Collecting block, fluid end and pump

Abstract

The invention 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, mines, etc., and particularly relates to a manifold block, a hydraulic end, and a pump. Background Art

[0002] In some plunger pumps in the related art, a valve box is provided with a plurality of valve channels and a high-pressure flow channel. The plurality of valve channels are respectively communicated with the high-pressure flow channel, so that high-pressure medium can flow into the high-pressure flow channel from the plurality of valve channels and discharge the high-pressure medium through the high-pressure flow channel.

[0003] Due to the impact of the high-pressure medium on the high-pressure flow channel, after the plunger pump operates for a long time, it is easy to cause the high-pressure flow channel to be eroded, and even the high-pressure flow channel is penetrated, resulting in the entire valve box being scrapped, causing serious economic losses. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a manifold block, a hydraulic end, and a pump, which can solve problems such as the entire valve box being scrapped due to erosion of the high-pressure flow channel.

[0005] In order to solve the above technical problems, this application is implemented as follows: The embodiments of this application provide a manifold block, including: a manifold block body; The manifold block body is provided with a manifold channel and a plurality of shunt channels. The manifold channel extends along a first direction, the plurality of shunt channels are arranged along the first direction, and the first ends of the plurality of shunt channels are respectively communicated with the manifold channel, and the second ends of the plurality of shunt channels are respectively used for receiving fluid.

[0006] The embodiments of this application also provide a hydraulic end, including: a valve box and the above-mentioned manifold block; The valve box is provided with a plurality of main channels and a plurality of the liquid discharge channels. The plurality of main channels are arranged along the first direction, and each main channel extends along a second direction for accommodating the valve seat, the valve element assembly, and the plunger of the hydraulic end in the second direction. One end of each liquid discharge channel is communicated with the corresponding main channel; The manifold block is arranged in the valve box, and the other end of each liquid discharge channel is communicated with the corresponding shunt channel.

[0007] The embodiments of this application also provide a pump, including the above-mentioned hydraulic end.

[0008] In the embodiments of this application, the pressurized fracturing liquid can be discharged outside the valve box through the manifold block, and the manifold block is independent of the valve box. Thus, even if the manifold block is eroded or penetrated by the fracturing liquid, the manifold block can be repaired or replaced independently without repairing or replacing the entire valve box, thereby reducing the difficulty of repair or replacement and reducing the repair or replacement cost. Description of the Drawings

[0009] Figure 1 Schematic structural diagram of the hydraulic end disclosed in the embodiments of the present application; Figure 2 Schematic longitudinal sectional view of the hydraulic end in the first form disclosed in the embodiments of the present application; Figure 3 Schematic longitudinal sectional view of the hydraulic end in the second form disclosed in the embodiments of the present application; Figure 4 Schematic longitudinal sectional view of the hydraulic end in the third form disclosed in the embodiments of the present application; Figure 5 Schematic transverse sectional view of the hydraulic end disclosed in the embodiments of the present application; Figure 6 Schematic sectional view of the manifold block body in the first form disclosed in the embodiments of the present application; Figure 7 Schematic sectional view of the manifold block body and the drain head in the second form disclosed in the embodiments of the present application; Figure 8 Schematic sectional view of the manifold block body in the third form disclosed in the embodiments of the present application; Figure 9 Schematic sectional view of the connection between the manifold block body and the drain head in the embodiments of the present application; Figure 10 Schematic structural diagram of the drain head disclosed in the embodiments of the present application; Figure 11 Schematic structural diagram of the lock nut disclosed in the embodiments of the present application; Figure 12 Schematic sectional view of the connection between the manifold block and the valve box in the first form disclosed in the embodiments of the present application; Figure 13 Schematic sectional view of the connection between the manifold block and the valve box in the second form disclosed in the embodiments of the present application; Figure 14 Schematic sectional view of the connection between the manifold block and the valve box in the third form disclosed in the embodiments of the present application; Figure 15 Schematic sectional view of the connection between the manifold block and the valve box in the fourth form disclosed in the embodiments of the present application; Figure 16 Schematic sectional view of the connection between the manifold block and the valve box in the fifth form disclosed in the embodiments of the present application; Figure 17 Schematic sectional view of the connection between the manifold block and the valve box in the sixth form disclosed in the embodiments of the present application; Figure 18 Schematic sectional view of the connection between the manifold block and the valve box in the seventh form disclosed in the embodiments of the present application; Figure 19 This is a schematic cross-sectional view of the connection between the manifold block and the valve box in the eighth form disclosed in the embodiments of the present application.

[0010] Description of the reference numerals: 10 - Manifold block; 11 - Manifold block body; 11a - Manifold unit; 111 - Manifold channel; 111a - First channel unit; 112 - Dividing channel; 113 - Protrusion; 12 - First bushing; 13 - Drain end; 14 - Locking nut; 151 - First seal; 20 - Valve box; 20a - Valve box module; 21 - Drain channel; 22 - Main channel; 23 - Groove; 30 - Fastener; 40 - Second bushing; 51 - Second seal; 52 - Third seal; 53 - Fourth seal. Detailed implementation manners

[0011] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0012] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0013] Next, the embodiments of the present application will be described in detail in conjunction with the accompanying drawings, through specific embodiments and their application scenarios.

[0014] Referring to Figures 1 to 19 , embodiments of the present application disclose a manifold block 10, which can be applied to the hydraulic end. Of course, it can also be applied to other scenarios, and specific limitations are not made here. The disclosed manifold block 10 includes a manifold block body 11.

[0015] The manifold body 11 is provided with a manifold channel 111 and a plurality of shunt channels 112. Among them, the manifold channel 111 extends along a first direction, the plurality of shunt channels 112 are arranged along the first direction, and the first ends of the plurality of shunt channels 112 are respectively communicated with the manifold channel 111, and the second ends of the plurality of shunt channels 112 are respectively used for receiving fluid.

[0016] Based on the above settings, fluids (such as fracturing fluids, etc.) can be received respectively through the plurality of shunt channels 112, and the fluids received by the plurality of shunt channels 112 can be conveyed to the manifold channel 111, so as to collect the fluids through the manifold channel 111 and discharge the collected fluids. In this way, the manifold 10 can withstand the pressure and erosion of the fluid. Compared with the way in the related art that the inner wall of the channel of the valve box 20 bears the fluid pressure and erosion, the embodiment of the present application can change the object of fluid fracturing and erosion, and can be repaired or replaced separately when the manifold 10 is eroded or penetrated, so that it is not necessary to repair or replace the entire valve box 20, thereby reducing the difficulty of repair or replacement and reducing the repair or replacement cost.

[0017] Reference Figure 8 , in some embodiments, the manifold body 11 may include a plurality of manifold units 11a, the plurality of manifold units 11a are arranged along the first direction, each manifold unit 11a may be provided with a first channel unit 111a and a shunt channel 112 that are communicated with each other, and the first channel units 111a of the plurality of manifold units 11a are sequentially communicated to form the manifold channel 111.

[0018] Optionally, two adjacent manifold units 11a may be connected in a cooperative manner. Exemplarily, among two adjacent manifold units 11a, one end is provided with a protrusion, and the other is provided with a recess, and a reliable connection between the two adjacent manifold units 11a is achieved through the insertion fit of the protrusion and the recess. On the one hand, the stability of the connection can be ensured, and on the other hand, a certain sealing effect can also be achieved.

[0019] Optionally, two adjacent manifold units 11a may be hermetically connected, such as through sealing members such as sealing rings and gaskets to achieve hermetic connection.

[0020] Further, a sealing ring may be provided between the protrusion and the recess to further achieve a sealing effect.

[0021] Of course, two adjacent manifold units 11a may also be in abutting cooperation. In this case, each manifold unit 11a may be respectively used for fixed installation to the valve box 20, so as to ensure the installation stability of each manifold unit 11a and ensure that there is no relative movement between two adjacent manifold units 11a, so as to prevent leakage problems caused by misalignment between two adjacent manifold units 11a.

[0022] In other embodiments, the manifold block body 11 may also be an integral manifold unit 11a, which is provided with a manifold channel 111 penetrating through both ends of the manifold unit 11a in the first direction, and a plurality of shunt channels 112 arranged in the first direction.

[0023] Continuing to refer to Figure 8 , in some embodiments, the manifold block 10 may further include a plurality of first bushings 12. Each first bushing 12 is disposed at the connection of the first channel units 111a of two adjacent manifold units 11a, and the inner cavity of the first bushing 12 communicates with the two adjacent first channel units 111a.

[0024] Based on the above settings, the first bushing 12 can achieve a stable connection between two adjacent manifold units 11a to prevent misalignment and other phenomena between the two adjacent manifold units 11a. Moreover, the first bushing 12 can also shield and seal the docking portion of the two adjacent first channel units 111a, thereby effectively preventing fluid impact on the docking portion, and further effectively alleviating problems such as erosion and leakage at the docking portion of the two adjacent first channel units 111a.

[0025] Further, in two adjacent manifold units 11a, the inner wall of the first channel unit 111a of one of them may be provided with a first installation groove at the end close to the other one, and the two ends of the first bushing 12 are respectively embedded in the first installation grooves of the two adjacent manifold units 11a.

[0026] In addition, the cavity wall of the inner cavity of the first bushing 12 and the inner wall of the first channel unit 111a may have a smooth transition.

[0027] Based on the above settings, the end of the first bushing 12 can be accommodated by the first installation groove, thereby effectively preventing the first bushing 12 from occupying the space inside the first channel unit 111a, so that the cross-sectional area of the first channel unit 111a at the area where the first bushing 12 is provided will not decrease, ensuring that the fluid flows at the maximum flow rate in the first channel unit 111a and improving the smoothness of the fluid flow in the entire manifold channel 111. In addition, a stable and reliable connection between two adjacent manifold units 11a is achieved through the first bushing 12, which is beneficial to improving the sealing performance of the manifold block 10 and extending the service life of the manifold block 10.

[0028] In some embodiments, the first bushing 12 and the first channel unit 111a may be hermetically connected through a first seal 151. In this way, under the sealing action of the first seal 151, the problem of poor sealing between the first bushing 12 and the first channel unit 111a, which is likely to cause fluid leakage, can be effectively alleviated.

[0029] 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 a circumferentially extending annular groove, and at least a part of the first seal 151 is disposed in the annular groove, so as to achieve good sealing between the outer wall of the first bushing 12 and the bottom wall of the first mounting groove.

[0030] Reference Figure 7 and Figure 9 , in some embodiments, the manifold block 10 may further include a drain end 13, which is provided with a liquid outlet channel. The drain end 13 is disposed at at least one end of the manifold block body 11, and the liquid outlet channel is communicated with the manifold channel 111. Based on this, the manifold block 10 can be connected to other external pipelines through the drain end 13, so as to facilitate the discharge of the fluid.

[0031] Optionally, the drain end 13 and the manifold block body 11 may adopt a detachable connection manner, such as Figure 9 shown, in this way, it is convenient to disassemble and assemble the drain end 13 from the manifold block body 11. Of course, the drain end 13 and the manifold block body 11 may also be integrally provided, such as Figure 7 shown, to ensure the overall strength and sealing performance of the manifold block 10.

[0032] In some embodiments, the outer wall of the drain end 13 may be provided with an external thread, and the inner wall of the manifold channel 111 may be provided with an internal thread. The external thread and the internal thread are in mating connection, so that it is convenient to detachably connect the drain end 13 to the manifold block body 11. In addition, other connection methods may also be adopted between the drain end 13 and the manifold block body 11, such as snap connection, screw connection, etc., which are not specifically limited herein.

[0033] Optionally, the drain end 13 may be a drain flange or a high-pressure tee, etc. Of course, it may also be other structures, which are not specifically limited herein.

[0034] In some more specific embodiments, a drain flange is provided at one end of the manifold block body 11, and a high-pressure tee is provided at the other end.

[0035] To further improve the connection reliability between the drain end 13 and the manifold block body 11, the manifold block 10 may further include a lock nut 14, such as Figure 9 and Figure 11 shown. The lock nut 14 is in mating connection with the external thread, and the lock nut 14 abuts against the end face of the manifold block body 11. Based on this setting, after the drain end 13 is installed at the end of the manifold block body 11, the lock nut 14 is screwed, so that the end face of the lock nut 14 presses the end face of the manifold block body 11, thereby locking the drain end 13 to prevent the drain end 13 from loosening and moving randomly relative to the manifold block body 11.

[0036] In some embodiments, a seal may be provided at the connection between the liquid discharge end 13 and the manifold body 11 to improve the sealing performance. Optionally, a sealing groove may be provided on the outer wall of the liquid discharge end 13, and the seal may be disposed in the sealing groove.

[0037] In addition, the liquid discharge end 13 may also be provided with a disassembly hole for disassembling and assembling the discharge end.

[0038] In some embodiments, the manifold body 11 may also be provided with a setscrew hole (not shown in the figure). A lifting tool can be installed through the setscrew hole, and thus the manifold body 11 can be lifted by applying a pulling force to the lifting tool, for separating or assembling the manifold 10 from the valve box 20, thereby facilitating the repair or replacement of the manifold 10.

[0039] It should be noted here that when the manifold 10 needs to be lifted, the setscrew can be screwed into the setscrew hole, and a force can be applied to the setscrew through the lifting tool to lift the manifold 10 under the action of the setscrew.

[0040] Based on the above manifold 10, the present embodiment also discloses a hydraulic end, and the disclosed hydraulic end includes a valve box 20 and the above manifold 10.

[0041] Among them, the valve box 20 is provided with a plurality of main channels 22 and a plurality of liquid discharge channels 21. The plurality of main channels 22 are arranged in a first direction, and each main channel 22 extends in a second direction for accommodating the valve seat, valve component and plunger of the hydraulic end in the second direction. One end of each liquid discharge channel 21 communicates with the corresponding main channel 22; the manifold 10 is disposed in the valve box 20, and the other end of each liquid discharge channel 21 communicates with the corresponding flow splitting channel 112.

[0042] In addition, the hydraulic end may further include components such as a plunger, a suction valve component, a discharge valve component, and a valve seat. Among them, the suction valve component, the discharge valve component and the valve seat are respectively disposed in the main channel 22, and the plunger is movably disposed in the main channel 22. Thus, during the reciprocating movement of the plunger, the suction valve component and the discharge valve component can be periodically opened or closed respectively, so as to pressurize the fracturing liquid through the reciprocating movement of the plunger and discharge high-pressure liquid. In addition, since components such as the suction valve component, the discharge valve component and the valve seat are all disposed in the main channel 22, compared with the related art in which the suction valve component and the discharge valve component are arranged in a direction perpendicular to the valve seat, the inner wall of the main channel 22 in the embodiment of the present application will not form an intersection line, and thus is not easily eroded, which is beneficial to improving the service life of the valve box 20.

[0043] Based on the above settings, during the operation of the hydraulic end, the fracturing fluid is pressurized separately in multiple main channels 22 and then flows into the corresponding shunt channels 112 through multiple drain channels 21 respectively. Then, it flows into the manifold channel 111 through multiple shunt channels 112 for manifold collection, and finally is discharged through the manifold channel 111. Therefore, the impact and erosion of the fracturing fluid on the valve box 20 can be alleviated, and instead, the manifold block 10 bears the impact and erosion of the fracturing fluid. In this way, after a long-term operation of the hydraulic end, even if the manifold block 10 is damaged, only the manifold block 10 needs to be repaired or replaced, without the need to repair or replace the valve box 20, thereby reducing the difficulty and cost of repair or replacement.

[0044] Optionally, the valve box 20 can be an integral structure, that is, the valve box 20 includes a valve box module 20a, and the valve box module 20a can be provided with multiple main channels 22 and multiple drain channels 21. The multiple main channels 22 are respectively communicated with multiple shunt channels 112 through multiple drain channels 21.

[0045] Reference Figures 1 to 4 , in some other embodiments, the valve box 20 can include multiple valve box modules 20a arranged side by side along the first direction. Each valve box module 20a can be provided with at least one main channel 22 and at least one drain channel 21. In this way, at least one main channel 22 of each of the multiple valve box modules 20a can be respectively communicated with multiple shunt channels 112 through at least one drain channel 21.

[0046] In some embodiments, the hydraulic end can further include multiple fasteners 30, and the multiple fasteners 30 are fixedly connected to the manifold block 10 and the valve box 20.

[0047] Optionally, the manifold block 10 can be provided with multiple first mounting holes. Correspondingly, the valve box 20 can be provided with multiple second mounting holes. When installing the manifold block 10, the manifold block 10 is hoisted onto the valve box 20, and the first mounting holes are aligned with the second mounting holes. The fasteners 30 are inserted through the aligned first mounting holes and second mounting holes, thereby realizing the fastening installation of the manifold block 10 and ensuring the installation stability of the manifold block 10.

[0048] Exemplarily, 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 a screw.

[0049] In other embodiments, the hydraulic end can further include multiple fasteners 30 and multiple hoop fasteners. Among them, the multiple hoop fasteners are respectively sleeved on the outer side of the manifold block 10, and the multiple fasteners 30 respectively fix the multiple hoop fasteners to the valve box 20.

[0050] Optionally, multiple clamps can be arranged at intervals along the first direction to facilitate clamping different positions of the manifold 10, so that the forces on various parts of the manifold 10 are relatively balanced, which is beneficial to improving the installation stability of the manifold 10.

[0051] 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 sleeved on the outside of the manifold 10 along the first direction and arranged, and the third mounting hole is aligned with the second mounting hole. Then, the fastener 30 is passed through the aligned third mounting hole and the second mounting hole, so as to realize the fastening installation of each clamp, and the manifold 10 is clamped by multiple clamps to ensure the installation stability of the manifold 10.

[0052] Reference Figures 2 to 4 , in some embodiments, the hydraulic end may further include a plurality of second bushings 40. Each second bushing 40 is arranged at the docking portion of the corresponding liquid discharge channel 21 and the shunt channel 112, and the inner cavity of the second bushing 40 communicates with the liquid discharge channel 21 and the shunt channel 112.

[0053] Based on the above settings, the stable connection between the valve box 20 and the manifold 10 can be realized through a plurality of second bushings 40. Moreover, the second bushing 40 can also shield and seal the docking portion of the corresponding liquid discharge channel 21 and the shunt channel 112, so as to effectively prevent the fracturing liquid from impacting the docking portion, and further effectively alleviate problems such as erosion and leakage at the docking portion of the corresponding liquid discharge channel 21 and the shunt channel 112.

[0054] Furthermore, the inner walls of the corresponding liquid discharge channel 21 and the shunt channel 112 near the docking portion can be respectively provided with second mounting grooves, and both ends of the second bushing 40 are respectively embedded in the second mounting grooves of the corresponding liquid discharge channel 21 and the second mounting grooves of the shunt channel 112.

[0055] In addition, the inner wall of the inner cavity of the second bushing 40 and the inner wall of the corresponding liquid discharge channel 21 and the inner wall of the shunt channel 112 can be smoothly transitioned respectively.

[0056] Based on the above settings, the end of the first bushing 12 can be accommodated through the second mounting groove, so as to effectively prevent the second bushing 40 from occupying the space inside the liquid discharge channel 21 and the shunt channel 112 respectively, and ensure that the cross-sectional areas of the liquid discharge channel 21 and the shunt channel 112 in the area where the second bushing 40 is provided will not decrease, so as to ensure that the fluid flows at the maximum flow rate in the liquid discharge channel 21 and the shunt channel 112 and improve the smoothness of fluid flow. In addition, the stable and reliable connection between the corresponding liquid discharge channel 21 and the shunt channel 112 is realized through the second bushing 40, and it is beneficial to improve the sealing performance at the connection between the manifold 10 and the valve box 20.

[0057] In some embodiments, a second seal 51 may be used to seal the connection between the second bushing 40 and the drain channel 21, and between the second bushing 40 and the diversion channel 112, respectively. In this way, under the sealing action of the second seal 51, the problem of poor sealing between the second bushing 40 and the drain channel 21, and between the second bushing 40 and the diversion channel 112, which is likely to cause fluid leakage, can be effectively alleviated.

[0058] Optionally, as Figure 12 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 a circumferentially extending annular groove, and at least a part of the second seal 51 is disposed in the annular groove, so as to achieve good sealing between the outer wall of the second bushing 40 and the bottom wall of the second mounting groove.

[0059] Referring to Figures 13 to 15 , in some embodiments, one of the manifold body 11 at each diversion channel 112 and the valve box 20 at each drain channel 21 may be provided with a protrusion 113, and the other may be provided with a groove 23, and the protrusion 113 and the groove 23 are connected in a matching manner. Based on this setting, the connection area between the manifold body 11 and the valve box 20 can be increased, thereby improving the sealing performance at the connection; and further, the lateral limiting effect can be achieved through the cooperation between the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23, thereby improving the installation stability between the manifold 10 and the valve box 20.

[0060] Furthermore, the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23 may be sealed and connected by a third seal 52. In this way, under the sealing action 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 fracturing fluid.

[0061] 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 part of the third seal 52 is disposed in the annular groove, so as to achieve good sealing between the outer peripheral wall of the protrusion 113 and the inner peripheral wall of the groove 23.

[0062] In some 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 and connected by a fourth seal 53. In this way, under the sealing action 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 the leakage of fracturing fluid.

[0063] Based on the above hydraulic end, an embodiment of the present application also discloses a pump, and the disclosed pump includes the above hydraulic end.

[0064] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A manifold block, characterized in that, The manifold block (10) includes: a manifold block body (11); The manifold block body (11) is provided with a manifold channel (111) and a plurality of shunt channels (112). The manifold channel (111) extends along a first direction, the plurality of shunt channels (112) are arranged along the first direction, and the first ends of the plurality of shunt channels (112) are respectively communicated with the manifold channel (111), and the second ends of the plurality of shunt channels (112) are respectively used for receiving fluid.

2. The manifold block according to claim 1, characterized in that, The manifold block body (11) includes a plurality of manifold units (11a), and the plurality of manifold units (11a) are arranged along the first direction; Each of the manifold units (11a) is provided with a first channel unit (111a) and the shunt channel (112) that are communicated with each other, and the first channel units (111a) of the plurality of manifold units (11a) are sequentially communicated to form the manifold channel (111).

3. The manifold block according to claim 2, characterized in that, Adjacent two of the manifold units (11a) are hermetically connected.

4. The manifold block according to claim 3, wherein The manifold block (10) further includes a plurality of first bushings (12). Each of the first bushings (12) is disposed at the docking portion of the first channel units (111a) of adjacent two of the manifold units (11a), and the inner cavity of the first bushing (12) is communicated with adjacent two of the first channel units (111a).

5. The manifold block according to claim 4, characterized in that, Among adjacent two of the manifold units (11a), the inner wall of the first channel unit (111a) of one of them is provided with a first installation groove at the end close to the other one, and both ends of the first bushing (12) are respectively embedded in the first installation grooves of adjacent two of the manifold units (11a); And / or, the first bushing (12) and each of the first channel units (111a) are hermetically connected through a first seal (151).

6. The manifold according to any one of claims 1 to 5, characterized in that The manifold block (10) further includes a drain end head (13), and the drain end head (13) is provided with a liquid discharge channel; The drain end head (13) is disposed at at least one end of the manifold block body (11), and the liquid discharge channel is communicated with the manifold channel (111).

7. The manifold block according to claim 6, wherein The drain end head (13) is detachably connected or integrally provided with the manifold block body (11).

8. The manifold block according to claim 7, wherein The outer wall of the drain end head (13) is provided with an external thread, and the inner wall of the manifold channel (111) is provided with an internal thread, and the external thread is in threaded connection with the internal thread; The manifold block (10) further includes a lock nut (14), and the lock nut (14) is in threaded connection with the external thread, and the lock nut (14) presses the end face of the manifold block body (11).

9. A hydraulic end, characterized in that, Including: A valve box (20) and the manifold block (10) according to any one of claims 1 to 8; The valve box (20) is provided with a plurality of main channels (22) and a plurality of drain channels (21). The plurality of main channels (22) are arranged along the first direction, and each of the main channels (22) extends along a second direction and is used for accommodating the valve seat, valve element assembly and plunger of the hydraulic end in the second direction. One end of each of the drain channels (21) is communicated with the corresponding main channel (22); The manifold block (10) is provided in the valve box (20), and the other end of each drain channel (21) communicates with a corresponding flow splitting channel (112).

10. The hydraulic end according to claim 9, characterized in that, The hydraulic end further includes a plurality of fasteners (30), and the plurality of fasteners (30) tightly connect the manifold block (10) and the valve box (20); Alternatively, the hydraulic end further includes a plurality of fasteners (30) and a plurality of clamps. The plurality of clamps are respectively sleeved on the outer side of the manifold block (10), and the plurality of fasteners (30) respectively fasten the plurality of clamps to the valve box (20).

11. The hydraulic end according to claim 9, characterized in that, The hydraulic end further includes a plurality of second bushings (40). Each second bushing (40) is provided at the docking portion of the corresponding drain channel (21) and the flow splitting channel (112), and the inner cavity of the second bushing (40) communicates with the drain channel (21) and the flow splitting channel (112).

12. The hydraulic end according to claim 11, wherein The inner walls of the drain channel (21) and the flow splitting channel (112) respectively have second mounting grooves near the docking portion, and 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 flow splitting channel (112); And / or, between the second bushing (40) and the drain channel (21), and between the second bushing (40) and the flow splitting channel (112) are respectively sealed and connected by second seals (51).

13. The hydraulic end according to claim 9, characterized in that, One of the manifold block body (11) at each flow splitting channel (112) and the valve box (20) at each drain channel (21) is provided with a protrusion (113), and the other is provided with a groove (23); The protrusion (113) is connected in cooperation with the groove (23).

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

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

16. The hydraulic end according to claim 9, characterized in that, The valve box (20) is of 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, It includes the hydraulic end according to any one of claims 9 to 16.

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