Self-adaptive sand conveying test platform

Abstract

The utility model discloses a self-adaptive sand conveying test platform, which relates to the technical field of petroleum and coal mine, and comprises an elevator, a sand storage tank, a sand conveying device, a sand conveying support, a sand pouring tank, a conveyor and a controller, sand is input into the sand storage tank through the elevator, is discharged from the sand storage tank, then enters the sand conveying device and is conveyed into the sand pouring tank, and the conveyor is connected with the controller. The sand conveying equipment is fixed on the sand conveying support, then the sand is discharged from the sand pouring tank, enters the conveyor and is conveyed to the elevator to form a closed loop, and outlets of the sand storage tank and the sand pouring tank are provided with adjustable sand discharging gates which are electrically connected with the controller. The controller can adjust the opening degree of the sand discharging gate, control the lifting speed of the lifting machine and control the conveying speed of the conveyor. According to the utility model, the self-adaptive balance of the adjustable sand conveying equipment on the whole system under the condition of a certain sand conveying amount can be realized, the parameters of the sand inlet amount, the sand conveying amount and the sand adding amount in a balance state can be tested, and excessive power consumption is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum and coal mines, and more specifically to an adaptive sand transport test platform. Background Art

[0002] Sand is a common substance on the market, and is often used in petroleum engineering and coal mining. In petroleum engineering, it is mainly used for oil fracturing and sanding, the purpose of which is to inject high-pressure fluid into the formation, so that the formation forms cracks under the action of high pressure, thereby establishing oil and gas seepage channels, reducing the flow resistance of oil and gas entering the wellbore, and improving the recovery rate; the role of sand in coal mining is similar to that in petroleum engineering, both of which are to improve gas recovery. No matter which aspect of the application, it requires precise control of the sand delivery of the sand delivery equipment.

[0003] The prior art publication number CN104477629A discloses a sand transport test device and method, which achieves the effect of accurately controlling the transport volume, but does not mention the adaptive control of the sand input volume, sand delivery volume, and sand addition volume to achieve a balance between them. Any excess parameter will cause energy waste, or "sand blockage" or "stuck" situations. Utility Model Content

[0004] In order to overcome the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide an adaptive sand conveying test platform, which can realize the adaptive balance of the entire system of the adjustable sand conveying equipment under a certain sand conveying amount condition, and test the parameters of the sand input amount, sand delivery amount and sand addition amount under the equilibrium state to avoid excessive power consumption.

[0005] In order to achieve the above objectives, the technical solution adopted by the utility model is:

[0006] An adaptive sand conveying test platform comprises an elevator, a sand storage tank, a sand conveying device, a sand conveying support, a sand pouring tank, a conveyor and a controller. Sand is input into the sand storage tank via the elevator, discharged from the sand storage tank and then enters the sand conveying device to be transported to the sand pouring tank. The sand conveying device is fixed on the sand conveying support, and then released from the sand pouring tank into the conveyor and transported to the elevator, forming a closed-loop system.

[0007] The outlets of the sand storage tank and the sand pouring tank are both provided with adjustable sand discharge gates, and the sand discharge gates are electrically connected to the controller.

[0008] The controller can adjust the opening of the sand release gate, control the lifting speed of the elevator and control the conveying speed of the conveyor.

[0009] Preferably, a weighing sensor is provided at the bottom of the sand pouring tank, and the weighing sensor is electrically connected to the controller.

[0010] Preferably, a frequency converter is provided to be connected to the sand conveying equipment, the driving power of the sand conveying equipment is in the form of variable frequency drive, and the frequency converter and the controller are electrically connected.

[0011] Preferably, the elevator is provided with three different types of sand outlets according to the diameter of the transported sand.

[0012] Preferably, the sand transport bracket can adjust the angle and the connection diameter of the fixed sand transport equipment.

[0013] Beneficial effects of the utility model:

[0014] 1. Compared with the existing technology, a controller is designed to control the sand input, sand delivery and sand addition of the test platform. When a certain target demand is determined, other conveying data can be changed according to the target demand to achieve a state of balance among the three, avoiding waste caused by excessive energy consumption. For example, when the speed of the sand conveying equipment is taken as the target, in order to achieve the sand conveying amount under a certain speed, the speed of the sand conveying equipment is reduced or increased, and the frequency converter will change the driving power of the sand conveying equipment, and then transmit the signal to the controller. The controller will close or open the valve of the sand pouring tank, reduce or accelerate the speed of the elevator and the conveyor, and at the same time close or open the valve of the sand storage tank, so as to adaptively adjust the sand conveying amount under the specified speed to achieve a balance between sand feeding, sand conveying and sand adding in each system; when the specified sand feeding amount is input, the weighing sensor installed at the bottom of the sand pouring tank transmits the weight signal to the controller, and the controller will close or open the valve of the sand storage tank, reduce or accelerate the speed of the elevator and the conveyor, and at the same time close or open the valve of the sand storage tank, so as to adaptively adjust the sand conveying amount under the specified situation to achieve a balance between sand feeding, sand conveying and sand adding in each system.

[0015] 2. In the utility model, the elevator is provided with three types of sand outlets according to the diameter of the transported sand, which can meet the needs of transporting three types of sand and can adapt to sand transport tasks in more environments.

[0016] 3. The test platform provided by the utility model has a simple structure, is easy to install and maintain, has a high sand reuse rate, and can greatly save test costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a flow chart of a controller according to an embodiment of the present utility model;

[0019] Figure 3 This is a flow chart of a controller according to an embodiment of the present utility model;

[0020] Reference numerals:

[0021] 1. Elevator; 2. Sand storage tank; 3. Sand conveying equipment; 4. Sand conveying bracket; 5. Sand pouring tank; 6. Conveyor; 7. Control device. DETAILED DESCRIPTION

[0022] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, features and effects of the present invention.

[0023] like Figure 1 As shown, the utility model provides an adaptive sand conveying test platform, including a hoist 1, a sand storage tank 2, a sand conveying device 3, a sand conveying support 4, a sand pouring tank 5, a conveyor 6 and a controller 7. Sand is input into the sand storage tank 2 via the hoist 1, discharged from the sand storage tank 2 and then enters the sand conveying device 3 to be transported to the sand pouring tank 5. The sand conveying device 3 is fixed on the sand conveying support 4, and then released from the sand pouring tank 5 into the conveyor 6 and transported to the hoist 1, forming a closed-loop system with a simple structure, convenient installation and maintenance, high sand reuse rate, and can greatly save test costs.

[0024] The outlets of the sand storage tank 2 and the sand pouring tank 5 are both provided with adjustable sand discharge gates, and the sand discharge gates are electrically connected to the controller 7 .

[0025] The controller 7 can adjust the opening of the sand release gate, control the lifting speed of the elevator 1 and control the conveying speed of the conveyor 6.

[0026] like Figure 2 As shown, when the rotation speed of the sand conveying equipment 3 is taken as the target, the sand conveying amount under a certain speed is achieved, the rotation speed of the sand conveying equipment 3 is reduced or increased, the frequency converter will change the driving power of the sand conveying equipment 3, and then transmit the signal to the controller 7, the controller 7 closes or opens the valve of the sand pouring tank 5, reduces or accelerates the speed of the elevator 1 and the conveyor 6, and at the same time closes or opens the valve of the sand storage tank 2, thereby adaptively adjusting the sand conveying amount under the specified speed, and achieving a balance between sand feeding, sand conveying and sand adding in each system.

[0027] like Figure 3 As shown, when the specified sand delivery amount is input, the weighing sensor installed at the bottom of the sand pouring tank 5 transmits the weight signal to the controller 7, and the controller 7 closes or opens the valve of the sand storage tank 2, reduces or accelerates the speed of the elevator 1 and the conveyor 6, and at the same time closes or opens the valve of the sand storage tank 2, thereby adaptively adjusting the sand delivery amount under the specified conditions to achieve a balance of sand feeding, sand delivery and sand addition in each system. Further, a weighing sensor is provided at the bottom of the sand pouring tank 5, and the weighing sensor is electrically connected to the controller 7.

[0028] The weighing sensor arranged at the bottom of the sand pouring tank 5 can convert the weight of the sand into a signal, and then transmit it to the controller.

[0029] Furthermore, a frequency converter is provided to be connected to the sand conveying equipment 3 , and the driving power of the sand conveying equipment 3 is in the form of variable frequency drive. The frequency converter 3 and the controller 7 are electrically connected, and the driving signal of the frequency converter will be transmitted to the controller 7 .

[0030] Furthermore, the elevator 1 is provided with three different types of sand outlets according to the diameter of the transported sand, and the multiple sand delivery outlets can transport different types of sand.

[0031] Furthermore, the sand conveying bracket 4 can adjust the angle, and can also adjust the connection diameter of the fixed sand conveying device 3, so that the installation condition of the sand conveying device 3 can be adjusted to adapt to different installation conditions in actual applications.

[0032] In order to better understand the present invention, the following is a complete description of the working principle of the present invention:

[0033] An adaptive sand conveying test platform comprises an elevator 1, a sand storage tank 2, a sand conveying device 3, a sand conveying support 4, a sand pouring tank 5, a conveyor 6 and a controller 7. Sand is input into the sand storage tank 2 via the elevator 1, discharged from the sand storage tank 2 and then enters the sand conveying device 3 to be transported to the sand pouring tank 5. The sand conveying device 3 is fixed on the sand conveying support 4, and then discharged from the sand pouring tank 5 to enter the conveyor 6 for transportation to the elevator 1, forming a closed-loop system.

[0034] For example, when the rotation speed of the sand conveying equipment 3 is taken as the target, in order to achieve the sand conveying amount under a certain speed, the rotation speed of the sand conveying equipment 3 is reduced or increased, and the frequency converter will change the driving power of the sand conveying equipment 3, and then transmit the signal to the controller 7. The controller 7 closes or opens the valve of the sand pouring tank 5, reduces or accelerates the speed of the elevator 1 and the conveyor 6, and at the same time closes or opens the valve of the sand storage tank 2, thereby adaptively adjusting the sand conveying amount under the specified rotation speed to achieve a balance among the sand feeding, sand conveying and sand adding of each system.

[0035] When the specified sand delivery amount is input, the weighing sensor installed at the bottom of the sand tank 5 transmits the weight signal to the controller 7, and the controller 7 closes or opens the valve of the sand storage tank 2, reduces or accelerates the speed of the elevator 1 and the conveyor 6, and at the same time closes or opens the valve of the sand storage tank 2, thereby adaptively adjusting the sand delivery amount under the specified conditions to achieve a balance among the sand feeding, sand delivery and sand adding of each system.

[0036] The implementation methods of the present invention are described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An adaptive sand transport test platform, characterized by: The invention comprises an elevator (1), a sand storage tank (2), a sand conveying device (3), a sand conveying support (4), a sand dumping tank (5), a conveyor (6) and a controller (7). Sand is input into the sand storage tank (2) via the elevator (1), discharged from the sand storage tank (2), and then enters the sand conveying device (3) to be transported to the sand dumping tank (5). The sand conveying device (3) is fixed on the sand conveying support (4), and then discharged from the sand dumping tank (5) to enter the conveyor (6) to be transported to the elevator (1), forming a closed-loop system. The outlets of the sand storage tank (2) and the sand dumping tank (5) are both provided with adjustable sand discharge gates, and the sand discharge gates are electrically connected to the controller (7); The controller (7) can adjust the opening of the sand release gate, control the lifting speed of the elevator (1) and control the conveying speed of the conveyor (6).

2. An adaptive sand transport test platform as claimed in claim 1, characterized in that: A weighing sensor is arranged at the bottom of the sand pouring tank, and the weighing sensor is electrically connected to the controller (7).

3. An adaptive sand transport test platform as claimed in claim 1, characterized in that: A frequency converter is provided and connected to the sand conveying device (3); the driving power of the sand conveying device (3) is in the form of a variable frequency drive; and the frequency converter and the controller are electrically connected.

4. The adaptive sand transport test platform according to claim 1, characterized in that: The elevator (1) is provided with three different types of sand outlets according to the diameter of the sand to be transported.

5. The adaptive sand transport test platform according to claim 1, characterized in that: The sand transport support (4) can adjust the angle and can also adjust the connection diameter of the fixed sand transport device (3).

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