CN110252191A - An electric drive mixing equipment - Google Patents

Abstract

The invention discloses an electric drive mixing equipment, which relates to the technical field of mixing equipment. The electric drive mixing equipment includes a motor power unit, a mixing tank, a discharge centrifugal pump, a suction centrifugal pump, a powder tank, a control room, a discharge A liquid manifold, a water-powder mixing manifold, a chemical additive pump and a suction header, a mixing tank is fixedly installed on one side of the motor power unit, and a control room is fixedly installed on one side of the mixing tank. The electric drive hybrid equipment, the motor selected is a frequency conversion integrated machine, that is, the frequency converter and the motor are integrated together, without a separate frequency conversion cabinet, which greatly saves the occupied space and makes the equipment more suitable for vehicle transportation. The frequency conversion integrated machine itself The calorific value is much lower than that of the motor. The heat sink is integrated on the motor and the inverter box casing. There is no such plate-fin cooling hole. The fan is provided with a large-channel air duct at the motor inverter casing, so there is no problem of blockage.

Description

An electric drive mixing equipment

technical field

The invention relates to the technical field of mixing equipment, in particular to an electric drive mixing equipment.

Background technique

Fracturing is the main measure to increase production in oil and gas fields. At present, fracturing operations at home and abroad, especially shale gas fracturing construction sites, require a large amount of fracturing base fluid. The application of fracturing fluid mixing vehicles is becoming more and more widespread, but with the increase of fracturing scale, the volume of fluid dosing is increasing, and the demand for mixing equipment is also increasing.

In China's oil and gas field fracturing operations, the configuration of the power transmission system used in the mixing equipment is that the diesel engine is connected to the transfer case to drive the hydraulic system. That is to say, the power source is a diesel engine, and the hydraulic system drives the actuator.

Due to the harsh working conditions of the oil field and the limited area of the well site, higher equipment integration and higher comprehensive performance are required. Usually, the existing dry powder mixed liquid supply equipment requires a mixing tank and a powder tank, and the powder The tank needs to meet the preparation of 1000 cubic meters of liquid, and the mixing tank needs to meet the buffer swelling time requirements of guar gum liquid, etc., and it needs to be as large as possible in a limited space to improve the quality of liquid preparation.

However, the power unit driven by a conventional engine has the following disadvantages: an external radiator takes up a large space; the engine usually needs to be equipped with a large-area multi-layer plate-fin radiator. The heat dissipation holes of the air duct of the engine are small, and it is very easy to be blocked by dust, which makes it difficult to clean; the engine has many wearing parts, consumes a lot of power, and is difficult to maintain.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides an electric drive mixing equipment, which solves the problem of the bulky volume of the existing mixing equipment for oil and gas fields. The common electric driving force unit occupies a large area, and the frequency converter and the motor are not used. To be integrated together, a separate frequency conversion cabinet is required, and mixing equipment with a capacity of 10m ³ /min or even 12m ³ /min cannot be transported by vehicle.

At the same time, it is different from the conventional engine-driven power unit, and does not have the following problems of the engine power unit: the conventional engine has an external radiator, which takes up a lot of space, high energy consumption of the engine, more wearing parts and consumables such as filter elements and oil products, and noise. High, the use cost of the user is relatively high; and when working outdoors, the wind and sand dust is relatively large, and the cooling holes of the air duct of the ordinary plate-fin radiator are small, which is very easy to be blocked by dust, etc., and there is a problem of difficulty in cleaning.

(2) Technical solution

To achieve the above object, the present invention is achieved through the following technical solutions:

An electric drive mixing equipment, including a motor power unit, a mixing tank, a discharge centrifugal pump, a suction centrifugal pump, a powder tank, a control room, a liquid discharge manifold, a water-powder mixing manifold, a chemical additive pump, and a suction header. A mixing tank is fixedly installed on one side of the motor power unit, a control room is fixedly installed on one side of the mixing tank, a powder tank is fixedly installed on one side of the control room, and the outlet of the mixing tank is connected to a discharge port. Centrifugal pump, the discharge centrifugal pump is located on the front side of the control room, the liquid discharge manifold is installed on the lower side of the control room, a screw conveyor is fixedly installed on the lower side of the powder tank, and the screw conveyor The lower part of the conveyor is equipped with a water-powder mixing manifold, the suction manifold is installed on the front side of the powder tank, the chemical additive pump is installed on both sides of the lower part of the powder tank, the water-powder mixing manifold and the suction centrifugal pump They are all installed on the lower side of the powder tank, the outlet end of the suction header is connected with the suction centrifugal pump, the discharge pipe of the suction centrifugal pump is connected with the inlet port of the water-powder mixing manifold, and the outlet port of the water-powder mixing manifold is connected with the The inlet port of the mixing tank is communicated, and the discharge pipe of the suction centrifugal pump is also communicated with the inlet of the mixing tank. It communicates with the inlet port of the discharge centrifugal pump, and the discharge centrifugal pump communicates with the inlet port of the discharge header of the discharge manifold, and the motor power unit is a frequency conversion integrated machine.

Optionally, the frequency conversion integrated machine of the motor power unit includes a motor, a frequency converter box integrated on the motor, a cooling fan of the motor, a hydraulic pump and a transfer case, and the output end of the motor is connected to the transfer case through a coupling. The rotating shaft in the box is fixedly connected, the bottom of the inverter box is fixedly connected to the top of the motor casing, one side of the hydraulic pump is fixedly connected to one side of the transfer case, and the transfer case is located between the motor and the hydraulic pump During the interval, the heat dissipation fan of the motor is arranged on the side away from the transfer case, and the fan of the radiator is provided with an air duct at the casing of the inverter box.

When the equipment is working, clean water enters the suction centrifugal pump through the suction header, and the suction centrifugal pump supplies clean water to the water-powder mixing manifold and the mixing tank. The two liquids in the tank are mixed in the mixing tank, and the liquid is supplied to the discharge centrifugal pump through the discharge port of the mixing tank, and then discharged to the discharge header through the discharge centrifugal pump to complete the entire liquid mixing process. During the process, the chemical additive pump can be supplied to the equipment in proportion Add chemicals to the inlet, outlet, or mixing tank.

(3) Beneficial effects

The invention provides an electric drive mixing equipment, which has the following beneficial effects:

The electric drive hybrid equipment, the motor selected is a frequency conversion integrated machine, that is, the frequency converter and the motor are integrated together, without a separate frequency conversion cabinet, which greatly saves the occupied space and makes the equipment more suitable for vehicle transportation. The frequency conversion integrated machine itself The calorific value is much lower than that of the motor. The heat sink is integrated on the motor and the inverter box casing. There is no such plate-fin cooling hole. The fan is provided with a large-channel air duct at the motor inverter casing, so there is no problem of blockage.

Description of drawings

Fig. 1 is the schematic front view of the mixing equipment structure of the present invention;

Fig. 2 is a rear view schematic diagram of the mixing equipment structure of the present invention;

Fig. 3 is the structural representation of engine power unit in the prior art;

Fig. 4 is a schematic rear view of a partial front view structure of the present invention;

Fig. 5 is a schematic rear view of the rear view structure of Fig. 4 of the present invention;

Fig. 6 is a schematic structural diagram of the motor power unit of the present invention.

In the figure: 1. Motor power unit; 11. Radiator; 12. Motor; 13. Inverter box; 14. Cooling fan; 15. Hydraulic pump; 16. Transfer case; 17. Coupling; 2. Mixing tank ;3. Discharge centrifugal pump; 4. Powder tank; 5. Control room; 6. Liquid discharge manifold; 7. Water-powder mixing manifold; 8. Engine power unit; 101, discharge pipe; 18, screw conveyor; 19, suction header; 20, discharge header.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientation or position shown in the drawings The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, terms such as "installation", "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it may be a fixed connection or It is a detachable connection; it may be a mechanical connection; it may be a direct connection or an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

Referring to Fig. 1-6, the present invention provides a technical solution:

An electric drive mixing equipment, including a motor power unit 1, a mixing tank 2, a discharge centrifugal pump 3, a suction centrifugal pump 10, a powder tank 4, a control room 5, a liquid discharge manifold 6, a water-powder mixing manifold 7 and chemical Add a pump 9 and a suction header 19, a mixing tank 2 is fixedly installed on one side of the motor power unit 1, a control room 5 is fixedly installed on one side of the mixing tank 2, and a powder tank 4 is fixedly installed on one side of the control room 5, The outlet of the mixing tank 2 is connected with a discharge centrifugal pump 3, the discharge centrifugal pump 3 is located on the front side of the control chamber 5, the discharge manifold 6 is installed on the lower side of the control chamber 5, and the lower side of the powder tank 4 is fixedly installed with Screw conveyor 18, the bottom of screw conveyor 18 is equipped with water-powder mixing manifold 7, suction header 19 is installed on the front side of powder material tank 4, and chemical addition pump 9 is installed on both sides of powder material tank 4 bottom, water powder mixing Both the manifold 7 and the suction centrifugal pump 10 are installed on the lower side of the powder tank 4, the outlet end of the suction manifold 19 communicates with the suction centrifugal pump 10, the discharge pipe 101 of the suction centrifugal pump 10 is connected to the inlet port of the water-powder mixing manifold 7 connected, and the discharge pipe 101 of the suction centrifugal pump 10 is also communicated with the inlet of the mixing tank 2, the discharge port of the water-powder mixing manifold 7 is communicated with the inlet port of the mixing tank 2, and the discharge port of the screw conveyor 18 is connected with the water-powder mixing manifold The powder addition port of 7 is connected, the discharge port of the mixing tank 2 is connected with the inlet port of the discharge centrifugal pump 3, the discharge centrifugal pump 3 is connected with the inlet port of the discharge header 20 of the discharge manifold 6, and the motor power unit 1 is a frequency conversion One machine.

As an optional technical solution of the present invention: the frequency conversion integrated machine of the motor power unit 1 includes a motor 12, a frequency converter box 13 integrated on the motor 12, a cooling fan 14 of the motor 12, a hydraulic pump 15 and a transfer case 16, The output end of the motor 12 is fixedly connected to the rotating shaft in the transfer case 16 through the coupling 17, the bottom of the frequency converter box 13 is fixedly connected to the top of the motor 12 casing, and one side of the hydraulic pump 15 is connected to one side of the transfer case 16. Fixedly connected, the transfer case 16 is located between the motor 12 and the hydraulic pump 15, the cooling fan 14 of the motor 12 is arranged on the side away from the transfer case 16, and the fan of the radiator 11 is provided with a air duct.

As an optional solution of the present invention: the inverter box 13 may also adopt water circulation type water cooling for heat dissipation, or separately install a cooling device such as a box fan.

Working principle: when the equipment is working, clean water enters the suction centrifugal pump 10 through the suction header 19, and the suction centrifugal pump 10 supplies clean water to the water-powder mixing manifold 7 and the mixing tank 2, and the outlet of the water-powder mixing manifold 7 is connected to the mixing tank 2, and the water powder The two streams of liquid discharged from the mixing manifold 7 and the suction centrifugal pump 10 to the mixing tank 2 are mixed in the mixing tank 2, and the liquid is supplied to the discharge centrifugal pump 3 through the outlet of the mixing tank 2, and then discharged to the discharge header 20 through the discharge centrifugal pump 3 , to complete the entire liquid mixing process. During the process, the chemical addition pump 9 can add chemicals to the liquid inlet, liquid outlet, or mixing tank 2 of the equipment in proportion.

To sum up, the electric drive hybrid equipment, the motor selected is a frequency conversion integrated machine, that is, the frequency converter and the motor are integrated together, without a separate frequency conversion cabinet, which greatly saves the occupied space and makes the equipment more suitable for vehicle transportation , The heat generated by the frequency conversion integrated machine itself is much lower than that of the motor. The radiator is integrated on the motor and the inverter box shell. There is no such plate-fin heat dissipation hole. There is a problem of clogging.

It should be noted that, in the present invention, unless otherwise specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature "on" or "under" the second feature. Features come into contact indirectly through intermediaries. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (2)

1. a kind of electricity drives mixing device, including motor power unit (1), blending tank (2), discharge centrifugal pump (3), sucking centrifugal pump (10), powder material tank (4), control room (5), drain manifold (6) and pigment mixing manifold (7) and change add pump (9) and suction header (19), it is characterised in that: the side of the motor power unit (1) is fixedly installed with blending tank (2), the blending tank (2) Side is fixedly installed with control room (5), and the side of the control room (5) is fixedly installed with powder material tank (4), the blending tank (2) Outlet be connected with discharge centrifugal pump (3), the discharge centrifugal pump (3) is positioned in the front side of control room (5), the drain pipe Remittance (6) is mounted on the downside of control room (5), is fixedly installed with auger conveyor (18), the spiral shell on the downside of the powder material tank (4) The lower part of rotation conveyer (18) is equipped with pigment mixing manifold (7), before the suction header (19) is mounted on powder material tank (4) Side, describedization add the two sides that pump (9) is mounted on powder material tank (4) lower part, the pigment mixing manifold (7) and sucking centrifugal pump (10) It is installed in the downside of powder material tank (4), the outlet end of the suction header (19) is connected to sucking centrifugal pump (10), sucking centrifugation The discharge pipe (101) of (10) and being connected into port for pigment mixing manifold (7) are pumped, and sucks the discharge pipe of centrifugal pump (10) (101) it is also connected to the entrance of blending tank (2), the discharge port of the pigment mixing manifold (7) and the upstream end of blending tank (2) Mouth connection, the discharge port of the auger conveyor (18) are connected to the powder adding mouth of pigment mixing manifold (7), the blending tank (2) outlet is connected to discharge centrifugal pump (3) into port, and the discharge manifold of centrifugal pump (3) and drain manifold (6) is discharged (20) the port that enters is connected to, and the motor power unit (1) is frequency conversion all-in-one machine.

2. a kind of electricity according to claim 1 drives mixing device, it is characterised in that: the change of the motor power unit (1) Frequency all-in-one machine includes radiator fan (14), the liquid of motor (12), the frequency converter box (13) being integrated on motor (12), motor (12) The output end of press pump (15) and transfer case (16), the motor (12) is solid by the shaft in shaft coupling (17) and transfer case (16) Fixed to connect, the sledge top of the trellis above the motor power unit (1) is equipped with the radiator (11) to radiate to hydraulic oil, the change It is fixedly connected at the top of the bottom of frequency device case (13) and motor (12) shell, the side and transfer case (16) of the hydraulic pump (15) Side be fixedly connected, the transfer case (16) is located between motor (12) and hydraulic pump (15), the heat dissipation of the motor (12) Fan (14) is arranged far from the side of transfer case (16), and the fan of radiator (11) is arranged at the shell of frequency converter box (13) There is air duct.