CN113123962A - Ball cage type one-way valve and plunger pump - Google Patents
Ball cage type one-way valve and plunger pump Download PDFInfo
- Publication number
- CN113123962A CN113123962A CN201911424345.9A CN201911424345A CN113123962A CN 113123962 A CN113123962 A CN 113123962A CN 201911424345 A CN201911424345 A CN 201911424345A CN 113123962 A CN113123962 A CN 113123962A
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- valve
- cage
- ball
- sealing
- compression spring
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a ball cage type one-way valve and a plunger pump, wherein the ball cage type one-way valve comprises a valve seat (1), a sealing ball (3), a compression spring (4) and a cage (5), the valve seat is provided with a valve hole for fluid to pass through, the cage comprises a frame body and a plurality of supporting rods parallel to the axis of the valve hole, the supporting rods are arranged along a circle taking the axis of the valve hole as the center and surround the port of the valve hole, one end of each supporting rod is fixedly connected with the valve seat, and the other end of each supporting rod is fixedly connected with the frame body. The ball sealer is arranged in the cage, one end of the compression spring is abutted against one side of the ball sealer, which is back to the valve hole, and the other end of the compression spring penetrates through the frame body and extends out of the cage. The ball cage type one-way valve can effectively avoid the cracking accident of the cage frame caused by the opening movement of the sealing ball, and has longer service life.
Description
Technical Field
The invention relates to the technical field of one-way valves, in particular to a ball cage type one-way valve and a plunger pump.
Background
In the process of petroleum development operation, the manual temporary plugging diversion fracturing technology is characterized in that a prepared temporary plugging agent is injected into an underground rock stratum through a high-pressure pump truck, natural cracks or artificial cracks of the rock stratum are temporarily plugged by the temporary plugging agent, and fluid is forced to divert to other places to form new artificial cracks, so that the purpose of increasing yield is achieved.
The temporary plugging agent filling equipment is a high-pressure pump truck, and the key component of the pump truck is a reciprocating plunger pump. Install the check valve in the suction port and the discharge hole of plunger pump, it is common at present a ball cage formula check valve, the ball sealer is restricted in the cage with disk seat fixed connection, because the ball sealer can hit the other end to the relative disk seat of cage at the check valve opening in-process, so be provided with cushion on the cage usually, however, under the long-time impact of high strength, cushion often damages very fast, the framework on cage top can ftracture very fast immediately, cause the check valve life short, therefore, how to improve ball cage formula check valve in order to improve life, become the problem that the skilled person in the art needs a lot of attention to be solved.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a ball-type check valve having a long service life, and it is another object of the present invention to provide a plunger pump including the ball-type check valve.
In order to achieve the purpose, the invention provides the following technical scheme:
a ball cage one-way valve comprising:
a valve seat having a valve hole through which a fluid passes;
the cage comprises a frame body and a plurality of support rods parallel to the axis of the valve hole, the support rods are arranged along a circle with the axis of the valve hole as the center and surround the port of the valve hole, one end of each support rod is fixedly connected with the valve seat, and the other end of each support rod is fixedly connected with the frame body;
a sealing ball located in the cage;
and one end of the compression spring is abutted against one side of the sealing ball, which is back to the valve hole, and the other end of the compression spring penetrates through the frame body and extends out of the cage.
Preferably, in the ball-type check valve, the ball-type check valve further comprises a spring centralizer, the spring centralizer is a disk body with a central hole, one surface of the spring centralizer is provided with a convex ring surrounding the central hole, and the convex ring is used for being clamped with one end of the compression spring far away from the sealing ball.
Preferably, in the birfield check valve described above, the spring centraliser is a spoked disc.
Preferably, in the ball-cage type check valve, an outer contour of the compression spring is a truncated cone shape, a large end of the compression spring abuts against the sealing ball, and a small end of the compression spring abuts against the spring centralizer.
Preferably, in the birfield check valve, one end of the valve hole close to the sealing ball is a stepped hole, and a valve port ring in sealing contact with the sealing ball is installed in the stepped hole.
Preferably, in the birfield check valve, the valve port ring is in line contact with the sealing ball.
Preferably, in the birfield check valve, the frame and the support rod are of an integral structure.
Preferably, in the aforementioned rzeppa check valve, an annular groove for installing a sealing ring is formed on an outer circumferential surface of the valve seat.
A plunger pump is provided, wherein one-way valves are arranged in a suction hole and a discharge hole of a cylinder body of the plunger pump, and the one-way valves are ball cage type one-way valves disclosed in any one of the above.
Preferably, in the plunger pump, two of the ball-cage check valves are connected in series in each of the suction hole and the discharge hole.
According to the technical scheme, the cage comprises a frame body and a plurality of support rods, the support rods are parallel to the axis of the valve hole of the valve seat and are arranged along a circle with the axis of the valve hole as the center to surround the port of the valve hole, the sealing ball is located in the cage, one end of the compression spring is abutted to one side, back to the valve hole, of the sealing ball, the other end of the compression spring penetrates through the frame body of the cage to extend out of the cage, and when the ball sealing valve is used, one end, far away from the sealing ball, of the compression spring is abutted to the cylinder body of the plunger pump or a part fixed on the cylinder body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a ball cage type check valve provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the valve seat 1 and cage 5 of FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 2;
FIG. 5 is an elevational cross-sectional view of the spring centralizer 6 of FIG. 1;
FIG. 6 is a top view of the spring centralizer 6 of FIG. 1;
fig. 7 is a schematic structural diagram of a plunger pump according to an embodiment of the present invention.
Labeled as:
1. a valve seat; 11. a ring groove; 12. a stepped bore; 2. a valve orifice ring; 3. a sealing ball; 4. a compression spring; 5. a cage frame; 51. a support bar; 6. a spring centralizer; 7. a cylinder body; 71. a lubrication channel; 8. a plunger; 81. sealing the plunger; 91. a low pressure area gland; 92. a low pressure area pressure cap; 101. a high pressure zone gland; 102. a high pressure zone pressing cap; a1 and A2, inlet check valve; b1 and B2, outlet one-way valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, 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.
Referring to fig. 1 to 4, fig. 1 is a schematic structural view of a ball cage type check valve according to an embodiment of the present invention, fig. 2 is a schematic view of a valve seat 1 and a cage 5 in fig. 1, fig. 3 is a top view of fig. 2, and fig. 4 is a schematic sectional view taken along a-a in fig. 2.
The embodiment of the invention provides a ball cage type one-way valve, which comprises a valve seat 1, a sealing ball 3, a compression spring 4 and a cage 5, wherein the valve seat 1 is provided with a valve hole (not marked in the figure) for fluid to pass through, the sealing ball 3 is positioned in the cage 5, the cage 5 comprises a frame body (positioned at the top end in the figure 2 and not marked in the figure) and a plurality of support rods 51 parallel to the axis of the valve hole, the plurality of support rods 51 are arranged along a circle taking the axis of the valve hole as the center and surround the port of the valve hole, one end of each support rod 51 is fixedly connected with the valve seat 1, the other end of each support rod is fixedly connected with the frame body, one end of the compression spring 4 is abutted to one side of the sealing ball 3, which is back to the.
During the use, the one end of compression spring 4 far away from ball sealer 3 and the cylinder body of plunger pump or fix the part looks butt on the cylinder body, like this, at the opening in-process of rzeppa check valve, the impulsive force of ball sealer 3 can transmit to the cylinder body through compression spring 4 on, and can not be born by cage 5, consequently can effectively avoid cage 5 to take place the fracture accident, makes rzeppa check valve have longer life.
As shown in fig. 1 and 2, the sealing ball 3 moves back and forth along the valve hole axis of the valve seat 1 under the action of the radial limit and the axis guide of the cage 5. In order to realize better sealing between the sealing ball 3 and the valve seat 1, in the embodiment, one end of the valve hole close to the sealing ball 3 is a stepped hole 12, and a valve collar 2 for sealing contact with the sealing ball 3 is installed in the stepped hole 12.
In specific practical application, the line contact is preferred in the sealing contact between valve port circle 2 and the ball sealer 3, like this, the large granule material in the temporary plugging agent can not be filled up at the contact site of ball sealer 3 and valve port circle 2, also can not prop up the gap with the sealing contact site of ball sealer 3 and valve port circle 2, when the check valve closed, the large granule material can be extruded by the contact site of ball sealer 3 and valve port circle 2, perhaps can be cut by the contact site of ball sealer 3 and valve port circle 2, therefore ball sealer 3 and valve port circle 2 can in time close sealedly, break off the high pressure and the low pressure at check valve both ends, avoid high-pressure liquid stream to get into the low pressure pipeline and cause the low pressure pipeline to suppress and explode, thereby guarantee the construction progress.
In order to make the compression spring 4 always apply force along the axial direction of the valve hole, the ball-type check valve of the embodiment further includes a spring centralizer 6, as shown in fig. 1, the spring centralizer 6 is a disk body with a central hole, and one surface of the spring centralizer 6 is provided with a convex ring surrounding the central hole, and the convex ring is used for clamping with one end of the compression spring 4 far away from the sealing ball 3.
As shown in fig. 5 and 6, to allow for a more comfortable passage of fluid, the spring centralizer 6 may be designed as a disk with spokes to increase the flow area.
In order to make the compression spring 4 press the sealing ball 3 more stably, the outer contour of the compression spring 4 is designed to be a truncated cone shape in the present embodiment, and as shown in fig. 1, the large end of the compression spring 4 abuts against the sealing ball 3 and the small end abuts against the spring centralizer 6.
In a specific practical application, the number of the support rods 51 may be 3 to 6, as shown by the shaded portion in fig. 4, the number of the support rods 51 in this embodiment is 3. In order to improve the structural strength, the frame and the support rod 51 are generally designed as an integral structure. In order to make the check valve sealingly contact with the inner wall of the suction hole or the discharge hole after being mounted on the cylinder of the plunger pump, the outer circumferential surface of the valve seat 1 is generally provided with a ring groove 11 for mounting a seal ring.
As shown in fig. 7, the embodiment of the present invention further provides a plunger pump, which includes a cylinder 7 and a plunger 8, wherein the cylinder 7 is provided with a lubrication passage 71, a plunger hole, a suction hole, and a discharge hole, the plunger 8 is slidably disposed in the plunger hole and sealed by a plunger seal 81, and a low-pressure-area pressure cover 91 and a low-pressure-area pressure cap 92 are installed at one end of the plunger hole. Inlet check valves a1 and a2 are connected in series in the suction hole, outlet check valves B1 and B2 are connected in series in the discharge hole, wherein the inlet check valves a1 and a2 and the outlet check valves B1 and B2 are ball cage type check valves as described in all the above embodiments. It should be understood that the opening movement direction of the sealing ball 3 of the inlet check valves a1 and a2 is directed to the inside of the cylinder 7, and the opening movement direction of the sealing ball 3 of the outlet check valves B1 and B2 is directed to the outside of the cylinder 7.
The working principle and the working process of the plunger pump are as follows:
when the plunger 8 moves leftwards and the plunger hole cavity is in a negative pressure state, the sealing ball 3 of the outlet one-way valves B1 and B2 is in contact sealing with the valve seat 1 under the action of the elastic force of the compression spring 4 and the negative pressure, namely, in a closed state. On the other hand, since the pressure of the negative pressure is greater than the elastic force of the compression spring 4, the sealing balls 3 of the inlet check valves a1 and a2 move toward the inside of the cylinder 7, away from the valve seat 1 thereof, i.e., open. The temporary plugging agent enters the plunger pump through the inlet one-way valves A1 and A2 to complete a liquid suction process.
The plunger 8 moves rightwards, the volume of the plunger hole cavity is reduced, the pressure in the cavity is increased, and at the moment, the sealing balls 3 of the inlet one-way valves A1 and A2 are in contact sealing with the valve seat 1 under the action of the compression spring 4 and the pressure in the cavity, namely, the valve seat is in a closed state. On the other hand, since the pressure in the chamber is greater than the elastic force of the compression spring 4, the sealing ball 3 of the outlet check valves B1 and B2 moves to the outside of the cylinder 7, away from the valve seat 1 thereof, i.e., opens, and the temporary plugging agent is discharged out of the plunger pump through the outlet check valves B1 and B2, completing a liquid discharge process. As the plunger 8 reciprocates left and right in the plunger hole, the temporary plugging agent is continuously sucked and discharged.
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 (10)
1. A ball cage type check valve, comprising:
a valve seat (1), the valve seat (1) having a valve hole through which a fluid passes;
the valve seat comprises a cage (5), wherein the cage (5) comprises a frame body and a plurality of support rods (51) parallel to the axis of the valve hole, the support rods (51) are arranged along a circle with the axis of the valve hole as the center and surround the port of the valve hole, one end of each support rod (51) is fixedly connected with the valve seat (1), and the other end of each support rod is fixedly connected with the frame body;
a sealing ball (3), said sealing ball (3) being located in said cage (5);
and one end of the compression spring (4) is abutted against one side of the valve hole, which is back to the sealing ball (3), and the other end of the compression spring passes through the frame body and extends out of the cage (5).
2. A birfield one-way valve according to claim 1 further comprising a spring centraliser (6), the spring centraliser (6) being a disc with a central aperture, one face of the spring centraliser (6) having a collar around the central aperture for snap-fitting with an end of the compression spring (4) remote from the sealing ball (3).
3. The rzeppa one-way valve according to claim 2, characterized in that the spring centralizer (6) is a spoked disk.
4. A birfield one-way valve according to claim 2, wherein the outer profile of the compression spring (4) is frusto-conical, the large end of the compression spring (4) abutting the sealing ball (3) and the small end abutting the spring centraliser (6).
5. A birfield one-way valve according to claim 1, wherein the end of the valve bore adjacent to the sealing ball (3) is a stepped bore (12), and a valve bore ring (2) for sealing contact with the sealing ball (3) is mounted in the stepped bore (12).
6. A rzeppa one-way valve according to claim 5, characterized in that the valve port ring (2) is in line contact with the sealing balls (3).
7. A Rzeppa one-way valve according to any one of claims 1 to 6, wherein the frame is of one-piece construction with the support bar (51).
8. The rzeppa one-way valve according to claim 7, wherein the outer circumferential surface of the valve seat (1) is provided with a ring groove (11) for mounting a sealing ring.
9. A plunger pump having one-way valves mounted in the suction and discharge ports of the cylinder of the plunger pump, wherein the one-way valves are of the ball cage type according to any one of claims 1 to 9.
10. The plunger pump of claim 9, wherein two said rzeppa check valves are connected in series in both said suction port and said discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424345.9A CN113123962A (en) | 2019-12-31 | 2019-12-31 | Ball cage type one-way valve and plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424345.9A CN113123962A (en) | 2019-12-31 | 2019-12-31 | Ball cage type one-way valve and plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113123962A true CN113123962A (en) | 2021-07-16 |
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ID=76769841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911424345.9A Pending CN113123962A (en) | 2019-12-31 | 2019-12-31 | Ball cage type one-way valve and plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113123962A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3308697A1 (en) * | 1983-03-11 | 1984-09-13 | Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen | Piston pump |
| CN101482110A (en) * | 2009-02-04 | 2009-07-15 | 贾念国 | Spherical valve core and membrane pump |
| CN203488727U (en) * | 2013-09-27 | 2014-03-19 | 范建国 | Christmas tree well mouth sampling anti-theft valve |
| CN205101219U (en) * | 2015-11-09 | 2016-03-23 | 中石化石油工程技术服务有限公司 | Plunger pump, plunger pump fluid end and sealed combination valve thereof |
| CN108350873A (en) * | 2015-11-11 | 2018-07-31 | 固瑞克明尼苏达有限公司 | Piston ball guiding piece for ball pump |
| CN110131154A (en) * | 2019-05-21 | 2019-08-16 | 台州高知科技有限公司 | Double containment check valve and plunger pump equipped with the valve |
-
2019
- 2019-12-31 CN CN201911424345.9A patent/CN113123962A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3308697A1 (en) * | 1983-03-11 | 1984-09-13 | Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen | Piston pump |
| CN101482110A (en) * | 2009-02-04 | 2009-07-15 | 贾念国 | Spherical valve core and membrane pump |
| CN203488727U (en) * | 2013-09-27 | 2014-03-19 | 范建国 | Christmas tree well mouth sampling anti-theft valve |
| CN205101219U (en) * | 2015-11-09 | 2016-03-23 | 中石化石油工程技术服务有限公司 | Plunger pump, plunger pump fluid end and sealed combination valve thereof |
| CN108350873A (en) * | 2015-11-11 | 2018-07-31 | 固瑞克明尼苏达有限公司 | Piston ball guiding piece for ball pump |
| CN110131154A (en) * | 2019-05-21 | 2019-08-16 | 台州高知科技有限公司 | Double containment check valve and plunger pump equipped with the valve |
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Application publication date: 20210716 |