CN210265099U - Anti-drop pull rod for hydraulic end of fracturing pump - Google Patents
Anti-drop pull rod for hydraulic end of fracturing pump Download PDFInfo
- Publication number
- CN210265099U CN210265099U CN201920484692.XU CN201920484692U CN210265099U CN 210265099 U CN210265099 U CN 210265099U CN 201920484692 U CN201920484692 U CN 201920484692U CN 210265099 U CN210265099 U CN 210265099U
- Authority
- CN
- China
- Prior art keywords
- pull rod
- shaft section
- drop
- head body
- hole
- Prior art date
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a fracturing pump fluid end anticreep pull rod, the pull rod is the step shaft structure, along pull rod axis direction have set gradually first shaft section, assemble the cylindrical second shaft section, conical third shaft section, cylindrical fourth shaft section and the fifth shaft section of anticreep ring; the anti-slip ring is installed in the outside of second shaft section, and the one end of anti-slip ring is interior conical surface, and the shape of interior conical surface and the shape looks adaptation of third shaft section, the other end of anti-slip ring is vertical face. When the pull rod is subjected to fatigue fracture, the pull rod is limited from moving along the axial direction by the matching of the inner conical surface of the anti-drop ring and the contact matching of the end surface of the anti-drop ring and the limiting end surface of the through hole of the pump head body, and the reverse movement of the pull rod along the axial direction is limited by the screw fit between the nut and the pull rod and the contact matching of the end surface of the nut and the side surface of the pump head body, so that the broken pull rod is effectively prevented from dropping from the stepped through hole of the pump head body, the damage degree of the fracturing pump when the pull rod breaks down is reduced, and the safety performance of equipment is improved.
Description
Technical Field
The utility model relates to an oil gas field bores adopts equipment technical field, specific fracturing pump fluid end anticreep pull rod that says so.
Background
The core component of a fracturing pump truck which is usually used in the fracturing construction site of an oil-gas field is a fracturing pump, and a hydraulic end pull rod and a pump head body of the existing fracturing pump are installed only by adopting the matching of shaft holes. The load working condition and the reciprocating working characteristic of the fracturing pump determine that fatigue fracture can occur after the pull rod reaches the service life, so that the pull rod at the hydraulic end of the pressure pump is separated from the pump head body, the use safety of the fracturing pump is threatened, and once the pull rod is separated, the danger and the difficulty of the maintenance work of the fracturing pump are greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fracturing pump fluid end anticreep pull rod to solve current fracturing pump fluid end pull rod and pump head body and adopt shaft hole complex mounting means, there is the problem that the pull rod takes place to break away from easily.
In order to solve the technical problem, the utility model discloses the technical scheme who takes does:
the utility model provides a fracturing pump fluid end anticreep pull rod, it is including installing the connection pull rod in the pump head body, and the one end of pull rod is connected with the fracturing pump case, the pull rod is the step shaft structure, has set gradually five shaft segments along pull rod axis direction: the first shaft section extends out of the pump head body and is connected with a nut, the cylindrical second shaft section is provided with an anti-drop ring, the conical third shaft section is provided with the anti-drop ring, the cylindrical fourth shaft section is matched with the through hole of the pump head body, and the fifth shaft section is connected with the pump shell, and the outer diameter of the second shaft section is smaller than that of the fourth shaft section; the anticreep ring is installed in the outside of second shaft section, and the one end of anticreep ring is the interior conical surface of outside diameter grow gradually, and the other end of anticreep ring is vertical face, the interior conical surface of anticreep ring and the third shaft section adaptation of pull rod.
Preferably, the first shaft section of the pull rod is in threaded connection with a nut, a blind hole is formed in one end of the nut, internal threads are formed in the inner wall of the blind hole, and the other end of the nut is a solid outer hexagon; and the outer wall of the first shaft section is provided with an external thread matched with the internal thread of the blind hole.
Preferably, the outer surface of the fifth shaft section of the pull rod is provided with an external thread.
Preferably, the anti-drop ring is formed by buckling two symmetrical semi-cylindrical circular rings.
Preferably, the pump head body is of a cuboid box type structure, a plurality of stepped through holes are formed in the width direction of the pump head body, the inner diameter of each through hole is matched with the outer diameter of each pull rod, and a limiting end face which limits axial movement of the anti-drop ring and is perpendicular to the axial line of each through hole is arranged in the middle of each through hole.
The utility model discloses when using, with anticreep ring lock on the second shaft section outer wall of pull rod, the interior conical surface of anticreep ring is laminated with the outer wall of third shaft section mutually. The pull rod is inserted into a proper through hole of the pump head body, and the end face of the anti-drop ring is in contact with the limiting end face of the through hole. The two ends of the pull rod are respectively positioned at the outer sides of the through holes, the first shaft section of the pull rod is in threaded connection with a nut, and the fifth shaft section of the pull rod is in threaded connection with the pump shell.
When the pull rod is subjected to fatigue fracture, the pull rod is limited from moving along the axial direction by the matching of the inner conical surface of the anti-drop ring and the contact matching of the end surface of the anti-drop ring and the limiting end surface of the through hole of the pump head body, and the reverse movement of the pull rod along the axial direction is limited by the screw fit between the nut and the pull rod and the contact matching of the end surface of the nut and the side surface of the pump head body, so that the broken pull rod is effectively prevented from dropping from the stepped through hole of the pump head body, the damage degree of the fracturing pump when the pull rod breaks down is reduced, and the safety performance of equipment is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a plan view of the present invention shown in fig. 1;
FIG. 3 is a diagram illustrating the usage status of the present invention;
FIG. 4 is a partial cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of the construction of the anti-slip ring;
FIG. 6 is a schematic view of the nut;
FIG. 7 is a schematic view in partial cutaway of the pump head body;
in the figure: 1. the anti-drop pump comprises a connecting rod 11, a first shaft section, 12, a second shaft section, 13, a third shaft section, 14, a fourth shaft section, 15, a fifth shaft section, 2, an anti-drop ring, 3, a pump head body, 4, a nut, 5, a blind hole, 6, an outer hexagonal body, 7, a through hole, 8 and a limiting end face.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, the fracturing pump hydraulic end anti-drop pull rod comprises a connecting pull rod 1 installed in a pump head body 3, wherein one end of the pull rod 1 is connected with a fracturing pump casing, the pull rod 1 is of a stepped shaft structure, and five shaft sections are sequentially arranged along the axial direction of the pull rod: a first shaft section 11 of the connecting nut 4 extending out of the pump head body 3, a cylindrical second shaft section 12 provided with the anti-drop ring 2, a conical third shaft section 13 provided with the anti-drop ring 2, a cylindrical fourth shaft section 14 matched with the through hole 7 of the pump head body 3 and a fifth shaft section 15 connected with the pump shell, wherein the outer diameter of the second shaft section 12 is smaller than that of the fourth shaft section 14; the anticreep ring 2 is installed in the outside of second shaft section 12, and the one end of anticreep ring 2 is the interior conical surface of outside diameter grow gradually, and the other end of anticreep ring 2 is vertical face, and the interior conical surface of anticreep ring 2 and the third shaft section 13 looks adaptation of pull rod 1.
The first shaft section 11 of the pull rod 1 is in threaded connection with a nut 4, a blind hole 5 is formed in one end of the nut 4, internal threads are formed in the inner wall of the blind hole 5, and the other end of the nut 4 is a solid outer hexagonal body 6; and the outer wall of the first shaft section 11 is provided with an external thread matched with the internal thread of the blind hole 5. The outer surface of the fifth shaft section 15 of the tie rod 1 is provided with external threads.
The anti-drop ring 2 is formed by buckling two symmetrical semi-cylindrical circular rings.
The pump head body 3 is of a cuboid box type structure, a plurality of step-shaped through holes 7 are formed in the width direction of the pump head body 3, the inner diameter of each through hole 7 is matched with the outer diameter of the pull rod 1, and a limiting end face 8 which limits axial movement of the anti-drop ring 2 and is perpendicular to the axial lead of each through hole 7 is arranged in the middle of each through hole 7.
The utility model discloses when using, with 2 locks of anticreep ring on the 12 outer walls of second shaft section of pull rod 1, the inner conical surface of anticreep ring 2 laminates with the outer wall of third shaft section 13 mutually. The pull rod 1 is inserted into a proper through hole 7 of the pump head body 3, and the end face of the anti-drop ring 2 is contacted with a limiting end face 8 of the through hole 7. Two ends of the pull rod 1 are respectively positioned at the outer sides of the through holes 7, a first shaft section 11 of the pull rod 1 is in threaded connection with a nut 4, and a fifth shaft section 15 of the pull rod 1 is in threaded connection with a pump shell.
When the pull rod 1 is subjected to fatigue fracture, the pull rod 1 is limited to move along the axial direction by the matching of the inner conical surface of the anti-drop ring 2 and the contact matching of the end surface of the anti-drop ring 2 and the limiting end surface 8 of the through hole 7 of the pump head body 3, the pull rod 1 is limited to move along the axial direction by the screw thread matching between the screw cap 4 and the pull rod 1 and the contact matching of the end surface of the screw cap 4 and the side surface of the pump head body 3, the broken pull rod 1 is effectively prevented from falling from the stepped through hole 7 of the pump head body 3, the damage degree of the broken pull rod 1 of the fracturing pump is reduced, and the safety performance of equipment is improved.
Claims (5)
1. The utility model provides a fracturing pump fluid end anticreep pull rod, it is including installing connection pull rod (1) in pump head body (3), and the one end of pull rod (1) is connected with the fracturing pump case, its characterized in that: pull rod (1) is the step shaft structure, has set gradually five shaft segments along pull rod axis direction: the pump comprises a first shaft section (11) extending out of the pump head body (3) and connected with a nut (4), a cylindrical second shaft section (12) assembled with an anti-drop ring (2), a conical third shaft section (13) assembled with the anti-drop ring (2), a cylindrical fourth shaft section (14) matched with a through hole (7) of the pump head body (3) and a fifth shaft section (15) connected with a pump shell, wherein the outer diameter of the second shaft section (12) is smaller than that of the fourth shaft section (14); the anti-drop ring (2) is arranged on the outer side of the second shaft section (12), one end of the anti-drop ring (2) is an inner conical surface with gradually increased outward diameter, the other end of the anti-drop ring (2) is a vertical surface, and the inner conical surface of the anti-drop ring (2) is matched with the third shaft section (13) of the pull rod (1).
2. The fracturing pump fluid end anti-drop pull rod of claim 1, wherein: the first shaft section (11) of the pull rod (1) is in threaded connection with the nut (4), a blind hole (5) is formed in one end of the nut (4), internal threads are formed in the inner wall of the blind hole (5), and the other end of the nut (4) is a solid outer hexagon (6); and the outer wall of the first shaft section (11) is provided with an external thread matched with the internal thread of the blind hole (5).
3. The fracturing pump fluid end anti-drop pull rod of claim 1 or 2, wherein: the outer surface of the fifth shaft section (15) of the pull rod (1) is provided with external threads.
4. The fracturing pump fluid end anti-drop pull rod of claim 3, wherein: the anti-drop ring (2) is formed by buckling two symmetrical semi-cylindrical circular rings.
5. The fracturing pump fluid end anti-drop pull rod of claim 4, wherein: the pump head body (3) is of a cuboid box type structure, a plurality of stepped through holes (7) are formed in the width direction of the pump head body (3), the inner diameter of each through hole (7) is matched with the outer diameter of the pull rod (1), and a limiting end face (8) which limits axial movement of the anti-drop ring (2) and is perpendicular to the axial lead of the through hole (7) is arranged in the middle of each through hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920484692.XU CN210265099U (en) | 2019-04-11 | 2019-04-11 | Anti-drop pull rod for hydraulic end of fracturing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920484692.XU CN210265099U (en) | 2019-04-11 | 2019-04-11 | Anti-drop pull rod for hydraulic end of fracturing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265099U true CN210265099U (en) | 2020-04-07 |
Family
ID=70021950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920484692.XU Active CN210265099U (en) | 2019-04-11 | 2019-04-11 | Anti-drop pull rod for hydraulic end of fracturing pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210265099U (en) |
-
2019
- 2019-04-11 CN CN201920484692.XU patent/CN210265099U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210265099U (en) | Anti-drop pull rod for hydraulic end of fracturing pump | |
| CN202144818U (en) | Lubrication type horsehead pin for oil pumping unit | |
| CN201363095Y (en) | Coupling preset type upset forging anti-dropping solid sucker rod | |
| CN202787670U (en) | Connector with rotating stop nuts | |
| CN215148667U (en) | Valve seat puller with hydraulic action | |
| CN201989112U (en) | Crank pin removing device for oil sucking machine | |
| CN212027685U (en) | Anti-torque and anti-corrosion tubing coupling | |
| CN201087694Y (en) | Safe and reliable long-life screw drill | |
| CN205533737U (en) | Drive connection form of pneumatic drilling machine main shaft for coal mine | |
| CN203962550U (en) | A kind of aluminium bar extruding type hydraulic cylinder piston locking device | |
| CN206655663U (en) | A kind of isometrical hollow pipe roofbolt of eccentric abrasion prevention | |
| CN201554405U (en) | Hydraulic grappling tool | |
| CN205400611U (en) | Sucker rod with antitorque function | |
| CN202833099U (en) | Anti abrasive tubular oil well pump valve cover | |
| CN204553483U (en) | Radially-compact type hydraulic nut | |
| CN210397465U (en) | Double-thread anti-loosening device for pulley block bearing | |
| CN218118005U (en) | Locking warning device of plunger pump pull rod | |
| CN113776235B (en) | A compressor anti-overturning mounting structure for air conditioner or dehumidifier | |
| CN218325249U (en) | Novel piston assembly | |
| CN112628268B (en) | Bolt and nut assembly capable of effectively preventing disassembly | |
| CN217558267U (en) | Upsetting-free anti-tripping sucker rod | |
| CN203515365U (en) | Casing pipe female thread protector easy to assemble and disassemble | |
| CN218030594U (en) | Pull rod and fracturing pump | |
| CN213205655U (en) | Signal rod assembly and signal valve rod connecting assembly for drilling inclinometer | |
| CN109555723B (en) | Detachable impeller seal head structure for dredge pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211108 Address after: 730314 No. 508, west section of Yellow River Avenue, Lanzhou New Area, Lanzhou City, Gansu Province Patentee after: LANZHOU LS PETROLEUM EQUIPMENT ENGINEERING CO.,LTD. Address before: Qilihe District of Gansu city in Lanzhou province 730050 Xijin Road No. 196 Patentee before: LANZHOU LS ENERGY EQUIPMENT ENGINEERING RESEARCH INSTITUTE Co.,Ltd. |