CN212690017U

CN212690017U - Load displacement sensor buffer stop

Info

Publication number: CN212690017U
Application number: CN202021134837.2U
Authority: CN
Inventors: 王文生; 王学梅; 牛占坡; 李海滨; 李辉; 韩崇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-03-12
Anticipated expiration: 2030-06-18

Abstract

The utility model provides a load displacement sensor buffer stop relates to the oil recovery well and has pole oil recovery equipment field. The anti-collision device of the load displacement sensor is arranged between a rope hanger and a square clamp of the oil pumping unit and comprises a bearing plate, a polish rod pipe-penetrating short joint and a base plate; a polish rod through hole is formed in the center of the bearing plate, the bearing plate penetrates through the polish rod through hole to be fixed on the rope hanger, the lower end of the polish rod through pipe short joint is connected with the bearing plate, the load displacement sensor is sleeved on the polish rod through pipe short joint, the height of the polish rod through pipe short joint is larger than that of the load displacement sensor, and the upper end of the polish rod through pipe short joint is sleeved in the U-shaped groove of the backing plate; when the polished rod lags behind, the polished rod eye and the square clip bump, very easily cause load displacement sensor to damage, set up buffer stop on load displacement sensor, can reach the purpose of avoiding the striking to damage load displacement sensor.

Description

Load displacement sensor buffer stop

Technical Field

The utility model relates to a production well has pole oil recovery equipment field, in particular to load displacement sensor buffer stop.

Background

The load displacement sensor is arranged between the beam hanger and the square clamp of the pumping unit of the oil field rod oil extraction equipment, and is used for testing an oil well indicator diagram under a normal stress state, due to reasons of oil viscosity, sand production of an oil layer, wax deposition, eccentric wear and the like, during oil well production, a polished rod lags, in a down stroke time period of an oil well pump, stroke displacement is opposite to the up displacement direction of the pumping unit, the beam hanger and the square clamp are impacted, a large impact load can be generated during impact, the existence of the impact load can damage the pumping unit equipment, the polished rod and a rod column, the load displacement sensor is arranged between the beam hanger and the square clamp of the pumping unit, the beam hanger and the square clamp are impacted, and the load displacement sensor is easily damaged. If can set up buffer stop on load displacement sensor, can effectively avoid load displacement sensor to receive the load impact and damage, prolong load displacement sensor's life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a load displacement sensor buffer stop avoids load displacement sensor to receive the load to strike and damage, prolongs load displacement sensor's life.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a load displacement sensor anti-collision device is arranged between a beam hanger and a square clamp of a pumping unit, wherein the beam hanger is an important component of the pumping unit and is used for connecting a steel wire rope (also called a hair braid) on a horse head of the pumping unit with an oil pumping polished rod, the steel wire rope bears an upward tensile load, the oil pumping polished rod bears a downward tensile load, the oil pumping polished rod penetrates through the center of the beam hanger, and two steel wire ropes are respectively connected with two ends of the beam hanger; this load displacement sensor buffer stop includes: the polished rod penetrating short circuit device comprises a bearing plate, a polished rod penetrating short circuit and a base plate, wherein a polished rod penetrates through a polished rod hanger and then sequentially penetrates through the bearing plate, the polished rod penetrating short circuit and the base plate from bottom to top, a polished rod perforation hole is formed in the center of the bearing plate, the bearing plate penetrates through the polished rod perforation hole and then is fixed on the polished rod hanger, the polished rod penetrating short circuit is a tubular body which is used for a polished rod to penetrate through and is in clearance fit with the polished rod, the lower end of the polished rod penetrating short circuit is connected with the bearing plate, the polished rod penetrating short circuit penetrates through the polished rod and is in clearance fit with the polished rod, a load displacement sensor is sleeved on the polished rod penetrating short circuit and is in clearance fit with the polished rod penetrating short circuit, the height of the polished.

The bearing plate is circular, and the central point puts and is provided with the polished rod perforation.

The polish rod pipe-penetrating short joint and the bearing plate are connected by threads or interference fit.

The thickness value of the backing plate plus the height value of the load displacement sensor is greater than the height value of the polished rod through pipe short joint.

The middle part of the backing plate is provided with a U-shaped groove and is sleeved at the outer diameter part of the polished rod through pipe short joint, and the U-shaped groove of the backing plate is in clearance fit with the outer diameter part of the polished rod through pipe short joint.

The backing plate is hung above the square clamp through a pull rope.

The utility model has the advantages that: when the device is normally used, force is transferred among the bearing plate, the load displacement sensor and the base plate; because the oil is thick, the oil reservoir goes out sand, wax deposition, reasons such as eccentric wear, during oil well production, the hysteresis can take place for the polished rod, in the time quantum of oil-well pump down stroke, stroke displacement and the displacement direction of the up stroke of beam-pumping unit are opposite, rope hanger and square clip take place the striking, make load displacement sensor receive the impact damage, set up load displacement sensor buffer stop, when the polished rod lags with square clip and backing plate, the backing plate withdraws from polished rod poling short circuit upper portion, the striking can take place when polished rod and square clip reset, during the striking, power transmits between square clip, polished rod poling short circuit and bearing plate, load displacement sensor is in the non-atress state, thereby reached and avoided striking load damage load displacement sensor's purpose.

Drawings

FIG. 1 is a schematic structural view of the utility model in use;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural view of the bearing plate of the present invention;

fig. 4 is a schematic structural view of the backing plate of the present invention.

In the figure: 1. a bearing plate; 2. the polish rod is connected with a pipe through short circuit; 3. a base plate; 4. a polish rod; 5. a square clip; 6. a load displacement sensor; 7. a wire rope; 8. a rope hanger; 9. a wire rope end; 10 pulling the rope.

Detailed Description

The structure of the present invention is described in detail below with reference to the accompanying drawings, as shown in fig. 1 to 4, the present invention provides a load displacement sensor anti-collision device, which is installed between a beam hanger 8 of a pumping unit and a square clamp 5, the beam hanger 8 is an important component of the pumping unit, a steel wire rope (also called a hair braid) 7 on a horsehead of the pumping unit and a pumping polished rod 4 are connected, the steel wire rope 7 bears an upward tensile load, the pumping polished rod 4 bears a downward tensile load, the pumping polished rod 4 passes through the center of the beam hanger 8, and two steel wire ropes 7 are respectively connected to two ends of the beam hanger 8; this load displacement sensor buffer stop includes: the polished rod 4 penetrates through the bearing plate 1, the polished rod pipe-penetrating short joint 2 and the backing plate 3 from bottom to top in sequence after penetrating through the rope hanger 8; the bearing plate 1 is circular, and a polish rod through hole is arranged in the center of the bearing plate; the polish rod pipe-penetrating short joint 2 is positioned between the bearing plate 1 and the backing plate 3, the polish rod pipe-penetrating short joint 2 is cylindrical, the outer diameter of the polish rod pipe-penetrating short joint is smaller than the width of a U-shaped groove of the backing plate 3, the moving position of the backing plate 3 is ensured, and the polish rod pipe-penetrating short joint is arranged into a tubular body so that a polish rod 4 can conveniently penetrate through the; the backing plate 3 is rectangular, and the middle part is provided with a U-shaped groove; the bearing plate 1 penetrates through the polish rod 4 through a polish rod perforation to be fixedly or movably connected to the polished rod eye 8, the lower end of the polish rod poling short circuit 2 is connected with the bearing plate 1 in a threaded or interference fit mode, the polish rod poling short circuit 2 penetrates through the polish rod 4 and is in clearance fit with the polish rod 4, normal movement of the polish rod 4 can be guaranteed through clearance fit, the load displacement sensor 6 is sleeved on the polish rod poling short circuit 2 and is in clearance fit with the polish rod poling short circuit 2, the load displacement sensor 6 is convenient to detach, the height of the polish rod poling short circuit 2 is larger than that of the load displacement sensor 6, the upper end of the polish rod poling short circuit 2 is sleeved in a U-shaped groove of the backing plate 3, the thickness value of the backing plate 3 and the height value of the load displacement sensor 6 are larger than that of the polish rod poling short circuit 2, in the embodiment, the height of the polish rod, the thickness of the backing plate 3 is 15 mm; when the load weight of the oil well transmits pressure through the backing plate 3, the load displacement sensor 6 works normally; in the time quantum of oil-well pump down stroke, the stroke displacement is opposite with the displacement direction that goes upward of beam-pumping unit, hysteresis can take place for polished rod 4 together with square checkpost 5 and backing plate 3, because backing plate 3 is made by the metal material that has certain thickness and certain weight, and beam-pumping unit during operation polished rod 4 has certain gradient and certain vibration, make backing plate 3 withdraw from smoothly from the upper portion of polished rod poling short circuit 2, backing plate 3 hangs in the square checkpost top through stay cord or extension spring 10, hang on the polished rod when withdrawing from, in order to avoid dropping the emergence accident, striking can take place when polished rod 4 and square checkpost 5 reset, during the striking, power is at square checkpost 5, transmit between polished rod poling short circuit 2 and bearing plate 1, load displacement sensor 6 is not atress, be in the non-stressed state.

By adopting the scheme, the phenomenon that the impact load damages the load displacement sensor 6 due to lagging of the polish rod 4 during production is avoided, the polish rod pipe penetrating short circuit 2 is connected with the bearing plate 1 in a threaded or interference fit mode, and the reliability of the structure of the anti-collision device of the load displacement sensor can be improved.

Example 2, referring to fig. 3, the bearing plate 1 of this example is circular, the center of the bearing plate is provided with a polished rod through hole, the outer circle diameter of the bearing plate 1 is 115mm, and the inner circle diameter is 30 mm.

Adopt above-mentioned scheme: the polished rod perforation of the bearing plate 1 penetrates through the polished rod 4 and is fixed on the polished rod eye 8, the bearing plate 1 is set to be circular, and a hole is formed in the center, so that the polished rod eye 8 is not inclined when the bearing plate works on site, and the center of the polished rod eye 8, the polished rod 4 and the wellhead of the Christmas tree are centered.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a load displacement sensor buffer stop which characterized in that: the anti-collision device of the load displacement sensor is arranged between a beam hanger (8) of the pumping unit and a square clamp (5), the beam hanger (8) is connected with a steel wire rope (7) on a mule head of the pumping unit and a polished pumping rod (4), the polished pumping rod (4) penetrates through the center of the beam hanger (8), and the two steel wire ropes (7) are respectively connected with two ends of the beam hanger (8); this load displacement sensor buffer stop includes: the polished rod pumping device comprises a bearing plate (1), a polished rod through pipe short joint (2) and a base plate (3), wherein a pumping polished rod (4) penetrates through the bearing plate (1), the polished rod through pipe short joint (2) and the base plate (3) from bottom to top in sequence after penetrating through a rope hanger (8); bearing plate (1) central point is equipped with the polished rod perforation, bearing plate (1) is fixed on polished rod eye (8) through polished rod perforation through oil pumping polished rod (4), the lower extreme and bearing plate (1) of polished rod poling short circuit (2) are connected, polished rod poling short circuit (2) are passed oil pumping polished rod (4) and are with oil pumping polished rod (4) clearance fit, load displacement sensor (6) suit is on polished rod poling short circuit (2), and with polished rod poling short circuit (2) clearance fit, the height that highly is greater than load displacement sensor (6) of polished rod poling short circuit (2), the U type inslot of backing plate (3) is emboliaed to the upper end of polished rod poling short circuit (2).

2. The anti-collision device for the load displacement sensor according to claim 1, wherein: the bearing plate (1) is circular, and a polish rod through hole is arranged in the center of the bearing plate.

3. The anti-collision device for the load displacement sensor according to claim 1, wherein: the connection of the polish rod pipe-penetrating short joint (2) and the bearing plate (1) adopts screw threads or interference fit.

4. The anti-collision device for the load displacement sensor according to claim 1, wherein: the thickness value of the backing plate (3) and the height value of the load displacement sensor (6) are greater than the height value of the polish rod pipe penetration short joint (2).

5. The anti-collision device for the load displacement sensor according to claim 1, wherein: the middle part of the backing plate (3) is provided with a U-shaped groove and is sleeved at the outer diameter part of the polish rod pipe-penetrating short joint (2), and the U-shaped groove of the backing plate (3) is in clearance fit with the outer diameter of the polish rod pipe-penetrating short joint (2).

6. The anti-collision device for the load displacement sensor according to claim 1, wherein: the backing plate (3) is hung above the square clamp through a pull rope.