Online continuous mixing preparation equipment system for fracturing fluid
By adding a suction impeller and a flushing circuit to the mixer, the problem of uneven mixing of liquid and solid materials was solved, achieving efficient and uniform mixing of fracturing fluid and ensuring the quality of the mixed product.
Patent Information
- Application Number
- CN202520005978.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing fracturing fluid preparation equipment has difficulty effectively mixing liquid and solid materials, resulting in uneven mixing. Furthermore, liquid materials are difficult to be drawn to the solid material mixing location along the expected path, requiring a large negative pressure suction force.
A suction impeller and a flushing circuit are added to the mixer. The suction impeller increases the negative pressure suction of liquid materials, and the flushing circuit ensures that all powder materials are fed in. Combined with the inner rotor and the outer rotor to form a negative pressure in the same direction, the liquid and solid materials are mixed evenly.
It improves the efficiency of mixing, ensures continuous and full feeding of liquid and solid materials, and enhances the uniformity and quality of the mixed product.
Smart Images
Figure CN223683472U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to material mixing equipment technical field especially a kind of fracturing fluid online continuous mixing preparation equipment system. BACKGROUND
[0002] Fracturing fluid is widely used, and is a proppant that is delivered to the formation by high pressure formed by surface equipment, cracks the formation and is transported along the cracks.
[0003] Fracturing fluid is a mixture with viscosity, which is made by mixing multiple materials. The materials include liquid materials and solid materials. The liquid materials have large flowability and are affected by gravity. If you want to suck the liquid materials to the mixing position of solid materials such as powder according to the expected path, you need to provide a large negative pressure suction force. SUMMARY
[0004] The applicant provides a fracturing fluid online continuous mixing preparation equipment system with a reasonable structure to solve the above problems in the prior art production technology. By increasing the suction impeller and the flushing circuit, the suction force on the liquid material is increased, the stirring efficiency is improved, and the flushing circuit is beneficial to carrying powder and repeated stirring and mixing, thereby ensuring the uniformity of the continuous feeding of liquid materials and solid materials and the discharge of finished products.
[0005] The technical solutions adopted by the utility model are as follows:
[0006] A fracturing fluid online continuous mixing preparation equipment system includes at least one set of fracturing fluid online continuous mixing preparation equipment. Each set of fracturing fluid online continuous mixing preparation equipment includes a powder metering feeding device, a water chiller, and a mixer,
[0007] The mixer includes a feeding pipe, a discharging pipe, and a motor as a stirring power source,
[0008] The discharging pipe has a flushing circuit connected to the feeding pipe at the discharging end of the flushing circuit.
[0009] The solid materials and the liquid materials are fed in opposite directions. The feeding path of the solid materials and the feeding path of the liquid materials form a mixing chamber. A rotor driven by the motor is arranged in the mixing chamber. A suction impeller is coaxially arranged on the shaft of the rotor. The liquid material is subjected to the negative pressure effect of the suction impeller and the rotor.
[0010] As a further improvement of the above technical solutions:
[0011] The flushing circuit is provided with a valve.
[0012] The feeding path of the solid materials is an inclined downward pipe. The output end of the flushing circuit is communicated to the inclined section of the feeding pipe on the side away from the ground.
[0013] The suction impeller is located between the rotor and the liquid material feeding path.
[0014] The suction impeller is directly driven by the motor.
[0015] The rotor comprises an inner rotor for dispersing the powder and an outer rotor for forming a suction negative pressure.
[0016] The inner rotor is provided with eccentric blades on the side facing the liquid material, and the eccentric blades, the outer rotor and the suction impeller form a same-direction negative pressure.
[0017] The powder metering and feeding device in the same system independently feeds the corresponding mixer; and the water chiller feeds all the mixers in parallel.
[0018] The beneficial effects of the utility model are as follows:
[0019] The utility model adds the suction impeller in the mixing cavity of the mixer, increases the negative pressure suction force on the liquid material, adds the flushing circuit on the discharge pipeline and the powder feeding pipeline, ensures that the powder can be brought into the mixing cavity, and further ensures the quality of the output finished product. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the whole system structure schematic view of the utility model, and the working conditions of two sets of mixers are taken as examples in the drawing.
[0021] Figure 2 It is the structure schematic view of a single set of mixer in the system of the utility model.
[0022] Figure 3 It is the internal structure schematic view of the mixer of the utility model.
[0023] Figure 4 It is the inner rotor structure schematic view of the utility model.
[0024] 1, powder metering and feeding device; 2, water chiller; 3, mixer;
[0025] 301, powder feeding pipeline; 302, liquid feeding pipeline; 303, discharge pipeline; 304, mixing cavity; 305, flushing circuit; 306, valve; 307, motor; 308, suction impeller; 309, outer rotor; 310, inner rotor; 311, eccentric blade. DETAILED DESCRIPTION
[0026] The specific implementation manner of the utility model will be described below in combination with the drawings.
[0027] For example, Figures 1-4As shown, the on-line continuous mixing preparation equipment system of the fracturing fluid in the embodiment comprises at least one set of on-line continuous mixing preparation equipment of the fracturing fluid, each set of on-line continuous mixing preparation equipment of the fracturing fluid comprises a powder metering feeding device 1, a cold water machine 2 and a mixer 3,
[0028] The mixer 3 comprises a feeding pipeline, a discharging pipeline 303 and a motor 307 as a stirring power source,
[0029] The discharging pipeline 303 is provided with a flushing circuit 305, and the discharging end of the flushing circuit 305 is connected to the feeding pipeline,
[0030] The solid material and the liquid material are fed in opposite directions, and the feeding path of the solid material and the feeding path of the liquid material are mixed in a mixing cavity 304, the mixing cavity 304 is provided with a rotor driven by the motor 307, and a suction impeller 308 is coaxially arranged on the shaft of the rotor, and the liquid material is subjected to the negative pressure action of the suction impeller 308 and the rotor.
[0031] The flushing circuit 305 is provided with a valve 306.
[0032] The feeding path of the solid material is an inclined downward pipeline, and the output end of the flushing circuit 305 is communicated to the inclined section of the feeding pipeline away from the ground.
[0033] The suction impeller 308 is located between the rotor and the liquid material feeding path.
[0034] The suction impeller 308 is a direct drive of the motor 307.
[0035] The rotor comprises an inner rotor 310 and an outer rotor 309, the inner rotor 310 is used for dispersing the powder, and the outer rotor 309 is used for forming the suction negative pressure.
[0036] The side of the inner rotor 310 facing the liquid material is formed with an eccentric blade 311, and the eccentric blade 311, the outer rotor 309 and the suction impeller 308 form the same direction negative pressure.
[0037] The powder metering feeding device 1 in the same system independently supplies the corresponding mixer; the cold water machine 2 supplies all the mixers in parallel.
[0038] The specific structure and working principle of the utility model are as follows:
[0039] As shown in the figure, Figure 1 As shown in the figure, there can be one or more sets of mixers 3 in the system, and each set of mixer 3 is provided with an independently configured powder metering feeding device 1. All the mixers 3 share a set of cold water machines 2. The powder metering feeding device 1 and the cold water machine 2 are existing commercial equipment, which are not described in detail in the embodiment.
[0040] The main improvement of the utility model lies in that the mixer 3 can provide greater negative pressure suction force for liquid material, and the flushing circuit 305 is used to ensure that the powder is fully put, no residue is left in the pipe, so as to ensure the mixing effect.
[0041] Figure 2 In the utility model, taking one of the mixers 3 as an example, combined with reference Figure 3 The negative pressure suction force is provided by the eccentric blades 311 of the inner rotor 310, the outer rotor 309 and the suction impeller 308.
[0042] The mixer 3 comprises a motor 307 as a power source and a mixing cavity 304, and the output shaft of the motor 307 extends into the mixing cavity 304, and the inner rotor 310, the outer rotor 309 and the suction impeller 308 are sequentially installed on the output shaft, wherein the eccentric blades 311 of the inner rotor 310, the blades of the outer rotor 309 and the blades of the suction impeller 308 all face the feeding side of the liquid material, when the blades rotate, the same direction negative pressure suction force is generated, the liquid material in the liquid feeding pipeline 302 is sucked to the mixing cavity 304, and after being mixed with the powder in the powder feeding pipeline 301, the mixed material is output from the discharge pipeline 303.
[0043] The side of the discharge pipeline 303 leads to a flushing circuit 305, and the flushing circuit 305 is provided with a valve 306 for controlling the on-off. The mixed material is conveyed to the middle section of the powder feeding pipeline 301 through the flushing circuit 305, and is located above the powder feeding pipeline 301, so that the mixed material can re-enter the mixing cavity 304 through the powder feeding pipeline 301 again under the action of gravity and the powder feeding force, so as to carry the powder and prevent the powder from remaining in the powder feeding pipeline 301.
[0044] The scheme is used for preparing the fracturing fluid, so that the powder and the liquid material can enter the mixing cavity 304 according to the expected amount, and the mixing ratio is accurate. Two or more mixers 3 in a set of system can prevent the last mixer 3 from idling, so as to achieve the purpose of safe production.
[0045] The above description is the explanation of the utility model, not the limitation of the utility model, the range defined by the utility model is referred to the claims, and any form of modification can be made within the protection range of the utility model.
Claims
1. A system for the on-line continuous mixing preparation of a fracturing fluid, characterized in that it comprises: The application relates to a continuous on-line mixing and preparing device for at least one group of fracturing fluid, wherein each group of the continuous on-line mixing and preparing device for fracturing fluid comprises a powder metering and feeding device (1), a cold water machine (2) and a mixer (3), The mixer (3) comprises a feeding pipeline, a discharging pipeline (303) and a motor (307) as a stirring power source, The discharging pipeline (303) is provided with a flushing circuit (305), and the discharging end of the flushing circuit (305) is connected to the feeding pipeline, The solid material and the liquid material are fed in opposite directions, and a mixing cavity (304) is arranged between the feeding path of the solid material and the feeding path of the liquid material; a rotor driven by the motor (307) is arranged in the mixing cavity (304), and a suction impeller (308) is coaxially arranged on the shaft of the rotor; the liquid material is subjected to the negative pressure effect of the suction impeller (308) and the rotor.
2. The system for on-line continuous mixing preparation of a fracturing fluid according to claim 1, characterized in that: The flushing circuit (305) is provided with a valve (306).
3. The system for on-line continuous mixing preparation of fracturing fluid according to claim 1, characterized in that: The feeding path of the solid material is an inclined downward pipeline, and the output end of the flushing circuit (305) is communicated to the inclined section of the feeding pipeline which deviates from the ground.
4. The system for on-line continuous mixing preparation of the fracturing fluid of claim 1, wherein: The suction impeller (308) is located between the rotor and the feeding path of the liquid material.
5. The system for on-line continuous mixing preparation of the fracturing fluid of claim 4, characterized in that: The suction impeller (308) is a direct driving part of the motor (307).
6. The system for on-line continuous mixing preparation of a fracturing fluid of claim 1, wherein: The rotor comprises an inner rotor (310) and an outer rotor (309), the inner rotor (310) is used for dispersing powder, and the outer rotor (309) is used for forming a suction negative pressure.
7. The system for on-line continuous mixing preparation of a fracturing fluid of claim 6, wherein: Eccentric blades (311) are formed on the side of the inner rotor (310) facing the liquid material, and the eccentric blades (311), the outer rotor (309) and the suction impeller (308) form a same-direction negative pressure.
8. The system for on-line continuous mixing preparation of the fracturing fluid of claim 1, wherein: The powder metering and feeding device (1) in the same set of system independently feeds the corresponding mixer; and the cold water machine (2) parallelly feeds all the mixers.