CN109915357B - Y-shaped spring positioner for hydraulic end of fracturing pump - Google Patents
Y-shaped spring positioner for hydraulic end of fracturing pump Download PDFInfo
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- CN109915357B CN109915357B CN201910299709.9A CN201910299709A CN109915357B CN 109915357 B CN109915357 B CN 109915357B CN 201910299709 A CN201910299709 A CN 201910299709A CN 109915357 B CN109915357 B CN 109915357B
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- 230000000670 limiting effect Effects 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a Y-shaped spring positioner for a hydraulic end of a fracturing pump, belongs to the technical field of fracturing pump devices, and is used for solving the problems of fatigue crack damage and the like caused by stress concentration due to the fact that an existing spring positioner is matched with a valve box body by adopting a groove structure. The invention comprises a valve box body, wherein a suction cavity is formed in the valve box body, a suction valve body is arranged at the lower end of the suction cavity, an adsorption valve seat is sleeved outside the suction valve body, a suction spring is arranged at the upper end of the suction valve body, and a positioner body is arranged at the upper end of the suction spring; the lower extreme of locator body is provided with the cover and establishes the circular boss in inhaling the spring, and the upper end undercut of locator body forms the constant head tank, and the left and right sides outer wall of locator body all includes upper segment and hypomere, and the external diameter of upper segment is less than the external diameter of hypomere, through conical surface interconnect between upper segment and the hypomere, inhales chamber upper end inner wall symmetry and is provided with limit structure, limit structure's lower extreme seted up the inclined plane with conical surface mutual match.
Description
Technical Field
The invention relates to the technical field of fracturing pump devices, in particular to a Y-shaped spring positioner for a hydraulic end of a fracturing pump.
Background
The hydraulic end of the fracturing pump (also called a valve box of the fracturing pump) is a key component of the fracturing pump, the power end of the fracturing pump drives a plunger to reciprocate and linearly move, and cyclic work of sucking and discharging fracturing fluid is realized in the hydraulic end through alternate opening and closing movement of a suction valve and a discharge valve, so that the fracturing pump can finally inject the pressure fluid into the well in a high-pressure fluid energy mode for fracturing operation. And whether the hydraulic end can reliably and stably work has a direct relation with whether the suction valve works well or not, if the suction valve works unstably and has poor durability, the abnormal suction and discharge of the fracturing fluid by the hydraulic end can be directly caused, the larger fluctuation of flow and pressure can be caused, and even the vibration of the fracturing pump is aggravated because of the serious pump (insufficient suction fluid) which is used for running away, so that the safety of equipment and the construction of fracturing operation are influenced.
The spring of the suction valve needs to be pre-tensioned and positioned through a special spring positioner so as to ensure that the spring can provide proper spring restoring force at a specified working position, and the suction valve can normally work in an open-close cycle; whether the suction valve positioner accurately and reliably positions the suction valve spring can influence the normal operation of the suction valve, the installation mode and the structure size of the suction valve positioner are necessarily related to the structural design of the working inner cavity of the hydraulic end, the structural strength, the hydrodynamic effect and the maintenance convenience of the hydraulic end are influenced, and therefore the suction valve spring positioner is also an important accessory of the hydraulic end.
The conventional suction valve positioner in the market at present has three structures of a cylinder type, a T type and an E type; however, there are certain drawbacks to the three structures:
(1) cylindrical shape: the strength and rigidity of the structure of the cylindrical suction valve positioner are large enough to provide enough working stability, but the structural characteristics also determine that the aperture D of the horizontal mounting through hole on the valve box body is large (more than 20mm larger than the diameter phi of the plunger is needed), and the structural strength of the valve box body can be weakened to a certain extent due to the large value of D; and because the volume of the cylindrical suction valve spring positioner is also larger, more fluid damping can be generated on the overflow section according to hydrodynamic analysis, a flocculation flow which is unfavorable for fluid movement is formed, the surface erosion of the fluid to the inner cavity of the valve box body is increased, the opening and closing stability of the valve body can be influenced by the flocculation flow, and the durability of the valve body and the valve seat is weakened.
(2) T-and E-type: the T-shaped and E-shaped suction valve spring positioners are assembled in a groove machined on a valve box body after rotating by 90 degrees (the same is true for the T-shaped suction valve spring positioners), and an anti-rotation limiting eccentric groove is arranged to prevent the positioners from rotating out of position and separating out of the groove in operation, but because of structural characteristics, the positions of the grooves matched with the positioners on the valve box body have larger stress concentration positions (such as intersecting edges of straight contact planes, cutting marks at the root parts of the groove, lower end head parts of the anti-rotation eccentric groove and the like), and the positions of the stress concentration positions are difficult to be better eliminated by polishing and shot blasting, so that fatigue crack damage generated at the groove positions is induced in actual operation, and although the main fatigue crack sources of the valve box are at the intersecting line positions of a horizontal hole and a vertical hole, the E-shaped and T-shaped positioners are necessary for the technology of matching the stress concentration positions of the grooves, and adverse effects on the service life of the valve box are also necessary, and the valve box is required to have higher strength and better performance due to severe fracturing operation conditions such as high pressure and large discharge capacity.
For this reason, a new type of spring positioner for the hydraulic end of the fracturing pump is needed to solve the above problems.
Disclosure of Invention
The invention aims at: the Y-shaped spring positioner for the hydraulic end of the fracturing pump is provided for solving the problems of fatigue crack damage and the like caused by stress concentration due to the fact that the conventional spring positioner is matched with a valve box body through a groove structure.
The invention adopts the following technical scheme for realizing the purposes:
the Y-shaped spring positioner for the hydraulic end of the fracturing pump comprises a valve box body, wherein a suction cavity is formed in the valve box body, a suction valve body is arranged at the lower end of the suction cavity, an adsorption valve seat is sleeved outside the suction valve body, a suction spring is arranged at the upper end of the suction valve body, and a positioner body is arranged at the upper end of the suction spring; the lower extreme of locator body is provided with the cover and establishes the circular boss in inhaling the spring, and the upper end undercut of locator body forms the constant head tank of cambered surface, and the left and right sides outer wall of locator body all includes the upper segment and is located the hypomere of upper segment below, and the external diameter of upper segment is less than the external diameter of hypomere, through conical surface interconnect between upper segment and the hypomere, inhales chamber upper end inner wall symmetry and is provided with limit structure, limit structure's lower extreme seted up the inclined plane with conical surface mutual match.
Further preferred, the taper angle θ of the tapered surface is 15 to 75 °.
According to the invention, as a further preferable mode, the upper section of one side of the positioner body is provided with the anti-rotation pin along the horizontal direction, the inner wall of the upper end of the suction cavity is provided with the anti-rotation limiting eccentric groove which is mutually matched with the anti-rotation pin, and the lower end of the anti-rotation limiting eccentric groove penetrates through the limiting structure.
As a further preferable mode, the width of the anti-rotation limiting eccentric groove is larger than 2-5mm of the anti-rotation pin.
In the invention, as a further preferable mode, the locator body is provided with a plurality of overflow holes in a penetrating manner in the vertical direction.
As a further preferable mode, the inner wall of the suction cavity is provided with a horizontal mounting hole positioned above the limiting structure, an auxiliary positioning cylinder is arranged in the horizontal mounting hole, and the side wall of the auxiliary positioning cylinder is positioned in the positioning groove.
The beneficial effects of the invention are as follows:
1. the matched positioning structure of the positioner body and the valve box body does not adopt a groove structure any more, but is matched with the limit structure of the upper end inner wall of the suction cavity through one cone, and adopts one section of auxiliary positioning cylinder and a horizontal mounting hole to assist in positioning, so that the existence of the groove is eliminated, stress concentration positions are reduced, and the stress concentration defects that some groove structures are difficult to remove can be taken out in a processing mode such as polishing and shot blasting, so that the problem that the strength of the valve box body is weakened due to the fact that the T-shaped and E-shaped positioners are matched with the groove can be solved well, the hydraulic end structure strength can be improved while good positioning reliability and working stability are ensured, the hydraulic end is long in service life and convenient to mount and dismount, and equipment maintenance is facilitated.
2. The taper angle of the conical surface is 15-75 degrees, the interval is selected and optimized according to the matched valve element of the valve box and the structural characteristics of the valve box body, the stability of the positioner body after installation is ensured, the stress is uniformly distributed on the conical surface, and the fatigue damage caused by stress concentration is less.
3. An anti-rotation pin is arranged at the upper section of one side of the positioner body, and after the anti-rotation pin is installed, the anti-rotation pin enters into an anti-rotation limiting eccentric groove, so that the positioner is effectively prevented from rotating in the horizontal direction; the installation is, the locator body and the anti-rotating pin receive decurrent exogenic action, make locator body and anti-rotating pin all be located between two limit structure, then rotate 90 simultaneously holding decurrent exogenic of locator body, make the left and right sides of locator body rotate limit structure's below respectively, and at this moment, anti-rotating pin is located the below of anti-rotating eccentric spacing groove, then remove locator body decurrent exogenic force, locator body and anti-rotating pin upwards move under the exogenic action of suction spring, the anti-rotating pin enters into the anti-rotating spacing eccentric inslot from anti-rotating spacing eccentric groove lower extreme opening, realize the fixation to locator body horizontal plane, effectively prevent that the locator body from rotating in the horizontal direction, avoid the conical surface to break away from limit structure, anti-rotating spacing eccentric groove's width is greater than anti-rotating pin's width 2-5mm, make things convenient for anti-rotating pin's installation, simultaneously after anti-rotating pin installs, can realize that anti-rotating pin can properly rotate at anti-rotating spacing eccentric groove.
4. A plurality of overflow holes are formed in the locator body along the vertical direction, the direction of the overflow holes is consistent with the flowing direction of the liquid, and the obstruction effect of the locator body on the liquid is reduced.
5. Through the positioning slot of the sunken formation in auxiliary positioning cylinder and locator body upper end, the auxiliary positioning cylinder is used for installing the locator body when using, and after the installation, auxiliary positioning cylinder withdraws, and auxiliary positioning cylinder's lateral wall is located the effect that plays spacing location to the locator body in the positioning slot, through setting up an auxiliary positioning mode, guarantees the horizontal accuracy of locator body when the installation, guarantees that the anti-rotating pin can accurately enter into in the spacing eccentric groove of anti-rotating.
Drawings
FIG. 1 is a schematic structural view of a positioner body;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic view of the structure of the positioner body within the suction chamber;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is a partial schematic view of the valve housing body;
FIG. 6 is a schematic view of the direction of flow of a liquid;
FIG. 7 is a schematic view of another positioner;
FIG. 8 is a schematic top view of the structure of FIG. 7;
reference numerals: the valve box comprises a 1-positioner body, a 2-overflow hole, a 3-circular boss, a 4-positioning groove, a 5-upper section, a 6-conical surface, a 610-inclined surface, a 7-lower section, an 8-suction valve seat, a 9-suction valve body, a 10-suction spring, an 11-rotation preventing pin, a 1110-rotation preventing limit eccentric groove, a 12-auxiliary positioning cylinder, a 13-suction cavity and a 14-valve box body.
Detailed Description
For a better understanding of the present invention, reference is made to the following description of the invention, taken in conjunction with the accompanying drawings, 1-8, and the examples below. Example 1
The Y-shaped spring positioner for the hydraulic end of the fracturing pump comprises a valve box body 14, wherein a suction cavity 13 is formed in the valve box body 14, a suction valve body 9 is arranged at the lower end of the suction cavity 13, an adsorption valve seat is sleeved outside the suction valve body 9, a suction spring 10 is arranged at the upper end of the suction valve body 9, and a positioner body 1 is arranged at the upper end of the suction spring 10; the lower end of the locator body 1 is provided with a circular boss 3 sleeved in the suction spring 10, the upper end of the locator body 1 is downwards sunken to form a locating groove 4 of an arc surface, the outer walls of the left side and the right side of the locator body 1 respectively comprise an upper section 5 and a lower section 7 positioned below the upper section 5, the outer diameter of the upper section 5 is smaller than that of the lower section 7, the upper section 5 and the lower end are connected with each other through a conical surface 6, the inner wall of the upper end of the suction cavity 13 is symmetrically provided with a limiting structure, and the lower end of the limiting structure is provided with an inclined surface 610 matched with the conical surface 6; the upper end of the locator body 1 is sunken downwards to form a locating groove 4, the lower end of the locator is provided with a round boss 3, and the front view of the locator body 1 is Y-shaped.
After the technical scheme is adopted, the matched positioning structure of the positioner body 1 and the valve box body 14 does not adopt a groove structure any more, but adopts a cone body to be matched with the limiting structure of the upper end inner wall of the suction cavity 13, and adopts a section of auxiliary positioning cylinder 12 and a horizontal mounting hole to assist in positioning, so that the existence of the groove is eliminated, the stress concentration part is reduced, and the stress concentration defect that some groove structures are difficult to remove can be taken out in a good way through polishing, shot blasting and other processing modes, thereby the problem that the strength of the valve box body 14 is weakened due to the fact that the T-shaped and E-shaped positioners are matched with the groove is solved, the hydraulic end structure strength can be increased while the good positioning reliability and the working stability are ensured, the service life of the hydraulic end is prolonged, the installation and the disassembly are convenient, and the equipment maintenance is facilitated.
Example 2
This example is further optimized on the basis of example 1 as follows: the taper angle θ of the taper surface 6 is 15 to 75 °, for example: 15 °, 30 °, 40 °, 45 °, 60 °, 70 °, 75 °, etc.
After the technical scheme is adopted, the taper angle of the conical surface 6 is 15-75 degrees, the interval is selected and optimized according to the matched valve element of the valve box and the structural characteristic of the valve box body 14, the stability of the positioner body 1 after installation is ensured, the stress is uniformly distributed on the conical surface 6, and the fatigue damage caused by stress concentration is less.
The material properties requirements for the positioner body have the following:
example 3
This example is further optimized on the basis of example 1 as follows: the upper segment 5 of locator body 1 one side is provided with anti-rotation pin 11 along the horizontal direction, and the upper end inner wall of inhaling chamber 13 has seted up with anti-rotation pin 11 looks adaptation prevent changeing spacing eccentric groove 1110 each other, and the lower extreme of preventing changeing spacing eccentric groove 1110 runs through limit structure. The anti-rotation limit eccentric slot 1110 has a width greater than 112-5mm of the anti-rotation pin.
After the technical scheme is adopted, the anti-rotation pin 11 is arranged at the upper section 5 at one side of the positioner body 1, and after the anti-rotation pin 11 is installed, the anti-rotation pin 11 enters the anti-rotation limiting eccentric groove 1110, so that the positioner is effectively prevented from rotating in the horizontal direction; the installation is, locator body 1 and anti-rotating pin 11 receive decurrent exogenic action, make locator body 1 and anti-rotating pin 11 all be located between two limit structure, then rotate 90 simultaneously at decurrent exogenic of holding locator body 1, make the left and right sides of locator body 1 rotate limit structure's below respectively, and at this moment, anti-rotating pin 11 is located the below of anti-rotating eccentric spacing groove, then remove locator body 1 decurrent exogenic, locator body 1 and anti-rotating pin 11 upwards move under the exogenic action of suction spring 10, anti-rotating pin 11 enters into in anti-rotating limiting eccentric groove 1110 from anti-rotating limiting eccentric groove 1110 lower extreme opening, realize fixing to locator body 1 horizontal plane, effectively prevent that locator body 1 from rotating in the horizontal direction, avoid conical surface 6 to break away from limit structure, anti-rotating limiting groove 1110's width is greater than anti-rotating pin 11's width 2-5mm, make things convenient for anti-rotating pin 11's installation back, simultaneously, anti-rotating pin 11 can realize at anti-rotating limiting groove 1110 can properly rotate after anti-rotating pin 11 installs.
Example 4
This example is further optimized on the basis of example 1 as follows: the locator body 1 is provided with a plurality of overflow holes 2 in a penetrating manner in the vertical direction.
After the technical scheme is adopted, the plurality of overflow holes 2 are formed in the locator body 1 along the vertical direction, the direction of the overflow holes 2 is consistent with the flowing direction of liquid, and the obstruction effect of the locator body 1 on the liquid is reduced.
Example 5
This example is further optimized on the basis of example 1 as follows: the inner wall of the suction cavity 13 is provided with a horizontal mounting hole positioned above the limiting structure, an auxiliary positioning cylinder 12 is arranged in the horizontal mounting hole, and the side wall of the auxiliary positioning cylinder 12 is positioned in the positioning groove 4.
After the technical scheme is adopted, the positioning groove 4 formed by recessing the upper end of the positioner body 1 through the auxiliary positioning cylinder 12 is matched with each other, the auxiliary positioning cylinder 12 is used when the positioner body 1 is installed, after the installation is finished, the auxiliary positioning cylinder 12 is evacuated, the side wall of the auxiliary positioning cylinder 12 is positioned in the positioning groove 4 to play a role in limiting and positioning the positioner body 1, the horizontal accuracy of the positioner body 1 during installation is ensured by additionally arranging an auxiliary positioning mode, and the anti-rotation pin 11 can accurately enter the anti-rotation limiting eccentric groove 1110.
Example 6
The retainer body 1 of the present embodiment is different from the retainer body 1 of the embodiment 1 in that the retainer body 1 of the present embodiment moves the tapered surface 6 for positioning up to the upper ends of the left and right ends of the retainer body 1 as shown in fig. 7 and 8, and the circular boss 3 and the positioning groove are kept identical to those of the embodiment 1.
After the technical scheme is adopted, the structure of the positioner body 1 is more compact, and the design requirement of the inner cavity of the existing valve box can be better covered.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The Y-shaped spring positioner for the hydraulic end of the fracturing pump comprises a valve box body (14), wherein a suction cavity (13) is formed in the valve box body (14), a suction valve body (9) is arranged at the lower end of the suction cavity (13), a suction valve seat (8) is sleeved outside the suction valve body (9), a suction spring (10) is arranged at the upper end of the suction valve body (9), and a positioner body (1) is arranged at the upper end of the suction spring (10); it is characterized in that the method comprises the steps of,
the lower extreme of locator body (1) is provided with circular boss (3) of cover in inhaling spring (10), the upper end undercut of locator body (1) forms constant head tank (4) of cambered surface, the left and right sides outer wall of locator body (1) all includes upper segment (5) and is located lower segment (7) of upper segment (5) below, the external diameter of upper segment (5) is less than the external diameter of lower segment (7), connect each other through conical surface (6) between upper segment (5) and the lower extreme, inhale cavity (13) upper end inner wall symmetry and be provided with limit structure, limit structure's lower extreme offered inclined plane (610) with conical surface (6) mutually supporting;
an anti-rotation pin (11) is arranged on the upper section (5) at one side of the positioner body (1) along the horizontal direction, an anti-rotation limit eccentric groove (1110) which is mutually matched with the anti-rotation pin (11) is formed in the inner wall of the upper end of the suction cavity (13), and the lower end of the anti-rotation limit eccentric groove (1110) penetrates through a limit structure; the positioning device body and the anti-rotation pin are subjected to downward external force, so that the positioning device body and the anti-rotation pin are positioned between the two limiting structures, then the positioning device body (1) is kept under the downward external force and simultaneously rotated by 90 degrees, the left end and the right end of the positioning device body are rotated to the lower part of the limiting structures, the anti-rotation pin is positioned under the anti-rotation limiting eccentric groove (1110), then the downward external force of the positioning device body (1) is removed, the positioning device body (1) and the anti-rotation pin (11) move upwards under the external force of the suction spring (10), and the anti-rotation pin (11) enters the anti-rotation limiting eccentric groove (1110) from the opening at the lower end of the anti-rotation limiting eccentric groove (1110);
the inner wall of the suction cavity (13) is provided with a horizontal mounting hole positioned above the limiting structure, an auxiliary positioning cylinder (12) is arranged in the horizontal mounting hole, and the side wall of the auxiliary positioning cylinder (12) is positioned at the upper end of the positioning groove (4).
2. A Y-spring retainer for a frac pump fluid end according to claim 1, wherein the taper angle θ of the conical surface (6) is 15-75 °.
3. The Y-shaped spring retainer for a frac pump fluid end of claim 1, wherein the anti-rotation limit eccentric groove (1110) has a width greater than the anti-rotation pin (11) by 2-5mm.
4. The Y-shaped spring retainer for a hydraulic end of a fracturing pump according to claim 1, wherein the retainer body (1) is provided with a plurality of through holes (2) in a penetrating manner in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299709.9A CN109915357B (en) | 2019-04-15 | 2019-04-15 | Y-shaped spring positioner for hydraulic end of fracturing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299709.9A CN109915357B (en) | 2019-04-15 | 2019-04-15 | Y-shaped spring positioner for hydraulic end of fracturing pump |
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| Publication Number | Publication Date |
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| CN109915357A CN109915357A (en) | 2019-06-21 |
| CN109915357B true CN109915357B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910299709.9A Active CN109915357B (en) | 2019-04-15 | 2019-04-15 | Y-shaped spring positioner for hydraulic end of fracturing pump |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8915722B1 (en) * | 2009-02-23 | 2014-12-23 | George H. Blume | Integrated fluid end |
| CN207879585U (en) * | 2018-01-31 | 2018-09-18 | 山东科瑞泵业有限公司 | A kind of new-type fracturing pump spring support |
| CN209761705U (en) * | 2019-04-15 | 2019-12-10 | 宝石机械成都装备制造分公司 | Y-shaped spring positioner for hydraulic end of fracturing pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7364412B2 (en) * | 2004-08-06 | 2008-04-29 | S.P.M. Flow Control, Inc. | System, method, and apparatus for valve stop assembly in a reciprocating pump |
| US7681589B2 (en) * | 2006-06-21 | 2010-03-23 | Fmc Technologies, Inc. | Pump valve retainer |
| US20090142199A1 (en) * | 2007-11-29 | 2009-06-04 | Halliburton Energy Services, Inc. | Quick lift zero flutter oil service pump valve |
| US8069923B2 (en) * | 2008-08-12 | 2011-12-06 | Halliburton Energy Services Inc. | Top suction fluid end |
| WO2015012800A1 (en) * | 2013-07-23 | 2015-01-29 | Halliburton Energy Services, Inc. | Erosion, corrosion, and fatigue prevention for high-pressure pumps |
| US9605767B2 (en) * | 2014-06-11 | 2017-03-28 | Strom, Inc. | Systems and methods utilizing a grooveless fluid end for high pressure pumping |
-
2019
- 2019-04-15 CN CN201910299709.9A patent/CN109915357B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8915722B1 (en) * | 2009-02-23 | 2014-12-23 | George H. Blume | Integrated fluid end |
| CN207879585U (en) * | 2018-01-31 | 2018-09-18 | 山东科瑞泵业有限公司 | A kind of new-type fracturing pump spring support |
| CN209761705U (en) * | 2019-04-15 | 2019-12-10 | 宝石机械成都装备制造分公司 | Y-shaped spring positioner for hydraulic end of fracturing pump |
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| CN109915357A (en) | 2019-06-21 |
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