Plunger lubrication remote automatic oiling system for fracturing truck

Abstract

The utility model relates to the technical field of fracturing trucks, in particular to a plunger lubrication remote automatic oiling system for a fracturing truck, which comprises an oil supply tank and a control module, an oil pump is connected onto the oil supply tank, an outlet of the oil pump is connected with an oil outlet pipe, and a plurality of lubricating oil tanks are connected onto the oil outlet pipe in parallel. A detection module used for detecting the oil level is arranged in the lubricating oil tank, and the oil pump and the detection module are electrically connected with a control module. The system can be remotely operated, and a worker does not need to enter a high-pressure area for operation, so that online refueling can be realized during fracturing operation without shutdown for refueling operation, and the operation efficiency and the operation safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of fracturing truck technology, specifically to a remote automatic lubrication system for plungers used in fracturing trucks. Background Technology

[0002] Fracturing trucks are specialized vehicles used to inject high-pressure, high-volume fracturing fluid into wells to break up formations and squeeze proppant into fractures. They are mainly used for various fracturing operations in oil, gas, and water wells. The plunger sealing packing is one of the key components of the hydraulic end of the fracturing pump and also a major wear part. The service life of the plunger sealing packing directly affects the normal implementation of fracturing operations.

[0003] In actual use, the plunger sealing packing of fracturing pumps often fails due to wear, resulting in leakage and affecting normal fracturing operations. The wear failure of the plunger sealing packing is closely related to the lubrication condition of the packing. When the plunger reciprocates, it rubs against the sealing packing. If the lubrication is poor, it is easy to cause wear of the sealing packing.

[0004] Existing fracturing operations involve long construction cycles and high packing lubrication oil consumption. On-site personnel must closely monitor packing oil consumption to determine whether to replenish the oil. For packing oil replenishment on fracturing trucks, oil is typically added sequentially from a refueling can using a hand pump, which is inefficient when refueling multiple fracturing trucks. Furthermore, packing refueling requires operation in a high-pressure area, necessitating a halt to construction work before refueling can proceed, thus impacting the efficiency of on-site fracturing operations.

[0005] Application number CN113753531B discloses a centralized automatic lubrication device for a coal mine belt conveyor. The device includes a lubricating oil tank equipped with a level sensor to detect the oil level. A pump mounted on the tank transfers the lubricating oil through a lubrication pipeline to the bearing chamber. The lubrication pipeline comprises several lubrication pipes, with pressure sensors on these pipes detecting pressure changes. A flow meter at the end of each pipe detects the lubricating oil flowing out. A temperature sensor is located on one side of the bearing to detect its real-time temperature. A central control unit is connected to the level sensor, pump, pressure sensor, flow meter, and temperature sensor, and controls the pump's operating parameters. While this automatic lubrication device can detect the lubricating oil level in the tank, it is inaccurate in detecting high and low levels of lubricating oil, making it difficult to accurately determine the remaining amount of lubricating oil. Utility Model Content

[0006] The technical problem this invention aims to solve is: how to accurately determine the amount of lubricating oil in the lubricating oil tank, and to solve the problem of needing to stop the machine to add lubricating oil during the refueling process.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] First, a remote automatic refueling system for plunger lubrication of fracturing trucks is provided, including an oil supply tank and a control module. An oil pump is connected to the oil supply tank, and an oil outlet pipe is connected to the outlet pipe. Multiple lubricating oil tanks are connected in parallel to the oil outlet pipe. A detection module for detecting the oil level is installed in the lubricating oil tank. The oil pump and the detection module are electrically connected to the control module.

[0009] Furthermore, the detection module includes a high-position detector and a low-position detector distributed vertically, both of which are electrically connected to the control module.

[0010] When the low-level detector cannot detect the oil level, oil can be supplied to the lubricating oil tank; when the high-level detector detects the oil level, oil supply to the lubricating oil tank will stop.

[0011] Furthermore, an overflow valve is connected to the oil outlet pipe, and the outlet of the overflow valve is connected to the oil supply tank.

[0012] The overflow valve is used to control the oil pressure in the oil outlet pipe, ensuring that the pressure in the oil outlet pipe is constant, and to return excess oil to the oil supply tank, making the system more stable and reliable in use.

[0013] Furthermore, a pressure monitoring device is connected to the oil outlet pipe.

[0014] Pressure sensors are used to detect the oil pressure in the oil pipe.

[0015] Furthermore, a level gauge is installed on the oil supply tank.

[0016] A level gauge is used to indicate the flow rate in the oil supply tank.

[0017] Furthermore, an electromagnetic switch is installed between the lubricating oil tank and the oil outlet pipe, and the electromagnetic switch is electrically connected to the control module.

[0018] The electromagnetic switch controls the opening and closing of the oil outlet pipe through the control module, and works in conjunction with the detection module to realize remote automatic addition of lubricating oil to the lubricating oil tank.

[0019] Furthermore, a one-way valve is provided at the oil inlet of the lubricating oil tank.

[0020] The one-way valve is designed to prevent lubricating oil in the lubricating oil tank from flowing back into the oil outlet pipe.

[0021] This invention has the following advantages: It utilizes an oil pump and detection module to automatically add oil to the lubricating oil tank when the lubricating oil is insufficient, and stops adding oil when the tank is nearly full, resulting in a high degree of automation and more stable and reliable operation. Remote operation is achieved through an electromagnetic switch, eliminating the need for personnel to enter the high-pressure area, thus enabling online oiling during fracturing operations without stopping the machine, greatly improving operational efficiency and safety. Furthermore, the overflow valve prevents excessive oil pressure in the outlet pipe, ensuring system stability and allowing excess lubricating oil to flow back into the supply tank, reducing waste and lowering costs. Attached Figure Description

[0022] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a connection diagram for this embodiment;

[0024] Figure 2 This is a schematic diagram of the control module installation in this embodiment. Detailed Implementation

[0025] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] It should be noted that all directional indicators in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] This utility model provides a remote automatic lubrication system for plungers in fracturing trucks, such as... Figure 1 As shown, it includes an oil supply tank 7, an oil pump 5 connected to the oil supply tank 7, an oil outlet pipe 9 connected to the oil pump 5, and multiple lubricating oil tanks 8 connected in parallel to the oil outlet pipe 9. The lubricating oil tanks 8 provide lubricating oil to the plunger sealing packing of the fracturing vehicle. The lubricating oil tank 8 is equipped with a detection module to detect the amount of lubricating oil in the lubricating oil tank 8.

[0030] In this embodiment, when the lubricating oil in any lubricating oil tank 8 is insufficient, the oil pump 5 operates, drawing lubricating oil from the supply oil tank 7 and supplying it to the lubricating oil tank 8 through the oil outlet pipe 9. The lubricating oil tank 8 then supplies lubricating oil to the packing, ensuring the normal use of the packing and preventing severe wear. When the lubricating oil in the lubricating oil tank 8 is almost full, the oil supply to the lubricating oil tank 8 is stopped.

[0031] like Figure 2 As shown, in order to better and more stably add oil to the lubricating oil tank 8, the lubricating oil tank 8 is equipped with a high-level detector 81 and a low-level detector 82 distributed vertically. When the oil level in the lubricating oil tank 8 reaches the low-level detector 82, the oil pump 5 works to supply oil to the lubricating oil tank 8. When the oil level in the lubricating oil tank 8 reaches the high-level detector 81, the oil supply to the lubricating oil tank 8 stops.

[0032] The system also includes a control module, in which the oil pump 5, high-level detector 81, and low-level detector 82 are all electrically connected to the control module. When the control module receives signals from the high-level detector 81 and the low-level detector 82, it controls the oil pump 5 to perform the corresponding operation.

[0033] In this embodiment, to prevent excessive pressure in the oil outlet pipe 9 during the oil supply process, an overflow valve 4 is connected to the oil outlet pipe 9, and the outlet of the overflow valve 4 is connected to the oil supply tank 7. When the oil pressure in the oil outlet pipe 9 is too high, the lubricating oil will flow back to the oil supply tank 7 through the overflow valve 4 to ensure the stability of the entire system pressure. Correspondingly, a pressure monitoring device is connected to the oil outlet pipe 9. In this embodiment, the pressure monitoring device is a pressure sensor 3. In other embodiments, the pressure monitoring device can also be a pressure gauge.

[0034] The oil supply tank 7 is equipped with a level gauge 6 to indicate the oil level in the oil supply tank 7. When the oil level is insufficient, the oil supply tank 7 can be replenished with lubricating oil in a timely manner.

[0035] Meanwhile, in order to accurately supply oil to the designated lubricating oil tank 8 during use, each lubricating oil tank 8 is equipped with an electromagnetic switch 2 between it and the oil outlet pipe 9. When adding oil, the corresponding electromagnetic switch 2 is turned on, and when adding oil is not needed, the electromagnetic switch 2 is turned off. The electromagnetic switch 2 is electrically connected to the control module, which can control the electromagnetic switch 2 to turn on or off, realizing remote operation without the need for on-site operation by operators.

[0036] In this embodiment, a one-way valve 1 is provided between the lubricating oil tank 8 and the electromagnetic switch 2 to prevent oil in the lubricating oil tank 8 from flowing back into the oil outlet pipe 9.

[0037] In this embodiment, during use, when the oil level in one or more lubricating oil tanks 8 reaches the low level detector 82, the corresponding electromagnetic switch 2 opens, the oil pump 5 operates, and the lubricating oil in the supply oil tank 7 is drawn out and delivered to the lubricating oil tank 8. When the oil level in the lubricating oil tank 8 reaches the high level detector 81, the corresponding electromagnetic switch 2 closes. The oil pump 5 stops working when the oil level in all the lubricating oil tanks 8 reaches the high level detector 81, thus completing the refueling process.

[0038] This system can be operated remotely without requiring personnel to enter the high-pressure area, thus enabling online refueling during fracturing operations without stopping the machine for refueling, greatly improving operational efficiency and safety.

[0039] In this embodiment, eight lubricating oil tanks 8 are provided. In other embodiments, the number of lubricating oil tanks 8 can be set according to the needs of the site.

[0040] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A remote automatic lubrication system for plungers in fracturing trucks, characterized in that, It includes an oil supply tank (7) and a control module. An oil pump (5) is connected to the oil supply tank (7). An oil outlet pipe (9) is connected to the outlet of the oil pump (5). Multiple lubricating oil tanks (8) are connected in parallel to the oil outlet pipe (9). A detection module for detecting the oil level is installed in the lubricating oil tank (8). The oil pump (5) and the detection module are electrically connected to the control module.

2. The remote automatic lubrication system for plungers in fracturing trucks according to claim 1, characterized in that, The detection module includes a high-position detector (81) and a low-position detector (82) distributed vertically, and both the high-position detector (81) and the low-position detector (82) are electrically connected to the control module.

3. The remote automatic lubrication system for plungers in fracturing trucks according to claim 1, characterized in that, An overflow valve (4) is connected to the oil outlet pipe (9), and the outlet of the overflow valve (4) is connected to the oil supply tank (7).

4. The remote automatic lubrication system for plungers in fracturing trucks according to claim 1, characterized in that, A pressure monitoring device is connected to the oil outlet pipe (9).

5. A remote automatic lubrication system for plungers in fracturing trucks according to claim 1, characterized in that, The oil supply tank (7) is equipped with a level gauge (6).

6. The remote automatic lubrication system for plungers in fracturing trucks according to claim 1, characterized in that, An electromagnetic switch (2) is provided between the lubricating oil tank (8) and the oil outlet pipe (9), and the electromagnetic switch (2) is electrically connected to the control module.

7. A remote automatic lubrication system for plungers in fracturing trucks according to claim 1, characterized in that, A one-way valve (1) is provided at the oil inlet of the lubricating oil tank (8).

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