CN113669252A

CN113669252A - Reciprocating pump hydraulic end for large-displacement plunger pump

Info

Publication number: CN113669252A
Application number: CN202110961828.3A
Authority: CN
Inventors: 孙政刚; 高佳欣; 郭东山
Original assignee: Jintuo Petroleum Machinery Manufactring Co ltd
Current assignee: Jintuo Petroleum Machinery Manufactring Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-11-19

Abstract

The invention relates to the technical field of high-pressure large-flow plunger pumps, in particular to a reciprocating pump hydraulic end for a large-displacement plunger pump, which comprises a pump base, a suction pipe assembly, a discharge pipe assembly, a plurality of adjustable support assemblies and a plurality of hydraulic end assemblies, wherein the suction pipe assembly is arranged at the top of the pump base through the plurality of adjustable support assemblies, the discharge pipe assembly is arranged above the suction pipe assembly, two ends of the plurality of hydraulic end assemblies are respectively communicated with the suction pipe assembly and the discharge pipe assembly, the suction pipe assembly comprises a suction manifold, manifold blind flanges, a flushing discharge valve, a first manifold through flange, two second manifold through flanges, a plurality of suction branch pipes and a plurality of suction upper flanges, and the plurality of suction branch pipes are arranged at the top of the suction manifold at equal intervals. The single hydraulic cylinder body is convenient to disassemble, the matched pipeline does not need to be integrally disassembled, and the maintenance is convenient.

Description

Reciprocating pump hydraulic end for large-displacement plunger pump

Technical Field

The invention relates to the technical field of high-pressure large-flow plunger pumps, in particular to a hydraulic end of a reciprocating pump for a large-displacement plunger pump.

Background

Large area water injection in oil field area with high water injection flow (100 m)³More than h), centrifugal pumps are mostly applied, but the multi-centrifugal pumps have the problems of low efficiency, large power consumption and energy waste. The research and development of the high-pressure large-flow plunger pump are mainly used for replacing a centrifugal pump, and the field application proves that the high-pressure large-flow plunger pump has remarkable energy saving and high durability of wearing parts, and is the best substitute of the centrifugal pump. The high-pressure large-flow plunger pump has large flow, high pressure, larger volume of key parts and complex structure. The hydraulic end of the high-pressure large-flow plunger pump is a core component for realizing liquid energy conversion, and the following problems often occur in the field application process:

1. the integral hydraulic cylinder body in the hydraulic end has larger volume, the processing equipment has higher exclusive degree, and the production cost is higher under the condition of no mass production.

2. The integral hydraulic cylinder body in the hydraulic end is found in the maintenance process, cracks appear in one working cavity or the gap is too large, when the sealing is not tight and the repair can not be carried out, the whole hydraulic cylinder body needs to be replaced, and the maintenance cost and the working strength are greatly increased.

3. The valve hole of the integral hydraulic cylinder body in the hydraulic end adopts a tapered hole design, the problems of poor sealing and pressure relief often occur, the normal work of the pump is seriously influenced, and great difficulty is brought to maintenance.

4. The valve seat and the valve cover of the valve assembly in the hydraulic end are connected through threads, the threads are usually buckled, and the valve group is large in size, inconvenient to replace and high in labor intensity.

5. The large flow of the large-flow plunger pump also shows that the suction inlet of the hydraulic end has large vibration and the pressure gauge has large fluctuation in the field operation process, so that the work of the pump is seriously influenced.

Disclosure of Invention

The invention aims to provide a hydraulic end of a reciprocating pump for a large-displacement plunger pump, so as to solve the problems in the background technology.

The technical scheme of the invention is as follows:

a reciprocating pump hydraulic end for a large-displacement plunger pump comprises a pump base, a suction pipe assembly, a discharge pipe assembly, a plurality of adjustable supporting assemblies and a plurality of hydraulic end assemblies, wherein the suction pipe assembly is installed at the top of the pump base through the plurality of adjustable supporting assemblies, the discharge pipe assembly is arranged above the suction pipe assembly, two ends of the plurality of hydraulic end assemblies are respectively communicated with the suction pipe assembly and the discharge pipe assembly, the suction pipe assembly comprises a suction manifold, a manifold blind flange, a flushing drain valve, a first manifold through flange, two second manifold through flanges, a plurality of suction branch pipes and a plurality of suction upper flanges, the plurality of suction branch pipes are equidistantly arranged at the top of the suction manifold, the plurality of suction upper flanges are installed at the tops of the plurality of suction branch pipes, and semi-waist-shaped through holes are distributed on the end faces of the suction upper flanges, the flange setting is led to in the left side of inhaling the tandem to first manifold, two the flange setting is led to in the second manifold is on the right side of inhaling the tandem to two second manifolds lead to and install first sealed pad between the flange, the blind flange of manifold installs on first manifold leads to the flange, and manifold blind flange and first manifold lead to and install the sealed pad of second between the flange, manifold blind flange downside is equipped with the screw hole, wash the flowing back valve and install on the screw hole, install the tetrafluoro pad between the blind flange of manifold and the washing flowing back valve.

Further, the discharge pipe subassembly includes discharge header, high pressure bleed valve, a plurality of discharge branch pipe and a plurality of exhaust branch pipe, a plurality of the equidistant setting of discharge branch pipe is in the bottom of discharge header, every the bottom of discharge branch pipe all is equipped with the discharge flange, the half waist shape hole of a plurality of terminal surface distribution of discharge flange, a plurality of the equidistant setting of exhaust branch pipe is at the top of discharge header, every the top of exhaust branch pipe all is equipped with the hexagonal end cap, the top at one of them exhaust branch pipe is installed to the high pressure bleed valve.

Furthermore, each hydraulic end component comprises a single liquid cylinder body, a front end upper plug, a front end lower plug, an outlet spacer bush and a suction damping component, the suction damping component is installed at the top of the suction upper flange, the single liquid cylinder body is installed between the top of the suction damping component and the bottom of the discharge flange, two valve holes are formed in the single liquid cylinder body, two outer conical surface sealing valve components are installed inside the two valve holes respectively, the front end upper plug and the front end lower plug are installed at the front end of the single liquid cylinder body respectively, the outlet spacer bush is installed at the top end of the inside of the single liquid cylinder body, and the outlet spacer bush is communicated with the discharge branch pipe.

Furthermore, each external conical surface sealing valve component comprises a valve seat, a valve cover, a lower guide valve core, a valve spring and a single-waveform spring pad, wherein the valve seat is arranged in the valve hole, the valve cover is detachably mounted on the valve seat, the lower guide valve core is arranged in the valve seat, the single-waveform spring pad is arranged at the top of the valve seat, and two ends of the valve spring are respectively connected with the single-waveform spring pad and the top end of the interior of the valve cover.

Furthermore, the suction damping component comprises a damping upper flange, a pressure-bearing rubber connecting pipe and a damping lower flange, the damping upper flange is connected with the bottom of the single-body type hydraulic cylinder body, the damping lower flange is connected with the top of the suction upper flange, and two ends of the pressure-bearing rubber connecting pipe are respectively connected with the damping upper flange and the damping lower flange.

Further, every adjustable brace subassembly all includes snap ring, lower snap ring, goes up backup pad, bottom suspension fagging, adjustment support and stud bolt, the top at the pump base is installed to the bottom suspension fagging, go up the vertical top that sets up at the bottom suspension fagging of backup pad, the adjustment support can be dismantled with last backup pad and be connected, the top at the adjustment support is installed to the snap ring down, go up the snap ring and pass through the stud bolt spiro union with lower snap ring, go up the snap ring and all be equipped with the rubber slab in the snap ring down.

The invention provides a reciprocating pump hydraulic end for a large-displacement plunger pump through improvement, and compared with the prior art, the reciprocating pump hydraulic end has the following improvements and advantages:

the hydraulic cylinder body is designed in a split manner, so that the hydraulic cylinder is convenient to process and saves the maintenance cost; the double sealing of the external conical surface sealing valve group ensures that the sealing is more reliable, the valve group has high durability and longer service life; the valve seat and the valve cover are self-locked and pressed in a clamping groove spring gasket mode, so that the valve cover is convenient to disassemble, the manufacturing cost is reduced, the efficiency is improved, and the strength is reduced; the inlet design inhales damper under each monomer hydraulic cylinder body, inhales the characteristic of inhaling through utilizing withstand voltage resistant oily rubber, has reduced the undulant of sunction inlet greatly, and equipment operation is more steady, utilizes the deformation characteristic of rubber, conveniently dismantles single hydraulic cylinder body, need not the supporting pipeline of whole dismantlement, convenient maintenance.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a structure of a suction pipe assembly of the present invention;

FIG. 3 is a schematic structural view of the discharge tube assembly of the present invention;

FIG. 4 is a cross-sectional view of the discharge tube assembly of the present invention;

FIG. 5 is a partial cross-sectional view of the present invention;

FIG. 6 is a cross-sectional view of the outer conical sealing valve member of the present invention;

FIG. 7 is a sectional view of a suction shock absorbing member of the present invention;

FIG. 8 is a schematic view of a portion of the adjustable support assembly of the present invention;

FIG. 9 is a schematic view of a second embodiment of the adjustable support assembly of the present invention.

Description of reference numerals:

a pump base 1, a suction pipe component 2, a suction manifold 21, a manifold blind flange 22, a flushing drain valve 23, a first manifold through flange 24, a second manifold through flange 25, a suction branch pipe 26, a suction upper flange 27, a discharge pipe component 3, a discharge manifold 31, a high-pressure air release valve 32, a discharge branch pipe 33, a discharge branch pipe 34, a discharge flange 35, a hexagonal plug 36, the adjustable support assembly 4, the upper snap ring 41, the lower snap ring 42, the upper support plate 43, the lower support plate 44, the adjusting bracket 45, the double-ended long bolt 46, the rubber plate 47, the hydraulic end assembly 5, the single-body cylinder body 51, the front end upper plug 52, the front end lower plug 53, the outlet spacer 54, the suction damping part 55, the damping upper flange 551, the pressure-bearing rubber connecting pipe 552, the damping lower flange 553, the valve hole 56, the outer conical surface sealing valve part 57, the valve seat 571, the valve housing 572, the lower guide valve core 573, the valve spring 574 and the single wave spring pad 575.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a reciprocating pump hydraulic end for a large-displacement plunger pump through improvement, as shown in figures 1-9, comprising a pump base 1, a suction pipe assembly 2, a discharge pipe assembly 3, a plurality of adjustable supporting assemblies 4 and a plurality of hydraulic end assemblies 5, wherein the suction pipe assembly 2 is mounted on the top of the pump base 1 through the plurality of adjustable supporting assemblies 4, the discharge pipe assembly 3 is arranged above the suction pipe assembly 2, two ends of the plurality of hydraulic end assemblies 5 are respectively communicated with the suction pipe assembly 2 and the discharge pipe assembly 3, the suction pipe assembly 2 comprises a suction manifold 21, a manifold blind flange 22, a flushing drain valve 23, a first manifold through flange 24, two second manifold through flanges 25, a plurality of suction branch pipes 26 and a plurality of suction upper flanges 27, the plurality of suction branch pipes 26 are arranged on the top of the suction manifold 21 at equal intervals, the suction upper flanges 27 are arranged at the tops of the suction branch pipes 26, the end faces of the suction upper flanges 27 are distributed with semi-waist-shaped through holes, so that bolts are convenient to detach and install, space is saved, the first manifold through flange 24 is arranged at the left side of the suction manifold 21, the two second manifold through flanges 25 are arranged at the right side of the suction manifold 21, a first sealing gasket is arranged between the two second manifold through flanges 25, the manifold blind flange 22 is arranged on the first manifold through flange 24, a second sealing gasket is arranged between the manifold blind flange 22 and the first manifold through flange 24, a threaded hole is arranged at the lower side of the manifold blind flange 22, the flushing drain valve 23 is arranged on the threaded hole, a tetrafluoro gasket is arranged between the manifold blind flange 22 and the flushing drain valve 23, so that a pipeline is convenient to flush, the upper end of the suction upper flange 27 is designed with a through hole, and the lower end is a counter bore, the diameter of the counter bore is larger than 261mm of the suction branch pipe, and plug-in type welding is adopted; the lower end of the suction branch pipe 26 is welded on the suction header 21, and the inner diameter and the outer diameter of the suction branch pipe 26 meet the flow and the pressure of a single cylinder; the suction manifold 21 is provided with branch pipe insertion holes according to a central office, and the inner diameter and the outer diameter of the suction manifold 21 meet the total flow and the suction pressure.

Specifically, the discharge pipe assembly 3 includes a discharge header 31, a high-pressure release valve 32, a plurality of discharge branch pipes 33 and a plurality of discharge branch pipes 34, the plurality of discharge branch pipes 33 are arranged at the bottom of the discharge header 31 at equal intervals, a discharge flange 35 is arranged at the bottom of each discharge branch pipe 33, a plurality of semi-waist-shaped holes are distributed on the end surface of the discharge flange 35, the plurality of discharge branch pipes 34 are arranged at the top of the discharge header 31 at equal intervals, a hexagonal plug 36 is arranged at the top of each discharge branch pipe 34, and the high-pressure release valve 32 is installed at the top of one of the discharge branch pipes 34; the outer diameter of the discharge flange 35 is the same as that of the outlet spacer sleeve 54, the design ensures strength and simultaneously facilitates bolt disassembly and assembly, space is saved, the size of a counter bore in the center of the upper end face of the discharge flange 35 is the same as that of the outer diameter of the discharge branch pipe 33, the hole opening is chamfered, the middle through hole is the same as the pipe diameter, the inner hole at the lower end is a sealing gasket mounting hole, and the depth dimension is less than about 1mm of the thickness of the sealing gasket; the inner diameter of the discharge branch pipe 33 ensures the flow velocity of a single-cylinder hydraulic end, the outer diameter ensures the highest discharge pressure, the upper end of the discharge branch pipe 33 is welded on the discharge header pipe 31, through holes are processed on the lower end surface of the discharge header pipe 31 according to the pump cylinder distance, the hole diameter is the same as the inner diameter of the discharge branch pipe 33, the inner diameter design of the discharge header pipe 31 ensures that the flow velocity stably meets the design standard when the maximum flow is realized, the outer diameter of the discharge pipe can bear the highest discharge pressure, the total length of the discharge header pipe 31 is about 500mm larger than the width of the whole cylinder body, the other side of the discharge pipe is welded and blocked by an end block, the upper end of the discharge header pipe 31 is welded with the discharge branch pipe 34 according to the position of the discharge branch pipe 33, the discharge branch pipe 34 is designed in a step mode, the small outer circle of the lower end is welded on the discharge header pipe 31, and the large outer diameter of the upper end ensures a certain thickness; blast pipe hole upper end is the screw thread design, guarantee the thread depth, the lower extreme communicates with each other for via hole and 31 internal diameters of discharge manifold, 4 blast pipe screw thread departments installation hexagonal end cap 36 in discharge manifold 31 upper end, it is sealed through the tetrafluoro pad between the two, be close to installation high pressure bleed valve 32 on the blast pipe of export one side, make things convenient for exhaust treatment, through welding exhaust branch pipe 34 on the discharge manifold 31, when making things convenient for carminative, also make things convenient for here ann to install and remove the valves instrument of tearing open, need not to dismantle the monomer liquid cylinder body.

Specifically, each of the hydraulic end assemblies 5 includes a single-body type fluid cylinder body 51, a front-end upper plug 52, a front-end lower plug 53, an outlet spacer 54 and a suction shock-absorbing member 55, the suction shock-absorbing member 55 is mounted on the top of the suction upper flange 27, the single-body type fluid cylinder body 51 is mounted between the top of the suction shock-absorbing member 55 and the bottom of the discharge flange 35, two valve holes 56 are formed in the single-body type fluid cylinder body 51, two sealing valve members 57 with external conical surfaces are respectively mounted inside the two valve holes 56, the front-end upper plug 52 and the front-end lower plug 53 are respectively mounted on the front end of the single-body type fluid cylinder body 51, the outlet spacer 54 is mounted on the inner top end of the single-body type fluid cylinder body 51, and the outlet spacer 54 is communicated with the discharge branch pipe 33; the single liquid cylinder body valve hole 56 is designed as a stepped through hole, the upper end of the single liquid cylinder body valve hole is a large hole, the lower part of the large hole is a conical valve seat hole, the lower part of the conical hole is a cylindrical hole, the lower side of the cylindrical hole is a through hole with the same size as the large hole at the upper end, the lower end of the through hole is also a conical valve seat hole and a cylindrical hole, the front end surface of the single liquid cylinder body is provided with two large holes, and the large hole at the upper end is crossed with the valve hole 56 and cannot penetrate; the middle end big hole is crossed with the valve hole 56 and drilled through to be coaxial with the machine body, and a plurality of threaded holes are uniformly distributed on the periphery of the upper big hole and the lower big hole. The upper and lower large holes at the front end are mainly convenient for installing and disassembling the sealing valve component with the outer conical surface, the upper and lower large holes at the front end are internally used for installing an upper front plug and a lower front plug, and the upper and lower large holes are fixed on the single hydraulic cylinder body by fastening bolts and elastic cushions; the front end face of the single liquid cylinder body is provided with 6 through holes which are used for being combined with the machine body handle, the first hole at the upper left end of the single liquid cylinder body is a positioning hole, the position size of the single liquid cylinder body and the machine body is ensured, and the other 5 holes are through holes which are combined with the machine body handle by using a hexagon head bolt and a gasket. A plurality of threaded holes are uniformly distributed in the circumferential direction of the large hole on the upper end surface of the monomer liquid cylinder body and are used for installing the discharge pipe assembly 3. A plurality of threaded holes are uniformly distributed in the circumferential direction of the through holes on the lower end surface of the single liquid cylinder body and are used for installing the suction damping part 55. The above 5 single liquid cylinder bodies are combined on the machine body at the same center distance to form an integral liquid cylinder body.

Specifically, each outer conical surface sealing valve component 57 comprises a valve seat 571, a valve bonnet 572, a lower guide valve core 573, a valve spring 574 and a single-wave spring washer 575, wherein the valve seat 571 is arranged in the valve hole 56, the outer circle of the valve seat 571 is in a five-step design, the end face of the large outer circle at the upper end is in a rib plate type design, 3 ribs are uniformly distributed, a certain width and thickness are ensured, and the width is in transition with the round angle of the small outer circle at the upper end; the size of the outer circumference and the circumference below the thickness of the rib plate is consistent with the small outer circumference at the upper end; the largest outer circle of the valve seat 571 is arranged below the small outer circle at the upper end to ensure a certain thickness dimension, the lower end of the large outer circle is designed to be a conical surface to ensure an enough contact surface, the lower end of the conical surface is a small cylindrical surface, and the cylindrical surface is designed to be a sealing ring to be provided with an O-shaped rubber ring. The outer conical surface and the cylindrical surface of the valve seat 571 are sealed doubly, so that the sealing reliability is ensured, and meanwhile, the conical surface also plays a role in fixing the valve group; the 90-degree sealing surface of the end surface of the large inner hole at the upper end of the valve seat 571 is designed, the width of the sealing surface ensures the static pressure strength and the closing impact of liquid, the large inner hole at the lower end is designed with a guide cylindrical surface to ensure the depth and high precision, and the thread design of the inner hole at the lower end facilitates the disassembly of the valve seat 571; the valve cover 572 is detachably mounted on the valve seat 571, the valve cover 572 is generally designed to be convenient to detach, the outer circle is divided into two parts, the upper part is a small-angle conical surface, the lower part is a large-outer-circle cylindrical surface, and the valve cover 572 can be mounted on the valve seat 571 through a large hole in the front end face of the single liquid cylinder body and is convenient to mount; 6 rectangular overflowing holes are uniformly distributed on the end face of the outer circle of the valve bonnet 572 to ensure enough overflowing area; a large hole is designed in the center of the upper end face of the conical surface of the

valve cover

572, and 4 small holes are designed in the circumferential direction, so that the flow surface is enlarged, and the valve cover 572 is convenient to disassemble; the inner hole of the valve cover 572 is mainly divided into three parts, the diameter of the inner hole at the upper end is about 2mm larger than the excircle of the spring, and the thickness of the inner hole at the upper end is 7mm larger than the thickness of the conical surface on the excircle, so that the length of the inner hole at the upper end is ensured; the inner hole of the lower end is larger than the inner hole of the upper end surface and larger than the diameter of the big excircle of the valve core; the design of three groups of annular grooves at the lower end of the large inner hole is that the outer diameter of each groove is about 1mm larger than the excircle of the gluten plate at the upper end of the valve seat 571, the length of the groove in the circumferential direction is just intersected with the end surface of 6 ribs on the excircle of the valve bonnet 572, the position size of each groove is 5mm with the lower end surface of the large excircle, and the width of each groove is 10 mm; the annular groove intersects with 6 rectangular overflowing grooves on the excircle end face to form 3 through grooves at uniformly designed positions, the width dimension of the groove is communicated with the large excircle end face of the valve seat 571 by inertia, three ribs of the valve seat 571 are arranged in the vertical rib annular grooves of the valve cover 572 when the valve seat 571 and the valve cover 572 are installed, when the valve seat 571 and the valve cover 572 are disassembled, the valve cover 572 can be easily disassembled by rotating 3 ribs of the valve seat 571 in a way of rotating angles in the valve cover 5723 through grooves, the lower guide valve core 573 is arranged in the valve seat 571, the single-wave spring pad 575 is arranged at the top of the valve seat 571, two ends of the valve spring 574 are respectively connected with the single-wave spring pad 575 and the top end of the valve cover 572, the upper end of the lower guide valve core 573 is a large excircle, the lower end of the lower guide valve core 573 is designed as a 90-degree sealing surface, the enough sealing width is effectively sealed with the sealing surface of the valve seat 571, the lower end of the sealing surface is designed as a hollow groove, and the lower end of the hollow groove is a guide excircle, the small clearance fit with the inner hole of the valve seat 571 ensures accurate guiding and reliable sealing surface; the guide cylindrical surface at the lower end of the valve core is uniformly cut into 4 guide ribs, an inner hole is designed to be a taper hole, the depth of the taper hole is slightly larger than the length of the guide ribs, and the guide ribs are intersected with the taper hole to ensure the flow area of liquid; the annular boss in the upper end of the valve core is designed, the inner side of the outer side of the valve core of the outer side of the inner side of the valve core of the inner side of the valve core. A single-wave spring washer 575 is arranged between the valve bonnet 572 and the valve seat 571, the inner hole of the single-wave spring washer 575 is larger than the small excircle of the upper end of the valve seat 571 by 1.5mm, the outer diameter of the single-wave spring washer 575 is larger than the excircle of the rib plate of the valve seat 571 by 6mm, the thickness is 1mm, and the design of a wave crest design opening is 4, so that the sufficient elasticity is ensured, and the installation is convenient. The valve spring 574, the valve core and the valve seat 571 are firmly installed together by utilizing the elastic deformation of the single-wave spring pad 575, and the valve cover 572 is easily disassembled and assembled without other special tools.

Specifically, the suction shock absorbing member 55 includes a shock absorbing upper flange 551, a pressure-bearing rubber adapter 552 and a shock absorbing lower flange 553, the shock absorbing upper flange 551 is connected to the bottom of the monoblock hydraulic cylinder 51, the shock absorbing lower flange 553 is connected to the top of the suction upper flange 27, and both ends of the pressure-bearing rubber adapter 552 are connected to the shock absorbing upper flange 551 and the shock absorbing lower flange 553, respectively; the pressure-bearing rubber connecting pipe 552 is designed in a long arc shape between the sealing surfaces of bosses on two sides, the service life is ensured by adopting a pressure-bearing rubber material, the outer diameter size of the bosses on two sides of the pressure-bearing rubber connecting pipe 552 is larger than the size of an inner hole of the upper shock-absorbing flange 551, the rubber bosses are used for sealing, and the upper flange and the lower flange can be conveniently installed by using the deformation of rubber; meanwhile, the deformation of the rubber is utilized to greatly reduce the vibration of suction, and the stability of flow is ensured.

Specifically, each adjustable support assembly 4 comprises an upper clamping ring 41, a lower clamping ring 42, an upper support plate 43, a lower support plate 44, an adjusting bracket 45 and a long stud bolt 46, the lower support plate 44 is mounted at the top of the pump base 1, the upper support plate 43 is vertically arranged at the top of the lower support plate 44, the adjusting bracket 45 is detachably connected with the upper support plate 43, the lower clamping ring 42 is mounted at the top of the adjusting bracket, the upper clamping ring 41 is in threaded connection with the lower clamping ring 42 through the long stud bolt 46, and rubber plates 47 are arranged in the upper clamping ring 41 and the lower clamping ring 42; go up the width direction size of snap ring 41 and lower snap ring 42 and guarantee that the chucking inhales and have reasonable space behind the header 21 between the two, rubber slab 47 is 5mm wear-resisting rubber slab 47, guarantees that the chucking is simultaneously to snap ring and suction tube external diameter still a protection, height-adjustable between adjustment support 45 and the last backup pad 43.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a big displacement reciprocating pump hydraulic end for plunger pump which characterized in that: the suction pipe assembly comprises a pump base (1), a suction pipe assembly (2), a discharge pipe assembly (3), a plurality of adjustable supporting assemblies (4) and a plurality of hydraulic end assemblies (5), wherein the suction pipe assembly (2) is installed at the top of the pump base (1) through the plurality of adjustable supporting assemblies (4), the discharge pipe assembly (3) is arranged above the suction pipe assembly (2), the two ends of the hydraulic end assemblies (5) are respectively communicated with the suction pipe assembly (2) and the discharge pipe assembly (3), the suction pipe assembly (2) comprises a suction manifold (21), a manifold blind flange (22), a flushing drain valve (23), a first manifold through flange (24), two second manifold through flanges (25), a plurality of suction branch pipes (26) and a plurality of suction upper flanges (27), and the suction branch pipes (26) are equidistantly arranged at the top of the suction manifold (21), the suction upper flanges (27) are arranged at the tops of the suction branch pipes (26), the end faces of the suction upper flanges (27) are distributed with semi-kidney-shaped through holes, the first manifold through flange (24) is arranged on the left side of the suction manifold (21), the two second manifold through flanges (25) are arranged on the right side of the suction manifold (21), a first sealing gasket is arranged between the two second manifold through flanges (25), the manifold blind flange (22) is arranged on the first manifold through flange (24), a second sealing gasket is arranged between the manifold blind flange (22) and the first manifold through flange (24), a threaded hole is formed in the lower side of the manifold blind flange (22), the flushing drain valve (23) is arranged on the threaded hole, and a tetrafluoro gasket is arranged between the manifold blind flange (22) and the flushing drain valve (23).

2. A reciprocating pump fluid end for a high displacement plunger pump according to claim 1, wherein: the exhaust pipe component (3) comprises an exhaust manifold (31), a high-pressure deflation valve (32), a plurality of exhaust branch pipes (33) and a plurality of exhaust branch pipes (34), wherein the exhaust branch pipes (33) are arranged at the bottom of the exhaust manifold (31) at equal intervals, each exhaust branch pipe (33) is provided with an exhaust flange (35) at the bottom, a plurality of semi-waist-shaped holes are distributed on the end face of the exhaust flange (35), a plurality of exhaust branch pipes (34) are arranged at the top of the exhaust manifold (31) at equal intervals, each exhaust branch pipe (34) is provided with a hexagonal plug (36) at the top, and the high-pressure deflation valve (32) is arranged at the top of one exhaust branch pipe (34).

3. A reciprocating pump fluid end for a high displacement plunger pump according to claim 2, wherein: each hydraulic end assembly (5) comprises a single hydraulic cylinder body (51), a front end upper plug (52), a front end lower plug (53), an outlet spacer bush (54) and a suction damping component (55), the suction shock absorbing member (55) is installed on the top of the suction upper flange (27), the single cylinder body (51) is installed between the top of the suction shock absorbing member (55) and the bottom of the discharge flange (35), two valve holes (56) are arranged in the single-body type liquid cylinder body (51), two external conical surface sealing valve components (57) are respectively arranged in the two valve holes (56), the front end upper plug (52) and the front end lower plug (53) are respectively arranged at the front end of the single liquid cylinder body (51), the outlet spacer 54 is installed at the inner top end of the single body type cylinder body 51, and the outlet spacer 54 is communicated with the discharge branch pipe 33.

4. A reciprocating pump fluid end for a high displacement plunger pump according to claim 3, wherein: each outer conical surface sealing valve component (57) comprises a valve seat (571), a valve cover (572), a lower guide valve core (573), a valve spring (574) and a single-wave spring pad (575), wherein the valve seat (571) is arranged in the valve hole (56), the valve cover (572) is detachably mounted on the valve seat (571), the lower guide valve core (573) is arranged inside the valve seat (571), the single-wave spring pad (575) is arranged on the top of the valve seat (571), and two ends of the valve spring (574) are respectively connected with the single-wave spring pad (575) and the inner top end of the valve cover (572).

5. A reciprocating pump fluid end for a high displacement plunger pump according to claim 3, wherein: the suction damping part (55) comprises a damping upper flange (551), a pressure-bearing rubber connecting pipe (552) and a damping lower flange (553), the damping upper flange (551) is connected with the bottom of the single-body type hydraulic cylinder body (51), the damping lower flange (553) is connected with the top of the suction upper flange (27), and two ends of the pressure-bearing rubber connecting pipe (552) are respectively connected with the damping upper flange (551) and the damping lower flange (553).

6. A reciprocating pump fluid end for a high displacement plunger pump according to claim 1, wherein: every adjustable brace component (4) all include snap ring (41), lower snap ring (42), go up backup pad (43), bottom suspension fagging (44), adjustment support (45) and double-end long bolt (46), the top at pump base (1) is installed in bottom suspension fagging (44), go up the vertical top that sets up in bottom suspension fagging (44) of backup pad (43), adjustment support (45) can be dismantled with last backup pad (43) and be connected, the top at the adjustment support is installed in lower snap ring (42), go up snap ring (41) and lower snap ring (42) and pass through double-end long bolt (46) spiro union, all be equipped with rubber slab (47) in going up snap ring (41) and lower snap ring (42).