Low-pressure and high-pressure pipeline for hydraulic fracturing pump truck

Abstract

The utility model provides a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck, which comprises a hydraulic motor, a centrifugal pump, a filter, a low-pressure pump inlet pipeline, a motor water-cooling pipeline, a low-pressure pressure transmitter and a high-pressure pipeline, the centrifugal pump is arranged at the bottom of the hydraulic motor, the filter is arranged at the input end of the centrifugal pump, and the motor water-cooling pipeline is arranged on the high-pressure pipeline. The low-pressure pump inlet pipeline is arranged at the input end of the filter, and the low-pressure transmitter is arranged at the output end of the centrifugal pump. According to the low-pressure and high-pressure pipeline for the hydraulic fracturing pump truck, the hydraulic motor, the centrifugal pump, the filter, the low-pressure pump inlet pipeline, the motor water cooling pipeline, the low-pressure pressure transmitter and other structures are matched with one another, and liquid entering the centrifugal pump can be filtered; impurities are effectively prevented from entering the motor water cooling structure and the plunger pump, the motor and the plunger pump are protected, the stability of equipment operation is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of underground fracturing equipment technology in coal mines, and in particular to a low-pressure and high-pressure pipeline for hydraulic fracturing pump trucks. Background Technology

[0002] In the global energy landscape, oil and gas resources occupy a crucial position. my country has abundant oil and gas reserves, among which low-permeability oil and gas reservoirs, tight gas reservoirs, and shale oil and gas reserves account for a significant proportion. However, the reservoir permeability of these oil and gas reservoirs is extremely low, making it extremely difficult for oil and gas to migrate within them, thus hindering natural extraction and failing to meet the standards for commercial development. In order to effectively develop these unconventional oil and gas resources with huge reserves, hydraulic fracturing technology has emerged and become a key means.

[0003] As the core equipment in hydraulic fracturing operations, the hydraulic fracturing pump truck plays an irreplaceable role in the entire mining process. Generally, a hydraulic fracturing pump truck consists of a chassis assembly, operating platform, control system, radiator assembly, hydraulic pump station, main pump assembly, piping assembly, and hydraulic oil tank. In the pump truck's piping assembly, the low-pressure pipeline is responsible for transporting two streams of liquid: one stream is water used to cool the motor, ensuring that the motor maintains a stable operating temperature during long-term high-load operation, ensuring the reliability and stability of the motor performance; the other stream is water transported to the plunger pump, providing the necessary medium for the normal operation of the plunger pump, ensuring that it can efficiently pressurize the liquid and transport it downhole.

[0004] However, in practical applications, existing low-pressure pipelines have significant defects. Due to the lack of an effective filtration structure, impurities from the external environment (such as sand and metal shavings) and impurities generated within the system (such as rust from pipeline corrosion) are easily mixed into the liquid during the liquid transportation process. These impurities are transported with the liquid to the water-cooling structure of the motor and the inside of the plunger pump. When impurities enter the water-cooling structure of the motor, they can cause blockage of the heat dissipation channels, reduce heat dissipation efficiency, and cause the motor temperature to become too high, thereby affecting the normal operation of the motor and even burning it out in severe cases. When impurities enter the inside of the plunger pump, they can accelerate the wear of internal components of the pump body, reduce the sealing performance of the plunger pump, and shorten its service life.

[0005] Therefore, it is necessary to provide a low-pressure and high-pressure pipeline for hydraulic fracturing pump trucks to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a low-pressure and high-pressure pipeline for hydraulic fracturing pump trucks, solving the problem that existing low-pressure pipelines lack an effective filtration structure, causing impurities to mix into the liquid and affecting the normal operation and service life of the motor and plunger pump.

[0007] To solve the above-mentioned technical problems, this utility model provides a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck, comprising:

[0008] The system includes a hydraulic motor, a centrifugal pump, a filter, a low-pressure pump inlet pipe, a motor water-cooling pipe, a low-pressure transmitter, and a high-pressure pipe. The centrifugal pump is located at the bottom of the hydraulic motor, the filter is located at the input end of the centrifugal pump, the low-pressure pump inlet pipe is located at the input end of the filter, the low-pressure transmitter is located at the output end of the centrifugal pump, the input end of the motor water-cooling pipe and the output end of the low-pressure transmitter are fixedly installed, and the high-pressure pipe and the low-pressure transmitter are fixedly installed.

[0009] Preferably, the centrifugal pump has two output ends.

[0010] Preferably, the filter includes a filter frame, a first connector, a second connector, a sealing cap, a filter element, and a guide frame. The first connector is fixedly installed at the input end of the filter frame, the second connector is fixedly installed at the output end of the filter frame, the input end of the first connector is fixedly installed at the output end of the low-pressure pump inlet pipe, the output end of the second connector is fixedly installed at the input end of the centrifugal pump, the filter element is disposed on the inner side of the filter frame, the sealing cap is fixedly installed at one end of the filter element, and the inner side of the guide frame is disposed at the other end of the inner side of the filter element.

[0011] Preferably, the other end of the inner side of the filter element is threaded with a threaded ring, and the threaded ring is fixedly installed on the outer side of the guide frame.

[0012] Preferably, a sealing gasket is fixedly installed at the other end of the filter element, and one side of the sealing gasket is attached to the inner side of the filter frame.

[0013] Preferably, a plurality of rotating plates are fixedly installed on one side of the threaded ring.

[0014] Preferably, a locking screw is provided inside the sealing cover, and one end of the locking screw is threaded to the inside of the filter frame.

[0015] Compared with related technologies, the low-pressure and high-pressure pipelines for hydraulic fracturing pump trucks provided by this utility model have the following beneficial effects:

[0016] This utility model provides a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck. Through the cooperation of a hydraulic motor, a centrifugal pump, a filter, a low-pressure pump inlet pipeline, a motor water-cooling pipeline, and a low-pressure transmitter, the liquid entering the centrifugal pump can be filtered, effectively preventing impurities from entering the motor water-cooling structure and the plunger pump, thus protecting the motor and the plunger pump and improving the stability and service life of the equipment. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a first embodiment of a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck provided by this utility model;

[0018] Figure 2 A schematic diagram of the structure of a second embodiment of a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck provided by this utility model;

[0019] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the filter frame.

[0020] Figure 4 for Figure 1 The diagram shows a three-dimensional structure of the filter element.

[0021] The following are the labels in the diagram: 1. Hydraulic motor, 2. Centrifugal pump, 3. Filter, 4. Low-pressure pump inlet pipe, 5. Motor water cooling pipe, 6. Low-pressure transmitter, 7. High-pressure pipe, 31. Filter frame, 32. First connector, 33. Second connector, 34. Sealing cover, 35. Locking screw, 36. Filter element, 37. Threaded ring, 38. Rotating plate, 39. Sealing gasket, 30. Guide frame. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] First Embodiment

[0024] Please refer to the following: Figure 1 ,in, Figure 1 This is a schematic diagram of the first embodiment of a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck provided by this utility model. The low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck includes: a hydraulic motor 1, a centrifugal pump 2, a filter 3, a low-pressure pump inlet pipeline 4, a motor water-cooling pipeline 5, a low-pressure pressure transmitter 6, and a high-pressure pipeline 7. The centrifugal pump 2 is located at the bottom of the hydraulic motor 1, the filter 3 is located at the input end of the centrifugal pump 2, the low-pressure pump inlet pipeline 4 is located at the input end of the filter 3, the low-pressure transmitter 6 is located at the output end of the centrifugal pump 2, the input end of the motor water-cooling pipeline 5 and the output end of the low-pressure pressure transmitter 6 are fixedly installed, and the high-pressure pipeline 7 and the low-pressure pressure transmitter 6 are fixedly installed.

[0025] The centrifugal pump 2 is equipped with two output terminals.

[0026] The centrifugal pump 2 has two output ports, which are used to connect the low-pressure transmitter 6 and the plunger pump respectively. This allows the water to be divided into two paths and delivered to the water-cooled structure of the motor and the plunger pump respectively.

[0027] The output ends of the low-pressure transmitter 6 and the centrifugal pump 2 are connected by a flexible hose, and the motor water-cooling pipeline 5 is connected to the motor water-cooling structure.

[0028] The working principle of the low-pressure and high-pressure pipelines for hydraulic fracturing pump trucks provided by this utility model is as follows:

[0029] Liquid enters from the low-pressure pump inlet pipe 4, first passes through filter 3 to remove impurities, and then enters centrifugal pump 2. Driven by hydraulic motor 1, centrifugal pump 2 pressurizes the liquid. Part of the pressurized liquid enters motor water cooling pipe 5 after the pressure is monitored by low-pressure transmitter 6 to dissipate heat from the motor; the other part is delivered to subsequent equipment such as plunger pump to provide working medium.

[0030] Compared with related technologies, the low-pressure and high-pressure pipelines for hydraulic fracturing pump trucks provided by this utility model have the following beneficial effects:

[0031] The hydraulic motor 1, centrifugal pump 2, filter 3, low-pressure pump inlet pipeline 4, motor water-cooling pipeline 5, and low-pressure transmitter 6 work together to filter the liquid entering the centrifugal pump 2, effectively preventing impurities from entering the motor water-cooling structure and plunger pump, protecting the motor and plunger pump, and improving the stability and service life of the equipment.

[0032] Second Embodiment

[0033] Please refer to the following: Figure 2 , Figure 3 and Figure 4 Based on the low-pressure and high-pressure pipelines for a hydraulic fracturing pump truck provided in the first embodiment of this application, the second embodiment of this application proposes another low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0034] Specifically, the second embodiment of this application provides a low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck, which differs in that the filter in the low-pressure and high-pressure pipeline for the hydraulic fracturing pump truck includes a filter frame 31, a first connector 32, a second connector 33, a sealing cap 34, a filter element 36, and a guide frame 30. The first connector 32 is fixedly installed at the input end of the filter frame 31, the second connector 33 is fixedly installed at the output end of the filter frame 31, the input end of the first connector 32 is fixedly installed at the output end of the low-pressure pump inlet pipeline 4, the output end of the second connector 33 is fixedly installed at the input end of the centrifugal pump 2, the filter element 36 is disposed on the inner side of the filter frame 31, the sealing cap 34 is fixedly installed at one end of the filter element 36, and the inner side of the guide frame 30 is disposed at the other end of the inner side of the filter element 36.

[0035] The other end of the inner side of the filter element 36 is threadedly connected to a threaded ring 37, which is fixedly installed on the outer side of the guide frame 30.

[0036] A sealing gasket 39 is fixedly installed at the other end of the filter element 36, and one side of the sealing gasket 39 is attached to the inner side of the filter frame 31.

[0037] Multiple rotating plates 38 are fixedly installed on one side of the threaded ring 37.

[0038] The rotating plate 38 facilitates the rotation of the threaded ring 37 by subsequent users.

[0039] The sealing cover 34 has a locking screw 35 inside, and one end of the locking screw 35 is threaded to the inside of the filter frame 31.

[0040] The working principle of the low-pressure and high-pressure pipelines for hydraulic fracturing pump trucks provided by this utility model is as follows:

[0041] When liquid enters filter 3, it is filtered more evenly through filter element 36 under the guidance of guide frame 30. Filter element 36 is tightly fitted with filter frame 31 through sealing gasket 39 and sealing cover 34 to prevent leakage of unfiltered liquid. After the liquid is filtered, it is transported to the centrifugal pump 2 through second connector 33. When it is necessary to clean or replace filter element 36, the locking screw 35 can be loosened and the sealing cover 34 can be removed to remove filter element 36 from the inner side of filter frame 31. Then, the threaded ring 37 can be rotated by rotating plate 38 to remove the threaded ring 37 from the inside of filter element 36. Then, the impurities inside filter element 36 can be poured out and filter element 36 can be cleaned.

[0042] Compared with related technologies, the low-pressure and high-pressure pipelines for hydraulic fracturing pump trucks provided by this utility model have the following beneficial effects:

[0043] The filter frame 31, filter element 36, threaded ring 37, and guide frame 30 work together to facilitate the removal of impurities inside the filter frame 31 during use. This not only improves the convenience of cleaning impurities but also ensures timely removal, guaranteeing the filtration effect of the filter element 36 and thus ensuring the quality of liquid delivery in both low-pressure and high-pressure pipelines.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck, characterized in that, include: The system includes a hydraulic motor, a centrifugal pump, a filter, a low-pressure pump inlet pipe, a motor water-cooling pipe, a low-pressure transmitter, and a high-pressure pipe. The centrifugal pump is located at the bottom of the hydraulic motor, the filter is located at the input end of the centrifugal pump, the low-pressure pump inlet pipe is located at the input end of the filter, the low-pressure transmitter is located at the output end of the centrifugal pump, the input end of the motor water-cooling pipe and the output end of the low-pressure transmitter are fixedly installed, and the high-pressure pipe and the low-pressure transmitter are fixedly installed.

2. The low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck according to claim 1, characterized in that, The centrifugal pump has two output terminals.

3. The low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck according to claim 1, characterized in that, The filter includes a filter frame, a first connector, a second connector, a sealing cap, a filter element, and a guide frame. The first connector is fixedly installed at the input end of the filter frame, and the second connector is fixedly installed at the output end of the filter frame. The input end of the first connector is fixedly installed at the output end of the low-pressure pump inlet pipe, and the output end of the second connector is fixedly installed at the input end of the centrifugal pump. The filter element is disposed on the inner side of the filter frame, the sealing cap is fixedly installed at one end of the filter element, and the inner side of the guide frame is disposed at the other end of the inner side of the filter element.

4. The low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck according to claim 3, characterized in that, The other end of the inner side of the filter element is threaded with a threaded ring, which is fixedly installed on the outer side of the guide frame.

5. A low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck according to claim 4, characterized in that, A sealing gasket is fixedly installed at the other end of the filter element, and one side of the sealing gasket is attached to the inner side of the filter frame.

6. A low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck according to claim 4, characterized in that, Multiple rotating plates are fixedly installed on one side of the threaded ring.

7. A low-pressure and high-pressure pipeline for a hydraulic fracturing pump truck according to claim 3, characterized in that, The sealing cover has a locking screw inside, and one end of the locking screw is threaded into the inside of the filter frame.

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