CN217481254U

CN217481254U - Stroke frequency measuring device of oil pumping unit

Info

Publication number: CN217481254U
Application number: CN202221704709.6U
Authority: CN
Inventors: 杨洪雪; 陈文亮; 胡悦; 许哲; 王耀琛
Original assignee: Shandong Weatherford Highland Artificial Lifting Equipment Co ltd
Current assignee: Shandong Weatherford Highland Artificial Lifting Equipment Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-09-23
Anticipated expiration: 2032-07-05

Abstract

The utility model relates to the field of oil extraction equipment, in particular to a stroke frequency measuring device of an oil pumping unit, which comprises a target wheel ring, a fixed support and an inductive sensor, wherein the target wheel ring is connected with a rotating shaft of a reduction gearbox, the upper part of the target wheel ring is provided with an empty target and an inductive target which are arranged at intervals, the inductive target protrudes outwards and is internally provided with an inductive coil, the empty target is sunken inwards and is not internally provided with an inductive coil, the fixed support is of a Z-shaped structure and is fixed on a shell of the reduction gearbox beside the rotating shaft of the reduction gearbox, the inductive sensor is fixed on the fixed support, the upper part of the inductive sensor is provided with an inductive head, the inductive head is internally provided with an electromagnetic induction circuit, the inductive head is flush with the inductive target and points to the target wheel ring, the inductive sensor is electrically connected with an external PLC controller, the device can accurately calculate the running stroke frequency of the oil pumping unit through the pulse number collected by the sensor, the accuracy of data acquisition is greatly improved, and the structure is simple and the service life is long.

Description

Stroke frequency measuring device of oil pumping unit

Technical Field

The utility model relates to an oil recovery equipment device field, concretely relates to beam-pumping unit jig frequency measuring device.

Background

The pumping unit is the oil extraction equipment of exploitation oil reservoir, common pumping unit has beam-pumping unit and straight-line pumping unit, thereby two kinds of pumping units all drive and drive the pumping rod up and down reciprocating motion through the motor and exploit underground crude oil, need measure and record the stroke number of pumping unit and calculate conveyer belt's elasticity and exploitation speed at the in-process of exploitation, if can not accurate measurement stroke number then can not accurate obtain belt elasticity and exploitation speed's accurate numerical value, current domestic pumping unit design has the great problem of error to the stroke number measurement of pumping unit, in order to improve the reliability of pumping unit operation and data acquisition's accuracy nature, a pumping unit stroke number measuring device has been researched and developed.

The patent with application number 201220044299.7 discloses an automatic digital signal detector of stroke frequency of a petroleum pumping unit, including petroleum pumping unit, magnet, hall proximity switch, data processing module and control center, characterized by: the Hall proximity switch is arranged on the side surface of a connecting rod of the oil pumping unit, the magnet is arranged on the crank of the oil pumping unit at a position opposite to the Hall proximity switch, a signal of the Hall proximity switch is connected into the data processing module, data transmission is carried out between the data processing module and the control center through a wireless network, the data processing module transmits a detection result to the control center through the wireless network, the control center calculates the belt tightness of a transmission belt of the oil pumping unit according to the number of strokes in unit time obtained through detection, and therefore whether the oil pumping unit normally works is judged, however, the device is limited and only applied to a beam type oil pumping unit and cannot be applied to a linear type oil pumping unit, meanwhile, the problem of demagnetization easily occurs in the long-term vibration process of the magnet, and therefore the measurement of the number of strokes is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a beam-pumping unit jig frequency measuring device to the defect that prior art exists.

The technical scheme of the utility model is that:

a stroke frequency measuring device of an oil pumping unit comprises a target wheel ring, a fixed support and an inductive sensor, wherein the target wheel ring is connected with a rotating shaft of a reduction gearbox, the upper part of the target wheel ring is provided with empty targets and inductive targets which are arranged at intervals, the inductive targets protrude outwards and are internally provided with inductive coils, the empty targets are sunken inwards, the inductive coils are not arranged inside, the fixed support is of a Z-shaped structure and is fixed on a shell of the reduction gearbox beside the rotating shaft of the reduction gearbox, the inductive sensor is fixed on the fixed support, the upper part of the inductive sensor is provided with an inductive head, an inductive circuit is arranged in the inductive head, the inductive head is flush with the inductive targets and points to the target wheel ring, the inductive sensor is electrically connected with an external PLC (programmable logic controller), when the rotating shaft of the reduction gearbox rotates, the inductive targets and the empty targets alternately pass through the inductive head and generate uneven induction current in the inductive head, and the electric signal in the induction head is transmitted to the PLC through the inductive sensor.

Preferably, the fixed support is further provided with a dust cover, the dust cover is sleeved outside the target wheel ring, a hollowed induction hole is formed in one side of the dust cover, and the induction head penetrates through the induction hole to perform electromagnetic induction with the inductive target.

Preferably, the bottom of the fixed support is provided with a fixed bolt, and the fixed support is fixedly connected with the reduction gearbox shell through the fixed bolt.

Preferably, the lower part of the target wheel ring is provided with a tubular fixing pipe, and the target wheel ring is detachably connected with the rotating shaft of the reduction gearbox through the fixing pipe.

Preferably, the inductive head is further provided with a laser emitter and a photosensitive receiver, the outer end of the inductive target is coated with a reflective material, and the outer end of the hollow target is coated with a light absorption material.

The dust cover is made of a shading electromagnetic shielding material.

Compared with the prior art, the utility model, have following advantage:

the device can accurately calculate the running stroke frequency of the pumping unit by the pulse number acquired by two data acquisition modes, greatly improves the accuracy of data acquisition, and has the advantages of simple structure, long service life and high metering precision.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1-a reduction gearbox of the oil pumping unit, 2-a rotation shaft of the reduction gearbox, and 3-a shell of the reduction gearbox;

4-target wheel ring, 41-fixed tube, 42-inductive target, 43-empty target;

5-a fixed bracket, 51-a fixed bolt, 52-an induction hole and 53-a dust cover;

6-inductive sensor, 61-inductive head.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of various embodiments of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.

Example one

Referring to fig. 1, a stroke frequency measuring device of a pumping unit, compared with a traditional proximity switch fixed on a crank, the measuring position selected by the device is more flexible, the device can be installed on a rotating shaft of a reduction gearbox 1 of the pumping unit, thereby being suitable for two pumping unit forms of a beam pumping unit and a linear pumping unit, the device has a simple structure and convenient installation, the specific structure comprises a target wheel ring 4, a fixed support 5 and an inductive sensor 6, the target wheel ring 4 is detachably connected on the rotating shaft 2 of the reduction gearbox, the target wheel ring 4 comprises a fixed tube 41, an inductive target 42 and an empty target 43, the target wheel ring 4 is detachably connected with the rotating shaft 2 of the reduction gearbox through the fixed tube 41, the top end of the fixed tube 41 is provided with the empty target 43 and the inductive target 42 which are arranged at intervals, the inductive target 42 protrudes outwards and is provided with an inductive coil inside, the empty target 43 sinks inwards and is not provided with an inductive coil inside, the fixed support 5 has a Z-shaped structure, and the bottom end of the fixed on a shell 3 of the reduction gearbox beside the rotating shaft 2, the upper portion of fixed bolster 5 is provided with the hole of fretwork, inductance type sensor 6 passes through the fretwork hole and can dismantle with fixed bolster 5 and be connected, inductance type sensor 6's outer end is provided with inductive head 61, inductive head 61 sets up and directional target wheel ring 4 with inductance target 42 parallel and level, inductance type sensor 6 is connected with outside PLC controller electricity, the beam-pumping unit is in normal operating, when reducing gear box pivot 2 rotates, inductance target 42 and empty target 43 pass through the place ahead of inductive head 61 in turn, there is electromagnetic induction circuit in the inductive head 61, can produce induced-current because of the motion of response neck ring, target wheel ring 4 turns round has 6

inductance targets

42 and 6 empty targets 43 to pass through inductive head 61 at the interval in proper order, produce the induced-current of difference in height and give PLC controller with signal transmission in inductance type sensor 6, PLC controller exports the stroke number data of beam-pumping unit through computational analysis.

The device can accurately calculate the running stroke frequency of the pumping unit through the pulse number acquired by the sensor, greatly improves the accuracy of data acquisition, and has the advantages of simple structure, long service life and high metering precision.

Example two

Referring to fig. 1, the same as the first embodiment, except that a dust cover 53 is further provided on the fixing bracket 5, the dust cover 53 covers the target wheel 4 and is provided with a sensing hole 52 on one side, a sensing head 61 passes through the sensing hole 52 to perform electromagnetic induction with the inductive target 42, the dust cover 53 is made of an electromagnetic shielding material, and the dust cover 53 is provided to prevent dust on site from covering the target wheel 4 and affecting the accuracy of the electromagnetic induction, and to prevent external electromagnetic signals from interfering with internal electromagnetic induction.

The bottom end of the fixed support 5 is provided with a fixed bolt 51, and the fixed support 5 is fixedly connected with the reduction gearbox shell 3 in a detachable mode through the fixed bolt 51.

EXAMPLE III

Referring to fig. 1, basically the same as the second embodiment, except that, as a preferred scheme, a laser emitter and a photosensitive receiver are further disposed on the inductive head 61, the outer end of the inductive target 42 is coated with a reflective material, the outer end of the empty target 43 is coated with a light-absorbing material, the laser emitter emits laser light and is reflected by the reflective material to enter the photosensitive receiver, so as to generate corresponding electric signals, when the target wheel ring 4 continues to rotate, the empty target 43 passes through the front of the induction head 61, the laser is absorbed and cannot be reflected to enter the photosensitive receiver, so as to generate corresponding electric signals, the empty target 43 and the inductive target 42 alternately pass through the front of the induction head 61, the induction head 61 generates alternate electric signals and sends the electric signals to the PLC, the mode can continue to work when electromagnetic induction is out of order as a standby induction mode, the service life is prolonged, and the accuracy and precision can be ensured by mutual verification of the two schemes.

The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.

Claims

1. A stroke frequency measuring device of an oil pumping unit comprises a target wheel ring, a fixed support and an inductive sensor, and is characterized in that the target wheel ring is connected with a rotating shaft of a reduction gearbox, the upper part of the target wheel ring is provided with empty targets and inductive targets which are arranged at intervals, the inductive targets protrude outwards and are internally provided with inductive coils, the empty targets recess inwards and are not internally provided with inductive coils, the fixed support is of a Z-shaped structure and is fixed on a shell of the reduction gearbox beside the rotating shaft of the reduction gearbox, the inductive sensor is fixed on the fixed support, the upper part of the inductive sensor is provided with an inductive head, an inductive circuit is arranged in the inductive head, the inductive head and the inductive targets are arranged in parallel and level and point to the target wheel ring, the inductive sensor is electrically connected with an external PLC (programmable logic controller), when the rotating shaft of the reduction gearbox rotates, the inductive targets and the empty targets alternately pass through the inductive head and generate uneven induced current in the inductive head, and the electric signal in the induction head is transmitted to the PLC through the inductive sensor.

2. The stroke frequency measuring device of the oil pumping unit according to claim 1, wherein: the fixed support is further provided with a dust cover, the dust cover is sleeved outside the target wheel ring, a hollowed-out induction hole is formed in one side of the dust cover, and the induction head penetrates through the induction hole to perform electromagnetic induction with the inductive target.

3. The stroke frequency measuring device of the oil pumping unit according to claim 2, wherein: the bottom of the fixed support is provided with a fixed bolt, and the fixed support is fixedly connected with the shell of the reduction gearbox through the fixed bolt.

4. The stroke frequency measuring device of the oil pumping unit according to claim 3, wherein: the lower part of the target wheel ring is provided with a tubular fixing pipe, and the target wheel ring is detachably connected with the rotating shaft of the reduction gearbox through the fixing pipe.

5. The stroke frequency measuring device of the oil pumping unit according to claim 4, wherein: the induction head is further provided with a laser emitter and a photosensitive receiver, the outer end of the inductance target is coated with a reflective material, and the outer end of the empty target is coated with a light absorption material.

6. The stroke frequency measuring device of the oil pumping unit according to claim 5, wherein: the dust cover is made of a shading electromagnetic shielding material.