CN112502962A - Hydraulic end assembly convenient to mount - Google Patents
Hydraulic end assembly convenient to mount Download PDFInfo
- Publication number
- CN112502962A CN112502962A CN202011378914.3A CN202011378914A CN112502962A CN 112502962 A CN112502962 A CN 112502962A CN 202011378914 A CN202011378914 A CN 202011378914A CN 112502962 A CN112502962 A CN 112502962A
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- China
- Prior art keywords
- discharge
- valve
- mounting part
- gland
- cavity
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
- F04B53/1017—Semi-spherical ball valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a hydraulic end assembly convenient to install, which comprises a valve box, wherein the valve box is connected with a power end through a plunger, and a discharge valve cavity, a suction valve cavity, a plunger cavity and a cover plugging hole which are mutually communicated with an inner cavity are arranged in the valve box; the method is characterized in that: a first mounting part is arranged in the discharge valve cavity; the first mounting part is internally provided with a boss surrounding the inner wall of the first mounting part and a recess positioned above the boss and surrounding the inner wall of the first mounting part; the first mounting part is arranged above the second mounting part, and a butting part which is attached to the inner wall of the second mounting part is arranged in the second mounting part; and the discharge valve assembly is arranged in the discharge valve cavity and comprises a discharge gland, and the discharge gland performs first-step position limitation through a boss. Has the advantages that: the device can enhance the stability of the device in the discharge stroke and the transition of the discharge stroke and the suction stroke.
Description
Technical Field
The invention relates to a hydraulic end assembly convenient to install, and belongs to the field of cracking pressure pumps.
Background
The plunger pump is an important device of the hydraulic system. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like, and is widely applied to occasions with high pressure, large flow and flow needing regulation, such as hydraulic machines, engineering machinery and ships.
In particular, in the operations of fracturing, cementing, sand prevention and acidification in oil fields, a large number of plunger pumps are used, and the commonly used plunger pumps are three-cylinder plunger pumps or five-cylinder plunger pumps, so that the power is high and the work is stable.
The key component of the system is a reciprocating high-pressure plunger pump generating high pressure, and the system mainly comprises a power end and a hydraulic end. The power end mainly converts the rotation motion of the driving shaft into the reciprocating motion of the plunger, and the hydraulic end connected with the plunger mainly realizes the periodic change of the volume of the inner cavity of the plunger through the reciprocating motion of the plunger and the opening and closing of the valve. The hydraulic end mainly comprises a valve box, a valve body seat, a plunger, a sealing packing, a spring seat and the like. The valve box consists of a suction valve body hole, a discharge valve body hole, a plunger piston hole, a blocking cover hole and the like. In the suction stroke, the plunger is drawn out along the plunger hole, the pressure in the inner cavity of the valve box is rapidly reduced, the suction valve is opened, and the liquid is rapidly introduced into the inner cavity of the valve box due to the pressure difference between the inside and the outside of the suction valve; during the exhaust stroke, the intake valve closes and fluid pressure increases gradually until the exhaust valve opens, pumping fluid into the high pressure exhaust manifold.
Fracturing operation among the prior art needs to use very high pressure, and longer operating time hydraulic end when the discharge stroke carries out work, and pressure in the twinkling of an eye is great, can strike valve body, valve body seat, can lead to the inside spare part wearing and tearing of device and damage, influences the efficiency of work.
Disclosure of Invention
The invention aims to provide a hydraulic end assembly convenient to mount, and a valve box structure and a valve body structure are improved, so that the valve box and the valve body can resist higher-strength pressure.
In order to solve the technical problems, the invention is realized by the following technical scheme: the valve box is connected with a power end through a plunger, and a discharge valve cavity, a suction valve cavity, a plunger cavity and a cover plugging hole which are mutually communicated with an inner cavity are arranged in the valve box; the method is characterized in that: a first mounting part is arranged in the discharge valve cavity; the first mounting part is internally provided with a boss surrounding the inner wall of the first mounting part and a recess positioned above the boss and surrounding the inner wall of the first mounting part; the first mounting part is arranged above the second mounting part, and a butting part which is attached to the inner wall of the second mounting part is arranged in the second mounting part; a discharge valve assembly disposed within the discharge valve cavity, the discharge valve assembly including a discharge gland that is first step position defined by the boss, and that extends externally into the recess with a lower end abutting against the abutment; the centralizer is arranged below the discharge gland and is positioned in the second mounting part; the valve ball is arranged below the centralizer and is integrally formed with the centralizer; the upper end and the lower end of the abutting part are communicated and clamped on the inner wall of the discharge valve cavity, the peripheral surface of the inner surface of the abutting part is provided with an arc surface, the upper end of the abutting part is also provided with an abutting ring, and the upper end surface of the abutting ring is an inclined plane inclined towards the inner wall from the outer peripheral surface of the abutting ring.
Further: the lower end face of the discharge gland is provided with an arc-shaped recess, and the upper end face of the valve ball is provided with an arc-shaped bulge; when the valve ball is contacted with the discharge gland, the arc-shaped recess is in sealing fit with the arc-shaped protrusion.
Further: the discharge valve assembly further comprises a discharge pressure cap, the upper end and the lower end of the discharge pressure cap are communicated, and the discharge pressure cap is arranged at the upper end of the discharge pressure cover.
Further: an elastic part is arranged between the centralizer and the discharge gland.
Further: the discharge valve assembly further includes a valve seat disposed below the valve ball and located within the second mounting portion.
Further: the discharge valve cover peripheral surface has at least one first annular of align to grid, be provided with first sealing washer in the first annular.
Further: the outer peripheral surface of the abutting part is provided with at least one second annular groove which is uniformly arranged, and the second annular groove can be provided with a second sealing ring.
The first sealing ring and the second sealing ring are made of uniform elastic materials.
Compared with the prior art, the invention has the advantages that:
in the discharging stroke, the valve ball is pressed to move upwards, the pressure acts on the discharging valve component, the peripheral surface of the discharging gland extends into the recess, and the boss is matched with the discharging gland, so that the stability of the discharging gland can be improved; when the discharge stroke is converted into the suction stroke, the pressure direction is reversed, the direction of the force applied to the discharge valve assembly is changed, and in the process, the resistance of the discharge gland can be increased by utilizing the inclined surface of the abutting ring, so that the discharge valve assembly has good stability during stroke conversion; and push the valve ball to move to the valve chamber, here utilize the cambered surface on the butt portion can increase the resistance of valve ball, further increase discharge valve assembly's stability.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is an internal cross-sectional view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a cross-sectional view of the valve box of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at B;
fig. 5 is a front view of the valve box of the present invention.
Description of reference numerals:
1. a valve box; 2. an inner cavity; 3. a discharge valve cavity; 4. a suction valve cavity; 5. a plunger cavity; 6. plugging the cover hole; 7. a first mounting portion; 71. a boss; 72. recessing; 8. a second mounting portion; 81. an abutting portion; 811. a second seal ring; 82. a butting ring; 83. a cambered surface; 84. a bevel; 9. a discharge valve assembly; 91. a discharge gland; 911. an arc-shaped concave surface; 912. a first seal ring; 92. a centralizer; 93. a valve ball; 931. an arc-shaped protrusion; 94. discharging the pressure cap; 95. an elastic portion; 96. a valve seat.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-5, an embodiment of a fluid end assembly convenient to mount according to the present invention includes a valve box 1, the valve box 1 is connected to a power end through a plunger, and a discharge valve cavity 3, a suction valve cavity 4, a plunger cavity 5 and a cap blocking hole 6 are disposed in the valve box 1 and are communicated with an inner cavity 2; the method is characterized in that: a first mounting part 7 is arranged in the discharge valve cavity 3; the first mounting part 7 is internally provided with a boss 71 surrounding the inner wall of the first mounting part 7 and a recess 72 positioned above the boss 71 and surrounding the inner wall of the first mounting part 7; the first mounting part 7 is arranged above the second mounting part 8, and the second mounting part 8 is internally provided with a contact part 81 which is attached to the inner wall of the second mounting part 8; the discharge valve assembly 9, the discharge valve assembly 9 is set up in the discharge valve chamber 3, the discharge valve assembly 9 includes the discharge gland 91, the discharge gland 91 carries on the first step position to limit through the boss 71, and the discharge gland 91 extends to the recess 72 outside, the lower end is abutted on abutting part 81; a centralizer 92, the centralizer 92 being disposed below the discharge gland 91 and within the second mounting portion 8; the valve ball 93 is arranged below the centralizer 92, and the valve ball 93 and the centralizer 92 are integrally formed; wherein, the upper and lower ends of the abutting part 81 are through and clamped on the inner wall of the discharge valve cavity 3, the inner peripheral surface of the abutting part 81 is provided with an arc surface 83, the upper end of the abutting part 81 is also provided with an abutting ring 82, and the upper end surface of the abutting ring 82 is an inclined surface 84 inclined from the outer peripheral surface of the abutting ring 82 to the inner wall.
The number of the inner cavities 2 arranged in the valve box 1 is five, the number of the discharge valve cavity 3, the suction valve cavity 4, the plunger cavity 5 and the cap blocking hole 6 which are correspondingly arranged is five, the plunger is arranged in the plunger cavity 5 and is connected with the power end, and the operation effect can be obviously improved by utilizing the five power ends; the function of the hydraulic end for improving the pressure of the pumped fluid is to drive the reciprocating motion of the plunger through the power end. The volume and the internal pressure of the inner cavity 2 of the hydraulic end valve box 1 change periodically. When the plunger moves outwards along the horizontal direction (suction stroke), the pressure of the inner cavity 2 of the valve box 1 is reduced, the suction valve is opened by overcoming the suction gradually under the action of the pressure difference of the inner cavity and the outer cavity, and the pumped liquid enters from the suction manifold and fills the inner cavity 2; when the plunger moves in the horizontal direction towards the chamber 2 (the discharge stroke), the fluid pressure in the chamber 2 increases gradually and exceeds the pressure of the discharge high pressure manifold enough to overcome the resistance of the discharge valve ball 93 and open the discharge valve assembly 9; in the process, the valve ball 93 moves upwards under pressure, the pressure acts on the discharge valve assembly 9, and the stability of the discharge gland 91 can be improved through the extension of the outer peripheral surface of the discharge gland 91 into the recess 72 and the matching of the boss 71 and the discharge gland 91; during the transition from the discharge stroke to the suction stroke, the pressure direction is reversed and the direction of the force applied to the discharge valve assembly 9 is changed, during which the resistance of the discharge gland 91 can be increased by the inclined surface 84 of the abutment ring 82, so that the discharge valve assembly 9 has good stability during the transition from the stroke; and pushes the valve ball 93 towards the valve chamber 2, where the resistance of the valve ball 93 can be increased by means of the curved surface 83 on the abutment 81, further increasing the stability of the discharge valve assembly 9.
In this embodiment: the lower end face of the discharge gland 91 is provided with an arc-shaped concave surface 911, and the upper end face of the valve ball 93 is provided with an arc-shaped protrusion 931; when the valve ball 93 contacts the discharge gland 91, the arc-shaped concave surface 911 and the arc-shaped protrusion 931 are in sealing fit.
When the discharge stroke is performed, the valve ball 93 is lifted, and the arc-shaped concave surface 911 and the arc-shaped protrusion 931 are brought into close contact with each other, thereby offsetting a part of the impact pressure and increasing the stability of the discharge valve assembly 9.
In this embodiment: the discharge valve assembly 9 further includes a discharge pressure cap 94, and the upper end and the lower end of the discharge pressure cap 94 are connected to each other and disposed at the upper end of the discharge pressure cover 91.
The discharge gland 91 can be further restricted by the discharge gland 94, and the pressure generated by the discharge stroke is transmitted from the discharge gland 91 to the discharge gland 94, thereby improving the stability of the discharge valve assembly 9.
In this embodiment: an elastic portion 95 is provided between the centralizer 92 and the discharge gland 91.
Here, the elastic portion 95 may be formed of an elastic sheet and a spring, and preferably, a spring, and the elastic potential energy of the spring may be used to increase the pressure resistance in cooperation with the gravity of the valve ball 93 itself, thereby improving the stability of the discharge valve assembly 9.
In this embodiment: the discharge valve assembly 9 further comprises a valve seat 96, the valve seat 96 being disposed below the valve ball 93 and within the second mounting portion 8.
In this embodiment: the outer peripheral surface of the discharge gland 91 is provided with at least one first annular groove which is uniformly arranged, and a first seal ring 912 is arranged in the first annular groove.
The first seal ring 912 can seal the fitting gap between the discharge gland 91 and the valve housing 1, and prevent the liquid from flowing back and leaking from the fitting gap between the discharge valve assembly 9 and the valve housing 1.
In this embodiment: at least one second ring groove is uniformly arranged on the outer peripheral surface of the abutting part 81, and a second sealing ring 811 can be arranged on the second ring groove.
The second seal ring 811 can seal the fitting gap between the abutting portion 81 and the valve housing 1, and prevent the liquid from flowing back and leaking from the fitting gap between the abutting portion 81 and the valve housing 1.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (7)
1. A hydraulic end assembly convenient to mount comprises a valve box, wherein the valve box is connected with a power end through a plunger, and a discharge valve cavity, a suction valve cavity, a plunger cavity and a cover plugging hole which are communicated with an inner cavity are arranged in the valve box; the method is characterized in that: a first mounting part is arranged in the discharge valve cavity; the first mounting part is internally provided with a boss surrounding the inner wall of the first mounting part and a recess positioned above the boss and surrounding the inner wall of the first mounting part;
the first mounting part is arranged above the second mounting part, and a butting part which is attached to the inner wall of the second mounting part is arranged in the second mounting part;
a discharge valve assembly disposed within the discharge valve cavity, the discharge valve assembly including
The discharge gland is subjected to first-step position limitation through the boss, the outer part of the discharge gland extends into the recess, and the lower end of the discharge gland is abutted against the abutting part;
the centralizer is arranged below the discharge gland and is positioned in the second mounting part;
the valve ball is arranged below the centralizer and is integrally formed with the centralizer;
the upper end and the lower end of the abutting part are communicated and clamped on the inner wall of the discharge valve cavity, the peripheral surface of the inner surface of the abutting part is provided with an arc surface, the upper end of the abutting part is also provided with an abutting ring, and the upper end surface of the abutting ring is an inclined plane inclined towards the inner wall from the outer peripheral surface of the abutting ring.
2. The easy-to-install fluid end assembly of claim 1, wherein: the lower end face of the discharge gland is provided with an arc-shaped concave surface, and the upper end face of the valve ball is provided with an arc-shaped bulge; when the valve ball is contacted with the discharge gland, the arc-shaped concave surface is in sealing fit with the arc-shaped bulge.
3. The easy-to-install fluid end assembly of claim 1, wherein: the discharge valve assembly further comprises a discharge pressure cap, the upper end and the lower end of the discharge pressure cap are communicated, and the discharge pressure cap is arranged at the upper end of the discharge pressure cover.
4. The easy-to-install fluid end assembly of claim 1, wherein: an elastic part is arranged between the centralizer and the discharge gland.
5. The easy-to-install fluid end assembly of claim 1, wherein: the discharge valve assembly further includes a valve seat disposed below the valve ball and located within the second mounting portion.
6. The easy-to-install fluid end assembly of any one of claims 1-5, wherein: the discharge gland periphery has at least one first annular of align to grid, be provided with first sealing washer in the first annular.
7. The easy-to-install fluid end assembly of any one of claims 1-5, wherein: the outer peripheral surface of the abutting part is provided with at least one second annular groove which is uniformly arranged, and the second annular groove can be provided with a second sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378914.3A CN112502962A (en) | 2020-11-30 | 2020-11-30 | Hydraulic end assembly convenient to mount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378914.3A CN112502962A (en) | 2020-11-30 | 2020-11-30 | Hydraulic end assembly convenient to mount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112502962A true CN112502962A (en) | 2021-03-16 |
Family
ID=74968759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011378914.3A Pending CN112502962A (en) | 2020-11-30 | 2020-11-30 | Hydraulic end assembly convenient to mount |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112502962A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030235508A1 (en) * | 2002-06-19 | 2003-12-25 | Vicars Berton L. | Fluid end |
| US20040234404A1 (en) * | 2003-05-20 | 2004-11-25 | Vicars Berton L. | Fluid end assembly |
| CN104265260A (en) * | 2014-09-19 | 2015-01-07 | 上海清河机械有限公司 | Fluid end assembly |
| CN204113630U (en) * | 2014-09-19 | 2015-01-21 | 上海清河机械有限公司 | A kind of polymerization ball sealing configuration |
| CN204200554U (en) * | 2014-09-19 | 2015-03-11 | 上海清河机械有限公司 | A kind of ball centralizer structure |
| CN206329485U (en) * | 2016-12-22 | 2017-07-14 | 濮阳市中信激扬机械制造有限公司 | A kind of Novel plunger pump valve seat assembly |
| CN208763878U (en) * | 2018-09-28 | 2019-04-19 | 山东尤科斯石油装备有限公司 | Reciprocating energy conservation, Novel plunger pump clack box |
-
2020
- 2020-11-30 CN CN202011378914.3A patent/CN112502962A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030235508A1 (en) * | 2002-06-19 | 2003-12-25 | Vicars Berton L. | Fluid end |
| US20040234404A1 (en) * | 2003-05-20 | 2004-11-25 | Vicars Berton L. | Fluid end assembly |
| CN104265260A (en) * | 2014-09-19 | 2015-01-07 | 上海清河机械有限公司 | Fluid end assembly |
| CN204113630U (en) * | 2014-09-19 | 2015-01-21 | 上海清河机械有限公司 | A kind of polymerization ball sealing configuration |
| CN204200554U (en) * | 2014-09-19 | 2015-03-11 | 上海清河机械有限公司 | A kind of ball centralizer structure |
| CN206329485U (en) * | 2016-12-22 | 2017-07-14 | 濮阳市中信激扬机械制造有限公司 | A kind of Novel plunger pump valve seat assembly |
| CN208763878U (en) * | 2018-09-28 | 2019-04-19 | 山东尤科斯石油装备有限公司 | Reciprocating energy conservation, Novel plunger pump clack box |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210316 |
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| RJ01 | Rejection of invention patent application after publication |