Fracturing propping agent quartz sand lifting device

Abstract

The utility model relates to a fracturing propping agent quartz sand lifting device which comprises a three-section type lifting frame which is divided into a high-position horizontal section, an inclined section and a low-position horizontal section, chain discs are rotationally connected to the two ends of the lifting frame, chains are meshed with the chain discs, hoppers are rotationally connected to the chains, and supporting wheels are arranged at the bottoms of the hoppers. A closed-loop guide rail is fixedly connected to the lifting frame, the guide rail is horizontally arranged on the high-position horizontal section and the low-position horizontal section, the guide rail is obliquely arranged on the oblique section, the supporting wheels always move along the guide rail, and when the supporting wheels move upwards on the guide rail on the oblique section, the top of the hopper is supported to be always horizontal. According to the fracturing propping agent quartz sand lifting device, the chains are used for driving the hoppers to operate on the lifting frame, the hoppers are always in a horizontal state when ascending on the lifting frame through cooperation of the guide rails and the supporting wheels, the hoppers can be fully loaded during loading, the hoppers are always horizontal during operation, and scattering is avoided; the lifting efficiency of the quartz sand is improved.

Description

Technical Field

[0001] This utility model relates to a lifting device, and more particularly to a lifting device for fracturing proppant quartz sand. Background Technology

[0002] In deep oil and gas well extraction, high-closure-pressure, low-permeability deposits undergo fracturing treatment to break open oil and gas-bearing rock formations. Oil and gas converge from the channels formed by the fractures. At this point, fluid needs to be injected into the rock base layer at pressures exceeding the formation's fracturing strength to create fractures in the surrounding rock formations, forming a channel with high-level flow capacity. To keep the fractures open after fracturing and allow oil and gas products to pass smoothly, fracturing proppant is injected into the formation along with the high-pressure solution to fill the rock fractures. This proppant prevents the fractures from closing due to stress release, thus maintaining high conductivity, ensuring smooth oil and gas flow, and increasing production. Currently, the most commonly used fracturing proppant is quartz sand proppant. The existing process for preparing quartz sand proppant involves sequentially screening, washing, dehydrating, drying, and packaging the extracted quartz sand for storage. The quartz sand needs to be vertically lifted between these processes.

[0003] Existing quartz sand lifting devices mostly use chain bucket elevators. Due to the high fluidity of quartz sand, the buckets are usually not fully loaded. At the same time, if the buckets are tilted slightly during lifting, quartz sand will be spilled, increasing unnecessary workload and resulting in low lifting efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a fracturing proppant quartz sand lifting device to solve the problems of existing quartz sand lifting devices, which mostly use chain bucket elevators. Due to the high fluidity of quartz sand, the buckets are usually not fully loaded. At the same time, if the buckets are tilted slightly during lifting, quartz sand will be spilled, increasing unnecessary workload and resulting in low lifting efficiency.

[0005] To address the aforementioned problems, this utility model provides a fracturing proppant quartz sand lifting device, comprising a three-section lifting frame consisting of a high-level horizontal section, an inclined section, and a low-level horizontal section. Chains are rotatably connected to both ends of the lifting frame, with chains meshing on the chains. A hopper is rotatably connected to the chain, and a support wheel is provided at the bottom of the hopper. A closed-loop guide rail is fixedly connected to the lifting frame. The guide rail is horizontally arranged in the high-level and low-level horizontal sections, and inclined in the inclined section. The support wheel always moves along the guide rail, and when the support wheel moves upward along the guide rail in the inclined section, the top of the support hopper remains horizontal.

[0006] The fracturing proppant quartz sand lifting device provided by this utility model also has the following technical features:

[0007] Furthermore, the chain is equipped with guide wheels at the inside corners where the high horizontal section, low horizontal section and inclined section connect. The guide wheels are rotatably connected to brackets, and the brackets are fixedly connected to the lifting frame.

[0008] Furthermore, the hopper has a triangular cross-section, and one corner of the top of the hopper is rotatably connected to the chain.

[0009] Furthermore, the chain includes a chain post and chain link plates, the chain post being rotatably connected to the chain link plates, and the chain post being rotatably connected to the hopper.

[0010] Furthermore, a pulley is fixedly connected to the chain, a base is fixedly connected to the lifting frame, a motor is fixedly connected to the base, a drive wheel is fixedly connected to the drive shaft of the motor, and the drive wheel and the pulley are driven by a belt.

[0011] Furthermore, the guide rail has a rail groove in the downward direction of the high horizontal section, low horizontal section and inclined section, and a rail plate in the upward direction of the inclined section.

[0012] This utility model has the following beneficial effects: by using a chain to drive the bucket to run on the lifting frame, and through the cooperation of the guide rail and support wheel, the bucket is always in a horizontal state when it moves upward on the lifting frame, so that the bucket can be fully loaded during loading, and the bucket is always horizontal during operation to avoid spillage, thereby improving the lifting efficiency of quartz sand. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the fracturing proppant quartz sand lifting device according to an embodiment of the present invention;

[0014] Figure 2 The fracturing proppant quartz sand lifting device is an embodiment of this utility model. Figure 1 Enlarged view of node A in the middle;

[0015] Figure 3 The fracturing proppant quartz sand lifting device is an embodiment of this utility model. Figure 1 Enlarged view of node B in the middle;

[0016] Figure 4 This is a front cross-sectional view of the fracturing proppant quartz sand lifting device according to an embodiment of the present invention;

[0017] Figure 5 The fracturing proppant quartz sand lifting device is an embodiment of this utility model. Figure 4 Enlarged view of node C in the middle.

[0018] (1-Lifting frame, 2-Chain disc, 3-Chain, 4-Hopper, 5-Support wheel, 6-Guide rail, 7-Guide wheel, 8-Bracket, 9-Pulley, 10-Base, 11-Motor, 12-Drive wheel, 13-Belt, 31-Chain column, 32-Chain link plate, 61-Rail groove, 62-Rail plate, 101-High-level horizontal section, 102-Inclined section, 103-Low-level horizontal section) Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0020] like Figures 1 to 5 In the embodiment of the fracturing proppant quartz sand lifting device of the present invention shown, the fracturing proppant quartz sand lifting device includes a three-section lifting frame 1, namely a high-level horizontal section 101, an inclined section 102 and a low-level horizontal section 103. The two ends of the lifting frame 1 are rotatably connected to a chain 2, a chain 3 is engaged on the chain 2, and a hopper 4 is rotatably connected to the chain 3. The bottom of the hopper 4 is provided with a support wheel 5. A closed-loop guide rail 6 is fixedly connected to the lifting frame 1. The guide rail 6 is arranged horizontally in the high-level horizontal section 101 and the low-level horizontal section 103, and is arranged inclinedly in the inclined section 102. The support wheel 5 always moves along the guide rail 6. When the support wheel 5 moves upward along the guide rail 6 in the inclined section 102, the top of the support hopper 4 is always horizontal.

[0021] Specifically, when hopper 4 reaches the low horizontal section 103, quartz sand is injected into hopper 4, causing the chain 2 to rotate and drive the chain 3 to run. The chain 3 drives hopper 4 to continue moving forward. When hopper 4 reaches the inclined section 102, the guide rail 6 tilts earlier than the chain 3 and hopper 4. When hopper 4 enters the inclined section 102, the guide rail 6 supports the support wheel 5, causing hopper 4 to rotate, ensuring that the top of hopper 4 remains horizontal. At the end of the high horizontal section 101, hopper 4 continues to move forward with the chain 3. The guide rail 6 flips over, emptying the quartz sand in the hopper 4. The empty hopper 4 then descends to the low horizontal section 103 along with the chain 3 and guide rail 6, and the cycle repeats. The chain 3 drives the hopper 4 to run on the lifting frame 1. The cooperation of the guide rail 6 and support wheel 5 ensures that the hopper 4 remains horizontal when moving upward on the lifting frame 1. This allows the hopper 4 to be fully loaded during loading and keeps it horizontal during operation to prevent spillage and improve the lifting efficiency of the quartz sand.

[0022] In one embodiment of this application, preferably, a guide wheel 7 is provided at the inside corner where the chain connects the high horizontal section 101, the low horizontal section 103 and the inclined section 102. The guide wheel 7 is rotatably connected to a bracket 8, which is fixedly connected to the lifting frame 1 to guide the chain 3 to run along the three sections of the lifting frame 1.

[0023] In one embodiment of this application, preferably, the cross-section of the hopper 4 is triangular, and one corner of the top of the hopper 4 is rotatably connected to the chain 3, so that the hopper 4 rotates around one corner when the guide rail 6 lifts the support wheel 5, thereby keeping the top of the hopper 4 in a horizontal position.

[0024] In one embodiment of this application, preferably, the chain 3 includes a chain post 31 and a chain link plate 32, the chain post 31 is rotatably connected to the chain link plate 32, and the chain post 31 is rotatably connected to the hopper 4, so as to enable the chain 3 to drive the hopper 4 to run, and at the same time enable the hopper 4 to rotate around the chain post 31.

[0025] In one embodiment of this application, preferably, a pulley 9 is fixedly connected to the chain disc 2, a base 10 is fixedly connected to the lifting frame 1, a motor 11 is fixedly connected to the base 10, a drive wheel 12 is fixedly connected to the drive shaft of the motor 11, and the drive wheel 12 is driven by the pulley 9 through the belt 13 to drive the chain disc 2 to rotate, thereby driving the chain 3 to drive the hopper 1 to run on the lifting frame 1; the motor 11 is a variable frequency motor or a motor-adapted reducer (not shown in the figure), the reducer is prior art and will not be described in detail.

[0026] In one embodiment of this application, preferably, the guide rail 6 has a groove 61 in the downward direction of the high horizontal section 101, the low horizontal section 103 and the inclined section 102, and a rail plate 62 in the upward direction of the inclined section 102. When the hopper 4 moves upward, the support wheel 5 is always pressed on the guide rail 6 under the action of the goods in the hopper 4 and the weight of the hopper 4, without the need for bidirectional limiting. The groove 61 is used to prevent the support wheel 5 of the hopper 4 from falling off the guide rail 6 under its own weight when moving downward, so as to satisfy the need to add bidirectional limiting to the support wheel 5.

[0027] In summary, the fracturing proppant quartz sand lifting device in the above embodiments of this utility model specifically involves the following steps: When the hopper 4 reaches the low horizontal section 103, quartz sand is injected into the hopper 4, causing the chain disc 2 to rotate and drive the chain 3 to run. The chain 3 then drives the hopper 4 to continue moving forward. When the hopper 4 reaches the inclined section 102, the guide rail 6 tilts earlier than the chain 3 and the hopper 4. When the hopper 4 enters the inclined section 102, the guide rail 6 supports the support wheel 5, causing the hopper 4 to rotate, ensuring that the top of the hopper 4 remains horizontal. At the end of the high-level horizontal section 101, the chain 3 and guide rail 6 flip, emptying the quartz sand in the hopper 4. The empty hopper 4 then descends to the low-level horizontal section 103 along with the chain 3 and guide rail 6, and the cycle repeats. The chain 3 drives the hopper 4 to run on the lifting frame 1. The guide rail 6 and support wheel 5 work together to keep the hopper 4 horizontal as it moves upward on the lifting frame 1. This allows the hopper 4 to be fully loaded during loading and keeps it horizontal during operation to prevent spillage and improve the lifting efficiency of the quartz sand.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for lifting quartz sand proppant used in fracturing, characterized in that, The device includes a three-section lifting frame: a high-level horizontal section, an inclined section, and a low-level horizontal section. Chains are rotatably connected to both ends of the lifting frame, and chains are engaged on the chain. A hopper is rotatably connected to the chain, and a support wheel is provided at the bottom of the hopper. A closed-loop guide rail is fixedly connected to the lifting frame. The guide rail is horizontally arranged in the high-level and low-level horizontal sections, and inclined in the inclined section. The support wheel always moves along the guide rail, and when the support wheel moves upward along the guide rail in the inclined section, it ensures that the top of the hopper remains horizontal.

2. The fracturing proppant quartz sand lifting device according to claim 1, characterized in that: The chain has guide wheels at the inside corners where the high horizontal section, low horizontal section and inclined section connect. The guide wheels are rotatably connected to the brackets, and the brackets are fixedly connected to the lifting frame.

3. The fracturing proppant quartz sand lifting device according to claim 1, characterized in that: The hopper has a triangular cross-section, and one of its top corners is rotatably connected to the chain.

4. The fracturing proppant quartz sand lifting device according to claim 3, characterized in that: The chain includes chain posts and chain links, the chain posts being rotatably connected to the chain links and the chain posts being rotatably connected to the hopper.

5. The fracturing proppant quartz sand lifting device according to claim 1, characterized in that: A pulley is fixedly connected to the chain wheel, a base is fixedly connected to the lifting frame, a motor is fixedly connected to the base, a drive wheel is fixedly connected to the drive shaft of the motor, and the drive wheel and the pulley are driven by a belt.

6. The fracturing proppant quartz sand lifting device according to claim 1, characterized in that: The guide rail has a groove in the downward direction of the high horizontal section, low horizontal section and inclined section, and a plate in the upward direction of the inclined section.

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