Fluid end assembly and pump

Abstract

The utility model discloses a fluid end assembly and a pump, and relates to the fields of oil gas, mines and the like. A fluid end assembly comprising: at least one fluid end module; each fluid end module comprises at least one valve box, and each valve box is provided with at least one main channel; the at least one fluid end module is arranged in the first direction, all the main channels of the at least one fluid end module are arranged in the first direction, and each main channel is used for being aligned with a plunger of a fluid end assembly. The problems that the overall maintenance or replacement of the fluid end affects the operation efficiency, and the construction cost is increased can be solved.

Description

Technical Field

[0001] This application belongs to the technical fields of oil and gas, mining, etc., and specifically relates to a hydraulic end assembly and pump. Background Technology

[0002] In some fracturing pumps, the hydraulic end is a single, integral structure. Failure in any part of it renders the entire hydraulic end unusable. As a valuable and vulnerable component in fracturing equipment, frequent replacement of the entire hydraulic end not only leads to unauthorized downtime and reduced operational efficiency but also significantly increases construction costs. Utility Model Content

[0003] The purpose of this application is to provide a hydraulic end assembly and pump that can solve problems such as the impact of overall maintenance or replacement of the hydraulic end on work efficiency and increased construction costs.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] This application provides a hydraulic end assembly, including: at least one hydraulic end module;

[0006] Each of the hydraulic end modules includes at least one valve box, and each valve box is provided with at least one main channel;

[0007] The at least one hydraulic end module is disposed along a first direction, and all the main channels of the at least one hydraulic end module are arranged along the first direction, each main channel being used to align with the plunger of the hydraulic end assembly.

[0008] This application embodiment also provides a pump, including: a power end assembly and the above-mentioned hydraulic end assembly;

[0009] The plunger of the hydraulic end assembly is connected to the power end assembly.

[0010] The hydraulic end assembly in this application includes at least one hydraulic end module. When a certain area is damaged or fails, the hydraulic end module can be repaired or replaced separately without repairing or replacing the entire hydraulic end assembly, thereby reducing the difficulty and cost of repair or replacement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the hydraulic end assembly disclosed in the embodiments of this application;

[0012] Figure 2 This is a cross-sectional schematic diagram of the hydraulic end module of the hydraulic end assembly disclosed in the embodiments of this application;

[0013] Figure 3 This is a schematic diagram of the hydraulic end module of the hydraulic end assembly disclosed in the embodiments of this application;

[0014] Figure 4 This is a cross-sectional schematic diagram of the valve box disclosed in the embodiments of this application;

[0015] Figure 5 This is a schematic diagram of the structure of the connecting plate disclosed in an embodiment of this application;

[0016] Figure 6 This is a schematic diagram of the power end assembly and connecting plate disclosed in the embodiments of this application;

[0017] Figure 7 This is a schematic diagram of the pump structure disclosed in an embodiment of this application;

[0018] Figure 8 This is a schematic diagram of the structure of the common fastener for the hydraulic end module disclosed in the embodiments of this application;

[0019] Figure 9 This is a schematic diagram of the integral hydraulic end disclosed in the embodiments of this application;

[0020] Figure 10 This is a cross-sectional schematic diagram of the hydraulic end in which the valve box and packing box are integrally set according to the embodiments of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 01-Hydraulic end assembly;

[0023] 10-Hydraulic end module;

[0024] 11-Valve box; 111-Main channel; 112-First fixing tank; 113-Second fixing tank; 114-Inlet channel; 115-Outlet channel;

[0025] 12-Packaging box;

[0026] 13-Valve seat; 14-Suction valve assembly; 15-Discharge valve assembly; 16-Plunger;

[0027] 20 - Connecting plate; 21 - Mounting hole; 211 - Flared opening; 22 - Positioning hole;

[0028] 31-First fastener; 32-Second fastener; 33-Third fastener;

[0029] 02-Powertrain Assembly. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0033] refer to Figures 1 to 10 This application discloses a hydraulic end assembly 01, which includes at least one hydraulic end module 10, and the at least one hydraulic end module 10 is disposed along a first direction. Optionally, the hydraulic end assembly 01 may include one hydraulic end module 10, or it may include multiple hydraulic end modules 10, and the multiple hydraulic end modules 10 may be disposed side by side along the first direction.

[0034] Each hydraulic end module 10 may include at least one valve housing 11. Optionally, each hydraulic end module 10 may include an integral valve housing 11, or it may include multiple individual valve housings 11. For example, when a hydraulic end assembly 01 includes a hydraulic end module 10, and the hydraulic end module 10 includes an integral valve housing 11, then the hydraulic end assembly 01 uses an integral valve housing 11. The valve housing 11 may include a valve housing portion and a packing box portion, such as... Figure 10As shown; when the hydraulic end assembly 01 includes a hydraulic end module 10, and the hydraulic end module 10 includes multiple individual valve boxes 11, the hydraulic end assembly 01 uses multiple individual valve boxes 11; when the hydraulic end assembly 01 includes multiple hydraulic end modules 10, and each hydraulic end module 10 includes an integral valve box 11, the hydraulic end assembly 01 uses multiple individual valve boxes 11; when the hydraulic end assembly 01 includes multiple hydraulic end modules 10, and each hydraulic end module 10 includes multiple individual valve boxes 11, the hydraulic end assembly 01 uses multiple sets of valve boxes 11, and each set contains multiple individual valve boxes 11.

[0035] Each valve box 11 may be provided with at least one main channel 111 to accommodate components such as valve seat 13, valve assembly, and plunger 16 of the hydraulic end assembly 01, so that the plunger 16, valve assembly and valve seat 13 can be located in the same direction. Compared with the form in the related art where the valve assembly and plunger 16 are vertically distributed, the valve box 11 in this embodiment can eliminate the intersection line formed by vertical distribution, thereby effectively alleviating the problem of intersection line erosion and improving the service life of valve box 11.

[0036] All the main channels 111 of at least one hydraulic end module 10 are arranged along a first direction, and each main channel 111 is used to align with the plunger 16 of the hydraulic end assembly 01, so that the plunger 16 can be moved into or out of the corresponding main channel 111 to pressurize the fluid in the main channel 111.

[0037] Based on the above settings, the hydraulic end assembly 01 in this application embodiment includes at least one hydraulic end module 10. When a certain area is damaged or fails, the hydraulic end module 10 can be repaired or replaced separately without repairing or replacing the entire hydraulic end assembly 01, thereby reducing the difficulty and cost of repair or replacement.

[0038] refer to Figure 2 In some embodiments, the hydraulic end module 10 may further include a valve seat 13, an intake valve assembly 14, an exhaust valve assembly 15, and a plunger 16. The exhaust valve assembly 15, valve seat 13, and intake valve assembly 14 are sequentially arranged along the axial direction of the hydraulic end module 10 in the main channel 111, and at least a portion of the plunger 16 is movably disposed in the main channel 111 and is arranged opposite to the intake valve assembly 14.

[0039] Based on the above configuration, during the reciprocating movement of the plunger 16, the suction valve assembly 14 and the discharge valve assembly 15 can be periodically opened or closed, thereby allowing fluid to be drawn into the main channel 111 and pressurized to be discharged from the main channel 111.

[0040] In some embodiments, the hydraulic end assembly 01 may further include a connecting plate 20 for connection to the power end assembly 02 of the pump. Optionally, the connecting plate 20 may be installed to the power end assembly 02 using fastening bolts to ensure the installation stability of the connecting plate 20.

[0041] like Figures 5 to 7 As shown, the connecting plate 20 may have at least one mounting hole 21, and at least one packing box 12 of the hydraulic end module 10 is inserted into the corresponding mounting hole 21. Multiple first fasteners 31 securely connect the connecting plate 20 to the at least one hydraulic end module 10. Based on this, the hydraulic end module 10 can be limited by the hole wall of the mounting hole 21 to prevent it from shaking freely. The first fasteners 31 can be used to install the hydraulic end module 10 onto the connecting plate 20 to ensure the installation stability of the hydraulic end module 10.

[0042] In addition, after the packing box 12 is inserted into the corresponding mounting hole 21, the end face of at least one hydraulic end module 10 can also abut against the connecting plate 20, so as to block and limit the hydraulic end module 10 through the connecting plate 20, thereby further improving the installation stability of the hydraulic end module 10.

[0043] In some embodiments, one of the surfaces of the connecting plate 20 and the side of the valve box 11 may be provided with a positioning hole 22, such as... Figure 5 As shown, the other component may be equipped with a positioning pin, which is inserted into the positioning hole 22. Based on this, with the cooperation of the positioning pin and the positioning hole 22, the positioning between the hydraulic end module 10 and the connecting plate 20 can be achieved, so as to ensure the positional accuracy of the hydraulic end module 10 during installation.

[0044] Optionally, the number of locating pins and locating holes 22 can be one or more, which can be selected according to actual needs.

[0045] Continue to refer to Figure 5 In some embodiments, the end of the mounting hole 21 may be provided with a flared end 211, which is located on the plate surface of the connecting plate 20 facing the valve box 11. Specifically, a chamfer is provided at the opening of the mounting hole 21 to form the flared end 211. Based on this, during the installation of the hydraulic end module 10, the flared end 211 can guide the packing box 12 of the hydraulic end module 10, making it easier to insert the packing box 12 into the mounting hole 21, and effectively alleviating the problem of the opening of the mounting hole 21 scratching the packing box 12.

[0046] In other embodiments, the connecting plate 20 may be omitted, and the hydraulic end module 10 may be installed using the second fastener 32. The hydraulic end assembly 01 may include multiple hydraulic end modules 10, and adjacent hydraulic end modules 10 are connected to the pump's power end assembly 02 using a common second fastener 32. This reduces the number of second fasteners 32 used while ensuring the installation stability of the hydraulic end modules 10, thus lowering costs.

[0047] Optionally, such as Figure 8 As shown, in each hydraulic end module 10 located in the central region along the first direction (i.e., hydraulic end modules 10 not at the two ends), the edge of the valve box 11 opposite to the end face of the plunger 16 may be provided with a first groove, and the bottom of the first groove may be provided with a second groove. The first groove and the second groove are respectively provided with openings on the outer peripheral surface of the valve box 11. Based on this, after multiple hydraulic end modules 10 are arranged side by side along the first direction, the openings of the first grooves of two adjacent hydraulic end modules 10 interlock to form a first fixing groove 112. At the same time, the openings of the second grooves of two adjacent hydraulic end modules 10 interlock to form a first fixing hole. A second fastener 32 is inserted into the first fixing hole, and the cap end of the second fastener 32 presses against the bottom of the grooves of the two adjacent first grooves.

[0048] Based on the above configuration, a first fixing groove 112 and a first fixing hole are formed between the valve boxes 11 of two adjacent hydraulic end modules 10. The second fastener 32 is inserted into the first fixing groove 112 and the first fixing hole and presses the bottom of the first fixing groove 112, thereby achieving the fastening effect on the two adjacent hydraulic end modules 10. This not only ensures the installation stability of the two adjacent hydraulic end modules 10, but also reduces the number of second fasteners 32 used by sharing them, which is beneficial to reducing costs.

[0049] It should be noted that the second fastener 32 can be directly connected to the power end assembly 02 to install each hydraulic end module 10 to the power end assembly 02.

[0050] In addition, in each hydraulic end module 10 located at both ends along the first direction (i.e., the two hydraulic end modules 10 at both ends), the valve box 11 may also be provided with a second fixing groove 113 on the end face away from the plunger 16. The bottom of the second fixing groove 113 may be provided with a second fixing hole, and a third fastener 33 is inserted through the second fixing hole, and the cap end of the third fastener 33 presses against the bottom of the second fixing groove 113.

[0051] Based on the above configuration, the third fastener 33 is inserted into the second fixing groove 113 and the second fixing hole, which can press the bottom of the second fixing groove 113, thereby achieving the fastening effect on the hydraulic end module 10 at the end, so as to ensure the installation stability of the hydraulic end module 10.

[0052] In other embodiments, such as Figure 9 As shown, the hydraulic end assembly 01 may include a hydraulic end module 10. In order to install the hydraulic end module 10, in this embodiment, the valve box 11 of the hydraulic end module 10 may be provided with a third fixing groove on the end face away from the plunger 16. The bottom of the third fixing groove may be provided with a third fixing hole. A fourth fastener may be inserted into the third fixing hole, and the cap end of the fourth fastener may press against the bottom of the third fixing groove. In this way, under the fastening action of the fourth fastener, the installation stability of the hydraulic end module 10 as a whole can be guaranteed.

[0053] In some embodiments, the valve box 11 may further be provided with an inlet channel 114 and an outlet channel 115, wherein the inlet channel 114 and the outlet channel 115 are respectively connected to the main channel 111, and the inlet channel 114 is correspondingly arranged with the valve seat 13, and the outlet channel 115 is correspondingly arranged with the discharge valve assembly 15. Optionally, the valve seat 13 may be located in the low-pressure chamber of the main channel 111, and the inlet channel 114 is connected to the low-pressure chamber; the discharge valve assembly 15 may be located in the high-pressure chamber of the main channel 111, and the outlet channel 115 is connected to the high-pressure chamber.

[0054] Based on the above configuration, fluid can be drawn into the low-pressure chamber through the inlet channel 114, and the pressurized fluid can enter the outlet channel 115 through the high-pressure chamber and be discharged.

[0055] In some embodiments, the main channel 111 may have an intermediate wall between the valve seat 13 and the suction valve assembly 14, the intermediate wall being a closed surface.

[0056] Optionally, a limiting annular surface may be provided within the main channel 111, and the valve seat 13 may abut against the limiting annular surface to limit the valve seat 13. A sealing annular surface may also be provided within the main channel 111, located on the side of the limiting annular surface closer to the plunger 16, and the suction valve assembly 14 may be disposed on the sealing annular surface. Based on this, an intermediate wall surface can be formed between the limiting annular surface and the sealing annular surface.

[0057] Because the intermediate wall is a closed surface, meaning there are no through holes, it prevents the formation of intersection lines, effectively mitigating fluid erosion and extending the service life of the valve box 11. It should be noted that because the pressurized fluid contacts the closed intermediate wall, it does not come into contact with the intersection line area, thus reducing the likelihood of erosion.

[0058] In some embodiments, the hydraulic end module 10 may further include at least one packing box 12, which is correspondingly disposed in at least one valve box 11. Optionally, the packing box 12 may be detachably installed in the corresponding valve box 11 for easy maintenance or replacement; of course, the packing box 12 and the valve box 11 may also be integrally disposed for ease of manufacturing.

[0059] Furthermore, the packing box 12 may be provided with a plunger channel, which is connected to the main channel 111. In this way, the plunger channel and the main channel 111 can jointly guide the plunger 16 so that the plunger 16 can move back and forth smoothly and pressurize the fluid.

[0060] The hydraulic end module 10 may also include a wear-resistant sleeve, which is disposed at the junction of the plunger channel and the main channel 111 and sleeved on the outside of the plunger 16. In this way, the wear-resistant sleeve can seal the junction of the plunger channel and the main channel 111, effectively preventing fluid leakage in this area. In addition, the wear-resistant sleeve can also achieve sealing between the plunger 16 and the packing box 12 and the valve box 11 respectively, to prevent fluid leakage.

[0061] Optionally, the inner wall of at least one of the plunger channel and the main channel 111 may be provided with a sealing surface, and the outer peripheral surface of the wear-resistant sleeve may be sealed to the sealing surface.

[0062] Based on the aforementioned hydraulic end assembly 01, this application also discloses a pump, which includes a power end assembly 02 and the aforementioned hydraulic end assembly 01; wherein, the plunger 16 of the hydraulic end assembly 01 is connected to the power end assembly 02, so that the power end assembly 02 drives the plunger 16 to reciprocate, thereby pressurizing the fluid. Optionally, the pump can be a plunger pump.

[0063] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A hydraulic end assembly, characterized in that, include: At least one hydraulic end module (10); Each of the hydraulic end modules (10) includes at least one valve box (11), and each valve box (11) is provided with at least one main channel (111). The at least one hydraulic end module (10) is disposed along a first direction, and all the main channels (111) of the at least one hydraulic end module (10) are arranged along the first direction, each of the main channels (111) being aligned with the plunger (16) of the hydraulic end assembly (01).

2. The hydraulic end assembly according to claim 1, characterized in that, The hydraulic end module (10) also includes a valve seat (13), an intake valve assembly (14), an exhaust valve assembly (15), and a plunger (16). The discharge valve assembly (15), the valve seat (13), and the suction valve assembly (14) are sequentially arranged in the main channel (111) along the axial direction of the hydraulic end module (10). At least a portion of the plunger (16) is movably arranged in the main channel (111) and is arranged opposite to the suction valve assembly (14).

3. The hydraulic end assembly according to claim 1, characterized in that, The hydraulic end assembly (01) also includes a connecting plate (20) for connection to the power end assembly (02) of the pump, and a plurality of first fasteners (31). The connecting plate (20) is provided with at least one mounting hole (21), and the packing box (12) of the at least one hydraulic end module (10) is inserted into the corresponding mounting hole (21). Multiple first fasteners (31) securely connect the at least one hydraulic end module (10) to the connecting plate (20).

4. The hydraulic end assembly according to claim 3, characterized in that, The connecting plate (20) has a positioning hole (22) on one side and the valve box (11) on the other side, and the positioning pin is inserted into the positioning hole (22).

5. The hydraulic end assembly according to claim 3, characterized in that, The mounting hole (21) has a flared end (211) at its end, and the flared end (211) is located on the side of the connecting plate (20) facing the valve box (11).

6. The hydraulic end assembly according to claim 1, characterized in that, The hydraulic end assembly (01) includes a plurality of the hydraulic end modules (10), and two adjacent hydraulic end modules (10) are connected to the power end assembly (02) of the pump by a common second fastener (32).

7. The hydraulic end assembly according to claim 6, characterized in that, In each of the hydraulic end modules (10) located in the central region along the first direction, a first groove is provided at the edge of the valve box (11) opposite to the end face of the plunger (16), a second groove is provided at the bottom of the first groove, and the first groove and the second groove are respectively provided with openings on the outer peripheral surface of the valve box (11). The openings of the first groove of two adjacent hydraulic end modules (10) are interlocked to form a first fixing groove (112), and the openings of the second groove of two adjacent hydraulic end modules (10) are interlocked to form a first fixing hole. A second fastener (32) is inserted into the first fixing hole, and the cap end of the second fastener (32) presses against the bottom of the groove of the two adjacent first grooves. In each of the hydraulic end modules (10) located in the two end regions along the first direction, the valve box (11) is provided with a second fixing groove (113) on the end face opposite to the plunger (16), the bottom of the second fixing groove (113) is provided with a second fixing hole, a third fastener (33) is inserted in the second fixing hole, and the cap end of the third fastener (33) presses against the bottom of the second fixing groove (113).

8. The hydraulic end assembly according to claim 1, characterized in that, The hydraulic end assembly (01) includes a hydraulic end module (10). The valve box (11) of the hydraulic end module (10) is provided with a plurality of third fixing grooves on the end face opposite to the plunger (16). The bottom of the third fixing groove is provided with a third fixing hole. A fourth fastener is inserted through the third fixing hole, and the cap end of the fourth fastener presses against the bottom of the third fixing groove.

9. The hydraulic end assembly according to claim 2, characterized in that, The valve box (11) is also provided with an inlet channel (114) and an outlet channel (115). The inlet channel (114) and the outlet channel (115) are respectively connected to the main channel (111). The inlet channel (114) is correspondingly arranged with the valve seat (13), and the outlet channel (115) is correspondingly arranged with the discharge valve assembly (15).

10. The hydraulic end assembly according to claim 9, characterized in that, The main channel (111) has an intermediate wall between the valve seat (13) and the suction valve assembly (14), the intermediate wall being a closed surface.

11. The hydraulic end assembly according to claim 1, characterized in that, The hydraulic end module (10) also includes at least one packing box (12), which is correspondingly disposed in the at least one valve box (11). The packing box (12) is provided with a plunger channel, which is connected to the main channel (111); The hydraulic end module (10) also includes a wear-resistant sleeve, which is located at the junction of the plunger channel and the main channel (111) and is fitted on the outside of the plunger (16).

12. A pump, characterized in that, include: The power end assembly (02) and the hydraulic end assembly (01) according to any one of claims 1 to 11; The plunger (16) of the hydraulic end assembly (01) is connected to the power end assembly (02).

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