Collecting block, fluid end and pump

Abstract

The utility model discloses a flow collecting block, a fluid end and a pump, and relates to the fields of oil gas, mines and the like. The current collecting block comprises a current collecting block body; the flow collecting block comprises a flow collecting block body, the flow collecting block body is provided with a flow collecting channel and a plurality of flow distributing channels, the flow collecting channel extends in the first direction, the flow distributing channels are arranged in the first direction, the first ends of the flow distributing channels communicate with the flow collecting channel, and the second ends of the flow distributing channels are used for receiving fluid. The problem that the whole valve box is scrapped due to the fact that the high-pressure flow channel is eroded can be solved.

Description

Technical Field

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

[0002] Some plunger pumps in related technologies have valve boxes equipped with multiple valve passages and high-pressure flow passages. The multiple valve passages are connected to the high-pressure flow passages respectively, so that the high-pressure medium can flow into the high-pressure flow passages from the multiple valve passages and be discharged through the high-pressure flow passages.

[0003] Because the high-pressure medium has an impact on the high-pressure flow channel, after long-term operation of the plunger pump, the high-pressure flow channel is easily eroded, or even broken through, resulting in the scrapping of the entire valve box and causing serious economic losses. Utility Model Content

[0004] The purpose of this application is to provide a manifold, hydraulic end and pump that can solve the problem of the entire valve box being scrapped due to the erosion of the high pressure flow channel.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] This application provides a collector block, including: a collector block body;

[0007] The main body of the flow collector is provided with a flow collecting channel and multiple flow splitting channels. The flow collecting channel extends along a first direction, and the multiple flow splitting channels are arranged along the first direction. The first end of each of the multiple flow splitting channels is connected to the flow collecting channel, and the second end of each of the multiple flow splitting channels is used to receive fluid.

[0008] This application embodiment also provides a hydraulic end, including: a valve box and the above-mentioned manifold;

[0009] The valve box is provided with multiple main channels and multiple drainage channels. The multiple main channels are arranged along the first direction, and each main channel extends along the second direction to accommodate the valve seat, valve assembly and plunger of the hydraulic end in the second direction. One end of each drainage channel is connected to the corresponding main channel.

[0010] The manifold is located in the valve box, and the other end of each drainage channel is connected to the corresponding diversion channel.

[0011] This application also provides a pump, including the hydraulic end described above.

[0012] In this embodiment, the pressurized fracturing fluid can be discharged outside the valve box through the manifold, and the manifold is independent of the valve box. Thus, even if the manifold is eroded or punctured by the fracturing fluid, the manifold can be repaired or replaced separately without repairing or replacing the entire valve box, thereby reducing the difficulty and cost of repair or replacement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the hydraulic end structure disclosed in the embodiments of this application;

[0014] Figure 2 This is a longitudinal cross-sectional schematic diagram of the first type of hydraulic end disclosed in the embodiments of this application;

[0015] Figure 3 This is a longitudinal cross-sectional schematic diagram of the second form of hydraulic end disclosed in the embodiments of this application;

[0016] Figure 4 This is a longitudinal cross-sectional view of the third type of hydraulic end disclosed in the embodiments of this application;

[0017] Figure 5 This is a schematic cross-sectional view of the hydraulic end disclosed in an embodiment of this application;

[0018] Figure 6 This is a cross-sectional schematic diagram of the first type of manifold body disclosed in the embodiments of this application;

[0019] Figure 7 This is a cross-sectional schematic diagram of the second form of the manifold body and the drain end disclosed in the embodiments of this application;

[0020] Figure 8 This is a cross-sectional schematic diagram of the third type of manifold body disclosed in the embodiments of this application;

[0021] Figure 9 This is a cross-sectional schematic diagram of the connection between the manifold body and the drain end disclosed in the embodiment of this application;

[0022] Figure 10 This is a schematic diagram of the structure of the drain end disclosed in the embodiments of this application;

[0023] Figure 11 This is a schematic diagram of the structure of the locking nut disclosed in the embodiments of this application;

[0024] Figure 12 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the first form disclosed in the embodiments of this application;

[0025] Figure 13 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the second form disclosed in the embodiments of this application;

[0026] Figure 14 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the third form disclosed in the embodiments of this application;

[0027] Figure 15 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the fourth form disclosed in the embodiments of this application;

[0028] Figure 16 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the fifth form disclosed in the embodiments of this application;

[0029] Figure 17 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the sixth form disclosed in the embodiments of this application;

[0030] Figure 18 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the seventh form disclosed in the embodiments of this application;

[0031] Figure 19 This is a cross-sectional schematic diagram of the connection between the manifold and the valve box in the eighth form disclosed in the embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10-Catcher Block;

[0034] 11-Current collector body; 11a-Current collector unit; 111-Current collector channel; 111a-First channel unit; 112-Current splitting channel; 113-Protrusion;

[0035] 12-First bushing;

[0036] 13-Drainage end;

[0037] 14- Lock nut;

[0038] 151 - First seal;

[0039] 20-Valve box; 20a-Valve box module; 21-Drainage channel; 22-Main channel; 23-Groove;

[0040] 30-Fasteners;

[0041] 40 - Second bushing;

[0042] 51 - Second seal; 52 - Third seal; 53 - Fourth seal. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0046] refer to Figures 1 to 19 This application discloses a manifold 10, which can be applied to hydraulic systems, and of course, can also be applied to other scenarios, which are not specifically limited here. The disclosed manifold 10 includes a manifold body 11.

[0047] The main body 11 of the flow collector is provided with a flow collecting channel 111 and a plurality of flow splitting channels 112. The flow collecting channel 111 extends along a first direction, the plurality of flow splitting channels 112 are arranged along the first direction, and the first end of each of the plurality of flow splitting channels 112 is connected to the flow collecting channel 111, and the second end of each of the plurality of flow splitting channels 112 is used to receive fluid.

[0048] Based on the above configuration, fluids (such as fracturing fluids) can be received through multiple diversion channels 112, and the received fluids can be transported to the collection channel 111 through the multiple diversion channels 112. The collected fluids are then collected and discharged through the collection channel 111. In this way, the collection block 10 can withstand the pressure and erosion of the fluid. Compared with the method in related technologies where the inner wall of the valve box 20 is used to withstand the fluid pressure and erosion, the embodiment of this application can change the object of fluid fracturing and erosion, and can repair or replace the collection block 10 separately when it is eroded or punctured, thus eliminating the need to repair or replace the entire valve box 20. This reduces the difficulty and cost of repair or replacement.

[0049] refer to Figure 8In some embodiments, the current collection block body 11 may include a plurality of current collection units 11a, the plurality of current collection units 11a are arranged along a first direction, each current collection unit 11a may be provided with a first channel unit 111a and a split channel 112 connected in sequence, and the first channel units 111a of the plurality of current collection units 11a are connected in sequence to form a current collection channel 111.

[0050] Optionally, two adjacent current collectors 11a can be connected to each other. For example, one of the two adjacent current collectors 11a has a protrusion at its end and the other has a recess. The reliable connection between the two adjacent current collectors 11a is achieved by the insertion and engagement of the protrusion and the recess. This can ensure the stability of the connection and also provide a certain degree of sealing.

[0051] Optionally, two adjacent current collection units 11a can be sealed together, such as by means of sealing rings, sealing gaskets or other components.

[0052] Furthermore, a sealing ring can be provided between the protrusion and the recess to further enhance the sealing effect.

[0053] Of course, two adjacent manifold units 11a can also be connected to each other. In this case, each manifold unit 11a can be fixedly installed to the valve box 20 to ensure the installation stability of each manifold unit 11a and to ensure that two adjacent manifold units 11a will not move relative to each other, so as to prevent misalignment between two adjacent manifold units 11a and leakage problems.

[0054] In other embodiments, the main body 11 of the current collector can also be an integral current collector unit 11a, which has a current collector channel 111 extending through both ends of the current collector unit 11a in a first direction, and a plurality of current distribution channels 112 arranged in the first direction.

[0055] Continue to refer to Figure 8 In some embodiments, the current collection block 10 may further include a plurality of first bushings 12, each first bushing 12 being disposed at the connection of the first channel unit 111a of two adjacent current collection units 11a, and the inner cavity of the first bushing 12 being connected to the two adjacent first channel units 111a.

[0056] Based on the above configuration, the first bushing 12 can achieve a stable connection between two adjacent flow collection units 11a to prevent misalignment between the two adjacent flow collection units 11a. Furthermore, the first bushing 12 can also shield and seal the joint between two adjacent first channel units 111a, thereby effectively preventing fluid from impacting the joint and thus effectively alleviating problems such as erosion and leakage at the joint between two adjacent first channel units 111a.

[0057] Furthermore, in two adjacent current collection units 11a, the inner wall of the first channel unit 111a of one of them near the other may be provided with a first mounting groove, and the two ends of the first bushing 12 are respectively embedded in the first mounting grooves of the two adjacent current collection units 11a.

[0058] In addition, the inner wall of the first bushing 12 can smoothly transition with the inner wall of the first channel unit 111a.

[0059] Based on the above configuration, the end of the first bushing 12 can be accommodated by the first mounting groove, thereby effectively preventing the first bushing 12 from occupying space within the first channel unit 111a. This ensures that the cross-sectional area of ​​the first channel unit 111a in the area where the first bushing 12 is installed will not decrease, guaranteeing that the fluid flows at maximum flow rate in the first channel unit 111a and improving the smoothness of fluid flow throughout the entire collection channel 111. Furthermore, the first bushing 12 achieves a stable and reliable connection between two adjacent collection units 11a, which is beneficial for improving the sealing performance of the collection block 10 and extending its service life.

[0060] In some embodiments, the first bushing 12 and the first channel unit 111a can be sealed together by the first seal 151. In this way, the sealing effect of the first seal 151 can effectively alleviate the problem of poor sealing between the first bushing 12 and the first channel unit 111a, which can easily lead to fluid leakage.

[0061] Optionally, at least one of the bottom wall of the first mounting groove and the outer wall of the first bushing 12 is provided with an annular groove extending in the circumferential direction, and at least a portion of the first seal 151 is provided in the annular groove, thereby achieving a good seal between the outer wall of the first bushing 12 and the bottom wall of the first mounting groove.

[0062] refer to Figure 7 and Figure 9 In some embodiments, the manifold 10 may further include a drain end 13, which has a liquid outlet channel. The drain end 13 is located at at least one end of the manifold body 11, and the liquid outlet channel is connected to the manifold channel 111. Based on this, the drain end 13 can be used to connect the manifold 10 to other external pipelines to facilitate the discharge of fluid.

[0063] Optionally, the drain end 13 and the manifold body 11 can be detachably connected, such as... Figure 9 As shown, this facilitates the disassembly and assembly of the drain end 13 and the manifold body 11. Of course, the drain end 13 and the manifold body 11 can also be integrated, such as... Figure 7 As shown, this is to ensure the overall strength and sealing of the manifold 10.

[0064] In some embodiments, the outer wall of the drain end 13 may be provided with external threads, and the inner wall of the collecting channel 111 may be provided with internal threads. The external threads and internal threads are connected in a mating manner, which facilitates the detachable connection between the drain end 13 and the collecting block body 11. In addition, other connection methods may be used between the drain end 13 and the collecting block body 11, such as snap-fit, screw connection, etc., which are not specifically limited here.

[0065] Optionally, the drain end 13 can be a drain flange or a high-pressure tee, etc. Of course, it can also be other structures, which are not specifically limited here.

[0066] In some more specific embodiments, one end of the manifold body 11 is provided with a drain flange, and the other end is provided with a high-pressure tee.

[0067] To further improve the connection reliability between the drain end 13 and the manifold body 11, the manifold 10 may also include a locking nut 14, such as... Figure 9 and Figure 11 As shown, the locking nut 14 is connected to the external thread and abuts against the end face of the manifold body 11. Based on this configuration, after the drain end 13 is installed to the end of the manifold body 11, the locking nut 14 is screwed on so that the end face of the locking nut 14 presses against the end face of the manifold body 11, thereby locking the drain end 13 to prevent it from loosening and moving freely relative to the manifold body 11.

[0068] In some embodiments, a seal may be provided at the connection between the drain end 13 and the manifold body 11 to improve sealing. Optionally, the outer wall of the drain end 13 may be provided with a sealing groove, and the seal may be disposed in the sealing groove.

[0069] In addition, the drain end 13 may also be provided with a disassembly hole for disassembling and assembling the drain end.

[0070] In some embodiments, the manifold body 11 may also be provided with a set screw hole (not shown in the figure), through which a lifting tool can be installed, so that the manifold body 11 can be lifted by applying traction force to the lifting tool, for separating or assembling the manifold 10 from the valve box 20, thereby facilitating the maintenance or replacement of the manifold 10.

[0071] It should be noted that when it is necessary to hoist the collector block 10, the set screw can be screwed into the set screw hole, and the set screw can be applied with force by the hoisting tool to hoist the collector block 10 under the action of the set screw.

[0072] Based on the aforementioned manifold 10, this embodiment also discloses a hydraulic end, which includes a valve box 20 and the aforementioned manifold 10.

[0073] The valve box 20 is provided with multiple main channels 22 and multiple drain channels 21. The multiple main channels 22 are arranged along a first direction, and each main channel 22 extends along a second direction to accommodate the valve seat, valve assembly and plunger of the hydraulic end in the second direction. One end of each drain channel 21 is connected to the corresponding main channel 22. The manifold 10 is provided in the valve box 20, and the other end of each drain channel 21 is connected to the corresponding diversion channel 112.

[0074] In addition, the hydraulic end may also include components such as a plunger, an intake valve assembly, an exhaust valve assembly, and a valve seat. The intake valve assembly, exhaust valve assembly, and valve seat are respectively disposed within the main channel 22. The plunger is movably disposed within the main channel 22. Thus, during the reciprocating movement of the plunger, the intake valve assembly and the exhaust valve assembly can periodically open or close, facilitating the pressurization of the fracturing fluid through the reciprocating movement of the plunger to discharge high-pressure fluid. Furthermore, since the intake valve assembly, exhaust valve assembly, and valve seat are all disposed within the main channel 22, compared to the related art where the intake valve assembly and exhaust valve assembly are positioned perpendicular to the valve seat, the inner wall of the main channel 22 in this embodiment does not form an intersecting line, thus reducing erosion and improving the service life of the valve box 20.

[0075] Based on the above configuration, during hydraulic end operation, the fracturing fluid is pressurized in multiple main channels 22 and then flows into corresponding branch channels 112 through multiple drainage channels 21. It then flows into the collection channel 111 through the branch channels 112 for collection and is finally discharged through the collection channel 111. Therefore, the impact and erosion of the valve box 20 by the fracturing fluid can be mitigated. Instead, the impact and erosion are absorbed by the collection block 10. Thus, even if the collection block 10 is damaged after prolonged hydraulic end operation, only the collection block 10 needs repair or replacement; the valve box 20 does not need to be repaired or replaced, thereby reducing the difficulty and cost of repair or replacement.

[0076] Optionally, the valve box 20 can be an integral structure, that is, the valve box 20 includes a valve box module 20a, which can be provided with multiple main channels 22 and multiple drainage channels 21. The multiple main channels 22 are connected to multiple diversion channels 112 through the multiple drainage channels 21 respectively.

[0077] refer to Figures 1 to 4 In other embodiments, the valve box 20 may include a plurality of valve box modules 20a arranged side by side along a first direction. Each valve box module 20a may be provided with at least one main channel 22 and at least one drain channel 21. Thus, the at least one main channel 22 of each of the plurality of valve box modules 20a may be connected to a plurality of diversion channels 112 through at least one drain channel 21.

[0078] In some embodiments, the hydraulic end may also include a plurality of fasteners 30, which fasten the manifold 10 and the valve box 20.

[0079] Optionally, the manifold 10 may be provided with multiple first mounting holes, and correspondingly, the valve box 20 may be provided with multiple second mounting holes. When installing the manifold 10, the manifold 10 is hoisted onto the valve box 20, and the first mounting holes are aligned with the second mounting holes. Fasteners 30 are then inserted into the aligned first and second mounting holes to achieve a tight installation of the manifold 10 and ensure the installation stability of the manifold 10.

[0080] For example, the first mounting hole can be a smooth hole, the second mounting hole can be a threaded hole, and the fastener 30 can be a bolt or screw.

[0081] In other embodiments, the hydraulic end may also include a plurality of fasteners 30 and a plurality of clamps, wherein the plurality of clamps are respectively sleeved on the outside of the manifold 10, and the plurality of fasteners 30 respectively fix the plurality of clamps to the valve box 20.

[0082] Optionally, multiple clamps can be arranged at intervals along the first direction to tighten different positions of the collector block 10, thereby making the force on the collector block 10 more balanced and improving the installation stability of the collector block 10.

[0083] In addition, each clamp can be provided with a third mounting hole, and the valve box 20 can be provided with a second mounting hole. When installing the manifold 10, the manifold 10 is hoisted onto the valve box 20, and multiple clamps are respectively arranged on the outside of the manifold 10 along the first direction, with the third mounting hole aligned with the second mounting hole. Fasteners 30 are inserted into the aligned third and second mounting holes, thereby achieving the tight installation of each clamp and ensuring the installation stability of the manifold 10 by clamping the manifold 10 with multiple clamps.

[0084] refer to Figures 2 to 4 In some embodiments, the hydraulic end may also include a plurality of second bushings 40, each second bushing 40 being disposed at the junction of the corresponding drain channel 21 and the diversion channel 112, and the inner cavity of the second bushing 40 being connected to the drain channel 21 and the diversion channel 112.

[0085] Based on the above configuration, a stable connection between the valve box 20 and the manifold 10 can be achieved through multiple second bushings 40. Furthermore, the second bushings 40 can also shield and seal the joints between the corresponding drain channels 21 and the diversion channels 112, thereby effectively preventing the fracturing liquid from impacting the joints and thus effectively alleviating problems such as erosion and leakage at the joints between the corresponding drain channels 21 and the diversion channels 112.

[0086] Furthermore, the corresponding drain channel 21 and diversion channel 112 may each be provided with a second mounting groove on the inner wall near the docking point, and the two ends of the second bushing 40 are respectively embedded in the second mounting groove of the corresponding drain channel 21 and the second mounting groove of the diversion channel 112.

[0087] In addition, the inner wall of the second bushing 40 and the inner wall of the corresponding drainage channel 21, i.e. the inner wall of the diversion channel 112, can be smoothly transitioned.

[0088] Based on the above configuration, the end of the first bushing 12 can be accommodated by the second mounting groove, thereby effectively preventing the second bushing 40 from occupying the space within the drain channel 21 and the diversion channel 112. This ensures that the cross-sectional area of ​​the drain channel 21 and the diversion channel 112 at the location of the second bushing 40 will not decrease, guaranteeing that the fluid flows at its maximum flow rate in the drain channel 21 and the diversion channel 112, and improving the smoothness of fluid flow. In addition, the second bushing 40 achieves a stable and reliable connection between the corresponding drain channel 21 and the diversion channel 112, and also helps to improve the sealing performance at the connection between the manifold 10 and the valve box 20.

[0089] In some embodiments, the second bushing 40 and the drain channel 21, as well as the second bushing 40 and the diversion channel 112, can be sealed and connected by the second seal 51 respectively. In this way, the sealing effect of the second seal 51 can effectively alleviate the problem of poor sealing between the second bushing 40 and the drain channel 21, as well as between the second bushing 40 and the diversion channel 112, which easily leads to fluid leakage.

[0090] Optionally, such as Figure 12 As shown, at least one of the bottom wall of the second mounting groove and the outer wall of the second bushing 40 is provided with an annular groove extending in the circumferential direction, and at least a portion of the second seal 51 is provided in the annular groove, thereby achieving a good seal between the outer wall of the second bushing 40 and the bottom wall of the second mounting groove.

[0091] refer to Figures 13 to 15 In some embodiments, the manifold body 11 may have a protrusion 113 at each diversion channel 112 and a groove 23 at each drainage channel 21 of the valve box 20, with the protrusion 113 and groove 23 engaging and connecting. This arrangement increases the connection area between the manifold body 11 and the valve box 20, thereby improving the sealing performance at the connection. Furthermore, the engagement between the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23 provides a lateral limiting effect, thereby improving the installation stability between the manifold 10 and the valve box 20.

[0092] Furthermore, the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23 can be sealed together by the third seal 52. In this way, under the sealing effect of the third seal 52, the sealing performance at the connection between the manifold 10 and the valve box 20 can be further improved, effectively preventing the leakage of the fracturing liquid.

[0093] Optionally, at least one of the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23 may be provided with an annular groove, and at least a portion of the third seal 52 is provided in the annular groove, thereby achieving a good seal between the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23.

[0094] In other embodiments, the surface of the manifold body 11 facing the valve box 20 and the surface of the valve box 20 facing the manifold body 11 are sealed together by a fourth seal 53. In this way, under the sealing effect of the fourth seal 53, the sealing performance at the connection between the manifold 10 and the valve box 20 can be further improved, effectively preventing leakage of fracturing liquid.

[0095] Based on the aforementioned hydraulic end, this application also discloses a pump, which includes the aforementioned hydraulic end.

[0096] 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 current collector, characterized in that, The collector block (10) includes: a collector block body (11); The main body (11) of the flow collector is provided with a flow collecting channel (111) and a plurality of flow splitting channels (112). The flow collecting channel (111) extends along a first direction, and the plurality of flow splitting channels (112) are arranged along the first direction. The first end of each of the plurality of flow splitting channels (112) is connected to the flow collecting channel (111), and the second end of each of the plurality of flow splitting channels (112) is used to receive fluid.

2. The current collector according to claim 1, characterized in that, The main body of the current collector (11) includes a plurality of current collector units (11a), and the plurality of current collector units (11a) are arranged along the first direction; Each of the current collection units (11a) is provided with a first channel unit (111a) and a current distribution channel (112) that are connected together. The first channel units (111a) of the multiple current collection units (11a) are connected in sequence to form the current collection channel (111).

3. The current collector according to claim 2, characterized in that, The two adjacent current collection units (11a) are sealed together.

4. The current collector according to claim 3, characterized in that, The collector block (10) also includes a plurality of first bushings (12), each first bushing (12) being disposed at the docking point of the first channel unit (111a) of two adjacent collector units (11a), and the inner cavity of the first bushing (12) is connected to the two adjacent first channel units (111a).

5. The current collector according to claim 4, characterized in that, In two adjacent current collection units (11a), the first channel unit (111a) of one of them has a first mounting groove on the inner wall at one end near the other, and the two ends of the first bushing (12) are respectively embedded in the first mounting grooves of the two adjacent current collection units (11a). And / or, the first bushing (12) is sealed to each of the first channel units (111a) by a first seal (151).

6. The current collector according to any one of claims 1 to 5, characterized in that, The collector block (10) also includes a drain end (13), which is provided with a liquid outlet channel; The drain end (13) is located at at least one end of the collector block body (11), and the drain channel is connected to the collector channel (111).

7. The current collector according to claim 6, characterized in that, The drain end (13) can be detachably connected to or integrally formed with the main body (11) of the collection block.

8. The current collector according to claim 7, characterized in that, The outer wall of the drain end (13) is provided with an external thread, and the inner wall of the collection channel (111) is provided with an internal thread. The external thread and the internal thread are connected in a mating manner. The collector block (10) also includes a locking nut (14), which is connected to the external thread and presses against the end face of the collector block body (11).

9. A hydraulic end, characterized in that, include: Valve box (20) and manifold (10) as described in any one of claims 1 to 8; The valve box (20) is provided with multiple main channels (22) and multiple drain channels (21). The multiple main channels (22) are arranged along the first direction, and each main channel (22) extends along the second direction to accommodate the valve seat, valve assembly and plunger of the hydraulic end in the second direction. One end of each drain channel (21) is connected to the corresponding main channel (22). The manifold (10) is located in the valve box (20), and the other end of each drain channel (21) is connected to the corresponding diversion channel (112).

10. The hydraulic end according to claim 9, characterized in that, The hydraulic end also includes a plurality of fasteners (30), which fasten the manifold (10) and the valve box (20) together. Alternatively, the hydraulic end may also include a plurality of fasteners (30) and a plurality of clamps, the plurality of clamps being respectively fitted on the outside of the manifold (10), and the plurality of fasteners (30) respectively securing the plurality of clamps to the valve box (20).

11. The hydraulic end according to claim 9, characterized in that, The hydraulic end also includes a plurality of second bushings (40), each of the second bushings (40) being disposed at the junction of the corresponding drain channel (21) and the diversion channel (112), and the inner cavity of the second bushing (40) is connected to the drain channel (21) and the diversion channel (112).

12. The hydraulic end according to claim 11, characterized in that, The drain channel (21) and the diversion channel (112) are each provided with a second mounting groove on the inner wall near the docking point. The two ends of the second bushing (40) are respectively embedded in the second mounting groove of the drain channel (21) and the second mounting groove of the diversion channel (112). And / or, the second bushing (40) is sealed to the drain channel (21) and the second bushing (40) is sealed to the diversion channel (112) by the second seal (51).

13. The hydraulic end according to claim 9, characterized in that, The main body of the manifold (11) has a protrusion (113) at one of the diversion channels (112) and the valve box (20) has a groove (23) at the other of the drainage channels (21). The protrusion (113) is connected to the groove (23).

14. The hydraulic end according to claim 13, characterized in that, The outer peripheral wall of the protrusion (113) and the inner peripheral wall of the groove (23) are sealed together by a third seal (52).

15. The hydraulic end according to claim 9, characterized in that, The surface of the manifold body (11) facing the valve box (20) and the surface of the valve box (20) facing the manifold body (11) are sealed together by a fourth seal (53).

16. The hydraulic end according to claim 9, characterized in that, The valve box (20) is an integral structure, or the valve box (20) includes a plurality of valve box modules (20a) arranged side by side along the first direction.

17. A pump, characterized in that, Includes the hydraulic end as described in any one of claims 9 to 16.

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