Valve box, fluid end and pump
By designing a sidewall structure in the valve box that connects the inlet and outlet channels with the main channel, the problem of erosion at the intersection line of the hydraulic end valve box is solved, extending the service life of the valve box and improving fluid flow and flow rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-21
AI Technical Summary
The valve box of the existing hydraulic end is easily eroded at the intersection line, which affects its service life.
Design a valve box structure in which the inlet and outlet channels are connected to the main channel and extend along the side wall of the valve box to avoid forming an intersection line, ensuring that the fluid can be normally drawn in, pressurized and discharged, and preventing the intersection line area from being eroded.
It extends the service life of the valve box, avoids erosion in the intersection area, and improves the smoothness of fluid flow and fluid flow rate.
Smart Images
Figure CN224149759U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of oil and gas, mining, etc., and specifically relates to a valve box, hydraulic end and pump. Background Technology
[0002] In some hydraulic terminals in related technologies, the valve box is provided with a valve chamber, an inlet channel, and an outlet channel, and the axes of the inlet channel and the outlet channel are perpendicular to the axis of the valve chamber. This causes the inlet channel and the outlet channel to form an intersection line with the valve chamber. During the operation of the hydraulic terminal, the high-pressure fluid will cause erosion at the intersection line, affecting the service life of the valve box. Utility Model Content
[0003] The purpose of this application is to provide a valve box, hydraulic end, and pump that can solve problems such as easy erosion at the intersection of valve boxes.
[0004] To solve the above-mentioned technical problems, this application is implemented as follows:
[0005] This application provides a valve box, including: a valve box body;
[0006] The valve box body is provided with a main channel, at least one liquid inlet channel and at least one liquid outlet channel. The main channel extends along the axial direction of the valve box and passes through both ends of the valve box body. The at least one liquid inlet channel is located on the side wall of the valve box body and extends toward the main channel and communicates with the main channel. The at least one liquid outlet channel is located on the side wall of the valve box body and extends toward the main channel and communicates with the main channel.
[0007] This application also provides a hydraulic end, including the valve box described above.
[0008] This application also provides a pump, including the hydraulic end described above.
[0009] In this embodiment, the main channel can accommodate components such as valve seats, valve assemblies, and plungers, allowing fluid (e.g., fracturing fluid) to be drawn into or discharged from the valve box through the opening or closing of the valve assembly during the reciprocating movement of the plunger. Furthermore, at least one inlet channel and at least one outlet channel are respectively connected to the main channel, allowing fluid to be input into the main channel through the inlet channel and discharged from the main channel after being pressurized. Based on this, this embodiment improves the valve box structure, eliminating intersecting lines within the valve box. This prevents erosion of the intersecting line area while ensuring fluid can be drawn in, pressurized, and discharged, thereby extending the service life of the valve box. Attached Figure Description
[0010] Figure 1This is a cross-sectional schematic diagram of the valve box disclosed in the embodiments of this application;
[0011] Figure 2 This is a first structural schematic diagram of the valve box disclosed in an embodiment of this application;
[0012] Figure 3 This is a schematic diagram of the second structure of the valve box disclosed in the embodiments of this application;
[0013] Figure 4 This is a partial cross-sectional schematic diagram of the hydraulic end disclosed in the embodiments of this application.
[0014] Explanation of reference numerals in the attached figures:
[0015] 10-valve box; 11-valve box body;
[0016] 111-Main channel; 111a-High pressure chamber; 111b-Low pressure chamber; 111c-Alternating chamber; 111d-Stepped structure; 112-Inlet channel; 113-Outlet channel; 114-First end face; 1141-First mounting hole; 115-Second end face; 1151-Third mounting hole; 116-Outer peripheral surface; 1161-Second mounting hole;
[0017] 20-Plunger;
[0018] 30 - Valve seat;
[0019] 40 - Inhalation valve assembly;
[0020] 50 - Discharge valve components. Detailed Implementation
[0021] 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.
[0022] 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.
[0023] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.
[0024] refer to Figures 1 to 4 This application discloses a valve box 10, which may include a valve box body 11. The valve box body 11 can provide a mounting and bearing base for other components of the hydraulic end. For example, components such as the plunger 20, valve body, and packing box of the hydraulic end can be installed on the valve box body 11. The valve body may include an intake valve assembly 40, an exhaust valve assembly 50, etc.
[0025] The valve body 11 may be provided with a main channel 111, at least one inlet channel 112, and at least one outlet channel 113. The main channel 111 may extend along the axial direction of the valve body 10 and penetrate both ends of the valve body 11. The main channel 111 can accommodate components such as the valve seat and valve assembly of the hydraulic end, and can also allow the plunger 20 to reciprocate into or out of the main channel 111. Thus, during the reciprocating movement of the plunger 20, in conjunction with the periodic opening or closing of the valve body, fluid can be drawn into the main channel 111 and pressurized within the main channel 111.
[0026] Furthermore, at least one inlet channel 112 is provided on the side wall of the valve body 11 and extends toward the main channel 111, and each inlet channel 112 is connected to the main channel 111. Thus, during the reciprocating movement of the plunger 20, when the inlet part of the valve body (e.g., the suction valve assembly 40, etc.) is opened, fluid can flow into the main channel 111 through at least one inlet channel 112, so that the fluid can be pressurized in the main channel 111.
[0027] At least one liquid outlet channel 113 is provided on the side wall of the valve body 11 and extends toward the main channel 111, and each liquid outlet channel 113 is connected to the main channel 111. Thus, during the reciprocating movement of the plunger 20, when the liquid outlet part of the valve body (e.g., the drain valve assembly) is opened, the pressurized fluid can flow into the liquid outlet channel 113 through the main channel 111 and finally be discharged through the liquid outlet channel 113.
[0028] In this embodiment, the main channel 111 can accommodate components such as the valve seat 30, valve assembly, and plunger 20, so that fluid (e.g., fracturing fluid) can be drawn into or discharged from the valve box 10 by opening or closing the valve assembly during the reciprocating movement of the plunger 20. Furthermore, at least one inlet channel 112 and at least one outlet channel 113 are respectively connected to the main channel 111, so that fluid is input into the main channel 111 through the inlet channel 112 and discharged from the main channel 111 after being pressurized through the outlet channel 113. Based on this, the structure of the valve box 10 is improved in this embodiment, so that the valve box 10 no longer has intersecting lines, ensuring that the fluid can be drawn in, pressurized, and discharged without erosion of the intersecting line area, thereby extending the service life of the valve box 10.
[0029] Optionally, the inlet channel 112 and the outlet channel 113 are spaced apart along the axis of the valve box 10. This effectively prevents the inlet channel 112 and the outlet channel 113 from interfering with each other and affecting normal arrangement. It should be noted that the distance between the inlet channel 112 and the outlet channel 113 can be determined according to design requirements. For example, while ensuring that they do not interfere with each other, the distance between them can be minimized. This facilitates the integration and miniaturization of the valve box 10 and reduces the overall space occupied by the valve box 10.
[0030] In some embodiments, the axis of each liquid inlet channel 112 can be set perpendicular to the axis of the main channel 111; of course, the axis of each liquid inlet channel 112 can also be set non-perpendicular to the axis of the main channel 111, which can be set according to the actual working conditions.
[0031] Optionally, when the axis of the inlet channel 112 is not perpendicular to the axis of the main channel 111, the inlet channel 112 can extend at an angle away from the outlet channel 113 so as to form a sufficiently large space between the two without interference, and the pipes connecting the two to the outside will not interfere with each other.
[0032] In some more specific embodiments, the inlet channel 112 may also extend in the horizontal plane and extend obliquely away from the outlet channel 113 to facilitate liquid inflow from the side. Of course, the outlet channel 113 may also extend in the horizontal plane to facilitate liquid outflow from the side.
[0033] In some more specific embodiments, one end of the main channel 111 along its own axis can be used to be positioned opposite to the plunger 20 of the hydraulic end, so that the end of the plunger 20 can be moved into the main channel 111 from one end to pressurize the fluid in the main channel 111.
[0034] Each inlet channel 112 extends obliquely from the axis of the valve box 10 to the side wall of the valve box body 11, and towards one end of the main channel 111. Based on this, the inlet channel 112 can be obliquely extended towards the side away from the outlet channel 113, thereby effectively avoiding interference between the inlet channel 112 and the outlet channel 113, and also avoiding interference between external pipes that are connected to the inlet channel 112 and the outlet channel 113 respectively.
[0035] In addition, the inclined arrangement of the liquid inlet channel 112 allows the fluid to be drawn into the main channel 111 at an angle, which to some extent improves the smoothness of fluid flow.
[0036] Optionally, the angle between the axis of the liquid inlet channel 112 and the axis of the valve box 10 can be in the range of 40° to 80°, such as 40°, 45°, 50°, 60°, 75°, 80°, etc. Of course, other degrees are also possible, which are not specifically limited here.
[0037] In some embodiments, the valve body 11 may be provided with a plurality of liquid inlet channels 112, which are respectively connected to the main channel 111 and are arranged circumferentially along the valve body 10. Based on this, a plurality of liquid inlet channels 112 can be provided on the outer peripheral wall of the valve body 11 to deliver fluid into the main channel 111 through the plurality of liquid inlet channels 112, thereby increasing the fluid intake flow rate and improving the uniformity of fluid entering the main channel 111.
[0038] For example, multiple liquid inlet channels 112 can be evenly distributed along the circumference of the valve box 10.
[0039] In addition, the valve body 11 may also be provided with multiple liquid outlet channels 113, which are respectively connected to the main channel 111 and are arranged circumferentially along the valve body 10. Based on this, multiple liquid outlet channels 113 can be provided on the outer peripheral wall of the valve body 11 to discharge the pressurized fluid in the main channel 111 through the multiple liquid outlet channels 113, thereby increasing the discharge flow rate of the fluid and improving the uniformity of the fluid discharge from the main channel 111.
[0040] For example, multiple liquid outlet channels 113 can be evenly distributed along the circumference of the valve box 10.
[0041] In some embodiments, the main channel 111 may include a high-pressure chamber 111a, a low-pressure chamber 111b, and an alternating chamber 111c (i.e., a plunger chamber) arranged sequentially along the axial direction of the valve box 10, wherein at least one liquid outlet channel 113 is connected to the high-pressure chamber 111a, at least one liquid inlet channel 112 is connected to the low-pressure chamber 111b, and the alternating chamber 111c is arranged opposite to the plunger 20 at the hydraulic end.
[0042] Based on the above configuration, the reciprocating movement of the plunger 20 allows the fluid to flow into the low-pressure chamber 111b via the inlet channel 112, and then into the alternating chamber 111c via the low-pressure chamber 111b, so that the fluid can be pressurized in the alternating chamber 111c; the pressurized fluid flows into the high-pressure chamber 111a, and is finally discharged through the outlet channel 113.
[0043] In some embodiments, the cross-sectional area of the alternating cavity 111c can be smaller than that of the low-pressure cavity 111b, so that the main channel 111 forms a stepped structure 111d on the inner wall at the junction of the low-pressure cavity 111b and the alternating cavity 111c. Based on this, the stepped structure 111d can be used to axially limit part of the valve body structure, thereby improving the stability of part of the valve body structure.
[0044] For example, the valve seat 30 in the valve body can be located at the junction of the alternating chamber 111c and the low-pressure chamber 111b in the main channel 111, and the side end face of the valve seat 30 abuts against the step structure 111d, thereby axially limiting the valve seat 30 through the step structure 111d.
[0045] Optionally, along the axial direction of the valve box 10, the alternating cavity 111c may include multiple cavity segments with different cross-sectional areas. This allows for the formation of a stepped or conical surface on the inner wall of the alternating cavity 111c, which facilitates the limiting of certain parts of the valve body structure.
[0046] For example, the suction valve assembly 40 in the valve body can be disposed in the alternating cavity 111c, so that the suction valve assembly 40 can be limited by the stepped surface or conical surface provided on the inner wall of the alternating cavity 111c.
[0047] In some embodiments, the valve box body 11 may include a first end face 114, a second end face 115, and an outer peripheral surface 116. The first end face 114 and the second end face 115 are respectively disposed at both ends of the valve box body 11 along the axial direction of the valve box 10, and the outer peripheral surface 116 connects the first end face 114 and the second end face 115 and is disposed along the circumference of the valve box 10.
[0048] Optionally, the valve box body 11 can be a columnar structure, such as a cylindrical structure, an elliptical cylindrical structure, a prism structure, etc. Of course, it can also be other shapes, which are not specifically limited here.
[0049] The first end face 114 may be provided with a plurality of first mounting holes 1141, which are distributed on the outer periphery of the main channel 111. The plurality of first mounting holes 1141 are used to install first fasteners, which are used to fasten the packing box of the hydraulic end to the first end face 114. Based on this, under the fastening action of the first fasteners, the packing box can be firmly installed to the side of the valve box body 11, thereby ensuring the installation stability of the packing box.
[0050] Optionally, the first mounting hole 1141 can be a threaded hole, and correspondingly, the first fastener can be a bolt, screw, or other component.
[0051] The outer peripheral surface 116 of the valve box body 11 may be provided with a plurality of second mounting holes 1161, which are used to install second fasteners. The second fasteners are used to fasten the high-pressure manifold at the hydraulic end to the outer peripheral surface 116. Based on this, under the fastening action of the second fasteners, the high-pressure manifold can be firmly installed to the outer periphery of the valve box body 11, thereby ensuring the installation stability of the high-pressure manifold.
[0052] Optionally, the second mounting hole 1161 can be a threaded hole, and correspondingly, the second fastener can be a bolt, screw, or other component.
[0053] The second end face 115 of the valve box body 11 may be provided with a plurality of third mounting holes 1151. The plurality of third mounting holes 1151 are distributed on the outer periphery of the main channel 111 and are used to install third fasteners. The third fasteners are used to fasten the valve box body 11 to the connecting plate of the hydraulic end. Based on this, under the fastening action of the third fasteners, the valve box body 11 can be firmly installed to the connecting plate, thereby ensuring the installation stability of the valve box body 11.
[0054] Based on the valve box 10 described above, this application also discloses a hydraulic end, which includes the valve box 10 described above.
[0055] This application also discloses a pump, which includes the above-described hydraulic end.
[0056] 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 valve chest, characterized in that include: Valve box body (11); The valve box body (11) is provided with a main channel (111), at least one inlet channel (112) and at least one outlet channel (113). The main channel (111) extends along the axial direction of the valve box (10) and penetrates both ends of the valve box body (11) for accommodating the valve seat and valve assembly of the hydraulic end. The at least one inlet channel (112) is located on the side wall of the valve box body (11) and extends toward the main channel (111) and communicates with the main channel (111). The at least one outlet channel (113) is located on the side wall of the valve box body (11) and extends toward the main channel (111) and communicates with the main channel (111).
2. The valve chest of claim 1, wherein, One end of the main channel (111) along the axial direction is used to be positioned opposite to the plunger (20) of the hydraulic end; Each of the liquid inlet channels (112) extends obliquely from the axis of the valve box (10) to the side wall of the valve box body (11) and toward one end of the main channel (111).
3. The valve chest of claim 1, wherein, The axis of each of the liquid inlet channels (112) is perpendicular to the axis of the valve box (10).
4. Valve chest according to any of claims 1 to 3, characterized in that The valve box body (11) is provided with a plurality of liquid inlet channels (112) that are respectively connected to the main channel (111), and the plurality of liquid inlet channels (112) are arranged along the circumference of the valve box (10); And / or, the valve box body (11) is provided with a plurality of liquid outlet channels (113) respectively connected to the main channel (111), and the plurality of liquid outlet channels (113) are arranged along the circumference of the valve box (10).
5. The valve chest of claim 1, wherein, The main channel (111) includes a high-pressure chamber (111a), a low-pressure chamber (111b), and an alternating chamber (111c) arranged sequentially along the axial direction. The at least one liquid outlet channel (113) is connected to the high-pressure chamber (111a); The at least one liquid inlet channel (112) is connected to the low-pressure chamber (111b); The alternating cavity (111c) is arranged opposite to the plunger (20) at the hydraulic end.
6. The valve chest of claim 5, wherein, The cross-sectional area of the alternating cavity (111c) is smaller than that of the low-pressure cavity (111b) so that the main channel (111) forms a stepped structure (111d) on the inner wall at the junction of the low-pressure cavity (111b) and the alternating cavity (111c).
7. The valve chest of claim 1, wherein, The valve box body (11) includes a first end face (114), a second end face (115) and an outer peripheral surface (116). The first end face (114) and the second end face (115) are respectively disposed at both ends of the valve box body (11) along the axial direction. The outer peripheral surface (116) connects the first end face (114) and the second end face (115) and is disposed along the circumference of the valve box (10). The first end face (114) is provided with a plurality of first mounting holes (1141), which are distributed on the outer periphery of the main channel (111) and are used to install first fasteners. The first fasteners are used to fasten the packing box of the hydraulic end to the first end face (114).
8. The valve chest of claim 1, wherein, The valve box body (11) includes a first end face (114), a second end face (115) and an outer peripheral surface (116). The first end face (114) and the second end face (115) are respectively disposed at both ends of the valve box body (11) along the axial direction. The outer peripheral surface (116) connects the first end face (114) and the second end face (115) and is disposed along the circumference of the valve box (10). The outer peripheral surface (116) is provided with a plurality of second mounting holes (1161), which are used to install second fasteners respectively. The second fasteners are used to fasten the high pressure manifold of the hydraulic end to the outer peripheral surface (116).
9. The valve chest of claim 1, wherein, The valve box body (11) includes a first end face (114), a second end face (115) and an outer peripheral surface (116). The first end face (114) and the second end face (115) are respectively disposed at both ends of the valve box body (11) along the axial direction. The outer peripheral surface (116) connects the first end face (114) and the second end face (115) and is disposed along the circumference of the valve box (10). The second end face (115) is provided with a plurality of third mounting holes (1151), which are distributed on the outer periphery of the main channel (111) and are used to install third fasteners. The third fasteners are used to fasten the valve box body (11) to the connecting plate of the hydraulic end.
10. A fluid end characterized by, Includes the valve box (10) as described in any one of claims 1 to 9.
11. A pump characterized by Includes the hydraulic end as described in claim 10.