Skid-mounted pump set device

Abstract

The utility model provides a skid-mounted pump set device, which belongs to the field of unconventional oil and gas resource development devices, and comprises a main agent pry, an auxiliary agent pry and an explosion-proof weighing assembly, the main agent pry comprises a main agent pry frame and a main agent tank, the auxiliary agent pry comprises an auxiliary agent pry frame, an integrated pump set and an auxiliary agent tank, and the auxiliary agent pry frame is connected with the main agent pry frame; the anti-explosion weighing assemblies are detachably connected with the main agent pry frame and the auxiliary agent pry frame, and at least one anti-explosion weighing assembly is arranged at the bottom of the main agent tank and the bottom of the auxiliary agent tank. The main agent tank and the auxiliary agent tank serve as transfer stations between the charging basket and the integrated pump set, so that the device can pump reagents under the condition of no flow interruption, and the pumping efficiency is improved; the problems that an empty pipe of an existing pump set is difficult to start and cannot be fed are effectively solved; compared with a traditional electronic flowmeter, the explosion-proof weighing assembly can guarantee more accurate flow measurement results.

Description

Technical Field

[0001] This utility model relates to the field of unconventional oil and gas resource development equipment, and more specifically, to a skid-mounted pump unit. Background Technology

[0002] Hydraulic fracturing technology is particularly crucial in the development of unconventional oil and gas resources such as shale gas and tight sandstone gas. In the field of hydraulic fracturing, pump sets are generally divided into fracturing pump sets and feed pump sets. The fracturing pump set is mainly used to inject high-pressure fluid into the formation; the feed pump set is mainly used to extract reagents from the feed tank and pump them into the mixing truck to form a proppant-carrying fluid, providing the necessary materials for fracture formation and support.

[0003] However, in existing technologies, feed pump sets are generally in direct contact with the material tanks (hereinafter referred to as feed pump sets) to transport the reagents from the tanks to the mixing truck. However, it is important to consider that the material tanks have limited capacity for easy transport. Once the reagents in one tank are pumped out, the next tank needs to be replaced immediately. This not only causes flow interruption in the pump set but also affects pumping efficiency. Furthermore, in order to facilitate pumping the reagents from the tanks to the mixing truck, the pumping pipes in existing technologies are often too long, leading to frequent difficulties in starting with an empty pipe and failure to draw material from an empty pipe. Additionally, the auxiliary agent pumps in existing technologies are generally diaphragm pumps, and their flow rate is typically measured using electronic flow meters. However, in actual applications, the output flow rate of diaphragm pumps often exhibits large pulse peaks and troughs, resulting in high flow measurement errors and making it difficult to meet the requirements for precise control. These problems not only affect pumping efficiency but also lead to chemical waste and increased costs.

[0004] Therefore, the stability and accuracy of existing pump sets are easily affected, which has certain drawbacks. Utility Model Content

[0005] The purpose of this invention is to provide a skid-mounted pump unit to solve the problems of poor stability and accuracy of existing pump units.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A skid-mounted pump unit includes a main agent skid, an auxiliary agent skid, and an explosion-proof weighing assembly. The main agent skid includes a main agent skid frame and a main agent tank. The main agent skid frame is connected to the ground, and the main agent tank is connected to the main agent skid frame and located inside the main agent skid frame.

[0008] The excipient skid includes an excipient skid frame, an integrated pump unit, and an excipient tank. The excipient skid frame is connected to the main excipient skid frame. The excipient tank is connected to the excipient skid frame and is located on one side inside the excipient skid frame. The integrated pump unit is connected to the excipient skid frame and is located on the other side inside the excipient skid frame.

[0009] The explosion-proof weighing component is detachably connected to both the main agent skid frame and the auxiliary agent skid frame, and at least one of the explosion-proof weighing components is installed at the bottom of both the main agent tank and the auxiliary agent tank.

[0010] Furthermore, the explosion-proof weighing assembly includes an explosion-proof weighing sensor body, an upper mounting plate, and a lower mounting plate. The upper mounting plate abuts against the bottom end face of the main agent tank and the auxiliary agent tank. The lower mounting plate is detachably connected to the main agent skid frame and the auxiliary agent skid frame. The explosion-proof weighing sensor body is detachably connected to both the upper mounting plate and the lower mounting plate, and the explosion-proof weighing sensor body is located between the upper mounting plate and the lower mounting plate.

[0011] Furthermore, the integrated pump set includes a main agent pump and an auxiliary agent pump, and the auxiliary agent pump is a stainless steel rotary pump.

[0012] Furthermore, it also includes a remote dual data transmission module, which is electrically connected to the skid-mounted pump unit. The remote dual data transmission module includes a 4G network system and a wired data transmission system, and the remote dual data transmission module is also equipped with an API interface.

[0013] Furthermore, the auxiliary agent skid also includes an explosion-proof air conditioner, which is detachably connected to the top of the auxiliary agent skid frame.

[0014] Furthermore, both the main agent skid and the auxiliary agent skid are equipped with roller shutters, which are located around the main agent skid and the auxiliary agent skid.

[0015] Furthermore, both the main agent tank and the auxiliary agent tank are connected to radar level gauges. The radar level gauges are located on the top end faces of the main agent tank and the auxiliary agent tank, and the radar level gauges are electrically connected to the remote dual data transmission module.

[0016] Furthermore, both the main agent tank and the auxiliary agent tank are connected to a liquid level observation tube, which is connected to the main agent tank and the auxiliary agent tank, and the liquid level observation tube is located on the side wall of the main agent tank and the auxiliary agent tank.

[0017] Furthermore, the main agent pump is connected to the main agent tank via a hose, and the auxiliary agent pump is connected to the auxiliary agent tank via a hose.

[0018] In summary, this utility model has the following beneficial effects:

[0019] The main reagent tank and auxiliary reagent tank act as transfer stations between the material tank and the integrated pump set, enabling the device to pump reagents without interruption of flow, thus making the entire construction process smoother and improving construction efficiency. Furthermore, since the integrated pump set, main reagent tank, and auxiliary reagent tank are integrated into one device, the distance between the pump set and the reagent to be pumped is shortened, effectively improving the problems of difficult start-up and failure to draw material in empty pipes caused by excessively long pumping pipelines in existing technologies.

[0020] The explosion-proof weighing component can calculate the flow output of the entire device by measuring the weight changes of the main agent tank and the auxiliary agent tank. This measurement method, which relies on the conservation of mass, has stronger anti-interference capabilities than the electronic flow meter measurement method in the existing technology. It will not cause measurement errors due to changes in the viscosity of the pumped liquid or the interruption of the pump group, and can ensure more accurate flow measurement results. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a perspective view provided by this utility model;

[0023] Figure 2 This is the front view provided by this utility model;

[0024] Figure 3 This utility model provides Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 This is the left view provided by this utility model.

[0026] Legend: 1-Main agent skid frame; 2-Agitator; 3-Main agent tank; 4-Explosion-proof weighing assembly; 41-Upper mounting plate; 42-Explosion-proof weighing sensor body; 43-Lower mounting plate; 5-Integrated pump set; 6-Auxiliary agent skid frame; 7-Auxiliary agent tank. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] The following is in conjunction with the appendix Figure 1-4 The present invention will now be described in further detail.

[0029] This application provides a skid-mounted pump unit device, including a main agent skid, an auxiliary agent skid, and an explosion-proof weighing component 4. The main agent skid includes a main agent skid frame 1 and a main agent tank 3. The main agent skid frame 1 is connected to the ground, and the main agent tank 3 is connected to the main agent skid frame 1 and is located inside the main agent skid frame 1.

[0030] The excipient skid includes an excipient skid frame 6, an integrated pump unit 5, and an excipient tank 7. The excipient skid frame 6 is connected to the main excipient skid frame 1. The excipient tank 7 is connected to the excipient skid frame 6 and is located on one side inside the excipient skid frame 6. The integrated pump unit 5 is connected to the excipient skid frame 6 and is located on the other side inside the excipient skid frame 6.

[0031] The explosion-proof weighing component 4 can be detachably connected to the main agent skid frame 1 and the auxiliary agent skid frame 6, and at least one explosion-proof weighing component 4 is installed at the bottom of the main agent tank 3 and the auxiliary agent tank 7.

[0032] It should be noted that the volume of the main reagent tank 3 and the auxiliary reagent tank 7 is much larger than that of the reagent storage container. The specific number, volume, and shape of the main reagent tank 3 and the auxiliary reagent tank 7 can be determined according to actual usage requirements and are not limited here. For reference, in this embodiment, the tanks of the main reagent tank 3 and the auxiliary reagent tank 7 are both square, with one main reagent tank 3 and two auxiliary reagent tanks 7. Furthermore, a stirrer 2 is provided on the top of the main reagent tank 3. The stirrer 2 is used to stir and mix the reagents in the main reagent tank 3. The stirrer 2 is existing technology and will not be further described here.

[0033] Specifically, both the main reagent tank 3 and the auxiliary reagent tank 7 are equipped with inlets and outlets. When using this device, the reagents in the material tanks are first transported to the main reagent tank 3 and auxiliary reagent tank 7 through the inlets using an external feed pump. It should be noted that the material tanks are containers for storing the required reagents and are not included in this device. Subsequently, the main reagent pump and auxiliary reagent pump pump the reagents to the sand mixing vehicle. Unlike existing technologies where pump sets sequentially pump reagents from individual material tanks into the sand mixing vehicle, the main reagent tank 3 and auxiliary reagent tank 7 act as transfer stations between the material tanks and the integrated pump set 5. The main reagent tank 3 and auxiliary reagent tank 7 have a larger volume than the material tanks, enabling the device to pump reagents without interruption of flow, thus facilitating the entire process. The construction process is smoother and construction efficiency is improved. The principle is that the setting of the main agent tank 3 and the auxiliary agent tank 7 replaces the contact between the pump set and the material tank in the existing technology with the contact between the main agent pump and the main agent tank 3 and the auxiliary agent pump and the auxiliary agent tank 7. This allows the device to have a certain buffer replenishment time when pumping reagents. That is, the device can replenish reagents through the material tank while pumping out reagents. Furthermore, since the integrated pump set 5, the main agent tank 3 and the auxiliary agent tank 7 are integrated into one device, the distance between the pump set and the reagent to be pumped is shortened, which effectively improves the problems of difficult start-up of empty pipes and failure to draw material in empty pipes caused by excessively long pumping pipes in the existing technology.

[0034] Furthermore, the explosion-proof weighing assembly 4 includes an explosion-proof weighing sensor body 42, an upper mounting plate 41, and a lower mounting plate 43. The upper mounting plate 41 abuts against the bottom end face of the main agent tank 3 and the auxiliary agent tank 7. The lower mounting plate 43 is detachably connected to the main agent skid frame 1 and the auxiliary agent skid frame 6. The explosion-proof weighing sensor body 42 is detachably connected to both the upper mounting plate 41 and the lower mounting plate 43, and the explosion-proof weighing sensor body 42 is located between the upper mounting plate 41 and the lower mounting plate 43.

[0035] The explosion-proof weighing component 4 is used to measure the liquid flow rate of the main agent tank 3 and the auxiliary agent tank 7. The liquid flow rate is calculated by measuring the weight change of the liquid in real time, which effectively avoids the problem of large error in the existing pump set when measuring high viscosity fluid.

[0036] Specifically, the explosion-proof weighing component 4 can calculate the flow output of the entire device by measuring the weight changes of the main agent tank 3 and the auxiliary agent tank 7. This measurement method, which relies on the conservation of mass, has stronger anti-interference capabilities than the electronic flow meter measurement method in the existing technology. It will not produce measurement errors due to changes in the viscosity of the pumped liquid or the interruption of the pump group, and can ensure more accurate flow measurement results.

[0037] Furthermore, the integrated pump set 5 includes a main agent pump and an auxiliary agent pump, and the auxiliary agent pump is a stainless steel rotary pump.

[0038] Traditional diaphragm pumps suffer from problems such as large pulse fluctuations and inaccurate flow measurement during the pumping of auxiliary agents. In addition, their poor corrosion resistance leads to high equipment maintenance costs and short service life. On the other hand, stainless steel rotor pumps or screw pumps, due to their structural characteristics, can output a more stable flow, and their stainless steel pump bodies have excellent corrosion resistance.

[0039] Specifically, diaphragm pumps achieve liquid transport through the reciprocating motion of the diaphragm. This reciprocating motion characteristic determines that the flow output of the diaphragm pump is intermittent, resulting in a certain pulsation in the entire flow output process. In contrast, there is a gap between the rotor and the pump chamber of the rotary pump. This gap makes the resistance encountered by the liquid during transport relatively small and can effectively reduce backflow and turbulence during the transport process. The stainless steel rotary pump can also be replaced by a stainless steel screw pump or other pump types that can achieve similar effects, which is not limited here.

[0040] In summary, stainless steel rotary pumps offer more stable flow output compared to traditional diaphragm pumps, and their stainless steel pump body provides superior corrosion resistance.

[0041] Furthermore, it also includes a remote dual data transmission module, which is electrically connected to the skid-mounted pump unit. The remote dual data transmission module includes a 4G network system and a wired data transmission system, and the remote dual data transmission module is also equipped with an API interface.

[0042] The remote dual data transmission module, based on a redundancy design concept, offers more stable control compared to existing pump sets, allowing for real-time adjustment of pumping parameters. It also adds data recording and analysis capabilities compared to existing pump sets. Furthermore, the reserved API interface allows for future expansion with more intelligent functions, improving construction management efficiency and data analysis capabilities.

[0043] Furthermore, the auxiliary skid also includes an explosion-proof air conditioner, which is detachably connected to the top of the auxiliary skid frame.

[0044] Explosion-proof air conditioners are used for heat dissipation and cooling of the entire skid-mounted pump unit, as well as to optimize the construction environment inside the unit.

[0045] Furthermore, both the main agent skid and the auxiliary agent skid are equipped with roller shutters, which are located around the main agent skid and the auxiliary agent skid.

[0046] The roller shutter door isolates the entire device from the external environment, preventing external debris from entering and affecting its operation. It should be noted that the roller shutter door can be controlled manually or electrically, or other similar components can be used to isolate the entire device from the outside; no limitation is made here. For reference, in this embodiment, a manually operated roller shutter door is used to isolate the entire device from the outside.

[0047] It should be noted that in existing technologies, on-site construction environments are often characterized by high temperatures, high noise levels, and high dust levels, and there is a lack of dedicated experimental operation spaces and monitoring terminals, making it impossible to quickly test and optimize processes for backflowed liquids and new chemicals. Therefore, this technical solution includes a skid-mounted pump unit equipped with an experimental operation cabin, which integrates an explosion-proof air conditioning system, sound insulation layer, monitoring terminal, small test bench, and basic experimental equipment. The experimental operation cabin provides a comfortable and safe working space for construction personnel and allows for real-time on-site testing of chemical performance, rapid optimization of product formulations, and improved R&D efficiency and product quality control. The experimental operation cabin is existing technology and will not be further described here.

[0048] Furthermore, both the main agent tank 3 and the auxiliary agent tank 7 are connected to radar level gauges. The radar level gauges are located on the top end face of the main agent tank 3 and the auxiliary agent tank 7, and the radar level gauges are electrically connected to the remote dual data transmission module.

[0049] The radar level gauge can detect the reagent level in the main reagent tank 3 and the auxiliary reagent tank 7 in real time, so that construction personnel can understand the reagent level in the main reagent tank 3 and the auxiliary reagent tank 7 in a timely manner. In addition, it can be used in conjunction with the remote dual data transmission module to realize remote monitoring of the reagent level in the main reagent tank 3 and the auxiliary reagent tank 7.

[0050] Furthermore, both the main agent tank 3 and the auxiliary agent tank 7 are connected to a liquid level observation tube, which is connected to the main agent tank 3 and the auxiliary agent tank 7 and is located on the side wall of the main agent tank 3 and the auxiliary agent tank 7.

[0051] The liquid level observation tube allows on-site construction personnel to directly observe the reagent levels in the main reagent tank 3 and the auxiliary reagent tank 7.

[0052] Specifically, at least one liquid level observation tube is detachably connected to the side walls of the main agent tank 3 and the auxiliary agent tank 7. The liquid level observation tube utilizes the principle of communicating vessels to guide a portion of the liquid from the main agent tank 3 and the auxiliary agent tank 7 into the liquid level observation tube. At this time, the liquid level height in the liquid level observation tube is the liquid level height in the main agent tank 3 and the auxiliary agent tank 7. It should be noted that the number of liquid level observation tubes is not limited here, but should meet the usage requirements. For reference, in this embodiment, one liquid level observation tube is installed on the side wall of each of the main agent tank 3 and the auxiliary agent tank 7.

[0053] Furthermore, the main agent pump is connected to the main agent tank 3 via a hose, and the auxiliary agent pump is connected to the auxiliary agent tank 7 via a hose.

[0054] Flexible hose connections can effectively mitigate the transmission of vibrations from the device and improve the accuracy of flow measurement. Specifically, the integrated pump unit 5 generates vibrations during operation. If these vibrations are not isolated, they will be transmitted to the main agent tank 3 and the auxiliary agent tank 7, thus affecting the measurement of the explosion-proof weighing sensor and consequently the accuracy of flow measurement. If rigid pipe connections are used, the vibrations generated by the integrated pump unit 5 will be transmitted to the main agent tank 3 and the auxiliary agent tank 7 through the pipes. Flexible hose connections can effectively mitigate the vibration transmission caused by pipe connections.

[0055] In summary, this utility model has the following beneficial effects:

[0056] The main reagent tank 3 and the auxiliary reagent tank 7 act as transfer stations between the material tank and the integrated pump set 5, enabling the device to pump reagents without interruption of flow, thus making the entire construction process smoother and improving pumping efficiency. Furthermore, since the integrated pump set 5, the main reagent tank 3, and the auxiliary reagent tank 7 are integrated into one device, the distance between the pump set and the reagent to be pumped is shortened, effectively improving the problems of difficult start-up of empty pipes and failure to draw material in empty pipes caused by excessively long pumping pipelines in the existing technology.

[0057] The explosion-proof weighing component 4 can calculate the flow output of the entire device by measuring the weight changes of the main agent tank 3 and the auxiliary agent tank 7. This measurement method, which relies on the conservation of mass, has stronger anti-interference capabilities than the electronic flow meter measurement method in the existing technology. It will not cause measurement errors due to changes in the viscosity of the pumped liquid or the interruption of the pump group, and can ensure more accurate flow measurement results.

[0058] The above description is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above through embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A skid-mounted pump unit, characterized in that, It includes a main agent skid, an auxiliary agent skid, and an explosion-proof weighing assembly (4). The main agent skid includes a main agent skid frame (1) and a main agent tank (3). The main agent skid frame (1) is connected to the ground, and the main agent tank (3) is connected to the main agent skid frame (1). The main agent tank (3) is located inside the main agent skid frame (1). The excipient skid includes an excipient skid frame (6), an integrated pump assembly (5), and an excipient tank (7). The excipient skid frame (6) is connected to the main agent skid frame (1). The excipient tank (7) is connected to the excipient skid frame (6) and is located on one side inside the excipient skid frame (6). The integrated pump assembly (5) is connected to the excipient skid frame (6) and is located on the other side inside the excipient skid frame (6). The explosion-proof weighing component (4) is detachably connected to the main agent skid frame (1) and the auxiliary agent skid frame (6), and at least one of the explosion-proof weighing components (4) is installed at the bottom of the main agent tank (3) and the auxiliary agent tank (7).

2. The skid pump set apparatus of claim 1, wherein, The explosion-proof weighing assembly (4) includes an explosion-proof weighing sensor body (42), an upper mounting plate (41), and a lower mounting plate (43). The upper mounting plate (41) abuts against the bottom end face of the main agent tank (3) and the auxiliary agent tank (7). The lower mounting plate (43) is detachably connected to the main agent skid frame (1) and the auxiliary agent skid frame (6). The explosion-proof weighing sensor body (42) is detachably connected to both the upper mounting plate (41) and the lower mounting plate (43), and the explosion-proof weighing sensor body (42) is located between the upper mounting plate (41) and the lower mounting plate (43).

3. The skid pump set apparatus of claim 1, wherein, The integrated pump set (5) includes a main agent pump and an auxiliary agent pump, and the auxiliary agent pump is a stainless steel rotor pump.

4. The skid pump set apparatus of claim 1, wherein, It also includes a remote dual data transmission module, which is electrically connected to the skid-mounted pump unit. The remote dual data transmission module includes a 4G network system and a wired data transmission system, and the remote dual data transmission module is also equipped with an API interface.

5. The skid-mounted pump unit according to claim 1, characterized in that, The auxiliary skid also includes an explosion-proof air conditioner, which is detachably connected to the top of the auxiliary skid frame (6).

6. The skid pump set apparatus of claim 1, wherein, Both the main agent skid and the auxiliary agent skid are equipped with roller shutters, which are located around the main agent skid and the auxiliary agent skid.

7. The skid pump set apparatus of claim 4, wherein, Both the main agent tank (3) and the auxiliary agent tank (7) are connected to radar level gauges. The radar level gauges are located on the top end faces of the main agent tank (3) and the auxiliary agent tank (7), and the radar level gauges are electrically connected to the remote dual data transmission module.

8. The skid pump set apparatus of claim 1, wherein, Both the main agent tank (3) and the auxiliary agent tank (7) are connected to a liquid level observation tube. The liquid level observation tube is connected to the main agent tank (3) and the auxiliary agent tank (7), and the liquid level observation tube is located on the side wall of the main agent tank (3) and the auxiliary agent tank (7).

9. The skid pump set apparatus of claim 3, wherein, The main agent pump is connected to the main agent tank (3) via a hose, and the auxiliary agent pump is connected to the auxiliary agent tank (7) via a hose.

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