Wet fracturing sand conveying device

Abstract

The utility model provides a wet fracturing sand conveying device which comprises a first conveying assembly and a second conveying assembly which are connected with each other, the first conveying assembly comprises a first buffering device and a first conveying device, and the first conveying device is used for connecting the first buffering device and sand mixing equipment. The second conveying assembly comprises a second buffering device and a second conveying device, the second conveying device is used for connecting the second buffering device and the first buffering device, and the first buffering device and the second buffering device are used for conducting stage treatment on wet fracturing sand. According to the embodiment of the utility model, the wet fracturing sand can be subjected to various treatments such as vibration, stirring and the like in the transportation process of the wet fracturing sand, so that the condition that the wet fracturing sand is gathered due to lower water content is avoided, and the effect of subsequent fracturing operation is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of fracturing sand conveying, specifically to a wet fracturing sand conveying device. Background Technology

[0002] The oil and gas industry commonly uses hydraulic fracturing to increase the production of hydrocarbon production wells, such as oil and gas wells. Hydraulic fracturing, sometimes called "fracking" or "water fracturing," is the process of injecting fracturing fluid into the wellbore. Fracturing fluid is typically a mixture of water, proppant (such as sand, fracturing sand, ceramics, etc.), and chemicals to disrupt underground geological structures and release hydrocarbon reserves. Fracturing fluid is pumped into the wellbore at sufficient pressure to create fractures in the underground geological structure. Once inside the wellbore, the pressurized fracturing fluid flows into the underground geological formation, fracturing it. Fracturing fluid may include water, various chemical additives, and proppants to facilitate the extraction of hydrocarbon reserves such as oil and gas. Proppants, such as fracturing sand, prevent the closure of fractures and fractures in the underground formation, keeping the formation open so that oil and gas reserves can flow to the surface.

[0003] Hydraulic fracturing typically uses large quantities of sand (e.g., approximately 6,000 to 7,000 tons per well) to aid in well fracturing. Before being transported to the well site, the sand undergoes processing: (1) removal of impurities; (2) drying the fracturing sand to meet fracturing transport requirements; and (3) adapting it for metering into a mixing process using conventionally employed hydraulic fracturing equipment (e.g., fracturing mixers) to produce slurry or fracturing fluid. Mining and / or processing operators initially extract fracturing sand from sand deposits containing quartz particles with desired properties (e.g., relatively high crushing strength and roundness). To meet fracturing criteria, operators process the extracted sand by washing it to remove impurities and subsequently drying it to remove moisture. Mining operators may then further filter out sand particles that do not meet specific size criteria for fracturing operations. Once processing is complete, operators load and transport the fracturing sand to the well site, which may be hundreds of kilometers from its origin, using specialized railcars, trailers (e.g., hopper trailers and pneumatic containers), and trucks that protect the fracturing sand from environmental exposure. Operators store dry fracturing sand at various points along the supply chain using silos, dome silos, and other large and expensive storage containers. Keeping fracturing sand dry before mixing it to form fracturing fluid increases the operator's ability to reliably control and meter the flow of fracturing sand. In contrast, wet fracturing sand often clumps together, resulting in less consistent flow and greater difficulty in metering it for fracturing purposes. However, drying, transporting, and storing large quantities of dry fracturing sand increases the financial, operational, and logistical costs associated with fracturing operations.

[0004] Conventional fracturing sand mixing equipment is equipped with an auger device. The dry fracturing sand is transported from sand trucks or storage tanks to the mixing tank of the sand mixing equipment through spiral motion. Generally, fracturing sand has a certain moisture content. If the moisture content of the wet fracturing sand is high, it can be transported by the auger because of its good fluidity. However, if the moisture content of the wet fracturing sand is low, its poor fluidity causes it to easily clump together. Therefore, when the auger blades rotate in a confined space, there is a possibility that the auger blades will get stuck or blocked, affecting the fracturing and fracturing sand operation. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a wet fracturing sand conveying device to solve the problem in the prior art that when the water content of the wet fracturing sand is low, the wet fracturing sand has poor fluidity and tends to agglomerate, which affects the fracturing and fracturing sand operation.

[0006] To address the aforementioned technical problems, embodiments of this utility model provide a wet fracturing sand conveying device, comprising a first conveying component and a second conveying component arranged sequentially. The first conveying component includes a first buffer device and a first conveying device, the first conveying device being used to connect the first buffer device and a sand mixing device. The second conveying component includes a second buffer device and a second conveying device, the second conveying device being used to connect the second buffer device and the first buffer device. The first buffer device and the second buffer device are used to perform grading treatment on the wet fracturing sand.

[0007] In some embodiments, the first conveying device includes a first base, on which a first conveying unit and a first lifting device are disposed. The first conveying unit is inclined, and a first position of the first conveying unit corresponds to the outlet of the first buffer device. A first unloading device is disposed at a second position of the first conveying unit. One end of the first lifting device is connected to the first base, and the other end of the first lifting device is connected to the first conveying unit to adjust the tilt angle of the first conveying unit.

[0008] In some embodiments, the second conveying device includes a second base, on which a second conveying unit and a second lifting device are disposed. The second conveying unit is inclined, and a first position of the second conveying unit corresponds to the outlet of the second buffer device. A second unloading device connected to the first buffer device is disposed at its second end. One end of the second lifting device is connected to the second base, and the other end of the second lifting device is connected to the second conveying unit to adjust the tilt angle of the second conveying unit.

[0009] In some embodiments, the second conveying device is a belt conveying device, and the second conveying unit includes a first belt section and a second belt section. The first belt section is disposed on the second base and is arranged parallel to the second base. The second belt section is inclined relative to the second base. The first end of the second belt section is connected to the first belt section, and its second end can be raised by the second lifting device.

[0010] In some embodiments, the first conveying device and / or the second conveying device further include a weighing component for weighing wet fracturing sand.

[0011] In some embodiments, there are multiple second conveying components, and the second conveying devices of the multiple second conveying components are all connected to the first buffer device.

[0012] In some embodiments, the first buffer device and / or the second buffer device have at least one function of vibration, filtration and stirring.

[0013] In some embodiments, the first buffer device includes a frame, on which a hopper assembly is disposed. The hopper assembly includes a hopper frame and a hopper body. The bottom of the hopper body has a discharge port. A gate for closing the discharge port is disposed on the inner side of the discharge port. The hopper frame is disposed on the upper surface of the frame. An elastic element is disposed between the hopper frame and the frame. A moisture measuring device for measuring the water content of wet fracturing sand is disposed on the inner side of the hopper body.

[0014] In some embodiments, a filter device and a first stirring device are provided inside the hopper body, a motor is provided on the hopper frame, the motor is connected to the elastic element and the first stirring device, the wet fracturing sand also includes a bulk material recovery device, and a conveying scraper is provided on the hopper body.

[0015] In some embodiments, a second stirring device is provided within the second buffer device.

[0016] This invention enables the wet fracturing sand to undergo various treatments such as vibration and stirring during transportation to prevent the wet fracturing sand from agglomerating due to its low moisture content, thereby improving the effectiveness of subsequent fracturing operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the arrangement of a wet fracturing sand conveying device provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the second conveying component in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the first conveying component in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the first buffer device in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0022] Figure 5 One of the schematic diagrams of the layout of an operating system for a wet fracturing sand well site provided in another embodiment of the present invention;

[0023] Figure 6 This is one of the schematic diagrams showing the layout of an operating system for wet fracturing sand well sites, provided as another embodiment of the present invention.

[0024] Figure label:

[0025] 1-First conveying assembly; 2-Second conveying assembly; 11-First buffer device; 111-Frame; 112-Hopper frame; 113-Hopper body; 114-Elastic element; 115-Motor; 116-Moisture measuring device; 117-First mixing device; 118-Gate; 119-Bulk material recovery device; 12-First conveying device; 121-First base; 122-First conveyor belt; 123-First unloading device; 124-First lifting device; 125-First belt scale; 21-Second buffer device; 211-Second mixing device; 22-Second conveying device; 221-Second base; 222-Second conveyor belt; 2221-First belt section; 2222-Second belt section; 223-Second unloading device; 224-Second lifting device; 225-Second belt scale; 100-Wet fracturing sand conveying device; 200-Transportation device; 300-Sand mixing equipment. Detailed Implementation

[0026] Various embodiments and features of this utility model are described herein with reference to the accompanying drawings.

[0027] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this invention will be apparent to those skilled in the art.

[0028] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, serve to explain the principles of the present invention.

[0029] These and other features of the present invention will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0030] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the present invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0031] The above and other aspects, features and advantages of the present invention will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0032] Specific embodiments of the present invention will now be described with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present invention, which may be implemented in various ways. Well-known and / or repeated functions and structures have not been described in detail to avoid unnecessary or redundant details that could obscure the present invention. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of substantially any suitable detailed structures.

[0033] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to the present invention.

[0034] The first embodiment of this utility model provides a wet fracturing sand conveying device, which includes a first conveying component and a second conveying component. The first conveying component and the second conveying component are interconnected. The second conveying component can receive wet fracturing sand conveyed by an external transport device, and after primary processing, the wet fracturing sand is conveyed to the second conveying component. After fine processing, the second conveying component conveys the wet fracturing sand to a sand mixing device.

[0035] Furthermore, the second conveying component can be one or more, corresponding to the number of transport devices. When there are multiple second conveying components, all are connected to the first conveying component. This allows multiple second conveying components to receive wet fracturing sand from different transport devices, thereby improving transport efficiency. The first conveying component includes a first buffer device and a first conveying device. The first buffer device is used for fine processing of the wet fracturing sand. The first or second conveying device can be, for example, a belt conveyor, a screw conveyor, or other devices capable of conveying. The conveying device includes at least one conveying unit. For a belt conveyor, the conveying unit is a conveyor belt; for a screw conveyor, the conveying unit is a screw conveying channel. This embodiment primarily uses a belt conveyor as an example.

[0036] In this embodiment, as Figures 1-4 As shown, the wet fracturing sand conveying device 100 includes a first conveying component 1 and a second conveying component 2. The first conveying component 1 includes a first buffer device 11 and a first conveying device 12, wherein the first conveying device 12 is used to connect the first buffer device 11 and the sand mixing equipment. The second conveying component 2 includes a second buffer device 21 and a second conveying device 22. The second buffer device 21 is used to receive external wet fracturing sand and perform preliminary processing, and the second conveying device 22 is used to connect the second buffer device 21 and the first buffer device 11.

[0037] Specifically, when using the wet fracturing sand conveying device of this embodiment, the wet fracturing sand is conveyed at the fracturing well site to the second buffer device 21 of the second conveying assembly 2 for preliminary treatment such as stirring by means of ton bags, sand trucks, or dump trucks. The pre-treated wet fracturing sand is then conveyed to the first conveying assembly 1 via the second conveying device 22. The first conveying assembly 1 is located on the discharge side of the second conveying assembly 2. The first buffer device 11 is connected to the discharge end of the second conveying device 22 and can receive the wet fracturing sand conveyed by the second conveying device 22 and perform fine processing. Then, the finely processed wet fracturing sand is conveyed to the sand mixing equipment via the first conveying device 12. The sand mixing equipment is, for example, a sand mixing tank. Specifically, within the first conveying assembly 1, the first buffer device 11 can perform various fine processing on the wet fracturing sand, such as vibration, filtration, and stirring, and can convey the finely processed wet fracturing sand to the first conveying device 12. Finally, the wet fracturing sand is conveyed to the sand mixing equipment via the first conveying device 12 based on a predetermined conveying speed.

[0038] Specifically, in this embodiment, the first buffer device 11 is set at a first position of the first conveying device 12, such as the first end of the first conveying device 12. The wet fracturing sand falls from the second conveying device 22 of the second conveying assembly 2 into the first buffer device 11 and is conveyed to the sand mixing equipment through the second position of the first conveying device 12, such as the second end of the first conveying device 12.

[0039] Specifically, the first conveying device 12 includes a first base 121, on which a first conveyor belt 122 is provided. The first conveyor belt 122 can be a flat belt or a belt with partitions. The first conveyor belt 122 is inclined, with its first end facing the discharge port of the first buffer device 11 and its second end provided with a first feeding device 123. The first feeding device 123 is connected to the sand mixing equipment and is used to convey wet fracturing sand to the sand mixing equipment. In addition, the first feeding device 213 can break up the lumps of wet fracturing sand.

[0040] Furthermore, a first lifting device 124 is provided at, for example, the middle of the first conveyor belt 122. One end of the first lifting device 124 is connected to the first base 121, and the other end of the first lifting device 124 is connected to, for example, the middle of the first conveyor belt 122. The second end of the first conveyor belt 122 can be lifted to a predetermined height by the action of the first lifting device 124, so that the first conveyor belt 122 can be set in an inclined manner.

[0041] The first lifting device 124 here can lift the second end of the first conveyor belt 122 to a fixed height or a variable height, thereby allowing the first conveyor belt 122 to be set in an inclined manner with an adjustable inclination angle. The first lifting device 124 can be, for example, a support rod of constant length to achieve lifting to a fixed height. Alternatively, the first lifting device 124 can be a telescopic cylinder with adjustable length, which can be manually or automatically controlled, allowing the lifting height of the first conveyor belt 122 to be adjusted. In this embodiment, by changing the inclination angle of the first conveyor belt 122 through the first lifting device 124, the first feeding device 213 can accommodate sand mixing equipment at different heights.

[0042] Furthermore, the first conveying device 12 also includes a weighing component, which is used to weigh the weight or volume of the wet fracturing sand on the first conveyor belt 122. This component can be, for example, an electronic belt scale, a nuclear belt scale, dual-LiDAR detection, or a binocular vision measurement system. In this embodiment, a first belt scale 125 is provided on the first conveyor belt 122. The first belt scale 125 can weigh the weight or volume of the wet fracturing sand on the first conveyor belt 122, so that the first buffer device 11 can control the amount of material discharged.

[0043] The first buffer device 11 is a sand tank that integrates vibration, filtration and stirring functions, thereby realizing the functions of breaking up, vibrating, stirring and continuously conveying wet fracturing sand. The essence of this process is to enhance the fluidity of wet fracturing sand and transform it into something that is essentially similar to dry fracturing sand, so as to accurately control and measure the amount of wet fracturing sand conveyed.

[0044] The first buffer device 11 is provided with a vibration filtering functional area A, a stirring and arch-breaking functional area B, and a conveyor belt functional area C from top to bottom. In this embodiment, the first buffer device 11 includes a frame 111, on which a hopper assembly is provided. The hopper assembly is located above the frame 111. The hopper assembly includes a hopper frame 112 and a hopper body 113. The hopper frame 112 is located on the upper surface of the frame 111, and the hopper body 113 is located below the hopper frame 112. Wet fracturing sand falls onto the first conveyor belt 122 through the hopper assembly.

[0045] An elastic element 114 is provided between the hopper frame 112 and the frame 111 of the hopper assembly. The elastic element 114 can be, for example, a vibration spring. Here, the elastic element 114 causes the hopper assembly to vibrate, thereby achieving vibration of the wet fracturing sand. A motor 115 is installed on the hopper frame 112, and the motor 115 is connected to the elastic element 114. The motor 115 transmits the vibration force, and the elastic element 114 separates the vibration filtering functional area A from the stirring and arch-breaking functional area B, achieving the independence of the upper sand feeding area and realizing the vibration function.

[0046] A filter device is installed inside the hopper assembly to filter the wet fracturing sand input into the hopper assembly. Furthermore, a bulk material recovery device 119 can be installed inside the first buffer device 11. This allows the wet fracturing sand to pass more smoothly through the filter device after vibration, removing larger impurities during the filtration process. The bulk material recovery device 119 facilitates the collection of these impurities.

[0047] Furthermore, a moisture measuring device 116 is provided on the inner side of the hopper body 113. Here, the moisture measuring device 116 measures the moisture content in the wet fracturing sand. By measuring the moisture content in the wet fracturing sand in real time, the online detection of the moisture content of the conveyed wet fracturing sand is realized.

[0048] In addition, a first stirring device 117 is provided on the inner side of the hopper body 113. The first stirring device 117 is connected to the motor 115. The first stirring device 117 disperses the wet crushing sand after vibration filtration so that it can fall onto the belt better.

[0049] Furthermore, the bottom of the hopper body 113 has a discharge port, and a gate 118 is provided on the inner side of the discharge port. The wet fracturing sand that has been vibrated and stirred falls into the first conveyor belt 122 through the discharge port. Here, the gate 118 can control the opening and closing of the discharge port.

[0050] Furthermore, a conveying scraper is provided on the hopper body 113. The conveying scraper ensures the flatness of the wet fracturing sand falling onto the conveyor belt, and achieves a uniform cross-sectional shape of the wet fracturing sand on the conveyor belt.

[0051] The above embodiments of this utility model can highly integrate the hopper assembly and the belt conveyor, which can reduce the height of the hopper assembly to facilitate the loading of wet sand, and also shorten the overall length of the wet fracturing sand conveyor to facilitate transportation.

[0052] Furthermore, in this embodiment, the second buffer device 21 is disposed at the first end of the second conveying device 22. Wet fracturing sand falls from the external transport device into the second buffer device 21, and is then conveyed from the first end of the second conveying device 22 to the second end, finally falling into the first buffer device 11. The second buffer device 21 contains a second stirring device 211. The main function of the second buffer device 21 in this embodiment is to load the wet fracturing sand and perform preliminary stirring before conveying it to the first buffer device 11 via the second conveying device 22.

[0053] Further, the second conveying device 22 includes a second base 221, on which a second conveyor belt 222 and a second lifting device 223 are mounted. The second conveyor belt 222 is inclined, with its first end facing the second buffer device 21, and its second end equipped with the second unloading device 223. The second conveyor belt 222 can be a flat belt or a belt with partitions. The second end of the second conveyor belt 222 is connected to the top of the first buffer device 11 via the second unloading device 223.

[0054] The first lifting device 124 here can lift the second end of the first conveyor belt 122 to a fixed height or a variable height, thereby allowing the first conveyor belt 122 to be set in an inclined manner with an adjustable inclination angle. The first lifting device 124 can be, for example, a support rod of constant length to achieve lifting to a fixed height. Alternatively, the first lifting device 124 can be a telescopic cylinder with adjustable length, which can be manually or automatically controlled, allowing the lifting height of the first conveyor belt 122 to be adjusted. In this embodiment, by changing the inclination angle of the first conveyor belt 122 through the first lifting device 124, the first feeding device 213 can accommodate sand mixing equipment at different heights.

[0055] Furthermore, a second lifting device 224 is provided at, for example, the middle of the second conveyor belt 222. One end of the second lifting device 224 is connected to the second base 221, and the other end of the second lifting device 224 is connected to, for example, the middle of the second conveyor belt 222. The operation of the second lifting device 224 can lift the second end of the second conveyor belt 222 to a predetermined height, thereby allowing the second conveyor belt 222 to be set in an inclined manner. Here, the second lifting device 224 can lift the second end of the second conveyor belt 222 to a fixed height or a variable height, thereby allowing the second conveyor belt 222 to be set in an inclined manner and the inclination angle to be adjustable. The second lifting device 224 can be, for example, a support rod of constant length to achieve lifting to a fixed height. Of course, the second lifting device 224 can also be a telescopic cylinder with adjustable length. The telescopic cylinder can be manually or automatically controlled, and the lifting height of the second conveyor belt 222 can be adjusted through the telescopic cylinder. In this embodiment, the second lifting device 224 changes the tilt angle of the second conveyor belt 222, so that the second feeding device 223 can correspond to the first buffer device 11 at different heights.

[0056] Furthermore, to facilitate the transport of wet fracturing sand, the second conveyor belt 222 includes a first belt section 2221 and a second belt section 2222 connected to each other. The first belt section 2221 is disposed on the second base 221 and, for example, near the first end of the second base 221, parallel to the second base 221. The second belt section 2222 is inclined relative to the second base 221, wherein the first end of the second belt section 2222 is connected to the first belt section 2221, and its second end can be inclined by the second lifting device 224. The second unloading device 223 is disposed at the second end of the second belt section 2222. In this way, the wet fracturing sand transported by the external transport device can first fall onto the horizontally arranged first belt section 2221, which facilitates the loading of the wet fracturing sand. Then, after being transported to a higher position by the second belt section 2222, the wet fracturing sand is unloaded into the first buffer device 11 by the second unloading device 223.

[0057] Furthermore, the second conveying device 22 also includes a weighing component for weighing the weight or volume of the wet fracturing sand on the second conveyor belt 222. This weighing component can be, for example, an electronic belt scale, a nuclear belt scale, dual-LiDAR detection, or a binocular vision measurement system. In this embodiment, a second belt scale 225 is provided on the first belt section 2221 and / or the second belt section 2222 of the second conveyor belt 222, particularly on the second belt section 2222. The belt scale 225 can weigh the weight or volume of the wet fracturing sand on the second belt section 2222, so that the second buffer device 22 can control the amount of material discharged.

[0058] The above embodiments of this utility model can highly integrate the hopper assembly and the belt conveyor, which can reduce the height of the hopper assembly to facilitate the loading of wet sand, and also shorten the overall length of the wet fracturing sand conveyor to facilitate transportation.

[0059] The second embodiment of this utility model provides an operating system for wet fracturing sand well sites, which includes a wet fracturing sand conveying device, a transport device, and a sand mixing device. The wet fracturing sand conveying device mentioned here is any one of the wet fracturing sand conveying devices in the first embodiment described above.

[0060] This embodiment is mainly used in wet fracturing sand well sites. After being processed at the production site, the wet fracturing sand is transported to or near the well site by a first transport device for stockpiling and storage. Since the well site is an open-air sand plant, an appropriate spraying device can be used to maintain the moisture content of the wet fracturing sand, avoiding dust pollution caused by the use of other equipment. Then, the wet fracturing sand is transported to the buffer device of the wet fracturing sand transport device by a second transport device, and then conveyed to the sand mixing equipment by a belt conveyor for the preparation of fracturing fluid. The first transport device can be a sand truck or a dump truck, the second transport device can be a sand truck, a dump truck, or a loader, and the sand mixing equipment can be the sand mixing tank of the sand mixing truck.

[0061] In one implementation, such as Figures 5-6 As shown, the operating system for wet fracturing sand well sites includes a wet fracturing sand conveying device 100, a transport device 200, and a sand mixing device 300. The wet fracturing sand conveying device 100, for example, adopts the structure of the first embodiment. In this embodiment, the wet fracturing sand conveying device 100 can, for example, convey wet fracturing sand transported by multiple transport devices 200 to the sand mixing device 300. For example, the number of second buffer devices 21 can be matched with the number of transport devices 200, so that multiple transport devices 200 can correspondingly drop wet fracturing sand into the corresponding second buffer device 21.

[0062] To save space and facilitate material unloading, multiple transport devices 200 are arranged side-by-side in a direction perpendicular to the extension direction of the first transport device 12. Considering that the first buffer device 11 in the wet fracturing sand transport device 100 is used to receive wet fracturing sand transported by multiple second transport components 2, the size of the hopper assembly of the first buffer device 11 in the direction perpendicular to the first transport device 12 can be increased to simultaneously receive wet fracturing sand transported by multiple second transport components 2. The use of a widened hopper assembly allows for simultaneous sand loading at multiple stations, and the angle of each transport device 200 can be adjusted according to the limitations of the work site, reducing the adverse effects of limited space at the fracturing well site.

[0063] This utility model embodiment can simultaneously realize the unloading of wet fracturing sand transported by multiple transport devices, improving the unloading efficiency. Furthermore, during the transport of wet fracturing sand, it undergoes various treatments such as vibration and stirring to prevent the wet fracturing sand from agglomerating due to its low moisture content, thereby improving the effect of subsequent fracturing operations.

[0064] Furthermore, the features of the embodiments shown in the accompanying drawings or the various embodiments mentioned in this specification should not be construed as independent embodiments. Rather, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments to produce other embodiments not described in words or with reference to the accompanying drawings.

[0065] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application, and should all be included within the protection scope of this application.

Claims

1. A wet frac sand delivery apparatus, characterized by, The first conveying assembly and the second conveying assembly are sequentially arranged, the first conveying assembly comprises a first buffer device and a first conveying device, the first conveying device is used for connecting the first buffer device and a sand mixing device, the second conveying assembly comprises a second buffer device and a second conveying device, the second conveying device is used for connecting the second buffer device and the first buffer device, and the first buffer device and the second buffer device are used for grading treatment of wet fracturing sand.

2. The wet frac sand delivery apparatus of claim 1, wherein, The first conveying device comprises a first base, a first conveying unit and a first lifting device are arranged on the first base, the first conveying unit is arranged in an inclined manner, a first position of the first conveying unit corresponds to a discharge port of the first buffer device, a second position of the first conveying unit is provided with a first discharging device, one end of the first lifting device is connected with the first base, and the other end of the first lifting device is connected with the first conveying unit to adjust an inclination angle of the first conveying unit.

3. The wet frac sand delivery apparatus of claim 2, wherein, The second conveying device comprises a second base, a second conveying unit and a second lifting device are arranged on the second base, the second conveying unit is arranged in an inclined manner, a first position of the second conveying unit corresponds to a discharge port of the second buffer device, a second end of the second conveying unit is provided with a second discharging device connected with the first buffer device, one end of the second lifting device is connected with the second base, and the other end of the second lifting device is connected with the second conveying unit to adjust an inclination angle of the second conveying unit.

4. The wet frac sand delivery apparatus of claim 3, wherein, The second conveying device is a belt conveying device, the second conveying unit comprises a first belt part and a second belt part, the first belt part is arranged on the second base and arranged in parallel with the second base, the second belt part is arranged in an inclined manner relative to the second base, a first end of the second belt part is connected with the first belt part, and a second end of the second belt part can be lifted through the second lifting device.

5. The wet frac sand delivery apparatus of claim 3, wherein, The first conveying device and / or the second conveying device further comprises a weighing assembly for weighing wet fracturing sand.

6. The wet frac sand delivery apparatus of claim 1, wherein, The second conveying assembly is a plurality of second conveying assemblies, and the second conveying devices of the plurality of second conveying assemblies are all connected with the first buffer device.

7. The wet frac sand delivery apparatus of any of claims 1-6, wherein, The first buffer device and / or the second buffer device has at least one function of vibration, filtration and stirring.

8. The wet frac sand delivery apparatus of claim 7, wherein, The first buffer device comprises a frame, a hopper assembly is arranged on the frame, the hopper assembly comprises a hopper frame and a hopper body, a bottom of the hopper body is provided with a discharge port, an inner side of the discharge port is provided with a shutter for closing the discharge port, the hopper frame is arranged on an upper end face of the frame, an elastic member is arranged between the hopper frame and the frame, and an inner side of the hopper body is provided with a moisture measuring device for measuring water content of wet fracturing sand.

9. The wet frac sand delivery apparatus of claim 8, wherein, The hopper body is provided with a filtering device and a first stirring device, a motor is arranged on the hopper frame, the motor is connected with the elastic member and the first stirring device, the wet fracturing sand further comprises a bulk material recycling device, and a conveying scraper is arranged on the hopper body.

10. The wet frac sand delivery apparatus of claim 7, wherein, The second buffer device is provided with a second stirring device.

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