CN113790696B - Pumping unit monitoring equipment and pumping unit system - Google Patents
Pumping unit monitoring equipment and pumping unit system Download PDFInfo
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- CN113790696B CN113790696B CN202010457032.XA CN202010457032A CN113790696B CN 113790696 B CN113790696 B CN 113790696B CN 202010457032 A CN202010457032 A CN 202010457032A CN 113790696 B CN113790696 B CN 113790696B
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- 238000005086 pumping Methods 0.000 title claims abstract description 106
- 238000012544 monitoring process Methods 0.000 title claims description 14
- 238000012806 monitoring device Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The disclosure relates to a pumping unit monitoring device and a pumping unit system, and belongs to the technical field of oil extraction. The pumping unit comprises a connecting rod, a crank pin, a crank and a lock nut, wherein the crank is provided with a crank through hole, the crank pin penetrates through the crank through hole, two ends of the crank pin extend out of two opposite sides of the crank respectively, a first end of the crank pin is connected with the connecting rod, and a second end of the crank pin is fixedly provided with the lock nut. The monitoring device of the pumping unit comprises: the angle sensor is used for measuring the angle value between the lock nut and the crank pin, and the control device is used for controlling the working state of the pumping unit according to the angle value, and the angle sensor is in wireless connection with the control device. The first component of the angle sensor is arranged on the side wall of the crank pin through the mounting seat, and the second component of the angle sensor is positioned on the end face of the lock nut; the mount pad includes collar and positioning mechanism, and the outer lane of collar is provided with the slip track that extends along the circumference of collar.
Description
Technical Field
The disclosure relates to the technical field of oil extraction, in particular to an oil pumping unit monitoring device and an oil pumping unit system.
Background
The pumping unit is a machine equipment for exploiting petroleum and comprises a pumping rod, a horsehead, a walking beam, a connecting rod, a crank, a speed reducer and a motor which are connected in sequence. The mechanical energy provided by the motor is transmitted to the crank through the speed reducer, so that the crank rotates, the crank drives the walking beam to swing through the connecting rod, the horsehead reciprocates up and down along with the walking beam, and meanwhile, the sucker rod is driven to reciprocate up and down, so that oil is pumped out of the shaft.
The crank is connected with the connecting rod through a rod-shaped crank pin, one end of the crank pin penetrates through the crank to be connected with the connecting rod, and a lock nut is fixed at the other end of the crank pin to prevent the crank pin from falling off from the crank.
With the long-term operation of the pumping unit, the locking nut can loosen, and a crank pin can be separated from a crank to drop, so that the production of an oil field is stopped or other safety accidents are caused.
At present, the phenomenon of locking nut loosening is found mainly by the inspection of workers, but the phenomenon of locking nut loosening is not easy to find, and the workers cannot guarantee to find and process in the first time.
Disclosure of Invention
The embodiment of the disclosure provides a monitoring device of an oil pumping unit and an oil pumping unit system, which can discover the loosening phenomenon of a locking nut in time and avoid causing safety accidents. The technical scheme is as follows:
in one aspect, the present disclosure provides a pumping unit monitoring device and pumping unit system, applied to a pumping unit, the pumping unit includes a connecting rod, a rod-shaped crank pin, a crank and a lock nut, the crank has a crank through hole penetrating opposite sides of the crank, the crank pin penetrates through the crank through hole, a first end and a second end of the crank pin respectively extend out from opposite sides of the crank, the first end of the crank pin is connected with the connecting rod, the second end of the crank pin is fixed with the lock nut, and the first end and the second end are opposite ends of the crank pin; the monitoring device of the pumping unit comprises:
the angle sensor is used for measuring the angle value between the lock nut and the crank pin, and the control device is used for controlling the working state of the pumping unit according to the angle value; the angle sensor is in wireless connection with the control device;
the angle sensor comprises a first component and a second component, wherein the first component is installed on the side wall of the crank pin through a mounting seat, the second component is positioned on the end face of the lock nut, the first component is one of a magnetic field emitter and a magnetic field receiver, and the second component is the other of the magnetic field emitter and the magnetic field receiver;
the mounting seat comprises a mounting ring sleeved on the crank pin and a positioning mechanism positioned on the mounting ring, a sliding track extending along the circumferential direction of the mounting ring is arranged on the outer ring of the mounting ring, the first component is slidably arranged on the sliding track, and the positioning mechanism is used for limiting the first component to move when the first component is opposite to the second component.
In one implementation of the disclosed embodiment, the crank pin is provided with a circle of annular groove corresponding to the mounting ring, and the mounting ring is fixed in the annular groove;
the sliding track is an inverted-convex track, and the first component is provided with a concave connecting part matched with the inverted-convex track.
In one implementation manner of the embodiment of the disclosure, the outer side wall of the mounting ring is provided with a plurality of through holes which are arranged at intervals along the circumferential direction of the mounting ring, and the outer side wall of the first component is provided with a screw rod which passes through the through holes and is connected with a nut.
In one implementation of the embodiments of the disclosure, the pumping unit monitoring device further includes a wireless node, and the wireless node is electrically connected with the angle sensor;
the control device includes: the wireless gateway is in wireless connection with the wireless node, and the wireless gateway is electrically connected with the control cabinet;
the wireless gateway is configured to calculate an angle value between the crank pin and the lock nut according to an electric signal of the angle sensor, and control the pumping unit to stop through the control cabinet when the angle value exceeds a threshold value.
In an implementation manner of the embodiment of the disclosure, the monitoring device of the pumping unit further includes a control center device, and the wireless gateway is wirelessly connected with the control center device;
the wireless gateway is configured to send an early warning signal to the control center device when the angle value exceeds a threshold value.
In one implementation of the embodiment of the disclosure, the control center device is configured to acquire a shutdown signal input by a user and send the shutdown signal to the wireless gateway;
the wireless gateway is further configured to control the pumping unit to stop through the control cabinet when the stop signal is received.
In one implementation manner of the embodiment of the disclosure, the wireless gateway is further configured to control the pumping unit to stop through the control cabinet when the early warning signal sent by the wireless gateway exceeds a preset duration and the angle value still exceeds a threshold value.
In one implementation manner of the embodiment of the disclosure, the crank pin is in a shape of a circular table, and the crank through hole is a through hole in a shape of a circular table;
the diameter of the first end of the crank pin is larger than that of the second end of the crank pin, and the diameter of the crank through hole gradually increases from the lock nut to the connecting rod.
In one implementation of the disclosed embodiments, the lock nut has at least two protrusions, the protrusions are connected with an outer ring of the lock nut, and the at least two protrusions are symmetrically arranged.
In another aspect, the present disclosure provides a pumping unit system comprising the pumping unit monitoring device of any one of the above and a pumping unit electrically connected to the control cabinet.
The technical scheme provided by the embodiment of the disclosure has the beneficial effects that:
in the pumping unit, the crank is connected with the connecting rod through a crank pin, the first end of the crank pin is connected with the connecting rod, and the second end of the crank pin is fixed with a lock nut to avoid the falling of the crank pin from the crank. The angle sensor measures the angle value between the lock nut and the crank pin through the first component and the second component, and transmits the measured angle value data to the control cabinet, and the control cabinet judges whether the lock nut is loosened according to the angle value data. When the locking nut is loosened, the control cabinet can control the pumping unit to stop working, so that the pumping unit is prevented from being failed or other safety accidents are prevented from being caused. And meanwhile, the mounting seat and the positioning mechanism are arranged on the crank pin, so that the first component is convenient to mount, the position of the first component is adjusted through the sliding track, the positioning mechanism limits the movement of the first component, and the alignment of the first component and the second component in the initial state is ensured, so that the measurement accuracy is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a pumping unit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a monitoring device for an oil pumping unit according to an embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view of a mount provided by an embodiment of the present disclosure;
FIG. 4 is a block diagram of a pumping unit monitoring apparatus provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of the operation of an angle sensor provided by an embodiment of the present disclosure;
fig. 6 is a top view of a cage nut provided by an embodiment of the present disclosure.
Detailed Description
For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an oil pumping unit according to an embodiment of the present disclosure. Referring to fig. 1, the pumping unit includes a pumping rod 1, a horsehead 2, a walking beam 3, a support frame 4, a counterweight 5, a speed reducer 6, a motor 7, a support table 8 connecting rod 10, a lock nut 40 and a crank 30. The motor 7 and the support frame 4 are both positioned on the support table 8, the support frame 4 is of a triangular structure, the middle part of the walking beam 3 is hinged with the top end of the support frame 4, one end of the walking beam 3 is connected with the connecting rod 10, the connecting rod 10 is connected with the crank 30 through the locking nut 40, the counterweight 5 is positioned on the crank 30, the crank 30 is connected with the speed reducer 6, and the speed reducer 6 is connected with the motor 7. One end of the walking beam 3 is connected with the horsehead 2, the horsehead 2 is connected with the sucker rod 1, and the sucker rod 1 is connected with an underground oil pump.
The supporting table 8 is used for installing the motor 7 and the supporting frame 4, and ensures the stability of the motor 7 and the supporting frame 4. The support frame 4 is used for installing the walking beam 3, and the middle part and the support frame 4 of walking beam 3 are connected and make walking beam 3 can rotate, and walking beam 3 is used for installing horsehead 2. The counterweight 5 is located on the crank 30, making the crank 30 easier to oscillate. The speed reducer 6 can reduce the rotational speed of the output of the motor 7, and also can make the torque of the mechanical energy output by the motor 7 larger, so that the crank 30 swings.
In the embodiment of the disclosure, when the pumping unit works, the motor 7 converts electric energy into mechanical energy and transmits the mechanical energy to the speed reducer 6, the speed reducer 6 transmits the mechanical energy to the crank 30, the crank 30 rotates, the crank 30 drives the walking beam 3 to swing around the supporting frame 4 through the connecting rod 10, the horsehead 2 reciprocates up and down along with the walking beam 3, and drives the pumping rod 1 to reciprocate up and down, and the pumping rod 1 provides kinetic energy for a downhole oil pump in the up and down reciprocation process to pump oil in the well.
When the lock nut 40 is loosened, the lock nut 40 may fall off from the crank pin 20, thereby causing the crank pin 20 to fall off from the crank 30, so that the crank 30 cannot be connected with the connecting rod 10, and thus the kinetic energy cannot be provided for the oil pump, the oil pump cannot work, and even other safety accidents can be caused.
Fig. 2 is a schematic structural diagram of a monitoring device for an oil pumping unit according to an embodiment of the present disclosure. Referring to fig. 2, the pumping unit monitoring apparatus is applied to a pumping unit including a connecting rod 10, a rod-shaped crank pin 20, a crank 30, a lock nut 40, and an angle sensor 50 for measuring an angle value between the lock nut 40 and the crank pin 20.
The crank 30 has a crank through hole 301 penetrating opposite sides of the crank 30, the crank pin 20 penetrates the crank through hole 301, and a first end and a second end of the crank pin 20 protrude from opposite sides of the crank 30, respectively, the first end of the crank pin 20 is connected with the connecting rod 10, and a lock nut 40 is fixed to the second end of the crank pin 20, which are opposite ends of the crank pin 20. The angle sensor 50 includes a first part 501 and a second part 502. The first part 501 is mounted on the side wall of the crank pin 20 by means of a mounting seat (not shown in fig. 2), the second part 502 is located on the end face of the lock nut 40, the first part 501 is one of a magnetic field transmitter and a magnetic field receiver, and the second part 502 is the other of the magnetic field transmitter and the magnetic field receiver.
Fig. 3 is a schematic cross-sectional view of a mount provided by an embodiment of the present disclosure. Referring to fig. 3, the mount 90 includes a mounting ring 901 fitted over the crank pin, an outer ring of the mounting ring 901 being provided with a slide rail 902 extending in a circumferential direction of the mounting ring 901, and a positioning mechanism on the mounting ring 901 for restricting movement of the first member 501 when the first member 501 is opposed to the second member 502, the first member 501 being slidably disposed on the slide rail 902.
Fig. 4 is a block diagram of a monitoring device for a pumping unit according to an embodiment of the present disclosure. Referring to fig. 4, the oil machine monitoring apparatus further includes a control device 60 for controlling an operation state of the oil pumping unit according to the angle value. The angle sensor 50 is connected to the control device 60 wirelessly.
In this implementation, in the pumping unit, the crank 30 is connected to the connecting rod 10 through the crank pin 20, the first end of the crank pin 20 is connected to the connecting rod 10, and the second end of the crank pin 20 is fixed with the lock nut 40, so as to prevent the crank pin 20 from falling off from the crank 30. The angle sensor 50 measures an angle value between the lock nut 40 and the crank pin 20 through the first and second parts 501 and 502, and transmits data of the measured angle value to the control device 60, and the control device 60 judges whether the lock nut 40 is loosened according to the data of the angle value. When the lock nut 40 is loosened, the control device 60 can control the pumping unit to stop working, so as to avoid causing the pumping unit to malfunction or other safety accidents. Meanwhile, the mounting seat 90 and the positioning mechanism are arranged on the crank pin 20, the first part 501 is convenient to mount, the position of the first part 501 is adjusted through the sliding track, the positioning mechanism limits the movement of the first part 501, the alignment of the first part 501 and the second part 502 in an initial state is ensured, and the measurement accuracy is ensured.
In the disclosed embodiment, providing a sliding track 902 on the crank pin 20 facilitates adjusting the position of the first member 501 to align the first member 501 with the second member 502 as the lock nut 40 will rotate.
In the embodiment of the present disclosure, the first component 501 transmits a magnetic field signal to the second component 502, the second component 502 outputs a corresponding electrical signal according to the magnitude and direction of the received magnetic field signal, and transmits the electrical signal to the control device 60, and the control device 60 determines the position of the first component 501 according to the electrical signal, and determines the rotation angle of the lock nut 40 according to the position of the first component 501. The control device 60 determines whether the lock nut 40 is loosened according to the rotation angle of the lock nut 40.
As shown in fig. 2, the first part 501 is located on the crank pin 20 and the second part 502 is located on the lock nut 40. Of course, the first part 501 may be provided on the lock nut 40 and the second part 502 may be provided on the crank pin 20.
Fig. 5 is a schematic diagram illustrating the operation of an angle sensor according to an embodiment of the present disclosure. Referring to fig. 5, a first component 501 is located on the crank pin 20 and a second component 502 is located on the lock nut 40. When the lock nut 40 rotates, the second member 502 is rotated, i.e. the angle by which the second member 502 rotates relative to the first member 501 is the angle by which the lock nut 40 rotates relative to the crank pin 20.
In practice, the lock nut 40 rotates about the crank pin 20, assuming that the lock nut 40 is loosened when the lock nut 40 rotates in the direction a in fig. 5.
In the initial state, the connection line of the first component 501 and the second component 502 passes through the center O of the lock nut 40 and the crank pin 20, and it is assumed that the first component 501 is located at the point a and the second component 502 is located at the point B, where the distance between the first component 501 and the second component 502 is closest, and the magnetic field signal received by the second component 502 is strongest.
When the lock nut 40 rotates along the direction a, it is assumed that the distance between the first component 501 and the second component 502 increases when the second component 502 rotates from the point B to the point B1, the magnetic field signal received by the second component 502 decreases, the direction of the magnetic field signal also changes, the magnitude and direction of the changed magnetic field signal are transmitted to the control device 60 by the second component 502 in the form of an electrical signal, and the control device 60 determines the position of the second component 502 according to the electrical signal, so as to obtain the length of AB 1. Since the lock nut 40 is rotated about the crank pin 20, the distance OB1 of the second member 502 from the center O is constant and known, the position a of the first member 501 is unchanged, and OA is also constant and known. In the triangle AOB1, three sides are known, so that the shape of the triangle AOB1 is fixed, and the size of the +.aob1 can be obtained, where the +.aob1 is the rotation angle of the lock nut 40, and the control device 60 determines whether the lock nut 40 is loose according to the rotation angle of the lock nut 40.
In the embodiment of the present disclosure, since the lock nut 40 and the connecting rod 10 are respectively connected to both ends of the crank pin 20, if the lock nut 40 rotates in the direction opposite to the direction a during operation, i.e., the lock nut 40 moves toward the crank 30, at this time, the connecting rod 10 will be blocked on the crank 30, thereby preventing the lock nut 40 from being fastened more. In actual operation, the lock nut 40 will only rotate in the direction a, i.e. there is no more tightening of the lock nut 40 during rotation.
In the embodiment of the present disclosure, the angle sensor 50 may continuously monitor the rotation angle between the lock nut 40 and the crank pin 20, so as to ensure that the loosening condition of the lock nut 40 can be found in time.
In other implementations, the angle sensor 50 may also monitor the angle of rotation between the lock nut 40 and the crank pin 20 at intervals to avoid damage to the angle sensor 50 caused by continued operation of the angle sensor 50.
For example, the angle sensor 50 may monitor the angle of rotation between the lock nut 40 and the crank pin 20 once every four hours.
Referring again to fig. 2, the crank pin 20 is in a circular truncated cone shape, the crank through hole 301 is in a circular truncated cone shape, the diameter of the first end of the crank pin 20 is larger than the diameter of the second end of the crank pin 20, and the diameter of the crank through hole 301 gradually increases from the lock nut 40 to the connecting rod 10.
In this embodiment, the crank pin 20 is formed in a truncated cone shape, and the larger diameter end is connected to the connecting rod 10, so that the crank pin 20 is prevented from coming out of the crank through hole 301.
When the crank pin 20 is mounted, the second end of the crank pin 20 is inserted into the crank through hole 301 from the larger diameter end of the crank through hole 301, and the second end of the crank pin 20 protrudes from the threaded through hole of the lock nut 40.
In the disclosed embodiment, the cone angle of the frustoconical crankpin 20 may be between 3-5 degrees. The taper angle of the crank through hole 301 may be between 3-5 degrees.
In the disclosed embodiment, the second end of the crank pin 20 extends from the threaded through hole of the lock nut 40, and the crank pin 20 can be made slightly longer to facilitate installation of the lock nut 40. While facilitating the installation of the angle sensor 50.
Referring again to fig. 2, the diameter of the crank through hole 301 is larger than the diameter of the crank pin 20. Ensuring that the crank pin 20 can move smoothly in the crank through hole 301 for easy installation.
Illustratively, the difference in diameter of the crank through hole 301 and the diameter of the crank pin 20 may range between 1 millimeter and 5 millimeters.
For example, the difference between the diameter of the crank through hole 301 and the diameter of the crank pin 20 may be 1.2 mm.
As shown in fig. 2, the pumping unit further includes a connection ring 101, a fixing rod 102, and a connection bolt 103. The fixed rod 102 is fixedly connected with the second end of the crank pin 20, the connecting ring 101 is connected with the fixed rod 102, and the connecting rod 10 is connected with the connecting ring 101 through a connecting bolt 103.
In this implementation, during the rotation of the crank 30, the crank pin 20 rotates in the crank through hole 301, thereby driving the connection ring 101, the fixing rod 102 and the connection rod 10 to rotate, so that the center line of the connection rod 10 passes through the center of the circle of the inner circle of the lock nut 40, and the connection rod 10 is convenient to connect with the crank 30.
Referring again to fig. 2, the crank pin 20 has a ring shaped recess 201 corresponding to a mounting ring 901 secured within the ring shaped recess 201. Referring again to fig. 3, the sliding rail 902 is an inverted-convex rail, and the first member 501 has a concave-shaped connecting portion that mates with the inverted-convex rail.
In this implementation, the sliding rail 902 is arranged as an inverted-convex rail, and the sliding rail 902 is connected to the first member 501 by a connection portion of the inverted-convex shape and the concave shape on the first member 501, so that the first member 501 can slide on the sliding rail 902.
Referring again to fig. 3, the outer side wall of the mounting ring 901 has a plurality of through holes 903 arranged at intervals along the circumferential direction of the mounting ring 901, and the outer side wall of the first member 501 has a screw 511 arranged thereon, and the screw 511 is connected to the nut through the through holes 903.
In this implementation, a screw 511 is disposed on an outer sidewall of the first member 501, and the first member 501 is fixed by the screw 511, the through hole 903, and the nut, preventing the first member 501 from falling off.
Referring again to fig. 4, the pumping unit monitoring apparatus further includes a wireless node 70, the wireless node 70 being electrically connected to the angle sensor 50.
The control device 60 includes: the wireless gateway 601 and the control cabinet 602, the wireless gateway 601 is connected with the wireless node 70 in a wireless way, and the wireless gateway 601 is electrically connected with the control cabinet 602. The wireless gateway 601 is configured to calculate an angle value between the crank pin 20 and the lock nut 40 from an electrical signal of the angle sensor 50, and control the pumping unit to stop through the control cabinet 602 when the angle value exceeds a threshold value.
In this implementation, the wireless node 70 is a wireless transmission device, the second component 502 converts the received data of the magnitude and direction of the magnetic field signal into an electrical signal, and transmits the electrical signal to the wireless gateway 601 through the wireless node 70, and the wireless gateway 601 calculates the position of the lock nut 40 according to the received data of the electrical signal, and finally calculates the angle value between the crank pin 20 and the lock nut 40, that is, the angle AOB1. When the angle value between the crank pin 20 and the lock nut 40 exceeds the threshold value, the wireless gateway 601 sends an electrical signal of stopping to the control cabinet 602, and the control cabinet 602 receives the stopping signal and then controls the pumping unit to stop.
Referring again to fig. 4, the pumping unit monitoring apparatus further includes a control center apparatus 80, and the wireless gateway 601 is wirelessly connected to the control center apparatus 80. The wireless gateway 601 is configured to send an early warning signal to the control center device 80 when the angle value exceeds a threshold value.
In this implementation, the wireless gateway 601 calculates an angle value between the crank pin 20 and the lock nut 40 according to the received data of the electrical signal, and when the angle value between the crank pin 20 and the lock nut 40 exceeds a threshold value, an early warning electrical signal is sent to the control center device 80, the center device 80 receives the early warning electrical signal sent by the wireless gateway 601, and sends out an early warning signal to prompt the staff that the lock nut 40 is loosened. After the worker sees the early warning signal, the lock nut 40 can be overhauled, so that the work of the pumping unit is prevented from being influenced.
In the disclosed embodiment, the center device 80 may be located in a control center of the pumping unit, so that a worker can see early warning information in time when the control center observes the pumping unit to overhaul the lock nut 40.
For example, the warning message sent by the center device 80 may be a warning sound, for example, when the lock nut 40 is loosened, the center device 80 may send out a warning sound of "beep" and also send out a warning sound of "the lock nut is loosened".
In another implementation, the pre-warning message sent by the center device 80 may be a prompt text box, for example, when the lock nut 40 is loosened, a text box of "lock nut loosened" is displayed on the screen of the control center.
In the disclosed embodiments, the threshold ranges between 40 degrees and 80 degrees.
In this implementation, the lock nut 40 is inevitably rotated during operation observation, and if the lock nut 40 is rotated, early warning information is sent out, and the early warning information is too frequent, so that the work of workers is affected. The threshold is set between 40 degrees and 100 degrees, so that frequent early warning information is avoided, and timely discovery can be ensured when the locking nut 40 is loosened.
For example, the threshold may be 60 degrees, and when the angle of rotation between the lock nut 40 and the crank pin 20 exceeds 60 degrees, the control cabinet 602 controls the center device 80 to send an early warning signal, prompting the operator that the lock nut 40 has been loosened.
In the disclosed embodiment, the control center device 80 is configured to acquire a shutdown signal input by a user and transmit the shutdown signal to the wireless gateway 601. The wireless gateway 601 is further configured to control the pumping unit to stop through the control cabinet 602 when the stop signal is received.
In this implementation, after the worker sees the early warning signal, the worker can input a stop signal to the center device 80, the center device 80 sends the stop signal to the wireless gateway 601, the wireless gateway 601 sends the stop signal to the control cabinet 602, and the control cabinet 602 controls the pumping unit to stop. The work of the pumping unit is conveniently controlled by a worker.
In the embodiment of the present disclosure, the wireless gateway 601 is further configured to control the pumping unit to stop through the control cabinet 602 when the early warning signal sent by the wireless gateway 601 exceeds a preset duration and the angle value still exceeds a threshold value.
In this implementation, when the angle between the lock nut 40 and the crank pin 20 exceeds a threshold, the central device 80 first sends an early warning signal, when the early warning signal has not been processed, and when the angle between the lock nut 40 and the crank pin 20 still exceeds the threshold, the wireless gateway 601 sends a shutdown signal to the control cabinet 602, and the control cabinet 602 controls the pumping unit to shut down, avoiding causing a pumping unit failure or causing other safety accidents.
In the embodiment of the disclosure, the range of the preset time length is between 3 minutes and 7 minutes, so that the situation that the worker fails to see the early warning prompt in time to cause the failure of the pumping unit or cause other safety accidents is avoided.
For example, the preset time period may be 5 minutes, and when the early warning signal sent by the central apparatus 80 exceeds 5 minutes, the control cabinet 602 controls the pumping unit to be turned off.
In the disclosed embodiment, the wireless gateway 601 may be a network base station that is not only capable of calculating the angle value between the crank pin 20 and the lock nut 40 based on the data of the received electrical signal, but also may provide a network for the wireless node 70, the control center device 80, and the control cabinet 602. The signal transmission among the wireless gateway 601, the wireless node 70, the control center device 80 and the control cabinet 602 is smooth, so that the problem that the lock nut 40 cannot be found loose in time due to signal transmission delay caused by poor network is avoided.
In the embodiment of the disclosure, the network provided by the network base station may be at least one of a third generation mobile communication technology (3G), a fourth generation mobile communication technology (4G), a fifth generation mobile communication technology (5G) and a sixth generation mobile communication technology (6G), so as to ensure accuracy and smoothness of wireless transmission.
Fig. 6 is a top view of a lock nut provided by an embodiment of the present disclosure, referring to fig. 6, the lock nut 40 includes at least two protrusions 401, the protrusions 401 are disposed to be connected with an outer ring of the lock nut 40, and the at least two protrusions 401 are symmetrically disposed.
In this implementation, the protrusions 401 are disposed on the lock nut 40, and the lock nut 40 can be mounted on the crank pin 20 by rotating the protrusions 401 to thereby rotate the lock nut 40 when the lock nut 40 is mounted, while holding the protrusions 401 to facilitate rotating the lock nut 40. The lock nut 40 can also be removed from the crank pin 20 by rotating the lock nut 40 by the projection 401.
As shown in fig. 6, four protrusions 401 are disposed on the lock nut 40, and when the lock nut 40 is rotated, the protrusions 401 can also rotate along with the rotation, so that different protrusions 401 can be switched to rotate the lock nut 40, which is more convenient.
The oil pumping unit monitoring system provided by the disclosure solves the problems that when patrol staff patrol and examine, naked eyes observe, a loose fault of a crank pin lock nut of an oil pumping unit cannot be found in time, and the oil pumping unit cannot arrive at the site for processing at the first time, so that equipment accidents are caused. The running condition generating data of the crank pin of the pumping unit is collected on site on the pumping unit which normally runs, and the running condition of the crank pin of the pumping unit is reflected timely. The information of the measuring sensor is transmitted to the system receiver in a wireless transmitting mode, then the information is transmitted to the computer for display and storage by the signal receiver, the network is uploaded, and the information is displayed on the control center platform, so that an operator can timely find out the loosening fault of the locking nut of the crank pin of the pumping unit of the machine, the operator can arrive at the site for processing at the first time, and if the employee can not arrive at the site for processing in time, the controller can stop the pumping unit, and equipment accidents are avoided.
The embodiment of the disclosure also provides a pumping unit system, which comprises pumping unit monitoring equipment and a pumping unit, wherein the pumping unit is electrically connected with a control cabinet.
In the pumping unit, the crank is connected with the connecting rod through a crank pin, the first end of the crank pin is connected with the connecting rod, and the second end of the crank pin is fixed with a lock nut to avoid the falling of the crank pin from the crank. The electric energy provided by the motor is transmitted to the crank through the speed reducer, so that the crank rotates, the crank drives the walking beam to swing through the connecting rod, the horsehead reciprocates up and down along with the walking beam and drives the sucker rod to reciprocate up and down, and the sucker rod pumps oil underground in the up and down reciprocation process. The angle sensor measures the angle value between the lock nut and the crank pin, and transmits the measured angle value data to the control cabinet, and the control cabinet judges whether the lock nut is loosened according to the angle value data. When the locking nut is loosened, the control cabinet can control the pumping unit to stop working, so that the pumping unit is prevented from being failed or other safety accidents.
The pumping unit system provided by the disclosure solves the problem that well stopping cannot be found and performed in time by completely relying on employee inspection. The pumping unit system realizes automatic monitoring and protection functions, and when the tightening nut loosens, the monitoring device automatically monitors and sends out a signal to stop the pumping unit, so that the pumping unit is not only dependent on personnel inspection and manual well stop.
The pumping unit system solves the problems that other faults are generated, so that workload of staff is increased, production cost is increased, and normal production of an oil well is affected.
The pumping unit system realizes automatic well stopping when the tightening nut is loosened, and the phenomenon that the tightening nut is loosened and the oil well stops production is avoided. When the nut is loosened, the alarm is given in time, and a warning is given to a worker, so that targeted measures can be taken for processing, and the oil well production is restored.
The foregoing description of the preferred embodiments of the present disclosure is provided for the purpose of illustration only, and is not intended to limit the disclosure to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and principles of the disclosure.
Claims (10)
1. The utility model provides a monitoring equipment of beam-pumping unit, is applied to beam-pumping unit, beam-pumping unit includes connecting rod (10), shaft-like crank pin (20), crank (30) and lock nut (40), crank (30) have run through crank through-hole (301) of crank (30) opposite sides, crank pin (20) pass crank through-hole (301), and the first end and the second end of crank pin (20) are stretched out respectively from the opposite sides of crank (30), the first end of crank pin (20) is connected with connecting rod (10), the second end of crank pin (20) is fixed with lock nut (40), first end and second end are the opposite ends of crank pin (20); the monitoring equipment of the pumping unit is characterized by comprising:
an angle sensor (50) for measuring an angle value between the lock nut (40) and the crank pin (20), and a control device (60) for controlling an operating state of the pumping unit according to the angle value; the angle sensor (50) is connected with the control device (60) in a wireless way;
the angle sensor (50) comprises a first component (501) and a second component (502), wherein the first component (501) is installed on the side wall of the crank pin (20) through a mounting seat (90), the second component (502) is positioned on the end face of the lock nut (40), the first component (501) is one of a magnetic field emitter and a magnetic field receiver, and the second component (502) is the other of the magnetic field emitter and the magnetic field receiver;
the mounting seat (90) comprises a mounting ring (901) sleeved on the crank pin (20) and a positioning mechanism positioned on the mounting ring (901), a sliding track (902) extending along the circumferential direction of the mounting ring (901) is arranged on the outer ring of the mounting ring (901), the first component (501) is slidably arranged on the sliding track (902), and the positioning mechanism is used for limiting the first component (501) to move when the first component (501) is opposite to the second component (502).
2. The monitoring device of a pumping unit according to claim 1, characterized in that said crank pin (20) has a ring-shaped groove corresponding to said mounting ring (901), said mounting ring (901) being fixed in said ring-shaped groove;
the sliding track (902) is an inverted-convex track, and the first component (501) is provided with a concave connecting part matched with the inverted-convex track.
3. The monitoring device for a pumping unit according to claim 2, wherein the mounting ring (901) has a plurality of through holes (903) formed in an outer sidewall thereof at intervals along a circumferential direction of the mounting ring (901), and the screw (511) is disposed on the outer sidewall of the first member (501), and the screw (511) is connected to the nut through the through holes (903).
4. A pumping unit monitoring device according to any one of claims 1 to 3, further comprising a wireless node (70), the wireless node (70) being electrically connected to the angle sensor (50);
the control device (60) includes: a wireless gateway (601) and a control cabinet (602), wherein the wireless gateway (601) is wirelessly connected with the wireless node (70), and the wireless gateway (601) is electrically connected with the control cabinet (602);
the wireless gateway (601) is configured to calculate an angle value between the crank pin (20) and the lock nut (40) according to an electric signal of the angle sensor (50), and control the pumping unit to stop through the control cabinet (602) when the angle value exceeds a threshold value.
5. The pumping unit monitoring device of claim 4, further comprising a control center device (80), the wireless gateway (601) being wirelessly connected to the control center device (80);
the wireless gateway (601) is configured to send an early warning signal to the control center device (80) when the angle value exceeds a threshold value.
6. The pumping unit monitoring device of claim 5, wherein the control center device (80) is configured to obtain a shutdown signal entered by a user and send the shutdown signal to the wireless gateway (601);
the wireless gateway (601) is further configured to control the pumping unit to stop through the control cabinet (602) when the stop signal is received.
7. The pumping unit monitoring apparatus of claim 5,
the wireless gateway (601) is further configured to control the pumping unit to stop through the control cabinet (602) when an early warning signal sent by the wireless gateway (601) exceeds a preset duration and the angle value still exceeds a threshold value.
8. A pumping unit monitoring device according to any one of claims 1 to 3, wherein the crank pin (20) is a truncated cone shaped, and the crank through hole (301) is a truncated cone shaped through hole;
the diameter of the first end of the crank pin (20) is larger than the diameter of the second end of the crank pin (20), and the diameter of the crank through hole (301) is gradually increased from the locking nut (40) to the connecting rod (10).
9. A pumping unit monitoring device according to any one of claims 1 to 3, wherein the lock nut (40) has at least two protrusions (401), the protrusions (401) being connected with the outer ring of the lock nut (40), the at least two protrusions (401) being symmetrically arranged.
10. A pumping unit system comprising a pumping unit monitoring apparatus as claimed in any one of claims 1 to 9 and a pumping unit electrically connected to the control cabinet.
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| CN202010457032.XA CN113790696B (en) | 2020-05-26 | 2020-05-26 | Pumping unit monitoring equipment and pumping unit system |
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| CN210039056U (en) * | 2019-05-27 | 2020-02-07 | 中国石油化工股份有限公司 | Crank pin assembly safety alarm device of pumping unit |
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| CN201035698Y (en) * | 2007-03-20 | 2008-03-12 | 中国石油天然气股份有限公司 | Crank pin back-off alarm device of pumping unit |
| WO2014059749A1 (en) * | 2012-10-19 | 2014-04-24 | 中国石油天然气集团公司 | Pumping unit capable of automatically adjusting balance |
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| CN113790696A (en) | 2021-12-14 |
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