CN220779771U

CN220779771U - Venturi type dry powder adding device

Info

Publication number: CN220779771U
Application number: CN202322458484.1U
Authority: CN
Inventors: 张利宾; 胡海波; 王丹丹; 陶桂红; 马程; 李勇; 黄建喜
Original assignee: China National Petroleum Corp; CNPC Bohai Equipment Manufacturing Co Ltd
Current assignee: China National Petroleum Corp; CNPC Bohai Equipment Manufacturing Co Ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-04-16
Anticipated expiration: 2033-09-11

Abstract

The utility model relates to a venturi type dry powder adding device, wherein a liquid inlet end of a venturi mixer is connected with a liquid inlet assembly, and the liquid inlet assembly provides pressurized liquid for the venturi mixer; the dry powder inlet end of the venturi mixer is connected with the dry powder conveying assembly, the conveying device conveys the dry powder in the storage box to the mixing cavity of the venturi mixer, and a motor of the dry powder conveying assembly adopts a variable frequency motor; the mixed liquid outlet end of the Venturi mixer is connected with a mixed liquid outlet pipe; the control system monitors and controls the dry powder adding amount. The dry powder feeding device has the advantages of being reasonable in structural design, simple and convenient to operate, achieving uniform addition of dry powder through the control system, improving addition precision, being small in size, skid-mounted and the like, facilitating component installation and maintenance, effectively improving working efficiency of dry powder mixing, reducing energy consumption, improving production quality, reducing manual operation and improving overall efficiency of fracturing operation.

Description

Venturi type dry powder adding device

Technical Field

The utility model relates to a dry powder adding device, in particular to a venturi type dry powder adding device, and belongs to the technical field of oil gas development.

Background

In the process of injecting fracturing fluid into the underground well in oil gas development fracturing operation, a dry powder adding device is matched with sand mixing equipment so as to meet specific technological requirements. The existing dry powder adding device generally adopts a simple mechanical conveying mode, and has the problems of uneven dry powder adding and low adding precision.

Disclosure of utility model

In order to overcome the defects of uneven dry powder addition and low addition precision of the existing dry powder adding device, the utility model provides a venturi type dry powder adding device.

The technical scheme adopted for solving the technical problems is as follows: a venturi type dry powder adding device comprises a storage box, wherein a liquid inlet end of a venturi mixer is connected with a liquid inlet assembly, and the liquid inlet assembly provides pressurized liquid for the venturi mixer; the dry powder inlet end of the venturi mixer is connected with the dry powder conveying assembly, the conveying device conveys the dry powder in the storage box to the mixing cavity of the venturi mixer, and the motor of the dry powder conveying assembly is a variable frequency motor; the mixed liquid outlet end of the Venturi mixer is connected with a mixed liquid outlet pipe; the control system monitors and controls the dry powder adding amount.

The liquid inlet end of the Venturi mixer is sequentially connected with a booster pump and a liquid inlet pipe of the liquid inlet assembly.

The dry powder inlet end of the Venturi mixer is sequentially connected with the isolation valve, the conveying device and the motor of the dry powder conveying assembly, and the outlet of the storage box for containing dry powder is positioned above the conveying device.

The control system comprises a sensor and a controller; the sensor comprises a weighing sensor, a flow sensor and a pressure sensor; the controller controls the running state of the motor according to the feedback signal of the sensor.

Further, the weighing sensor is arranged at the lower end of the storage box; the flow sensor is arranged at the front end of the liquid outlet valve; the pressure sensor is arranged at the liquid outlet end of the booster pump.

Furthermore, quick-connection plugs are arranged at the end parts of the liquid inlet pipe and the liquid outlet pipe.

Further, the liquid inlet pipe is provided with a liquid inlet valve, and the mixed liquid outlet pipe is provided with a liquid outlet valve.

The adding device is of a skid-mounted structure, the liquid inlet assembly, the Venturi mixer and the mixed liquid outlet pipe are sequentially connected and fixedly mounted on a skid frame, a supporting frame is fixedly arranged on the skid frame, and the conveying device is fixedly mounted on the supporting frame.

Further, the side face of the sledge frame is fixedly provided with a lifting lug.

Further, the control system is mounted on the side of the bracket.

The utility model has the advantages of reasonable structural design, simple and convenient operation, uniform addition of dry powder through the control system, improved addition precision, small volume, skid-mounted property and the like, is convenient for component installation and maintenance, effectively improves the working efficiency of dry powder mixing, reduces energy consumption, improves production quality, reduces manual operation and improves the overall efficiency of fracturing operation.

Drawings

Fig. 1 is a schematic structural view of a venturi type dry powder adding device of the present utility model.

Fig. 2 is a left side view of fig. 1.

In the figure: 1. skid frame, 2, liquid inlet pipe, 3, booster pump, 4, isolation valve, 5, storage box, 6, conveyor, 7, motor, 8, mixed liquid outlet pipe, 9, lifting lug, 10, venturi mixer, 10-1, liquid inlet end, 10-2, dry powder inlet end, 10-3, mixed liquid outlet end, 11, control system, 12, support frame, 20, liquid inlet assembly, 30, dry powder conveying assembly.

Detailed Description

The utility model is further described below with reference to the drawings and examples. It will be appreciated by those skilled in the art that the present utility model is not limited to the specific embodiments set forth herein, but is intended to be included within the scope of the present utility model as long as the spirit of the present utility model is met.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "left", "right", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description or simplification of the description of the present utility model, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "sealed" are to be construed broadly, and for example, the connection may be a fixed connection, a removable connection, a direct connection, an indirect connection, or an integral connection; the two components can be mechanically connected, or indirectly connected through an intermediate medium, or can be communicated with each other. The seal may be an oil seal, a packing seal or other form of seal. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

See fig. 1 and 2. The utility model relates to a venturi type dry powder adding device which comprises a venturi mixer 10, a liquid inlet assembly 20, a dry powder conveying assembly 30, a storage box 5 and a control system 11.

The liquid inlet end 10-1 of the venturi mixer 10 is connected to a liquid intake assembly 20, and the liquid intake assembly 20 provides pressurized liquid to the venturi mixer 10.

The dry powder inlet end 10-2 of the venturi mixer 10 is connected with a dry powder conveying assembly 30, and the conveying device 6 conveys the dry powder in the storage box 5 to a mixing cavity of the venturi mixer 10; the motor 7 of the dry powder conveying assembly 30 is a variable frequency motor.

The mixed liquor outlet end 10-3 of the venturi mixer 10 is connected with the mixed liquor outlet pipe 8.

The control system 11 is used for monitoring and controlling the dry powder adding amount.

The liquid inlet assembly 20 comprises a liquid inlet pipe 2 and a booster pump 3, the liquid inlet end 10-1 of the venturi mixer 10, the booster pump 3 and the liquid inlet pipe 2 are sequentially connected, and liquid inlet is pressurized through the booster pump 3, so that the liquid inlet pressure is increased to the pressure required by the working condition. The liquid inlet pipe 2 is provided with a liquid inlet valve; the end part of the liquid inlet pipe 2 is provided with a quick-connection plug to realize quick connection with a liquid supply pipeline.

The dry powder conveying assembly 30 comprises an isolation valve 4, a conveying device 6 and a motor 7, wherein the dry powder inlet end 10-2 of the venturi mixer 10 is sequentially connected with the isolation valve 4, the conveying device 6 and the motor 7, and an outlet of a storage box 5 for containing dry powder is positioned above the conveying device 6. Preferably, the motor 7 is a frequency conversion integrated motor, and the frequency conversion integrated motor has stable and reliable performance and can accurately control the rotating speed. The conveying device 6 comprises a conveying pipeline and a conveyor, and the conveyor is connected with the motor 7 through a coupling; preferably, the conveyor is a closed screw conveyor. The isolation valve 4 is mounted on the dry powder delivery pipe to isolate the venturi mixer 10 from the conveyor. The dry powder delivery assembly 30 delivers dry powder from the hopper 5 into the mixing chamber of the venturi mixer 10, and the venturi mixer 10 uniformly mixes the dry powder with the liquid delivered by the liquid inlet tube.

The control system 11 comprises a sensor and a controller; the sensor comprises a weighing sensor, a flow sensor, a pressure sensor and the like. The controller controls the dry powder adding speed and the adding amount by controlling the running state of the motor 7 according to the feedback signal of the sensor. The weighing sensor is arranged at the lower end of the storage box 5 and is used for collecting and feeding back dry powder weight signals; the flow sensor is arranged at the front end of the liquid outlet valve and is used for collecting and feeding back mixed liquid flow signals; the pressure sensor is arranged at the liquid outlet end of the booster pump 3 and is used for collecting and feeding back liquid pressure signals.

The liquid outlet valve is arranged on the mixed liquid outlet pipe 8, and a quick-connection plug is arranged at the end part of the mixed liquid outlet pipe 8 to realize quick connection with a mixed liquid conveying pipeline.

Preferably, the liquid inlet valve, the liquid outlet valve and the isolation valve 4 are electric valves.

The adding device is of a skid-mounted structure, the liquid inlet assembly 20, the Venturi mixer 10 and the mixed liquid outlet pipe 8 are sequentially connected and fixedly installed on the skid frame 1, the skid frame 1 is fixedly provided with a supporting frame 12, and the conveying device 6 is fixedly installed on the supporting frame 12. The skid frame 1 is made of high-strength metal profiles, has strong bearing capacity and ensures the stability of the adding device in the working process.

Further, the side face of the sledge frame 1 is fixedly provided with the lifting lug 9, so that the sledge frame is convenient to hoist.

Further, the control system 11 is mounted on the side of the support 12.

The venturi type dry powder adding device is applied to oil field sand mixing equipment, and the working process is as follows:

Firstly, the liquid inlet pipe 2 and the mixed liquid outlet pipe 8 are respectively connected with matched equipment through flexible pipelines, a liquid inlet valve and a liquid outlet valve are opened, liquid inlet enters the booster pump 3 through the liquid inlet pipe 2, the booster pump 3 pressurizes liquid to required working condition pressure, and the pressurized liquid enters the Venturi mixer 10.

When the control system 11 monitors that the liquid pressure reaches a stable state, the isolation valve 4 is opened, dry powder flows out of the storage box 5 and enters the conveying device 6, the dry powder is conveyed to the Venturi mixer 10 by the conveying device 6, meanwhile, the control system 11 monitors the adding amount of the dry powder, and the motor 7 is controlled by the controller, so that the accurate control and adjustment of the adding of the dry powder are realized.

In the mixing cavity of the venturi mixer 10, the dry powder and the liquid are uniformly mixed, and the mixed liquid is conveyed into a pipeline of the sand mixing equipment through a liquid outlet pipe and is uniformly mixed with the fracturing liquid again, so that the requirement of fracturing operation is met.

The utility model has the following advantages and beneficial effects:

1. Accurate control and regulation: the control system composed of the sensor, the controller, the display and the like is adopted, so that the addition amount of the dry powder can be monitored in real time, the accurate addition amount of the dry powder is ensured to be correct through accurate control and adjustment, the production quality of the sand mixing equipment can be effectively improved, and the condition that the dry powder is excessively added or excessively reduced is avoided.

2. And (3) improving the adding precision: through the accurate control and adjustment of the control system, the addition amount of the dry powder can be accurately controlled, the dry powder addition precision is improved, the production process of the sand mixing equipment is more stable and reliable, errors and waste in production are reduced, and the product quality and production efficiency are improved.

3. Small volume, simple operation and skid-mounted: the structure is compact, the occupied space is small, and the installation and the layout are convenient; meanwhile, the operation is simple and convenient, parameter setting and monitoring are only needed through the control system, the complexity and the complexity of manual operation are reduced, and the convenience and the efficiency of the operation are improved.

4. The device is suitable for oilfield sand mixing equipment of different scales and types: the design is nimble, can customize according to the oil field sand mixing equipment of different scales and types, no matter be small-size portable sand mixing equipment, or large-scale fixed sand mixing equipment, the device can both be adapted and applied, improves the adaptability and the flexibility of equipment.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.

Claims

1. A venturi type dry powder adding device comprises a storage box and is characterized in that:

The liquid inlet end of the Venturi mixer is connected with the liquid inlet assembly, and the liquid inlet assembly provides pressurized liquid for the Venturi mixer; the dry powder inlet end of the venturi mixer is connected with the dry powder conveying assembly, the conveying device conveys the dry powder in the storage box to the mixing cavity of the venturi mixer, and the motor of the dry powder conveying assembly is a variable frequency motor; the mixed liquid outlet end of the Venturi mixer is connected with a mixed liquid outlet pipe; the control system monitors and controls the dry powder adding amount.

2. The venturi dry powder addition device of claim 1, wherein: the liquid inlet end of the Venturi mixer is sequentially connected with a booster pump and a liquid inlet pipe of the liquid inlet assembly.

3. The venturi dry powder addition device of claim 2, wherein: the dry powder inlet end of the Venturi mixer is sequentially connected with the isolation valve, the conveying device and the motor of the dry powder conveying assembly, and the outlet of the storage box for containing dry powder is positioned above the conveying device.

4. A venturi dry powder addition device according to claim 3, wherein:

the control system comprises a sensor and a controller;

The sensor comprises a weighing sensor, a flow sensor and a pressure sensor; the controller controls the running state of the motor according to the feedback signal of the sensor.

5. The venturi dry powder addition device of claim 4, wherein: the weighing sensor is arranged at the lower end of the storage box; the flow sensor is arranged at the front end of the liquid outlet valve; the pressure sensor is arranged at the liquid outlet end of the booster pump.

6. The venturi dry powder addition device of claim 1, wherein: the end parts of the liquid inlet pipe and the liquid outlet pipe are provided with quick-connection plugs.

7. The venturi dry powder addition device of claim 6, wherein: the liquid inlet valve is arranged on the liquid inlet pipe, and the liquid outlet valve is arranged on the mixed liquid outlet pipe.

8. The venturi dry powder addition device according to any one of claims 1-7, wherein: the adding device is of a skid-mounted structure, the liquid inlet assembly, the Venturi mixer and the mixed liquid outlet pipe are sequentially connected and fixedly mounted on a skid frame, a supporting frame is fixedly arranged on the skid frame, and the conveying device is fixedly mounted on the supporting frame.

9. The venturi dry powder addition device of claim 8, wherein: lifting lugs are fixedly arranged on the side faces of the skid frames.

10. The venturi dry powder addition device of claim 9, wherein: the control system is arranged on the side face of the bracket.