the annular expansion at the top of the upper grinding disc, and when in use, a rotating rod drives the lower grinding disc to rotate to achieve sufficient grinding of the raw material. At the same time, a circulating guide mechanism is installed at the bottom of the preparation tank, which can realize the circulation and uniform processing of the fracturing fluid, solving the problems of insufficient grinding effect and uneven processing of the fracturing fluid in the current device.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A fracturing fluid preparation device comprises a preparation tank and a cover plate fixedly connected to the top of the preparation tank, a rotating rod is rotatably connected between a support plate at the inner bottom of the preparation tank and the cover plate, a stirring frame is fixedly connected to the rotating rod, and a conical lower grinding disc is fixedly connected to the rotating rod above the stirring frame, a conical upper grinding disc is fixedly connected to the inner wall of the preparation tank above the lower grinding disc, grinding protrusions are provided on the lower surface of the upper grinding disc and the upper surface of the lower grinding disc, an annular flare is provided on the top of the upper grinding disc, a feed pipe is connected to the cover plate, the lower end of the feed pipe extends into the annular flare, and the upper end of the feed pipe is connected to a feed hopper.

[0009] Furthermore, an annular pipe is fixedly connected to the inner wall of the preparation tank above the upper grinding disc, a nozzle is connected to the bottom of the annular pipe, and a water spray pump for supplying water to the annular pipe is installed on the cover plate.

[0010] Furthermore, the upper grinding disc is fixed on the preparation tank via convex edges arranged on the side walls thereof, and drainage gaps are formed between the convex edges.

[0011] Furthermore, the bottom of the preparation tank is connected to a discharge hopper, a discharge pipe is arranged on the discharge hopper, and a discharge valve is installed on the discharge pipe.

[0012] Furthermore, a circulation guide mechanism is installed at the bottom of the preparation tank, and the circulation guide mechanism includes a circulation guide plate fixedly connected to the support plate, and a circulation pump installed on the outer wall of the preparation tank. A plurality of feed ports are arranged on the side wall of the circulation guide plate, and a circulation pipe is connected between the circulation pump and the circulation guide plate, and a discharge pipe of the circulation pump extends into the preparation tank and is connected to a discharge port.

[0013] Furthermore, a motor for driving the rotating rod to rotate is installed on the cover plate.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a fracturing fluid preparation device, which has the following beneficial effects:

[0016] 1. The utility model fixes the lower grinding disc on the rotating rod and the upper grinding disc on the inner wall of the preparation tank. When the rotating rod drives the stirring frame to rotate, the lower grinding disc can be driven to rotate, so that the material between the upper and lower grinding discs can be ground. The material flows during grinding and then flows out at the outer edge of the lower grinding disc. An annular flare is provided on the top of the upper grinding disc, and the rotating rod is located in the center of the annular flare, which does not affect the normal rotation of the rotating rod. The raw material enters the annular flare through the feed pipe and then enters between the upper and lower grinding discs to achieve full grinding of the raw material.

[0017] 2. The utility model installs a circulation guide mechanism at the bottom of the preparation tank. The setting of the circulation guide mechanism can realize the circulation guide of the fracturing fluid, so that the fracturing fluid in the lower layer flows into the upper layer, avoiding the upper and lower stratification and uneven stirring processing, thereby realizing full and uniform processing of the fracturing fluid and ensuring the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the circulation guide mechanism in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the utility model.

[0021] In the figure: 1. preparation tank; 2. lower grinding disc; 3. upper grinding disc; 4. cover plate; 5. feed pipe; 6. motor; 7. annular expansion; 8. feed hopper; 9. water spray pump; 10. annular pipe; 11. nozzle; 12. convex edge; 13. grinding protrusion; 14. rotating rod; 15. stirring frame; 16. support plate; 17. circulation guide mechanism; 1701. circulation guide disc; 1702. feed port; 1703. circulation pipe; 1704. circulation pump; 1705. discharge port; 18. discharge hopper; 19. discharge pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, a fracturing fluid preparation device proposed in an embodiment of the utility model comprises a preparation tank 1, and a cover plate 4 fixedly connected to the top of the preparation tank 1, a rotating rod 14 is rotatably connected between the support plate 16 at the inner bottom of the preparation tank 1 and the cover plate 4, a stirring frame 15 is fixedly connected to the rotating rod 14, and a conical lower grinding disc 2 is fixedly connected to the rotating rod 14 above the stirring frame 15, a conical upper grinding disc 3 is fixedly connected to the inner wall of the preparation tank 1 above the lower grinding disc 2, grinding protrusions 13 are provided on the lower surface of the upper grinding disc 3 and the upper surface of the lower grinding disc 2, an annular flare 7 is provided on the top of the upper grinding disc 3, a feed pipe 5 is connected to the cover plate 4, the lower end of the feed pipe 5 extends into the annular flare 7, and the upper end of the feed pipe 5 is connected to a feed hopper 8.

[0025] It should be noted that, by fixing a support plate 16 at the inner bottom of the preparation tank 1, the support plate 16 is used for the rotation support of the rotating rod 14. When the rotating rod 14 rotates, it drives the stirring frame 15 to rotate, so as to realize the stirring processing of the material. By fixing the lower grinding disc 2 on the upper part of the rotating rod 14, when the rotating rod 14 drives the stirring frame 15 to rotate, the lower grinding disc 2 can rotate along with it. By fixing the upper grinding disc 3 on the inner upper part of the preparation tank 1, the lower grinding disc 2 cooperates with the upper grinding disc 3 to grind the material when it rotates, so as to ensure the fineness of the fracturing fluid preparation. By setting grinding protrusions 13 on the lower surface of the upper grinding disc 3 and the upper surface of the lower grinding disc 2, the grinding protrusions 13 cooperate with each other to grind the material during operation. By setting an annular flare 7 on the top of the upper grinding disc 3, the rotating rod 14 is located in the middle of the annular flare 7, which does not affect the rotation of the rotating rod 14. The raw material enters the annular flare 7 through the feed hopper 8 and the feed pipe 5, and then enters between the lower grinding disc 2 and the upper grinding disc 3, so as to realize the feeding and grinding of the material.

[0026] like Figure 1 As shown, in some embodiments, an annular pipe 10 is fixedly connected to the inner wall of the preparation tank 1 above the upper grinding disc 3, a nozzle 11 is connected to the bottom of the annular pipe 10, and a water spray pump 9 for supplying water to the annular pipe 10 is installed on the cover plate 4.

[0027] It should be noted that, by fixing the annular tube 10 on the inner upper part of the preparation tank 1, the water pump 9 supplies water to the annular tube 10 during use, and the water is sprayed out through the nozzle 11 to add water to the ground material. On the one hand, it washes away the attachments on the inner wall of the preparation tank 1, and secondly, it adds water for the production of fracturing fluid.

[0028] like Figure 1 As shown, in some embodiments, the upper grinding disc 3 is fixed on the preparation tank 1 through the convex edges 12 arranged on the side walls thereof, and drainage gaps are formed between the convex edges 12 .

[0029] It should be noted that the upper grinding disc 3 is fixedly connected to the inner wall of the preparation tank 1 through the convex edge 12, and drainage holes are provided between the convex edges 12, and water is discharged through the drainage holes to achieve water addition of the material.

[0030] like Figure 1 As shown, in some embodiments, the bottom of the preparation tank 1 is connected to a discharge hopper 18 , a discharge pipe 19 is provided on the discharge hopper 18 , and a discharge valve is installed on the discharge pipe 19 .

[0031] It should be noted that the discharging hopper 18 is provided to facilitate discharging, and by installing a discharging valve on the discharging pipe 19, the discharging control of the device is facilitated.

[0032] like Figure 1 and Figure 2As shown, in some embodiments, a circulation guide mechanism 17 is installed at the bottom of the preparation tank 1, and the circulation guide mechanism 17 includes a circulation guide plate 1701 fixedly connected to the support plate 16, and a circulation pump 1704 installed on the outer wall of the preparation tank 1, and a plurality of feed ports 1702 are arranged on the side wall of the circulation guide plate 1701, and a circulation pipe 1703 is connected between the circulation pump 1704 and the circulation guide plate 1701, and a discharge pipe of the circulation pump 1704 extends into the preparation tank 1 and is connected to a discharge port 1705.

[0033] It should be noted that the setting of the circulation guide mechanism 17 can realize the circulation guide of the material and avoid uneven mixing processing. When in use, the circulation pump 1704 is driven to work, and the material at the bottom of the inner side of the preparation tank 1 enters the circulation guide plate 1701 through the feed port 1702, and then enters the circulation pump 1704 through the circulation pipe 1703. The material enters the preparation tank 1 through the discharge pipe, realizing the circulation guide of the material and avoiding the stratification of the material in the preparation tank 1, which then leads to uneven mixing processing.

[0034] like Figure 1 and Figure 3 As shown, in some embodiments, a motor 6 for driving the rotating rod 14 to rotate is mounted on the cover plate 4 .

[0035] It should be noted that the motor 6 can realize the rotational drive of the rotating rod 14, and then drive the stirring frame 15 and the lower grinding disc 2 to rotate.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fracturing fluid preparation device, comprising a preparation tank (1), and a cover plate (4) fixedly connected to the top of the preparation tank (1), characterized in that: A rotating rod (14) is rotatably connected between the support plate (16) at the bottom of the inner side of the preparation tank (1) and the cover plate (4); a stirring frame (15) is fixedly connected to the rotating rod (14); and a conical lower grinding disc (2) is fixedly connected to the rotating rod (14) above the stirring frame (15); a conical upper grinding disc (3) is fixedly connected to the inner wall of the preparation tank (1) above the lower grinding disc (2); grinding protrusions (13) are provided on the lower surface of the upper grinding disc (3) and the upper surface of the lower grinding disc (2); an annular flared opening (7) is provided on the top of the upper grinding disc (3); a feed pipe (5) is connected to the cover plate (4); the lower end of the feed pipe (5) extends into the annular flared opening (7); and the upper end of the feed pipe (5) is connected to a feed hopper (8).

2. A fracturing fluid preparation device according to claim 1, characterized in that: An annular pipe (10) is fixedly connected to the inner wall of the preparation tank (1) above the upper grinding disc (3); a nozzle (11) is connected to the bottom of the annular pipe (10); and a water spray pump (9) for supplying water to the annular pipe (10) is installed on the cover plate (4).

3. A fracturing fluid preparation device according to claim 1, characterized in that: The upper grinding disc (3) is fixed on the preparation tank (1) via a convex edge (12) arranged on the side wall thereof, and drainage holes are formed between the convex edges (12).

4. A fracturing fluid preparation device according to claim 1, characterized in that: The bottom of the preparation tank (1) is connected to a discharge hopper (18), a discharge pipe (19) is arranged on the discharge hopper (18), and a discharge valve is installed on the discharge pipe (19).

5. A fracturing fluid preparation device according to claim 1, characterized in that: A circulation guide mechanism (17) is installed at the bottom of the preparation tank (1), and the circulation guide mechanism (17) comprises a circulation guide plate (1701) fixedly connected to the support plate (16), and a circulation pump (1704) installed on the outer wall of the preparation tank (1), a plurality of feed ports (1702) are arranged on the side wall of the circulation guide plate (1701), and a circulation pipe (1703) is connected between the circulation pump (1704) and the circulation guide plate (1701), and a discharge pipe of the circulation pump (1704) extends into the preparation tank (1) and is connected to a discharge port (1705).

6. A fracturing fluid preparation device according to claim 1, characterized in that: A motor (6) for driving the rotating rod (14) to rotate is installed on the cover plate (4).

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