CN111810125A - Beam-pumping unit belt monitoring method and device - Google Patents
Beam-pumping unit belt monitoring method and device Download PDFInfo
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- CN111810125A CN111810125A CN202010619347.XA CN202010619347A CN111810125A CN 111810125 A CN111810125 A CN 111810125A CN 202010619347 A CN202010619347 A CN 202010619347A CN 111810125 A CN111810125 A CN 111810125A
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Abstract
The invention relates to a method and a device for monitoring a belt of a beam-pumping unit, comprising the following steps: determining a pumping unit component which has a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit or the power supply frequency of the motor; acquiring the real-time revolution number of a motor rotating shaft or a motor belt pulley or the power supply frequency of a motor and the real-time motion data of pumping unit components in the same time; judging the belt motion state of the pumping unit based on the real-time revolution, the power supply frequency, the real-time motion data and a fixed proportional relation; and if the real-time proportional relation between the real-time revolution number or the power supply frequency and the real-time motion data exceeds a preset value of the fixed proportional relation, judging that the belt is abnormal and sending prompt information. The invention has the beneficial effects that: the motion condition of the belt is monitored in real time, the phenomenon that the belt slips can be found in time, and convenience is brought to motion monitoring of the belt of the oil pumping unit.
Description
Technical Field
The invention belongs to the technical field of pumping unit monitoring, and particularly relates to a method and a device for monitoring a belt of a beam pumping unit.
Background
A beam-pumping unit (commonly known as a head knocking machine) is indispensable production equipment in the petroleum production industry. The working performance of the oil pumping unit directly influences the efficiency and safety of oil production.
In the beam-pumping unit, belt pulleys are respectively installed on an output shaft of a motor and an input shaft of a speed reducer, and a V-belt is installed on the two belt pulleys. The motor transmits power to an input shaft of the speed reducer through a belt, an output shaft of the speed reducer transmits the power to the four-bar mechanism, the four-bar mechanism changes the rotary motion of the output shaft of the speed reducer into the up-and-down motion of the walking beam horse head, and the deep well pump is driven to reciprocate up and down through the suspension rope. Therefore, the belt is an important power transmission part in the beam pumping unit, and the performance of the belt directly influences the working efficiency of the pumping unit.
The working environment of the oil pumping unit is a rather harsh field environment, and the belt is a working part exposed under the environmental condition, so that abnormal abrasion caused by external factors such as wind, sand and the like is prominent in addition to normal abrasion. As a result, a so-called "slip" phenomenon occurs in which the adhesion between the motor pulley of the pumping unit and the belt is insufficient and slip occurs. Excessive slipping of the belt affects the efficiency of the transmission of the motor power on the one hand and, on the other hand, causes rapid failure due to the faster wear of the belt due to the slip between the belt and the pulley. Therefore, the tensioning work of the belt of the oil pumping unit is an essential daily work in the oil production operation. However, the pumping units are often distributed in wide open fields, and the slippage of the belt of the pumping unit can not be found timely, so that unnecessary loss is caused. Therefore, how to timely discover how to perform tensioning operation when the belt slips slightly, so as to largely avoid the loss of motor efficiency and the additional loss caused by accelerated wear and damage after the belt slips, has become a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a method and a device for monitoring a belt of a beam pumping unit, which aim to solve the problem that the belt slip in the prior art cannot be found in time, and have the characteristics of finding the belt slip in time, monitoring the running state of the belt in real time and the like.
According to the specific embodiment of the invention, the method for monitoring the belt of the beam-pumping unit comprises the following steps:
determining a pumping unit component which has a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit or the power supply frequency of the motor;
acquiring the real-time revolution number of a motor rotating shaft or a motor belt pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time;
judging the belt motion state of the pumping unit based on the real-time revolution, the power supply frequency, the real-time motion data and the fixed proportional relation;
and if the real-time revolution or the real-time proportional relation between the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relation, judging that the belt is abnormal and sending prompt information.
Further, the pumping unit component comprises: the oil pumping unit comprises a speed reducer input shaft, a speed reducer output shaft, a speed reducer belt pulley and an oil pumping unit horse head.
Further, the real-time motion data comprises: the revolution of speed reducer input shaft, the revolution of speed reducer output shaft, the revolution of speed reducer belt pulley and the motion angle of beam-pumping unit horse head.
Further, the acquiring the real-time rotation number of the motor rotating shaft or the motor pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time specifically includes:
the number of revolutions of the motor rotating shaft, the number of revolutions of the motor belt pulley, the number of revolutions of the speed reducer input shaft, the number of revolutions of the speed reducer output shaft, and the number of revolutions of the speed reducer belt pulley are respectively acquired based on a photoelectric pulse sensor.
Further, the acquiring the real-time revolution number of the motor rotating shaft or the motor pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time specifically further includes:
and acquiring the motion angle of the horse head of the oil pumping unit based on the beam swing angle sensor.
Further, the determining the belt motion state of the pumping unit based on the real-time number of revolutions, the real-time motion data, and the fixed proportional relationship specifically includes:
and judging the belt motion state of the pumping unit based on the fixed proportional relation and the real-time proportional relation of the single chip microcomputer.
Further, the determining that the belt is abnormal and sending a prompt message if the real-time revolution number or the real-time proportional relationship between the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relationship specifically includes:
if kco-kc is greater than 0, the belt tends to slide excessively and the power transmission tends to fail; wherein kco is a fixed proportional relationship and kc is a real-time proportional relationship.
Further, the determining that the belt is abnormal and sending a prompt message if the real-time ratio of the real-time revolution number or the power supply frequency to the real-time motion data exceeds a preset value of the fixed ratio further includes:
when kco-kc ═ Δ k, a trend to 0 but not 0 indicates a skin with slight slippage; wherein kco is a fixed proportional relationship and kc is a real-time proportional relationship.
Further, the determining that the belt is abnormal and sending a prompt message if the real-time ratio of the real-time revolution number or the power supply frequency to the real-time motion data exceeds a preset value of the fixed ratio further includes:
if kc is kco, it indicates that the belt is working normally.
According to the concrete implementation mode of the invention, the belt monitoring device of the beam-pumping unit comprises:
the processing module is used for determining pumping unit components which have a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit or the power supply frequency of the motor; and
the sensor module is used for acquiring the real-time revolution number of the motor rotating shaft or the motor belt pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time;
the processing module is further used for judging the belt motion state of the oil pumping unit based on the real-time revolution, the power supply frequency, the real-time motion data and the fixed proportional relation;
and if the real-time revolution or the real-time proportional relation between the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relation, judging that the belt is abnormal and sending prompt information.
The invention has the beneficial effects that: by acquiring the parts of the pumping unit which have a determined motion relation with the motor rotating shaft or the motor belt pulley of the pumping unit, because the belt is driven to rotate by the motion of the motor belt pulley, other parts of the pumping unit are driven to move correspondingly, and because the motion of the pumping unit is a repeated circulating motion, the parts which have the motion relation with the motor rotating shaft or the motor belt pulley have a fixed relation, after the motor rotating shaft or the motor belt pulley rotates for corresponding turns, the corresponding motion relations of other related parts are determined, so that the motion conditions of the belt driven by the motor can be judged by acquiring real-time motion data, carrying out proportional calculation and comparing with the preset fixed proportional relation, the motion conditions of the belt can be monitored in real time, and the phenomenon of belt slip can be found in time, the method provides convenience for monitoring the movement of the belt of the pumping unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of monitoring a belt of a beam pumping unit provided in accordance with an exemplary embodiment;
FIG. 2 is a block diagram of a beam pumping unit provided in accordance with an exemplary embodiment;
FIG. 3 is a schematic diagram of a beam pumping unit belt monitoring apparatus provided in accordance with an exemplary embodiment;
fig. 4 is a flowchart of a process for providing a belt monitoring device for a beam pumping unit according to an exemplary embodiment.
Reference numerals
1-an electric motor; 2-a belt; 3, a speed reducer; 4-a walking beam; 5-donkey head; 6-photoelectric pulse sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a method for monitoring a belt of a beam pumping unit, which specifically includes:
101. determining a pumping unit component which has a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit or the power supply frequency of the motor;
102. acquiring the real-time revolution number of a motor rotating shaft or a motor belt pulley or the power supply frequency of a motor and the real-time motion data of pumping unit components in the same time;
103. judging the belt motion state of the pumping unit based on the real-time revolution, the power supply frequency, the real-time motion data and a fixed proportional relation;
104. and if the real-time proportional relation between the real-time revolution number or the power supply frequency and the real-time motion data exceeds a preset value of the fixed proportional relation, judging that the belt is abnormal and sending prompt information.
Specifically, referring to fig. 2, a motor 1 of the conventional beam-pumping unit transmits power to an input shaft of a speed reducer 3 through a belt 2, an output shaft of the speed reducer 3 transmits the power to a four-bar linkage mechanism, the four-bar linkage mechanism changes the rotation of the output shaft of the speed reducer 3 into the up-and-down motion of a horse head 5 of a walking beam 4, and a deep-well pump is driven by a suspension rope to reciprocate up and down. The movement of each component caused by the belt 2 being driven by the motor 1 to rotate in the same time is fixed (under the condition that the belt does not slip), that is, under the normal condition (mainly, the tension degree of the belt 2 of the oil pumping unit is ideal, and the combination of the belt 2 and the belt pulley is good), a stroke frequency (one up-and-down movement of the horse head) of the oil pumping unit has a strict and unique corresponding relation with the number of revolutions rotated by the motor 1. The formula can be expressed by the following formula, wherein R is k n, and R represents the stroke frequency of the pumping unit; n, representing the revolution of the motor of the pumping unit; and k represents the mechanical transmission coefficient from the output shaft of the motor to the horse head of the pumping unit, so that the coefficient is constant when the pumping unit normally works.
The above formula is not true if a problem occurs in a certain component, particularly if the belt 2 is loosened for some reason to slip with pulleys at both ends. In particular, when the belt 2 and the pulleys at both ends completely lose adhesion and completely slip, the power of the motor 1 cannot be transmitted to the input shaft of the reducer 3 through the belt 2 at all, thereby causing a situation where the pumping unit cannot operate. The method comprises the steps of obtaining a part with a determined motion relation with a rotating shaft or a belt pulley of a motor, further determining a fixed motion relation, and calculating the real-time motion relation of the motion data obtained in real time, so that the relation with the preset fixed relation is determined, if the relation is the same, the working is normal, and if the relation is unequal, the slipping phenomenon is indicated, the slipping phenomenon is found in time, and prompt is carried out, so that the timely maintenance of the pumping unit is guaranteed.
As a possible implementation of the above embodiment, the pumping unit component related to the belt includes: the oil pumping unit comprises a speed reducer input shaft, a speed reducer output shaft, a speed reducer belt pulley and an oil pumping unit horse head.
Wherein, the real-time motion data which has a rotation proportional relation with the rotating shaft of the motor 1 or the belt pulley of the motor 1 comprises: the revolution of the input shaft of the speed reducer 3, the revolution of the output shaft of the speed reducer 3, the revolution of the belt pulley of the speed reducer 3 and the motion angle of the horse head 5 of the pumping unit. When the pumping unit works normally, the data has a fixed relation with the movement of the rotating shaft and the belt pulley of the motor 1, namely the motor 1 rotates for a certain number of turns, and the corresponding number of turns or the corresponding angle of rotation of other parts are all certain, so that the proportion relation of normal work and the proportion relation of real time can be compared to determine whether the pumping unit works normally.
Referring to fig. 3, in some embodiments of the present invention, acquiring real-time rotation numbers of the rotating shaft of the motor 1 or the pulley of the motor 1 and real-time motion data of pumping unit components in the same time specifically includes:
the number of revolutions of the motor shaft, the number of revolutions of the motor pulley, the number of revolutions of the reducer input shaft, the number of revolutions of the reducer output shaft, and the number of revolutions of the reducer pulley are acquired based on the photoelectric pulse sensor 6, respectively.
Specifically, a photoelectric pulse sensor Sm for measuring the rotation number of the motor can be arranged on a motor pulley, a speed reducer rotation number pulse sensor Sg is arranged on the side of a speed reducer pulley, light reflecting strips are respectively adhered to a belt pulley of an output shaft of the motor and a belt pulley of the speed reducer, the photoelectric pulse sensor is correspondingly fixed with the photoelectric pulse sensor, the photoelectric sensor outputs a pulse every time the motor shaft pulley and the speed reducer pulley rotate for one circle, an output signal cable of the photoelectric sensor is connected to input interfaces I1 and I2 of a single chip microcomputer, the pulse signal of the corresponding motor shaft side optical pulse sensor is pm, and the pulse signal of the speed reducer belt pulley side optical pulse sensor is pg.
When the system is powered on, the operator inputs from the HMI (human machine interface) the speed ratio between the reducer and the motor, denoted kc, and normally kc > 1. The relationship between the number of revolutions of the motor and the number of revolutions of the reducer is as follows:
and Rg & ltkc & gt n, namely, the belt pulley of the motor rotates for kc circles every time the input belt pulley of the speed reducer rotates for one circle.
Wherein Rg is the revolution of the input shaft of the speed reducer; n is the number of revolutions of the motor; kc is the reduction ratio between the reducer and the motor.
When the belt of the pumping unit is in a normal state, namely the belt is in a reasonable tensioning state, the deformation of the formula is as follows:
and kc-Rg/n-C, wherein C is a constant. When the motor rotates for one circle, the photoelectric sensor outputs one pulse, namely n-pm; similarly, each time the input belt pulley of the speed reducer rotates for one circle, the photoelectric sensor outputs only one pulse, namely Rg ═ pg. Therefore, kc is Rg/n is pg/pm is C.
Therefore, to judge whether the belt between the motor and the reducer of the pumping unit slips, it is only necessary to judge whether the ratio of the counting pulse at the reducer side to the counting pulse at the motor side is equal to the design parameter kc within the same time.
Because the mechanical structure of the pumping unit is fixed and unchangeable in the normal production process, namely the diameter of the motor belt pulley and the diameter of the speed reducer belt pulley can be regarded as absolute constants (not counting trace abrasion), the ratio kc of the pumping unit is fixed and unchangeable when the belt is completely and tightly attached to the two belt pulleys without sliding. However, as the operation time of the pumping unit is extended, kc tends to be reduced when the belt and the belt pulley are abraded due to polishing of fine sand and the like to generate sliding. In extreme conditions kc is zero (belt completely loses power transmission capability). In the combination of the motor and the speed reducer of the oil pumping unit, the motor is a prime motor, and the speed reducer is a driven motor, so that the situation that the kc is increased can not occur under any condition (the transient fracture moment of the belt occurs, except the transient transition process of the speed reducer under the action of the sucker rod and the counterweight). Therefore, the singlechip only needs to dynamically count the pulse numbers of the two pulse sensors in the same time and then compare the pulse numbers to judge whether the ratio of the pulse numbers meets the normal value of the constant kc. There are generally three situations that arise:
if kco-kc is greater than 0, the belt tends to slide excessively and the power transmission tends to fail; kco is a fixed proportional relation, and kc is a real-time proportional relation;
when kco-kc ═ Δ k, a trend to 0 but not 0 indicates a skin with slight slippage; kco is a fixed proportional relation, and kc is a real-time proportional relation;
if kc is kco, it indicates that the belt is working normally.
Referring to fig. 4, which is a flow chart of the operating state of the above-mentioned single chip microcomputer according to another specific embodiment, a timer may be set to collect and count the number of pulses of the photoelectric pulse sensor within a certain time after the start of the operation, the collection and counting are stopped after the timing is completed, a proportional relationship is calculated and compared with a preset relationship, and a maintenance person is warned by an alarm when a severe slipping phenomenon occurs, so that the slipping phenomenon is found in time, and then the tensioning operation is performed on the slipping phenomenon, thereby avoiding the loss of the motor efficiency and the additional damage caused by the accelerated wear damage after the belt slips to a greater extent.
Based on the same technical idea, the slippage of the belt can be judged based on the rotation speed relationship between the pumping unit motor and the output shaft of the pumping unit speed reducer and the rotation corresponding relationship between the pumping unit motor and the pumping unit crank detected by the photoelectric pulse sensor.
In addition, the corresponding relation of the movement between the motor of the pumping unit and the suspension point of the horsehead of the pumping unit can acquire the movement angle of the horsehead of the pumping unit through a beam swing angle sensor. Specifically, the beam swing angle sensor can be arranged at a rotating shaft of the walking beam connected with the bracket to measure the rotating angle of the oil beam, and the rotating angle is judged according to the corresponding relation of the rotating angle and the number of revolutions of the motor.
Specifically, the number of pulses output by a beam swing angle sensor on a beam of the pumping unit in unit time is in unique corresponding relation with the power supply frequency of a motor of the pumping unit. That is, the ratio of the number of output pulses of the beam swing angle sensor per unit time to the power supply frequency of the motor is constant regardless of the high or low power supply frequency of the motor. If the ratio is kco, the output pulse number of the beam swing angle sensor per unit time is pls, and the power supply frequency of the motor is Hhz, kco is pls/Hhz is C, where C is a constant.
The power supply frequency (the output frequency of a frequency converter) of the motor is 50Hz, the walking beam horse head moves up and down 2 times (2 times of stroke) per minute, the walking beam rotates by taking a supporting shaft as a center, the swing angle range is 90 degrees, the output pulse number of the walking beam swing angle sensor in the 90-degree range is 500, 2000 pulses are output by the walking beam swing angle sensor per minute, and the ratio of the pulses to the frequency is as follows: kco pls/Hhz 2000/50 40;
when the power supply frequency of the motor is reduced to 30Hz, the number of times of inner walking beam swing per minute becomes (30/50) × 2 to 1.2, and the number of output pulses of the inner walking beam swing angle sensor per minute becomes
(1.2/2) × 2000 ═ 1200; in this case, pls is 1200, kco is pls/Hhz is 1200/30 is 40;
it can be seen that the ratio of the output pulse number of the beam swing angle sensor to the power supply frequency of the motor is constant regardless of the power supply frequency of the motor of the pumping unit in a unit time (here, 1 minute).
The output frequency (input frequency of the motor) Hhz of the variable frequency governor is firstly read by the singlechip, and then the output pulse number pls of the walking beam swing angle sensor in unit time T begins to be recorded. Then, calculating the corresponding ratio Kco, namely: kco is pls/Hhz, the acquisition time length with the time period T as pls, kco is recorded as an original ratio constant of whether the belt of the pumping unit slides, after that, the single chip microcomputer collects the input frequency of the motor and the output pulse number of the corresponding walking beam angle sensor with the time period T as a time unit in a cycle, calculates the kc of the motor and compares the kc with kco, and alarms once the difference (set according to actual experience or design parameters) between the kc and kco is found to be beyond an allowable range.
Because the beam-pumping unit is in normal production process, its mechanical structure is fixed unchangeable, and the diameter of motor belt pulley and the diameter of speed reducer belt pulley can all be regarded as absolute constant (not counting the trace wearing and tearing) promptly, so, when closely laminating totally between belt and two belt pulleys and do not have the slip, its ratio kc is fixed unchangeable. However, as the operation time of the pumping unit is extended, kc tends to decrease when the belt and the belt pulley are abraded due to polishing of fine sand and the like to cause sliding. In extreme conditions, kc is zero (belt completely loses power transmission capability). In the combination of the motor and the reducer of the pumping unit, because the motor is a prime mover and the reducer is a driven motor, the kc is not higher than kco in any case, which is similar to the three cases based on the photoelectric pulse sensor, and the description thereof is omitted.
It is understood that other proportional relationships between the components of the beam pumping unit and the motor shaft or the motor pulley can be determined by those skilled in the art with the same technical ideas as those of the above-described embodiments of the present invention to determine the belt slip, and the present invention is not limited thereto.
Based on the same technical idea, the embodiment of the invention also provides a beam-pumping unit belt monitoring device, which comprises:
the processing module is used for determining the pumping unit component which has a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit; and
the sensor module is used for acquiring the real-time revolution number of a motor rotating shaft or a motor belt pulley and the real-time motion data of the pumping unit component in the same time;
the processing module is also used for judging the belt motion state of the oil pumping unit based on the real-time revolution, the real-time motion data and the fixed proportional relation;
and if the real-time proportional relation between the real-time revolution number and the real-time motion data exceeds a preset value of a fixed proportional relation, judging that the belt is abnormal and sending prompt information.
For a specific implementation manner of the belt monitoring device of the beam-pumping unit, reference may be made to the specific implementation manner of the belt monitoring method of the beam-pumping unit in the above embodiments, and details of the present invention are not repeated herein.
According to the method and the device for monitoring the belt of the beam-pumping unit, which are provided by the embodiment of the invention, the belt transmission device of the beam-pumping unit is monitored in real time, problems are found in time and early warning is given out, so that the efficiency loss and corresponding unexpected faults caused by poor working performance of the belt transmission part are avoided.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method for monitoring a belt of a beam-pumping unit is characterized by comprising the following steps:
determining a pumping unit component which has a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit or the power supply frequency of the motor;
acquiring the real-time revolution number of a motor rotating shaft or a motor belt pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time;
judging the belt motion state of the pumping unit based on the real-time revolution, the power supply frequency, the real-time motion data and the fixed proportional relation;
and if the real-time revolution or the real-time proportional relation between the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relation, judging that the belt is abnormal and sending prompt information.
2. The beam pumping unit belt monitoring method of claim 1, wherein the pumping unit components comprise: the oil pumping unit comprises a speed reducer input shaft, a speed reducer output shaft, a speed reducer belt pulley and an oil pumping unit horse head.
3. The beam-pumping unit belt monitoring method of claim 2, wherein the real-time motion data comprises: the revolution of speed reducer input shaft, the revolution of speed reducer output shaft, the revolution of speed reducer belt pulley and the motion angle of beam-pumping unit horse head.
4. The method for monitoring the belt of the beam-pumping unit according to claim 3, wherein the step of obtaining the real-time revolution number of the motor shaft or the motor pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time specifically comprises the steps of:
the number of revolutions of the motor rotating shaft, the number of revolutions of the motor belt pulley, the number of revolutions of the speed reducer input shaft, the number of revolutions of the speed reducer output shaft, and the number of revolutions of the speed reducer belt pulley are respectively acquired based on a photoelectric pulse sensor.
5. The method for monitoring the belt of the beam-pumping unit according to claim 4, wherein the step of obtaining the real-time revolution number of the motor shaft or the motor pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time further comprises the following specific steps:
and acquiring the motion angle of the horse head of the oil pumping unit based on the beam swing angle sensor.
6. The method for monitoring the belt of the beam pumping unit according to claim 5, wherein the determining the belt motion state of the pumping unit based on the real-time number of revolutions, the real-time motion data and the fixed proportional relationship specifically comprises:
and judging the belt motion state of the pumping unit based on the fixed proportional relation and the real-time proportional relation of the single chip microcomputer.
7. The method for monitoring the belt of the beam-pumping unit according to claim 1, wherein the step of determining that the belt is abnormal and sending a prompt message if the real-time proportional relationship between the real-time revolution number or the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relationship specifically comprises the steps of:
if kco-kc is greater than 0, the belt tends to slide excessively and the power transmission tends to fail; wherein kco is a fixed proportional relationship and kc is a real-time proportional relationship.
8. The method for monitoring the belt of the beam-pumping unit according to claim 7, wherein the step of determining that the belt is abnormal and sending a prompt message if the real-time proportional relationship between the real-time revolution number or the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relationship further comprises the steps of:
when kco-kc ═ Δ k, a trend to 0 but not 0 indicates a skin with slight slippage; wherein kco is a fixed proportional relationship and kc is a real-time proportional relationship.
9. The method for monitoring the belt of the beam-pumping unit according to claim 7, wherein the step of determining that the belt is abnormal and sending a prompt message if the real-time proportional relationship between the real-time revolution number or the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relationship further comprises the steps of:
if kc is kco, it indicates that the belt is working normally.
10. The utility model provides a beam-pumping unit belt monitoring devices which characterized in that includes:
the processing module is used for determining pumping unit components which have a fixed proportional relation with the movement of a motor rotating shaft or a motor belt pulley of the pumping unit or the power supply frequency of the motor; and
the sensor module is used for acquiring the real-time revolution number of the motor rotating shaft or the motor belt pulley or the power supply frequency of the motor and the real-time motion data of the pumping unit component in the same time;
the processing module is further used for judging the belt motion state of the oil pumping unit based on the real-time revolution, the power supply frequency, the real-time motion data and the fixed proportional relation;
and if the real-time revolution or the real-time proportional relation between the power supply frequency and the real-time motion data exceeds the preset value of the fixed proportional relation, judging that the belt is abnormal and sending prompt information.
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| CN202010619347.XA CN111810125B (en) | 2020-07-01 | 2020-07-01 | Belt monitoring method and device for beam pumping unit |
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| CN202010619347.XA CN111810125B (en) | 2020-07-01 | 2020-07-01 | Belt monitoring method and device for beam pumping unit |
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| CN111810125B (en) | 2023-05-16 |
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